/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1d4ed8;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #8b5cf6;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        p {
            margin-bottom: 0.5rem;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a i {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-main a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-main a:hover i {
            color: var(--primary);
        }
        .nav-main a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-main a.active i {
            color: var(--primary);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: var(--bg-alt);
            transition: all var(--transition);
            font-size: 16px;
        }
        .btn-search:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
        }
        .btn-primary i {
            font-size: 14px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            color: var(--text-secondary);
            background: transparent;
            transition: all var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
            transform: translateY(-1px);
        }
        .btn-outline i {
            font-size: 14px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
        }
        .btn-secondary:hover {
            background: #d97706;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 17px;
            border-radius: var(--radius);
        }

        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-size: 22px;
            background: var(--bg-alt);
            transition: all var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-bg) 0%, #f0f4ff 50%, #faf5ff 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-card-stack {
            width: 100%;
            max-width: 480px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .hero-card-stack .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-bottom: 24px;
        }
        .hero-card-stack .stat-item {
            text-align: center;
            padding: 12px 8px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
        }
        .hero-card-stack .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-card-stack .stat-item .label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .hero-card-stack .trend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .hero-card-stack .trend-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .hero-card-stack .trend-item:hover {
            background: var(--primary-bg);
            transform: translateX(4px);
        }
        .hero-card-stack .trend-item .rank {
            font-weight: 800;
            font-size: 18px;
            color: var(--text-muted);
            width: 28px;
            text-align: center;
        }
        .hero-card-stack .trend-item .rank.top {
            color: var(--secondary);
        }
        .hero-card-stack .trend-item .info {
            flex: 1;
        }
        .hero-card-stack .trend-item .info .name {
            font-weight: 600;
            font-size: 15px;
        }
        .hero-card-stack .trend-item .info .desc {
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-card-stack .trend-item .badge {
            background: var(--primary-bg);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .tagline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 24px;
            color: #fff;
        }
        .category-card .icon.guide {
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
        }
        .category-card .icon.review {
            background: linear-gradient(135deg, #f59e0b, #ef4444);
        }
        .category-card .icon.community {
            background: linear-gradient(135deg, #10b981, #3b82f6);
        }
        .category-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        .category-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
        }
        .category-card .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--border);
            min-width: 40px;
            line-height: 1;
            margin-top: 2px;
            font-feature-settings: "tnum";
        }
        .news-item .num.top1 {
            color: var(--secondary);
        }
        .news-item .num.top2 {
            color: #94a3b8;
        }
        .news-item .num.top3 {
            color: #d97706;
        }
        .news-item .content {
            flex: 1;
            min-width: 0;
        }
        .news-item .content .meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .news-item .content .meta .tag {
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 50px;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .news-item .content .meta .tag.guide {
            background: #ede9fe;
            color: #7c3aed;
        }
        .news-item .content .meta .tag.review {
            background: #fef3c7;
            color: #d97706;
        }
        .news-item .content .meta .tag.community {
            background: #d1fae5;
            color: #059669;
        }
        .news-item .content .meta .date {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-item .content h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-item .content h4 a {
            color: var(--text);
        }
        .news-item .content h4 a:hover {
            color: var(--primary);
        }
        .news-item .content .summary {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 36px;
            margin-bottom: 12px;
            display: block;
            color: var(--border);
        }

        /* ===== 服务流程 / 数据 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
            font-size: 18px;
            background: var(--primary-bg);
            color: var(--primary);
            transition: all var(--transition);
        }
        .step-card:hover .step-num {
            background: var(--primary);
            color: #fff;
        }
        .step-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .step-arrow {
            display: none;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .stat-card .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card .num .suffix {
            font-size: 20px;
            font-weight: 600;
        }
        .stat-card .label {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .stat-card .icon-bg {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 20px;
            color: #fff;
        }
        .stat-card .icon-bg.blue {
            background: linear-gradient(135deg, #3b82f6, #60a5fa);
        }
        .stat-card .icon-bg.amber {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
        }
        .stat-card .icon-bg.purple {
            background: linear-gradient(135deg, #8b5cf6, #a78bfa);
        }
        .stat-card .icon-bg.green {
            background: linear-gradient(135deg, #10b981, #34d399);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            cursor: pointer;
            transition: background var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            font-size: 16px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--accent) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-primary:hover {
            background: var(--bg-alt);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }
        .cta-section .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            color: #fff;
            background: transparent;
            transition: all var(--transition);
        }
        .cta-section .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--text);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
            font-size: 20px;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand .logo i {
            color: #60a5fa;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom .social-links {
            display: flex;
            gap: 12px;
        }
        .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.45);
            font-size: 15px;
            transition: all var(--transition);
        }
        .footer-bottom .social-links a:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #fef2f2;
            color: #dc2626;
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-hot i {
            font-size: 10px;
        }
        .badge-new {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #d1fae5;
            color: #059669;
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content h1 {
                font-size: 38px;
            }
            .hero-card-stack {
                max-width: 100%;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .site-header {
                height: var(--header-height);
            }
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 16px;
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.active {
                background: var(--primary-bg);
                color: var(--primary);
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-cta .btn-primary span {
                display: none;
            }
            .nav-cta .btn-primary {
                padding: 10px 14px;
            }
            .hero {
                padding: 48px 0 40px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 16px;
            }
            .hero-card-stack {
                padding: 20px 16px;
            }
            .hero-card-stack .stats-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
            .hero-card-stack .stat-item .num {
                font-size: 22px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 26px;
            }
            .section-title p {
                font-size: 15px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .news-item .num {
                font-size: 22px;
                min-width: 30px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 24px 12px;
            }
            .stat-card .num {
                font-size: 28px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                padding: 24px 20px;
            }
            .news-item .content h4 {
                font-size: 15px;
            }
            .section-title h2 {
                font-size: 22px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #e55a2b;
            --primary-light: #ff8a5c;
            --primary-bg: #fff4ee;
            --secondary: #1E2A78;
            --secondary-light: #2d3fa0;
            --accent: #F7C948;
            --bg: #ffffff;
            --bg-alt: #f8f9fc;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #5a5a7a;
            --text-muted: #8e8ea0;
            --border: #e8e8f0;
            --border-light: #f0f0f5;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea {
            font: inherit;
            color: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 28px;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0 8px;
        }
        .nav-main::-webkit-scrollbar {
            display: none;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .nav-main a i {
            font-size: 16px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-main a:hover {
            color: var(--text);
            background: var(--bg-alt);
            border-color: var(--border);
        }
        .nav-main a:hover i {
            color: var(--primary);
        }
        .nav-main a.active {
            color: #fff;
            background: var(--secondary);
            border-color: var(--secondary);
            box-shadow: 0 4px 12px rgba(30, 42, 120, 0.25);
        }
        .nav-main a.active i {
            color: #fff;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .header-cta .btn-primary {
            padding: 10px 24px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-cta .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
        }
        .nav-toggle {
            display: none;
            flex-shrink: 0;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text);
            padding: 4px 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero ===== */
        .hero-guide {
            background: linear-gradient(135deg, #1E2A78 0%, #2d3fa0 40%, #FF6B35 100%);
            padding: 80px 0 60px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .hero-guide::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.3;
        }
        .hero-guide .container {
            position: relative;
            z-index: 1;
        }
        .hero-guide-content {
            max-width: 720px;
        }
        .hero-guide-content .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 500;
            color: #fff;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-guide-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero-guide-content h1 i {
            color: var(--accent);
        }
        .hero-guide-content p {
            font-size: 18px;
            opacity: 0.9;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 600px;
        }
        .hero-guide-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-guide-actions .btn-primary {
            padding: 14px 32px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 600;
            background: var(--accent);
            color: var(--secondary);
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-guide-actions .btn-primary:hover {
            background: #ffe070;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(247, 201, 72, 0.4);
        }
        .hero-guide-actions .btn-outline {
            padding: 14px 32px;
            border-radius: 100px;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-guide-actions .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .hero-guide-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-guide-stats .stat-item {
            text-align: center;
        }
        .hero-guide-stats .stat-item .num {
            font-size: 32px;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .hero-guide-stats .stat-item .label {
            font-size: 14px;
            opacity: 0.75;
            margin-top: 4px;
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .section-header h2 i {
            color: var(--primary);
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-light);
            margin-top: 12px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-header .tagline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ===== Guide 分类卡片网格 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 18px;
            background: var(--secondary);
        }
        .guide-card:nth-child(2) .icon-wrap {
            background: var(--primary);
        }
        .guide-card:nth-child(3) .icon-wrap {
            background: var(--accent);
            color: var(--secondary);
        }
        .guide-card:nth-child(4) .icon-wrap {
            background: #2ecc71;
        }
        .guide-card:nth-child(5) .icon-wrap {
            background: #e74c3c;
        }
        .guide-card:nth-child(6) .icon-wrap {
            background: #9b59b6;
        }
        .guide-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .guide-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .guide-card .card-tags span {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .guide-card .card-tags span:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary);
        }
        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            margin-top: 12px;
            transition: gap var(--transition);
        }
        .guide-card .card-link:hover {
            gap: 12px;
            color: var(--primary);
        }

        /* ===== 攻略列表 ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .guide-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 20px 24px;
            transition: all var(--transition);
        }
        .guide-list-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .guide-list-item .rank {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: var(--text-muted);
            border: 1px solid var(--border);
        }
        .guide-list-item:nth-child(1) .rank {
            background: var(--accent);
            color: var(--secondary);
            border-color: var(--accent);
        }
        .guide-list-item:nth-child(2) .rank {
            background: #e8e8f0;
            color: var(--text-light);
            border-color: #ddd;
        }
        .guide-list-item:nth-child(3) .rank {
            background: #f5e6d3;
            color: #b87333;
            border-color: #e0c9b0;
        }
        .guide-list-item .info {
            flex: 1;
            min-width: 0;
        }
        .guide-list-item .info h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .guide-list-item .info p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-list-item .meta {
            flex-shrink: 0;
            text-align: right;
            min-width: 100px;
        }
        .guide-list-item .meta .badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-bg);
            color: var(--primary);
        }
        .guide-list-item .meta .date {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== 攻略流程/步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 48px;
            font-weight: 800;
            color: var(--border);
            line-height: 1;
            transition: color var(--transition);
        }
        .step-card:hover::before {
            color: var(--primary-light);
        }
        .step-card .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            margin: 0 auto 18px;
            transition: all var(--transition);
        }
        .step-card:hover .step-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #2d3fa0 100%);
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(255, 107, 53, 0.2) 0%, transparent 60%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section h2 i {
            color: var(--accent);
        }
        .cta-section p {
            font-size: 18px;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-primary {
            padding: 16px 40px;
            border-radius: 100px;
            font-size: 17px;
            font-weight: 600;
            background: var(--accent);
            color: var(--secondary);
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-primary:hover {
            background: #ffe070;
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(247, 201, 72, 0.35);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f0f1a;
            color: #c8c8d6;
            padding: 60px 0 30px;
        }
        .site-footer .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8e8ea8;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #8e8ea8;
            font-size: 14px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: #6e6e88;
        }
        .footer-bottom .social-links {
            display: flex;
            gap: 12px;
        }
        .footer-bottom .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #8e8ea8;
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-bottom .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-guide-content h1 {
                font-size: 36px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 8px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }
            .header-cta .btn-primary span {
                display: none;
            }
            .hero-guide {
                padding: 60px 0 40px;
            }
            .hero-guide-content h1 {
                font-size: 28px;
            }
            .hero-guide-content p {
                font-size: 16px;
            }
            .hero-guide-stats {
                gap: 20px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .hero-guide-stats .stat-item .num {
                font-size: 24px;
            }
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .guide-list-item {
                flex-direction: column;
                padding: 16px 18px;
                gap: 12px;
            }
            .guide-list-item .meta {
                text-align: left;
                min-width: auto;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-guide-content h1 {
                font-size: 24px;
            }
            .hero-guide-actions {
                flex-direction: column;
            }
            .hero-guide-actions .btn-primary,
            .hero-guide-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .guide-card {
                padding: 20px 18px;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4F46E5;
            --primary-light: #6366F1;
            --primary-dark: #3730A3;
            --primary-bg: #EEF2FF;
            --accent: #F59E0B;
            --accent-light: #FCD34D;
            --accent-dark: #D97706;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #1E293B;
            --bg-dark-light: #334155;
            --text: #1E293B;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --text-light: #F1F5F9;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 12px 32px rgba(79, 70, 229, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg);
            padding: 4px;
            border-radius: 40px;
            border: 1px solid var(--border);
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 32px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-main a i {
            font-size: 14px;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.08);
        }
        .nav-main a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.30);
        }
        .nav-main a.active:hover {
            background: var(--primary-dark);
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            border: 1px solid var(--border);
        }
        .nav-toggle:hover {
            background: var(--border-light);
        }

        @media (max-width: 768px) {
            .nav-main {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 12px;
                border-radius: 0 0 var(--radius) var(--radius);
                border: 1px solid var(--border);
                border-top: none;
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                font-size: 15px;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner .logo {
                font-size: 18px;
            }
            .header-inner .logo i {
                font-size: 22px;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            padding: 20px 0 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-secondary);
        }
        .breadcrumb .sep {
            color: var(--border);
            font-size: 10px;
        }

        /* ===== 文章头部 ===== */
        .article-header {
            padding: 28px 0 12px;
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-bg);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .article-category i {
            font-size: 12px;
        }
        .article-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: var(--text);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            font-size: 13px;
        }
        .article-meta .author {
            color: var(--text-secondary);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .article-title {
                font-size: 24px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 480px) {
            .article-title {
                font-size: 20px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* ===== 文章封面 ===== */
        .article-cover {
            margin: 16px 0 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary-bg), #E0E7FF);
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .article-cover .cover-placeholder {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            color: var(--primary-light);
            padding: 48px 24px;
            text-align: center;
        }
        .article-cover .cover-placeholder i {
            font-size: 56px;
            opacity: 0.5;
        }
        .article-cover .cover-placeholder span {
            font-size: 15px;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .article-cover {
                min-height: 200px;
                border-radius: var(--radius);
            }
            .article-cover .cover-placeholder i {
                font-size: 40px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-body-wrap {
            padding-bottom: 40px;
        }
        .article-body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
            max-width: 820px;
            margin: 0 auto;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 36px;
            margin-bottom: 16px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 26px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-bg);
        }
        .article-body h3 {
            font-size: 21px;
        }
        .article-body h4 {
            font-size: 18px;
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 6px;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 28px auto;
            box-shadow: var(--shadow);
        }
        .article-body pre {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.6;
            margin: 24px 0;
        }
        .article-body code {
            background: var(--primary-bg);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: 'SF Mono', 'Fira Code', monospace;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body hr {
            border: none;
            height: 1px;
            background: var(--border);
            margin: 36px 0;
        }

        @media (max-width: 768px) {
            .article-body {
                font-size: 16px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-body blockquote {
                padding: 12px 16px;
            }
            .article-body pre {
                padding: 14px 16px;
                font-size: 13px;
            }
        }

        /* ===== 文章标签 ===== */
        .article-tags {
            padding: 24px 0 8px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .article-tags .label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 4px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary);
        }
        .tag i {
            font-size: 11px;
        }

        /* ===== 分类推荐板块 ===== */
        .section-explore {
            padding: 48px 0;
            background: var(--bg);
            border-top: 1px solid var(--border);
        }
        .section-explore .section-title {
            font-size: 24px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
        }
        .section-explore .section-desc {
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto 36px;
        }
        .explore-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .explore-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .explore-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .explore-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: #fff;
            background: var(--primary);
        }
        .explore-card:nth-child(1) .icon {
            background: linear-gradient(135deg, #6366F1, #4F46E5);
        }
        .explore-card:nth-child(2) .icon {
            background: linear-gradient(135deg, #F59E0B, #D97706);
        }
        .explore-card:nth-child(3) .icon {
            background: linear-gradient(135deg, #10B981, #059669);
        }
        .explore-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .explore-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .explore-card .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            transition: all var(--transition);
        }
        .explore-card .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
        }

        @media (max-width: 900px) {
            .explore-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .explore-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .explore-card {
                padding: 20px 16px;
            }
            .section-explore .section-title {
                font-size: 20px;
            }
        }

        /* ===== CTA 区域 ===== */
        .cta-section {
            padding: 56px 0 48px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            text-align: center;
        }
        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section .cta-desc {
            font-size: 16px;
            opacity: 0.90;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 14px 36px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.45);
            color: var(--bg-dark);
        }
        .cta-section .btn-cta i {
            font-size: 18px;
        }
        .cta-section .cta-small {
            margin-top: 16px;
            font-size: 13px;
            opacity: 0.70;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 16px 32px;
            }
            .cta-section .cta-title {
                font-size: 22px;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 52px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #A5B4FC, #C7D2FE);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 24px 0 32px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .social-links {
            display: flex;
            gap: 14px;
        }
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 18px;
            transition: all var(--transition);
        }
        .social-links a:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: scale(1.08);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 32px 0 0;
            }
        }

        /* ===== 文章不存在 ===== */
        .not-found-wrap {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-wrap i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .not-found-wrap h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .not-found-wrap .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-wrap .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== 通用工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .mb-8 {
            margin-bottom: 32px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-tags .tag {
                font-size: 12px;
                padding: 3px 10px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --secondary-dark: #e84393;
            --accent: #fdcb6e;
            --bg-body: #0a0a1a;
            --bg-card: #14142b;
            --bg-card-hover: #1c1c3a;
            --bg-surface: #1a1a35;
            --bg-nav: rgba(10, 10, 30, 0.92);
            --text-main: #f0f0f5;
            --text-muted: #a0a0c0;
            --text-light: #c8c8e0;
            --border-color: #2a2a50;
            --border-light: #3a3a60;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 48px rgba(108, 92, 231, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-w: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            background-image: radial-gradient(ellipse at 20% 10%, rgba(108, 92, 231, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 90%, rgba(253, 121, 168, 0.06) 0%, transparent 60%);
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-main);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            font-size: 2.4rem;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0.5rem auto 0;
        }
        .section-padding {
            padding: 5rem 0;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: var(--bg-nav);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-main a.active {
            color: #fff;
            background: rgba(108, 92, 231, 0.25);
            box-shadow: 0 0 20px rgba(108, 92, 231, 0.15);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px 3px 0 0;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary)) !important;
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 92, 231, 0.4) !important;
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark)) !important;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
        }
        .nav-toggle span {
            width: 28px;
            height: 3px;
            background: var(--text-main);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* ===== Hero 内页 ===== */
        .page-hero {
            padding: 8rem 0 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, rgba(108, 92, 231, 0.12) 0%, transparent 100%);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -20%;
            width: 60%;
            height: 80%;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.15), transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(253, 121, 168, 0.1), transparent 70%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.2rem;
            max-width: 680px;
            margin: 0 auto;
            color: var(--text-muted);
        }
        .page-hero .hero-tags {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        .page-hero .hero-tags span {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-hero .hero-tags span i {
            color: var(--secondary);
        }

        /* ===== 筛选/排序栏 ===== */
        .filter-bar {
            background: var(--bg-surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.8rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 2.5rem;
        }
        .filter-bar .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-bar .filter-group button {
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .filter-group button:hover {
            color: var(--text-main);
            border-color: var(--border-light);
            background: rgba(255, 255, 255, 0.08);
        }
        .filter-bar .filter-group button.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
        }
        .filter-bar .sort-select {
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-bar .sort-select:hover {
            border-color: var(--border-light);
        }

        /* ===== 评测卡片网格 ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }
        .review-card .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--primary-light);
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(253, 121, 168, 0.1));
        }
        .review-card .card-cover .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 12px rgba(253, 121, 168, 0.3);
        }
        .review-card .card-cover .card-score {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent);
            border: 1px solid rgba(253, 203, 110, 0.3);
        }
        .review-card .card-body {
            padding: 1.5rem 1.5rem 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .review-card .card-body .card-category {
            font-size: 0.8rem;
            color: var(--primary-light);
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 0.4rem;
        }
        .review-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }
        .review-card .card-body h3 a {
            color: var(--text-main);
        }
        .review-card .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .review-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            flex: 1;
        }
        .review-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
            margin-top: auto;
        }
        .review-card .card-body .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-card .card-body .card-meta .meta-left i {
            margin-right: 4px;
        }
        .review-card .card-body .card-meta .meta-left .rating {
            color: var(--accent);
        }
        .review-card .card-body .card-meta .read-more {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.85rem;
        }
        .review-card .card-body .card-meta .read-more:hover {
            color: var(--secondary);
        }

        /* ===== 评测标准 ===== */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .criteria-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: var(--transition);
        }
        .criteria-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-hover);
        }
        .criteria-item .c-icon {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .criteria-item h4 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .criteria-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .criteria-item .c-score {
            display: inline-block;
            margin-top: 0.8rem;
            background: rgba(108, 92, 231, 0.2);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary-light);
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.8rem;
            transition: var(--transition);
            cursor: default;
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(6px);
        }
        .rank-item .rank-num {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--text-muted);
            min-width: 48px;
            text-align: center;
            font-style: italic;
        }
        .rank-item:nth-child(1) .rank-num {
            color: var(--accent);
        }
        .rank-item:nth-child(2) .rank-num {
            color: #c0c0c0;
        }
        .rank-item:nth-child(3) .rank-num {
            color: #cd7f32;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
        }
        .rank-item .rank-info .rank-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .rank-item .rank-info .rank-tags span {
            font-size: 0.75rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.05);
            padding: 2px 12px;
            border-radius: 50px;
        }
        .rank-item .rank-score {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent);
            min-width: 56px;
            text-align: right;
        }
        .rank-item .rank-score small {
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--text-muted);
        }

        /* ===== 评测流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .process-step::before {
            counter-increment: step;
            content: '0' counter(step);
            position: absolute;
            top: 12px;
            right: 16px;
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(108, 92, 231, 0.12);
            line-height: 1;
        }
        .process-step .p-icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .process-step h4 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(253, 121, 168, 0.1));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 4rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 50%;
            height: 100%;
            background: radial-gradient(circle, rgba(253, 121, 168, 0.1), transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 2rem;
            color: var(--text-muted);
        }
        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.4);
            color: #fff;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-light);
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--text-main);
            background: rgba(108, 92, 231, 0.08);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-q {
            padding: 1.2rem 1.8rem;
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-q i {
            transition: var(--transition);
            color: var(--text-muted);
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-item .faq-a {
            padding: 0 1.8rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 4rem 0 0;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.8rem 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .social-links {
            display: flex;
            gap: 14px;
        }
        .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 3rem;
        }
        .pagination a,
        .pagination span {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .pagination a:hover {
            border-color: var(--primary-light);
            color: var(--text-main);
            background: rgba(108, 92, 231, 0.1);
        }
        .pagination .current {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .pagination .dots {
            border: none;
            background: none;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .criteria-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.6rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .section-title h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                padding: 6rem 0 3rem;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .review-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .criteria-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar .filter-group {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 3rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .rank-item {
                padding: 1rem 1.2rem;
                flex-wrap: wrap;
            }
            .rank-item .rank-score {
                min-width: auto;
            }
            .section-padding {
                padding: 3rem 0;
            }
            h2 {
                font-size: 1.6rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .criteria-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .page-hero .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .filter-bar .filter-group button {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .review-card .card-body {
                padding: 1.2rem;
            }
            .rank-item .rank-num {
                font-size: 1.2rem;
                min-width: 36px;
            }
            .rank-item .rank-info h4 {
                font-size: 0.95rem;
            }
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --secondary-light: #fab1c9;
            --accent: #00cec9;
            --accent-dark: #00b5b0;
            --bg-body: #f8f9fe;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1e1e2f;
            --bg-section-alt: #f0f0fa;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a0;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.06);
            --shadow-md: 0 6px 24px rgba(108, 92, 231, 0.10);
            --shadow-lg: 0 12px 40px rgba(108, 92, 231, 0.14);
            --shadow-hover: 0 16px 48px rgba(108, 92, 231, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        h1 {
            font-size: 2.6rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            margin-bottom: 0.5rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* nav-main: 分段标签导航 */
        .nav-main {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-section-alt);
            padding: 4px;
            border-radius: var(--radius-lg);
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-main::-webkit-scrollbar {
            display: none;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-main a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: rgba(108, 92, 231, 0.08);
        }
        .nav-main a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .nav-main a.active i {
            opacity: 1;
        }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* ===== Hero / 分类头图 ===== */
        .category-hero {
            padding: 56px 0 48px;
            background: linear-gradient(135deg, #f0eefc 0%, #fce4ec 100%);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.08), transparent 70%);
            border-radius: 50%;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(253, 121, 168, 0.06), transparent 70%);
            border-radius: 50%;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .category-hero-text {
            flex: 1 1 400px;
        }
        .category-hero-text .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--text-white);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .category-hero-text h1 {
            font-size: 2.8rem;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero-text p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 520px;
            line-height: 1.8;
        }
        .category-hero-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .category-hero-stats .stat {
            text-align: center;
            background: var(--bg-white);
            padding: 16px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            min-width: 100px;
        }
        .category-hero-stats .stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .category-hero-stats .stat .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .category-hero-illus {
            flex: 0 0 280px;
            text-align: center;
            font-size: 8rem;
            opacity: 0.6;
            color: var(--primary-light);
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            margin-bottom: 8px;
        }
        .section-title p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .subtitle-highlight {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 热门话题卡片网格 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .topic-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }
        .topic-card:hover::before {
            opacity: 1;
        }
        .topic-card .card-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .topic-card .card-head i {
            font-size: 1.6rem;
            color: var(--primary);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-section-alt);
            border-radius: var(--radius-sm);
        }
        .topic-card .card-head h3 {
            font-size: 1.1rem;
            font-weight: 600;
        }
        .topic-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .topic-card .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .topic-card .meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .topic-card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: var(--bg-section-alt);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            margin-right: 4px;
        }

        /* ===== 社区活动 ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .activity-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .activity-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .activity-card .icon-circle {
            flex: 0 0 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text-white);
        }
        .activity-card .act-body {
            flex: 1;
        }
        .activity-card .act-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .activity-card .act-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
        .activity-card .act-body .act-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .activity-card .act-body .act-meta .badge-hot {
            background: #ffe0e6;
            color: #e84393;
            padding: 1px 10px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }

        /* ===== 用户贡献 / 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: center;
        }
        .content-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: var(--primary-light);
        }
        .content-item .rank {
            flex: 0 0 40px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-muted);
            text-align: center;
        }
        .content-item .rank.top3 {
            color: var(--secondary);
        }
        .content-item .item-body {
            flex: 1;
        }
        .content-item .item-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .content-item .item-body p {
            color: var(--text-secondary);
            font-size: 0.88rem;
        }
        .content-item .item-meta {
            flex-shrink: 0;
            text-align: right;
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .content-item .item-meta .votes {
            color: var(--primary);
            font-weight: 600;
        }
        .content-item .item-avatar {
            flex: 0 0 44px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.1rem;
        }

        /* ===== 社区数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .stat-card .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            color: var(--text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-section-alt);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #8b7cf7);
            padding: 64px 0;
            text-align: center;
            color: var(--text-white);
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--text-white);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--bg-section-alt);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .site-footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #a29bfe, #fab1c9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 28px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .social-links {
            display: flex;
            gap: 14px;
        }
        .social-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.2rem;
            transition: color var(--transition);
        }
        .social-links a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero-text h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 820px) {
            .nav-main {
                gap: 2px;
                padding: 3px;
            }
            .nav-main a {
                padding: 6px 12px;
                font-size: 0.82rem;
            }
            .nav-main a i {
                display: none;
            }
            .category-hero-illus {
                display: none;
            }
            .category-hero-text h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                box-shadow: var(--shadow-lg);
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                z-index: 999;
                overflow-y: auto;
                max-height: calc(100vh - var(--header-height));
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-main a i {
                display: inline-block;
                width: 24px;
            }
            .category-hero {
                padding: 40px 0 32px;
            }
            .category-hero-text h1 {
                font-size: 1.8rem;
            }
            .category-hero-text p {
                font-size: 0.98rem;
            }
            .category-hero-stats .stat {
                padding: 12px 16px;
                min-width: 80px;
            }
            .category-hero-stats .stat .num {
                font-size: 1.4rem;
            }
            .section {
                padding: 44px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
            .content-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .content-item .item-meta {
                text-align: left;
                flex-direction: row;
                gap: 12px;
                width: 100%;
                padding-left: 52px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.92rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 14px 16px;
            }
        }

        @media (max-width: 520px) {
            body {
                padding-top: 60px;
            }
            :root {
                --header-height: 60px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .category-hero-text h1 {
                font-size: 1.5rem;
            }
            .category-hero-stats {
                gap: 12px;
            }
            .category-hero-stats .stat {
                padding: 10px 12px;
                min-width: 70px;
            }
            .category-hero-stats .stat .num {
                font-size: 1.2rem;
            }
            .section {
                padding: 32px 0;
            }
            .section-title {
                margin-bottom: 28px;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .topic-card {
                padding: 18px 16px;
            }
            .activity-card {
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
            }
            .activity-card .icon-circle {
                flex: 0 0 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .stat-num {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                gap: 20px;
            }
            .cta-section {
                padding: 44px 0;
            }
        }