/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0c1428;
            --primary-light: #1a2440;
            --primary-gradient: linear-gradient(135deg, #0c1428 0%, #1a2a4a 100%);
            --accent: #f0b90b;
            --accent-hover: #d4a309;
            --accent-gradient: linear-gradient(135deg, #f0b90b 0%, #f5a623 100%);
            --accent-light: rgba(240, 185, 11, 0.12);
            --accent-glow: rgba(240, 185, 11, 0.25);
            --text: #ffffff;
            --text-secondary: #b0b8c8;
            --text-muted: #6b7380;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.04);
            --card-bg: rgba(255, 255, 255, 0.04);
            --card-bg-hover: rgba(255, 255, 255, 0.08);
            --card-border: rgba(255, 255, 255, 0.06);
            --glass-bg: rgba(12, 20, 40, 0.85);
            --glass-border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
            --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 40px rgba(240, 185, 11, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-height: 80px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            background: var(--primary);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }

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

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--primary); }
        ::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== 头部与导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(12, 20, 40, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(12, 20, 40, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-right { justify-content: flex-end; }
        .nav-link {
            padding: 8px 18px;
            color: var(--text-secondary);
            font-size: 0.925rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-link:hover {
            color: var(--text);
            background: var(--accent-light);
        }
        .nav-link.active {
            color: var(--accent);
            background: var(--accent-light);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 1px;
            padding: 0 20px;
            flex-shrink: 0;
            text-align: center;
        }
        .logo span { color: var(--accent); }
        .logo a { color: inherit; }
        .logo a:hover { color: var(--accent); }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-xs);
            background: var(--accent-light);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            padding: 0;
        }
        .hamburger:hover { background: var(--accent-glow); }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            margin: 3px 0;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(12, 20, 40, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
            padding: 20px 24px;
            z-index: 999;
            transform: translateY(-20px);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }
        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: all;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 14px 18px;
            font-size: 1.05rem;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-menu .nav-link:last-child { border-bottom: none; }
        .mobile-menu .nav-link.active { color: var(--accent); }

        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .hamburger { display: flex; }
            .mobile-menu { display: block; }
            .logo { font-size: 1.25rem; padding: 0 12px; }
            .header-inner { padding: 0 16px; }
        }

        /* ===== 页面主体 ===== */
        main { padding-top: var(--header-height); }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background: var(--primary-gradient);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 1;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(12,20,40,0.3) 0%, rgba(12,20,40,0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: var(--accent-light);
            border: 1px solid rgba(240, 185, 11, 0.2);
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }
        .hero-title {
            font-size: 3.8rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title span { color: var(--accent); }
        .hero-sub {
            font-size: 1.25rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--accent-gradient);
            color: #0c1428;
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 35px var(--accent-glow);
            color: #0c1428;
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1.5px solid var(--border);
            backdrop-filter: blur(10px);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 10px 24px;
            font-size: 0.875rem;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero-title { font-size: 2.4rem; }
            .hero-sub { font-size: 1.05rem; }
            .hero-stats { gap: 28px; }
            .hero-stat-value { font-size: 1.8rem; }
            .btn { padding: 12px 28px; font-size: 0.9rem; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.8rem; }
            .hero-stats { gap: 20px; }
            .hero-stat-value { font-size: 1.5rem; }
            .hero-actions { flex-direction: column; align-items: center; }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 90px 0;
        }
        .section-dark {
            background: var(--primary-light);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--accent-light);
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section { padding: 60px 0; }
            .section-title { font-size: 1.8rem; }
            .section-desc { font-size: 1rem; }
            .section-header { margin-bottom: 40px; }
        }

        /* ===== 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }
        .feature-card:hover {
            background: var(--card-bg-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--accent-glow);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #0c1428;
            transform: scale(1.05);
        }
        .feature-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .feature-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== 场馆分类 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--accent-glow);
        }
        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition-slow);
        }
        .category-card:hover img { transform: scale(1.05); }
        .category-info {
            padding: 20px 24px 24px;
        }
        .category-name {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .category-name i { color: var(--accent); font-size: 0.9rem; opacity: 0; transition: var(--transition); }
        .category-card:hover .category-name i { opacity: 1; }
        .category-count {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .categories-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .categories-grid { grid-template-columns: 1fr; }
        }

        /* ===== 资讯列表 ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .post-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            background: var(--card-bg-hover);
        }
        .post-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .post-body {
            padding: 20px 24px 24px;
        }
        .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .post-meta .badge {
            padding: 2px 12px;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.75rem;
        }
        .post-title {
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-title a { color: var(--text); }
        .post-title a:hover { color: var(--accent); }
        .post-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .post-empty i { font-size: 2.4rem; margin-bottom: 16px; color: var(--text-muted); opacity: 0.5; }
        @media (max-width: 768px) {
            .posts-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: var(--card-bg-hover);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .stat-number { font-size: 2rem; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 1.6rem; }
        }

        /* ===== 服务流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
        }
        .process-step::after {
            content: '→';
            position: absolute;
            right: -18px;
            top: 40px;
            font-size: 1.6rem;
            color: var(--accent);
            opacity: 0.5;
        }
        .process-step:last-child::after { display: none; }
        .process-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent);
            color: #0c1428;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 30px var(--accent-glow);
        }
        .process-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
            .process-step::after { display: none; }
        }
        @media (max-width: 520px) {
            .process-grid { grid-template-columns: 1fr; gap: 28px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent-glow); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 500;
            font-size: 1rem;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        @media (max-width: 520px) {
            .faq-question { padding: 14px 16px; font-size: 0.95rem; }
            .faq-answer { padding: 0 16px; font-size: 0.9rem; }
            .faq-item.open .faq-answer { padding: 0 16px 14px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 40px 24px;
        }
        .cta-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        @media (max-width: 768px) {
            .cta-title { font-size: 1.6rem; }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #080e1c;
            border-top: 1px solid var(--border-light);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { padding: 0; font-size: 1.4rem; text-align: left; }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 16px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #0c1428;
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 响应式辅助 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        @media (max-width: 520px) {
            .section-title { font-size: 1.5rem; }
        }

        /* ===== 骨架加载状态（辅助） ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--card-bg) 25%, var(--card-bg-hover) 50%, var(--card-bg) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: var(--radius-xs);
        }
        @keyframes shimmer {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        /* ===== 分类页专属 ===== */
        .category-banner {
            position: relative;
            padding: 120px 0 80px;
            background: var(--primary-gradient);
            overflow: hidden;
            text-align: center;
        }
        .category-banner .hero-bg {
            opacity: 0.25;
        }
        .category-banner .hero-content { padding: 20px 24px; }
        .category-banner .hero-title { font-size: 2.8rem; }
        .category-banner .hero-sub { font-size: 1.1rem; }
        @media (max-width: 768px) {
            .category-banner { padding: 100px 0 60px; }
            .category-banner .hero-title { font-size: 2rem; }
        }

        /* 分类内页列表变体 */
        .cat-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        @media (max-width: 768px) {
            .cat-list-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 文章页专属 ===== */
        .article-main {
            max-width: 820px;
            margin: 0 auto;
            padding: 60px 24px 80px;
        }
        .article-header {
            margin-bottom: 40px;
        }
        .article-header .badge {
            display: inline-block;
            padding: 4px 16px;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 16px;
        }
        .article-header h1 {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 4px; }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body h2, .article-body h3 {
            color: var(--text);
            margin-top: 36px;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.25rem; }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 28px 0;
            width: 100%;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body ul li { list-style: disc; }
        .article-body ol li { list-style: decimal; }
        .article-body blockquote {
            border-left: 3px solid var(--accent);
            padding: 16px 24px;
            background: var(--accent-light);
            border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
            margin: 24px 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body a { color: var(--accent); text-decoration: underline; }
        .article-body a:hover { color: var(--accent-hover); }
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        @media (max-width: 768px) {
            .article-main { padding: 40px 16px 60px; }
            .article-header h1 { font-size: 1.8rem; }
            .article-body { font-size: 1rem; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb span { color: var(--text-secondary); }
        .breadcrumb i { font-size: 0.7rem; color: var(--text-muted); }

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
    --clr-primary: #e74c3c;
    --clr-primary-dark: #c0392b;
    --clr-primary-light: #ff6b5a;
    --clr-accent: #f39c12;
    --clr-accent-dark: #d68910;
    --clr-bg: #0a0e17;
    --clr-bg-alt: #111827;
    --clr-bg-card: #1a1f2e;
    --clr-bg-card-hover: #242b3d;
    --clr-text: #f0f2f5;
    --clr-text-secondary: #9ca3af;
    --clr-text-muted: #6b7280;
    --clr-border: #2d3548;
    --clr-border-light: #3d4760;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 30px rgba(231,76,60,0.15);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-sans);
    background: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.7;
    font-size: 16px;
    min-height: 100vh;
}
a { color: var(--clr-primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--clr-primary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.section { padding: 80px 0; }
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--clr-text) 0%, var(--clr-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-sub {
    text-align: center;
    color: var(--clr-text-secondary);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 48px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    color: var(--clr-text);
}
.btn-primary {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(231,76,60,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 35px rgba(231,76,60,0.45); background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary)); color: #fff; }
.btn-outline {
    border: 2px solid var(--clr-border-light);
    color: var(--clr-text);
}
.btn-outline:hover { border-color: var(--clr-primary); color: var(--clr-primary-light); transform: translateY(-2px); }
.btn-accent {
    background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(243,156,18,0.3);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 35px rgba(243,156,18,0.45); color: #fff; }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    color: var(--clr-text-secondary);
}
.badge-primary { background: rgba(231,76,60,0.15); color: var(--clr-primary-light); border-color: rgba(231,76,60,0.3); }
.badge-accent { background: rgba(243,156,18,0.15); color: var(--clr-accent); border-color: rgba(243,156,18,0.3); }

/* ========== Header & Nav ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10,14,23,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(45,53,72,0.4);
    transition: var(--transition);
}
.header.scrolled { background: rgba(10,14,23,0.96); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 8px; }
.nav-link {
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text-secondary);
    transition: var(--transition);
    position: relative;
}
.nav-link:hover { color: var(--clr-text); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--clr-primary-light); background: rgba(231,76,60,0.1); }
.nav-link.active::after { display: none; }
.logo a {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--clr-text);
    letter-spacing: -0.5px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 2px;
}
.logo a span { color: var(--clr-primary); }
.logo a:hover { color: var(--clr-text); }
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--clr-text);
    border-radius: 4px;
    transition: var(--transition);
}
.hamburger:hover { background: rgba(255,255,255,0.05); }

/* ========== Article Banner ========== */
.article-banner {
    position: relative;
    padding: 140px 0 80px;
    margin-top: 72px;
    background: linear-gradient(135deg, rgba(10,14,23,0.92), rgba(10,14,23,0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-bottom: 1px solid var(--clr-border);
}
.article-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: linear-gradient(to top, var(--clr-bg), transparent);
    pointer-events: none;
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--clr-text-muted); }
.breadcrumb a:hover { color: var(--clr-primary-light); }
.breadcrumb .sep { color: var(--clr-border-light); }
.breadcrumb .current { color: var(--clr-text-secondary); }
.article-banner .article-category {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    background: rgba(231,76,60,0.15);
    color: var(--clr-primary-light);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    border: 1px solid rgba(231,76,60,0.2);
}
.article-banner h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    max-width: 900px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    color: var(--clr-text-secondary);
    font-size: 0.9rem;
}
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--clr-primary); }

/* ========== Article Content ========== */
.article-content-wrap {
    padding: 60px 0 80px;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}
.article-body {
    background: var(--clr-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 48px;
    box-shadow: var(--shadow-md);
}
.article-body .content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--clr-text);
}
.article-body .content p { margin-bottom: 1.6em; }
.article-body .content h2 { font-size: 1.6rem; font-weight: 700; margin: 1.8em 0 0.8em; color: var(--clr-text); }
.article-body .content h3 { font-size: 1.25rem; font-weight: 600; margin: 1.5em 0 0.6em; color: var(--clr-text); }
.article-body .content ul, .article-body .content ol { margin: 1em 0; padding-left: 1.8em; }
.article-body .content li { margin-bottom: 0.5em; list-style: disc; }
.article-body .content ol li { list-style: decimal; }
.article-body .content a { color: var(--clr-primary-light); text-decoration: underline; }
.article-body .content blockquote {
    border-left: 4px solid var(--clr-primary);
    padding: 16px 24px;
    margin: 1.5em 0;
    background: rgba(231,76,60,0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--clr-text-secondary);
    font-style: italic;
}
.article-body .content img {
    border-radius: var(--radius-md);
    margin: 1.5em 0;
    box-shadow: var(--shadow-sm);
}
.article-body .content pre {
    background: var(--clr-bg-card);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    overflow-x: auto;
    border: 1px solid var(--clr-border);
    font-size: 0.9rem;
    margin: 1.5em 0;
}
.article-body .content code { font-family: 'Fira Code', monospace; }

.article-footer-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--clr-border);
}
.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.article-tags .tag {
    padding: 6px 16px;
    border-radius: 50px;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    font-size: 0.8rem;
    color: var(--clr-text-secondary);
    transition: var(--transition);
}
.article-tags .tag:hover { border-color: var(--clr-primary); color: var(--clr-primary-light); }
.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
}
.article-share span { font-size: 0.85rem; color: var(--clr-text-muted); }
.article-share a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    color: var(--clr-text-secondary);
    font-size: 1rem;
    transition: var(--transition);
}
.article-share a:hover { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); transform: translateY(-2px); }

/* ========== Sidebar ========== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.sidebar-card {
    background: var(--clr-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--clr-border);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-card h3 i { color: var(--clr-primary); }
.sidebar-post-list { display: flex; flex-direction: column; gap: 16px; }
.sidebar-post-item {
    display: flex;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(45,53,72,0.4);
    transition: var(--transition);
    cursor: pointer;
}
.sidebar-post-item:last-child { border-bottom: none; }
.sidebar-post-item:hover .sidebar-post-title { color: var(--clr-primary-light); }
.sidebar-post-thumb {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--clr-bg-card);
}
.sidebar-post-info { flex: 1; min-width: 0; }
.sidebar-post-title {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--clr-text);
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.sidebar-post-date {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
    margin-top: 6px;
}
.sidebar-cat-list { display: flex; flex-direction: column; gap: 8px; }
.sidebar-cat-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    color: var(--clr-text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}
.sidebar-cat-list a:hover { background: var(--clr-bg-card-hover); color: var(--clr-primary-light); border-color: var(--clr-primary); }
.sidebar-cat-list a span { background: var(--clr-primary); color: #fff; padding: 2px 10px; border-radius: 50px; font-size: 0.75rem; }

/* ========== Related Posts ========== */
.related-section {
    padding: 60px 0 80px;
    background: var(--clr-bg-alt);
    border-top: 1px solid var(--clr-border);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 40px;
}
.related-card {
    background: var(--clr-bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--clr-border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--clr-border-light); }
.related-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--clr-border);
}
.related-card-body { padding: 20px 24px 24px; }
.related-card-body .badge { margin-bottom: 10px; }
.related-card-body h4 { font-size: 1.05rem; font-weight: 600; line-height: 1.4; margin-bottom: 10px; }
.related-card-body h4 a { color: var(--clr-text); }
.related-card-body h4 a:hover { color: var(--clr-primary-light); }
.related-card-body p { font-size: 0.88rem; color: var(--clr-text-secondary); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body .meta { font-size: 0.78rem; color: var(--clr-text-muted); display: flex; align-items: center; gap: 12px; }

/* ========== CTA Section ========== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(10,14,23,0.95), rgba(10,14,23,0.8)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    text-align: center;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at center, rgba(231,76,60,0.08), transparent);
    pointer-events: none;
}
.cta-section h2 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.cta-section p {
    font-size: 1.1rem;
    color: var(--clr-text-secondary);
    max-width: 560px;
    margin: 0 auto 32px;
}
.cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ========== Footer ========== */
.footer {
    background: var(--clr-bg-alt);
    border-top: 1px solid var(--clr-border);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--clr-border);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; color: var(--clr-text-secondary); line-height: 1.7; max-width: 360px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    color: var(--clr-text-secondary);
    font-size: 1.2rem;
    transition: var(--transition);
}
.footer-social a:hover { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); transform: translateY(-3px); }
.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--clr-text);
}
.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--clr-text-secondary);
    transition: var(--transition);
}
.footer-col a:hover { color: var(--clr-primary-light); padding-left: 4px; }
.footer-col a i { width: 20px; margin-right: 6px; color: var(--clr-primary); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 24px 0;
    font-size: 0.85rem;
    color: var(--clr-text-muted);
}
.footer-bottom a { color: var(--clr-text-muted); }
.footer-bottom a:hover { color: var(--clr-primary-light); }

/* ========== 404 State ========== */
.not-found-wrap {
    text-align: center;
    padding: 120px 0 80px;
    margin-top: 72px;
}
.not-found-wrap h1 { font-size: 3rem; font-weight: 800; margin-bottom: 16px; }
.not-found-wrap p { color: var(--clr-text-secondary); font-size: 1.1rem; margin-bottom: 32px; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-banner h1 { font-size: 2.2rem; }
}
@media (max-width: 768px) {
    .nav-left, .nav-right { display: none; }
    .hamburger { display: flex; }
    .header-inner { height: 64px; }
    .logo a { font-size: 1.3rem; }
    .section { padding: 56px 0; }
    .section-title { font-size: 1.7rem; }
    .article-banner { padding: 120px 0 56px; }
    .article-banner h1 { font-size: 1.8rem; }
    .article-body { padding: 28px 20px; }
    .article-footer-bar { flex-direction: column; align-items: flex-start; }
    .article-sidebar { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-section h2 { font-size: 1.8rem; }
    .article-meta { gap: 16px; font-size: 0.82rem; }
    .sidebar-post-thumb { width: 56px; height: 56px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .article-banner h1 { font-size: 1.5rem; }
    .article-body { padding: 20px 16px; }
    .article-body .content { font-size: 0.95rem; }
    .btn { padding: 10px 24px; font-size: 0.85rem; }
    .section-title { font-size: 1.4rem; }
    .related-card img { height: 160px; }
    .breadcrumb { font-size: 0.78rem; }
}

/* ========== Mobile Nav Overlay ========== */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10,14,23,0.95);
    backdrop-filter: blur(12px);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px 24px;
}
.mobile-nav-overlay.open { display: flex; }
.mobile-nav-overlay a {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--clr-text-secondary);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.mobile-nav-overlay a:hover { color: var(--clr-text); background: rgba(255,255,255,0.05); }
.mobile-nav-overlay a.active { color: var(--clr-primary-light); }
.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    color: var(--clr-text);
    font-size: 2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
}
.mobile-nav-close:hover { background: rgba(255,255,255,0.05); }

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-border-light); }

/* ========== Animations ========== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.animate-in { animation: fadeInUp 0.6s ease forwards; }
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1341a8;
            --primary-light: #e8f0fe;
            --primary-gradient: linear-gradient(135deg, #1a56db 0%, #0f3a8e 100%);
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --secondary-light: #fef3c7;
            --accent: #ef4444;
            --bg-dark: #0f172a;
            --bg-dark2: #1e293b;
            --bg-dark3: #334155;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-main: #334155;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.14);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        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;
        }

        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

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

        /* ===== 通用板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            text-align: center;
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 680px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            border-color: var(--secondary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.25);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
            border-radius: var(--radius);
        }
        @media (max-width: 520px) {
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .badge-hot {
            background: #fee2e2;
            color: #dc2626;
        }
        .badge-new {
            background: #d1fae5;
            color: #059669;
        }
        .badge-orange {
            background: var(--secondary-light);
            color: var(--secondary-dark);
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img {
            transform: scale(1.05);
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .card-text {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-lighter);
            flex-wrap: wrap;
        }
        .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }
        .card-price {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent);
        }
        .card-price small {
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--text-light);
        }
        .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Header & 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition);
        }
        .header.scrolled {
            background: rgba(15, 23, 42, 0.98);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            letter-spacing: 0.3px;
            position: relative;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(26, 86, 219, 0.25);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .logo {
            flex-shrink: 0;
            text-align: center;
        }
        .logo a {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-decoration: none;
        }
        .logo a span {
            color: var(--secondary);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.98);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 4px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                backdrop-filter: blur(16px);
            }
            .nav-left {
                bottom: auto;
            }
            .nav-left.open,
            .nav-right.open {
                display: flex;
            }
            .nav-left {
                top: var(--header-h);
                z-index: 999;
            }
            .nav-right {
                top: calc(var(--header-h) + 200px);
                z-index: 998;
            }
            .nav-link {
                font-size: 1.05rem;
                padding: 12px 20px;
                width: 100%;
                text-align: center;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo a {
                font-size: 1.25rem;
            }
        }

        /* ===== Hero ===== */
        .hero-cat {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-cat-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            filter: blur(2px);
        }
        .hero-cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.6) 100%);
        }
        .hero-cat-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-cat-content .badge {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            backdrop-filter: blur(4px);
            padding: 6px 20px;
            font-size: 0.85rem;
            margin-bottom: 20px;
        }
        .hero-cat-content h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .hero-cat-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-cat-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .hero-cat {
                min-height: 340px;
                padding: 100px 16px 60px;
            }
            .hero-cat-content h1 {
                font-size: 2rem;
            }
            .hero-cat-content p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .hero-cat-content h1 {
                font-size: 1.6rem;
            }
            .hero-cat-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 分类标签 ===== */
        .cat-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 48px;
        }
        .cat-tab {
            padding: 10px 28px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--bg-white);
            color: var(--text-main);
            border: 2px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }
        .cat-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .cat-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.3);
        }
        @media (max-width: 520px) {
            .cat-tabs {
                gap: 8px;
            }
            .cat-tab {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
        }

        /* ===== 热门场馆 ===== */
        .venue-card .card-img-wrap {
            position: relative;
            overflow: hidden;
        }
        .venue-card .card-img-wrap .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .venue-card .card-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .venue-card .card-rating span {
            color: var(--text-light);
            font-weight: 400;
        }

        /* ===== 特色区块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .feature-icon {
            width: 68px;
            height: 68px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }
        .feature-item h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .feature-item {
                padding: 24px 18px;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: flex;
            justify-content: center;
            gap: 40px;
            counter-reset: step;
            flex-wrap: wrap;
        }
        .step {
            flex: 1;
            min-width: 180px;
            max-width: 240px;
            text-align: center;
            position: relative;
        }
        .step::after {
            content: '→';
            position: absolute;
            right: -24px;
            top: 30px;
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 300;
        }
        .step:last-child::after {
            display: none;
        }
        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.25);
        }
        .step h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .steps {
                gap: 24px;
                flex-direction: column;
                align-items: center;
            }
            .step {
                max-width: 320px;
                width: 100%;
            }
            .step::after {
                content: '↓';
                right: auto;
                bottom: -18px;
                top: auto;
                left: 50%;
                transform: translateX(-50%);
            }
            .step:last-child::after {
                display: none;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.82);
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 28px 16px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .stat-number span {
            color: var(--secondary);
        }
        .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-q:hover {
            background: var(--bg-light);
        }
        .faq-q i {
            font-size: 1.1rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 520px) {
            .faq-q {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-a {
                padding: 0 18px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-a {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            text-align: center;
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 32px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo a {
            font-size: 1.4rem;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 16px 0 20px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-lighter);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

        /* ===== 选中样式 ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 骨架屏过渡 ===== */
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }