/* roulang page: index */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ::selection {
            background: var(--color-primary);
            color: #fff;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 72px 0;
        }

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

        .section-white {
            background: var(--color-surface);
        }

        .font-numeric {
            font-family: var(--font-numeric);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-darker) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }

        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .card-hover-lift {
            transition: var(--transition-smooth);
        }

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        .icon-box {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            flex-shrink: 0;
            transition: var(--transition-base);
        }

        .icon-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .icon-green {
            background: #E8F8EF;
            color: var(--color-green);
        }

        .icon-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }

        .divider {
            height: 1px;
            background: var(--color-border);
            width: 100%;
        }

        .avatar-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .star-rating {
            color: var(--color-orange);
            font-size: 0.9rem;
            letter-spacing: 2px;
        }

        .score-bar {
            height: 8px;
            border-radius: 4px;
            background: #E8ECF0;
            overflow: hidden;
        }

        .score-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            transition: width 0.6s ease;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: #F8FAFC;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            transition: var(--transition-base);
            cursor: pointer;
            user-select: none;
        }

        .tag-cloud-item:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: #fff;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: #CBD5E1;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            text-align: left;
            transition: var(--transition-base);
            cursor: pointer;
            background: none;
            border: none;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px 20px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            transition: var(--transition-base);
            align-items: flex-start;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-date {
            background: #F1F5F9;
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            text-align: center;
            min-width: 72px;
            flex-shrink: 0;
            font-family: var(--font-numeric);
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .news-content {
            flex: 1;
        }

        .news-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            margin-bottom: 6px;
            transition: var(--transition-base);
        }

        .news-title:hover {
            color: var(--color-primary);
        }

        .news-summary {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .read-more {
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .read-more:hover {
            color: var(--color-primary-dark);
            gap: 8px;
        }

        .read-more .arrow {
            transition: transform 0.2s ease;
        }

        .read-more:hover .arrow {
            transform: translateX(3px);
        }

        .price-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .price-card.featured {
            border: 2px solid var(--color-primary);
            box-shadow: var(--shadow-lg);
        }

        .price-card .price-tag {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-primary);
            font-family: var(--font-numeric);
            line-height: 1;
        }

        .price-card .price-unit {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .price-feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
            text-align: left;
        }

        .price-feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-secondary);
            font-size: 0.9rem;
        }

        .price-feature-list li .check-icon {
            color: var(--color-green);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .partner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: #F8FAFC;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
            cursor: default;
        }

        .partner-tag:hover {
            background: var(--color-primary-light);
            border-color: #B8D4F0;
            color: var(--color-primary);
        }

        .hero-slant {
            position: relative;
            overflow: hidden;
        }

        .hero-slant::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--color-bg);
            clip-path: polygon(0 100%, 100% 0, 100% 100%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-bg-pattern {
            background-image: linear-gradient(135deg, rgba(43, 108, 176, 0.03) 25%, transparent 25%, transparent 50%, rgba(43, 108, 176, 0.03) 50%, rgba(43, 108, 176, 0.03) 75%, transparent 75%, transparent);
            background-size: 60px 60px;
        }

        .alternating-band {
            position: relative;
        }

        .alternating-band:nth-of-type(even) {
            background: var(--color-bg-alt);
        }

        .alternating-band:nth-of-type(odd) {
            background: #fff;
        }

        .nav-channel-link {
            position: relative;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-channel-link:hover {
            color: var(--color-primary);
        }

        .nav-channel-link.active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .nav-channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 16px;
            right: 16px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary);
            transition: var(--transition-base);
        }

        .mobile-menu-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 40;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.open {
            display: block;
            opacity: 1;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            max-width: 85vw;
            background: #fff;
            z-index: 50;
            transform: translateX(100%);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: -4px 0 16px rgba(0, 0, 0, 0.08);
            overflow-y: auto;
            padding: 20px;
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .scrollbar-none {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }

            .container {
                padding: 0 16px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }

            .btn-lg {
                padding: 12px 24px;
            }

            .card {
                padding: 18px;
            }

            .price-card {
                padding: 24px 18px;
            }

            .price-card .price-tag {
                font-size: 2rem;
            }

            .news-item {
                flex-direction: column;
                gap: 8px;
            }

            .news-date {
                min-width: auto;
                align-self: flex-start;
                padding: 4px 10px;
                font-size: 0.75rem;
            }

            .hero-slant::after {
                height: 48px;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 36px 0;
            }

            .section-title {
                font-size: 1.2rem;
            }

            .container {
                padding: 0 14px;
            }

            .btn {
                padding: 8px 16px;
                font-size: 0.85rem;
                border-radius: var(--radius-sm);
            }

            .card {
                padding: 16px;
                border-radius: var(--radius-md);
            }

            .icon-box {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }
        /* roulang page: scores */

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-white {
            background: var(--color-surface);
        }
        .divider {
            border-top: 1px solid var(--color-border);
            width: 100%;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }
        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }
        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .card-hover-lift {
            transition: var(--transition-smooth);
        }
        .card-hover-lift:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 720px;
        }
        .font-numeric {
            font-family: var(--font-numeric);
        }
        .scrollbar-none {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }
        /* 导航样式 */
        .nav-channel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 5px;
            margin-right: 22px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-muted);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
            transition: var(--transition-base);
            position: relative;
        }
        .nav-channel-link:hover {
            color: var(--color-primary);
        }
        .nav-channel-link.active {
            color: var(--color-primary);
            font-weight: 600;
            border-bottom-color: var(--color-primary);
        }
        .header-brand-row {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .header-channel-row {
            background: #fff;
            border-bottom: 1px solid var(--color-border);
        }
        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .current {
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .breadcrumb .separator {
            color: #CBD5E1;
            font-size: 0.7rem;
        }
        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
        }
        .tag-cloud a:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        /* 分类入口卡片 */
        .category-entry-card {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
        }
        .category-entry-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .category-entry-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            flex-shrink: 0;
        }
        /* 订阅横幅 */
        .subscribe-banner {
            background: linear-gradient(135deg, #F0F6FF 0%, #E8F1FC 100%);
            border: 1px solid #D6E8FF;
            border-radius: var(--radius-xl);
            padding: 40px 36px;
        }
        /* 列表缩略图 */
        .list-thumb {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }
        /* 专题卡片 */
        .topic-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition-smooth);
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .topic-card .topic-body {
            padding: 22px 24px;
        }
        /* 移动端响应 */
        @media (max-width: 767px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .nav-channel-link {
                margin-right: 14px;
                font-size: 0.85rem;
                padding: 10px 2px;
            }
            .header-brand-row {
                padding: 10px 0;
            }
            .subscribe-banner {
                padding: 28px 20px;
            }
            .topic-card .topic-image {
                height: 160px;
            }
            .list-thumb {
                height: 140px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .topic-card .topic-image {
                height: 180px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-white {
            background: var(--color-surface);
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-darker) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }
        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }
        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .card-hover-lift {
            transition: var(--transition-smooth);
        }
        .card-hover-lift:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        .divider {
            border-top: 1px solid var(--color-border);
            width: 100%;
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-none {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .nav-channel-link {
            display: inline-flex;
            align-items: center;
            padding: 12px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: var(--transition-base);
            letter-spacing: 0.02em;
        }
        .nav-channel-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-channel-link.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }
        .nav-channel-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }
        .footer-link {
            color: var(--color-text-muted);
            transition: var(--transition-base);
            font-size: 0.875rem;
        }
        .footer-link:hover {
            color: var(--color-primary);
        }
        .tag-cloud-link {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 9999px;
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
            margin: 4px;
        }
        .tag-cloud-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
            transform: translateY(-1px);
        }
        .breadcrumb-link {
            color: var(--color-text-muted);
            transition: var(--transition-base);
            font-size: 0.9rem;
        }
        .breadcrumb-link:hover {
            color: var(--color-primary);
        }
        .breadcrumb-separator {
            color: #CBD5E1;
            margin: 0 8px;
            font-size: 0.85rem;
        }
        .category-card-list-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .category-card-list-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .category-card-list-item .thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            background: var(--color-bg-alt);
        }
        .stat-number {
            font-family: var(--font-numeric);
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .topic-card {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding: 28px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: var(--transition-smooth);
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }
        .category-entry-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
            font-weight: 600;
            color: var(--color-text);
        }
        .category-entry-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: var(--color-primary);
        }
        .category-entry-card .icon-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 4px 0;
            gap: 16px;
            text-align: left;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-top: 12px;
        }
        .faq-item .faq-icon {
            transition: transform 0.3s ease;
            color: var(--color-primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .data-stat-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .data-stat-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .data-stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        @media (max-width: 1024px) {
            .data-stat-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 16px;
            }
            .data-stat-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .category-card-list-item .thumb {
                height: 150px;
            }
            .topic-card img {
                height: 160px;
            }
            .nav-channel-link {
                padding: 10px 14px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .data-stat-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .data-stat-item {
                padding: 12px 14px;
            }
            .stat-number {
                font-size: 1.2rem;
            }
            .category-card-list-item .thumb {
                height: 130px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 64px 0;
        }

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

        .section-white {
            background: var(--color-surface);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }

        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .card-hover-lift {
            transition: var(--transition-smooth);
        }

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 680px;
            line-height: 1.7;
        }

        .divider {
            height: 1px;
            background: var(--color-border);
            width: 100%;
        }

        /* Header & Navigation */
        .header-brand {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }

        .nav-channel-link {
            display: inline-flex;
            align-items: center;
            padding: 12px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-bottom: 2px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav-channel-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-bottom-color: var(--color-primary);
        }

        .nav-channel-link.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
            background: transparent;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            padding: 16px 0;
        }

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

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

        .breadcrumb .separator {
            color: #CBD5E1;
            font-size: 0.7rem;
        }

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

        /* News list cards */
        .news-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .news-card-image {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .news-card:hover .news-card-image img {
            transform: scale(1.03);
        }

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

        .news-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .news-card-title a:hover {
            color: var(--color-primary);
        }

        .news-card-summary {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .news-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
        }

        .news-card-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition-base);
        }

        .read-more-link:hover {
            color: var(--color-primary-dark);
            gap: 6px;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-link {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .tag-link:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-1px);
        }

        /* Featured topic cards */
        .topic-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

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

        .topic-card-image {
            height: 200px;
            overflow: hidden;
        }

        .topic-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

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

        .topic-card-body {
            padding: 20px 24px;
        }

        .topic-card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .topic-card-summary {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* CTA banner */
        .cta-banner {
            background: var(--color-primary-light);
            border: 1px solid #D6E8FF;
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            text-align: center;
        }

        .cta-banner-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .cta-banner-text {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }

        /* Related category entry */
        .related-cat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            display: block;
        }

        .related-cat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--color-primary);
        }

        .related-cat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin: 0 auto 12px;
        }

        .related-cat-name {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
        }

        /* Footer */
        .footer {
            background: #F1F5F9;
            border-top: 1px solid #E2E8F0;
        }

        /* Scrollbar hide */
        .scrollbar-none {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 48px 0;
            }

            .news-card-image {
                height: 160px;
            }

            .topic-card-image {
                height: 170px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .news-card-image {
                height: 180px;
            }

            .news-card-body {
                padding: 16px 18px 20px;
            }

            .topic-card-image {
                height: 160px;
            }

            .cta-banner {
                padding: 28px 20px;
            }

            .cta-banner-title {
                font-size: 1.25rem;
            }
        }

        @media (max-width: 640px) {
            .header-brand {
                padding: 10px 0;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .news-card-image {
                height: 160px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 64px 0;
        }

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

        .section-white {
            background: var(--color-surface);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-darker) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }

        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .card-hover-lift {
            transition: var(--transition-smooth);
        }

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 720px;
        }

        /* Header / Navigation */
        .header-top {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.92);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .brand-logo-mark {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            font-family: var(--font-numeric);
            box-shadow: 0 2px 6px rgba(27, 102, 184, 0.18);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .header-actions .btn {
            font-size: 0.9rem;
            padding: 8px 18px;
        }

        .nav-channel {
            border-top: 1px solid var(--color-border);
            background: var(--color-surface);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        .nav-channel-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            min-width: max-content;
            padding: 0 4px;
        }

        .nav-channel-link {
            display: inline-flex;
            align-items: center;
            padding: 14px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-bottom: 2px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-channel-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-bottom-color: var(--color-primary-light);
        }

        .nav-channel-link.active {
            color: var(--color-primary);
            font-weight: 600;
            border-bottom-color: var(--color-primary);
            background: var(--color-primary-light);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            padding: 20px 0;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #CBD5E0;
            font-size: 0.8rem;
        }

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

        /* List cards */
        .list-card {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition-smooth);
        }

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

        .list-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #E2E8F0;
            position: relative;
        }

        .list-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

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

        .list-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .list-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .list-card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            letter-spacing: -0.005em;
        }

        .list-card-title a:hover {
            color: var(--color-primary);
        }

        .list-card-summary {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .list-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            padding-top: 10px;
            border-top: 1px solid #F1F5F9;
        }

        .list-card-date {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .list-card-views {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Tag cloud */
        .tag-cloud-item {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 9999px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* Topic card */
        .topic-card-horizontal {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .topic-card-horizontal:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .topic-card-image {
            aspect-ratio: 21/9;
            overflow: hidden;
            position: relative;
        }

        .topic-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .topic-card-horizontal:hover .topic-card-image img {
            transform: scale(1.04);
        }

        .topic-card-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* CTA banner */
        .cta-banner {
            background: var(--color-primary-light);
            border: 1px solid #D6E8FF;
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 14px;
        }

        .cta-banner .btn {
            padding: 13px 32px;
            font-size: 1rem;
        }

        /* Category entrance */
        .category-entrance-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            box-shadow: var(--shadow-md);
            transition: var(--transition-smooth);
            text-align: center;
        }

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

        .category-entrance-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
        }

        .category-entrance-card .btn-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition-base);
        }

        .category-entrance-card .btn-link:hover {
            color: var(--color-primary-dark);
            gap: 8px;
        }

        /* Footer */
        .footer-base {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding: 48px 0 32px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 40px;
            }
        }

        .footer-title {
            font-weight: 600;
            color: var(--color-text);
            font-size: 0.9rem;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .footer-links a {
            transition: var(--transition-base);
            display: inline-block;
        }

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

        .footer-subscribe {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .footer-subscribe input {
            flex: 1;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            font-size: 0.9rem;
            color: var(--color-text);
            transition: var(--transition-base);
        }

        .footer-subscribe input:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-color: var(--color-primary);
        }

        .footer-subscribe .btn {
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
        }

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0 28px;
            border-top: 1px solid #E2E8F0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
            }
        }

        .footer-bottom a {
            font-weight: 500;
            transition: var(--transition-base);
        }

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

        .footer-bottom .footer-tech-links {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .footer-bottom .footer-tech-links span {
            color: #CBD5E0;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .list-card-body {
                padding: 16px 18px 18px;
            }
            .list-card-title {
                font-size: 1rem;
            }
            .header-brand-row {
                padding: 10px 0;
            }
            .brand-link {
                font-size: 1.05rem;
            }
            .brand-logo-mark {
                width: 36px;
                height: 36px;
                font-size: 1.1rem;
            }
            .nav-channel-link {
                padding: 11px 14px;
                font-size: 0.88rem;
            }
            .cta-banner {
                padding: 28px 20px;
            }
            .cta-banner .btn {
                font-size: 0.95rem;
                padding: 11px 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .list-card-summary {
                font-size: 0.85rem;
            }
            .list-card-footer {
                font-size: 0.75rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .breadcrumb {
                font-size: 0.82rem;
                padding: 14px 0;
            }
            .footer-grid {
                gap: 24px;
                padding: 36px 0 24px;
            }
            .footer-subscribe {
                flex-direction: column;
                align-items: stretch;
            }
            .footer-subscribe .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                font-size: 0.78rem;
                align-items: flex-start;
            }
            .footer-bottom .footer-tech-links {
                flex-direction: column;
                gap: 6px;
                align-items: flex-start;
            }
            .tag-cloud-item {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .topic-card-body {
                padding: 16px 18px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #2B6CB0;
            --color-primary-dark: #1E5EA8;
            --color-primary-darker: #184F8C;
            --color-primary-light: #EBF4FF;
            --color-bg: #F8FAFC;
            --color-bg-alt: #F1F5F9;
            --color-surface: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #475569;
            --color-text-muted: #64748B;
            --color-border: #E2E8F0;
            --color-green: #27AE60;
            --color-orange: #F39C12;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(27, 102, 184, 0.08);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.2s ease;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-numeric: Inter, "Helvetica Neue", sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 72px 0;
        }

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

        .section-white {
            background: var(--color-surface);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-darker) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            background: #F1F5F9;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-green {
            background: #E8F8EF;
            color: var(--color-green);
        }

        .badge-orange {
            background: #FEF5E7;
            color: var(--color-orange);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
            transition: var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }

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

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: var(--color-primary-darker);
            border-color: var(--color-primary-darker);
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
        }

        .btn-secondary:active {
            background: #D6E8FF;
            transform: translateY(0);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .card-hover-lift {
            transition: var(--transition-smooth);
        }

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-top: 8px;
        }

        .divider {
            height: 1px;
            background: var(--color-border);
            border: none;
        }

        /* ===== 导航样式 ===== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 16px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            font-family: var(--font-numeric);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-action-link {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
        }

        .header-action-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .nav-channel-bar {
            border-top: 1px solid var(--color-border);
            background: var(--color-surface);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-channel-bar::-webkit-scrollbar {
            display: none;
        }

        .nav-channel-list {
            display: flex;
            align-items: center;
            gap: 4px;
            min-width: max-content;
            padding: 4px 0;
        }

        .nav-channel-link {
            display: inline-block;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: var(--transition-base);
            position: relative;
        }

        .nav-channel-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .nav-channel-link.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .nav-channel-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-separator {
            color: var(--color-border);
            font-size: 0.8rem;
        }

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

        /* ===== 分类列表卡片 ===== */
        .plan-list-card {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .plan-list-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .plan-list-card-thumb {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--color-bg-alt);
        }

        .plan-list-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .plan-list-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            flex-wrap: wrap;
        }

        .plan-list-card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
        }

        .plan-list-card-desc {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            flex: 1;
        }

        .plan-list-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        .plan-read-more {
            color: var(--color-primary);
            font-weight: 500;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .plan-read-more:hover {
            color: var(--color-primary-dark);
            gap: 8px;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud-link {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .tag-cloud-link:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        /* ===== 专题推荐 ===== */
        .topic-card {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .topic-card-thumb {
            width: 100%;
            aspect-ratio: 16/8;
            object-fit: cover;
            background: var(--color-bg-alt);
        }

        .topic-card-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .topic-card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .topic-card-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: var(--color-primary-light);
            border: 1px solid #D6E8FF;
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        /* ===== 相关分类入口 ===== */
        .category-entry-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            gap: 12px;
        }

        .category-entry-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--color-primary-light);
        }

        .category-entry-name {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
        }

        .category-entry-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
        }

        .footer-heading {
            font-weight: 600;
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        .footer-link {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

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

        .footer-form-group {
            display: flex;
            gap: 8px;
        }

        .footer-input {
            flex: 1;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .footer-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.12);
        }

        .footer-input::placeholder {
            color: var(--color-text-muted);
        }

        .footer-copyright {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .header-top {
                padding: 12px 0;
                flex-wrap: wrap;
                gap: 8px;
            }
            .brand-logo {
                font-size: 1.1rem;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
                border-radius: 6px;
            }
            .header-actions {
                gap: 4px;
            }
            .header-action-link {
                padding: 4px 8px;
                font-size: 0.8rem;
            }
            .nav-channel-link {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 1rem;
            }
            .plan-list-card-body {
                padding: 16px 18px 20px;
            }
            .cta-banner {
                padding: 28px 20px;
            }
            .category-entry-card {
                padding: 16px 18px;
            }
            .topic-card-body {
                padding: 16px 18px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 12px;
            }
            .section {
                padding: 32px 0;
            }
            .brand-logo {
                font-size: 1rem;
                gap: 6px;
            }
            .brand-icon {
                width: 26px;
                height: 26px;
                font-size: 0.85rem;
                border-radius: 5px;
            }
            .nav-channel-link {
                padding: 6px 10px;
                font-size: 0.78rem;
            }
            .plan-list-card-desc {
                font-size: 0.85rem;
            }
            .plan-list-card-title {
                font-size: 1rem;
            }
            .tag-cloud-link {
                padding: 5px 12px;
                font-size: 0.8rem;
            }
            .cta-banner {
                padding: 24px 16px;
                border-radius: var(--radius-lg);
            }
            .footer-form-group {
                flex-direction: column;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }

        /* 辅助样式 */
        .font-numeric {
            font-family: var(--font-numeric);
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .scrollbar-none {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }