/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #3b82f6;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --secondary: #8b5cf6;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --dark: #0b1120;
            --dark-2: #111827;
            --dark-3: #1e293b;
            --light: #f8fafc;
            --light-2: #e2e8f0;
            --text: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dark: #0f172a;
            --border: #1e293b;
            --border-light: #334155;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            background: var(--dark);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--light);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-muted);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 17, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(30, 41, 59, 0.6);
            transition: background var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 17, 32, 0.98);
            box-shadow: var(--shadow);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--light);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--accent);
            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;
        }
        .logo:hover {
            color: var(--light);
            opacity: 0.9;
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-main a {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .nav-main a:hover {
            color: var(--light);
        }
        .nav-main a:hover::after {
            width: 100%;
        }
        .nav-main a.active {
            color: var(--light);
        }
        .nav-main a.active::after {
            width: 100%;
            background: var(--primary-light);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(30, 41, 59, 0.6);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 6px 16px 6px 20px;
            transition: border-color var(--transition), background var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: rgba(30, 41, 59, 0.9);
        }
        .search-box input {
            background: none;
            border: none;
            outline: none;
            color: var(--light);
            font-size: 0.9rem;
            width: 160px;
            padding: 4px 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 4px 0 4px 8px;
            transition: color var(--transition);
        }
        .search-box button:hover {
            color: var(--accent);
        }
        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-header-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
        }
        .btn-header-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.4);
            color: #fff;
        }
        .btn-header-outline {
            background: transparent;
            color: var(--text-muted);
            border: 1px solid var(--border-light);
        }
        .btn-header-outline:hover {
            border-color: var(--primary);
            color: var(--light);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 17, 32, 0.88) 0%, rgba(11, 17, 32, 0.6) 50%, rgba(11, 17, 32, 0.3) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--dark), transparent);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 60px 20px 80px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: 50px;
            padding: 6px 20px;
            font-size: 0.85rem;
            color: var(--primary-light);
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }
        .hero-badge i {
            font-size: 0.75rem;
            color: var(--accent);
        }
        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 8px 32px rgba(59, 130, 246, 0.35);
        }
        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.45);
            color: #fff;
        }
        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--light);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
            color: var(--light);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--light);
            line-height: 1.2;
        }
        .hero-stat-number .num-suffix {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--dark-2);
        }
        .section-darker {
            background: var(--dark);
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--dark-2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary-light);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--dark-2);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-light);
        }
        .category-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .category-card-body {
            padding: 24px 24px 28px;
        }
        .category-card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .category-card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--dark-2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            transition: all var(--transition);
        }
        .news-card:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .news-card .news-category {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--primary-light);
            background: rgba(59, 130, 246, 0.1);
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
        }
        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--light);
        }
        .news-card h3 a:hover {
            color: var(--primary-light);
        }
        .news-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .news-card .news-meta i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--dark-2);
            border-radius: var(--radius);
            border: 1px dashed var(--border-light);
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--border-light);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: var(--dark-2);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 16px;
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--light);
            line-height: 1.2;
        }
        .stat-item .stat-number .suffix {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== 流程/路径节点 ===== */
        .path-section {
            background: var(--dark-2);
        }
        .path-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            position: relative;
        }
        .path-step {
            text-align: center;
            position: relative;
            padding: 32px 20px;
            background: var(--dark);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .path-step:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .path-step .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
        }
        .path-step h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .path-step p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .path-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--dark-2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--light);
            transition: color var(--transition);
            user-select: none;
        }
        .faq-question i {
            color: var(--text-muted);
            transition: transform var(--transition);
            font-size: 0.85rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--dark-2), var(--dark-3));
            text-align: center;
            padding: 80px 0;
            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(59, 130, 246, 0.05) 0%, transparent 60%),
                radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 60%);
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.4);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            border-top: 1px solid var(--border);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--dark-2);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--light);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: clamp(2rem, 5vw, 3rem);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .nav-main {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(11, 17, 32, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                font-size: 1.05rem;
                padding: 8px 0;
            }
            .nav-right .search-box {
                display: none;
            }
            .nav-right .btn-header-outline {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero {
                min-height: 70vh;
            }
            .hero-content {
                padding: 40px 20px 60px;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 24px;
            }
            .hero-stat-number {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .path-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-hero {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .news-card {
                padding: 18px 20px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .category-card-body {
                padding: 18px 20px 22px;
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.7s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== 辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #8b5cf6;
            --accent-light: #a78bfa;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.04);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 5rem;
            --spacing-block: 3rem;
        }

        /* ===== 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);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        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;
        }

        /* ===== 头部 & 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            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);
            transition: background var(--transition);
        }

        .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: 1.35rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .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: 0.85;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav-main a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .nav-main a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-main a.active:hover {
            background: var(--primary-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 6px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-actions .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.10);
        }
        .header-actions .search-box input {
            border: none;
            background: transparent;
            padding: 4px 8px;
            font-size: 0.9rem;
            color: var(--text);
            width: 140px;
            outline: none;
        }
        .header-actions .search-box input::placeholder {
            color: var(--text-muted);
        }
        .header-actions .search-box button {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: color var(--transition);
        }
        .header-actions .search-box button:hover {
            color: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary);
            color: #fff;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--bg-alt);
            color: var(--text);
            border: 1px solid var(--border);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .btn-secondary:hover {
            background: var(--border-light);
            border-color: var(--text-muted);
            transform: translateY(-1px);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
        }
        .btn-ghost:hover {
            background: var(--bg-alt);
            color: var(--text);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            transition: transform var(--transition), opacity var(--transition);
        }

        /* ===== 移动端导航 ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 20px 24px 32px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow);
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
        }
        .mobile-nav a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .mobile-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-nav .mobile-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }
        .mobile-nav .mobile-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 8px 16px;
        }
        .mobile-nav .mobile-actions .search-box input {
            border: none;
            background: transparent;
            padding: 4px 8px;
            font-size: 0.95rem;
            color: var(--text);
            flex: 1;
            outline: none;
        }
        .mobile-nav .mobile-actions .search-box input::placeholder {
            color: var(--text-muted);
        }
        .mobile-nav .mobile-actions .search-box button {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            padding: calc(var(--header-height) + 3rem) 0 3.5rem;
            background: linear-gradient(135deg, var(--primary-bg), #eef2ff, var(--primary-bg));
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.50);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner-content {
            max-width: 720px;
        }
        .page-banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .page-banner-content h1 i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .page-banner-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 1.8rem;
            max-width: 600px;
        }
        .page-banner-content .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .page-banner-content .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.20);
        }
        .page-banner-content .banner-tags span i {
            color: var(--secondary);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            margin-bottom: 2.5rem;
            max-width: 600px;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .section-header .section-title {
            margin-bottom: 0.25rem;
        }
        .section-header .section-subtitle {
            margin-bottom: 0;
        }
        .section-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .section-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 攻略分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            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-hover);
            border-color: transparent;
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .icon-wrap {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .category-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .category-card .badge-count {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            transition: background var(--transition), color var(--transition);
        }
        .category-card:hover .badge-count {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 热门攻略卡片 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }
        .guide-card .card-body {
            padding: 20px 20px 22px;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
        .guide-card .card-tags span {
            padding: 2px 12px;
            border-radius: 50px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .guide-card .card-tags span.hot {
            background: #fef3c7;
            color: #d97706;
        }
        .guide-card .card-tags span.new {
            background: #ecfdf5;
            color: #059669;
        }
        .guide-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .guide-card h3 a {
            color: var(--text);
        }
        .guide-card h3 a:hover {
            color: var(--primary);
        }
        .guide-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .guide-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-meta i {
            font-size: 0.75rem;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-card .stat-number .plus {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 8px;
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== 攻略流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px 24px;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-card .step-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-bg);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -2px;
            transition: color var(--transition);
        }
        .step-card:hover .step-number {
            color: var(--primary-light);
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            background: var(--bg-alt);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            padding: 4.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 2rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
            background: var(--primary-bg);
            color: var(--primary-dark);
        }
        .cta-section .btn-cta i {
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
            font-size: 1.3rem;
        }
        .footer-brand .logo i {
            color: var(--primary-light);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -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);
            margin-bottom: 18px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform 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 ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
            display: inline-block;
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
                --header-height: 64px;
            }
            .nav-main {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .page-banner {
                padding: calc(var(--header-height) + 2rem) 0 2.5rem;
            }
            .page-banner-content h1 {
                font-size: 2rem;
            }
            .page-banner-content p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .steps-grid {
                grid-template-columns: 1fr 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;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner-content h1 {
                font-size: 1.6rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .page-banner-content .banner-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.88rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 0.5rem;
        }
        .mt-4 {
            margin-top: 1.5rem;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fbbf24;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-soft: #334155;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-hover: 0 12px 40px rgba(37,99,235,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        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; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--nav-height); gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 22px; font-weight: 800; color: var(--text);
            white-space: nowrap;
        }
        .logo i { color: var(--primary); font-size: 26px; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            padding: 8px 18px; border-radius: 40px;
            font-size: 15px; font-weight: 500; color: var(--text-soft);
            transition: all var(--transition); position: relative;
        }
        .nav-main a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-main a.active { color: #fff; background: var(--primary); box-shadow: 0 4px 14px rgba(37,99,235,0.25); }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .nav-search {
            display: flex; align-items: center; gap: 8px;
            background: var(--bg-alt); border: 1px solid var(--border);
            border-radius: 40px; padding: 6px 16px; transition: all var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
        .nav-search input {
            border: none; background: transparent; outline: none;
            font-size: 14px; color: var(--text); width: 140px;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 16px; }
        .nav-btn {
            padding: 8px 22px; border-radius: 40px; font-size: 14px; font-weight: 600;
            border: none; cursor: pointer; transition: all var(--transition);
            background: var(--primary); color: #fff; white-space: nowrap;
        }
        .nav-btn:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,0.3); }
        .nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--text); cursor: pointer; padding: 4px; }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--nav-height);
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            position: relative; overflow: hidden; min-height: 360px;
            display: flex; align-items: center;
        }
        .article-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.18; mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; width: 100%; padding-top: 40px; padding-bottom: 40px; }
        .article-hero .breadcrumb {
            display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 20px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); transition: color var(--transition); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.4); }
        .article-hero .hero-category {
            display: inline-block; padding: 4px 14px; border-radius: 40px;
            background: var(--accent); color: #fff; font-size: 13px; font-weight: 600;
            margin-bottom: 16px; letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: 36px; font-weight: 800; color: #fff; max-width: 800px;
            line-height: 1.25; margin-bottom: 16px;
        }
        .article-hero .hero-meta {
            display: flex; flex-wrap: wrap; gap: 16px 28px; font-size: 14px; color: rgba(255,255,255,0.65);
        }
        .article-hero .hero-meta i { margin-right: 6px; color: var(--accent-light); }

        /* ===== Article Body ===== */
        .article-section { padding: 60px 0; background: var(--bg); }
        .article-layout {
            display: grid; grid-template-columns: 1fr 340px; gap: 48px;
            align-items: start;
        }
        .article-content { min-width: 0; }
        .article-content .featured-image {
            border-radius: var(--radius); overflow: hidden; margin-bottom: 32px;
            box-shadow: var(--shadow);
        }
        .article-content .featured-image img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .article-body { font-size: 16px; line-height: 1.85; color: var(--text-soft); }
        .article-body p { margin-bottom: 20px; }
        .article-body h2 { font-size: 24px; margin-top: 36px; margin-bottom: 14px; color: var(--text); }
        .article-body h3 { font-size: 20px; margin-top: 28px; margin-bottom: 12px; color: var(--text); }
        .article-body ul, .article-body ol { margin-bottom: 20px; padding-left: 24px; }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 6px; }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-body blockquote {
            border-left: 4px solid var(--primary); padding: 16px 20px; margin: 24px 0;
            background: var(--primary-bg); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic; color: var(--text-soft);
        }
        .article-body img { border-radius: var(--radius-sm); margin: 20px 0; }
        .article-body code {
            background: var(--bg-alt); padding: 2px 8px; border-radius: var(--radius-xs);
            font-size: 14px; border: 1px solid var(--border);
        }
        .article-body pre {
            background: #1e293b; color: #e2e8f0; padding: 20px; border-radius: var(--radius-sm);
            overflow-x: auto; margin-bottom: 20px; font-size: 14px; line-height: 1.6;
        }
        .article-body pre code { background: transparent; border: none; padding: 0; color: inherit; }
        .article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border); }
        .article-tags .tag {
            padding: 5px 14px; border-radius: 40px; font-size: 13px; font-weight: 500;
            background: var(--bg-alt); color: var(--text-soft); border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .article-tags .tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }
        .article-share { display: flex; gap: 12px; margin-top: 20px; align-items: center; }
        .article-share span { font-size: 14px; color: var(--text-muted); font-weight: 500; }
        .article-share a {
            width: 40px; height: 40px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            background: var(--bg-alt); color: var(--text-soft); border: 1px solid var(--border);
            transition: all var(--transition); font-size: 16px;
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 28px 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 18px; font-weight: 700; margin-bottom: 18px;
            display: flex; align-items: center; gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-list li { }
        .sidebar-list a {
            display: flex; gap: 14px; padding: 12px 0;
            border-bottom: 1px solid var(--border-light); transition: all var(--transition);
            align-items: flex-start;
        }
        .sidebar-list li:last-child a { border-bottom: none; }
        .sidebar-list a:hover { padding-left: 6px; }
        .sidebar-list .thumb {
            width: 72px; height: 54px; border-radius: var(--radius-xs); overflow: hidden; flex-shrink: 0;
            background: var(--bg-alt);
        }
        .sidebar-list .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .sidebar-list .info { flex: 1; min-width: 0; }
        .sidebar-list .info .title { font-size: 14px; font-weight: 600; color: var(--text); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .sidebar-list .info .meta { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; border: none; padding: 24px; border-radius: var(--radius);
            text-align: center;
        }
        .sidebar-cta h4 { font-size: 18px; color: #fff; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 14px; opacity: 0.85; margin-bottom: 18px; }
        .sidebar-cta .btn {
            display: inline-block; padding: 10px 28px; border-radius: 40px;
            background: #fff; color: var(--primary); font-weight: 600; font-size: 14px;
            transition: all var(--transition); border: none; cursor: pointer;
        }
        .sidebar-cta .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

        /* ===== Not Found ===== */
        .not-found-page {
            margin-top: var(--nav-height); min-height: 60vh;
            display: flex; align-items: center; justify-content: center;
            text-align: center; padding: 60px 24px;
        }
        .not-found-page .icon { font-size: 64px; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-page h1 { font-size: 28px; margin-bottom: 12px; }
        .not-found-page p { color: var(--text-muted); margin-bottom: 24px; max-width: 400px; }
        .not-found-page .btn {
            display: inline-block; padding: 12px 32px; border-radius: 40px;
            background: var(--primary); color: #fff; font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-page .btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== CTA ===== */
        .article-cta {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 60px 0; text-align: center; position: relative; overflow: hidden;
        }
        .article-cta::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.10; mix-blend-mode: overlay;
        }
        .article-cta .container { position: relative; z-index: 2; }
        .article-cta h2 { font-size: 30px; color: #fff; margin-bottom: 12px; }
        .article-cta p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; font-size: 16px; }
        .article-cta .btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .article-cta .btn-primary {
            padding: 14px 36px; border-radius: 40px; font-weight: 600; font-size: 15px;
            background: var(--accent); color: #fff; border: none; cursor: pointer;
            transition: all var(--transition);
        }
        .article-cta .btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.3); }
        .article-cta .btn-outline {
            padding: 14px 36px; border-radius: 40px; font-weight: 600; font-size: 15px;
            background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.25);
            cursor: pointer; transition: all var(--transition);
        }
        .article-cta .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a; color: rgba(255,255,255,0.8); padding: 60px 0 0;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { font-size: 20px; color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { background: linear-gradient(135deg, #fff, #94a3b8); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            width: 38px; height: 38px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
            display: flex; align-items: center; justify-content: center;
            transition: all var(--transition); font-size: 17px;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.55); transition: all var(--transition); }
        .footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; font-size: 13px; color: rgba(255,255,255,0.4);
            flex-wrap: wrap; gap: 8px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 36px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-hero h1 { font-size: 30px; }
        }
        @media (max-width: 768px) {
            .nav-main { display: none; }
            .nav-main.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); padding: 16px 24px 24px; border-bottom: 1px solid var(--border); gap: 6px; }
            .nav-main.open a { width: 100%; text-align: center; padding: 12px; }
            .nav-toggle { display: block; }
            .nav-search { display: none; }
            .nav-search.mobile-show { display: flex; margin-top: 12px; width: 100%; }
            .nav-search.mobile-show input { width: 100%; }
            .nav-btn { display: none; }
            .header-inner { gap: 8px; }
            .article-hero { min-height: 280px; }
            .article-hero h1 { font-size: 24px; }
            .article-hero .hero-meta { gap: 10px 18px; font-size: 13px; }
            .article-section { padding: 40px 0; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .sidebar-card { padding: 20px 16px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 20px; }
            .article-hero { min-height: 220px; }
            .article-hero .container { padding-top: 24px; padding-bottom: 24px; }
            .article-section { padding: 28px 0; }
            .article-body { font-size: 15px; }
            .article-body h2 { font-size: 20px; }
            .article-body h3 { font-size: 18px; }
            .sidebar-list .thumb { width: 60px; height: 45px; }
            .article-cta h2 { font-size: 22px; }
            .article-cta .btn-primary, .article-cta .btn-outline { width: 100%; text-align: center; }
            .footer-grid { gap: 20px; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--primary); outline-offset: 2px; border-radius: var(--radius-xs);
        }