/* roulang page: index */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            letter-spacing: -0.015em;
            line-height: 1.2;
            color: inherit;
        }

        h1 {
            font-size: clamp(34px, 6vw, 56px);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 700;
            margin-bottom: 18px;
        }

        h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        p,
        .paragraph {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }

        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }
        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }
        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }
        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }
        .btn:hover .arrow {
            transform: translateX(4px);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 11, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 2px solid var(--neon);
            height: 68px;
            display: flex;
            align-items: center;
            transition: height var(--transition), background var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--red), var(--charcoal));
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }

        .logo-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 15%;
            right: 15%;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transform: translateY(-50%) rotate(-25deg);
        }

        .logo-icon::before {
            content: '';
            position: absolute;
            top: 20%;
            bottom: 20%;
            left: 50%;
            width: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transform: translateX(-50%);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(245, 246, 248, 0.72);
            border-radius: 6px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            transform: translateX(-50%);
            transition: width var(--transition);
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.6);
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 70%;
        }

        .nav-cta {
            background: var(--red);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 0 20px rgba(230, 51, 41, 0.45);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 6px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            inset: 68px 0 0 0;
            background: rgba(8, 9, 11, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 40px 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 500;
            color: rgba(245, 246, 248, 0.85);
            padding: 14px 20px;
            border-radius: 8px;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu .nav-cta {
            margin-top: 20px;
            text-align: center;
            justify-content: center;
        }

        /* Hero */
        .hero {
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 120px 0 80px;
            margin-top: 68px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 11, 0.82) 0%, rgba(8, 9, 11, 0.68) 50%, rgba(11, 12, 15, 0.88) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-content {
            flex: 1 1 560px;
            max-width: 640px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(255, 59, 48, 0.12);
            border: 1px solid rgba(255, 59, 48, 0.35);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            color: #FF8A80;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero h1 {
            color: #FFFFFF;
            margin-bottom: 18px;
            font-size: clamp(36px, 5.5vw, 58px);
            line-height: 1.12;
            letter-spacing: -0.02em;
        }
        .hero h1 .accent {
            color: var(--neon);
            text-shadow: 0 0 24px rgba(255, 59, 48, 0.4);
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(245, 246, 248, 0.82);
            margin-bottom: 30px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat .num {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.01em;
        }
        .hero-stat .label {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            letter-spacing: 0.02em;
        }
        .hero-panel {
            flex: 0 0 360px;
            background: rgba(13, 14, 16, 0.88);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-dark);
            backdrop-filter: blur(12px);
        }
        .hero-panel h3 {
            font-size: 18px;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .hero-panel-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-panel-item:last-child {
            border-bottom: none;
        }
        .hero-panel-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(200, 16, 46, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon);
            font-size: 16px;
            flex-shrink: 0;
        }
        .hero-panel-text {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.75);
            line-height: 1.5;
        }
        .hero-panel-text strong {
            color: #FFFFFF;
            font-weight: 600;
        }

        /* Selling points - asymmetric 3 */
        .selling-points {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
            margin-top: 0;
        }
        .sp-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            position: relative;
        }
        .sp-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15);
        }

        .sp-card-1 {
            grid-column: span 7;
            grid-row: span 1;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-light);
            display: flex;
            flex-direction: column;
        }
        .sp-card-1 .sp-img {
            width: 100%;
            height: 230px;
            background-image: url('/assets/images/coverpic/cover-1.webp');
            background-size: cover;
            background-position: center;
        }
        .sp-card-1 .sp-body {
            padding: 24px 26px;
            flex: 1;
        }
        .sp-card-1 .sp-body h3 {
            font-size: 21px;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .sp-card-1 .sp-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        .sp-card-2 {
            grid-column: span 5;
            grid-row: span 1;
            background: var(--charcoal);
            border: 1px solid var(--border-dark);
            box-shadow: var(--shadow-dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 28px 26px;
        }
        .sp-card-2 .sp-number {
            font-family: var(--font-num);
            font-size: 56px;
            font-weight: 700;
            color: var(--neon);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 12px;
            text-shadow: 0 0 30px rgba(255, 59, 48, 0.3);
        }
        .sp-card-2 h3 {
            color: #FFFFFF;
            font-size: 20px;
            margin-bottom: 8px;
        }
        .sp-card-2 p {
            color: rgba(245, 246, 248, 0.7);
            font-size: 14px;
        }

        .sp-card-3 {
            grid-column: span 12;
            grid-row: span 1;
            background: var(--light-bg);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: stretch;
            gap: 0;
            overflow: hidden;
        }
        .sp-card-3 .sp-content {
            flex: 1;
            padding: 30px 32px;
        }
        .sp-card-3 h3 {
            font-size: 20px;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .sp-card-3 .sp-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sp-card-3 .sp-list-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .sp-card-3 .sp-list-item::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--red);
            flex-shrink: 0;
        }
        .sp-card-3 .sp-img-side {
            flex: 0 0 300px;
            background-image: url('/assets/images/coverpic/cover-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 160px;
        }

        /* Scene demo */
        .scene-demo {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .scene-visual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            position: relative;
        }
        .scene-visual-item {
            border-radius: var(--radius-img);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
        }
        .scene-visual-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .scene-visual-item:hover img {
            transform: scale(1.05);
        }
        .scene-visual-item .scene-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(200, 16, 46, 0.35) 0%, rgba(8, 9, 11, 0.75) 100%);
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }
        .scene-visual-item .scene-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: #FFFFFF;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }
        .scene-visual-item .scene-caption {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.9);
            margin-left: auto;
        }
        .scene-content h2 {
            margin-bottom: 16px;
        }
        .scene-content p {
            margin-bottom: 18px;
        }
        .scene-tabs {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .scene-tab {
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: rgba(0, 0, 0, 0.05);
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
        }
        .scene-tab.active,
        .scene-tab:hover {
            background: var(--red);
            color: #FFFFFF;
        }

        /* Deep content area */
        .deep-content {
            max-width: 860px;
            margin: 0 auto;
        }
        .deep-content h2 {
            margin-bottom: 20px;
            color: inherit;
        }
        .deep-content h3 {
            margin-top: 28px;
            margin-bottom: 12px;
            font-size: 20px;
        }
        .deep-content p {
            margin-bottom: 16px;
            font-size: 16px;
        }
        .deep-content blockquote {
            border-left: 3px solid var(--red);
            padding: 14px 20px;
            margin: 20px 0;
            background: rgba(200, 16, 46, 0.04);
            border-radius: 0 8px 8px 0;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            font-style: italic;
        }
        .deep-content .highlight {
            color: var(--red);
            font-weight: 600;
        }
        .deep-content .key-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin: 18px 0;
        }
        .deep-content .key-point {
            padding: 14px 16px;
            background: rgba(0, 0, 0, 0.04);
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .deep-content .key-point::before {
            content: '◈';
            color: var(--red);
            font-size: 12px;
            margin-top: 2px;
        }

        .section-dark .deep-content blockquote {
            background: rgba(255, 255, 255, 0.04);
            border-left-color: var(--neon);
            color: rgba(245, 246, 248, 0.75);
        }
        .section-dark .deep-content .key-point {
            background: rgba(255, 255, 255, 0.04);
            color: rgba(245, 246, 248, 0.72);
        }

        /* News center */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }
        .news-featured {
            grid-column: span 7;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .news-featured:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        }
        .news-featured .news-img {
            width: 100%;
            height: 260px;
            background-image: url('/assets/images/coverpic/cover-3.webp');
            background-size: cover;
            background-position: center;
        }
        .news-featured .news-body {
            padding: 24px 26px;
        }
        .news-date {
            font-family: var(--font-num);
            font-size: 12px;
            letter-spacing: 0.06em;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .news-featured .news-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .news-featured .news-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--red);
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
        }
        .read-more .arrow {
            transition: transform var(--transition);
        }
        .read-more:hover {
            color: var(--red-bright);
        }
        .read-more:hover .arrow {
            transform: translateX(4px);
        }

        .news-list {
            grid-column: span 5;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-list-item {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .news-list-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-light);
        }
        .news-list-item .news-date {
            margin-bottom: 4px;
        }
        .news-list-item .news-title-sm {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-list-item .news-excerpt-sm {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Brand intro */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
        }
        .brand-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            background-image: url('/assets/images/coverpic/cover-4.webp');
            background-size: cover;
            background-position: center;
        }
        .brand-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(200, 16, 46, 0.4) 0%, rgba(8, 9, 11, 0.7) 100%);
        }
        .brand-visual .brand-tag {
            position: absolute;
            bottom: 20px;
            left: 20px;
            z-index: 2;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 18px;
            letter-spacing: 0.02em;
        }
        .brand-text h2 {
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .brand-text p {
            margin-bottom: 14px;
            font-size: 15px;
            line-height: 1.85;
        }
        .brand-metrics {
            display: flex;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .brand-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .brand-metric .metric-num {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 700;
            color: var(--red);
        }
        .brand-metric .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* Assurance bar / icon strip */
        .assurance-bar {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: space-between;
            padding: 20px 0;
        }
        .assurance-item {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            min-width: 180px;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            transition: all var(--transition);
        }
        .assurance-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .assurance-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(200, 16, 46, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon);
            flex-shrink: 0;
            font-size: 15px;
        }
        .assurance-text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(245, 246, 248, 0.85);
        }

        /* Task progress */
        .task-progress {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .progress-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .progress-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: rgba(0, 0, 0, 0.04);
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .progress-item.done {
            background: rgba(26, 122, 74, 0.1);
            color: var(--green-accent);
            font-weight: 600;
        }
        .progress-item .progress-check {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            border: 2px solid #ccc;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .progress-item.done .progress-check {
            border-color: var(--green-accent);
            background: var(--green-accent);
            color: #FFFFFF;
        }
        .progress-illustration {
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            background-image: url('/assets/images/coverpic/cover-5.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .progress-illustration::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(200, 16, 46, 0.5), transparent);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-item.active {
            border-color: var(--red);
            box-shadow: 0 4px 20px rgba(200, 16, 46, 0.15);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            color: var(--neon);
        }
        .faq-icon {
            font-size: 20px;
            color: var(--red);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--neon);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 22px;
            font-size: 14px;
            line-height: 1.75;
            color: rgba(245, 246, 248, 0.72);
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 22px 20px;
        }

        /* Form CTA */
        .cta-form-section {
            background: var(--charcoal);
            color: var(--text-on-dark);
            padding: 72px 0;
        }
        .cta-form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-form-info h2 {
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .cta-form-info p {
            color: rgba(245, 246, 248, 0.7);
            margin-bottom: 12px;
            font-size: 15px;
        }
        .cta-form-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 30px 28px;
            backdrop-filter: blur(8px);
        }
        .cta-form-card h3 {
            color: #FFFFFF;
            margin-bottom: 18px;
            font-size: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: rgba(245, 246, 248, 0.6);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 13px 16px;
            background: #14161A;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: #FFFFFF;
            font-size: 14px;
            transition: all var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--red);
            box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.2);
            outline: none;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        .form-submit {
            width: 100%;
            padding: 14px;
            background: var(--red);
            color: #FFFFFF;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
        }
        .form-submit:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 20px rgba(230, 51, 41, 0.45);
        }

        /* Fixed bottom CTA */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 998;
            background: rgba(8, 9, 11, 0.96);
            backdrop-filter: blur(16px);
            border-top: 2px solid var(--neon);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 24px;
            min-height: 58px;
            gap: 20px;
        }
        .fixed-cta-text {
            font-size: 15px;
            font-weight: 500;
            color: #FFFFFF;
            letter-spacing: 0.01em;
        }
        .fixed-cta-text span {
            color: var(--neon);
            font-weight: 700;
        }
        .fixed-cta .btn {
            flex-shrink: 0;
            padding: 10px 22px;
            font-size: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(245, 246, 248, 0.7);
            padding: 56px 0 32px;
            border-top: 2px solid rgba(255, 59, 48, 0.3);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
            font-size: 22px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(245, 246, 248, 0.5);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--neon);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: rgba(245, 246, 248, 0.4);
        }
        .footer-bottom a {
            color: rgba(245, 246, 248, 0.5);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--neon);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        /* Scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 500ms ease, transform 500ms ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 {
            transition-delay: 80ms;
        }
        .reveal-delay-2 {
            transition-delay: 160ms;
        }
        .reveal-delay-3 {
            transition-delay: 240ms;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 18px;
            }
            :root {
                --spacing-section: 68px;
            }
            .hero .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-panel {
                flex: 1 1 auto;
                width: 100%;
            }
            .sp-card-1 {
                grid-column: span 12;
            }
            .sp-card-2 {
                grid-column: span 12;
            }
            .sp-card-3 {
                flex-direction: column;
            }
            .sp-card-3 .sp-img-side {
                flex: 1 1 auto;
                min-height: 200px;
            }
            .scene-demo {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-featured {
                grid-column: span 12;
            }
            .news-list {
                grid-column: span 12;
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .task-progress {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-form-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .site-header {
                height: 60px;
            }
            .mobile-menu {
                inset-top: 60px;
            }
            .hero {
                min-height: 70vh;
                padding: 100px 0 50px;
                margin-top: 60px;
            }
            h1 {
                font-size: clamp(28px, 7vw, 40px);
            }
            h2 {
                font-size: clamp(22px, 5vw, 30px);
            }
            .hero h1 {
                font-size: clamp(30px, 7vw, 44px);
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-stat .num {
                font-size: 20px;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .selling-points {
                grid-template-columns: 1fr;
            }
            .sp-card-1,
            .sp-card-2,
            .sp-card-3 {
                grid-column: span 1;
            }
            .sp-card-3 .sp-img-side {
                min-height: 150px;
            }
            .deep-content .key-points {
                grid-template-columns: 1fr;
            }
            .assurance-bar {
                flex-direction: column;
                gap: 10px;
            }
            .fixed-cta {
                flex-direction: row;
                padding: 8px 14px;
                gap: 10px;
                min-height: 54px;
            }
            .fixed-cta-text {
                font-size: 13px;
            }
            .fixed-cta .btn {
                padding: 8px 14px;
                font-size: 12px;
                white-space: nowrap;
            }
            body {
                padding-bottom: 80px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .scene-visual {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            :root {
                --spacing-section: 48px;
            }
            .hero {
                padding: 80px 0 40px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-panel {
                padding: 20px 16px;
            }
            .sp-card-1 .sp-body,
            .sp-card-2,
            .sp-card-3 .sp-content {
                padding: 18px 16px;
            }
            .news-featured .news-img {
                height: 180px;
            }
            .news-featured .news-body {
                padding: 16px;
            }
            .news-list-item {
                padding: 14px 16px;
            }
            .cta-form-card {
                padding: 20px 16px;
            }
            .section {
                padding: var(--spacing-section) 0;
            }
            .footer-grid {
                gap: 16px;
            }
        }

/* roulang page: category3 */
:root {
  --red: #C8102E;
  --red-bright: #E63329;
  --neon: #FF3B30;
  --neon-soft: #FF4D2E;
  --charcoal: #0B0C0F;
  --dark: #0D0E10;
  --darker: #08090B;
  --silver: #A7ADB5;
  --green-accent: #1A7A4A;
  --light-bg: #F5F6F8;
  --text-primary: #17181C;
  --text-secondary: #5E636D;
  --text-on-dark: #F5F6F8;
  --border-light: rgba(0,0,0,0.06);
  --border-dark: rgba(255,255,255,0.08);
  --shadow-light: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-dark: 0 0 0 1px rgba(255,255,255,0.06), 0 12px 32px rgba(0,0,0,0.25);
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --radius-img: 10px;
  --font-sans: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-num: 'Inter','DIN','Archivo',sans-serif;
  --container: 1240px;
  --spacing-section: 96px;
  --transition: 220ms cubic-bezier(0.4,0,0.2,1);
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--light-bg);
  padding-bottom: 96px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: inherit;
}
input,
textarea,
select {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text-primary);
  border: none;
  outline: none;
  background: none;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--spacing-section) 0;
}
.section-tight {
  padding: 56px 0;
}
.section-dark {
  background: var(--dark);
  color: var(--text-on-dark);
}
.section-charcoal {
  background: var(--charcoal);
  color: var(--text-on-dark);
}
.section-light {
  background: var(--light-bg);
}
.section-white {
  background: #FFFFFF;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 14px;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--red);
  border-radius: 2px;
}
.section-label.on-dark {
  color: var(--neon);
}
.section-label.on-dark::before {
  background: var(--neon);
}
.section-dark p,
.section-charcoal p,
.section-dark .paragraph,
.section-charcoal .paragraph {
  color: rgba(245,246,248,0.78);
}
.section-dark h2,
.section-charcoal h2,
.section-dark h3,
.section-charcoal h3 {
  color: var(--text-on-dark);
}
h1,h2,h3,h4,h5,h6 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
}
h1 {
  font-size: clamp(34px,6vw,56px);
  line-height: 1.15;
}
h2 {
  font-size: clamp(26px,4vw,40px);
  line-height: 1.2;
}
h3 {
  font-size: 20px;
  line-height: 1.35;
}
h4 {
  font-size: 17px;
  line-height: 1.4;
}
p {
  line-height: 1.8;
  color: var(--text-secondary);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--red);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(200,16,46,0.35);
}
.btn-primary:hover {
  background: var(--red-bright);
  box-shadow: 0 6px 24px rgba(230,51,41,0.5);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(200,16,46,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--text-on-dark);
  border: 1.5px solid rgba(255,255,255,0.35);
  border-radius: var(--radius-btn);
}
.btn-outline:hover {
  border-color: var(--neon);
  color: var(--neon);
  box-shadow: 0 0 16px rgba(255,59,48,0.25);
}
.btn-outline-light {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(0,0,0,0.2);
  border-radius: var(--radius-btn);
}
.btn-outline-light:hover {
  border-color: var(--red);
  color: var(--red);
}
.btn-sm {
  padding: 10px 18px;
  font-size: 13px;
  border-radius: 6px;
}
.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}
.btn .arrow {
  display: inline-block;
  transition: transform var(--transition);
}
.btn:hover .arrow {
  transform: translateX(4px);
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--darker);
  border-bottom: 2px solid var(--neon);
  min-height: 68px;
  display: flex;
  align-items: center;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: nowrap;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-icon {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red) 0%, var(--darker) 70%);
  border: 2px solid var(--red-bright);
  position: relative;
  flex-shrink: 0;
}
.logo-icon::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%) rotate(-30deg);
  width: 16px;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 -5px 0 #fff, 0 5px 0 #fff;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}
.main-nav a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(245,246,248,0.68);
  border-radius: 6px;
  position: relative;
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -2px;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--neon);
  transition: width var(--transition);
  border-radius: 2px;
}
.main-nav a:hover {
  color: #fff;
}
.main-nav a:hover::after {
  width: 60%;
}
.main-nav a.active {
  color: #fff;
  background: rgba(200,16,46,0.18);
}
.main-nav a.active::after {
  width: 60%;
  box-shadow: 0 0 8px var(--neon);
}
.nav-cta {
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.2);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.category-hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  padding: 140px 0 64px;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  background-attachment: fixed;
  color: #fff;
  isolation: isolate;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,9,11,0.72) 0%, rgba(8,9,11,0.55) 50%, rgba(8,9,11,0.88) 100%);
  z-index: -1;
}
.category-hero .hero-content {
  max-width: 820px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--neon);
}
.breadcrumb .sep {
  color: rgba(255,255,255,0.35);
}
.breadcrumb .current {
  color: #fff;
  font-weight: 600;
}
.category-hero h1 {
  color: #fff;
  margin-bottom: 18px;
  font-size: clamp(32px,5.5vw,52px);
}
.category-hero .hero-lead {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255,255,255,0.78);
  max-width: 660px;
}
.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta-item .num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--neon);
  line-height: 1.1;
}
.hero-meta-item .label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}
.hscroll-section {
  padding: 72px 0 56px;
  background: var(--light-bg);
}
.hscroll-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hscroll-header .text h2 {
  margin-bottom: 8px;
}
.hscroll-header .text p {
  max-width: 560px;
}
.hscroll-controls {
  display: flex;
  gap: 10px;
}
.hscroll-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-primary);
  transition: all var(--transition);
  flex-shrink: 0;
}
.hscroll-btn:hover {
  border-color: var(--red);
  color: var(--red);
  transform: translateY(-2px);
}
.hscroll-btn:active {
  transform: translateY(0);
}
.hscroll-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--red) rgba(0,0,0,0.08);
  -webkit-overflow-scrolling: touch;
}
.hscroll-track::-webkit-scrollbar {
  height: 6px;
}
.hscroll-track::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.06);
  border-radius: 3px;
}
.hscroll-track::-webkit-scrollbar-thumb {
  background: var(--red);
  border-radius: 3px;
}
.hscroll-card {
  flex: 0 0 320px;
  scroll-snap-align: start;
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-light);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.hscroll-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(0,0,0,0.13);
}
.hscroll-card .card-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.hscroll-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}
.hscroll-card:hover .card-img-wrap img {
  transform: scale(1.05);
}
.hscroll-card .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--red);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
  z-index: 2;
}
.hscroll-card .card-body {
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.hscroll-card .card-body h3 {
  font-size: 18px;
  line-height: 1.4;
}
.hscroll-card .card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  flex: 1;
}
.hscroll-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
  transition: all var(--transition);
}
.hscroll-card .card-link .arrow {
  transition: transform var(--transition);
}
.hscroll-card .card-link:hover {
  color: var(--red-bright);
}
.hscroll-card .card-link:hover .arrow {
  transform: translateX(4px);
}
.training-detail {
  background: #fff;
  padding: 80px 0;
}
.training-detail .detail-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}
.detail-text h2 {
  margin-bottom: 20px;
}
.detail-text h3 {
  font-size: 20px;
  margin: 28px 0 12px;
  color: var(--text-primary);
}
.detail-text p {
  margin-bottom: 14px;
}
.detail-text ul {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.detail-text ul li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.detail-text ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 3px rgba(200,16,46,0.15);
}
.detail-text blockquote {
  margin: 24px 0;
  padding: 18px 24px;
  border-left: 4px solid var(--red);
  background: rgba(200,16,46,0.04);
  border-radius: 0 10px 10px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
  font-style: normal;
}
.detail-side {
  position: sticky;
  top: 96px;
}
.detail-side-card {
  background: var(--dark);
  color: var(--text-on-dark);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-dark);
}
.detail-side-card h4 {
  font-size: 18px;
  margin-bottom: 16px;
  color: #fff;
}
.detail-side-card p {
  color: rgba(245,246,248,0.72);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 16px;
}
.data-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-dark);
}
.data-row:last-child {
  border-bottom: none;
}
.data-row .label {
  font-size: 13px;
  color: rgba(245,246,248,0.55);
}
.data-row .value {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--neon);
}
.faq-section {
  background: var(--charcoal);
  color: var(--text-on-dark);
  padding: 80px 0;
}
.faq-section h2 {
  color: #fff;
  margin-bottom: 8px;
}
.faq-section .faq-intro {
  color: rgba(245,246,248,0.62);
  margin-bottom: 36px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 820px;
}
.faq-item {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open {
  border-color: rgba(255,59,48,0.5);
  background: rgba(255,255,255,0.05);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--neon);
}
.faq-question .icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: transform var(--transition);
  color: rgba(255,255,255,0.6);
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
  color: var(--neon);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition) ease, padding var(--transition) ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
}
.faq-answer p {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245,246,248,0.68);
}
.cta-section {
  background: #fff;
  padding: 80px 0;
}
.cta-box {
  background: linear-gradient(135deg, var(--dark) 0%, var(--charcoal) 55%, #1a1a1f 100%);
  border-radius: 18px;
  padding: 52px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}
.cta-box::after {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,16,46,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.cta-box .cta-text {
  flex: 1;
  min-width: 280px;
}
.cta-box .cta-text h2 {
  font-size: clamp(24px,3vw,34px);
  color: #fff;
  margin-bottom: 10px;
}
.cta-box .cta-text p {
  color: rgba(245,246,248,0.65);
  font-size: 15px;
  max-width: 520px;
}
.cta-box .cta-actions {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--darker);
  border-top: 2px solid var(--red);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
}
.bottom-bar .bar-text {
  font-size: 14px;
  color: rgba(245,246,248,0.78);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.bottom-bar .bar-text strong {
  color: var(--neon);
  font-weight: 600;
}
.bottom-bar .bar-btn {
  flex-shrink: 0;
}
.site-footer {
  background: var(--darker);
  color: var(--text-on-dark);
  padding: 60px 0 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 0.8fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo {
  margin-bottom: 14px;
}
.footer-brand p {
  color: rgba(245,246,248,0.55);
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(245,246,248,0.55);
  padding: 5px 0;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--neon);
}
.footer-col p {
  font-size: 13px;
  color: rgba(245,246,248,0.45);
  padding: 3px 0;
  line-height: 1.6;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(245,246,248,0.4);
}
.footer-beian {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.footer-bottom a {
  color: rgba(245,246,248,0.5);
  transition: color var(--transition);
}
.footer-bottom a:hover {
  color: var(--neon);
}
@media (max-width: 1024px) {
  :root {
    --spacing-section: 68px;
  }
  .main-nav {
    gap: 0;
  }
  .main-nav a {
    padding: 8px 10px;
    font-size: 13px;
  }
  .detail-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .detail-side {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 768px) {
  :root {
    --spacing-section: 48px;
  }
  .section {
    padding: 48px 0;
  }
  .container {
    padding: 0 16px;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--darker);
    flex-direction: column;
    alignalign-items: stretch;
    justify-content: flex-start;
    padding: 20px 24px 32px;
    gap: 8px;
    border-bottom: 2px solid var(--neon);
    transform: translateY(-110%);
    transition: transform var(--transition) ease;
    pointer-events: none;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
  }
  .main-nav.open {
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav a {
    padding: 14px 16px;
    font-size: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    letter-spacing: 0.02em;
  }
  .main-nav a::after {
    display: none;
  }
  .main-nav a.active {
    background: rgba(200,16,46,0.18);
  }
  .bottom-bar {
    padding: 0 16px;
  }
  .bottom-bar .bar-text {
    font-size: 12px;
  }
  .cta-box {
    padding: 36px 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .hscroll-card {
    flex: 0 0 85%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
  .footer-beian {
    justify-content: center;
  }
}
.training-detail, .faq-section, .cta-section, .hscroll-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 400ms ease, transform 400ms ease;
}
.training-detail.is-visible, .faq-section.is-visible, .cta-section.is-visible, .hscroll-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category2 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }

        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }

        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }

        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }

        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }

        .btn:hover .arrow {
            transform: translateX(4px);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        /* ============ 导航样式 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--darker);
            border-bottom: 2px solid var(--neon);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--red), var(--red-bright));
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            flex-shrink: 0;
        }

        .logo-icon::after {
            content: '';
            width: 14px;
            height: 14px;
            border: 2.5px solid #FFFFFF;
            border-radius: 50%;
            position: absolute;
            top: 5px;
            left: 6px;
        }

        .logo-icon::before {
            content: '';
            width: 8px;
            height: 10px;
            background: #FFFFFF;
            position: absolute;
            bottom: 3px;
            right: 5px;
            clip-path: polygon(0 100%, 50% 0, 100% 100%);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.72);
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
        }

        .main-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 16, 46, 0.3);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.6);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: #FFFFFF;
            background: var(--red);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            box-shadow: 0 2px 12px rgba(200, 16, 46, 0.4);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 4px 20px rgba(230, 51, 41, 0.55);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .mobile-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============ Hero/面包屑 ============ */
        .breadcrumb-section {
            padding-top: 108px;
            padding-bottom: 40px;
            background: linear-gradient(180deg, var(--charcoal) 0%, var(--dark) 100%);
            color: var(--text-on-dark);
            border-bottom: 1px solid var(--border-dark);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--neon);
        }

        .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .breadcrumb-nav .current {
            color: var(--neon);
            font-weight: 500;
        }

        .hero-title {
            font-size: clamp(34px, 6vw, 56px);
            font-weight: 700;
            line-height: 1.18;
            letter-spacing: -0.02em;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .hero-title .accent {
            color: var(--neon);
            position: relative;
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(245, 246, 248, 0.78);
            max-width: 720px;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ============ 时间线板块 ============ */
        .timeline-section {
            background: #FFFFFF;
            padding: 64px 0;
        }

        .timeline-wrapper {
            display: grid;
            grid-template-columns: 380px 1fr;
            gap: 32px;
        }

        .timeline-list {
            display: flex;
            flex-direction: column;
            gap: 6px;
            max-height: 680px;
            overflow-y: auto;
            padding-right: 4px;
            scrollbar-width: thin;
            scrollbar-color: var(--red) transparent;
        }

        .timeline-list::-webkit-scrollbar {
            width: 5px;
        }

        .timeline-list::-webkit-scrollbar-track {
            background: transparent;
        }

        .timeline-list::-webkit-scrollbar-thumb {
            background: var(--red);
            border-radius: 4px;
        }

        .timeline-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 18px;
            border-radius: 12px;
            cursor: pointer;
            transition: all var(--transition);
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            position: relative;
        }

        .timeline-item:hover {
            border-color: rgba(200, 16, 46, 0.3);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }

        .timeline-item.active {
            background: #FEF5F6;
            border-color: var(--red);
            box-shadow: 0 4px 20px rgba(200, 16, 46, 0.1);
        }

        .timeline-node {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--light-bg);
            border: 2px solid var(--silver);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all var(--transition);
            font-family: var(--font-num);
        }

        .timeline-item.active .timeline-node {
            background: var(--red);
            border-color: var(--red);
            color: #FFFFFF;
            box-shadow: 0 0 12px rgba(200, 16, 46, 0.4);
        }

        .timeline-item-content {
            flex: 1;
            min-width: 0;
        }

        .timeline-item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 4px;
            transition: color var(--transition);
        }

        .timeline-item.active .timeline-item-title {
            color: var(--red);
        }

        .timeline-item-meta {
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .timeline-item-meta .tag {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(200, 16, 46, 0.08);
            color: var(--red);
            font-size: 11px;
            font-weight: 600;
        }

        .timeline-detail {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 32px;
            min-height: 480px;
            display: flex;
            flex-direction: column;
        }

        .timeline-detail-image {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: var(--radius-img);
            margin-bottom: 20px;
        }

        .timeline-detail-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--red);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .timeline-detail-title {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .timeline-detail-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

        .timeline-detail-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            padding: 16px 20px;
            background: var(--light-bg);
            border-radius: 10px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .stat-number {
            font-size: 22px;
            font-weight: 700;
            color: var(--red);
            font-family: var(--font-num);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .timeline-detail-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .timeline-detail-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .timeline-detail-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--red);
            margin-top: 8px;
            flex-shrink: 0;
        }

        /* ============ 训练数据亮点 ============ */
        .training-highlights {
            background: var(--light-bg);
            padding: 64px 0;
        }

        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .highlight-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-light);
            transition: all var(--transition);
        }

        .highlight-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
        }

        .highlight-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--red);
            font-family: var(--font-num);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .highlight-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ============ 深度内容区 ============ */
        .deep-content {
            background: #FFFFFF;
            padding: 72px 0;
        }

        .deep-content-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .deep-content h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            margin-top: 28px;
        }

        .deep-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .deep-quote {
            padding: 20px 24px;
            border-left: 3px solid var(--red);
            background: #FEF5F6;
            border-radius: 0 10px 10px 0;
            margin: 20px 0;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-primary);
            font-style: italic;
        }

        .deep-content ul {
            padding-left: 20px;
            margin-bottom: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .deep-content ul li {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--light-bg);
            padding: 72px 0;
        }

        .faq-heading {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-heading h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .accordion-custom .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-item:focus-within {
            border-color: var(--red);
            box-shadow: 0 0 0 2px rgba(200, 16, 46, 0.15);
        }

        .accordion-custom .accordion-button {
            background: #FFFFFF;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: #FEF5F6;
            color: var(--red);
        }

        .accordion-custom .accordion-button::after {
            filter: invert(20%) sepia(60%) saturate(3000%) hue-rotate(340deg);
        }

        .accordion-custom .accordion-body {
            padding: 16px 20px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--charcoal) 0%, #1a0d10 100%);
            padding: 72px 0;
            color: var(--text-on-dark);
            border-top: 2px solid var(--red);
        }

        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            line-height: 1.2;
            margin-bottom: 10px;
        }

        .cta-text p {
            font-size: 16px;
            color: rgba(245, 246, 248, 0.75);
            margin-bottom: 0;
            max-width: 520px;
            line-height: 1.7;
        }

        /* ============ 底部固定转化条 ============ */
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: #0A0A0D;
            border-top: 2px solid var(--red);
            min-height: 60px;
            display: flex;
            align-items: center;
            padding: 8px 24px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.35);
        }

        .fixed-cta-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
            flex-wrap: wrap;
        }

        .fixed-cta-text {
            font-size: 15px;
            color: #FFFFFF;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .fixed-cta-text strong {
            color: var(--neon);
            font-weight: 700;
        }

        .fixed-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            background: var(--red);
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .fixed-cta-btn:hover {
            background: var(--red-bright);
            box-shadow: 0 0 20px rgba(230, 51, 41, 0.5);
            color: #FFFFFF;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--darker);
            color: var(--text-on-dark);
            padding: 56px 0 32px;
            border-top: 1px solid var(--border-dark);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
            font-size: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.65);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 246, 248, 0.65);
            padding: 4px 0;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--neon);
        }

        .footer-col p {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            margin-bottom: 4px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.5);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(245, 246, 248, 0.5);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .main-nav a {
                padding: 6px 10px;
                font-size: 13px;
            }

            .timeline-wrapper {
                grid-template-columns: 320px 1fr;
                gap: 20px;
            }

            .highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--darker);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                border-bottom: 2px solid var(--neon);
                gap: 4px;
                z-index: 1000;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 14px 16px;
                font-size: 17px;
                border-radius: 8px;
            }

            .main-nav a.active::after {
                left: 16px;
                right: 16px;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .breadcrumb-section {
                padding-top: 88px;
                padding-bottom: 28px;
            }

            .timeline-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .timeline-list {
                max-height: none;
                overflow-y: visible;
                flex-direction: row;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 8px;
                scrollbar-width: thin;
                scrollbar-color: var(--red) transparent;
            }

            .timeline-list::-webkit-scrollbar {
                height: 4px;
            }

            .timeline-item {
                min-width: 220px;
                flex-shrink: 0;
                padding: 12px 14px;
                gap: 10px;
            }

            .timeline-node {
                width: 26px;
                height: 26px;
                font-size: 11px;
            }

            .timeline-item-title {
                font-size: 13px;
            }

            .timeline-detail {
                padding: 20px;
                min-height: 0;
            }

            .timeline-detail-image {
                height: 180px;
            }

            .highlight-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .highlight-number {
                font-size: 28px;
            }

            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .fixed-cta-bar {
                padding: 6px 16px;
                min-height: 54px;
            }

            .fixed-cta-content {
                flex-direction: row;
                flex-wrap: nowrap;
                gap: 8px;
            }

            .fixed-cta-text {
                font-size: 13px;
                flex: 1;
                min-width: 0;
            }

            .fixed-cta-btn {
                padding: 8px 16px;
                font-size: 13px;
                flex-shrink: 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-title {
                font-size: 30px;
            }

            .hero-lead {
                font-size: 15px;
            }

            .highlight-grid {
                grid-template-columns: 1fr;
            }

            .timeline-detail-stats {
                gap: 16px;
            }

            .stat-number {
                font-size: 18px;
            }

            .fixed-cta-bar {
                padding: 4px 12px;
                min-height: 48px;
            }

            .fixed-cta-text {
                font-size: 11px;
            }

            .fixed-cta-btn {
                padding: 6px 12px;
                font-size: 12px;
                gap: 4px;
            }
        }

/* roulang page: category1 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        @media (max-width: 1024px) {
            :root {
                --spacing-section: 68px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --spacing-section: 48px;
            }
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }

        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }

        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }

        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }

        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }

        .btn:hover .arrow {
            transform: translateX(4px);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        /* 导航样式 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--darker);
            border-bottom: 2px solid var(--neon);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: var(--text-on-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--red), var(--neon-soft));
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            position: relative;
            flex-shrink: 0;
        }

        .logo-icon::after {
            content: '';
            width: 12px;
            height: 12px;
            background: #fff;
            border-radius: 2px;
            transform: rotate(45deg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: rgba(245, 246, 248, 0.65);
            padding: 8px 12px;
            border-radius: 6px;
            white-space: nowrap;
            position: relative;
            transition: color var(--transition);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .main-nav a:hover {
            color: #FFFFFF;
        }

        .main-nav a:hover::after {
            width: 70%;
        }

        .main-nav a.active {
            color: var(--neon);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 70%;
            background: var(--neon);
            box-shadow: 0 0 10px rgba(255, 59, 48, 0.6);
        }

        .header-cta {
            flex-shrink: 0;
        }

        .header-cta .btn {
            padding: 10px 20px;
            font-size: 13px;
            background: var(--red);
            color: #fff;
            border-radius: var(--radius-btn);
            box-shadow: 0 2px 10px rgba(200, 16, 46, 0.4);
            transition: all var(--transition);
        }

        .header-cta .btn:hover {
            background: var(--red-bright);
            box-shadow: 0 4px 18px rgba(230, 51, 41, 0.55);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
            cursor: pointer;
            z-index: 1001;
        }

        .hamburger span {
            width: 26px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--darker);
            z-index: 999;
            padding: 32px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            font-size: 20px;
            font-weight: 500;
            color: rgba(245, 246, 248, 0.75);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color var(--transition);
        }

        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: var(--neon);
        }

        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        @media (min-width: 1025px) {
            .mobile-drawer {
                display: none !important;
            }
        }

        /* Hero */
        .category-hero {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: flex-end;
            padding: 120px 0 64px;
            background: var(--darker);
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 11, 0.65) 0%, rgba(8, 9, 11, 0.85) 60%, var(--darker) 100%);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(245, 246, 248, 0.55);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--neon);
        }

        .breadcrumb .sep {
            color: rgba(245, 246, 248, 0.3);
        }

        .breadcrumb .current {
            color: var(--neon);
        }

        .category-hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.015em;
            color: var(--text-on-dark);
            margin-bottom: 20px;
            max-width: 760px;
        }

        .category-hero .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(245, 246, 248, 0.78);
            max-width: 620px;
            margin-bottom: 32px;
        }

        .hero-meta {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.6);
            font-family: var(--font-num);
        }

        .hero-meta-item strong {
            color: #fff;
            font-weight: 600;
        }

        /* 卡片网格 */
        .card-grid-section {
            background: var(--light-bg);
        }

        .section-header-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .section-header-row h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }

        .section-header-row p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 440px;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-auto-rows: 10px;
            gap: 20px;
        }

        .card-item {
            grid-row: span 28;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .card-item:hover {
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
            transform: translateY(-4px);
            border-color: rgba(200, 16, 46, 0.15);
        }

        .card-item.large {
            grid-row: span 40;
            grid-column: span 2;
        }

        .card-item.tall {
            grid-row: span 36;
        }

        .card-item.wide {
            grid-column: span 2;
            grid-row: span 26;
        }

        .card-item-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            flex-shrink: 0;
        }

        .card-item.large .card-item-image {
            aspect-ratio: 21 / 9;
        }

        .card-item-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s var(--transition);
        }

        .card-item:hover .card-item-image img {
            transform: scale(1.05);
        }

        .card-item-image .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--red);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            z-index: 2;
        }

        .card-item-image .card-date {
            position: absolute;
            bottom: 14px;
            right: 14px;
            background: rgba(8, 9, 11, 0.8);
            color: #fff;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            font-family: var(--font-num);
            z-index: 2;
        }

        .card-item-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-item-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .card-item.large .card-item-body h3 {
            font-size: 22px;
        }

        .card-item-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-item-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .card-item-footer .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--red);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .card-item-footer .read-more .arrow {
            transition: transform var(--transition);
        }

        .card-item-footer .read-more:hover .arrow {
            transform: translateX(4px);
        }

        .card-item-footer .stat {
            font-size: 12px;
            color: var(--text-secondary);
            font-family: var(--font-num);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-item.large,
            .card-item.wide {
                grid-column: span 2;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                grid-auto-rows: auto;
            }
            .card-item,
            .card-item.large,
            .card-item.tall,
            .card-item.wide {
                grid-column: span 1;
                grid-row: auto;
            }
            .card-item-image,
            .card-item.large .card-item-image {
                aspect-ratio: 16 / 9;
            }
        }

        /* 深度内容 */
        .deep-content {
            background: #FFFFFF;
        }

        .deep-content-inner {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 48px;
            align-items: start;
        }

        .deep-content-side {
            position: sticky;
            top: 100px;
        }

        .deep-content-side .section-label {
            margin-bottom: 12px;
        }

        .deep-content-side h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .deep-content-side p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .deep-content-side .btn {
            background: var(--red);
            color: #fff;
        }

        .deep-content-main article {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
        }

        .deep-content-main article h3 {
            font-size: 22px;
            font-weight: 600;
            margin: 36px 0 16px;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .deep-content-main article p {
            margin-bottom: 16px;
            color: #3a3d44;
        }

        .deep-content-main article blockquote {
            border-left: 3px solid var(--red);
            padding: 16px 20px;
            margin: 24px 0;
            background: #fafafa;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: var(--text-secondary);
        }

        .deep-content-main article ul {
            margin: 16px 0 20px;
            padding-left: 20px;
        }

        .deep-content-main article ul li {
            margin-bottom: 8px;
            color: #3a3d44;
        }

        .deep-content-main article ul li::marker {
            color: var(--red);
        }

        @media (max-width: 1024px) {
            .deep-content-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .deep-content-side {
                position: static;
            }
        }

        /* 数据时间线 */
        .data-timeline-section {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .data-timeline-section .section-label {
            color: var(--neon);
        }

        .data-timeline-section .section-label::before {
            background: var(--neon);
        }

        .timeline-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            margin-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .timeline-item {
            padding: 28px 28px 28px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .timeline-item .t-date {
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 600;
            color: var(--neon);
            font-family: var(--font-num);
            padding-top: 3px;
            min-width: 72px;
        }

        .timeline-item .t-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .timeline-item .t-info p {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.6);
            line-height: 1.6;
        }

        .timeline-item:nth-child(odd) {
            padding-right: 28px;
            padding-left: 0;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }

        .timeline-item:nth-child(even) {
            padding-left: 28px;
            padding-right: 0;
        }

        @media (max-width: 768px) {
            .timeline-grid {
                grid-template-columns: 1fr;
            }
            .timeline-item:nth-child(odd) {
                border-right: none;
                padding-right: 0;
                padding-left: 0;
            }
            .timeline-item:nth-child(even) {
                padding-left: 0;
                padding-right: 0;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--light-bg);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            background: #fff;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:focus-within,
        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            transition: all var(--transition);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 20px;
            color: var(--red);
            transition: transform var(--transition);
            font-family: var(--font-num);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s var(--transition);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--charcoal) 0%, #1a1c20 100%);
            color: var(--text-on-dark);
            padding: 72px 0;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }

        .cta-inner p {
            font-size: 15px;
            color: rgba(245, 246, 248, 0.65);
            max-width: 520px;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-buttons {
                width: 100%;
            }
            .cta-buttons .btn {
                flex: 1;
                text-align: center;
            }
        }

        /* 底部固定转化条 */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--darker);
            border-top: 2px solid var(--red);
            min-height: 60px;
            display: flex;
            align-items: center;
            padding: 8px 0;
        }

        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }

        .sticky-cta-text {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.75);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sticky-cta-text strong {
            color: #fff;
            font-weight: 600;
        }

        .sticky-cta .btn {
            background: var(--red);
            color: #fff;
            padding: 10px 22px;
            font-size: 13px;
            box-shadow: 0 2px 12px rgba(200, 16, 46, 0.4);
            flex-shrink: 0;
        }

        .sticky-cta .btn:hover {
            background: var(--red-bright);
        }

        @media (max-width: 640px) {
            .sticky-cta {
                min-height: 56px;
                padding: 6px 0;
            }
            .sticky-cta-text {
                font-size: 12px;
                flex: 1;
            }
            .sticky-cta .btn {
                padding: 8px 16px;
                font-size: 12px;
            }
        }

        /* 页脚 */
        .site-footer {
            background: var(--darker);
            color: rgba(245, 246, 248, 0.65);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 246, 248, 0.5);
            max-width: 260px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            padding: 5px 0;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--neon);
        }

        .footer-col p {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.45);
            padding: 3px 0;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            font-size: 12px;
            color: rgba(245, 246, 248, 0.4);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(245, 246, 248, 0.4);
        }

        .footer-bottom a {
            color: rgba(245, 246, 248, 0.45);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--neon);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }

        /* H1 辅助 */
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        @media (max-width: 640px) {
            .category-hero {
                min-height: 50vh;
                padding: 100px 0 40px;
            }
            .hero-meta {
                gap: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }

        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }

        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }

        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }

        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }

        .btn:hover .arrow {
            transform: translateX(4px);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--darker);
            border-bottom: 2px solid var(--neon);
            height: 68px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text-on-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--red);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
            flex-shrink: 0;
            box-shadow: 0 0 10px rgba(200, 16, 46, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.03em;
            color: rgba(245, 246, 248, 0.72);
            border-radius: 6px;
            position: relative;
            transition: color var(--transition), background var(--transition);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            transition: width var(--transition);
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.6);
        }

        .main-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.04);
        }

        .main-nav a:hover::after {
            width: 70%;
        }

        .main-nav a.active {
            color: #FFFFFF;
            font-weight: 600;
            background: rgba(200, 16, 46, 0.15);
        }

        .main-nav a.active::after {
            width: 70%;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--red);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 0 20px rgba(230, 51, 41, 0.45);
            color: #FFFFFF;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-on-dark);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--darker);
            z-index: 999;
            padding: 32px 24px;
            display: none;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            font-size: 20px;
            padding: 14px 0;
            color: rgba(245, 246, 248, 0.85);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color var(--transition);
        }

        .mobile-drawer a:hover {
            color: var(--neon);
        }

        /* Hero */
        .page-hero {
            position: relative;
            min-height: 65vh;
            display: flex;
            align-items: center;
            padding: 120px 0 60px;
            background: var(--dark);
            color: var(--text-on-dark);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 9, 11, 0.82);
            z-index: 1;
        }

        .page-hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.65);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(245, 246, 248, 0.65);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--neon);
        }

        .breadcrumb .sep {
            color: rgba(245, 246, 248, 0.35);
        }

        .page-hero h1 {
            font-size: clamp(34px, 6vw, 56px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 18px;
            max-width: 800px;
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(245, 246, 248, 0.78);
            max-width: 680px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-item .stat-number {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--neon);
            line-height: 1.2;
        }

        .hero-stat-item .stat-label {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.6);
            letter-spacing: 0.05em;
        }

        /* Data Table Section */
        .data-table-section {
            background: var(--light-bg);
        }

        .data-table-header {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .data-table-header h2 {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .data-table-header .lead {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 600px;
        }

        .table-filter-group {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-chip {
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
        }

        .filter-chip:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .filter-chip.active {
            background: var(--red);
            color: #FFFFFF;
            border-color: var(--red);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .data-table-wrap {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .data-table thead {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .data-table th {
            padding: 16px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .data-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }

        .data-table tbody tr {
            transition: background var(--transition);
        }

        .data-table tbody tr:hover {
            background: rgba(200, 16, 46, 0.03);
        }

        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        .report-date {
            font-family: var(--font-num);
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .report-title-link {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 15px;
            line-height: 1.4;
            display: block;
            transition: color var(--transition);
        }

        .report-title-link:hover {
            color: var(--red);
        }

        .report-category-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(200, 16, 46, 0.08);
            color: var(--red);
            white-space: nowrap;
        }

        .report-category-badge.tactical {
            background: rgba(26, 122, 74, 0.1);
            color: var(--green-accent);
        }

        .report-category-badge.youth {
            background: rgba(255, 77, 46, 0.08);
            color: var(--neon-soft);
        }

        .report-summary-cell {
            color: var(--text-secondary);
            font-size: 13px;
            line-height: 1.6;
            max-width: 360px;
        }

        .report-action-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--red);
            white-space: nowrap;
            transition: all var(--transition);
        }

        .report-action-link:hover {
            color: var(--red-bright);
            gap: 8px;
        }

        /* Report Overview Section */
        .report-overview {
            background: #FFFFFF;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .overview-content h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin-bottom: 18px;
        }

        .overview-content .paragraph {
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 15px;
        }

        .overview-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            position: relative;
        }

        .overview-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .overview-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-card);
            box-shadow: inset 0 0 40px rgba(8, 9, 11, 0.35);
            pointer-events: none;
        }

        .overview-image .image-tag {
            position: absolute;
            bottom: 20px;
            left: 20px;
            z-index: 2;
            background: var(--red);
            color: #FFFFFF;
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.05em;
        }

        /* Dimensions Section */
        .dimensions-section {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .dimensions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .dimension-card {
            background: var(--charcoal);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-dark);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .dimension-card:hover {
            transform: translateY(-4px);
            border-color: rgba(200, 16, 46, 0.4);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .dimension-card .dim-number {
            font-family: var(--font-num);
            font-size: 44px;
            font-weight: 700;
            color: rgba(200, 16, 46, 0.3);
            line-height: 1;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .dimension-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-on-dark);
        }

        .dimension-card p {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.65);
            line-height: 1.7;
        }

        /* Process Section */
        .process-section {
            background: var(--light-bg);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .process-step {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-light);
            transition: all var(--transition);
            position: relative;
        }

        .process-step:hover {
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
            transform: translateY(-2px);
        }

        .process-step .step-number {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 700;
            color: var(--red);
            line-height: 1;
            margin-bottom: 12px;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            background: #FFFFFF;
        }

        .faq-list {
            margin-top: 28px;
            max-width: 860px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
            background: var(--light-bg);
        }

        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.25);
        }

        .faq-item.open {
            border-color: var(--red);
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.1);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--red);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            position: relative;
            transition: transform var(--transition);
        }

        .faq-arrow::before,
        .faq-arrow::after {
            content: '';
            position: absolute;
            background: currentColor;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .faq-arrow::before {
            width: 12px;
            height: 2px;
            top: 8px;
            left: 3px;
        }

        .faq-arrow::after {
            width: 2px;
            height: 12px;
            top: 3px;
            left: 8px;
        }

        .faq-item.open .faq-arrow::after {
            transform: scaleY(0);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: var(--charcoal);
            color: var(--text-on-dark);
            text-align: center;
            padding: 72px 0;
        }

        .cta-section h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(245, 246, 248, 0.7);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 15px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Bottom Fixed Conversion Bar */
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--charcoal);
            border-top: 2px solid var(--neon);
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            max-width: var(--container);
            padding: 0 24px;
        }

        .sticky-cta-text {
            font-size: 14px;
            color: rgba(245, 246, 248, 0.85);
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .sticky-cta-btn {
            padding: 10px 22px;
            background: var(--red);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .sticky-cta-btn:hover {
            background: var(--red-bright);
            box-shadow: 0 0 18px rgba(230, 51, 41, 0.5);
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(245, 246, 248, 0.75);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 246, 248, 0.6);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.6);
            padding: 5px 0;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--neon);
        }

        .footer-col p {
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            margin-bottom: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(245, 246, 248, 0.45);
        }

        .footer-beian {
            display: flex;
            gap: 20px;
        }

        .footer-bottom a {
            color: rgba(245, 246, 248, 0.45);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 68px;
            }
            .main-nav a {
                padding: 6px 10px;
                font-size: 13px;
            }
            .dimensions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                min-height: 55vh;
                padding: 100px 0 48px;
            }
            .data-table th,
            .data-table td {
                padding: 12px 14px;
                font-size: 13px;
            }
            .report-summary-cell {
                max-width: none;
                font-size: 12px;
            }
            .dimensions-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .data-table-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .sticky-cta-inner {
                flex-direction: row;
                gap: 10px;
            }
            .sticky-cta-text {
                font-size: 12px;
                flex: 1;
            }
            .sticky-cta-btn {
                padding: 8px 16px;
                font-size: 12px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .data-table-wrap {
                overflow-x: auto;
                border-radius: 10px;
            }
            .data-table {
                min-width: 640px;
            }
            .filter-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .sticky-cta-bar {
                height: 56px;
            }
            .sticky-cta-text {
                display: none;
            }
            .sticky-cta-btn {
                width: 100%;
                text-align: center;
                justify-content: center;
                display: flex;
            }
            body {
                padding-bottom: 80px;
            }
            .footer-beian {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category5 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }
        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }
        .section-light {
            background: var(--light-bg);
        }
        .section-white {
            background: #FFFFFF;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }
        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }
        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }
        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }
        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }
        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }
        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }
        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }
        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }
        .btn:hover .arrow {
            transform: translateX(4px);
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }
        /* Header Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: var(--darker);
            border-bottom: 2px solid var(--neon);
            height: 70px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: #fff;
            white-space: nowrap;
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--red);
            clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
            display: inline-block;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--silver);
            white-space: nowrap;
            padding: 6px 2px;
            position: relative;
            transition: color var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--neon);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #fff;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.8);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            background: var(--red);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 13px;
            white-space: nowrap;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .nav-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 0 14px rgba(230, 51, 41, 0.45);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
            margin-left: auto;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 1px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Hero */
        .hero-category {
            padding: 150px 0 80px;
            background: var(--charcoal);
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--silver);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--silver);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: var(--red);
        }
        .hero-category h1 {
            font-size: clamp(32px, 5.5vw, 52px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 18px;
            max-width: 850px;
        }
        .hero-category .lead {
            font-size: 17px;
            color: rgba(245, 246, 248, 0.8);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .hero-tag {
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 12px;
            color: var(--silver);
        }
        /* Filter section */
        .filter-section {
            padding: 36px 0 20px;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 70px;
            z-index: 50;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-btn {
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--light-bg);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--red);
            color: var(--red);
        }
        .filter-btn.active {
            background: var(--red);
            color: #fff;
            border-color: var(--red);
            box-shadow: 0 4px 12px rgba(200, 16, 46, 0.3);
        }
        /* Feature cards */
        .feature-cards {
            padding: 56px 0;
            background: #fff;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 28px;
            align-items: stretch;
        }
        .feature-card-main {
            background: var(--charcoal);
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            min-height: 440px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            box-shadow: var(--shadow-dark);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .feature-card-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 0 1px rgba(255,255,255,0.1), 0 20px 40px rgba(0,0,0,0.35);
        }
        .feature-card-main img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
        }
        .feature-card-main .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.85) 20%, rgba(0,0,0,0.2) 70%);
        }
        .feature-card-main .content {
            position: relative;
            z-index: 1;
            padding: 32px;
        }
        .feature-card-main .badge {
            display: inline-block;
            background: var(--red);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .feature-card-main h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 10px;
        }
        .feature-card-main p {
            color: rgba(245, 246, 248, 0.8);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-card-side {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feature-card-small {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            box-shadow: var(--shadow-light);
            transition: all var(--transition);
            flex: 1;
        }
        .feature-card-small:hover {
            box-shadow: 0 12px 28px rgba(0,0,0,0.12);
            transform: translateY(-2px);
            border-color: rgba(200,16,46,0.2);
        }
        .feature-card-small .num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: var(--red);
            line-height: 1;
            min-width: 52px;
        }
        .feature-card-small h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .feature-card-small p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        /* Deep content */
        .deep-content {
            padding: 64px 0;
            background: var(--light-bg);
        }
        .deep-content .grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .deep-content h2 {
            font-size: clamp(26px, 3.5vw, 34px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .deep-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .deep-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .deep-content ul {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }
        .deep-content ul li {
            padding: 8px 0 8px 24px;
            position: relative;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .deep-content ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 17px;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--red);
        }
        .deep-quote {
            border-left: 3px solid var(--red);
            padding: 16px 20px;
            margin: 20px 0;
            background: #fff;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            font-size: 15px;
            color: var(--text-primary);
            box-shadow: var(--shadow-light);
            font-style: italic;
        }
        .deep-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            margin-bottom: 20px;
        }
        .deep-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .deep-image:hover img {
            transform: scale(1.04);
        }
        /* FAQ */
        .faq-section {
            padding: 72px 0;
            background: #fff;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active {
            border-color: var(--red);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: #fff;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--light-bg);
        }
        .faq-question .icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-question .icon::before,
        .faq-question .icon::after {
            content: '';
            position: absolute;
            background: var(--red);
            border-radius: 2px;
        }
        .faq-question .icon::before {
            width: 14px;
            height: 2px;
            top: 9px;
            left: 3px;
        }
        .faq-question .icon::after {
            width: 2px;
            height: 14px;
            top: 3px;
            left: 9px;
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(90deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        /* CTA */
        .cta-section {
            padding: 72px 0;
            background: var(--charcoal);
            color: var(--text-on-dark);
        }
        .cta-box {
            background: var(--darker);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-dark);
        }
        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .cta-box p {
            color: rgba(245, 246, 248, 0.75);
            font-size: 15px;
            max-width: 520px;
        }
        /* Bottom fixed conversion bar */
        .bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: var(--darker);
            border-top: 2px solid var(--red);
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            gap: 16px;
        }
        .bottom-cta .text {
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.01em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .bottom-cta .btn {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: 6px;
            flex-shrink: 0;
        }
        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(245, 246, 248, 0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 18px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--silver);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--silver);
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col p {
            font-size: 13px;
            color: var(--silver);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--silver);
        }
        .footer-bottom a {
            color: var(--silver);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-beian {
            display: flex;
            gap: 16px; }
        .footer-beian span {
            font-size: 12px;
            color: var(--silver);
        }
        .site-footer .footer-bottom a {
            display: inline-block;
        }
        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .section-dark .section-header h2 {
            color: var(--text-on-dark);
        }
        .section-dark .section-header p {
            color: rgba(245, 246, 248, 0.75);
        }
        .data-strip {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin: 24px 0;
        }
        .data-item {
            display: flex;
            flex-direction: column;
        }
        .data-item .value {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--red);
            line-height: 1.1;
        }
        .data-item .label {
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
            margin-top: 4px;
        }
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card-main {
                min-height: 360px;
            }
            .deep-content .grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--darker);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                transform: translateY(-120%);
                transition: transform 300ms ease;
                border-bottom: 2px solid var(--neon);
                max-height: calc(100vh - 70px);
                overflow-y: auto;
                align-items: stretch;
                z-index: 99;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav a {
                font-size: 16px;
                padding: 12px 4px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .site-header .container {
                gap: 12px;
            }
            .hero-category {
                padding: 120px 0 60px;
            }
            .hero-category h1 {
                font-size: 30px;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                align-items: stretch;
                padding: 32px 20px;
            }
            .cta-box .btn {
                justify-content: center;
            }
            .bottom-cta {
                flex-direction: column;
                height: auto;
                padding: 10px 16px;
                gap: 8px;
            }
            .bottom-cta .text {
                white-space: normal;
                font-size: 13px;
                text-align: center;
            }
            .bottom-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: 56px 0;
            }
            .feature-cards {
                padding: 40px 0;
            }
            .deep-content {
                padding: 48px 0;
            }
            .faq-section {
                padding: 48px 0;
            }
            .cta-section {
                padding: 48px 0;
            }
            .filter-section {
                top: 60px;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 26px;
            }
            .hero-tags {
                gap: 6px;
            }
            .hero-tag {
                font-size: 11px;
                padding: 4px 10px;
            }
            .feature-card-main .content {
                padding: 20px;
            }
            .feature-card-main h3 {
                font-size: 20px;
            }
            .filter-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
            .faq-question {
                padding: 16px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category6 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }
        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }
        .section-light {
            background: var(--light-bg);
        }
        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }
        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }
        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }
        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }
        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }
        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }
        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }
        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }
        .btn:hover .arrow {
            transform: translateX(4px);
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--darker);
            border-bottom: 2px solid var(--neon);
            height: 68px;
            display: flex;
            align-items: center;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--red), var(--neon-soft));
            border-radius: 6px;
            position: relative;
            flex-shrink: 0;
        }
        .logo-icon::after {
            content: '';
            position: absolute;
            top: 5px;
            left: 9px;
            width: 8px;
            height: 14px;
            border: 2px solid #FFFFFF;
            border-top: none;
            border-bottom: none;
            transform: skewX(-12deg);
        }
        .logo-icon::before {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 6px;
            width: 16px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 1px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 14px;
            letter-spacing: 0.05em;
            color: rgba(255, 255, 255, 0.7);
            padding: 8px 12px;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus-visible {
            color: #FFFFFF;
        }
        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 16, 46, 0.25);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--neon);
            border-radius: 1px;
            box-shadow: 0 0 8px rgba(255, 59, 48, 0.7);
        }
        .nav-cta {
            background: var(--red);
            color: #FFFFFF;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 0 18px rgba(230, 51, 41, 0.6);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 28px;
            justify-content: center;
            align-items: center;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 1px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--darker);
            z-index: 999;
            padding: 32px 24px;
            overflow-y: auto;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer a {
            display: block;
            font-size: 20px;
            color: rgba(255, 255, 255, 0.85);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 0.02em;
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: var(--neon);
        }

        /* Hero */
        .category-hero {
            position: relative;
            min-height: 58vh;
            display: flex;
            align-items: center;
            padding-top: 68px;
            background: var(--darker);
            overflow: hidden;
            background-image: linear-gradient(180deg, rgba(8, 9, 11, 0.8) 0%, rgba(8, 9, 11, 0.6) 40%, rgba(8, 9, 11, 0.85) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            color: var(--text-on-dark);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--red), var(--neon), transparent);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }
        .breadcrumb a:hover {
            color: var(--neon);
        }
        .breadcrumb .sep {
            color: var(--red);
            font-weight: 700;
        }
        .breadcrumb .current {
            color: var(--neon);
            font-weight: 600;
        }
        .category-hero h1 {
            font-size: clamp(34px, 6vw, 56px);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #FFFFFF;
            margin-bottom: 18px;
            max-width: 720px;
        }
        .category-hero .hero-sub {
            font-size: clamp(15px, 2vw, 18px);
            color: rgba(245, 246, 248, 0.8);
            max-width: 660px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            font-family: var(--font-num);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta .meta-dot {
            width: 5px;
            height: 5px;
            background: var(--neon);
            border-radius: 50%;
        }

        /* 图库网格 */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 18px;
            margin-top: 40px;
        }
        .gallery-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--charcoal);
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .gallery-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
        }
        .gallery-card a {
            display: block;
            width: 100%;
            height: 100%;
        }
        .gallery-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 420ms cubic-bezier(0.4, 0, 0.2, 1);
            aspect-ratio: 16/10;
        }
        .gallery-card:hover img {
            transform: scale(1.05);
        }
        .gallery-card--large {
            grid-column: span 6;
            grid-row: span 2;
        }
        .gallery-card--large img {
            aspect-ratio: 16/9;
            height: 100%;
        }
        .gallery-card--wide {
            grid-column: span 6;
        }
        .gallery-card--wide img {
            aspect-ratio: 16/7;
        }
        .gallery-card--std {
            grid-column: span 3;
        }
        .gallery-card--std img {
            aspect-ratio: 3/4;
        }
        .gallery-card--tall {
            grid-column: span 3;
            grid-row: span 2;
        }
        .gallery-card--tall img {
            aspect-ratio: auto;
            height: 100%;
        }

        .gallery-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 9, 11, 0.35) 55%, rgba(8, 9, 11, 0.88) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
            color: #FFFFFF;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .gallery-card:hover .gallery-overlay,
        .gallery-card:focus-within .gallery-overlay {
            opacity: 1;
        }
        .gallery-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--neon);
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .gallery-overlay h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .gallery-overlay p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.5;
            margin-bottom: 12px;
        }
        .gallery-action {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: #FFFFFF;
            background: var(--red);
            padding: 8px 18px;
            border-radius: 6px;
            transition: all var(--transition);
            width: fit-content;
        }
        .gallery-action .play-icon {
            width: 12px;
            height: 12px;
            border: 2px solid #FFFFFF;
            border-top: 6px solid transparent;
            border-bottom: 6px solid transparent;
            border-right: none;
            border-left-width: 10px;
            border-left-color: #FFFFFF;
            transform: translateX(2px);
        }
        .gallery-action:hover {
            background: var(--red-bright);
            box-shadow: 0 0 14px rgba(230, 51, 41, 0.6);
        }

        /* 深度内容 */
        .deep-content {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: start;
        }
        .deep-content .dc-text h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.015em;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .deep-content .dc-text h3 {
            font-size: 22px;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin: 28px 0 14px;
            color: var(--text-primary);
        }
        .deep-content .dc-text p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 16px;
            text-align: justify;
        }
        .deep-content .dc-quote {
            border-left: 3px solid var(--red);
            padding: 16px 20px;
            margin: 24px 0;
            background: rgba(200, 16, 46, 0.04);
            border-radius: 0 10px 10px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.7;
        }
        .dc-points {
            list-style: none;
            margin: 16px 0;
            padding: 0;
        }
        .dc-points li {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 22px;
            position: relative;
            margin-bottom: 8px;
        }
        .dc-points li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            background: var(--red);
            border-radius: 50%;
        }
        .deep-content .dc-image {
            position: sticky;
            top: 100px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-light);
        }
        .deep-content .dc-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 32px auto 0;
        }
        .faq-item {
            background: transparent;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 59, 48, 0.4);
        }
        .faq-item.active {
            border-color: var(--red);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-on-dark);
            cursor: pointer;
            text-align: left;
            letter-spacing: 0.01em;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--neon);
            transition: all var(--transition);
            font-family: var(--font-num);
        }
        .faq-item.active .faq-icon {
            border-color: var(--red);
            background: var(--red);
            color: #FFFFFF;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: rgba(245, 246, 248, 0.75);
        }

        /* CTA */
        .cta-panel {
            background: var(--charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            border: 1px solid var(--border-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--red), var(--neon), var(--red));
        }
        .cta-panel .cta-content {
            flex: 1;
        }
        .cta-panel .cta-content h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .cta-panel .cta-content p {
            font-size: 15px;
            color: rgba(245, 246, 248, 0.72);
            line-height: 1.7;
        }
        .cta-panel .cta-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        /* 底部固定转化条 */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--darker);
            border-top: 2px solid var(--red);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 60px;
        }
        .sticky-cta .sticky-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
        }
        .sticky-cta .sticky-text strong {
            color: var(--neon);
            font-weight: 600;
        }
        .sticky-cta .btn {
            flex-shrink: 0;
        }

        /* 页脚 */
        .site-footer {
            background: var(--darker);
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 22px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col a,
        .footer-col p {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            transition: color var(--transition);
            line-height: 1.5;
        }
        .footer-col a:hover {
            color: var(--neon);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* 滚动淡入 */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1), transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .main-nav a {
                font-size: 13px;
                padding: 6px 8px;
            }
            .nav-cta {
                display: none;
            }
            .gallery-card--std {
                grid-column: span 6;
            }
            .gallery-card--large,
            .gallery-card--wide {
                grid-column: span 12;
            }
            .gallery-card--tall {
                grid-column: span 6;
                grid-row: span 1;
            }
            .gallery-card--tall img {
                aspect-ratio: 16/10;
            }
            .deep-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .deep-content .dc-image {
                position: static;
                order: -1;
            }
            .deep-content .dc-image img {
                max-height: 360px;
                object-fit: cover;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-drawer.open {
                display: block;
            }
            .category-hero {
                min-height: 50vh;
            }
            .category-hero h1 {
                font-size: clamp(28px, 7vw, 38px);
            }
            .gallery-grid {
                gap: 12px;
                grid-template-columns: repeat(2, 1fr);
            }
            .gallery-card--large,
            .gallery-card--wide,
            .gallery-card--std,
            .gallery-card--tall {
                grid-column: span 2;
                grid-row: span 1;
            }
            .gallery-card--large img,
            .gallery-card--wide img,
            .gallery-card--std img,
            .gallery-card--tall img {
                aspect-ratio: 16/10;
                height: auto;
            }
            .gallery-overlay {
                opacity: 1;
                padding: 14px;
            }
            .gallery-overlay h3 {
                font-size: 15px;
            }
            .gallery-overlay p {
                display: none;
            }
            .gallery-tag {
                font-size: 10px;
            }
            .cta-panel {
                flex-direction: column;
                text-align: left;
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .sticky-cta {
                flex-direction: row;
                align-items: center;
                padding: 10px 16px;
            }
            .sticky-cta .sticky-text {
                font-size: 13px;
            }
            .sticky-cta .btn {
                padding: 10px 16px;
                font-size: 13px;
                white-space: nowrap;
            }
        }

        @media (max-width: 520px) {
            .gallery-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .gallery-card--large,
            .gallery-card--wide,
            .gallery-card--std,
            .gallery-card--tall {
                grid-column: 1;
            }
            .gallery-card img {
                aspect-ratio: 16/9;
            }
            .category-hero {
                min-height: 45vh;
            }
            .breadcrumb {
                font-size: 12px;
                gap: 4px;
            }
            .hero-meta {
                font-size: 12px;
                gap: 12px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
            .sticky-cta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 12px 16px;
            }
            .sticky-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding: 48px 0;
            }
        }

/* roulang page: category7 */
:root {
            --red: #C8102E;
            --red-bright: #E63329;
            --neon: #FF3B30;
            --neon-soft: #FF4D2E;
            --charcoal: #0B0C0F;
            --dark: #0D0E10;
            --darker: #08090B;
            --silver: #A7ADB5;
            --green-accent: #1A7A4A;
            --light-bg: #F5F6F8;
            --text-primary: #17181C;
            --text-secondary: #5E636D;
            --text-on-dark: #F5F6F8;
            --border-light: rgba(0, 0, 0, 0.06);
            --border-dark: rgba(255, 255, 255, 0.08);
            --shadow-light: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-dark: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 12px 32px rgba(0, 0, 0, 0.25);
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --radius-img: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-num: 'Inter', 'DIN', 'Archivo', sans-serif;
            --container: 1240px;
            --spacing-section: 96px;
            --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--light-bg);
            padding-bottom: 96px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-sans);
            font-size: inherit;
        }

        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--spacing-section) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-dark {
            background: var(--dark);
            color: var(--text-on-dark);
        }

        .section-charcoal {
            background: var(--charcoal);
            color: var(--text-on-dark);
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--red);
            margin-bottom: 14px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--red);
            border-radius: 2px;
        }

        .section-dark p,
        .section-charcoal p,
        .section-dark .paragraph,
        .section-charcoal .paragraph {
            color: rgba(245, 246, 248, 0.78);
        }

        .section-dark h2,
        .section-charcoal h2,
        .section-dark h3,
        .section-charcoal h3 {
            color: var(--text-on-dark);
        }

        h1,
        h2,
        h3,
        h4 {
            font-weight: 600;
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        h1 {
            font-size: clamp(34px, 6vw, 56px);
        }

        h2 {
            font-size: clamp(26px, 4vw, 40px);
        }

        h3 {
            font-size: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--red);
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }

        .btn-primary:hover {
            background: var(--red-bright);
            box-shadow: 0 6px 24px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-on-dark);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-btn);
        }

        .btn-outline:hover {
            border-color: var(--neon);
            color: var(--neon);
            box-shadow: 0 0 16px rgba(255, 59, 48, 0.25);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-btn);
        }

        .btn-outline-light:hover {
            border-color: var(--red);
            color: var(--red);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
        }

        .btn .arrow {
            display: inline-block;
            transition: transform var(--transition);
        }

        .btn:hover .arrow {
            transform: translateX(4px);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: var(--darker);
            border-bottom: 2px solid var(--red);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-block;
            width: 28px;
            height: 28px;
            background: linear-gradient(135deg, var(--red) 0%, var(--red-bright) 100%);
            clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 6px 13px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--silver);
            border-radius: 6px;
            position: relative;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .main-nav a:hover {
            color: #FFFFFF;
        }

        .main-nav a:hover::after {
            width: 60%;
        }

        .main-nav a.active {
            color: #FFFFFF;
        }

        .main-nav a.active::after {
            width: 60%;
            background: var(--neon);
            box-shadow: 0 0 8px var(--neon);
        }

        .header-cta {
            background: var(--red);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            transition: all var(--transition);
            flex-shrink: 0;
            box-shadow: 0 2px 12px rgba(200, 16, 46, 0.3);
        }

        .header-cta:hover {
            background: var(--red-bright);
            box-shadow: 0 4px 20px rgba(230, 51, 41, 0.5);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: transparent;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--darker);
            z-index: 199;
            padding: 32px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 18px;
            font-size: 20px;
            font-weight: 500;
            color: var(--silver);
            border-radius: 10px;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(255, 255, 255, 0.05);
            color: #FFFFFF;
        }

        .mobile-menu a.active {
            border-left: 3px solid var(--neon);
        }

        /* Hero */
        .page-hero {
            background: var(--charcoal);
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
            padding: 72px 0 80px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 70% 30%, rgba(200, 16, 46, 0.2) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 80%, rgba(26, 122, 74, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }

        .page-hero .hero-grid {
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(245, 246, 248, 0.55);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }

        .breadcrumb a {
            color: rgba(245, 246, 248, 0.55);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--neon);
        }

        .breadcrumb .sep {
            color: rgba(245, 246, 248, 0.3);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--text-on-dark);
            font-weight: 500;
        }

        .page-hero h1 {
            color: #FFFFFF;
            font-size: clamp(30px, 4.8vw, 48px);
            line-height: 1.18;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .page-hero .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(245, 246, 248, 0.72);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-dark);
            border: 1px solid rgba(255, 255, 255, 0.08);
            aspect-ratio: 4 / 3;
        }

        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
            transition: transform 0.5s ease;
        }

        .hero-image:hover img {
            transform: scale(1.05);
        }

        .hero-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(200, 16, 46, 0.35) 0%, transparent 50%, rgba(11, 12, 15, 0.4) 100%);
            pointer-events: none;
            border-radius: var(--radius-card);
        }

        .hero-image .badge-overlay {
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(8, 9, 11, 0.85);
            backdrop-filter: blur(8px);
            padding: 10px 18px;
            border-radius: 8px;
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 资源条目列表 */
        .resource-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .resource-item {
            display: grid;
            grid-template-columns: 80px 1fr auto;
            gap: 24px;
            align-items: center;
            padding: 28px 8px;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }

        .resource-item:first-child {
            border-top: 1px solid var(--border-light);
        }

        .resource-item:hover {
            padding-left: 20px;
            border-bottom-color: var(--red);
            background: rgba(255, 255, 255, 0.6);
        }

        .resource-item .item-number {
            font-family: var(--font-num);
            font-size: 42px;
            font-weight: 700;
            color: var(--red);
            letter-spacing: -0.03em;
            line-height: 1;
            transition: all var(--transition);
        }

        .resource-item:hover .item-number {
            color: var(--red-bright);
            text-shadow: 0 0 20px rgba(200, 16, 46, 0.3);
        }

        .resource-item .item-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .resource-item .item-content .item-summary {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 680px;
        }

        .resource-item .item-actions {
            flex-shrink: 0;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--red);
            transition: all var(--transition);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .read-more .arrow {
            display: inline-block;
            transition: transform var(--transition);
            font-size: 16px;
        }

        .read-more:hover {
            color: var(--red-bright);
        }

        .read-more:hover .arrow {
            transform: translateX(4px);
        }

        .item-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--green-accent);
            background: rgba(26, 122, 74, 0.08);
            padding: 3px 10px;
            border-radius: 999px;
            margin-right: 8px;
        }

        /* 深度内容区 */
        .deep-content {
            background: #FFFFFF;
        }

        .deep-content .content-body {
            max-width: 800px;
            margin: 0 auto;
        }

        .deep-content .content-body h2 {
            color: var(--text-primary);
            font-size: clamp(24px, 3vw, 32px);
            margin: 40px 0 18px;
            letter-spacing: -0.015em;
        }

        .deep-content .content-body h2:first-child {
            margin-top: 0;
        }

        .deep-content .content-body h3 {
            color: var(--text-primary);
            font-size: 19px;
            margin: 28px 0 12px;
            letter-spacing: -0.01em;
        }

        .deep-content .content-body p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content .content-body blockquote {
            border-left: 3px solid var(--red);
            padding: 16px 20px;
            margin: 24px 0;
            background: #F9FAFB;
            border-radius: 0 10px 10px 0;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 500;
            line-height: 1.8;
        }

        .deep-content .content-body ul {
            list-style: none;
            margin: 16px 0;
            padding: 0;
        }

        .deep-content .content-body ul li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        .deep-content .content-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 11px;
            width: 10px;
            height: 10px;
            background: var(--red);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
        }

        /* 数据要点 */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-card {
            background: var(--darker);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .data-card:hover {
            border-color: rgba(255, 59, 48, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }

        .data-card .data-number {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            color: var(--neon);
            letter-spacing: -0.03em;
            margin-bottom: 8px;
            line-height: 1;
        }

        .data-card .data-label {
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: rgba(245, 246, 248, 0.6);
            text-transform: uppercase;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--darker);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 59, 48, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-on-dark);
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: left;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            margin-left: 16px;
            font-size: 22px;
            color: var(--silver);
            transition: all var(--transition);
            line-height: 1;
        }

        .faq-item.active .faq-icon {
            color: var(--neon);
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            line-height: 1.8;
            color: rgba(245, 246, 248, 0.7);
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeIn 0.25s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(160deg, var(--darker) 0%, #1A0D0F 50%, var(--charcoal) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-text h2 {
            color: #FFFFFF;
            font-size: clamp(24px, 3.2vw, 36px);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .cta-text p {
            color: rgba(245, 246, 248, 0.7);
            font-size: 15px;
            line-height: 1.8;
            max-width: 480px;
        }

        .cta-form-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(8px);
        }

        .cta-form-card h3 {
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .form-group {
            margin-bottom: 14px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(245, 246, 248, 0.6);
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            background: #14161A;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            padding: 12px 16px;
            color: #FFFFFF;
            font-size: 15px;
            transition: all var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--red);
            box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.2);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(245, 246, 248, 0.3);
        }

        .form-submit {
            width: 100%;
            margin-top: 6px;
        }

        /* 底部固定转化条 */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 150;
            background: var(--darker);
            border-top: 1px solid var(--red);
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.35);
            padding: 0;
        }

        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 60px;
            padding: 8px 24px;
        }

        .sticky-cta-text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(245, 246, 248, 0.8);
            letter-spacing: 0.03em;
        }

        .sticky-cta-text strong {
            color: #FFFFFF;
            font-weight: 600;
        }

        .sticky-cta .btn {
            flex-shrink: 0;
            padding: 10px 22px;
            font-size: 14px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--darker);
            color: rgba(245, 246, 248, 0.7);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(245, 246, 248, 0.6);
            max-width: 280px;
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 246, 248, 0.6);
            padding: 5px 0;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--neon);
            padding-left: 6px;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.9;
            color: rgba(245, 246, 248, 0.55);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: rgba(245, 246, 248, 0.45);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(245, 246, 248, 0.45);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--neon);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 68px;
            }

            .container {
                padding: 0 20px;
            }

            .page-hero .hero-grid {
                grid-template-columns: 1fr 320px;
                gap: 36px;
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }

            body {
                padding-bottom: 80px;
            }

            .main-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .page-hero {
                padding: 48px 0 56px;
            }

            .page-hero .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .page-hero h1 {
                font-size: clamp(26px, 7vw, 36px);
            }

            .hero-image {
                aspect-ratio: 16 / 10;
            }

            .resource-item {
                grid-template-columns: 56px 1fr;
                gap: 16px;
                padding: 20px 4px;
            }

            .resource-item:hover {
                padding-left: 8px;
            }

            .resource-item .item-number {
                font-size: 30px;
            }

            .resource-item .item-content h3 {
                font-size: 16px;
            }

            .resource-item .item-actions {
                grid-column: 2;
                margin-top: 4px;
            }

            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .data-card {
                padding: 20px 16px;
            }

            .data-card .data-number {
                font-size: 30px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }

            .cta-form-card {
                padding: 20px;
            }

            .sticky-cta-inner {
                flex-direction: column;
                gap: 8px;
                padding: 10px 16px;
                min-height: auto;
            }

            .sticky-cta-text {
                text-align: center;
                font-size: 13px;
            }

            .sticky-cta .btn {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .footer-beian {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-hero h1 {
                font-size: clamp(24px, 8vw, 32px);
            }

            .resource-item {
                grid-template-columns: 1fr;
                gap: 8px;
                padding: 16px 0;
            }

            .resource-item .item-number {
                font-size: 24px;
            }

            .resource-item .item-actions {
                grid-column: 1;
            }

            .data-strip {
                grid-template-columns: 1fr;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
        }