/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #0f3a8e;
            --primary-light: #dbeafe;
            --secondary: #f59e0b;
            --secondary-light: #fef3c7;
            --accent: #10b981;
            --accent-light: #d1fae5;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-gray: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --spacing-section: 80px;
            --spacing-block: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea, select { font: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.75rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--spacing-section) 0; }
        .section-title { text-align: center; margin-bottom: var(--spacing-block); }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 600px; margin: 0 auto; color: var(--text-muted); font-size: 1.0625rem; }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            height: var(--header-h);
            display: flex; align-items: center;
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo { font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
        .logo i { color: var(--secondary); margin-right: 6px; }
        .logo:hover { color: var(--primary-dark); }
        .nav-main { display: flex; align-items: center; gap: 8px; }
        .nav-main a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.9375rem; font-weight: 500; color: var(--text-secondary);
            transition: all var(--transition); position: relative;
        }
        .nav-main a:hover { background: var(--bg-gray); color: var(--primary); }
        .nav-main a.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .search-toggle { padding: 8px 12px; border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 1.1rem; transition: all var(--transition); }
        .search-toggle:hover { background: var(--bg-gray); color: var(--primary); }
        .mobile-toggle { display: none; padding: 8px 10px; border-radius: var(--radius-sm); color: var(--text-primary); font-size: 1.3rem; }

        /* 移动端菜单 */
        @media (max-width: 768px) {
            .nav-main { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-white); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); padding: 16px; flex-direction: column; gap: 4px; }
            .nav-main.open { display: flex; }
            .nav-main a { width: 100%; padding: 12px 16px; }
            .mobile-toggle { display: block; }
            .search-toggle { display: none; }
        }
        @media (max-width: 520px) {
            .logo { font-size: 1.1rem; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 540px; display: flex; align-items: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center; opacity: 0.25;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 680px; }
        .hero-content h1 { color: var(--text-white); font-size: 3rem; line-height: 1.2; margin-bottom: 20px; }
        .hero-content h1 span { color: var(--secondary); }
        .hero-content p { color: rgba(255,255,255,0.75); font-size: 1.125rem; margin-bottom: 32px; max-width: 540px; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem; transition: all var(--transition); }
        .btn-primary { background: var(--primary); color: var(--text-white); }
        .btn-primary:hover { background: var(--primary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-secondary { background: rgba(255,255,255,0.12); color: var(--text-white); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.2); }
        .btn-secondary:hover { background: rgba(255,255,255,0.2); color: var(--text-white); transform: translateY(-2px); }
        .btn-accent { background: var(--accent); color: var(--text-white); }
        .btn-accent:hover { background: #059669; color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
        .hero-stats .stat { text-align: center; }
        .hero-stats .stat-number { font-size: 2rem; font-weight: 800; color: var(--text-white); }
        .hero-stats .stat-label { font-size: 0.875rem; color: rgba(255,255,255,0.55); margin-top: 4px; }
        @media (max-width: 768px) {
            .hero { min-height: 440px; }
            .hero-content h1 { font-size: 2.1rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: 24px; margin-top: 32px; }
            .hero-stats .stat-number { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.75rem; }
            .btn { padding: 12px 24px; font-size: 0.9375rem; }
        }

        /* ===== 核心板块 ===== */
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; }
        .intro-text h2 { margin-bottom: 16px; }
        .intro-text p { margin-bottom: 16px; font-size: 1.0625rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
        .intro-feature { display: flex; align-items: flex-start; gap: 12px; padding: 16px; background: var(--bg-gray); border-radius: var(--radius-sm); }
        .intro-feature i { color: var(--accent); font-size: 1.25rem; margin-top: 2px; }
        .intro-feature span { font-size: 0.9375rem; font-weight: 500; }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image img { height: 280px; }
        }
        @media (max-width: 520px) {
            .intro-features { grid-template-columns: 1fr; }
        }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .category-card {
            background: var(--bg-white); border-radius: var(--radius); padding: 32px 24px;
            text-align: center; border: 1px solid var(--border); transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .category-card .icon { width: 60px; height: 60px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.5rem; color: var(--primary); }
        .category-card h3 { font-size: 1.125rem; margin-bottom: 8px; }
        .category-card p { font-size: 0.9375rem; color: var(--text-muted); margin-bottom: 16px; }
        .category-card .tag { display: inline-block; padding: 4px 14px; border-radius: 20px; background: var(--secondary-light); color: var(--secondary); font-size: 0.8125rem; font-weight: 600; }
        @media (max-width: 768px) {
            .category-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .category-grid { grid-template-columns: 1fr; }
        }

        /* ===== 最新资讯 ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .news-card {
            background: var(--bg-white); border-radius: var(--radius); overflow: hidden;
            border: 1px solid var(--border); transition: all var(--transition); box-shadow: var(--shadow);
            display: flex; flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .news-card-img { height: 200px; overflow: hidden; }
        .news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
        .news-card:hover .news-card-img img { transform: scale(1.05); }
        .news-card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .news-card-body .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 8px; }
        .news-card-body .meta .cat { padding: 2px 12px; border-radius: 12px; background: var(--primary-light); color: var(--primary); font-weight: 600; }
        .news-card-body h3 { font-size: 1.125rem; margin-bottom: 8px; flex: 1; }
        .news-card-body h3 a { color: var(--text-primary); }
        .news-card-body h3 a:hover { color: var(--primary); }
        .news-card-body p { font-size: 0.9375rem; color: var(--text-muted); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card-body .read-more { font-weight: 600; font-size: 0.875rem; color: var(--primary); display: flex; align-items: center; gap: 6px; }
        .news-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.0625rem; background: var(--bg-white); border-radius: var(--radius); border: 1px dashed var(--border); }
        @media (max-width: 768px) {
            .news-grid { grid-template-columns: 1fr; }
        }

        /* ===== 数据/流程 ===== */
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .step-card { text-align: center; padding: 32px 16px; background: var(--bg-white); border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; }
        .step-card .step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: var(--text-white); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.25rem; margin: 0 auto 16px; }
        .step-card h4 { font-size: 1.0625rem; margin-bottom: 8px; }
        .step-card p { font-size: 0.875rem; color: var(--text-muted); }
        .step-card::after { content: '→'; position: absolute; right: -16px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--border); font-weight: 300; }
        .step-card:last-child::after { display: none; }
        @media (max-width: 768px) {
            .process-steps { grid-template-columns: 1fr 1fr; }
            .step-card::after { display: none; }
        }
        @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-white); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; font-size: 1.0625rem; color: var(--text-primary); }
        .faq-question i { color: var(--text-muted); transition: transform var(--transition); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 20px; display: none; font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.8; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; color: var(--text-white); }
        .cta-section h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.0625rem; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .btn { background: var(--text-white); color: var(--primary); }
        .cta-section .btn:hover { background: var(--secondary); color: var(--text-white); transform: translateY(-2px); }
        @media (max-width: 520px) {
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }

        /* ===== Footer ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 48px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { color: var(--text-white); font-size: 1.25rem; }
        .footer-brand p { font-size: 0.875rem; color: rgba(255,255,255,0.5); margin-top: 12px; max-width: 280px; }
        .footer-col h4 { color: var(--text-white); font-size: 0.9375rem; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 0.875rem; color: rgba(255,255,255,0.55); padding: 4px 0; transition: color var(--transition); }
        .footer-col a:hover { color: var(--text-white); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.8125rem; color: rgba(255,255,255,0.35); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 实用工具 ===== */
        .text-center { text-align: center; }
        .mb-16 { margin-bottom: 16px; }
        .mb-32 { margin-bottom: 32px; }
        .mt-16 { margin-top: 16px; }
        .badge { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8125rem; font-weight: 600; }
        .badge-primary { background: var(--primary-light); color: var(--primary); }
        .badge-accent { background: var(--accent-light); color: var(--accent); }
        .badge-secondary { background: var(--secondary-light); color: var(--secondary); }
        .divider { height: 1px; background: var(--border); margin: 0; }

        /* ===== 背景区块变体 ===== */
        .bg-gray-section { background: var(--bg-gray); }
        .bg-white-section { background: var(--bg-white); }

        /* 响应式微调 */
        @media (max-width: 1024px) {
            :root { --spacing-section: 60px; }
            h1 { font-size: 2.25rem; }
            h2 { font-size: 1.75rem; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 48px; }
            h1 { font-size: 1.85rem; }
            h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            :root { --spacing-section: 36px; --spacing-block: 32px; }
            h1 { font-size: 1.6rem; }
            h2 { font-size: 1.3rem; }
            .container { padding: 0 16px; }
        }

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

        /* 焦点可见性 */
        a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #0f3a8e;
            --primary-light: #e8f0fe;
            --primary-gradient: linear-gradient(135deg, #1a56db 0%, #0f3a8e 100%);
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-light: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --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, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.18);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --spacing-section: 80px;
            --container-max: 1200px;
            --header-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        .container-narrow {
            max-width: 880px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            background: transparent;
            color: var(--text-primary);
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 86, 219, 0.45);
            color: var(--text-white);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            border-color: var(--border-color);
            background: var(--bg-white);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
            color: #1e293b;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .badge-green {
            background: #e6f7e6;
            color: #16a34a;
        }
        .badge-red {
            background: #fee2e2;
            color: #dc2626;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo:hover {
            color: var(--text-primary);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 50px;
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a i {
            font-size: 14px;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-main a.active {
            color: var(--text-white);
            background: var(--primary-gradient);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
        }
        .nav-main a.active i {
            opacity: 1;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--border-light);
        }

        /* ===== Hero / 分类页横幅 ===== */
        .category-hero {
            padding: 80px 0 60px;
            background: var(--primary-gradient);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-body);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .hero-badges .badge {
            background: rgba(255, 255, 255, 0.18);
            color: var(--text-white);
            backdrop-filter: blur(4px);
            font-size: 13px;
            padding: 6px 18px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--text-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .badge {
            margin-bottom: 12px;
        }

        /* ===== 评测维度卡片 ===== */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .dimension-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .dimension-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .dimension-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 28px;
            color: var(--primary);
            transition: all var(--transition);
        }
        .dimension-card:hover .icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }
        .dimension-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .dimension-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .dimension-card .badge {
            margin-top: 14px;
        }

        /* ===== 评测流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .process-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
        }
        .process-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 内容卡片列表 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .article-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            border-radius: 0;
        }
        .article-card:hover .card-img img {
            transform: scale(1.06);
        }
        .article-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .article-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .article-card .card-body .meta i {
            margin-right: 4px;
        }
        .article-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .article-card .card-body h3 a {
            color: var(--text-primary);
        }
        .article-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .article-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .article-card .card-body .card-footer-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-card .card-body .card-footer-link i {
            transition: transform var(--transition);
        }
        .article-card:hover .card-body .card-footer-link i {
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn {
            background: var(--text-white);
            color: var(--primary);
            border-color: var(--text-white);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn:hover {
            background: var(--accent);
            color: #1e293b;
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: var(--text-white);
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom span {
            opacity: 0.8;
        }

        /* ===== 统计数字块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ===== 图文介绍块 ===== */
        .intro-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-block .text h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .intro-block .text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-block .text .btn {
            margin-top: 8px;
        }
        .intro-block .image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .dimension-grid,
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-block .image {
                order: -1;
            }
            .category-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --header-height: 64px;
            }

            .nav-main {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 24px;
                box-shadow: var(--shadow-lg);
                gap: 8px;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                padding: 12px 20px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }

            .category-hero {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }

            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }

            .dimension-grid,
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .num {
                font-size: 28px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .intro-block .text h2 {
                font-size: 24px;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .dimension-grid,
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .hero-badges .badge {
                font-size: 12px;
                padding: 4px 14px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .article-card .card-body h3 {
                font-size: 16px;
            }
            .faq-question {
                font-size: 14px;
                padding: 16px 18px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 18px 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
        }

/* roulang page: article */
:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --secondary: #059669;
    --secondary-light: #10b981;
    --accent: #f59e0b;
    --bg: #f0f4f8;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-white: #f8fafc;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
    --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --header-h: 72px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--primary-light); }

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 头部 & 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    height: var(--header-h);
    transition: box-shadow var(--transition);
}
.site-header.scrolled {
    box-shadow: 0 4px 30px rgba(0,0,0,0.06);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
}
.logo {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.3px;
    white-space: nowrap;
}
.logo i {
    font-size: 1.5rem;
    color: var(--secondary);
}
.logo:hover {
    color: var(--primary-dark);
}
.nav-main {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-main a {
    padding: 8px 18px;
    border-radius: var(--radius-xs);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-light);
    transition: all var(--transition);
    position: relative;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 7px;
}
.nav-main a i {
    font-size: 0.85rem;
}
.nav-main a:hover {
    background: rgba(30,64,175,0.06);
    color: var(--primary);
}
.nav-main a.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(30,64,175,0.25);
}
.nav-main a.active:hover {
    background: var(--primary-dark);
    color: #fff;
}
.mobile-toggle {
    display: none;
    background: none;
    font-size: 1.5rem;
    color: var(--text);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius-xs);
    transition: background var(--transition);
}
.mobile-toggle:hover {
    background: rgba(0,0,0,0.04);
}

/* ===== 文章 Banner ===== */
.article-banner {
    margin-top: var(--header-h);
    position: relative;
    min-height: 340px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1e40af 100%);
    overflow: hidden;
    padding: 60px 0 50px;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    opacity: 0.18;
    mix-blend-mode: overlay;
}
.article-banner .container {
    position: relative;
    z-index: 2;
    text-align: center;
}
.article-banner .breadcrumb {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}
.article-banner .breadcrumb a {
    color: rgba(255,255,255,0.7);
}
.article-banner .breadcrumb a:hover {
    color: #fff;
}
.article-banner .breadcrumb span {
    color: rgba(255,255,255,0.9);
}
.article-banner h1 {
    font-size: 2.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    max-width: 860px;
    margin: 0 auto 18px;
    letter-spacing: -0.5px;
}
.article-banner .meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    color: rgba(255,255,255,0.7);
    font-size: 0.92rem;
}
.article-banner .meta .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 16px;
    border-radius: 20px;
    background: rgba(255,255,255,0.12);
    color: #fff;
    font-weight: 500;
    font-size: 0.82rem;
    backdrop-filter: blur(4px);
}
.article-banner .meta .date i {
    margin-right: 5px;
}

/* ===== 文章正文 ===== */
.article-main {
    padding: 50px 0 60px;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}
.article-body {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 44px;
}
.article-body .article-content {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}
.article-body .article-content p {
    margin-bottom: 1.4em;
}
.article-body .article-content h2,
.article-body .article-content h3 {
    margin-top: 1.6em;
    margin-bottom: 0.6em;
    font-weight: 700;
    color: var(--primary-dark);
}
.article-body .article-content h2 { font-size: 1.6rem; }
.article-body .article-content h3 { font-size: 1.25rem; }
.article-body .article-content ul,
.article-body .article-content ol {
    margin-bottom: 1.4em;
    padding-left: 1.6em;
}
.article-body .article-content li {
    margin-bottom: 0.4em;
}
.article-body .article-content img {
    margin: 1.6em auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}
.article-body .article-content blockquote {
    border-left: 4px solid var(--primary-light);
    background: #f1f5f9;
    padding: 16px 24px;
    margin: 1.4em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-light);
    font-style: italic;
}
.article-body .article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.article-body .article-content a:hover {
    color: var(--secondary);
}
.article-not-found {
    text-align: center;
    padding: 60px 20px;
}
.article-not-found i {
    font-size: 3.6rem;
    color: var(--text-light);
    margin-bottom: 18px;
}
.article-not-found h2 {
    font-size: 1.8rem;
    color: var(--text);
    margin-bottom: 10px;
}
.article-not-found p {
    color: var(--text-light);
    margin-bottom: 24px;
}
.article-not-found .btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-xs);
    font-weight: 600;
    transition: all var(--transition);
}
.article-not-found .btn-back:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30,64,175,0.25);
}

/* ===== 侧边栏 ===== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px 22px;
}
.sidebar-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-card h3 i {
    color: var(--primary);
}
.sidebar-list {
    list-style: none;
}
.sidebar-list li {
    margin-bottom: 10px;
}
.sidebar-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-xs);
    background: var(--bg);
    font-size: 0.9rem;
    color: var(--text);
    transition: all var(--transition);
}
.sidebar-list a:hover {
    background: rgba(30,64,175,0.06);
    color: var(--primary);
    transform: translateX(4px);
}
.sidebar-list a i {
    color: var(--secondary);
    font-size: 0.8rem;
}
.sidebar-tag {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sidebar-tag a {
    padding: 5px 14px;
    border-radius: 20px;
    background: var(--bg);
    font-size: 0.82rem;
    color: var(--text-light);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.sidebar-tag a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ===== 文章标签 & 分享 ===== */
.article-footer-bar {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.article-tags span {
    padding: 4px 16px;
    border-radius: 20px;
    background: var(--bg);
    font-size: 0.82rem;
    color: var(--text-light);
    border: 1px solid var(--border);
}
.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
}
.article-share span {
    font-size: 0.88rem;
    color: var(--text-light);
}
.article-share a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text-light);
    transition: all var(--transition);
    border: 1px solid var(--border);
}
.article-share a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 50px 0 60px;
    background: var(--bg);
}
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 12px;
}
.section-header h2 {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-header h2 i {
    color: var(--secondary);
}
.section-header .more-link {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}
.section-header .more-link:hover {
    color: var(--secondary);
    gap: 10px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.related-card .card-img {
    height: 180px;
    overflow: hidden;
    position: relative;
}
.related-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .card-img img {
    transform: scale(1.06);
}
.related-card .card-img .card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 3px 14px;
    border-radius: 20px;
    background: rgba(30,64,175,0.85);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
}
.related-card .card-body {
    padding: 18px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-card .card-body h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card .card-body p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.related-card .card-body .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-light);
}
.related-card .card-body .card-meta i {
    margin-right: 4px;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 60px 0;
    background: var(--bg-card);
}
.faq-section .section-header {
    text-align: center;
    justify-content: center;
}
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition);
}
.faq-item:hover {
    border-color: var(--primary-light);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: var(--bg);
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    transition: all var(--transition);
    user-select: none;
    gap: 12px;
}
.faq-question:hover {
    background: rgba(30,64,175,0.04);
}
.faq-question i {
    color: var(--primary);
    font-size: 1.1rem;
    transition: transform var(--transition);
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}
.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    color: var(--text-light);
    line-height: 1.7;
}
.faq-item.active .faq-answer {
    padding: 0 24px 20px;
    max-height: 300px;
}

/* ===== CTA ===== */
.cta-section {
    padding: 70px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    opacity: 0.08;
    mix-blend-mode: overlay;
}
.cta-section .container {
    position: relative;
    z-index: 2;
    text-align: center;
}
.cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.cta-section p {
    font-size: 1.08rem;
    color: rgba(255,255,255,0.75);
    max-width: 640px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    border-radius: var(--radius-xs);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    cursor: pointer;
}
.cta-btn.primary {
    background: #fff;
    color: var(--primary);
}
.cta-btn.primary:hover {
    background: var(--secondary-light);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(5,150,105,0.30);
}
.cta-btn.outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.3);
}
.cta-btn.outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.08);
    transform: translateY(-3px);
}

/* ===== 页脚 ===== */
.site-footer {
    background: #0f172a;
    color: rgba(255,255,255,0.7);
    padding: 56px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 24px;
}
.footer-brand .logo {
    color: #fff;
    font-size: 1.35rem;
    margin-bottom: 14px;
}
.footer-brand .logo i {
    color: var(--secondary-light);
}
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.55);
    max-width: 360px;
}
.footer-col h4 {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    color: rgba(255,255,255,0.55);
    font-size: 0.88rem;
    margin-bottom: 10px;
    transition: all var(--transition);
}
.footer-col a:hover {
    color: var(--secondary-light);
    padding-left: 4px;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .article-banner h1 {
        font-size: 2.1rem;
    }
}
@media (max-width: 768px) {
    .nav-main {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(18px);
        flex-direction: column;
        padding: 16px 20px;
        gap: 6px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.4s ease;
        border-bottom: 1px solid var(--border);
    }
    .nav-main.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    .nav-main a {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-xs);
        font-size: 1rem;
    }
    .mobile-toggle {
        display: block;
    }
    .article-banner {
        min-height: 260px;
        padding: 40px 0 36px;
    }
    .article-banner h1 {
        font-size: 1.6rem;
    }
    .article-body {
        padding: 24px 20px;
    }
    .article-body .article-content {
        font-size: 0.98rem;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .related-card .card-img {
        height: 200px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-brand p {
        max-width: 100%;
    }
    .cta-section h2 {
        font-size: 1.5rem;
    }
    .section-header h2 {
        font-size: 1.35rem;
    }
    .faq-question {
        padding: 14px 18px;
        font-size: 0.95rem;
    }
    .article-banner .meta {
        font-size: 0.85rem;
        gap: 12px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .article-banner h1 {
        font-size: 1.3rem;
    }
    .article-body {
        padding: 18px 14px;
    }
    .article-footer-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
    .article-banner .meta {
        flex-direction: column;
        gap: 8px;
    }
    .logo {
        font-size: 1.1rem;
    }
    .logo i {
        font-size: 1.2rem;
    }
}

/* ===== 辅助 ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}