/* roulang page: index */
:root {
            --primary: #8B5CF6;
            --primary-light: #A78BFA;
            --primary-dark: #7C3AED;
            --accent: #22D3EE;
            --warning: #F59E0B;
            --success: #22C55E;
            --danger: #EF4444;
            --bg: #0C0A14;
            --bg-2: #141128;
            --bg-3: #1A1730;
            --bg-hover: #201C3D;
            --text: #F5F4FA;
            --text-2: #A8A4C0;
            --text-3: #6F6B87;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(139, 92, 246, 0.5);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-xs: 8px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-cta: 0 0 20px rgba(139, 92, 246, 0.35);
            --shadow-cta-hover: 0 0 36px rgba(139, 92, 246, 0.55);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-md);
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            position: relative;
            border: 1px solid transparent;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-cta-hover);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: rgba(34, 211, 238, 0.1);
            border-color: var(--accent);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.5px;
            background: rgba(245, 158, 11, 0.15);
            color: var(--warning);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .badge-primary {
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            border-color: rgba(139, 92, 246, 0.3);
        }
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-2);
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 999px;
            background: rgba(139, 92, 246, 0.12);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 14px;
            border: 1px solid rgba(139, 92, 246, 0.25);
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header h2 span {
            color: var(--primary-light);
        }
        .section-header p {
            color: var(--text-2);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(12, 10, 20, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-badge {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.5px;
            box-shadow: 0 0 16px rgba(139, 92, 246, 0.4);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            background: linear-gradient(90deg, var(--text), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            padding: 10px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-2);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--text);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .countdown {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.2);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
        }
        .countdown-label {
            color: var(--warning);
            font-weight: 500;
            font-size: 12px;
        }
        .countdown-timer {
            font-variant-numeric: tabular-nums;
            color: var(--warning);
            font-weight: 700;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--text);
            padding: 6px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(12, 10, 20, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            z-index: 999;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            border-radius: 10px;
        }
        .mobile-menu .nav-link.active {
            background: rgba(139, 92, 246, 0.12);
            color: var(--primary-light);
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }
        .mobile-menu .btn {
            margin-top: 10px;
            width: 100%;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 72vh;
            min-height: 640px;
            display: flex;
            align-items: center;
            background: var(--bg);
            overflow: hidden;
            padding: 40px 0;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg,
                    rgba(12, 10, 20, 0.97) 0%,
                    rgba(12, 10, 20, 0.88) 40%,
                    rgba(12, 10, 20, 0.55) 75%,
                    rgba(12, 10, 20, 0.4) 100%);
        }
        .hero-visual-bg {
            position: absolute;
            right: -80px;
            top: 50%;
            transform: translateY(-50%);
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .hero-visual-bg2 {
            position: absolute;
            left: -100px;
            bottom: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content {
            max-width: 620px;
        }
        .hero-badge-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 22px;
            flex-wrap: wrap;
        }
        .hero-badge-row .badge {
            font-size: 13px;
            padding: 6px 16px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-ctas {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-3);
        }
        .hero-meta-item i {
            color: var(--accent);
            font-style: normal;
            font-size: 16px;
        }
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual .frame {
            position: relative;
            border-radius: 20px;
            padding: 12px;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(34, 211, 238, 0.15));
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            transform: rotate(2deg);
        }
        .hero-visual img {
            border-radius: 14px;
            max-height: 420px;
            object-fit: cover;
            width: 100%;
        }
        .hero-scroll {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-3);
            font-size: 13px;
            z-index: 2;
            animation: fadeInDown 2s infinite;
        }
        .hero-scroll .line {
            width: 1px;
            height: 30px;
            background: var(--text-3);
        }

        /* Categories */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-3);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: block;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .category-card .card-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--bg-2);
        }
        .category-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .category-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .category-card .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(12, 10, 20, 0.7));
        }
        .category-card .card-num {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(12, 10, 20, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-light);
            transition: all var(--transition);
        }
        .category-card:hover .card-num {
            color: var(--accent);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .category-card .card-body {
            padding: 22px 20px 24px;
            position: relative;
            z-index: 2;
        }
        .category-card .card-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .category-card .card-desc {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .category-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .category-card .card-link:hover {
            gap: 10px;
        }

        /* Featured */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feat-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-3);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feat-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .feat-card .feat-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-2);
        }
        .feat-card .feat-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .feat-card:hover .feat-cover img {
            transform: scale(1.05);
        }
        .feat-card .feat-cover .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }
        .feat-card .feat-body {
            padding: 22px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feat-card .feat-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .feat-card .feat-title a:hover {
            color: var(--primary-light);
        }
        .feat-card .feat-desc {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .feat-card .feat-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-3);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            font-variant-numeric: tabular-nums;
        }
        .feat-card .feat-meta .arrow {
            color: var(--accent);
            font-size: 16px;
            transition: transform var(--transition);
        }
        .feat-card:hover .feat-meta .arrow {
            transform: translateX(4px);
        }

        /* News List */
        .news-section {
            background: var(--bg-2);
        }
        .news-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .news-item {
            display: grid;
            grid-template-columns: 120px 1fr auto;
            align-items: center;
            gap: 24px;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-3);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            transition: all var(--transition);
            position: relative;
        }
        .news-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            bottom: 20%;
            width: 2px;
            border-radius: 2px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .news-item:hover {
            background: var(--bg-hover);
            border-color: var(--border-hover);
            transform: translateX(4px);
        }
        .news-item:hover::before {
            opacity: 1;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-3);
            font-variant-numeric: tabular-nums;
        }
        .news-info {
            min-width: 0;
        }
        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            display: block;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-title:hover {
            color: var(--primary-light);
        }
        .news-summary {
            font-size: 14px;
            color: var(--text-2);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-cat {
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent);
            border: 1px solid rgba(34, 211, 238, 0.2);
            white-space: nowrap;
        }
        .news-link {
            font-size: 14px;
            color: var(--accent);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link:hover {
            gap: 8px;
        }
        .news-empty {
            text-align: center;
            padding: 60px 24px;
            background: var(--bg-3);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
        }
        .news-empty .empty-icon {
            font-size: 48px;
            margin-bottom: 16px;
            display: block;
        }
        .news-empty p {
            color: var(--text-2);
            font-size: 15px;
            margin-bottom: 20px;
        }

        /* Rankings */
        .rankings-wrap {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .ranking-card {
            background: var(--bg-3);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 28px;
            transition: all var(--transition);
        }
        .ranking-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }
        .ranking-card .ranking-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .ranking-card .ranking-title {
            font-size: 18px;
            font-weight: 700;
        }
        .ranking-card .ranking-count {
            font-size: 13px;
            color: var(--text-3);
            font-variant-numeric: tabular-nums;
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .ranking-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: var(--border);
        }
        .ranking-item .rank-num {
            font-size: 24px;
            font-weight: 900;
            color: var(--text-3);
            width: 44px;
            text-align: center;
            font-variant-numeric: tabular-nums;
            transition: all var(--transition);
        }
        .ranking-item:hover .rank-num {
            color: var(--primary-light);
            text-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
        }
        .ranking-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-item .rank-name {
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ranking-item .rank-desc {
            font-size: 13px;
            color: var(--text-3);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ranking-item .rank-tag {
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.1);
            color: var(--warning);
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        /* Share CTA */
        .share-section {
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .share-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(139, 92, 246, 0.15), transparent 70%);
            pointer-events: none;
        }
        .share-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .share-section p {
            color: var(--text-2);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto 36px;
        }
        .share-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .share-popover {
            position: relative;
        }
        .share-popover .share-btns {
            position: absolute;
            bottom: calc(100% + 12px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            background: var(--bg-3);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 12px;
            display: flex;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-hover);
            z-index: 10;
        }
        .share-popover:hover .share-btns {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .share-btns .share-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-2);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .share-btns .share-icon:hover {
            background: rgba(139, 92, 246, 0.2);
            color: var(--primary-light);
            border-color: rgba(139, 92, 246, 0.3);
        }

        /* FAQ */
        .faq-wrap {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 50px;
            align-items: start;
        }
        .faq-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: sticky;
            top: 100px;
        }
        .faq-visual img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .faq-panel {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border-radius: var(--radius-md);
            background: var(--bg-3);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
        }
        .faq-q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            border: 1px solid rgba(139, 92, 246, 0.2);
            transition: all var(--transition);
        }
        .faq-item.open .faq-q-icon {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent);
            border-color: rgba(34, 211, 238, 0.3);
        }
        .faq-toggle {
            margin-left: auto;
            width: 24px;
            height: 24px;
            position: relative;
            flex-shrink: 0;
        }
        .faq-toggle::before,
        .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--text-2);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .faq-toggle::before {
            width: 16px;
            height: 2px;
            top: 11px;
            left: 4px;
        }
        .faq-toggle::after {
            width: 2px;
            height: 16px;
            top: 4px;
            left: 11px;
        }
        .faq-item.open .faq-toggle::after {
            transform: scaleY(0);
        }
        .faq-item.open .faq-toggle::before {
            background: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 22px 64px;
            font-size: 15px;
            color: var(--text-2);
            line-height: 1.8;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(34, 211, 238, 0.1)), url('/assets/images/backpic/back-2.png') center/cover;
            position: relative;
            border-radius: var(--radius-lg);
            padding: 80px 48px;
            text-align: center;
            overflow: hidden;
            border: 1px solid rgba(139, 92, 246, 0.3);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(12, 10, 20, 0.7);
            backdrop-filter: blur(4px);
        }
        .cta-banner>* {
            position: relative;
            z-index: 2;
        }
        .cta-banner h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-banner p {
            font-size: 16px;
            color: var(--text-2);
            margin-bottom: 30px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-2);
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
            margin-top: 90px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-2);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 14px;
            color: var(--text-3);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .footer-links a {
            font-size: 14px;
            color: var(--text-3);
            transition: color var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--text-2);
        }

        /* Animations */
        @keyframes fadeInDown {
            0% {
                opacity: 0;
                transform: translate(-50%, -10px);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, 0);
            }
            100% {
                opacity: 0;
                transform: translate(-50%, 10px);
            }
        }
        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 16px rgba(245, 158, 11, 0.3);
            }
            50% {
                box-shadow: 0 0 32px rgba(245, 158, 11, 0.6);
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
                margin: 0 auto;
            }
            .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-ctas {
                justify-content: center;
            }
            .hero-meta {
                justify-content: center;
            }
            .hero-visual {
                display: none;
            }
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-wrap {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .faq-visual {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .header-actions .countdown {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-ctas .btn {
                width: 100%;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .rankings-wrap {
                grid-template-columns: 1fr;
            }
            .news-item {
                grid-template-columns: 1fr;
                gap: 10px;
                padding: 18px;
            }
            .news-item::before {
                display: none;
            }
            .news-date {
                font-size: 12px;
            }
            .news-cat {
                justify-self: start;
            }
            .news-link {
                justify-self: start;
            }
            .cta-banner {
                padding: 50px 24px;
            }
            .cta-banner h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .share-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .share-popover {
                width: 100%;
            }
            .share-popover .btn {
                width: 100%;
            }
            .share-popover .share-btns {
                left: auto;
                right: 0;
                transform: translateY(8px);
            }
            .share-popover:hover .share-btns {
                transform: translateY(0);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 64px;
                gap: 10px;
            }
            .logo-text {
                font-size: 16px;
            }
            .header-actions .btn {
                display: none;
            }
            .news-summary {
                display: none;
            }
            .ranking-item .rank-desc {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --primary: #8B5CF6;
            --primary-dark: #7C3AED;
            --primary-light: #A78BFA;
            --secondary: #22D3EE;
            --accent: #F59E0B;
            --bg: #0C0A14;
            --bg-secondary: #141128;
            --bg-card: #1A1730;
            --bg-hover: #201C3D;
            --text-main: #F5F4FA;
            --text-secondary: #A8A4C0;
            --text-muted: #6F6B87;
            --border: rgba(255,255,255,0.08);
            --border-hover: rgba(139,92,246,0.5);
            --success: #22C55E;
            --danger: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.3);
            --shadow-hover: 0 10px 30px rgba(0,0,0,0.45);
            --glow-primary: 0 0 20px rgba(139,92,246,0.35);
            --glow-primary-hover: 0 0 36px rgba(139,92,246,0.55);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(12, 10, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-badge {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #A78BFA, #7C3AED);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 15px;
            color: #fff;
            letter-spacing: 0.5px;
            box-shadow: 0 0 16px rgba(124, 58, 237, 0.55);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #F5F4FA 20%, #A78BFA 90%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color 0.25s;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--secondary));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s ease;
        }

        .nav-link:hover {
            color: var(--text-main);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--text-main);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-timer {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.25);
            border-radius: 30px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }

        .nav-timer i {
            font-size: 12px;
        }

        .btn-nav {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            border-radius: 10px;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--glow-primary);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-nav:hover {
            transform: scale(1.03);
            box-shadow: var(--glow-primary-hover);
        }

        .menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-main);
            font-size: 22px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
        }

        /* 文章页 */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(12,10,20,0.92), rgba(20,17,40,0.88)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 70px 0 48px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .article-banner::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.22);
            filter: blur(90px);
            top: -100px;
            right: -60px;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.25s;
        }

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

        .breadcrumb i {
            font-size: 12px;
            color: var(--text-muted);
        }

        .breadcrumb .current {
            color: var(--text-secondary);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 211, 238, 0.14);
            color: var(--secondary);
            border: 1px solid rgba(34, 211, 238, 0.3);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .article-category i {
            font-size: 12px;
        }

        .article-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.5px;
            max-width: 880px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #F5F4FA 40%, #C4B5FD 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--primary-light);
            font-size: 13px;
        }

        .article-meta .meta-date {
            color: var(--text-secondary);
            font-variant-numeric: tabular-nums;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(139, 92, 246, 0.1);
            border: 1px solid rgba(139, 92, 246, 0.2);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 30px;
            transition: all 0.25s;
        }

        .tag:hover {
            background: rgba(139, 92, 246, 0.2);
            border-color: var(--border-hover);
        }

        /* 正文区 */
        .article-main {
            padding: 56px 0 0;
        }

        .article-layout {
            display: flex;
            justify-content: center;
            gap: 48px;
        }

        .article-content-wrap {
            max-width: 760px;
            width: 100%;
            min-width: 0;
        }

        .article-body {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            margin-bottom: 40px;
            font-size: 16px;
            line-height: 1.9;
            color: #E6E4F2;
        }

        .article-body p {
            margin-bottom: 24px;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            border-radius: 2px;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin: 32px 0 14px;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 24px 0 10px;
        }

        .article-body ul {
            margin: 20px 0 24px;
            padding-left: 0;
        }

        .article-body ul li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            color: #C9C6DD;
        }

        .article-body ul li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 12px;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
        }

        .article-body ol {
            margin: 20px 0 24px;
            padding-left: 22px;
            counter-reset: article-ol;
        }

        .article-body ol li {
            position: relative;
            padding-left: 6px;
            margin-bottom: 10px;
            color: #C9C6DD;
            list-style: decimal;
        }

        .article-body blockquote {
            margin: 28px 0;
            padding: 18px 24px;
            background: rgba(139, 92, 246, 0.08);
            border-left: 4px solid var(--primary);
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            font-style: normal;
            line-height: 1.8;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
        }

        .article-body code {
            font-family: "SF Mono", Consolas, monospace;
            background: rgba(139, 92, 246, 0.12);
            color: var(--primary-light);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            word-break: break-all;
        }

        .article-body pre {
            background: #0A0812;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            overflow-x: auto;
            margin: 28px 0;
            line-height: 1.7;
        }

        .article-body pre code {
            background: transparent;
            color: var(--text-main);
            padding: 0;
            font-size: 14px;
            white-space: pre;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
        }

        .article-body table th {
            background: rgba(139, 92, 246, 0.14);
            color: var(--text-main);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border-bottom: 2px solid rgba(139, 92, 246, 0.3);
        }

        .article-body table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            color: #C9C6DD;
        }

        .article-body table tr:hover td {
            background: rgba(139, 92, 246, 0.04);
        }

        .article-body a {
            color: var(--secondary);
            border-bottom: 1px solid rgba(34, 211, 238, 0.3);
            transition: all 0.25s;
        }

        .article-body a:hover {
            color: var(--primary-light);
            border-bottom-color: var(--primary-light);
        }

        .article-body > *:last-child {
            margin-bottom: 0;
        }

        .not-found-box {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            margin-bottom: 40px;
        }

        .not-found-box .nf-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(139, 92, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 24px;
            color: var(--primary-light);
        }

        .not-found-box h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .not-found-box p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 32px;
            border-radius: 10px;
            cursor: pointer;
            box-shadow: var(--glow-primary);
            border: none;
            transition: all 0.25s ease;
        }

        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: var(--glow-primary-hover);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--secondary);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 10px;
            border: 1px solid rgba(34, 211, 238, 0.6);
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            background: rgba(34, 211, 238, 0.1);
            color: #fff;
            border-color: var(--secondary);
            transform: translateY(-2px);
        }

        /* 分享条 */
        .article-share-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 0 6px 8px;
            margin-bottom: 56px;
        }

        .share-left {
            font-size: 14px;
            color: var(--text-muted);
        }

        .share-action-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .icon-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--bg-secondary);
            color: var(--text-secondary);
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s;
        }

        .icon-btn:hover {
            border-color: var(--border-hover);
            color: var(--primary-light);
            background: rgba(139, 92, 246, 0.1);
            transform: translateY(-2px);
        }

        /* 相关推荐 */
        .related-section {
            padding: 0 0 80px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
        }

        .section-head h2 span {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 420px;
            text-align: right;
            line-height: 1.7;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .related-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-secondary);
            position: relative;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }

        .related-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 10, 20, 0.4), transparent 50%);
            pointer-events: none;
        }

        .related-info {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 6px;
        }

        .related-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .related-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.25s;
        }

        .related-card:hover .related-title {
            color: var(--primary-light);
        }

        .related-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 13px;
            color: var(--text-muted);
        }

        .related-bottom time {
            font-variant-numeric: tabular-nums;
        }

        .related-more {
            color: var(--text-muted);
            transition: all 0.25s;
        }

        .related-card:hover .related-more {
            color: var(--primary-light);
        }

        /* CTA */
        .cta-section {
            padding: 0 0 80px;
        }

        .cta-banner {
            position: relative;
            background: linear-gradient(120deg, rgba(139, 92, 246, 0.22), rgba(34, 211, 238, 0.12)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(139, 92, 246, 0.3);
            padding: 70px 48px;
            text-align: center;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 18px;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.35);
            filter: blur(80px);
            bottom: -80px;
            left: 50%;
            transform: translateX(-50%);
            pointer-events: none;
        }

        .cta-banner h2 {
            position: relative;
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            z-index: 1;
        }

        .cta-banner p {
            position: relative;
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            z-index: 1;
        }

        .cta-actions {
            position: relative;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 10px;
            z-index: 1;
        }

        /* 页脚 */
        .site-footer {
            background: #0A0812;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 16px;
            max-width: 320px;
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-muted);
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul a::before {
            content: "›";
            font-size: 16px;
            color: var(--primary-light);
            opacity: 0;
            transform: translateX(-4px);
            transition: all 0.25s;
        }

        .footer-col ul a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-col ul a:hover::before {
            opacity: 1;
            transform: translateX(0);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .footer-links a {
            color: var(--text-muted);
            transition: color 0.25s;
        }

        .footer-links a:hover {
            color: var(--primary-light);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            padding: 20px 24px 28px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

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

        .mobile-menu a {
            padding: 14px 16px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(139, 92, 246, 0.12);
            color: var(--primary-light);
        }

        .mobile-menu .btn-nav {
            margin-top: 12px;
            text-align: center;
            justify-content: center;
            display: flex;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }

            .nav-link {
                font-size: 14px;
            }

            .nav-timer {
                display: none;
            }

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

            .article-title {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .container {
                padding: 0 16px;
            }

            .article-banner {
                padding: 48px 0 36px;
            }

            .article-title {
                font-size: 27px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-body {
                padding: 28px 20px;
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 21px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-body h4 {
                font-size: 16px;
            }

            .article-layout {
                gap: 0;
            }

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .section-desc {
                text-align: left;
            }

            .cta-banner {
                padding: 48px 24px;
            }

            .cta-banner h2 {
                font-size: 24px;
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px 0 28px;
            }

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

            .article-share-row {
                flex-direction: column;
                align-items: flex-start;
            }

            .share-action-group {
                width: 100%;
            }

            .icon-btn {
                flex: 1;
            }

            .breadcrumb .current {
                max-width: 200px;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 23px;
            }

            .logo-text {
                font-size: 17px;
            }

            .article-banner {
                padding: 36px 0 28px;
            }

            .article-body {
                padding: 22px 16px;
            }

            .not-found-box {
                padding: 40px 20px;
            }

            .related-bottom {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #8B5CF6;
            --primary-light: #A78BFA;
            --primary-dark: #7C3AED;
            --accent: #22D3EE;
            --amber: #F59E0B;
            --bg: #0C0A14;
            --surface: #141128;
            --card: #1A1730;
            --card-hover: #201C3D;
            --text: #F5F4FA;
            --muted: #A8A4C0;
            --disabled: #6F6B87;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(139, 92, 246, 0.5);
            --success: #22C55E;
            --danger: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-cta: 0 0 20px rgba(139, 92, 246, 0.35);
            --shadow-cta-hover: 0 0 36px rgba(139, 92, 246, 0.55);
            --container: 1200px;
            --spacer: 80px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            background-image:
                radial-gradient(ellipse 80% 50% at 20% 0%, rgba(139, 92, 246, 0.08) 0%, transparent 100%),
                radial-gradient(ellipse 50% 40% at 100% 100%, rgba(34, 211, 238, 0.05) 0%, transparent 100%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        button,
        input {
            font: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

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

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

        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--muted);
            font-size: 16px;
        }

        .section-header .badge {
            margin-bottom: 16px;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 24px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.2;
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            box-shadow: var(--shadow-cta);
        }

        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-cta-hover);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: none;
        }

        .btn-outline:hover {
            background: rgba(34, 211, 238, 0.1);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 42px;
            font-size: 18px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.02em;
            background: rgba(245, 158, 11, 0.12);
            color: var(--amber);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        .badge-status {
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent);
            border-color: rgba(34, 211, 238, 0.3);
        }

        .badge-primary {
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            border-color: rgba(139, 92, 246, 0.35);
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 10, 20, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-badge {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 0 16px rgba(139, 92, 246, 0.4);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(90deg, rgba(139, 92, 246, 0.25), rgba(124, 58, 237, 0.15));
            border-color: rgba(139, 92, 246, 0.4);
            box-shadow: 0 0 14px rgba(139, 92, 246, 0.15);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-status {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .header-status .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.04);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

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

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

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            padding: 80px 0;
            display: flex;
            align-items: center;
            background:
                linear-gradient(90deg, rgba(12, 10, 20, 0.92) 20%, rgba(12, 10, 20, 0.6) 60%, rgba(12, 10, 20, 0.4)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            top: -180px;
            right: -140px;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.3), transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -120px;
            left: 30%;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero .badge {
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero h1 .highlight {
            background: linear-gradient(90deg, var(--accent), var(--primary-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 900;
        }

        .hero .subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--muted);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 32px;
            color: var(--muted);
            font-size: 14px;
            flex-wrap: wrap;
        }

        .hero-meta .item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-meta .item .num {
            color: var(--accent);
            font-weight: 700;
            font-variant-numeric: tabular-nums;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .card-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            font-size: 24px;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            margin-bottom: 20px;
            border: 1px solid rgba(139, 92, 246, 0.25);
        }

        .card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Grids ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .grid-6 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .grid-3,
            .grid-6 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .grid-3,
            .grid-4,
            .grid-6 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Value Props ===== */
        .value-card .card-icon {
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent);
            border-color: rgba(34, 211, 238, 0.25);
        }

        /* ===== Scenario Cards ===== */
        .scenario-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
            height: 100%;
        }

        .scenario-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .scenario-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .scenario-card:hover::before {
            opacity: 1;
        }

        .scenario-card .step-num {
            font-size: 14px;
            color: var(--primary-light);
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
            font-variant-numeric: tabular-nums;
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .scenario-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== Topic Cards ===== */
        .cover-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .cover-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .cover-card .cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
            background: var(--surface);
        }

        .cover-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .cover-card:hover .cover img {
            transform: scale(1.04);
        }

        .cover-card .cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(12, 10, 20, 0.4));
        }

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

        .cover-card .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .cover-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cover-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .cover-card .meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--disabled);
        }

        .cover-card .meta .update {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Steps ===== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            position: relative;
            padding: 28px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.25s ease;
            height: 100%;
        }

        .step-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }

        .step-item .step-index {
            font-size: 34px;
            font-weight: 900;
            color: transparent;
            -webkit-text-stroke: 1px rgba(139, 92, 246, 0.5);
            margin-bottom: 14px;
            font-variant-numeric: tabular-nums;
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .step-item p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 1024px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .steps-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Data Stats ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 32px 24px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.25s ease;
        }

        .stat-item:hover {
            border-color: var(--border-hover);
            background: var(--card-hover);
        }

        .stat-item .stat-num {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--primary-light);
            font-variant-numeric: tabular-nums;
        }

        .stat-item .stat-label {
            margin-top: 8px;
            color: var(--muted);
            font-size: 15px;
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            transition: background 0.25s ease;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-q-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
            border: 1px solid rgba(139, 92, 246, 0.3);
            transition: all 0.25s ease;
        }

        .faq-item.open .faq-q-icon {
            background: var(--accent);
            color: #0C0A14;
            border-color: var(--accent);
        }

        .faq-toggle {
            margin-left: auto;
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-toggle::before,
        .faq-toggle::after {
            content: "";
            position: absolute;
            width: 14px;
            height: 2px;
            background: var(--muted);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .faq-toggle::after {
            transform: rotate(90deg);
        }

        .faq-item.open .faq-toggle::after {
            transform: rotate(0deg);
        }

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

        .faq-answer-inner {
            padding: 0 22px 24px 70px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
        }

        @media (max-width: 576px) {
            .faq-answer-inner {
                padding: 0 18px 20px 60px;
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            padding: 72px 48px;
            text-align: center;
            background:
                linear-gradient(120deg, rgba(139, 92, 246, 0.25), rgba(34, 211, 238, 0.12)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(12, 10, 20, 0.65);
            border-radius: 24px;
        }

        .cta-banner .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-banner h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-banner p {
            color: var(--muted);
            font-size: 17px;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-banner {
                padding: 48px 24px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

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

        .footer-brand p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
            margin-top: 12px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: var(--muted);
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .footer-col ul a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            color: var(--disabled);
            font-size: 14px;
        }

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

        .footer-links a {
            color: var(--disabled);
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--muted);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive Header ===== */
        @media (max-width: 1024px) {
            .header-status {
                display: none;
            }
        }

        @media (max-width: 900px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: var(--bg);
                border-bottom: 1px solid var(--border);
                padding: 12px 24px 20px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.3s ease;
                z-index: 99;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-link {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 10px;
                text-align: center;
            }
            .header-actions .btn-sm {
                display: none;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding: 60px 0;
                min-height: auto;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero .subtitle {
                font-size: 16px;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .section {
                padding: 48px 0;
            }
            .card {
                padding: 24px;
            }
            .cta-banner .cta-buttons .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #8B5CF6;
            --primary-light: #A78BFA;
            --primary-dark: #7C3AED;
            --accent: #22D3EE;
            --warning: #F59E0B;
            --bg-base: #0C0A14;
            --bg-surface: #141128;
            --bg-card: #1A1730;
            --bg-card-hover: #201C3D;
            --text-main: #F5F4FA;
            --text-sub: #A8A4C0;
            --text-mute: #6F6B87;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(139, 92, 246, 0.5);
            --success: #22C55E;
            --danger: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-cta: 0 0 20px rgba(139, 92, 246, 0.35);
            --shadow-cta-hover: 0 0 36px rgba(139, 92, 246, 0.55);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --trans: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            transition: all var(--trans);
        }

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(12, 10, 20, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--trans);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-badge {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 14px rgba(139, 92, 246, 0.4);
            letter-spacing: -0.5px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, #F5F4FA, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            position: relative;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            transition: color var(--trans), background var(--trans);
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: var(--text-main);
            background: rgba(139, 92, 246, 0.12);
            box-shadow: inset 0 0 0 1px rgba(139, 92, 246, 0.25);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 99px;
            background: var(--primary-light);
            box-shadow: 0 0 8px rgba(139, 92, 246, 0.6);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .countdown-pill {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.25);
            color: var(--warning);
            font-size: 13px;
            padding: 5px 12px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
        }

        .countdown-pill .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--warning);
            box-shadow: 0 0 8px var(--warning);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.85);
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--trans);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            box-shadow: var(--shadow-cta);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-cta-hover);
            transform: scale(1.03);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent);
        }

        .btn-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: scale(1.03);
        }

        .btn-large {
            padding: 16px 40px;
            font-size: 17px;
            border-radius: var(--radius-md);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            color: var(--text-main);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 76px;
            left: 0;
            width: 100%;
            background: rgba(12, 10, 20, 0.97);
            backdrop-filter: blur(24px);
            padding: 24px;
            z-index: 999;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-direction: column;
            gap: 10px;
        }

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

        .mobile-menu .nav-link {
            display: block;
            padding: 14px 16px;
            text-align: center;
            font-size: 16px;
        }

        .mobile-menu .btn {
            margin-top: 8px;
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 160px 0 80px;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(12, 10, 20, 0.95) 10%, rgba(20, 17, 40, 0.85) 55%, rgba(12, 10, 20, 0.7));
            z-index: 1;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.25), transparent 70%);
            z-index: 0;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .banner-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            letter-spacing: 0.3px;
        }

        .badge-warning {
            color: var(--warning);
            background: rgba(245, 158, 11, 0.08);
            border-color: rgba(245, 158, 11, 0.3);
        }

        .badge-primary {
            color: var(--primary-light);
            background: rgba(139, 92, 246, 0.08);
            border-color: rgba(139, 92, 246, 0.3);
        }

        .page-banner h1 {
            font-size: 48px;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: var(--text-main);
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .page-banner h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 900;
        }

        .banner-sub {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 640px;
            margin-bottom: 36px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .scroll-hint {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-mute);
            font-size: 13px;
            letter-spacing: 2px;
        }

        .scroll-hint span {
            width: 1px;
            height: 40px;
            background: linear-gradient(to bottom, var(--text-mute), transparent);
            display: block;
        }

        /* ===== Section base ===== */
        .section {
            padding: 100px 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 64px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 6px 18px;
            border-radius: 999px;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }

        .section-header .section-tag.purple {
            color: var(--primary-light);
            background: rgba(139, 92, 246, 0.08);
            border-color: rgba(139, 92, 246, 0.3);
        }

        .section-header .section-tag.gold {
            color: var(--warning);
            background: rgba(245, 158, 11, 0.08);
            border-color: rgba(245, 158, 11, 0.25);
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-header h2 span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-header .section-desc {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg-surface);
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
        }

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

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 36px 28px;
            position: relative;
            transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
            overflow: hidden;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .step-number {
            font-size: 44px;
            font-weight: 900;
            color: transparent;
            -webkit-text-stroke: 1.5px rgba(139, 92, 246, 0.5);
            line-height: 1;
            margin-bottom: 20px;
            font-variant-numeric: tabular-nums;
            transition: color var(--trans), -webkit-text-stroke var(--trans);
        }

        .step-card:hover .step-number {
            color: rgba(139, 92, 246, 0.15);
            -webkit-text-stroke: 1.5px var(--primary-light);
        }

        .step-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .step-card p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
        }

        .step-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 14px;
            color: var(--accent);
            font-weight: 500;
        }

        .step-link:hover {
            color: var(--primary-light);
        }

        /* ===== Topic cards ===== */
        .topics-section {
            background: var(--bg-base);
        }

        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .topic-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-surface);
        }

        .topic-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .topic-card:hover .card-img img {
            transform: scale(1.06);
        }

        .topic-card .card-img .img-fallback {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(34, 211, 238, 0.1));
            color: var(--text-mute);
            font-size: 14px;
        }

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

        .card-body .card-tag {
            align-self: flex-start;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.2);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
            line-height: 1.5;
        }

        .card-body p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-mute);
        }

        .card-meta .arrow {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--trans), color var(--trans);
            color: var(--text-mute);
        }

        .topic-card:hover .card-meta .arrow {
            background: rgba(139, 92, 246, 0.2);
            color: var(--primary-light);
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-surface);
            position: relative;
            overflow: hidden;
        }

        .features-section::after {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 70%);
            pointer-events: none;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .feature-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--trans);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 900;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(34, 211, 238, 0.1));
            border: 1px solid rgba(139, 92, 246, 0.2);
            color: var(--primary-light);
            transition: all var(--trans);
        }

        .feature-item:hover .feature-icon {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(34, 211, 238, 0.15));
            box-shadow: 0 0 24px rgba(139, 92, 246, 0.3);
        }

        .feature-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .feature-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-base);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 48px 32px;
        }

        .stat-item {
            text-align: center;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-number {
            font-size: 44px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 15px;
            color: var(--text-sub);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-base);
            padding: 100px 0;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 0.8fr 1.6fr;
            gap: 48px;
            align-items: start;
        }

        .faq-side {
            position: sticky;
            top: 120px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 36px;
            overflow: hidden;
        }

        .faq-side::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .faq-side h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

        .faq-side .faq-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--bg-surface);
        }

        .faq-side .faq-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: border-color var(--trans), box-shadow var(--trans);
        }

        .faq-item.active {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            cursor: pointer;
            user-select: none;
            min-height: 56px;
        }

        .faq-q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.1);
            border: 1px solid rgba(139, 92, 246, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-light);
            flex-shrink: 0;
            transition: all var(--trans);
        }

        .faq-item.active .faq-q-icon {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(34, 211, 238, 0.4);
            color: var(--accent);
        }

        .faq-question .faq-text {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
        }

        .faq-toggle {
            width: 24px;
            height: 24px;
            position: relative;
            flex-shrink: 0;
        }

        .faq-toggle::before,
        .faq-toggle::after {
            content: "";
            position: absolute;
            background: var(--text-sub);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .faq-toggle::before {
            width: 14px;
            height: 2px;
            top: 11px;
            left: 5px;
        }

        .faq-toggle::after {
            width: 2px;
            height: 14px;
            top: 5px;
            left: 11px;
        }

        .faq-item.active .faq-toggle::after {
            transform: scaleY(0);
        }

        .faq-item.active .faq-toggle::before {
            background: var(--accent);
        }

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

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            padding: 0 20px 20px 62px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA Banner ===== */
        .cta-section {
            background: var(--bg-surface);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(34, 211, 238, 0.05));
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary-light), var(--accent), transparent);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            color: var(--text-sub);
            font-size: 17px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A0813;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 80px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 60px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

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

        .footer-brand p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            max-width: 320px;
            margin-top: 14px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            border-radius: 2px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            color: var(--text-sub);
            font-size: 15px;
            transition: color var(--trans), padding-left var(--trans);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 32px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            color: var(--text-mute);
            font-size: 14px;
        }

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

        .footer-links a {
            color: var(--text-mute);
            font-size: 14px;
            transition: color var(--trans);
        }

        .footer-links a:hover {
            color: var(--text-main);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                padding: 40px 24px;
            }

            .stat-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                padding-bottom: 24px;
                margin-bottom: 24px;
            }

            .stat-item:nth-last-child(-n+2) {
                border-bottom: none;
                padding-bottom: 0;
                margin-bottom: 0;
            }

            .faq-layout {
                grid-template-columns: 1fr;
            }

            .faq-side {
                position: static;
            }

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

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .site-header .container {
                height: 68px;
            }

            .main-nav,
            .header-right {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .page-banner {
                padding: 120px 0 60px;
            }

            .page-banner h1 {
                font-size: 30px;
                line-height: 1.3;
            }

            .banner-sub {
                font-size: 16px;
            }

            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .banner-actions .btn {
                width: 100%;
            }

            .scroll-hint {
                display: none;
            }

            .section {
                padding: 56px 0;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .steps-grid,
            .topic-grid,
            .features-grid,
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                padding: 32px 20px;
            }

            .stat-item {
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                padding-bottom: 20px;
                margin-bottom: 20px;
            }

            .stat-item:last-child {
                border-bottom: none;
                padding-bottom: 0;
                margin-bottom: 0;
            }

            .faq-layout {
                gap: 32px;
            }

            .faq-side {
                padding: 24px;
            }

            .faq-answer p {
                padding: 0 16px 18px 16px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .cta-content h2 {
                font-size: 26px;
            }

            .cta-actions {
                flex-direction: column;
            }

            .cta-actions .btn {
                width: 100%;
            }

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

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

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

        @media (max-width: 480px) {
            .logo-text {
                font-size: 17px;
            }

            .countdown-pill {
                display: none;
            }

            .step-card {
                padding: 28px 20px;
            }

            .topic-card .card-body {
                padding: 20px;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category3 */
:root {
            --primary: #8B5CF6;
            --primary-light: #A78BFA;
            --primary-dark: #7C3AED;
            --accent: #22D3EE;
            --warning: #F59E0B;
            --bg-base: #0C0A14;
            --bg-surface: #141128;
            --bg-card: #1A1730;
            --bg-hover: #201C3D;
            --text-main: #F5F4FA;
            --text-sub: #A8A4C0;
            --text-mute: #6F6B87;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(139, 92, 246, 0.5);
            --success: #22C55E;
            --error: #EF4444;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.35);
            --container-max: 1200px;
            --space-section: 80px;
            --space-section-sm: 48px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            background: var(--bg-base);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space-section) 0;
            position: relative;
        }
        .section-sm {
            padding: var(--space-section-sm) 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 16px;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(139, 92, 246, 0.15);
            border: 1px solid rgba(139, 92, 246, 0.25);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(12, 10, 20, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            font-weight: 900;
            font-size: 15px;
            letter-spacing: -0.5px;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--text-main);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 8px;
            transition: color 0.25s ease, background 0.25s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
            background: rgba(139, 92, 246, 0.08);
        }
        .nav-link.active {
            color: var(--primary-light);
            background: rgba(139, 92, 246, 0.12);
            font-weight: 600;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--warning);
            background: rgba(245, 158, 11, 0.12);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 500;
        }
        .header-status .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--warning);
            animation: pulse 1.6s ease infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: 0 0 36px rgba(139, 92, 246, 0.55);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            background: transparent;
            color: var(--accent);
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            border: 1px solid var(--accent);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            transform: scale(1.03);
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--bg-surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            z-index: 999;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 14px 12px;
            font-size: 16px;
            border-bottom: 1px solid var(--border);
            border-radius: 0;
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active {
            background: rgba(139, 92, 246, 0.12);
        }
        .mobile-menu .header-cta {
            margin-top: 16px;
            flex-direction: column;
            gap: 10px;
        }
        .mobile-menu .header-cta .btn-primary,
        .mobile-menu .header-cta .btn-secondary {
            width: 100%;
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            min-height: 640px;
            display: flex;
            align-items: center;
            background: linear-gradient(90deg, rgba(12, 10, 20, 0.92) 0%, rgba(12, 10, 20, 0.7) 60%, rgba(12, 10, 20, 0.5) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -160px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.25), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 620px;
            padding: 80px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--warning);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero h1 .highlight {
            color: var(--primary-light);
            font-weight: 900;
            text-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .hero-meta-item {
            text-align: left;
        }
        .hero-meta-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .hero-meta-item .label {
            font-size: 13px;
            color: var(--text-mute);
        }
        .scroll-hint {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 13px;
            color: var(--text-mute);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            z-index: 2;
        }
        .scroll-hint i {
            font-size: 14px;
            animation: bounce 1.8s ease infinite;
        }
        @keyframes bounce {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(6px);
            }
        }
        /* ===== Featured Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .feature-card:hover {
            background: var(--bg-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(139, 92, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--primary-light);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }
        .feature-num {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-mute);
            transition: color 0.25s ease;
        }
        .feature-card:hover .feature-num {
            color: var(--primary-light);
        }
        /* ===== Tournament Types ===== */
        .types-section {
            background: var(--bg-surface);
        }
        .types-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .type-card {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.25s ease;
        }
        .type-card:hover {
            background: var(--bg-hover);
            border-color: var(--border-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .type-cover {
            flex-shrink: 0;
            width: 160px;
            height: 120px;
            border-radius: 12px;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(34, 211, 238, 0.1));
        }
        .type-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .type-card:hover .type-cover img {
            transform: scale(1.05);
        }
        .type-info {
            flex: 1;
        }
        .type-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent);
            margin-bottom: 10px;
        }
        .type-info h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .type-info p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }
        /* ===== Schedule Timeline ===== */
        .schedule-list {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }
        .schedule-list::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 1px;
            background: var(--border);
        }
        .schedule-item {
            display: flex;
            gap: 28px;
            padding: 20px 0;
            position: relative;
        }
        .schedule-time {
            width: 80px;
            flex-shrink: 0;
            text-align: right;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            padding-top: 6px;
        }
        .schedule-dot {
            position: relative;
            width: 48px;
            flex-shrink: 0;
            display: flex;
            justify-content: center;
        }
        .schedule-dot::before {
            content: '';
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-base);
            box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.3);
            position: relative;
            z-index: 1;
            margin-top: 10px;
        }
        .schedule-body {
            flex: 1;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 18px 22px;
            transition: all 0.25s ease;
        }
        .schedule-body:hover {
            border-color: var(--border-hover);
            background: var(--bg-hover);
        }
        .schedule-body .schedule-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .schedule-body .schedule-desc {
            font-size: 14px;
            color: var(--text-sub);
        }
        .schedule-status {
            display: inline-block;
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            margin-left: 10px;
            font-weight: 500;
            vertical-align: middle;
        }
        .schedule-status.hot {
            background: rgba(245, 158, 11, 0.15);
            color: var(--warning);
        }
        .schedule-status.new {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent);
        }
        /* ===== Process Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.25s ease;
        }
        .process-step:hover {
            background: var(--bg-hover);
            transform: translateY(-4px);
            border-color: var(--border-hover);
        }
        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 14px rgba(139, 92, 246, 0.3);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }
        /* ===== CTA Banner ===== */
        .cta-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(34, 211, 238, 0.1)), var(--bg-surface);
            border-radius: 20px;
            padding: 60px 48px;
            text-align: center;
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.3), transparent 70%);
            border-radius: 50%;
        }
        .cta-banner h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-banner p {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 28px;
            position: relative;
        }
        .cta-banner .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .faq-item.open {
            border-color: rgba(139, 92, 246, 0.4);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: transparent;
            cursor: pointer;
            text-align: left;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 500;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-q-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 700;
            margin-right: 14px;
            flex-shrink: 0;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-mute);
            transition: transform 0.3s ease, color 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 22px 20px;
            border-top-color: var(--border);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-sub);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-mute);
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-mute);
            margin-left: 20px;
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--text-sub);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 991px) {
            .main-nav {
                display: none;
            }
            .header-cta .header-status {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .hero {
                min-height: 0;
                padding: 60px 0;
            }
            .hero-content {
                padding: 40px 0;
                max-width: 100%;
            }
            .hero h1 {
                font-size: 36px;
            }
            .types-grid {
                grid-template-columns: 1fr;
            }
            .type-cover {
                width: 140px;
                height: 105px;
            }
            .cta-banner {
                padding: 40px 24px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .hero {
                padding: 48px 0;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .hero-meta {
                flex-direction: column;
                gap: 12px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .types-grid {
                grid-template-columns: 1fr;
            }
            .type-card {
                flex-direction: column;
                gap: 16px;
            }
            .type-cover {
                width: 100%;
                height: 180px;
            }
            .schedule-list::before {
                left: 14px;
            }
            .schedule-item {
                gap: 12px;
            }
            .schedule-time {
                width: 60px;
                font-size: 13px;
            }
            .schedule-dot {
                width: 28px;
            }
            .schedule-body {
                padding: 14px 16px;
            }
            .schedule-body .schedule-desc {
                font-size: 13px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .cta-banner .btn-group {
                flex-direction: column;
            }
            .cta-banner .btn-group .btn-primary,
            .cta-banner .btn-group .btn-secondary {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links a {
                margin: 0 10px;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 17px;
            }
            .logo-badge {
                width: 34px;
                height: 34px;
                font-size: 13px;
            }
            .header-inner {
                height: 64px;
            }
            .mobile-menu {
                top: 64px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 11px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #8B5CF6;
            --primary-light: #A78BFA;
            --primary-dark: #7C3AED;
            --accent: #22D3EE;
            --warn: #F59E0B;
            --bg: #0C0A14;
            --surface: #141128;
            --card: #1A1730;
            --card-hover: #201C3D;
            --text: #F5F4FA;
            --text-secondary: #A8A4C0;
            --text-muted: #6F6B87;
            --border: rgba(255,255,255,0.08);
            --border-hover: rgba(139,92,246,0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.3);
            --shadow-hover: 0 10px 30px rgba(0,0,0,0.45);
            --shadow-cta: 0 0 20px rgba(139,92,246,0.35);
            --transition: 0.25s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 10, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-badge {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            font-weight: 900;
            font-size: 14px;
            letter-spacing: -0.5px;
            color: #fff;
            box-shadow: var(--shadow-cta);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, var(--primary-light), #c4b5fd);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .main-nav {
            display: flex;
            gap: 4px;
            align-items: center;
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(139, 92, 246, 0.12);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .nav-link.active {
            color: #fff;
            background: rgba(139, 92, 246, 0.2);
            box-shadow: inset 0 0 0 1px rgba(139, 92, 246, 0.4);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .countdown {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border: 1px solid rgba(245, 158, 11, 0.3);
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.08);
            white-space: nowrap;
        }
        .countdown-label {
            font-size: 12px;
            color: var(--warn);
        }
        .countdown-value {
            font-size: 14px;
            font-weight: 700;
            color: var(--warn);
            font-variant-numeric: tabular-nums;
            letter-spacing: 1px;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            font-size: 20px;
            color: var(--text);
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            background: rgba(139, 92, 246, 0.12);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: 0 0 36px rgba(139, 92, 246, 0.55);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: rgba(34, 211, 238, 0.1);
            border-color: var(--accent);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 8px;
        }
        .btn-lg {
            padding: 16px 42px;
            font-size: 16px;
            border-radius: 12px;
        }
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 90px 0;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(12, 10, 20, 0.95) 20%, rgba(12, 10, 20, 0.7) 60%, rgba(12, 10, 20, 0.4) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            right: -100px;
            top: 50%;
            transform: translateY(-50%);
            background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: var(--warn);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 22px;
            letter-spacing: 1px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .hero h1 .highlight {
            color: var(--primary-light);
            text-shadow: 0 0 30px rgba(139, 92, 246, 0.3);
        }
        .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 38px;
            flex-wrap: wrap;
        }
        .hero-stat strong {
            display: block;
            font-size: 30px;
            font-weight: 800;
            color: var(--primary-light);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .hero-stat span {
            font-size: 13px;
            color: var(--text-muted);
        }
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 54px;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 999px;
            background: rgba(139, 92, 246, 0.12);
            border: 1px solid rgba(139, 92, 246, 0.3);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .benefit-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }
        .benefit-card:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .benefit-card .card-image {
            position: relative;
            aspect-ratio: 4 / 3;
            background: var(--surface);
            overflow: hidden;
        }
        .benefit-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .benefit-card:hover .card-image img {
            transform: scale(1.05);
        }
        .benefit-card .card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 10, 20, 0.65), transparent 45%);
        }
        .benefit-card .card-body {
            padding: 24px;
            position: relative;
        }
        .benefit-card .card-flag {
            position: absolute;
            top: -14px;
            left: 20px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
        }
        .benefit-card .card-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
            margin-top: 6px;
        }
        .benefit-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            padding: 3px 10px;
            border-radius: 999px;
        }
        .card-arrow {
            font-size: 18px;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .benefit-card:hover .card-arrow {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .steps-section {
            position: relative;
            overflow: hidden;
        }
        .steps-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            left: -200px;
            bottom: -200px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .step-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            font-size: 32px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 14px;
            font-variant-numeric: tabular-nums;
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .rank-section {
            position: relative;
        }
        .rank-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 22px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 26px;
            transition: all var(--transition);
        }
        .rank-item:hover {
            background: var(--card-hover);
            border-color: var(--border-hover);
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }
        .rank-num {
            font-size: 36px;
            font-weight: 900;
            color: var(--text-muted);
            transition: all var(--transition);
            font-variant-numeric: tabular-nums;
            min-width: 70px;
            line-height: 1;
        }
        .rank-item:hover .rank-num {
            color: var(--primary-light);
            text-shadow: 0 0 24px rgba(139, 92, 246, 0.4);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .rank-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rank-meta {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
            flex-shrink: 0;
        }
        .rank-tag {
            font-size: 12px;
            color: var(--warn);
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.25);
            padding: 2px 10px;
            border-radius: 999px;
        }
        .rank-link {
            font-size: 14px;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .rank-link:hover {
            color: var(--primary-light);
        }
        .faq-section {
            overflow: hidden;
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 48px;
            align-items: center;
        }
        .faq-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            background: var(--surface);
        }
        .faq-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .faq-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 10, 20, 0.45), transparent 60%);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item.active {
            border-color: rgba(34, 211, 238, 0.35);
            background: var(--card-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            cursor: pointer;
            min-height: 58px;
            user-select: none;
        }
        .faq-q-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(139, 92, 246, 0.15);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-item.active .faq-q-icon {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent);
        }
        .faq-question-text {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
        }
        .faq-toggle {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            position: relative;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.06);
        }
        .faq-toggle::before,
        .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: all 0.3s ease;
            top: 50%;
            left: 50%;
        }
        .faq-toggle::before {
            width: 12px;
            height: 2px;
            transform: translate(-50%, -50%);
        }
        .faq-toggle::after {
            width: 2px;
            height: 12px;
            transform: translate(-50%, -50%);
        }
        .faq-item.active .faq-toggle::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 20px 64px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-banner {
            position: relative;
            padding: 90px 0;
            text-align: center;
            overflow: hidden;
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat fixed;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 10, 20, 0.9), rgba(20, 17, 40, 0.75));
            z-index: 1;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, transparent 70%);
            z-index: 1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 18px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 36px;
            }
            .benefit-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-layout {
                grid-template-columns: 1fr;
            }
            .faq-visual {
                min-height: 240px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .site-header .header-inner {
                height: 64px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(12, 10, 20, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 16px 30px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                transform: translateY(-20px);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s ease;
                z-index: 99;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav .nav-link {
                width: 100%;
                text-align: center;
                font-size: 15px;
                padding: 12px;
            }
            .nav-toggle {
                display: flex;
            }
            .countdown {
                display: none;
            }
            .hero {
                min-height: auto;
                padding: 70px 0;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat strong {
                font-size: 24px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .rank-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 18px;
            }
            .rank-num {
                font-size: 28px;
                min-width: 0;
            }
            .rank-meta {
                flex-direction: row;
                align-items: center;
                width: 100%;
                justify-content: space-between;
            }
            .faq-layout {
                gap: 24px;
            }
            .faq-answer-inner {
                padding-left: 20px;
                padding-top: 4px;
            }
            .cta-banner {
                padding: 60px 0;
                background-attachment: scroll;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn {
                font-size: 14px;
                padding: 13px 24px;
            }
            .benefit-card .card-body {
                padding: 20px;
            }
            .step-item {
                padding: 22px 18px;
            }
        }