/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --bs-primary: #4A8FE4;
            --bs-secondary: #1C3D6B;
            --bs-accent: #F5A623;
            --bs-success: #34C759;
            --bs-danger: #FF3B30;
            --bs-bg: #F8FAFC;
            --bs-card-bg: #FFFFFF;
            --bs-text: #1C3D6B;
            --bs-text-muted: #6B7A8F;
            --bs-border-radius: 16px;
            --bs-border-radius-sm: 12px;
            --bs-border-radius-lg: 24px;
            --bs-shadow: 0 4px 20px rgba(26, 61, 92, 0.08);
            --bs-shadow-hover: 0 8px 32px rgba(26, 61, 92, 0.15);
            --bs-transition: 0.3s ease;
            --bs-font-sans: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-font-sans);
            color: var(--bs-text);
            background-color: var(--bs-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--bs-primary);
            text-decoration: none;
            transition: color var(--bs-transition);
        }
        a:hover {
            color: var(--bs-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--bs-text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--bs-text-muted);
            margin-bottom: 40px;
            font-weight: 400;
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: var(--bs-border-radius-lg);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--bs-transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom {
            background: var(--bs-accent);
            color: #fff;
        }
        .btn-primary-custom:hover {
            background: #E0951A;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.35);
        }
        .btn-primary-custom:active {
            background: #C87E12;
            transform: translateY(0);
        }
        .btn-secondary-custom {
            background: var(--bs-primary);
            color: #fff;
        }
        .btn-secondary-custom:hover {
            background: #3a7ad0;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(74, 143, 228, 0.35);
        }
        .btn-secondary-custom:active {
            background: #2e6bb8;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--bs-primary);
            border: 2px solid var(--bs-primary);
        }
        .btn-outline-custom:hover {
            background: var(--bs-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-custom:active {
            background: #2e6bb8;
            border-color: #2e6bb8;
        }
        .btn-white-custom {
            background: #fff;
            color: var(--bs-primary);
        }
        .btn-white-custom:hover {
            background: #f0f4ff;
            color: var(--bs-primary);
            transform: scale(1.05);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 18px;
        }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: #E8F0FE;
            color: var(--bs-text);
            line-height: 1.6;
        }
        .badge-hot {
            background: var(--bs-accent);
            color: #fff;
        }
        .badge-primary {
            background: var(--bs-primary);
            color: #fff;
        }

        /* ===== Navigation (Double Layer) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #fff;
            box-shadow: 0 2px 16px rgba(26, 61, 92, 0.06);
        }
        .nav-brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            background: #fff;
            border-bottom: 1px solid #eef2f6;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--bs-text);
            letter-spacing: -0.5px;
        }
        .nav-brand i {
            font-size: 28px;
            color: var(--bs-accent);
        }
        .nav-brand:hover {
            color: var(--bs-text);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            border-radius: var(--bs-border-radius-lg);
            border: 1px solid #e0e6ed;
            padding: 8px 16px 8px 40px;
            font-size: 14px;
            background: var(--bs-bg);
            width: 220px;
            transition: all var(--bs-transition);
            font-family: var(--bs-font-sans);
        }
        .nav-search input:focus {
            outline: none;
            border-color: var(--bs-primary);
            box-shadow: 0 0 0 3px rgba(74, 143, 228, 0.15);
            width: 260px;
        }
        .nav-search i {
            position: absolute;
            left: 14px;
            color: var(--bs-text-muted);
            font-size: 14px;
        }
        .nav-search-mobile-btn {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--bs-text);
            cursor: pointer;
            padding: 4px 8px;
        }
        .nav-channel-bar {
            background: #fff;
            border-bottom: 1px solid #eef2f6;
            padding: 0 20px;
        }
        .nav-channel-list {
            display: flex;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 8px 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-channel-list::-webkit-scrollbar {
            display: none;
        }
        .nav-channel-list li {
            flex-shrink: 0;
        }
        .nav-channel-list a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--bs-text);
            background: transparent;
            transition: all var(--bs-transition);
            text-decoration: none;
        }
        .nav-channel-list a:hover {
            background: #eef2f6;
            color: var(--bs-primary);
        }
        .nav-channel-list a.active {
            background: var(--bs-primary);
            color: #fff;
            font-weight: 600;
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #E8F0FE 0%, #FFFFFF 70%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(74, 143, 228, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .hero-text {
            flex: 1;
        }
        .hero-text h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--bs-text);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-text h1 span {
            color: var(--bs-primary);
        }
        .hero-text .hero-sub {
            font-size: 20px;
            color: var(--bs-text-muted);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            flex: 0 0 320px;
            position: relative;
        }
        .hero-cover {
            width: 100%;
            aspect-ratio: 9 / 16;
            border-radius: var(--bs-border-radius);
            background: linear-gradient(145deg, #d0e0f0, #b8cce0);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 12px 40px rgba(26, 61, 92, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .hero-cover .play-btn {
            width: 72px;
            height: 72px;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--bs-primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            transition: all var(--bs-transition);
            cursor: pointer;
            border: none;
        }
        .hero-cover .play-btn:hover {
            transform: scale(1.08);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }
        .hero-cover .play-pulse {
            position: absolute;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.4);
            animation: pulse-ring 2s infinite;
        }
        @keyframes pulse-ring {
            0% {
                transform: scale(0.9);
                opacity: 1;
            }
            100% {
                transform: scale(1.6);
                opacity: 0;
            }
        }

        /* ===== Trending Cards (爆款片段) ===== */
        .trending-section {
            padding: 60px 0 80px;
        }
        .trending-card {
            background: var(--bs-card-bg);
            border-radius: var(--bs-border-radius);
            box-shadow: var(--bs-shadow);
            overflow: hidden;
            transition: all var(--bs-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .trending-card:hover {
            box-shadow: var(--bs-shadow-hover);
            transform: translateY(-4px);
        }
        .trending-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .trending-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .trending-card:hover .card-img img {
            transform: scale(1.05);
        }
        .trending-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--bs-accent);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .trending-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .trending-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .trending-card .card-meta {
            font-size: 13px;
            color: var(--bs-text-muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .trending-card .card-meta i {
            color: var(--bs-accent);
        }
        .trending-card .card-footer-link {
            margin-top: auto;
            font-size: 14px;
            font-weight: 600;
            color: var(--bs-primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--bs-transition);
        }
        .trending-card .card-footer-link:hover {
            gap: 12px;
            color: var(--bs-accent);
        }

        /* =====种草清单 Grid ===== */
        .list-section {
            padding: 80px 0;
            background: var(--bs-bg);
        }
        .list-card {
            background: var(--bs-card-bg);
            border-radius: var(--bs-border-radius);
            box-shadow: var(--bs-shadow);
            overflow: hidden;
            transition: all var(--bs-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .list-card:hover {
            box-shadow: var(--bs-shadow-hover);
            transform: translateY(-3px);
        }
        .list-card .card-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }
        .list-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .list-card:hover .card-img img {
            transform: scale(1.06);
        }
        .list-card .card-body {
            padding: 20px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .list-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .list-card .card-desc {
            font-size: 14px;
            color: var(--bs-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .list-card .card-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--bs-accent);
            margin-bottom: 10px;
        }
        .list-card .card-rating span {
            color: var(--bs-text-muted);
            margin-left: 4px;
            font-weight: 500;
        }
        .list-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 14px;
        }
        .list-card .card-tags .tag {
            font-size: 11px;
            padding: 3px 12px;
            border-radius: 12px;
            background: #E8F0FE;
            color: var(--bs-text);
            font-weight: 500;
        }
        .list-card .card-action {
            margin-top: auto;
        }
        .list-card .card-action .btn {
            padding: 8px 20px;
            font-size: 13px;
        }

        /* ===== Reviews / 口碑条 ===== */
        .reviews-section {
            padding: 60px 0;
            background: #fff;
        }
        .reviews-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 12px 4px 20px;
            cursor: grab;
        }
        .reviews-scroll::-webkit-scrollbar {
            display: none;
        }
        .review-item {
            flex: 0 0 320px;
            background: var(--bs-bg);
            border-radius: var(--bs-border-radius-sm);
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 2px 8px rgba(26, 61, 92, 0.04);
            transition: box-shadow var(--bs-transition);
        }
        .review-item:hover {
            box-shadow: 0 4px 16px rgba(26, 61, 92, 0.1);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bs-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .review-user {
            font-weight: 600;
            font-size: 14px;
            color: var(--bs-text);
        }
        .review-stars {
            color: var(--bs-accent);
            font-size: 13px;
            letter-spacing: 1px;
        }
        .review-text {
            font-size: 14px;
            color: var(--bs-text-muted);
            line-height: 1.5;
        }
        .review-time {
            font-size: 12px;
            color: #a0b0c0;
            align-self: flex-end;
        }
        .reviews-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--bs-text-muted);
            font-size: 16px;
            background: var(--bs-bg);
            border-radius: var(--bs-border-radius-sm);
            width: 100%;
        }
        .reviews-empty i {
            font-size: 40px;
            color: #d0d8e0;
            margin-bottom: 12px;
            display: block;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--bs-primary) 0%, #3a7ad0 50%, #2e6bb8 100%);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn {
            font-size: 18px;
            padding: 16px 48px;
        }

        /* ===== News / CMS List ===== */
        .news-section {
            padding: 80px 0;
            background: var(--bs-bg);
        }
        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bs-card-bg);
            border-radius: var(--bs-border-radius-sm);
            padding: 16px;
            box-shadow: var(--bs-shadow);
            transition: all var(--bs-transition);
            margin-bottom: 20px;
        }
        .news-card:hover {
            box-shadow: var(--bs-shadow-hover);
            transform: translateX(4px);
        }
        .news-card .news-img {
            flex: 0 0 160px;
            aspect-ratio: 4 / 3;
            border-radius: var(--bs-border-radius-sm);
            overflow: hidden;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-card .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-card .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--bs-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-card .news-title a {
            color: inherit;
        }
        .news-card .news-title a:hover {
            color: var(--bs-primary);
        }
        .news-card .news-desc {
            font-size: 14px;
            color: var(--bs-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--bs-text-muted);
        }
        .news-card .news-meta .badge-custom {
            font-size: 11px;
            padding: 2px 12px;
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--bs-bg);
            border-radius: var(--bs-border-radius);
            color: var(--bs-text-muted);
        }
        .news-empty i {
            font-size: 48px;
            color: #d0d8e0;
            margin-bottom: 16px;
            display: block;
        }
        .news-empty p {
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bs-secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand i {
            color: var(--bs-accent);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color var(--bs-transition);
        }
        .footer-col ul li a:hover {
            color: var(--bs-accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 18px;
            transition: all var(--bs-transition);
        }
        .footer-social a:hover {
            background: var(--bs-accent);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px 20px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--bs-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            .hero-text .hero-sub {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 240px;
                width: 200px;
                margin: 0 auto;
            }
            .hero-text h1 {
                font-size: 36px;
            }
            .section-title {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-img {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 9;
            }
            .nav-search input {
                width: 160px;
            }
            .nav-search input:focus {
                width: 200px;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .hero-section {
                padding: 60px 0 48px;
            }
            .hero-text h1 {
                font-size: 28px;
            }
            .hero-text .hero-sub {
                font-size: 16px;
            }
            .hero-visual {
                flex: 0 0 200px;
                width: 160px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 16px;
                margin-bottom: 28px;
            }
            .trending-section {
                padding: 40px 0 48px;
            }
            .list-section {
                padding: 48px 0;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .news-section {
                padding: 48px 0;
            }
            .nav-brand {
                font-size: 20px;
            }
            .nav-brand i {
                font-size: 24px;
            }
            .nav-search {
                display: none;
            }
            .nav-search-mobile-btn {
                display: block;
            }
            .nav-search.mobile-open {
                display: block;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                padding: 12px 20px;
                background: #fff;
                border-bottom: 1px solid #eef2f6;
                z-index: 10;
            }
            .nav-search.mobile-open input {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 24px;
            }
            .footer-desc {
                max-width: 100%;
                margin: 0 auto;
            }
            .footer-social {
                justify-content: center;
            }
            .review-item {
                flex: 0 0 280px;
            }
            .news-card .news-title {
                font-size: 16px;
            }
        }
        @media (max-width: 576px) {
            .hero-text h1 {
                font-size: 24px;
            }
            .hero-text .hero-sub {
                font-size: 15px;
            }
            .hero-visual {
                flex: 0 0 160px;
                width: 130px;
            }
            .hero-actions .btn {
                font-size: 14px;
                padding: 10px 22px;
            }
            .btn-lg {
                font-size: 16px;
                padding: 14px 32px;
            }
            .trending-card .card-body {
                padding: 16px 18px 20px;
            }
            .list-card .card-body {
                padding: 16px 16px 18px;
            }
            .news-card {
                padding: 12px;
            }
            .nav-channel-list a {
                padding: 5px 14px;
                font-size: 13px;
            }
            .nav-brand-bar {
                padding: 10px 16px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --bs-primary: #4A8FE4;
            --bs-primary-rgb: 74, 143, 228;
            --bs-secondary: #F5A623;
            --bs-secondary-rgb: 245, 166, 35;
            --bs-dark: #1C3D6B;
            --bs-dark-rgb: 28, 61, 107;
            --bs-light-bg: #F8FAFC;
            --bs-card-bg: #FFFFFF;
            --bs-body-bg: #F8FAFC;
            --bs-body-color: #1C3D6B;
            --bs-muted: #6B7A8F;
            --bs-border-radius: 16px;
            --bs-border-radius-sm: 12px;
            --bs-border-radius-pill: 24px;
            --bs-box-shadow: 0 4px 20px rgba(26, 61, 92, 0.08);
            --bs-box-shadow-hover: 0 8px 32px rgba(26, 61, 92, 0.15);
            --bs-transition: 0.3s ease;
            --bs-font-sans-serif: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            --bs-body-font-size: 16px;
            --bs-body-line-height: 1.7;
            --bs-heading-line-height: 1.3;
            --bs-spacing-section: 80px;
            --bs-spacing-section-mobile: 48px;
            --bs-max-width-article: 760px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bs-font-sans-serif);
            font-size: var(--bs-body-font-size);
            line-height: var(--bs-body-line-height);
            color: var(--bs-body-color);
            background: var(--bs-body-bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--bs-primary);
            text-decoration: none;
            transition: color var(--bs-transition);
        }
        a:hover {
            color: var(--bs-secondary);
        }
        a:focus-visible {
            outline: 2px solid var(--bs-secondary);
            outline-offset: 2px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        /* ========== Container ========== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== Header / 双层导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #FFFFFF;
            box-shadow: 0 2px 12px rgba(26, 61, 92, 0.06);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }

        .nav-brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            background: #FFFFFF;
            gap: 16px;
            flex-wrap: nowrap;
        }
        @media (max-width: 768px) {
            .nav-brand-bar {
                padding: 10px 16px;
            }
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--bs-dark);
            text-decoration: none;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-brand i {
            color: var(--bs-secondary);
            font-size: 26px;
        }
        .nav-brand:hover {
            color: var(--bs-dark);
            opacity: 0.9;
        }
        @media (max-width: 420px) {
            .nav-brand {
                font-size: 18px;
            }
            .nav-brand i {
                font-size: 22px;
            }
        }

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

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bs-light-bg);
            border-radius: var(--bs-border-radius-pill);
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid #E8ECF1;
            transition: border-color var(--bs-transition), box-shadow var(--bs-transition);
            min-width: 200px;
        }
        .nav-search:focus-within {
            border-color: var(--bs-primary);
            box-shadow: 0 0 0 3px rgba(74, 143, 228, 0.15);
        }
        .nav-search i {
            color: var(--bs-muted);
            font-size: 14px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--bs-body-color);
            width: 100%;
            padding: 4px 0;
        }
        .nav-search input::placeholder {
            color: var(--bs-muted);
            opacity: 0.7;
        }

        .nav-search-mobile-btn {
            display: none;
            background: none;
            border: none;
            font-size: 18px;
            color: var(--bs-dark);
            cursor: pointer;
            padding: 4px 8px;
        }
        @media (max-width: 768px) {
            .nav-search {
                display: none;
            }
            .nav-search-mobile-btn {
                display: inline-flex;
            }
        }

        .btn-primary-custom {
            background: var(--bs-secondary) !important;
            color: #FFFFFF !important;
            border: none !important;
            border-radius: var(--bs-border-radius-pill) !important;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--bs-transition), transform var(--bs-transition) !important;
            white-space: nowrap;
        }
        .btn-primary-custom:hover {
            background: #E0951A !important;
            transform: translateY(-1px);
            color: #FFFFFF !important;
        }
        .btn-primary-custom:active {
            background: #C87E12 !important;
            transform: translateY(0);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--bs-secondary);
            outline-offset: 2px;
        }

        /* 频道 Tabs 行 */
        .nav-channel-bar {
            background: #FFFFFF;
            border-top: 1px solid #F0F2F5;
            padding: 0 24px;
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-channel-bar::-webkit-scrollbar {
            display: none;
        }
        @media (max-width: 768px) {
            .nav-channel-bar {
                padding: 0 16px;
            }
        }

        .nav-channel-list {
            display: flex;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 6px 0;
            min-width: max-content;
        }
        .nav-channel-list li {
            margin: 0;
            padding: 0;
        }
        .nav-channel-list a {
            display: inline-block;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--bs-dark);
            border-radius: var(--bs-border-radius-pill);
            text-decoration: none;
            transition: background var(--bs-transition), color var(--bs-transition);
            white-space: nowrap;
        }
        .nav-channel-list a:hover {
            background: rgba(74, 143, 228, 0.08);
            color: var(--bs-primary);
        }
        .nav-channel-list a.active {
            background: var(--bs-primary);
            color: #FFFFFF;
            font-weight: 600;
        }
        .nav-channel-list a.active:hover {
            background: var(--bs-primary);
            color: #FFFFFF;
        }
        .nav-channel-list a:focus-visible {
            outline: 2px solid var(--bs-secondary);
            outline-offset: 2px;
        }

        /* ========== 移动端搜索弹窗 ========== */
        .mobile-search-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(28, 61, 107, 0.6);
            z-index: 1050;
            justify-content: center;
            align-items: flex-start;
            padding-top: 80px;
            backdrop-filter: blur(4px);
        }
        .mobile-search-overlay.active {
            display: flex;
        }
        .mobile-search-box {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius);
            padding: 24px;
            width: 90%;
            max-width: 480px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .mobile-search-box input {
            flex: 1;
            border: 1px solid #E8ECF1;
            border-radius: var(--bs-border-radius-pill);
            padding: 12px 18px;
            font-size: 16px;
            outline: none;
            transition: border-color var(--bs-transition);
        }
        .mobile-search-box input:focus {
            border-color: var(--bs-primary);
        }
        .mobile-search-box .btn-close-search {
            background: none;
            border: none;
            font-size: 24px;
            color: var(--bs-muted);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ========== Breadcrumb ========== */
        .article-breadcrumb {
            background: var(--bs-light-bg);
            padding: 14px 0;
            border-bottom: 1px solid #F0F2F5;
        }
        .article-breadcrumb .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--bs-muted);
            flex-wrap: wrap;
        }
        .article-breadcrumb .breadcrumb-inner a {
            color: var(--bs-muted);
            text-decoration: none;
        }
        .article-breadcrumb .breadcrumb-inner a:hover {
            color: var(--bs-primary);
        }
        .article-breadcrumb .breadcrumb-inner .sep {
            color: #C0C7D1;
            font-size: 12px;
        }
        .article-breadcrumb .breadcrumb-inner .current {
            color: var(--bs-dark);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        @media (max-width: 576px) {
            .article-breadcrumb .breadcrumb-inner .current {
                max-width: 180px;
            }
        }

        /* ========== 文章头部 TDK 区 ========== */
        .article-header {
            padding: 48px 0 24px;
            background: #FFFFFF;
            border-bottom: 1px solid #F0F2F5;
        }
        .article-header .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 16px;
            font-size: 14px;
            color: var(--bs-muted);
        }
        .article-header .article-meta .category-tag {
            background: #E8F0FE;
            color: var(--bs-primary);
            padding: 4px 14px;
            border-radius: var(--bs-border-radius-pill);
            font-weight: 500;
            font-size: 13px;
        }
        .article-header .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-header .article-meta .meta-item i {
            font-size: 14px;
            opacity: 0.7;
        }
        .article-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--bs-dark);
            margin: 0;
            word-break: break-word;
        }
        @media (max-width: 768px) {
            .article-header {
                padding: 32px 0 20px;
            }
            .article-header h1 {
                font-size: 26px;
            }
        }
        @media (max-width: 576px) {
            .article-header h1 {
                font-size: 22px;
            }
            .article-header .article-meta {
                gap: 12px;
                font-size: 13px;
            }
        }

        /* ========== 文章正文区 ========== */
        .article-body-wrap {
            padding: 48px 0 64px;
            background: #FFFFFF;
        }
        .article-body {
            max-width: var(--bs-max-width-article);
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: #2D3A4A;
        }
        .article-body p {
            margin-bottom: 2em;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--bs-dark);
            margin-top: 2.2em;
            margin-bottom: 0.8em;
            padding-bottom: 0.4em;
            border-bottom: 2px solid var(--bs-primary);
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--bs-dark);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        .article-body img {
            border-radius: var(--bs-border-radius-sm);
            box-shadow: var(--bs-box-shadow);
            margin: 2em auto;
            max-width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--bs-secondary);
            background: #FFF8EE;
            padding: 16px 24px;
            margin: 2em 0;
            border-radius: 0 var(--bs-border-radius-sm) var(--bs-border-radius-sm) 0;
            color: #5A4A2A;
            font-style: normal;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body pre {
            background: var(--bs-dark);
            color: #E8F0FE;
            padding: 20px 24px;
            border-radius: var(--bs-border-radius-sm);
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.6;
            margin: 2em 0;
        }
        .article-body code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: 0.9em;
            background: #F0F2F5;
            padding: 2px 8px;
            border-radius: 4px;
            color: #E83E8C;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body ul,
        .article-body ol {
            margin: 1.5em 0;
            padding-left: 1.8em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body a {
            color: var(--bs-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--bs-secondary);
        }
        .article-body .article-empty {
            text-align: center;
            padding: 80px 20px;
            color: var(--bs-muted);
            background: var(--bs-light-bg);
            border-radius: var(--bs-border-radius);
        }
        .article-body .article-empty i {
            font-size: 48px;
            opacity: 0.3;
            margin-bottom: 16px;
        }
        .article-body .article-empty h3 {
            color: var(--bs-dark);
            font-weight: 600;
        }
        .article-body .article-empty p {
            margin-bottom: 1em;
        }
        .article-body .article-empty .btn-back-home {
            display: inline-block;
            margin-top: 12px;
            padding: 10px 28px;
            background: var(--bs-primary);
            color: #FFFFFF;
            border-radius: var(--bs-border-radius-pill);
            text-decoration: none;
            font-weight: 600;
            transition: background var(--bs-transition);
        }
        .article-body .article-empty .btn-back-home:hover {
            background: var(--bs-dark);
            color: #FFFFFF;
        }

        @media (max-width: 768px) {
            .article-body-wrap {
                padding: 32px 0 48px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-body blockquote {
                padding: 12px 18px;
            }
        }

        /* ========== 相关推荐区 ========== */
        .related-section {
            padding: 56px 0 48px;
            background: var(--bs-light-bg);
        }
        .related-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--bs-dark);
            margin-bottom: 32px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius);
            overflow: hidden;
            box-shadow: var(--bs-box-shadow);
            transition: transform var(--bs-transition), box-shadow var(--bs-transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bs-box-shadow-hover);
        }
        .related-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #F0F2F5;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 16px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--bs-dark);
            margin: 0 0 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--bs-muted);
            margin: 0 0 12px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .related-card .card-body .read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--bs-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--bs-transition);
        }
        .related-card .card-body .read-more:hover {
            gap: 10px;
            color: var(--bs-secondary);
        }

        @media (max-width: 992px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-section .section-title {
                font-size: 20px;
                margin-bottom: 24px;
            }
        }

        /* ========== 返回入口 ========== */
        .back-entry {
            padding: 32px 0 48px;
            text-align: center;
            background: var(--bs-light-bg);
        }
        .back-entry .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--bs-primary);
            color: #FFFFFF;
            border-radius: var(--bs-border-radius-pill);
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: background var(--bs-transition), transform var(--bs-transition);
        }
        .back-entry .btn-back:hover {
            background: var(--bs-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .back-entry .btn-back i {
            font-size: 16px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bs-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col h5 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 14px;
            transition: color var(--bs-transition);
        }
        .footer-col ul li a:hover {
            color: var(--bs-secondary);
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand i {
            color: var(--bs-secondary);
            font-size: 26px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 6px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 18px;
            transition: background var(--bs-transition), color var(--bs-transition);
            text-decoration: none;
        }
        .footer-social a:hover {
            background: var(--bs-secondary);
            color: #FFFFFF;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--bs-secondary);
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .footer-desc {
                max-width: 100%;
            }
            .footer-brand {
                justify-content: center;
            }
            .footer-social {
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ========== 通用工具 ========== */
        .text-muted {
            color: var(--bs-muted) !important;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }

        /* ========== 响应式微调 ========== */
        @media (max-width: 768px) {
            :root {
                --bs-spacing-section: var(--bs-spacing-section-mobile);
            }
        }
        @media (max-width: 576px) {
            .nav-actions .btn-primary-custom {
                padding: 6px 14px;
                font-size: 12px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --bs-primary: #4A8FE4;
            --bs-secondary: #F5A623;
            --bs-dark: #1C3D6B;
            --bs-bg: #F8FAFC;
            --bs-card-bg: #FFFFFF;
            --bs-link-color: #4A8FE4;
            --bs-success: #34C759;
            --bs-danger: #FF3B30;
            --bs-text-muted: #6B7A8F;
            --bs-border-radius: 16px;
            --bs-border-radius-sm: 12px;
            --bs-border-radius-lg: 24px;
            --bs-box-shadow: 0 4px 20px rgba(26, 61, 92, 0.08);
            --bs-box-shadow-hover: 0 8px 32px rgba(26, 61, 92, 0.15);
            --bs-transition: 0.3s ease;
            --bs-font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --bs-body-line-height: 1.7;
            --bs-heading-line-height: 1.3;
            --bs-spacing-section: 80px;
            --bs-spacing-section-mobile: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-font-family);
            background-color: var(--bs-bg);
            color: #1C3D6B;
            line-height: var(--bs-body-line-height);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--bs-link-color);
            text-decoration: none;
            transition: var(--bs-transition);
        }
        a:hover {
            color: var(--bs-secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }
        /* ===== Header / Nav (双层导航) ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #FFFFFF;
            box-shadow: 0 2px 16px rgba(26, 61, 92, 0.06);
        }
        .nav-brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            background: #FFFFFF;
            border-bottom: 1px solid #E8EDF2;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            color: var(--bs-dark);
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .nav-brand i {
            font-size: 28px;
            color: var(--bs-secondary);
        }
        .nav-brand:hover {
            color: var(--bs-dark);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: #F1F4F8;
            border-radius: 24px;
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid transparent;
            transition: var(--bs-transition);
        }
        .nav-search:focus-within {
            border-color: var(--bs-primary);
            background: #FFFFFF;
        }
        .nav-search i {
            color: var(--bs-text-muted);
            font-size: 14px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--bs-dark);
            width: 180px;
        }
        .nav-search input::placeholder {
            color: #9AA8B9;
        }
        .nav-search-mobile-btn {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--bs-dark);
            cursor: pointer;
            padding: 4px 8px;
        }
        .btn-primary-custom {
            background: var(--bs-secondary) !important;
            border: none !important;
            color: #FFFFFF !important;
            border-radius: 24px !important;
            padding: 12px 28px;
            font-weight: 600;
            transition: var(--bs-transition);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
        }
        .btn-primary-custom:hover {
            background: #E0951A !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
        }
        .btn-primary-custom:active {
            background: #C87E12 !important;
            transform: translateY(0);
        }
        .btn-secondary-custom {
            background: var(--bs-primary) !important;
            border: none !important;
            color: #FFFFFF !important;
            border-radius: 24px !important;
            padding: 12px 28px;
            font-weight: 600;
            transition: var(--bs-transition);
            box-shadow: 0 4px 14px rgba(74, 143, 228, 0.3);
        }
        .btn-secondary-custom:hover {
            background: #3A7BD5 !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(74, 143, 228, 0.4);
        }
        .btn-secondary-custom:active {
            background: #2E6BC4 !important;
            transform: translateY(0);
        }
        .btn-ghost-custom {
            background: transparent !important;
            border: 2px solid var(--bs-primary) !important;
            color: var(--bs-primary) !important;
            border-radius: 24px !important;
            padding: 10px 26px;
            font-weight: 600;
            transition: var(--bs-transition);
        }
        .btn-ghost-custom:hover {
            background: rgba(74, 143, 228, 0.08) !important;
            border-color: #3A7BD5 !important;
            color: #3A7BD5 !important;
        }
        .btn-ghost-custom:active {
            background: rgba(74, 143, 228, 0.15) !important;
        }
        .btn-white-custom {
            background: #FFFFFF !important;
            border: none !important;
            color: var(--bs-primary) !important;
            border-radius: 24px !important;
            padding: 12px 32px;
            font-weight: 600;
            transition: var(--bs-transition);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
        }
        .btn-white-custom:hover {
            background: #F0F4FF !important;
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }
        /* 频道Tabs行 */
        .nav-channel-bar {
            background: #FFFFFF;
            padding: 0 24px;
            border-bottom: 1px solid #E8EDF2;
        }
        .nav-channel-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding-bottom: 0;
        }
        .nav-channel-list::-webkit-scrollbar {
            display: none;
        }
        .nav-channel-list li {
            flex-shrink: 0;
        }
        .nav-channel-list a {
            display: block;
            padding: 12px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--bs-dark);
            border-radius: 24px 24px 0 0;
            transition: var(--bs-transition);
            text-decoration: none;
            position: relative;
        }
        .nav-channel-list a:hover {
            background: rgba(74, 143, 228, 0.06);
            color: var(--bs-primary);
        }
        .nav-channel-list a.active {
            background: var(--bs-primary);
            color: #FFFFFF;
            font-weight: 600;
        }
        .nav-channel-list a.active:hover {
            background: var(--bs-primary);
            color: #FFFFFF;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #E8F0FE 0%, #F0F7FF 50%, #FFFFFF 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(74, 143, 228, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .category-hero-text {
            flex: 1 1 500px;
        }
        .category-hero-text h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--bs-dark);
            margin-bottom: 16px;
        }
        .category-hero-text h1 span {
            color: var(--bs-secondary);
        }
        .category-hero-text .subtitle {
            font-size: 18px;
            color: #4A5A72;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .category-hero-text .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .category-hero-text .hero-badges .badge-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(74, 143, 228, 0.1);
            color: var(--bs-primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }
        .category-hero-text .hero-badges .badge-item i {
            font-size: 14px;
        }
        .category-hero-text .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .category-hero-image {
            flex: 0 0 380px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(26, 61, 92, 0.12);
            background: #FFFFFF;
            padding: 8px;
        }
        .category-hero-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: 14px;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--bs-spacing-section) 0;
        }
        .section-block-alt {
            background: #FFFFFF;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--bs-dark);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--bs-text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* ===== 特色卖点区 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius);
            padding: 32px 24px;
            box-shadow: var(--bs-box-shadow);
            transition: var(--bs-transition);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--bs-box-shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(74, 143, 228, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 28px;
            color: var(--bs-primary);
            transition: var(--bs-transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--bs-primary);
            color: #FFFFFF;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--bs-dark);
        }
        .feature-card p {
            font-size: 15px;
            color: #4A5A72;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 推荐游戏卡片 ===== */
        .game-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius);
            overflow: hidden;
            box-shadow: var(--bs-box-shadow);
            transition: var(--bs-transition);
        }
        .game-card:hover {
            box-shadow: var(--bs-box-shadow-hover);
            transform: translateY(-4px);
        }
        .game-card .card-img {
            position: relative;
            overflow: hidden;
            height: 200px;
        }
        .game-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .game-card:hover .card-img img {
            transform: scale(1.05);
        }
        .game-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--bs-secondary);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }
        .game-card .card-body {
            padding: 20px;
        }
        .game-card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--bs-dark);
        }
        .game-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--bs-text-muted);
            margin-bottom: 8px;
        }
        .game-card .card-body .meta .stars {
            color: var(--bs-secondary);
            letter-spacing: 1px;
        }
        .game-card .card-body .desc {
            font-size: 14px;
            color: #4A5A72;
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .card-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }
        .game-card .card-body .tags .tag {
            background: #E8F0FE;
            color: var(--bs-primary);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 12px;
            font-weight: 500;
        }
        .game-card .card-body .card-cta {
            display: inline-block;
            padding: 8px 20px;
            border: 2px solid var(--bs-primary);
            border-radius: 24px;
            color: var(--bs-primary);
            font-weight: 600;
            font-size: 14px;
            transition: var(--bs-transition);
        }
        .game-card .card-body .card-cta:hover {
            background: var(--bs-primary);
            color: #FFFFFF;
        }

        /* ===== 适用场景 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-item {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius-sm);
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--bs-box-shadow);
            transition: var(--bs-transition);
        }
        .scene-item:hover {
            box-shadow: var(--bs-box-shadow-hover);
            transform: translateY(-3px);
        }
        .scene-item .icon {
            font-size: 36px;
            color: var(--bs-primary);
            margin-bottom: 12px;
        }
        .scene-item h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--bs-dark);
        }
        .scene-item p {
            font-size: 13px;
            color: var(--bs-text-muted);
            margin-bottom: 0;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius);
            padding: 28px 20px;
            box-shadow: var(--bs-box-shadow);
            text-align: center;
            position: relative;
            transition: var(--bs-transition);
        }
        .step-card:hover {
            box-shadow: var(--bs-box-shadow-hover);
            transform: translateY(-3px);
        }
        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bs-primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--bs-dark);
        }
        .step-card p {
            font-size: 14px;
            color: #4A5A72;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: var(--bs-border-radius-sm);
            margin-bottom: 12px;
            box-shadow: var(--bs-box-shadow);
            overflow: hidden;
            transition: var(--bs-transition);
        }
        .faq-item:hover {
            box-shadow: var(--bs-box-shadow-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--bs-dark);
            background: #FFFFFF;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--bs-transition);
        }
        .faq-question i {
            color: var(--bs-primary);
            transition: transform 0.3s ease;
            font-size: 18px;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: #4A5A72;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #4A8FE4 0%, #3A7BD5 50%, #F5A623 100%);
            padding: 60px 0;
            text-align: center;
            border-radius: 0;
        }
        .cta-block h2 {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 内部链接区 ===== */
        .internal-links {
            background: #FFFFFF;
            padding: 40px 0;
        }
        .internal-links .link-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .internal-links .link-grid a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: #F1F4F8;
            border-radius: 24px;
            color: var(--bs-dark);
            font-weight: 500;
            transition: var(--bs-transition);
        }
        .internal-links .link-grid a:hover {
            background: var(--bs-primary);
            color: #FFFFFF;
        }
        .internal-links .link-grid a i {
            font-size: 14px;
        }

        /* ===== Footer (与首页一致) ===== */
        .site-footer {
            background: var(--bs-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand i {
            color: var(--bs-secondary);
            font-size: 26px;
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 300px;
        }
        .site-footer h5 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--bs-transition);
        }
        .site-footer ul li a:hover {
            color: var(--bs-secondary);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            transition: var(--bs-transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--bs-secondary);
            color: #FFFFFF;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--bs-secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .category-hero-text h1 {
                font-size: 36px;
            }
            .category-hero-image {
                flex: 0 0 300px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .game-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenes-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 28px;
            }
            .section-block {
                padding: var(--bs-spacing-section-mobile) 0;
            }
        }
        @media (max-width: 768px) {
            .nav-search {
                display: none;
            }
            .nav-search-mobile-btn {
                display: block;
            }
            .nav-brand {
                font-size: 20px;
            }
            .nav-brand i {
                font-size: 22px;
            }
            .nav-brand-bar {
                padding: 10px 16px;
            }
            .nav-channel-bar {
                padding: 0 16px;
            }
            .nav-channel-list a {
                padding: 10px 14px;
                font-size: 14px;
            }
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero .container {
                flex-direction: column;
            }
            .category-hero-text h1 {
                font-size: 30px;
            }
            .category-hero-text .subtitle {
                font-size: 16px;
            }
            .category-hero-image {
                flex: 0 0 auto;
                width: 100%;
                max-width: 360px;
            }
            .category-hero-image img {
                height: 200px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .game-cards-grid {
                grid-template-columns: 1fr;
            }
            .scenes-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .site-footer .footer-desc {
                margin: 0 auto;
            }
            .site-footer .footer-social {
                justify-content: center;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-block h2 {
                font-size: 28px;
            }
            .cta-block p {
                font-size: 16px;
            }
            .internal-links .link-grid {
                gap: 12px;
            }
            .internal-links .link-grid a {
                padding: 10px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 26px;
            }
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .nav-brand-bar {
                padding: 8px 12px;
            }
            .nav-actions .btn-primary-custom {
                padding: 6px 14px;
                font-size: 13px !important;
            }
            .nav-channel-list a {
                padding: 8px 12px;
                font-size: 13px;
            }
            .section-block {
                padding: 32px 0;
            }
            .cta-block {
                padding: 40px 0;
            }
        }

        /* ===== 额外工具类 ===== */
        .text-muted {
            color: var(--bs-text-muted) !important;
        }
        .text-primary {
            color: var(--bs-primary) !important;
        }
        .text-secondary {
            color: var(--bs-secondary) !important;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .mb-1 {
            margin-bottom: 8px !important;
        }
        .mb-2 {
            margin-bottom: 16px !important;
        }
        .mb-3 {
            margin-bottom: 24px !important;
        }
        .mb-4 {
            margin-bottom: 32px !important;
        }
        .mt-2 {
            margin-top: 16px !important;
        }
        .mt-3 {
            margin-top: 24px !important;
        }
        .mt-4 {
            margin-top: 32px !important;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-center {
            text-align: center;
        }
        .w-100 {
            width: 100%;
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #4A8FE4;
            --primary-dark: #3578c8;
            --primary-light: #e8f0fe;
            --secondary: #F5A623;
            --secondary-dark: #E0951A;
            --secondary-active: #C87E12;
            --dark: #1C3D6B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text: #1C3D6B;
            --text-light: #6B7A8F;
            --text-muted: #8FA0B4;
            --border: #E8EDF2;
            --success: #34C759;
            --danger: #FF3B30;
            --radius: 16px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --radius-pill: 24px;
            --shadow: 0 4px 20px rgba(26, 61, 92, 0.08);
            --shadow-hover: 0 8px 32px rgba(26, 61, 92, 0.15);
            --transition: 0.3s ease;
            --font-sans: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-en: 'Inter', 'Noto Sans SC', sans-serif;
            --nav-height: 48px;
            --brand-bar-height: 64px;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
        }

        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--dark); margin-bottom: 0.5em; }
        p { margin-bottom: 0; }
        .container { max-width: 1200px; padding: 0 20px; margin: 0 auto; }
        .container-narrow { max-width: 760px; padding: 0 20px; margin: 0 auto; }

        /* ===== Section Spacing ===== */
        .section { padding: var(--section-gap) 0; }
        @media (max-width: 768px) { .section { padding: var(--section-gap-mobile) 0; } }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: var(--card-bg);
            box-shadow: 0 2px 12px rgba(26, 61, 92, 0.06);
        }
        .nav-brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--brand-bar-height);
            padding: 0 24px;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            font-family: var(--font-sans);
            text-decoration: none;
        }
        .nav-brand i { font-size: 26px; color: var(--primary); }
        .nav-brand:hover { color: var(--dark); }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            gap: 8px;
            border: 1px solid var(--border);
            transition: border-color var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); }
        .nav-search i { color: var(--text-light); font-size: 14px; }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 6px 0;
            width: 200px;
            font-size: 14px;
            color: var(--text);
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search-mobile-btn { display: none; background: none; font-size: 20px; color: var(--dark); cursor: pointer; padding: 4px 8px; }
        .btn-primary-custom {
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 28px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition);
            font-family: var(--font-sans);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-primary-custom:hover { background: var(--secondary-dark); color: #fff; transform: translateY(-1px); }
        .btn-primary-custom:active { background: var(--secondary-active); transform: translateY(0); }
        .btn-secondary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 28px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition);
            font-family: var(--font-sans);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-secondary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
        .btn-ghost-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius-pill);
            padding: 8px 26px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            font-family: var(--font-sans);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-ghost-custom:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-1px); }
        .btn-sm { padding: 8px 20px; font-size: 14px; }
        .btn-lg { padding: 14px 36px; font-size: 17px; }

        .nav-channel-bar {
            background: #fff;
            padding: 0 24px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }
        .nav-channel-list {
            display: flex;
            gap: 4px;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0;
            margin: 0;
            width: 100%;
        }
        .nav-channel-list::-webkit-scrollbar { display: none; }
        .nav-channel-list li { flex-shrink: 0; }
        .nav-channel-list a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: transparent;
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-channel-list a:hover { background: var(--primary-light); color: var(--primary); }
        .nav-channel-list a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .nav-brand-bar { padding: 0 16px; height: 56px; }
            .nav-brand { font-size: 18px; }
            .nav-brand i { font-size: 22px; }
            .nav-search { display: none; }
            .nav-search-mobile-btn { display: block; }
            .nav-channel-bar { padding: 0 12px; }
            .nav-channel-list a { padding: 6px 14px; font-size: 13px; }
            .nav-actions .btn-primary-custom { padding: 6px 14px; font-size: 12px; }
        }

        /* ===== Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #E8F0FE 0%, #FFFFFF 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(74,143,228,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }
        .page-hero .hero-text { flex: 1; }
        .page-hero .hero-text h1 {
            font-size: 42px;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .page-hero .hero-text h1 span { color: var(--primary); }
        .page-hero .hero-text .subtitle {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .page-hero .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .page-hero .hero-image {
            flex: 0 0 340px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            aspect-ratio: 9 / 16;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
        }
        .page-hero .hero-image img { width: 100%; height: 100%; object-fit: cover; }
        @media (max-width: 992px) {
            .page-hero .hero-inner { flex-direction: column; text-align: center; }
            .page-hero .hero-text .subtitle { max-width: 100%; }
            .page-hero .hero-actions { justify-content: center; }
            .page-hero .hero-image { flex: 0 0 auto; width: 220px; aspect-ratio: 9 / 16; }
            .page-hero { padding: 48px 0 40px; }
            .page-hero .hero-text h1 { font-size: 30px; }
        }
        @media (max-width: 576px) {
            .page-hero .hero-text h1 { font-size: 26px; }
            .page-hero .hero-text .subtitle { font-size: 16px; }
            .page-hero .hero-image { width: 180px; }
        }

        /* ===== Section Title ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title .decor {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin-top: 12px;
        }
        @media (max-width: 768px) {
            .section-title h2 { font-size: 26px; }
            .section-title { margin-bottom: 32px; }
        }

        /* ===== Card Base ===== */
        .card-custom {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
            border: none;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-custom .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .card-custom .card-body { padding: 20px 24px 24px; }
        .card-custom .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .card-custom .badge-custom {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }
        .card-custom .badge-hot {
            background: #FFF0E0;
            color: var(--secondary);
        }
        .card-custom .badge-top {
            background: #FFE8E8;
            color: var(--danger);
        }
        .card-custom .rating {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--secondary);
            font-size: 14px;
        }
        .card-custom .rating i { font-size: 13px; }
        .card-custom .rating .score { font-weight: 700; color: var(--dark); margin-left: 4px; }

        /* ===== Ranking List ===== */
        .ranking-list { counter-reset: rank; }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
            margin-bottom: 12px;
            position: relative;
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }
        .ranking-item .rank-num {
            font-size: 28px;
            font-weight: 900;
            color: var(--text-muted);
            font-family: var(--font-en);
            min-width: 48px;
            text-align: center;
        }
        .ranking-item:nth-child(1) .rank-num { color: var(--secondary); }
        .ranking-item:nth-child(2) .rank-num { color: var(--text-light); }
        .ranking-item:nth-child(3) .rank-num { color: #CD7F32; }
        .ranking-item .rank-cover {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-light);
        }
        .ranking-item .rank-info { flex: 1; min-width: 0; }
        .ranking-item .rank-info h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--dark);
        }
        .ranking-item .rank-info .rank-desc {
            font-size: 14px;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 400px;
        }
        .ranking-item .rank-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .ranking-item .rank-meta .rating { font-size: 15px; }
        .ranking-item .rank-meta .rating i { font-size: 14px; }
        .ranking-item .rank-meta .rating .score { font-size: 18px; }
        .ranking-item .rank-meta .badge-custom { font-size: 13px; padding: 4px 14px; }
        @media (max-width: 768px) {
            .ranking-item { flex-wrap: wrap; gap: 12px; padding: 16px 18px; }
            .ranking-item .rank-num { font-size: 22px; min-width: 36px; }
            .ranking-item .rank-cover { width: 56px; height: 56px; }
            .ranking-item .rank-info h4 { font-size: 16px; }
            .ranking-item .rank-info .rank-desc { max-width: 180px; font-size: 13px; }
            .ranking-item .rank-meta { width: 100%; justify-content: flex-start; gap: 12px; }
        }

        /* ===== Feature Grid ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 28px;
            color: var(--primary);
        }
        .feature-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
        .feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
        @media (max-width: 992px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 576px) { .feature-grid { grid-template-columns: 1fr; } }

        /* ===== Process Steps ===== */
        .process-steps {
            display: flex;
            gap: 24px;
            justify-content: center;
            counter-reset: step;
        }
        .process-step {
            flex: 1;
            max-width: 260px;
            text-align: center;
            position: relative;
        }
        .process-step::after {
            content: '→';
            position: absolute;
            right: -18px;
            top: 30px;
            font-size: 24px;
            color: var(--text-muted);
            font-weight: 300;
        }
        .process-step:last-child::after { display: none; }
        .process-step .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-family: var(--font-en);
        }
        .process-step h5 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
        .process-step p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
        @media (max-width: 768px) {
            .process-steps { flex-direction: column; align-items: center; gap: 32px; }
            .process-step::after { display: none; }
            .process-step { max-width: 100%; }
        }

        /* ===== FAQ Accordion ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover { background: var(--bg); }
        .faq-question i { transition: transform var(--transition); color: var(--primary); font-size: 14px; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }
        @media (max-width: 576px) {
            .faq-question { font-size: 15px; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; font-size: 14px; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #6BA3E8 50%, var(--secondary) 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-pill);
            padding: 16px 48px;
            font-size: 18px;
            font-weight: 700;
            transition: transform var(--transition), box-shadow var(--transition);
            font-family: var(--font-sans);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .btn-cta:hover {
            transform: scale(1.05);
            box-shadow: 0 8px 32px rgba(0,0,0,0.15);
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 26px; }
            .cta-section p { font-size: 16px; }
            .cta-section .btn-cta { padding: 14px 32px; font-size: 16px; }
        }

        /* ===== Internal Links ===== */
        .internal-links {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 32px;
        }
        .internal-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            background: var(--card-bg);
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 14px;
            color: var(--text);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .internal-links a:hover {
            box-shadow: var(--shadow-hover);
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .internal-links a i { font-size: 14px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand i { font-size: 24px; color: var(--secondary); }
        .footer-desc { color: rgba(255,255,255,0.6); line-height: 1.8; max-width: 320px; }
        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul { padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col ul a:hover { color: var(--secondary); }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.7);
            transition: all var(--transition);
            font-size: 16px;
            text-decoration: none;
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; }
        .footer-bottom {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            padding: 20px 0;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.5);
            font-size: 13px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 576px) {
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-desc { max-width: 100%; }
            .footer-brand { justify-content: center; }
            .footer-social { justify-content: center; }
            .footer-bottom { flex-direction: column; gap: 8px; }
        }

        /* ===== Responsive Helpers ===== */
        @media (max-width: 768px) {
            .section { --section-gap: 48px; }
        }

/* roulang page: category3 */
:root {
            --primary: #4A8FE4;
            --primary-dark: #3578c7;
            --secondary: #F5A623;
            --secondary-dark: #E0951A;
            --accent: #1C3D6B;
            --bg-light: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-dark: #1C3D6B;
            --text-muted: #6B7A8F;
            --border-light: #E9EDF2;
            --radius-card: 16px;
            --radius-btn: 24px;
            --radius-input: 12px;
            --shadow-card: 0 4px 20px rgba(26, 61, 92, 0.08);
            --shadow-card-hover: 0 8px 32px rgba(26, 61, 92, 0.15);
            --transition: 0.3s ease;
            --font-sans: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-en: 'Inter', '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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-card); }
        .container { max-width: 1200px; padding: 0 20px; margin: 0 auto; }
        /* header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: #fff;
            box-shadow: 0 2px 12px rgba(26,61,92,0.06);
            border-bottom: 1px solid var(--border-light);
        }
        .nav-brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            max-width: 1200px;
            margin: 0 auto;
            gap: 16px;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.5px;
        }
        .nav-brand i { color: var(--secondary); font-size: 26px; }
        .nav-brand:hover { color: var(--accent); }
        .nav-actions { display: flex; align-items: center; gap: 16px; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-input);
            padding: 6px 16px;
            gap: 8px;
            transition: border-color var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(74,143,228,0.15); }
        .nav-search i { color: var(--text-muted); font-size: 15px; }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text-dark);
            width: 200px;
            font-family: var(--font-sans);
        }
        .nav-search input::placeholder { color: #aab3c0; }
        .nav-search-mobile-btn { display: none; background: none; border: none; font-size: 20px; color: var(--accent); cursor: pointer; padding: 4px 8px; }
        .btn-primary-custom {
            background: var(--secondary);
            border: none;
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 26px;
            transition: background var(--transition), transform var(--transition);
            font-size: 15px;
        }
        .btn-primary-custom:hover { background: var(--secondary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,166,35,0.35); }
        .btn-primary-custom:active { transform: translateY(0); background: #C87E12; }
        .btn-outline-custom {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 26px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            font-size: 15px;
        }
        .btn-outline-custom:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-outline-custom:active { transform: translateY(0); }
        .btn-secondary-custom {
            background: var(--primary);
            border: none;
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            transition: background var(--transition), transform var(--transition);
            font-size: 16px;
        }
        .btn-secondary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(74,143,228,0.35); }
        .btn-secondary-custom:active { transform: translateY(0); }
        .btn-white-custom {
            background: #fff;
            border: none;
            color: var(--accent);
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            transition: background var(--transition), transform var(--transition);
            font-size: 16px;
        }
        .btn-white-custom:hover { background: #f0f4ff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,255,255,0.3); }
        .btn-white-custom:active { transform: translateY(0); }
        /* channel bar */
        .nav-channel-bar {
            border-top: 1px solid var(--border-light);
            background: #fff;
            padding: 0 24px;
        }
        .nav-channel-list {
            list-style: none;
            display: flex;
            gap: 4px;
            padding: 0;
            margin: 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            -ms-overflow-style: none;
            max-width: 1200px;
            margin: 0 auto;
        }
        .nav-channel-list::-webkit-scrollbar { display: none; }
        .nav-channel-list li { display: inline-block; }
        .nav-channel-list a {
            display: inline-block;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 20px;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .nav-channel-list a:hover { color: var(--primary); background: #eef4fb; }
        .nav-channel-list a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        /* hero */
        .rank-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #E8F0FE 0%, #F0F7FF 50%, #FFF8EE 100%);
            overflow: hidden;
        }
        .rank-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(74,143,228,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .rank-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245,166,35,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .rank-hero .container { position: relative; z-index: 1; }
        .rank-hero h1 {
            font-size: 48px;
            font-weight: 900;
            color: var(--accent);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .rank-hero h1 i { color: var(--secondary); margin-right: 12px; }
        .rank-hero .lead {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .rank-hero .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .rank-hero .hero-stats .stat-item { text-align: left; }
        .rank-hero .hero-stats .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .rank-hero .hero-stats .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }
        /* sections */
        .section-pad { padding: 80px 0; }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 48px;
            max-width: 600px;
        }
        /* score system */
        .score-system {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 48px 40px;
            box-shadow: var(--shadow-card);
        }
        .score-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }
        .score-item { text-align: center; padding: 16px 8px; }
        .score-item .score-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 24px;
            color: #fff;
        }
        .score-item .score-icon.c1 { background: #4A8FE4; }
        .score-item .score-icon.c2 { background: #F5A623; }
        .score-item .score-icon.c3 { background: #34C759; }
        .score-item .score-icon.c4 { background: #FF6B6B; }
        .score-item .score-icon.c5 { background: #A29BFE; }
        .score-item h5 { font-size: 16px; font-weight: 600; color: var(--accent); margin-bottom: 4px; }
        .score-item p { font-size: 13px; color: var(--text-muted); margin: 0; }
        /* rank cards */
        .rank-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }
        .rank-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
        .rank-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--bg-light);
        }
        .rank-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .rank-card:hover .card-img-wrap img { transform: scale(1.05); }
        .rank-card .rank-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            padding: 4px 14px;
            border-radius: 20px;
            box-shadow: 0 2px 8px rgba(245,166,35,0.3);
        }
        .rank-card .rank-badge.top1 { background: #FF3B30; }
        .rank-card .rank-badge.top2 { background: #F5A623; }
        .rank-card .rank-badge.top3 { background: #4A8FE4; }
        .rank-card .card-body {
            padding: 20px 20px 24px;
        }
        .rank-card .card-body h5 {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 6px;
        }
        .rank-card .card-body .game-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .rank-card .card-body .game-tags span {
            background: #E8F0FE;
            color: var(--primary-dark);
            font-size: 12px;
            padding: 2px 12px;
            border-radius: 12px;
            font-weight: 500;
        }
        .rank-card .card-body .rating-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .rank-card .card-body .rating-row .stars { color: var(--secondary); font-size: 15px; letter-spacing: 2px; }
        .rank-card .card-body .rating-row .score { font-weight: 700; font-size: 20px; color: var(--accent); }
        .rank-card .card-body .rating-row .reviews { color: var(--text-muted); font-size: 13px; }
        .rank-card .card-body .desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rank-card .card-body .btn-sm-custom {
            font-size: 13px;
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-weight: 500;
            transition: background var(--transition);
        }
        .rank-card .card-body .btn-sm-custom:hover { background: var(--primary-dark); color: #fff; }
        /* reviews */
        .review-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) var(--border-light);
        }
        .review-scroll::-webkit-scrollbar { height: 6px; }
        .review-scroll::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }
        .review-scroll::-webkit-scrollbar-track { background: var(--border-light); border-radius: 10px; }
        .review-item {
            min-width: 280px;
            max-width: 320px;
            flex-shrink: 0;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition);
        }
        .review-item:hover { box-shadow: var(--shadow-card-hover); }
        .review-item .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .review-item .review-header .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 18px;
            flex-shrink: 0;
        }
        .review-item .review-header .avatar.a2 { background: var(--secondary); }
        .review-item .review-header .avatar.a3 { background: #34C759; }
        .review-item .review-header .avatar.a4 { background: #A29BFE; }
        .review-item .review-header .avatar.a5 { background: #FF6B6B; }
        .review-item .review-header .user-info .name { font-weight: 600; font-size: 15px; color: var(--accent); }
        .review-item .review-header .user-info .stars { color: var(--secondary); font-size: 13px; letter-spacing: 1px; }
        .review-item .review-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            font-style: italic;
        }
        .review-item .review-text::before { content: '“'; color: var(--primary); font-size: 20px; font-weight: 700; }
        .review-item .review-text::after { content: '”'; color: var(--primary); font-size: 20px; font-weight: 700; }
        .review-item .review-game {
            font-size: 13px;
            color: var(--primary);
            margin-top: 10px;
            font-weight: 500;
        }
        /* faq */
        .faq-section {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 40px 36px;
            box-shadow: var(--shadow-card);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
        }
        .faq-item:last-child { border-bottom: none; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 16px;
            color: var(--accent);
            cursor: pointer;
            user-select: none;
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { color: var(--primary); font-size: 14px; transition: transform var(--transition); }
        .faq-question.active i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 20px 0 0;
        }
        .faq-answer.open { max-height: 300px; padding-top: 14px; }
        /* cta */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #6BA5E7 50%, var(--secondary) 100%);
            border-radius: var(--radius-card);
            padding: 60px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; position: relative; }
        .cta-section p { font-size: 17px; opacity: 0.9; margin-bottom: 28px; position: relative; max-width: 500px; margin-left: auto; margin-right: auto; }
        .cta-section .btn-white-custom { font-size: 17px; padding: 14px 36px; position: relative; }
        /* internal links */
        .internal-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 32px;
        }
        .internal-links a {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            font-weight: 500;
            color: var(--accent);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .internal-links a:hover { border-color: var(--primary); box-shadow: 0 4px 16px rgba(74,143,228,0.12); color: var(--primary); }
        /* footer */
        .site-footer {
            background: var(--accent);
            color: #d0d9e6;
            padding: 60px 0 0;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand i { color: var(--secondary); font-size: 24px; }
        .footer-desc { font-size: 14px; line-height: 1.8; color: #b0bed6; max-width: 320px; }
        .footer-col h5 {
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: #b0bed6; font-size: 14px; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-social { display: flex; gap: 14px; margin-top: 4px; }
        .footer-social a { color: #b0bed6; font-size: 20px; transition: color var(--transition); }
        .footer-social a:hover { color: var(--secondary); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            padding: 24px 0 32px;
            font-size: 13px;
            color: #8a9bb8;
        }
        .footer-bottom a { color: #b0bed6; }
        .footer-bottom a:hover { color: var(--secondary); }
        /* responsive */
        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .rank-hero h1 { font-size: 38px; }
        }
        @media (max-width: 768px) {
            .nav-search { display: none; }
            .nav-search-mobile-btn { display: block; }
            .nav-brand-bar { padding: 10px 16px; flex-wrap: wrap; }
            .nav-brand { font-size: 18px; }
            .nav-brand i { font-size: 22px; }
            .nav-actions .btn-primary-custom { padding: 6px 16px; font-size: 13px; }
            .nav-channel-list a { padding: 8px 14px; font-size: 14px; }
            .rank-hero { padding: 48px 0 40px; }
            .rank-hero h1 { font-size: 30px; }
            .rank-hero .lead { font-size: 16px; }
            .rank-hero .hero-stats { gap: 24px; }
            .rank-hero .hero-stats .stat-num { font-size: 22px; }
            .section-pad { padding: 48px 0; }
            .section-title { font-size: 26px; }
            .section-subtitle { font-size: 15px; margin-bottom: 32px; }
            .score-system { padding: 32px 20px; }
            .score-grid { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 16px; }
            .review-item { min-width: 240px; }
            .faq-section { padding: 28px 20px; }
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; align-items: center; gap: 10px; }
            .internal-links a { padding: 8px 20px; font-size: 14px; }
        }
        @media (max-width: 520px) {
            .rank-hero h1 { font-size: 26px; }
            .rank-hero .hero-stats { flex-direction: column; gap: 12px; }
            .section-title { font-size: 22px; }
            .score-grid { grid-template-columns: repeat(2, 1fr); }
            .review-item { min-width: 200px; padding: 16px 18px; }
            .nav-channel-list a { padding: 6px 12px; font-size: 13px; }
        }