/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a2a4a;
            --color-primary-light: #2c3e6b;
            --color-primary-dark: #0f1b32;
            --color-secondary: #3b82f6;
            --color-secondary-light: #60a5fa;
            --color-secondary-dark: #2563eb;
            --color-accent: #10b981;
            --color-accent-light: #34d399;
            --color-bg: #f8fafc;
            --color-bg-alt: #eef2f7;
            --color-bg-dark: #0f1b32;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-lighter: #94a3b8;
            --color-text-on-dark: #f1f5f9;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-card-bg: #ffffff;
            --color-card-shadow: rgba(0, 0, 0, 0.06);
            --color-card-shadow-hover: rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.14);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--color-secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-secondary-dark); }
        a:focus-visible { outline: 3px solid var(--color-secondary); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-primary); }
        p { margin-bottom: 1rem; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-sm);
            width: 100%;
        }
        .container-narrow { max-width: 900px; }
        .container-wide { max-width: 1400px; }

        /* ===== 板块间距 ===== */
        .section { padding: var(--space-lg) 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: var(--color-text-on-dark); }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: #ffffff; }
        .section-divider { border: none; height: 1px; background: var(--color-border); margin: 0; }

        .section-title {
            text-align: center;
            margin-bottom: var(--space-md);
            font-size: 2rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-text-light);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto var(--space-lg);
        }
        .section-title-left { text-align: left; }
        .section-subtitle-left { text-align: left; margin-left: 0; }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            flex-wrap: nowrap;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #ffffff;
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .site-logo i { color: var(--color-secondary-light); font-size: 1.6rem; }
        .site-logo:hover { color: #ffffff; opacity: 0.9; }
        .site-logo span { color: var(--color-secondary-light); }

        .nav-card {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 0.25rem 0.5rem;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link i { font-size: 0.85rem; }
        .nav-link:hover, .nav-link.active {
            background: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }
        .nav-link.active { background: var(--color-secondary); color: #ffffff; box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3); }
        .nav-cta {
            background: var(--color-accent);
            color: #ffffff !important;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .nav-cta:hover { background: var(--color-accent-light); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3); }

        .mobile-menu-btn {
            display: none;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-menu-btn:hover { background: rgba(255, 255, 255, 0.2); }

        /* ===== 首屏 Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            color: #ffffff;
            padding: var(--space-xl) 0 var(--space-lg);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 1.2rem;
        }
        .hero-content h1 span { color: var(--color-secondary-light); }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .hero-buttons { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
        .hero-buttons .btn { padding: 0.8rem 2rem; font-size: 1rem; }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-card-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
            width: 100%;
            max-width: 480px;
        }
        .hero-stat-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-md);
            padding: 1.2rem 1rem;
            text-align: center;
            transition: all var(--transition);
        }
        .hero-stat-card:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-2px); }
        .hero-stat-card .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-secondary-light);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-card .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.3rem;
        }
        .hero-stat-card .icon { font-size: 1.6rem; color: var(--color-accent-light); margin-bottom: 0.4rem; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary { background: var(--color-secondary); color: #ffffff; border-color: var(--color-secondary); }
        .btn-primary:hover { background: var(--color-secondary-dark); border-color: var(--color-secondary-dark); color: #ffffff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25); }
        .btn-outline { background: transparent; color: #ffffff; border-color: rgba(255, 255, 255, 0.4); }
        .btn-outline:hover { background: rgba(255, 255, 255, 0.10); border-color: #ffffff; color: #ffffff; transform: translateY(-1px); }
        .btn-accent { background: var(--color-accent); color: #ffffff; border-color: var(--color-accent); }
        .btn-accent:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); color: #ffffff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(16, 185, 129, 0.25); }
        .btn-lg { padding: 0.9rem 2.4rem; font-size: 1.05rem; border-radius: var(--radius-md); }
        .btn-sm { padding: 0.4rem 1rem; font-size: 0.85rem; }
        .btn:focus-visible { outline: 3px solid var(--color-secondary); outline-offset: 2px; }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--color-border); }
        .card-body { padding: 1.5rem; }
        .card-image { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--color-primary); }
        .card-title a { color: inherit; }
        .card-title a:hover { color: var(--color-secondary); }
        .card-text { color: var(--color-text-light); font-size: 0.95rem; line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: 1rem; font-size: 0.85rem; color: var(--color-text-lighter); margin-top: 0.8rem; }
        .card-meta i { margin-right: 0.3rem; }
        .card-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--color-bg-alt);
            color: var(--color-primary-light);
        }
        .card-tag-accent { background: rgba(16, 185, 129, 0.12); color: var(--color-accent); }
        .card-tag-blue { background: rgba(59, 130, 246, 0.12); color: var(--color-secondary); }

        /* ===== 分类入口卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-md);
        }
        .category-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: var(--color-border); }
        .category-card .icon {
            font-size: 2.8rem;
            color: var(--color-secondary);
            margin-bottom: 1rem;
            display: block;
        }
        .category-card h3 { font-size: 1.4rem; margin-bottom: 0.5rem; }
        .category-card p { color: var(--color-text-light); font-size: 0.95rem; margin-bottom: 1.2rem; }
        .category-card .btn { margin-top: 0.5rem; }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: var(--space-md);
        }
        .news-item .card-body { padding: 1.2rem 1.5rem; }
        .news-item .card-title { font-size: 1.05rem; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: var(--color-text-light);
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .news-empty i { font-size: 2rem; color: var(--color-text-lighter); margin-bottom: 0.8rem; display: block; }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .stat-item:hover { background: rgba(255, 255, 255, 0.10); transform: translateY(-2px); }
        .stat-item .number { font-size: 2.6rem; font-weight: 800; color: var(--color-secondary-light); display: block; }
        .stat-item .label { font-size: 0.95rem; color: rgba(255, 255, 255, 0.65); margin-top: 0.4rem; }
        .stat-item .icon { font-size: 1.8rem; color: var(--color-accent-light); margin-bottom: 0.6rem; display: block; }

        /* ===== 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
            counter-reset: step;
        }
        .step-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .step-card .step-number {
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--color-secondary);
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-card h4 { font-size: 1.15rem; margin-bottom: 0.5rem; }
        .step-card p { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            border: none;
        }
        .faq-question i { color: var(--color-secondary); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
            color: #ffffff;
        }
        .cta-section h2 { color: #ffffff; font-size: 2rem; margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255, 255, 255, 0.75); max-width: 560px; margin: 0 auto 1.5rem; font-size: 1.05rem; }
        .cta-section .btn { margin: 0 0.4rem; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-md);
            margin-bottom: var(--space-md);
        }
        .footer-brand .site-logo { margin-bottom: 0.8rem; font-size: 1.3rem; }
        .footer-brand p { font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
        .footer-col h5 { color: #ffffff; font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { color: rgba(255, 255, 255, 0.6); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: #ffffff; }
        .footer-col ul li a i { width: 1.2rem; margin-right: 0.3rem; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--space-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a { color: rgba(255, 255, 255, 0.6); }
        .footer-bottom a:hover { color: #ffffff; }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--color-bg-alt);
            color: var(--color-primary-light);
        }
        .badge-primary { background: rgba(59, 130, 246, 0.12); color: var(--color-secondary); }
        .badge-accent { background: rgba(16, 185, 129, 0.12); color: var(--color-accent); }
        .badge-warning { background: rgba(245, 158, 11, 0.12); color: #d97706; }

        /* ===== 分隔线 ===== */
        .divider { border: none; height: 1px; background: var(--color-border); margin: var(--space-md) 0; }
        .divider-light { background: rgba(255, 255, 255, 0.08); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: var(--space-md); text-align: center; }
            .hero-content p { margin-left: auto; margin-right: auto; }
            .hero-buttons { justify-content: center; }
            .hero-card-grid { margin: 0 auto; max-width: 400px; }
            .news-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .section { padding: var(--space-md) 0; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 1rem; }
            .hero { padding: var(--space-lg) 0; }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-card-grid { grid-template-columns: 1fr 1fr; max-width: 360px; }
            .hero-stat-card .number { font-size: 1.5rem; }

            .nav-card { display: none; }
            .mobile-menu-btn { display: block; }
            .nav-card.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--color-primary);
                padding: 0.8rem;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                box-shadow: var(--shadow-lg);
                gap: 0.3rem;
                backdrop-filter: none;
                border: none;
            }
            .nav-card.open .nav-link { width: 100%; justify-content: center; padding: 0.7rem 1rem; }
            .header-inner { position: relative; }

            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; gap: var(--space-sm); }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { padding: var(--space-md) var(--space-sm); }
            .cta-section h2 { font-size: 1.5rem; }
            .hero-buttons .btn { width: 100%; }
            .hero-stat-card { padding: 0.8rem; }
        }

        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.6rem; }
            .hero-card-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
            .hero-stat-card .number { font-size: 1.3rem; }
            .hero-stat-card .label { font-size: 0.75rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
            .stat-item { padding: 1.2rem 0.8rem; }
            .stat-item .number { font-size: 2rem; }
            .category-card { padding: 1.8rem 1.2rem; }
            .btn-lg { padding: 0.7rem 1.6rem; font-size: 0.95rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .text-left { text-align: left; }
        .mt-sm { margin-top: var(--space-sm); }
        .mt-md { margin-top: var(--space-md); }
        .mb-sm { margin-bottom: var(--space-sm); }
        .mb-md { margin-bottom: var(--space-md); }
        .gap-sm { gap: var(--space-sm); }
        .gap-md { gap: var(--space-md); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }
        .relative { position: relative; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* Foundation 覆盖 */
        .grid-container { max-width: var(--max-width); padding-left: var(--space-sm); padding-right: var(--space-sm); }
        .grid-x { margin-left: -0.5rem; margin-right: -0.5rem; }
        .cell { padding: 0 0.5rem; }
        .button { transition: all var(--transition); }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-secondary: #475569;
            --text-weak: #94a3b8;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 8px 32px rgba(0,0,0,0.10);
            --transition: 0.25s ease;
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* Header / Nav */
        .site-header {
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky; top: 0; z-index: 100;
            height: var(--nav-height);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--nav-height);
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.6rem; font-weight: 800; color: var(--text);
            letter-spacing: -0.5px;
        }
        .site-logo i { color: var(--primary); font-size: 1.4rem; }
        .site-logo span { color: var(--primary); font-weight: 700; }
        .nav-card {
            display: flex; align-items: center; gap: 4px;
            background: var(--bg-alt);
            padding: 4px 6px;
            border-radius: 40px;
            border: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }
        .nav-link {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: 30px;
            font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); white-space: nowrap;
        }
        .nav-link i { font-size: 0.85rem; }
        .nav-link:hover { background: var(--primary-light); color: var(--primary); }
        .nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(37,99,235,0.3); }
        .nav-link.nav-cta {
            background: var(--accent); color: #fff; font-weight: 600;
            box-shadow: 0 4px 12px rgba(245,158,11,0.3);
        }
        .nav-link.nav-cta:hover { background: var(--accent-dark); transform: scale(1.02); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text); cursor: pointer; padding: 8px; border-radius: var(--radius-sm); }
        .nav-toggle:hover { background: var(--bg-alt); }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 80px 0 60px;
            margin-bottom: 0;
            position: relative;
        }
        .article-hero::after {
            content: '';
            position: absolute; inset: 0;
            background: repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0px, rgba(255,255,255,0.02) 20px, transparent 20px, transparent 40px);
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero .breadcrumb {
            display: flex; align-items: center; gap: 8px;
            font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 20px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb i { font-size: 0.7rem; }
        .article-hero h1 {
            font-size: 2.4rem; font-weight: 800; color: #fff;
            line-height: 1.25; max-width: 800px; margin-bottom: 16px;
        }
        .article-hero .meta {
            display: flex; flex-wrap: wrap; gap: 16px 24px;
            color: rgba(255,255,255,0.7); font-size: 0.9rem;
        }
        .article-hero .meta i { margin-right: 6px; }
        .article-hero .meta .badge {
            background: var(--primary); color: #fff; padding: 2px 14px;
            border-radius: 20px; font-size: 0.8rem; font-weight: 600;
        }

        /* Article Content */
        .article-main {
            background: var(--bg);
            padding: 48px 0 80px;
        }
        .article-layout {
            display: grid; grid-template-columns: 1fr 320px; gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.85; color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.4em; }
        .article-body .content h2 {
            font-size: 1.5rem; font-weight: 700; margin: 2em 0 0.8em; color: var(--text);
        }
        .article-body .content h3 {
            font-size: 1.2rem; font-weight: 600; margin: 1.6em 0 0.6em; color: var(--text-secondary);
        }
        .article-body .content ul, .article-body .content ol {
            margin: 1em 0; padding-left: 1.6em;
        }
        .article-body .content ul li { list-style: disc; margin-bottom: 0.4em; }
        .article-body .content ol li { list-style: decimal; margin-bottom: 0.4em; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px; margin: 1.6em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content a { color: var(--primary); font-weight: 500; text-decoration: underline; }
        .article-body .content img { margin: 1.6em auto; border-radius: var(--radius-sm); box-shadow: var(--shadow); }
        .article-body .content .highlight {
            background: var(--bg-alt); padding: 1px 6px; border-radius: 4px;
            font-weight: 500;
        }
        .article-footer-meta {
            margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border);
            display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center;
        }
        .article-footer-meta .tags {
            display: flex; flex-wrap: wrap; gap: 8px;
        }
        .article-footer-meta .tags .tag {
            background: var(--bg-alt); padding: 4px 14px; border-radius: 20px;
            font-size: 0.8rem; color: var(--text-secondary); border: 1px solid var(--border);
        }
        .article-footer-meta .share {
            display: flex; gap: 8px; align-items: center;
        }
        .article-footer-meta .share a {
            width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
            border-radius: 50%; background: var(--bg-alt); color: var(--text-secondary);
            border: 1px solid var(--border); transition: var(--transition);
        }
        .article-footer-meta .share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        /* Sidebar */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-card h4 {
            font-size: 1.1rem; font-weight: 700; margin-bottom: 16px;
            display: flex; align-items: center; gap: 8px;
        }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-card ul li { margin-bottom: 10px; }
        .sidebar-card ul li a {
            display: flex; align-items: center; gap: 10px;
            color: var(--text-secondary); font-size: 0.92rem; padding: 6px 0;
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a i { color: var(--text-weak); font-size: 0.7rem; }
        .sidebar-card .card-cta {
            margin-top: 16px; text-align: center;
        }
        .sidebar-card .card-cta a {
            display: inline-block; background: var(--primary); color: #fff;
            padding: 10px 28px; border-radius: 30px; font-weight: 600;
            box-shadow: 0 4px 12px rgba(37,99,235,0.25);
        }
        .sidebar-card .card-cta a:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.35); }

        /* Related Posts */
        .related-section {
            background: var(--bg-alt);
            padding: 64px 0;
            border-top: 1px solid var(--border);
        }
        .related-section h2 {
            font-size: 1.6rem; font-weight: 700; margin-bottom: 32px; text-align: center;
        }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card .rel-cat {
            font-size: 0.75rem; color: var(--primary); font-weight: 600; text-transform: uppercase;
            letter-spacing: 0.5px; margin-bottom: 8px;
        }
        .related-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
        .related-card h3 a { color: var(--text); }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

        /* CTA Section */
        .article-cta {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 64px 0; text-align: center;
        }
        .article-cta h2 {
            font-size: 1.8rem; font-weight: 700; color: #fff; margin-bottom: 12px;
        }
        .article-cta p {
            color: rgba(255,255,255,0.7); font-size: 1.05rem; margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto;
        }
        .article-cta .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .article-cta .btn {
            padding: 14px 36px; border-radius: 40px; font-weight: 600; font-size: 1rem;
            transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
        }
        .article-cta .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(37,99,235,0.35); }
        .article-cta .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(37,99,235,0.5); }
        .article-cta .btn-outline { border: 2px solid rgba(255,255,255,0.3); color: #fff; background: transparent; }
        .article-cta .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        /* Not Found */
        .not-found-box {
            text-align: center; padding: 80px 20px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-weak); margin-bottom: 16px; }
        .not-found-box h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box a { display: inline-block; background: var(--primary); color: #fff; padding: 12px 32px; border-radius: 30px; font-weight: 600; }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .site-logo { color: #fff; font-size: 1.4rem; margin-bottom: 12px; justify-content: flex-start; }
        .footer-brand .site-logo i { color: var(--primary); }
        .footer-brand .site-logo span { color: var(--primary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 360px; color: rgba(255,255,255,0.6); }
        .footer-col h5 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; display: flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: #fff; }
        .footer-col ul li a i { width: 16px; color: var(--primary); font-size: 0.8rem; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 24px 0; font-size: 0.85rem; color: rgba(255,255,255,0.4);
            flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .article-hero { padding: 60px 0 40px; }
            .article-hero h1 { font-size: 1.7rem; }
            .nav-card { display: none; }
            .nav-card.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px; border-radius: 0; box-shadow: 0 8px 24px rgba(0,0,0,0.08); gap: 4px; }
            .nav-card.open .nav-link { width: 100%; justify-content: center; padding: 12px; }
            .nav-toggle { display: block; }
            .article-body { padding: 24px; }
            .article-body .content { font-size: 1rem; }
            .article-hero .meta { flex-direction: column; gap: 8px; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-body { padding: 16px; }
            .article-hero { padding: 40px 0 28px; }
            .site-header .container { padding: 0 12px; }
            .container { padding: 0 12px; }
            .article-cta h2 { font-size: 1.3rem; }
            .article-cta .btn { width: 100%; justify-content: center; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #2563eb;
            --color-primary-dark: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-primary-bg: #eef2ff;
            --color-secondary: #f59e0b;
            --color-secondary-dark: #d97706;
            --color-accent: #10b981;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #0f172a;
            --color-text-weak: #475569;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-footer-bg: #0f172a;
            --color-footer-text: #cbd5e1;
            --color-footer-heading: #f1f5f9;
            --color-card-shadow: rgba(15, 23, 42, 0.06);
            --color-card-shadow-hover: rgba(15, 23, 42, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px var(--color-card-shadow);
            --shadow-md: 0 4px 16px var(--color-card-shadow);
            --shadow-lg: 0 12px 40px var(--color-card-shadow-hover);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 3.5rem;
            --space-xl: 5rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            line-height: 1.3;
            color: var(--color-text);
            font-weight: 700;
        }
        p {
            margin-top: 0;
            color: var(--color-text-weak);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-sm);
        }
        @media screen and (min-width: 768px) {
            .container {
                padding: 0 var(--space-md);
            }
        }
        @media screen and (min-width: 1024px) {
            .container {
                padding: 0 var(--space-lg);
            }
        }

        /* ===== 导航 - 卡片化导航面板 ===== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.92);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
            flex-wrap: nowrap;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--color-primary);
            font-size: 1.75rem;
        }
        .site-logo span {
            color: var(--color-primary);
        }
        .site-logo:hover {
            color: var(--color-text);
        }
        .nav-card {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            background: var(--color-bg);
            padding: 0.35rem 0.5rem;
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border-light);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.02);
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-card::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition);
            white-space: nowrap;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-link i {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            transition: color var(--transition);
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-bg);
        }
        .nav-link:hover i {
            color: var(--color-primary);
        }
        .nav-link.active {
            background: var(--color-primary);
            color: #ffffff;
            box-shadow: 0 2px 12px rgba(37, 99, 235, 0.3);
        }
        .nav-link.active i {
            color: #ffffff;
        }
        .nav-link.nav-cta {
            background: var(--color-secondary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(245, 158, 11, 0.3);
        }
        .nav-link.nav-cta i {
            color: #ffffff;
        }
        .nav-link.nav-cta:hover {
            background: var(--color-secondary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--color-bg);
        }
        @media screen and (max-width: 820px) {
            .site-header .container {
                flex-wrap: wrap;
                gap: 0.5rem;
            }
            .nav-card {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 0.35rem 0.5rem;
                border-radius: var(--radius-md);
                overflow-x: auto;
            }
            .nav-link {
                padding: 0.4rem 0.8rem;
                font-size: 0.85rem;
                flex-shrink: 0;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media screen and (max-width: 520px) {
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
            .nav-link {
                padding: 0.35rem 0.65rem;
                font-size: 0.8rem;
            }
            .nav-link i {
                font-size: 0.8rem;
            }
        }

        /* ===== 页面标题区 ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--color-primary-bg) 0%, #ffffff 100%);
            padding: var(--space-lg) 0 var(--space-md);
            border-bottom: 1px solid var(--color-border-light);
        }
        .page-hero .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            color: var(--color-text);
        }
        .page-hero h1 i {
            color: var(--color-primary);
            margin-right: 0.5rem;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin-bottom: 1rem;
        }
        .page-hero .breadcrumb a {
            color: var(--color-text-weak);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .page-hero .breadcrumb span {
            color: var(--color-text-weak);
        }
        .page-hero .subtitle {
            max-width: 700px;
            font-size: 1.15rem;
            color: var(--color-text-weak);
            line-height: 1.8;
        }
        @media screen and (max-width: 768px) {
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero .subtitle {
                font-size: 1rem;
            }
        }
        @media screen and (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-xl) 0;
        }
        .section-alt {
            background: var(--color-surface);
        }
        .section-dark {
            background: var(--color-footer-bg);
            color: #ffffff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: #ffffff;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-lg);
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .section-header h2 i {
            color: var(--color-primary);
            margin-right: 0.4rem;
        }
        .section-header .lead {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.1rem;
            color: var(--color-text-weak);
        }
        .section-dark .section-header .lead {
            color: var(--color-footer-text);
        }
        @media screen and (max-width: 768px) {
            .section {
                padding: var(--space-lg) 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }
        @media screen and (max-width: 520px) {
            .section {
                padding: var(--space-md) 0;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== 文章卡片网格 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--space-md);
        }
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-bg);
        }
        .article-card .card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg);
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-card:hover .card-image img {
            transform: scale(1.05);
        }
        .article-card .card-image .badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: var(--color-primary);
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius-xl);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .article-card .card-image .badge.hot {
            background: #ef4444;
        }
        .article-card .card-image .badge.new {
            background: var(--color-accent);
        }
        .article-card .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 0.6rem;
        }
        .article-card .card-meta i {
            margin-right: 0.25rem;
        }
        .article-card .card-meta .tag {
            background: var(--color-primary-bg);
            color: var(--color-primary);
            padding: 0.15rem 0.6rem;
            border-radius: var(--radius-xl);
            font-weight: 500;
            font-size: 0.75rem;
        }
        .article-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .article-card h3 a {
            color: var(--color-text);
        }
        .article-card h3 a:hover {
            color: var(--color-primary);
        }
        .article-card .excerpt {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 1rem;
        }
        .article-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.75rem;
            border-top: 1px solid var(--color-border-light);
        }
        .article-card .card-footer .read-more {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .article-card .card-footer .read-more:hover {
            color: var(--color-primary-dark);
            gap: 0.6rem;
        }
        .article-card .card-footer .date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        @media screen and (max-width: 768px) {
            .article-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: var(--space-sm);
            }
            .article-card .card-body {
                padding: 1rem 1.25rem 1.25rem;
            }
        }
        @media screen and (max-width: 520px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 特色资讯 - 大卡片 ===== */
        .feature-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            margin-bottom: var(--space-md);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .feature-card .feature-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--color-bg);
        }
        .feature-card .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .feature-image img {
            transform: scale(1.04);
        }
        .feature-card .feature-body {
            padding: var(--space-md) var(--space-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-card .feature-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 0.75rem;
        }
        .feature-card .feature-meta .badge-lg {
            background: var(--color-primary);
            color: #fff;
            padding: 0.3rem 1rem;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: 600;
        }
        .feature-card .feature-meta .badge-lg.hot {
            background: #ef4444;
        }
        .feature-card h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .feature-card h3 a {
            color: var(--color-text);
        }
        .feature-card h3 a:hover {
            color: var(--color-primary);
        }
        .feature-card .feature-excerpt {
            font-size: 1rem;
            color: var(--color-text-weak);
            line-height: 1.8;
            margin-bottom: 1.25rem;
        }
        .feature-card .feature-footer {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .feature-card .feature-footer .btn {
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--color-primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .feature-card .feature-footer .btn:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .feature-card .feature-footer .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .feature-card .feature-footer .date-lg {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        @media screen and (max-width: 900px) {
            .feature-card {
                grid-template-columns: 1fr;
            }
            .feature-card .feature-image {
                aspect-ratio: 16/9;
            }
            .feature-card .feature-body {
                padding: var(--space-sm) var(--space-md);
            }
            .feature-card h3 {
                font-size: 1.3rem;
            }
        }
        @media screen and (max-width: 520px) {
            .feature-card .feature-body {
                padding: var(--space-sm);
            }
            .feature-card h3 {
                font-size: 1.15rem;
            }
            .feature-card .feature-footer {
                flex-wrap: wrap;
                gap: 0.75rem;
            }
        }

        /* ===== 热门标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
        }
        .tag-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.45rem 1.1rem;
            border-radius: var(--radius-xl);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition);
            cursor: pointer;
        }
        .tag-cloud .tag-item:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
        }
        .tag-cloud .tag-item i {
            font-size: 0.8rem;
        }
        .tag-cloud .tag-item.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        /* ===== 分类筛选 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            justify-content: center;
            margin-bottom: var(--space-md);
        }
        .filter-bar .filter-btn {
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-xl);
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-weak);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-bar .filter-btn:hover {
            background: var(--color-primary-bg);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-bar .filter-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 2px 12px rgba(37, 99, 235, 0.25);
        }
        .filter-bar .filter-btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: var(--space-lg);
        }
        .pagination {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            background: var(--color-surface);
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }
        .pagination .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.4rem;
            height: 2.4rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition);
            border: none;
            background: transparent;
            cursor: pointer;
        }
        .pagination .page-link:hover {
            background: var(--color-primary-bg);
            color: var(--color-primary);
        }
        .pagination .page-link.active {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .pagination .page-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .pagination .page-link.prev,
        .pagination .page-link.next {
            width: auto;
            padding: 0 0.8rem;
            gap: 0.3rem;
        }

        /* ===== 订阅区块 ===== */
        .subscribe-box {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            max-width: 720px;
            margin: 0 auto;
        }
        .subscribe-box h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .subscribe-box h3 i {
            color: var(--color-primary);
            margin-right: 0.4rem;
        }
        .subscribe-box p {
            color: var(--color-text-weak);
            margin-bottom: 1.5rem;
        }
        .subscribe-box .form-row {
            display: flex;
            gap: 0.75rem;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .subscribe-box .form-row input {
            flex: 1;
            min-width: 200px;
            padding: 0.75rem 1.25rem;
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border);
            font-size: 0.95rem;
            background: var(--color-bg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .subscribe-box .form-row input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        .subscribe-box .form-row .btn-submit {
            padding: 0.75rem 2rem;
            border-radius: var(--radius-xl);
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            white-space: nowrap;
        }
        .subscribe-box .form-row .btn-submit:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .subscribe-box .form-row .btn-submit:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        @media screen and (max-width: 520px) {
            .subscribe-box {
                padding: var(--space-md) var(--space-sm);
            }
            .subscribe-box .form-row input {
                min-width: 100%;
            }
            .subscribe-box .form-row .btn-submit {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: var(--space-xl) 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .site-logo {
            color: #ffffff;
            margin-bottom: 1rem;
        }
        .site-footer .footer-brand .site-logo span {
            color: var(--color-primary-light);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: var(--color-footer-text);
            max-width: 360px;
        }
        .site-footer .footer-col h5 {
            color: var(--color-footer-heading);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .site-footer .footer-col ul li a {
            color: var(--color-footer-text);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: color var(--transition), transform var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #ffffff;
            transform: translateX(3px);
        }
        .site-footer .footer-col ul li a i {
            font-size: 0.8rem;
            color: var(--color-primary-light);
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: var(--space-md) 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .site-footer .footer-bottom a {
            color: var(--color-footer-text);
        }
        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }
        @media screen and (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
        }
        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 滚动加载动画 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 附加工具 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: 1200px;
            padding-left: var(--space-sm);
            padding-right: var(--space-sm);
        }
        @media screen and (min-width: 768px) {
            .grid-container {
                padding-left: var(--space-md);
                padding-right: var(--space-md);
            }
        }
        @media screen and (min-width: 1024px) {
            .grid-container {
                padding-left: var(--space-lg);
                padding-right: var(--space-lg);
            }
        }
        .cell h3 {
            font-size: 1.15rem;
        }
        .button.primary {
            background: var(--color-primary);
            border-radius: var(--radius-xl);
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            transition: all var(--transition);
        }
        .button.primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3cf0;
            --primary-dark: #5228c8;
            --primary-light: #8b6cf7;
            --secondary: #f0b43c;
            --secondary-dark: #d99a20;
            --accent: #3cd4f0;
            --bg-body: #f8f7fc;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-dark-alt: #16213e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-light: #f0f0f8;
            --border-light: #e8e6f0;
            --border-card: #f0eef6;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(108, 60, 240, 0.06);
            --shadow-md: 0 4px 20px rgba(108, 60, 240, 0.10);
            --shadow-lg: 0 12px 40px rgba(108, 60, 240, 0.14);
            --shadow-hover: 0 16px 48px rgba(108, 60, 240, 0.20);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', 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;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 0.5rem 0;
            color: var(--text-primary);
        }

        p {
            margin: 0 0 1rem 0;
            color: var(--text-secondary);
        }

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

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

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
            padding: 0 24px;
        }

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

        .grid-x {
            margin: 0 -12px;
        }
        .cell {
            padding: 0 12px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(26, 26, 46, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(108, 60, 240, 0.15);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .site-logo i {
            font-size: 1.8rem;
            color: var(--secondary);
            transition: transform 0.3s ease;
        }
        .site-logo:hover i {
            transform: rotate(15deg) scale(1.1);
        }
        .site-logo:hover {
            color: #fff;
        }
        .site-logo span {
            color: var(--secondary);
            font-weight: 700;
        }

        /* Card-style navigation */
        .nav-card {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            padding: 6px 10px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            background: transparent;
        }
        .nav-link i {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
        }
        .nav-link:hover i {
            color: var(--secondary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 60, 240, 0.35);
        }
        .nav-link.active i {
            color: #fff;
        }

        .nav-link.nav-cta {
            background: var(--secondary);
            color: var(--text-primary);
            font-weight: 700;
            padding: 8px 20px;
            box-shadow: 0 4px 14px rgba(240, 180, 60, 0.30);
        }
        .nav-link.nav-cta i {
            color: var(--text-primary);
        }
        .nav-link.nav-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(240, 180, 60, 0.40);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 1.4rem;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            border-color: var(--secondary);
            color: var(--secondary);
        }

        @media (max-width: 820px) {
            .menu-toggle {
                display: block;
            }
            .nav-card {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(26, 26, 46, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                border: 1px solid rgba(108, 60, 240, 0.15);
                border-top: none;
                gap: 8px;
                box-shadow: var(--shadow-lg);
            }
            .nav-card.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-link.nav-cta {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .site-logo {
                font-size: 1.2rem;
            }
            .site-logo i {
                font-size: 1.4rem;
            }
            .nav-link {
                font-size: 0.85rem;
                padding: 8px 12px;
            }
        }

        /* ===== Hero Section ===== */
        .hero-guide {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 50%, #1a0a2e 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 60, 240, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-guide::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(60, 212, 240, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-guide .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .hero-guide h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .hero-guide h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .hero-guide .lead {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.70);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.10);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.80);
        }
        .hero-badge i {
            color: var(--secondary);
        }

        @media (max-width: 768px) {
            .hero-guide {
                padding: 60px 0 40px;
            }
            .hero-guide h1 {
                font-size: 2rem;
            }
            .hero-guide .lead {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .hero-guide h1 {
                font-size: 1.6rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            text-align: center;
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-dark .section-title {
            color: var(--text-light);
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.60);
        }
        .section-alt {
            background: #fff;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== Card Base ===== */
        .card-guide {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            padding: 24px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-guide:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-guide .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .card-guide h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-guide p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 16px;
        }
        .card-guide .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            margin-top: auto;
        }
        .card-guide .card-meta i {
            color: var(--primary-light);
        }
        .card-guide .tag {
            display: inline-block;
            background: rgba(108, 60, 240, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        /* ===== Guide Category Cards ===== */
        .guide-cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guide-cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            cursor: default;
        }
        .guide-cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .guide-cat-card .cat-icon {
            font-size: 2.6rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .guide-cat-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .guide-cat-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 1024px) {
            .guide-cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .guide-cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .guide-cat-card {
                padding: 20px 12px;
            }
            .guide-cat-card .cat-icon {
                font-size: 2rem;
            }
            .guide-cat-card h4 {
                font-size: 0.9rem;
            }
        }

        /* ===== Guide List ===== */
        .guide-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .guide-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 620px) {
            .guide-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Feature Block ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-item {
            text-align: center;
            padding: 20px;
        }
        .feature-item .feat-icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 16px;
            background: rgba(108, 60, 240, 0.08);
            width: 72px;
            height: 72px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: auto;
            margin-right: auto;
            transition: var(--transition);
        }
        .feature-item:hover .feat-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-item h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Timeline / Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(108, 60, 240, 0.25);
        }
        .process-step .step-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(108, 60, 240, 0.25);
            line-height: 1;
            margin-bottom: 8px;
        }
        .process-step h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 0;
        }
        .process-step .step-icon {
            font-size: 1.6rem;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        @media (max-width: 900px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-question .faq-toggle {
            color: var(--text-muted);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.active .faq-question {
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        @media (max-width: 620px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 180, 60, 0.10) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 16px 40px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(240, 180, 60, 0.30);
        }
        .cta-btn:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(240, 180, 60, 0.45);
            color: var(--text-primary);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-btn {
                font-size: 0.95rem;
                padding: 14px 28px;
            }
        }

        /* ===== Footer (Shared) ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 60px 0 20px;
            border-top: 1px solid rgba(108, 60, 240, 0.12);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
            justify-content: flex-start;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-top: 8px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            transform: translateX(3px);
        }
        .footer-col ul li a i {
            font-size: 0.75rem;
            color: var(--primary-light);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .gap-1 {
            gap: 8px;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 1024px) {
            .hero-guide h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 520px) {
            .hero-guide {
                padding: 40px 0 32px;
            }
            .hero-guide h1 {
                font-size: 1.4rem;
            }
            .hero-guide h1 i {
                margin-right: 6px;
                font-size: 1.2rem;
            }
            .hero-badges {
                gap: 8px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card-guide {
                padding: 16px;
            }
            .card-guide h3 {
                font-size: 1.05rem;
            }
        }

        /* ===== Smooth scroll offset ===== */
        .anchor-offset {
            scroll-margin-top: calc(var(--nav-height) + 20px);
        }