/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }
        *, *::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: 1.6; -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; }
        button, input, select, textarea { font-family: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

        /* ===== Header & Nav ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 12px 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }
        .logo i { font-size: 1.6rem; color: var(--accent); }
        .logo span { color: var(--text); font-weight: 300; }
        .nav-search {
            flex: 1;
            max-width: 480px;
            position: relative;
        }
        .nav-search input {
            width: 100%;
            padding: 10px 44px 10px 18px;
            border: 2px solid var(--border);
            border-radius: 40px;
            background: var(--bg);
            font-size: 0.95rem;
            transition: var(--transition);
            outline: none;
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: var(--bg-card);
            box-shadow: 0 0 0 4px var(--primary-light);
        }
        .nav-search button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-search button:hover { background: var(--primary-dark); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { background: var(--primary-light); color: var(--primary); }
        .nav-links a.active { background: var(--primary); color: #fff; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--text); cursor: pointer; padding: 4px; }

        @media (max-width: 820px) {
            .nav-search { max-width: 300px; }
            .nav-links a { padding: 6px 12px; font-size: 0.85rem; }
        }
        @media (max-width: 700px) {
            .header-inner { flex-wrap: wrap; }
            .logo { font-size: 1.2rem; }
            .nav-search { order: 3; max-width: 100%; flex-basis: 100%; }
            .nav-links { display: none; }
            .nav-links.open { display: flex; flex-basis: 100%; order: 4; flex-wrap: wrap; gap: 4px; padding-top: 8px; }
            .nav-toggle { display: block; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(37,99,235,0.25) 0%, transparent 60%);
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #e2e8f0;
            border: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 20px;
        }
        .hero-badge i { color: var(--accent); }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.15;
            letter-spacing: -1px;
            max-width: 700px;
            margin-bottom: 20px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.2rem;
            color: #cbd5e1;
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary-custom:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.35); color: #fff; }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: transparent;
            color: #e2e8f0;
            border: 2px solid rgba(255,255,255,0.25);
            border-radius: 40px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline-custom:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,0.06); }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat h3 { font-size: 2rem; font-weight: 700; color: #fff; }
        .hero-stat p { font-size: 0.9rem; color: #94a3b8; margin: 0; }

        @media (max-width: 768px) {
            .hero { padding: 70px 0 60px; min-height: auto; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; }
            .btn-primary-custom, .btn-outline-custom { width: 100%; justify-content: center; }
        }

        /* =====通用板块 ===== */
        .section { padding: 90px 0; }
        .section-alt { background: var(--bg-card); }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }
        .section-sub {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 50px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section { padding: 60px 0; }
            .section-title { font-size: 1.7rem; }
            .section-sub { font-size: 0.95rem; margin-bottom: 36px; }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
        @media (max-width: 992px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .card-body { padding: 28px; }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 16px;
            background: var(--primary);
        }
        .card-icon.accent { background: var(--accent); }
        .card-icon.green { background: #10b981; }
        .card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 10px; }
        .card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }
        .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 12px;
        }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-muted); margin-top: 14px; }
        .card-link { font-weight: 600; display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; }

        /* ===== 分类入口 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .category-card i { font-size: 2.2rem; color: var(--primary); margin-bottom: 12px; }
        .category-card h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
        .category-card p { font-size: 0.85rem; color: var(--text-light); margin: 0; }
        @media (max-width: 820px) { .category-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .category-grid { grid-template-columns: 1fr; } }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
        .stat-item h3 { font-size: 2.6rem; font-weight: 800; color: var(--primary); }
        .stat-item p { color: var(--text-light); font-size: 1rem; margin: 4px 0 0; }
        @media (max-width: 820px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr; } }

        /* ===== 流程 ===== */
        .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
        .step { text-align: center; position: relative; }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
        }
        .step h4 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
        .step p { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; max-width: 280px; margin: 0 auto; }
        .step::after {
            content: '';
            position: absolute;
            top: 28px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }
        .step:last-child::after { display: none; }
        @media (max-width: 820px) {
            .steps { grid-template-columns: 1fr; gap: 24px; }
            .step::after { display: none; }
            .step p { max-width: 100%; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            padding: 4px 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: var(--transition);
        }
        .faq-q:hover { color: var(--primary); }
        .faq-q i { transition: transform 0.3s; font-size: 0.9rem; color: var(--text-muted); }
        .faq-q.open i { transform: rotate(180deg); }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-a.open { max-height: 300px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; opacity: 0.9; max-width: 520px; margin: 0 auto 28px; }
        .cta-section .btn-primary-custom { background: #fff; color: var(--primary); }
        .cta-section .btn-primary-custom:hover { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(0,0,0,0.20); }
        @media (max-width: 640px) {
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { color: #fff; margin-bottom: 14px; }
        .footer-brand .logo span { color: #94a3b8; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; color: #94a3b8; }
        .footer-col h5 { color: #fff; font-weight: 600; margin-bottom: 16px; font-size: 1rem; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul a { color: #94a3b8; font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #64748b;
        }
        @media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 文章/内容列表 ===== */
        .post-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .post-card .card-img { height: 180px; }
        .post-card .card-body { padding: 20px; }
        .post-card h3 { font-size: 1.1rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card p { font-size: 0.9rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .empty-tip { text-align: center; padding: 40px 20px; color: var(--text-light); font-size: 1rem; background: var(--bg); border-radius: var(--radius-sm); grid-column: 1 / -1; }
        @media (max-width: 820px) { .post-list { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .post-list { grid-template-columns: 1fr; } }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c8cb;
            --primary-gradient: linear-gradient(135deg, #e63946 0%, #c1121f 100%);
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #ffb703;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1d3557;
            --text-dark: #1a1a2e;
            --text-body: #333333;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --border-light: #f0f0f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

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

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

        a:hover,
        a:focus-visible {
            color: var(--primary-dark);
        }

        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: var(--text-white);
            border-color: var(--primary);
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: var(--text-white);
        }

        .btn-outline:hover,
        .btn-outline:focus-visible {
            background: var(--text-white);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
            border-radius: var(--radius-lg);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }

        /* ===== 标签 / 徽章 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary-dark);
            transition: var(--transition);
        }

        .tag:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: var(--accent);
            color: var(--text-dark);
        }

        .badge-hot {
            background: #e63946;
            color: #fff;
        }

        .badge-new {
            background: #2a9d8f;
            color: #fff;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo i {
            font-size: 28px;
            color: var(--primary);
        }

        .logo span {
            color: var(--secondary);
            font-weight: 400;
        }

        .logo:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }

        .nav-search {
            flex: 1;
            max-width: 480px;
            min-width: 200px;
        }

        .nav-search form {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            border: 1px solid var(--border);
            transition: var(--transition);
            overflow: hidden;
        }

        .nav-search form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
            background: var(--bg-white);
        }

        .nav-search input {
            flex: 1;
            padding: 10px 18px;
            background: transparent;
            border: none;
            font-size: 14px;
            color: var(--text-dark);
            min-width: 0;
        }

        .nav-search input::placeholder {
            color: var(--text-light);
        }

        .nav-search button {
            padding: 10px 18px;
            background: transparent;
            color: var(--text-light);
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-search button:hover {
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            background: none;
            font-size: 24px;
            color: var(--text-dark);
            padding: 8px;
            border: none;
            cursor: pointer;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
        }

        .nav-links li a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .nav-links li a.active {
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }

        /* 移动端导航 */
        @media (max-width: 768px) {
            .nav-search {
                display: none;
            }

            .nav-toggle {
                display: block;
                order: 3;
            }

            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                border-bottom: 3px solid var(--primary);
                z-index: 999;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-links li a {
                padding: 12px 20px;
                font-size: 16px;
                width: 100%;
                text-align: center;
                border-radius: var(--radius-sm);
            }

            .header-inner {
                gap: 12px;
            }

            .logo {
                font-size: 20px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 18px;
            }

            .logo i {
                font-size: 22px;
            }

            .nav-links li a {
                padding: 10px 14px;
                font-size: 14px;
            }
        }

        /* ===== 分类页 Banner ===== */
        .category-banner {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            text-align: center;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(29, 53, 87, 0.88) 0%, rgba(230, 57, 70, 0.72) 100%);
            z-index: 1;
        }

        .category-banner .container {
            position: relative;
            z-index: 2;
        }

        .category-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-banner h1 i {
            margin-right: 12px;
            color: var(--accent);
        }

        .category-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .category-banner .banner-tags .tag {
            background: rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-size: 14px;
        }

        .category-banner .banner-tags .tag:hover {
            background: var(--text-white);
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .category-banner {
                padding: 70px 0 50px;
            }
            .category-banner h1 {
                font-size: 30px;
            }
            .category-banner p {
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 24px;
            }
            .category-banner p {
                font-size: 14px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .section-title h2 i {
            color: var(--primary);
            margin-right: 10px;
        }

        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-title .line {
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 26px;
            }
            .section-title p {
                font-size: 15px;
            }
        }

        /* ===== 分类简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-content h3 {
            font-size: 28px;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .intro-content p {
            font-size: 16px;
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .intro-content .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 28px;
        }

        .intro-content .stat-item {
            background: var(--bg-light);
            padding: 20px 16px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .intro-content .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .intro-content .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }

        .intro-content .stat-item .label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 4px;
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition);
        }

        .intro-image:hover img {
            transform: scale(1.04);
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-content h3 {
                font-size: 22px;
            }
            .intro-content .intro-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .intro-content .stat-item .num {
                font-size: 22px;
            }
            .intro-image img {
                height: 260px;
            }
        }

        @media (max-width: 520px) {
            .intro-content .intro-stats {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== 课程分类卡片 ===== */
        .courses-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .course-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .course-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .course-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .course-card:hover .card-img img {
            transform: scale(1.08);
        }

        .course-card .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
        }

        .course-card .card-body {
            padding: 24px 22px 26px;
        }

        .course-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .course-card .card-body h3 a {
            color: var(--text-dark);
        }

        .course-card .card-body h3 a:hover {
            color: var(--primary);
        }

        .course-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .course-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .course-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .course-card .card-meta i {
            color: var(--primary);
        }

        .course-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        .course-card .card-footer .price {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
        }

        .course-card .card-footer .price small {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-light);
        }

        @media (max-width: 992px) {
            .courses-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 576px) {
            .courses-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .course-card .card-img {
                height: 180px;
            }
            .course-card .card-body {
                padding: 18px 16px 20px;
            }
        }

        /* ===== 教练团队 ===== */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .team-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 20px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .team-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .team-card .avatar {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 16px;
            border: 4px solid var(--primary-light);
            transition: var(--transition);
        }

        .team-card:hover .avatar {
            border-color: var(--primary);
            transform: scale(1.05);
        }

        .team-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .team-card .title {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .team-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .team-card .social {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 14px;
        }

        .team-card .social a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 15px;
            transition: var(--transition);
        }

        .team-card .social a:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        @media (max-width: 992px) {
            .team-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 520px) {
            .team-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .team-card {
                padding: 24px 14px 18px;
            }
            .team-card .avatar {
                width: 70px;
                height: 70px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(29, 53, 87, 0.88);
            z-index: 1;
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }

        .stats-grid .stat-card {
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-4px);
        }

        .stats-grid .stat-card .num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }

        .stats-grid .stat-card .num i {
            font-size: 32px;
            margin-right: 6px;
            opacity: 0.8;
        }

        .stats-grid .stat-card .label {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 8px;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-grid .stat-card .num {
                font-size: 32px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid .stat-card {
                padding: 20px 12px;
            }
            .stats-grid .stat-card .num {
                font-size: 26px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item[open] summary {
            color: var(--primary);
            border-bottom: 1px solid var(--border-light);
        }

        .faq-item .answer {
            padding: 18px 24px 22px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .faq-item summary {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-item .answer {
                padding: 14px 18px 18px;
                font-size: 14px;
            }
        }

        /* ===== 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-3.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .logo i {
            color: var(--accent);
        }

        .site-footer .footer-brand .logo span {
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }

        .site-footer .footer-col h5 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .site-footer .footer-col ul li a i {
            width: 18px;
            text-align: center;
            color: var(--accent);
        }

        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-bottom i {
            color: var(--accent);
        }

        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 576px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 16px 0;
            font-size: 14px;
            color: var(--text-light);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb a {
            color: var(--text-light);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb span {
            color: var(--text-body);
            font-weight: 500;
        }

        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--border);
        }

        /* ===== 分页占位 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .pagination a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
        }

        .pagination .active {
            background: var(--primary-gradient);
            color: var(--text-white);
            border-color: var(--primary);
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #E85D3A;
            --primary-hover: #D04A2A;
            --primary-light: #FDF2EF;
            --secondary: #1E293B;
            --secondary-light: #334155;
            --accent: #3B82F6;
            --accent-hover: #2563EB;
            --success: #10B981;
            --warning: #F59E0B;
            --bg: #F8FAFC;
            --bg-alt: #F1F5F9;
            --bg-dark: #0F172A;
            --text: #1E293B;
            --text-light: #64748B;
            --text-white: #FFFFFF;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 12px 36px rgba(232, 93, 58, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, 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-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--secondary);
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .logo span {
            color: var(--primary);
            font-weight: 600;
        }
        .logo:hover {
            color: var(--secondary);
        }

        /* 搜索框 */
        .nav-search {
            flex: 1;
            max-width: 520px;
            margin: 0 12px;
        }
        .nav-search form {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 50px;
            border: 1.5px solid var(--border);
            transition: border-color var(--transition), box-shadow var(--transition);
            overflow: hidden;
        }
        .nav-search form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(232, 93, 58, 0.12);
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 18px;
            font-size: 0.95rem;
            color: var(--text);
            outline: none;
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-search button {
            background: transparent;
            border: none;
            padding: 10px 18px 10px 6px;
            color: var(--text-light);
            cursor: pointer;
            transition: color var(--transition);
            font-size: 1rem;
        }
        .nav-search button:hover {
            color: var(--primary);
        }

        /* 导航链接 */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
        }
        .nav-links li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .nav-links li a.active:hover {
            background: var(--primary-hover);
            color: var(--text-white);
        }

        /* 移动端菜单按钮 */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        @media (max-width: 768px) {
            .nav-search {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.25s ease;
                z-index: 99;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li a {
                padding: 12px 20px;
                border-radius: var(--radius-sm);
                font-size: 1.05rem;
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                gap: 12px;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 1.25rem;
            }
            .logo i {
                font-size: 1.15rem;
            }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 64px;
            background: var(--bg-dark) url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: var(--text-white);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.60) 60%, rgba(15, 23, 42, 0.40) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .article-banner .category-badge {
            display: inline-block;
            background: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
            color: #fff;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            max-width: 880px;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }
        .article-banner .meta i {
            margin-right: 6px;
        }
        .article-banner .meta span {
            display: flex;
            align-items: center;
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 56px 0 44px;
            }
            .article-banner h1 {
                font-size: 1.8rem;
            }
            .article-banner .meta {
                gap: 12px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 480px) {
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .article-banner {
                padding: 40px 0 32px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-content-wrap {
            padding: 48px 0 40px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-main {
            min-width: 0;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body h2,
        .article-body h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--secondary);
        }
        .article-body h2 {
            font-size: 1.55rem;
            border-bottom: 2px solid var(--border-light);
            padding-bottom: 8px;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body ul li {
            list-style: disc;
            margin-bottom: 0.3em;
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 0.3em;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--accent-hover);
        }
        .article-body .cms-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
        }
        .article-body .cms-empty i {
            font-size: 3rem;
            color: var(--border);
            margin-bottom: 16px;
            display: block;
        }
        .article-body .cms-empty a {
            display: inline-block;
            margin-top: 16px;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: background var(--transition);
        }
        .article-body .cms-empty a:hover {
            background: var(--primary-hover);
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--primary);
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            color: var(--text);
            font-size: 0.95rem;
            transition: color var(--transition);
            display: block;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud a {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-alt);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
        }
        .sidebar-card .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 24px 20px;
                font-size: 1rem;
            }
            .article-content-wrap {
                padding: 24px 0;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 文章信息栏 ===== */
        .article-info-bar {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 32px;
            margin-top: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-info-bar .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .article-info-bar .tags span {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 4px;
        }
        .article-info-bar .tags a {
            display: inline-block;
            padding: 4px 16px;
            background: var(--bg-alt);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
        }
        .article-info-bar .tags a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .article-info-bar .share {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .article-info-bar .share span {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .article-info-bar .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            font-size: 0.95rem;
        }
        .article-info-bar .share a:hover {
            background: var(--primary);
            color: #fff;
        }
        @media (max-width: 768px) {
            .article-info-bar {
                padding: 18px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 上下篇导航 ===== */
        .article-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
            color: var(--text);
        }
        .article-nav a:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: var(--text);
        }
        .article-nav a .direction {
            font-size: 0.8rem;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: block;
            margin-bottom: 4px;
        }
        .article-nav a .title {
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-nav a i {
            font-size: 1.2rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .article-nav .prev {
            text-align: left;
        }
        .article-nav .next {
            text-align: right;
            flex-direction: row-reverse;
        }
        @media (max-width: 768px) {
            .article-nav {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .article-nav a {
                padding: 14px 18px;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 48px 0 40px;
            background: var(--bg-alt);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 28px;
            text-align: center;
            color: var(--secondary);
        }
        .related-section .section-title i {
            color: var(--primary);
            margin-right: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
        }
        .related-card .card-body .cat {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
            margin-bottom: 6px;
        }
        .related-card .card-body h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h5 a {
            color: var(--secondary);
            transition: color var(--transition);
        }
        .related-card .card-body h5 a:hover {
            color: var(--primary);
        }
        .related-card .card-body .date {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card .card-img {
                height: 200px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.65) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            text-decoration: none;
        }
        .cta-section .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .cta-section .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 93, 58, 0.35);
        }
        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .cta-section .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 评论区（示意） ===== */
        .comments-section {
            padding: 40px 0;
        }
        .comments-section .section-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--secondary);
        }
        .comments-section .section-title i {
            color: var(--primary);
            margin-right: 8px;
        }
        .comment-form {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 32px;
        }
        .comment-form textarea {
            width: 100%;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 120px;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: var(--bg);
            color: var(--text);
        }
        .comment-form textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(232, 93, 58, 0.10);
            outline: none;
            background: #fff;
        }
        .comment-form .form-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .comment-form .form-footer .hint {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .comment-form .btn-submit {
            padding: 10px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .comment-form .btn-submit:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }
        @media (max-width: 768px) {
            .comment-form {
                padding: 20px;
            }
            .comment-form .form-footer {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .logo span {
            color: var(--primary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom i {
            margin-right: 4px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.3rem;
            }
            .article-body {
                padding: 16px;
                font-size: 0.95rem;
            }
            .related-card .card-img {
                height: 180px;
            }
            .cta-section h2 {
                font-size: 1.25rem;
            }
            .cta-section .btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
        }