/* roulang page: index */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1e40af;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-surface: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #475569;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-success: #10b981;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-dock: 0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.1), 0 8px 32px rgba(0, 0, 0, 0.08);
            --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-surface);
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

        /* 浮动 Dock 导航 */
        .dock-nav-wrapper {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 1140px;
        }

        .dock-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(226, 232, 240, 0.7);
            border-radius: var(--radius-xl);
            padding: 10px 20px;
            box-shadow: var(--shadow-dock);
            transition: all var(--transition-base);
        }

        .dock-nav .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-brand-dark);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .dock-nav .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }

        .dock-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .dock-nav .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .dock-nav .nav-links li a:hover {
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.06);
        }

        .dock-nav .nav-links li a.active {
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.1);
            font-weight: 600;
        }

        .dock-nav .nav-links li a .nav-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 7px;
            border-radius: 20px;
            margin-left: 6px;
            line-height: 1.3;
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.08);
            }
        }

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

        .dock-nav .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--color-brand);
            color: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .dock-nav .btn-nav-cta:hover {
            background: var(--color-brand-dark);
            box-shadow: var(--shadow-btn-hover, 0 4px 16px rgba(37, 99, 235, 0.35));
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--color-text);
            background: rgba(0, 0, 0, 0.03);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: rgba(0, 0, 0, 0.06);
        }

        .mobile-menu-panel {
            display: none;
            position: fixed;
            top: 80px;
            left: 16px;
            right: 16px;
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-dock);
            padding: 16px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
            border: 1px solid var(--color-border);
        }

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

        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.06);
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding-top: 100px;
            padding-bottom: 60px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(23, 37, 84, 0.75) 0%, rgba(30, 58, 138, 0.65) 40%, rgba(15, 23, 42, 0.8) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            padding: 6px 18px;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            animation: fadeInUp 0.6s ease-out;
        }

        .hero-badge .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #ef4444;
            animation: live-pulse 1.5s infinite;
        }

        @keyframes live-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-title {
            font-size: clamp(2.4rem, 5vw, 3.8rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin: 0 0 16px;
            animation: fadeInUp 0.6s ease-out 0.1s both;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, #f97316, #fb923c);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            margin: 0 0 32px;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.6s ease-out 0.2s both;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            animation: fadeInUp 0.6s ease-out 0.3s both;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
        }

        .btn-hero-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.5);
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition-fast);
            backdrop-filter: blur(6px);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        /* 板块通用 */
        .section {
            padding: 72px 24px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.08);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            margin: 0 0 12px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
        }

        /* 统计板块 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border);
        }

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

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-brand);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-number .plus {
            color: var(--color-accent);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-muted);
            font-weight: 500;
        }

        /* 分类入口 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            color: #fff;
        }

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

        .category-card .card-img {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(0deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.3) 50%, rgba(15, 23, 42, 0.05) 100%);
        }

        .category-card .card-body {
            position: relative;
            z-index: 2;
            padding: 28px;
            width: 100%;
        }

        .category-card .card-body .card-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
            border-radius: 50px;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
            color: #fff;
        }

        .category-card .card-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 6px;
            letter-spacing: -0.02em;
        }

        .category-card .card-body p {
            font-size: 0.9rem;
            opacity: 0.85;
            margin: 0 0 14px;
            line-height: 1.5;
        }

        .category-card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            transition: gap var(--transition-fast);
        }

        .category-card:hover .card-body .card-link {
            gap: 10px;
        }

        /* 特色服务 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            text-align: center;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--color-brand);
        }

        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-text);
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 资讯列表 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 16px;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 18px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            text-decoration: none;
            color: inherit;
            align-items: flex-start;
        }

        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .news-thumb {
            width: 100px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: #f1f5f9;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-info {
            flex: 1;
            min-width: 0;
        }

        .news-info .news-cat {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            color: var(--color-brand);
            background: rgba(37, 99, 235, 0.08);
            padding: 2px 10px;
            border-radius: 20px;
            margin-bottom: 6px;
        }

        .news-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 4px;
            line-height: 1.4;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-info .news-time {
            font-size: 0.75rem;
            color: var(--color-muted);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
            color: var(--color-muted);
            font-size: 0.95rem;
        }

        /* 为什么选我们 */
        .why-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            align-items: center;
        }

        .why-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .why-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .why-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .why-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .why-item .why-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(37, 99, 235, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-brand);
            flex-shrink: 0;
        }

        .why-item .why-text h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--color-text);
        }

        .why-item .why-text p {
            font-size: 0.88rem;
            color: var(--color-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text);
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-arrow {
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
            color: var(--color-muted);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.6;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 50%, #172554 100%);
            border-radius: var(--radius-2xl);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin: 0 24px;
            max-width: 1140px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1rem;
            opacity: 0.85;
            margin: 0 0 28px;
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: #fff;
            color: var(--color-brand-dark);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-section .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            background: #f8fafc;
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 24px 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            max-width: 1140px;
            margin: 0 auto;
        }

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo .fl-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.5;
            margin: 0 0 14px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            transition: all var(--transition-fast);
            font-size: 0.9rem;
        }

        .footer-social a:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            max-width: 1140px;
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .why-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                min-height: 240px;
            }
            .dock-nav .nav-links {
                gap: 2px;
            }
            .dock-nav .nav-links li a {
                padding: 6px 12px;
                font-size: 0.82rem;
            }
            .dock-nav .btn-nav-cta {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
        }

        @media (max-width: 768px) {
            .dock-nav .nav-links {
                display: none;
            }
            .dock-nav .nav-actions .btn-nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero-section {
                min-height: 70vh;
                padding-top: 90px;
            }
            .section {
                padding: 48px 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                min-height: 220px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 40px 24px;
                margin: 0 16px;
                border-radius: var(--radius-xl);
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .why-image img {
                min-height: 240px;
            }
        }

        @media (max-width: 520px) {
            .dock-nav-wrapper {
                top: 8px;
                width: calc(100% - 16px);
            }
            .dock-nav {
                padding: 8px 14px;
                border-radius: 16px;
            }
            .dock-nav .nav-logo {
                font-size: 1rem;
            }
            .dock-nav .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                justify-content: center;
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .mobile-menu-panel {
                top: 68px;
                left: 8px;
                right: 8px;
            }
        }

        /* 焦点可见样式 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--color-brand);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* 选择文本 */
        ::selection {
            background: rgba(37, 99, 235, 0.2);
            color: var(--color-text);
        }

/* roulang page: category1 */
:root {
            --color-brand: #2563eb;
            --color-brand-dark: #1d4ed8;
            --color-brand-light: #dbeafe;
            --color-accent: #f97316;
            --color-accent-light: #fff7ed;
            --color-text: #1e293b;
            --color-text-soft: #475569;
            --color-muted: #94a3b8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-border: #e2e8f0;
            --color-success: #10b981;
            --color-warm: #f59e0b;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-soft: 0 2px 16px rgba(0,0,0,0.06);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 6px 24px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.08), 0 12px 40px rgba(0,0,0,0.1);
            --shadow-dock: 0 2px 20px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(37,99,235,0.5);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        /* ===== DOCK NAVIGATION ===== */
        .dock-nav-wrapper {
            position: sticky;
            top: 16px;
            z-index: 1000;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 0 20px;
            pointer-events: none;
        }

        .dock-nav {
            pointer-events: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 50px;
            padding: 8px 12px 8px 20px;
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(226,232,240,0.7);
            max-width: 900px;
            width: 100%;
            transition: all var(--transition-smooth);
        }

        .dock-nav:hover {
            box-shadow: 0 4px 28px rgba(0,0,0,0.1), 0 0 0 1px rgba(0,0,0,0.06);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.125rem;
            color: #1e293b;
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--color-brand);
            transform: translateY(-1px);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-size: 0.95rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(37,99,235,0.3);
        }

        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            align-items: center;
            flex: 1;
            justify-content: center;
        }

        .nav-links li {
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.925rem;
            color: #475569;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: #1e293b;
            background: rgba(37,99,235,0.05);
            transform: translateY(-1px);
        }

        .nav-links a.active {
            color: #2563eb;
            background: #eff6ff;
            font-weight: 600;
            box-shadow: inset 0 0 0 2px rgba(37,99,235,0.15);
        }

        .nav-badge {
            font-size: 0.65rem;
            background: #f97316;
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 700;
            animation: badgePulse 2s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.08); }
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            transition: all var(--transition-bounce);
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(37,99,235,0.25);
        }

        .btn-nav-cta:hover {
            background: linear-gradient(135deg, #1d4ed8, #1b3a8a);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37,99,235,0.35);
            color: #fff;
        }

        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37,99,235,0.25);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #f1f5f9;
            color: #475569;
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: #e2e8f0;
            color: #1e293b;
        }

        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: calc(100% + 10px);
            left: 20px;
            right: 20px;
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: 0 10px 40px rgba(0,0,0,0.14);
            padding: 16px 20px;
            flex-direction: column;
            gap: 6px;
            z-index: 999;
            border: 1px solid #e2e8f0;
            animation: slideDown 0.25s ease;
        }

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

        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: #475569;
            transition: all var(--transition-fast);
            font-size: 0.95rem;
        }

        .mobile-menu-panel a:hover {
            background: #f1f5f9;
            color: #1e293b;
        }

        .mobile-menu-panel a.active {
            background: #eff6ff;
            color: #2563eb;
            font-weight: 600;
        }

        @keyframes slideDown {
            from { opacity: 0; transform: translateY(-12px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ===== PAGE HERO ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            border-radius: 0 0 40px 40px;
            overflow: hidden;
            margin-top: -80px;
            padding-top: 100px;
            padding-bottom: 60px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.75) 0%, rgba(30,41,59,0.65) 50%, rgba(15,23,42,0.8) 100%);
            z-index: 1;
        }

        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 0 24px;
        }

        /* ===== TAB / CHANNEL SWITCHER ===== */
        .channel-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            justify-content: center;
            padding: 4px;
            background: #f1f5f9;
            border-radius: 50px;
            width: fit-content;
            margin: 0 auto;
        }

        .channel-tab {
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: #64748b;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            background: transparent;
            border: none;
        }

        .channel-tab:hover {
            color: #1e293b;
            background: rgba(255,255,255,0.7);
        }

        .channel-tab.active-tab {
            background: #fff;
            color: #2563eb;
            font-weight: 600;
            box-shadow: 0 1px 4px rgba(0,0,0,0.08);
        }

        /* ===== CARDS ===== */
        .news-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid transparent;
        }

        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: #e2e8f0;
        }

        .news-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

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

        .news-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            color: #fff;
            z-index: 2;
        }

        .badge-hot {
            background: #ef4444;
        }

        .badge-new {
            background: #10b981;
        }

        .badge-live {
            background: #f97316;
            animation: liveDot 1.4s ease-in-out infinite;
        }

        @keyframes liveDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }

        .news-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .news-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #1e293b;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-excerpt {
            font-size: 0.875rem;
            color: #64748b;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-card-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 4px;
        }

        .news-tag {
            font-size: 0.72rem;
            padding: 4px 10px;
            border-radius: 20px;
            background: #f1f5f9;
            color: #64748b;
            font-weight: 500;
            transition: all var(--transition-fast);
        }

        .news-tag:hover {
            background: #e2e8f0;
            color: #475569;
        }

        /* ===== STAT BLOCK ===== */
        .stat-card {
            text-align: center;
            padding: 28px 20px;
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-smooth);
            border: 1px solid transparent;
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #e2e8f0;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: #2563eb;
            line-height: 1;
            letter-spacing: -0.02em;
        }

        /* ===== HORIZONTAL SCROLL ===== */
        .scroll-row-wrapper {
            position: relative;
            overflow: hidden;
        }

        .scroll-row {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 8px;
            scrollbar-width: thin;
            scrollbar-color: #cbd5e1 transparent;
        }

        .scroll-row::-webkit-scrollbar {
            height: 6px;
        }

        .scroll-row::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 10px;
        }

        .scroll-row::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 10px;
        }

        .scroll-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .scroll-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #e2e8f0;
        }

        .scroll-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

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

        .scroll-card-body {
            padding: 14px 16px 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e293b 100%);
            border-radius: 32px;
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(37,99,235,0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(249,115,22,0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-input-group {
            display: flex;
            max-width: 440px;
            margin: 0 auto;
            gap: 0;
            position: relative;
            z-index: 2;
        }

        .cta-input-group input {
            flex: 1;
            padding: 14px 20px;
            border-radius: 50px 0 0 50px;
            border: 2px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.08);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
        }

        .cta-input-group input::placeholder {
            color: rgba(255,255,255,0.5);
        }

        .cta-input-group input:focus {
            border-color: #60a5fa;
            background: rgba(255,255,255,0.14);
            box-shadow: 0 0 20px rgba(37,99,235,0.2);
        }

        .cta-input-group button {
            padding: 14px 28px;
            border-radius: 0 50px 50px 0;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: all var(--transition-bounce);
            box-shadow: 0 4px 16px rgba(37,99,235,0.3);
        }

        .cta-input-group button:hover {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            box-shadow: 0 6px 24px rgba(37,99,235,0.4);
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid #e2e8f0;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: #cbd5e1;
            box-shadow: var(--shadow-soft);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: #1e293b;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 1rem;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: #2563eb;
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: #64748b;
            font-size: 0.925rem;
            line-height: 1.7;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 56px 20px 28px;
            border-radius: 32px 32px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .fl-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-size: 0.85rem;
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.7;
            color: #94a3b8;
            margin: 0 0 16px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #94a3b8;
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }

        .footer-social a:hover {
            background: rgba(37,99,235,0.3);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin: 0 0 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.875rem;
            transition: all var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 32px;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.8rem;
            color: #64748b;
            max-width: 1100px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-links a {
                padding: 9px 14px;
                font-size: 0.85rem;
            }
            .btn-nav-cta {
                padding: 9px 16px;
                font-size: 0.82rem;
            }
            .category-hero {
                min-height: 300px;
                margin-top: -70px;
                padding-top: 90px;
                padding-bottom: 48px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .dock-nav {
                padding: 8px 16px;
                border-radius: 40px;
            }
            .nav-logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }
            .category-hero {
                min-height: 260px;
                margin-top: -60px;
                padding-top: 80px;
                border-radius: 0 0 28px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: 24px;
            }
            .cta-input-group {
                flex-direction: column;
                gap: 10px;
            }
            .cta-input-group input {
                border-radius: 50px;
            }
            .cta-input-group button {
                border-radius: 50px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .channel-tabs {
                gap: 3px;
                border-radius: 40px;
            }
            .channel-tab {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .scroll-card {
                flex: 0 0 260px;
            }
            .news-card-title {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .dock-nav {
                border-radius: 32px;
                padding: 6px 12px;
            }
            .nav-logo {
                font-size: 0.9rem;
                gap: 5px;
            }
            .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 0.7rem;
            }
            .mobile-menu-toggle {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .category-hero {
                min-height: 220px;
                margin-top: -50px;
                padding-top: 70px;
                border-radius: 0 0 22px 22px;
            }
            .category-hero-content h1 {
                font-size: 1.6rem;
            }
            .channel-tabs {
                flex-wrap: nowrap;
                overflow-x: auto;
                justify-content: flex-start;
                border-radius: 36px;
                width: 100%;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .channel-tabs::-webkit-scrollbar {
                display: none;
            }
            .channel-tab {
                flex-shrink: 0;
                padding: 7px 13px;
                font-size: 0.78rem;
            }
            .scroll-card {
                flex: 0 0 240px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1e40af;
            --color-primary-light: #3b82f6;
            --color-accent: #f97316;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-weak: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; border: none; background: none; font-family: inherit; }
        ul, ol { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 var(--spacing-md); }
        .container-wide { max-width: 1320px; margin: 0 auto; padding: 0 var(--spacing-md); }

        /* 浮动 Dock 导航 */
        .dock-nav-wrapper {
            position: sticky;
            top: 16px;
            z-index: 1000;
            display: flex;
            justify-content: center;
            pointer-events: none;
            padding: 0 var(--spacing-md);
        }
        .dock-nav {
            pointer-events: auto;
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.7);
            border-radius: var(--radius-xl);
            padding: 12px 28px;
            box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.04);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .dock-nav:hover { box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0,0,0,0.06); }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color 0.2s ease;
        }
        .nav-logo:hover { color: var(--color-primary-light); }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            color: #fff;
            font-size: 1rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            position: relative;
            padding: 9px 18px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--color-primary); background: #eff6ff; }
        .nav-links a.active {
            color: #ffffff;
            background: linear-gradient(135deg, #1e40af, #2563eb);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(30,64,175,0.3);
        }
        .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            background: #f97316;
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 6px;
            font-weight: 600;
            vertical-align: middle;
            animation: badgePulse 2s ease-in-out infinite;
        }
        @keyframes badgePulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 28px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #f97316, #ea580c);
            white-space: nowrap;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(249,115,22,0.35);
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(249,115,22,0.45);
        }
        .mobile-menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: #f1f5f9;
            color: var(--color-text);
            font-size: 1.25rem;
            transition: background 0.2s ease;
        }
        .mobile-menu-toggle:hover { background: #e2e8f0; }
        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: calc(100% + 12px);
            left: var(--spacing-md);
            right: var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: var(--spacing-md);
            flex-direction: column;
            gap: 4px;
            z-index: 999;
            border: 1px solid var(--color-border-light);
            pointer-events: auto;
        }
        .mobile-menu-panel.active { display: flex; }
        .mobile-menu-panel a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all 0.2s ease;
        }
        .mobile-menu-panel a:hover { background: #f8fafc; color: var(--color-primary); }
        .mobile-menu-panel a.active { background: #eff6ff; color: var(--color-primary); font-weight: 600; }

        @media (max-width: 1024px) {
            .nav-links a { padding: 8px 14px; font-size: 0.9rem; }
            .dock-nav { gap: var(--spacing-sm); padding: 10px 20px; }
            .nav-logo { font-size: 1.05rem; }
            .btn-nav-cta { padding: 8px 16px; font-size: 0.85rem; }
        }
        @media (max-width: 768px) {
            .dock-nav-wrapper { top: 8px; }
            .dock-nav { padding: 8px 16px; gap: 8px; border-radius: var(--radius-lg); }
            .nav-links { display: none; }
            .btn-nav-cta { display: none; }
            .mobile-menu-toggle { display: flex; }
            .nav-logo { font-size: 0.95rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .dock-nav-wrapper { top: 6px; padding: 0 8px; }
            .dock-nav { padding: 6px 12px; border-radius: var(--radius-md); }
            .nav-logo { font-size: 0.85rem; gap: 6px; }
            .logo-icon { width: 28px; height: 28px; font-size: 0.75rem; }
            .mobile-menu-toggle { width: 36px; height: 36px; font-size: 1.1rem; }
        }

        /* Banner */
        .article-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: -80px;
            padding-top: 140px;
            padding-bottom: 60px;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.6) 100%);
            z-index: 1;
        }
        .article-banner-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumb { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 0.9rem; color: rgba(255,255,255,0.8); margin-bottom: var(--spacing-md); }
        .breadcrumb a { color: rgba(255,255,255,0.9); transition: color 0.2s ease; }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .sep { color: rgba(255,255,255,0.5); font-size: 0.75rem; }
        .breadcrumb .current { color: #fff; font-weight: 500; }

        @media (max-width: 768px) {
            .article-banner { min-height: 260px; padding-top: 120px; padding-bottom: 40px; margin-top: -60px; }
            .breadcrumb { font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-banner { min-height: 220px; padding-top: 100px; padding-bottom: 30px; margin-top: -50px; }
        }

        /* 特色图 */
        .featured-image-wrap {
            margin-top: -50px;
            position: relative;
            z-index: 3;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 6px solid #fff;
        }
        .featured-image-wrap img { width: 100%; display: block; border-radius: var(--radius-md); }
        @media (max-width: 768px) {
            .featured-image-wrap { margin-top: -30px; border-width: 4px; border-radius: var(--radius-md); }
        }
        @media (max-width: 520px) {
            .featured-image-wrap { margin-top: -20px; border-width: 3px; border-radius: var(--radius-sm); }
        }

        /* 文章正文 */
        .article-body {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .article-content { line-height: 1.9; color: var(--color-text); }
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--color-border-light);
        }
        .article-content h3 { font-size: 1.3rem; font-weight: 600; margin: 1.6rem 0 0.8rem; color: var(--color-text); }
        .article-content p { margin-bottom: 1.2rem; }
        .article-content img { border-radius: var(--radius-md); margin: 1.5rem 0; max-width: 100%; height: auto; }
        .article-content ul, .article-content ol { margin: 1rem 0 1.5rem 1.5rem; }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 0.5rem; }
        .article-content blockquote {
            border-left: 4px solid var(--color-primary-light);
            background: #f8fafc;
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--color-text-soft);
            font-style: italic;
        }
        .article-content a { color: var(--color-primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--color-primary); }
        .article-content code { background: #f1f5f9; padding: 2px 8px; border-radius: 4px; font-size: 0.9em; }
        .article-content pre { background: #1e293b; color: #e2e8f0; padding: 1.5rem; border-radius: var(--radius-sm); overflow-x: auto; margin: 1.5rem 0; line-height: 1.6; }
        .article-content pre code { background: none; padding: 0; color: inherit; }

        @media (max-width: 768px) {
            .article-body { padding: var(--spacing-md) var(--spacing-sm); border-radius: var(--radius-md); }
            .article-content h2 { font-size: 1.35rem; }
            .article-content h3 { font-size: 1.15rem; }
            .article-content { font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .article-body { padding: var(--spacing-sm); border-radius: var(--radius-sm); }
            .article-content h2 { font-size: 1.2rem; }
            .article-content { font-size: 0.9rem; line-height: 1.75; }
        }

        /* 元信息 */
        .meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            padding: var(--spacing-md) 0;
            border-bottom: 1px solid var(--color-border-light);
            margin-bottom: var(--spacing-lg);
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: var(--color-text-soft);
        }
        .meta-item i { color: var(--color-primary-light); font-size: 0.95rem; }
        .meta-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: #eff6ff;
            color: var(--color-primary);
        }
        @media (max-width: 520px) {
            .meta-row { gap: 12px; }
            .meta-item { font-size: 0.8rem; }
        }

        /* 分享区 */
        .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border-light);
            flex-wrap: wrap;
        }
        .share-bar span { font-size: 0.9rem; color: var(--color-text-soft); font-weight: 500; }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            font-size: 1rem;
            transition: all 0.25s ease;
            color: #fff;
        }
        .share-btn.sb-weibo { background: #e6162d; }
        .share-btn.sb-wechat { background: #07c160; }
        .share-btn.sb-twitter { background: #1da1f2; }
        .share-btn.sb-link { background: #64748b; }
        .share-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

        /* 相关文章 */
        .section-related { padding: var(--spacing-2xl) 0; }
        .section-header { text-align: center; margin-bottom: var(--spacing-xl); }
        .section-header h2 { font-size: 2rem; font-weight: 700; color: var(--color-text); }
        .section-header p { color: var(--color-text-soft); margin-top: 0.5rem; font-size: 1.05rem; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--color-border); }
        .related-card-img { height: 200px; overflow: hidden; }
        .related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .related-card:hover .related-card-img img { transform: scale(1.06); }
        .related-card-body { padding: var(--spacing-md); flex: 1; display: flex; flex-direction: column; }
        .related-card-body h3 { font-size: 1.05rem; font-weight: 600; line-height: 1.5; margin-bottom: 0.5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card-body h3 a { color: var(--color-text); transition: color 0.2s ease; }
        .related-card-body h3 a:hover { color: var(--color-primary); }
        .related-card-body .rc-meta { font-size: 0.8rem; color: var(--color-text-weak); margin-top: auto; padding-top: 0.5rem; }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
        }
        @media (max-width: 768px) {
            .section-header h2 { font-size: 1.6rem; }
            .related-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .related-card-img { height: 180px; }
        }
        @media (max-width: 520px) {
            .section-header h2 { font-size: 1.35rem; }
            .related-card-img { height: 160px; }
            .related-card-body h3 { font-size: 0.95rem; }
        }

        /* CTA */
        .section-cta {
            position: relative;
            padding: var(--spacing-2xl) 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-radius: var(--radius-xl);
            margin: 0 var(--spacing-md) var(--spacing-2xl);
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30,64,175,0.92) 0%, rgba(15,23,42,0.85) 100%);
            z-index: 1;
        }
        .cta-content { position: relative; z-index: 2; text-align: center; color: #fff; max-width: 700px; margin: 0 auto; padding: 0 var(--spacing-md); }
        .cta-content h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
        .cta-content p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 1.5rem; line-height: 1.7; }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 32px;
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #f97316, #ea580c);
            box-shadow: 0 8px 28px rgba(249,115,22,0.5);
            transition: all 0.3s ease;
        }
        .btn-cta-lg:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(249,115,22,0.6); }
        @media (max-width: 768px) {
            .section-cta { margin: 0 var(--spacing-sm) var(--spacing-lg); border-radius: var(--radius-lg); padding: var(--spacing-xl) 0; }
            .cta-content h2 { font-size: 1.5rem; }
            .cta-content p { font-size: 1rem; }
            .btn-cta-lg { padding: 12px 28px; font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .section-cta { margin: 0 8px var(--spacing-md); border-radius: var(--radius-md); padding: var(--spacing-lg) 0; }
            .cta-content h2 { font-size: 1.3rem; }
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-top: var(--spacing-xs); opacity: 0.8; }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
        }
        .fl-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #3b82f6, #1e40af);
            color: #fff;
            font-size: 1rem;
        }
        .footer-social { display: flex; gap: 12px; margin-top: var(--spacing-md); }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: #cbd5e1;
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }
        .footer-social a:hover { background: var(--color-primary-light); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { color: #fff; font-weight: 600; font-size: 0.95rem; margin-bottom: var(--spacing-sm); }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li a { font-size: 0.9rem; color: #94a3b8; transition: color 0.2s ease; }
        .footer-col ul li a:hover { color: #fff; }
        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-lg);
            margin-top: var(--spacing-lg);
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
            color: #64748b;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .footer-brand { grid-column: auto; }
            .site-footer { padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-md); }
        }

        /* 不存在的文章状态 */
        .not-found-state {
            text-align: center;
            padding: var(--spacing-xl) 0;
        }
        .not-found-state .nf-icon {
            font-size: 4rem;
            color: var(--color-text-weak);
            margin-bottom: var(--spacing-md);
        }
        .not-found-state h3 { font-size: 1.4rem; color: var(--color-text); margin-bottom: 0.5rem; }
        .not-found-state p { color: var(--color-text-soft); margin-bottom: var(--spacing-md); }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(30,64,175,0.3);
        }
        .btn-back:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,64,175,0.4); }

        .section-main { padding: var(--spacing-lg) 0 var(--spacing-2xl); }

/* roulang page: category2 */
:root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-accent: #f97316;
            --color-accent-dark: #ea580c;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --radius-3xl: 2rem;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 36px rgba(0, 0, 0, 0.09);
            --shadow-xl: 0 14px 50px rgba(0, 0, 0, 0.11);
            --transition-fast: 180ms ease;
            --transition-base: 250ms ease;
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

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

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ========== DOCK 导航 ========== */
        .dock-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding-top: 16px;
            padding-left: 16px;
            padding-right: 16px;
            pointer-events: none;
            transition: all var(--transition-base);
        }

        .dock-nav-wrapper.scrolled {
            padding-top: 8px;
        }

        .dock-nav {
            pointer-events: auto;
            max-width: 920px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.25rem;
            padding: 0.7rem 1.6rem;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: var(--radius-3xl);
            box-shadow: var(--shadow-lg), 0 1px 4px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(226, 232, 240, 0.7);
            transition: all var(--transition-base);
        }

        .dock-nav-wrapper.scrolled .dock-nav {
            box-shadow: var(--shadow-xl), 0 1px 3px rgba(0, 0, 0, 0.04);
            border-color: rgba(226, 232, 240, 0.9);
            border-radius: var(--radius-2xl);
            padding: 0.55rem 1.4rem;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--color-text);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

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

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
            transition: all var(--transition-fast);
        }

        .nav-logo:hover .logo-icon {
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
            transform: scale(1.04);
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.3rem;
        }

        .nav-links li {
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-muted);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--color-text);
            background: rgba(37, 99, 235, 0.05);
        }

        .nav-links a.active {
            color: var(--color-primary);
            background: rgba(37, 99, 235, 0.08);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.12);
        }

        .nav-badge {
            font-size: 0.65rem;
            background: #f97316;
            color: #fff;
            padding: 2px 8px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.02em;
            animation: badgePulse 2s ease-in-out infinite;
        }

        @keyframes badgePulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.75;
            }
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.2rem;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
            background: var(--color-primary);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
        }

        .btn-nav-cta:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
            transform: translateY(-1px);
        }

        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.35rem;
            color: var(--color-text);
            padding: 0.4rem 0.5rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .mobile-menu-toggle:hover {
            background: rgba(37, 99, 235, 0.06);
            color: var(--color-primary);
        }

        .mobile-menu-panel {
            display: none;
            pointer-events: auto;
            position: absolute;
            top: calc(100% + 8px);
            left: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--color-border);
            padding: 1rem 0.6rem;
            flex-direction: column;
            gap: 0.15rem;
            z-index: 999;
            animation: slideDown 0.25s ease-out;
        }

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

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-menu-panel a {
            display: block;
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-lg);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--color-primary);
            background: rgba(37, 99, 235, 0.06);
        }

        @media (max-width: 820px) {
            .nav-links {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .dock-nav {
                padding: 0.6rem 1.1rem;
                border-radius: var(--radius-2xl);
            }
            .dock-nav-wrapper {
                padding-top: 10px;
                padding-left: 10px;
                padding-right: 10px;
            }
        }

        @media (max-width: 520px) {
            .dock-nav {
                padding: 0.5rem 1rem;
                border-radius: var(--radius-xl);
                gap: 0.5rem;
            }
            .nav-logo {
                font-size: 1rem;
                gap: 0.35rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
                border-radius: var(--radius-md);
            }
            .mobile-menu-panel {
                left: 10px;
                right: 10px;
                border-radius: var(--radius-xl);
            }
        }

        /* ========== 分类 Banner ========== */
        .cat-banner {
            position: relative;
            padding: 7rem 0 4rem;
            background: linear-gradient(180deg, #f0f4ff 0%, #f8fafc 40%, #ffffff 100%);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .cat-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 650px;
            height: 650px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cat-banner::after {
            content: '';
            position: absolute;
            bottom: -25%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cat-banner-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .cat-banner-text {
            flex: 1;
            min-width: 280px;
        }

        .cat-banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.08);
            color: var(--color-primary);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .cat-banner-badge i {
            font-size: 0.7rem;
        }

        .cat-banner-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text);
            margin: 0 0 1rem;
            letter-spacing: -0.02em;
        }

        .cat-banner-text h1 span {
            color: var(--color-primary);
            position: relative;
        }

        .cat-banner-text h1 span::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 8px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 4px;
            z-index: -1;
        }

        .cat-banner-text p {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            margin: 0 0 1.5rem;
            line-height: 1.8;
            max-width: 540px;
        }

        .cat-banner-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .cat-banner-stat {
            text-align: left;
        }

        .cat-banner-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }

        .cat-banner-stat .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 0.25rem;
        }

        .cat-banner-image {
            flex: 0 0 380px;
            max-width: 420px;
            border-radius: var(--radius-3xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            position: relative;
        }

        .cat-banner-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            border-radius: var(--radius-3xl);
        }

        .cat-banner-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-3xl);
            box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.5);
            pointer-events: none;
        }

        @media (max-width: 900px) {
            .cat-banner {
                padding: 6rem 0 3rem;
                min-height: auto;
            }
            .cat-banner-content {
                flex-direction: column;
                text-align: center;
                gap: 2rem;
            }
            .cat-banner-text h1 {
                font-size: 2.2rem;
            }
            .cat-banner-text p {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .cat-banner-stats {
                justify-content: center;
            }
            .cat-banner-image {
                flex: 0 0 auto;
                max-width: 320px;
                width: 100%;
                margin: 0 auto;
            }
        }

        @media (max-width: 520px) {
            .cat-banner-text h1 {
                font-size: 1.7rem;
            }
            .cat-banner-text p {
                font-size: 0.95rem;
            }
            .cat-banner-image {
                max-width: 260px;
            }
            .cat-banner-stats {
                gap: 1.2rem;
            }
            .cat-banner-stat .stat-num {
                font-size: 1.5rem;
            }
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 4rem 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-header .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.35rem 0.9rem;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.07);
            color: var(--color-primary);
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.6rem;
            letter-spacing: -0.015em;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        /* ========== 教学特色卡片 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-2xl);
            padding: 1.8rem 1.4rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #2563eb, #60a5fa);
            opacity: 0;
            transition: opacity var(--transition-base);
            border-radius: 0 0 2px 2px;
        }

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

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

        .feature-icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-xl);
            background: rgba(37, 99, 235, 0.07);
            color: var(--color-primary);
            font-size: 1.4rem;
            margin-bottom: 1rem;
            transition: all var(--transition-base);
        }

        .feature-card:hover .feature-icon-wrap {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 8px 22px rgba(37, 99, 235, 0.3);
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.5rem;
        }

        .feature-card p {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

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

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .feature-card {
                padding: 1.4rem 1.2rem;
            }
        }

        /* ========== 课程内容卡片网格 ========== */
        .courses-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .course-card {
            background: #fff;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

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

        .course-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

        .course-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .course-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 0.3rem 0.75rem;
            border-radius: var(--radius-full);
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.94);
            color: var(--color-text);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            letter-spacing: 0.02em;
            z-index: 2;
        }

        .course-card-body {
            padding: 1.2rem 1.3rem 1.4rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .course-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.4rem;
            line-height: 1.4;
        }

        .course-card-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0 0 1rem;
            line-height: 1.6;
            flex: 1;
        }

        .course-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--color-text-light);
            padding-top: 0.8rem;
            border-top: 1px solid var(--color-border-light);
        }

        .course-card-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

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

        @media (max-width: 600px) {
            .courses-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }

        /* ========== 学习路径 ========== */
        .pathway-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .pathway-list::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, #2563eb 0%, #93c5fd 60%, #e2e8f0 100%);
            border-radius: 3px;
            z-index: 0;
        }

        .pathway-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            position: relative;
            z-index: 1;
        }

        .pathway-num {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--color-primary);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.15);
            transition: all var(--transition-base);
        }

        .pathway-item:hover .pathway-num {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
            transform: scale(1.06);
        }

        .pathway-content {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.3rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            flex: 1;
            transition: all var(--transition-base);
        }

        .pathway-item:hover .pathway-content {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .pathway-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.3rem;
        }

        .pathway-content p {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 600px) {
            .pathway-list::before {
                left: 22px;
            }
            .pathway-num {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .pathway-item {
                gap: 1rem;
            }
            .pathway-content {
                padding: 1rem 1.1rem;
            }
            .pathway-content h4 {
                font-size: 0.95rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

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

        .faq-item:hover {
            border-color: #cbd5e1;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            user-select: none;
            transition: color var(--transition-fast);
        }

        .faq-question i {
            font-size: 0.8rem;
            color: var(--color-text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

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

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }

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

        .faq-answer-inner {
            padding: 0 1.4rem 1.2rem;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, #1e3a8a 0%, #1d4ed8 40%, #2563eb 100%);
            border-radius: var(--radius-3xl);
            padding: 3.5rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin: 2rem 0 3rem;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -25%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section>* {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin: 0 0 0.8rem;
            letter-spacing: -0.015em;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 550px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
        }

        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.9rem 2.2rem;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 700;
            background: #ffffff;
            color: var(--color-primary);
            transition: all var(--transition-base);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            border: none;
            cursor: pointer;
        }

        .btn-cta-lg:hover {
            background: #f0f4ff;
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
        }

        .btn-cta-lg:active {
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-2xl);
                margin: 1.5rem 0 2rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn-cta-lg {
                padding: 0.75rem 1.6rem;
                font-size: 0.9rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--color-border-light);
            padding: 3rem 0 1.5rem;
            margin-top: 1rem;
        }

        .footer-grid {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0.8rem 0 1rem;
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--color-text);
        }

        .fl-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-size: 0.9rem;
        }

        .footer-social {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: #f1f5f9;
            color: var(--color-text-muted);
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.9rem;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 0.45rem;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            max-width: 1240px;
            margin: 2rem auto 0;
            padding: 1.2rem 1.5rem 0;
            border-top: 1px solid var(--color-border-light);
            text-align: center;
            font-size: 0.8rem;
            color: var(--color-text-light);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .footer-brand {
                grid-column: auto;
            }
            .site-footer {
                padding: 2rem 0 1rem;
            }
        }

        /* ========== 全局过渡 ========== */
        .fade-in {
            animation: fadeIn 0.6s ease-out forwards;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }