/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #2d8a4e;
            --primary-dark: #1e6b38;
            --primary-light: #e8f5e9;
            --primary-gradient: linear-gradient(135deg, #2d8a4e 0%, #1e6b38 100%);
            --accent: #f5a623;
            --accent-light: #fef3e2;
            --accent-gradient: linear-gradient(135deg, #f5a623 0%, #e8941a 100%);
            --bg: #f9fafb;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f0;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-accent: 0 4px 20px rgba(45, 138, 78, 0.25);
            --transition: 0.25s ease;
            --nav-width: 260px;
            --header-height: 70px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: 0.75rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 50px; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p { max-width: 600px; margin: 12px auto 0; font-size: 1.1rem; }
        .text-center { text-align: center; }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: var(--accent-light);
            color: #b8731a;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(45, 138, 78, 0.35);
            color: var(--text-white);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent-gradient);
            color: var(--text-white);
            box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 166, 35, 0.4);
            color: var(--text-white);
        }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

        /* ===== Layout: Left Nav + Content ===== */
        .page-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            width: var(--nav-width);
            background: var(--bg-white);
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 20px;
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-brand .brand-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-gradient);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
        }
        .sidebar-brand .brand-text span { color: var(--primary); }
        .sidebar-nav { flex: 1; }
        .sidebar-nav .nav-label {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            color: var(--text-light);
            font-weight: 600;
            padding: 0 12px 8px;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 1.05rem; color: var(--text-light); transition: var(--transition); }
        .sidebar-nav .nav-item:hover { background: var(--primary-light); color: var(--primary-dark); }
        .sidebar-nav .nav-item:hover i { color: var(--primary); }
        .sidebar-nav .nav-item.active {
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: var(--shadow-accent);
        }
        .sidebar-nav .nav-item.active i { color: var(--text-white); }
        .sidebar-footer {
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.8rem;
            color: var(--text-light);
            text-align: center;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            z-index: 999;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sm);
        }
        .mobile-header .brand-text {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
        }
        .mobile-header .brand-text span { color: var(--primary); }
        .mobile-header .menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .mobile-header .menu-toggle:hover { background: var(--primary); color: white; }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.4);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .sidebar-overlay.show { opacity: 1; }
        .sidebar.open { transform: translateX(0); }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            padding: 100px 60px;
            background: linear-gradient(135deg, rgba(26,26,46,0.7) 0%, rgba(45,138,78,0.6) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            margin: 20px 20px 0;
            min-height: 480px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245,166,35,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 1; max-width: 650px; }
        .hero-content .badge { margin-bottom: 16px; background: rgba(255,255,255,0.15); color: var(--text-white); backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.2); }
        .hero-content h1 { color: var(--text-white); font-size: 3rem; margin-bottom: 16px; }
        .hero-content p { color: rgba(255,255,255,0.85); font-size: 1.2rem; margin-bottom: 28px; max-width: 520px; }
        .hero-content .btn-group { display: flex; gap: 16px; flex-wrap: wrap; }

        /* ===== Intro / Feature Cards ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .intro-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .intro-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .intro-card .icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            background: var(--primary-light);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .intro-card:hover .icon { background: var(--primary); color: white; }
        .intro-card h3 { margin-bottom: 10px; font-size: 1.2rem; }
        .intro-card p { font-size: 0.95rem; margin-bottom: 0; }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            height: 200px;
            background: var(--primary-light);
            overflow: hidden;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-body {
            padding: 24px 24px 28px;
        }
        .category-card .card-body .badge { margin-bottom: 10px; }
        .category-card .card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
        .category-card .card-body p { font-size: 0.95rem; margin-bottom: 16px; }
        .category-card .card-body .btn { margin-top: 4px; }

        /* ===== Data / Stats ===== */
        .stats-section {
            background: var(--primary-gradient);
            padding: 60px 0;
            margin: 0 20px;
            border-radius: var(--radius-lg);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item { padding: 20px; }
        .stat-item .number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            margin-top: 6px;
        }

        /* ===== Content List (CMS) ===== */
        .content-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .content-item {
            display: flex;
            gap: 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            align-items: flex-start;
        }
        .content-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .content-item .item-thumb {
            width: 180px;
            height: 120px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            flex-shrink: 0;
            overflow: hidden;
        }
        .content-item .item-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .content-item .item-body { flex: 1; }
        .content-item .item-body .meta {
            display: flex;
            gap: 12px;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .content-item .item-body .meta .badge { font-size: 0.7rem; padding: 2px 10px; }
        .content-item .item-body h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .content-item .item-body h4 a { color: var(--text); }
        .content-item .item-body h4 a:hover { color: var(--primary); }
        .content-item .item-body p { font-size: 0.9rem; margin-bottom: 0; color: var(--text-light); }
        .content-item .item-body .time { font-size: 0.8rem; color: var(--text-light); margin-top: 8px; display: block; }
        .content-empty {
            text-align: center;
            padding: 48px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-light);
            font-size: 1.05rem;
        }
        .content-empty i { font-size: 2rem; color: var(--border); margin-bottom: 12px; display: block; }

        /* ===== Flow / Steps ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .flow-step {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .flow-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .flow-step .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .flow-step h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .flow-step p { font-size: 0.88rem; margin-bottom: 0; }
        .flow-arrow {
            display: none;
            position: absolute;
            right: -14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 1.4rem;
            opacity: 0.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            cursor: pointer;
            font-size: 1rem;
            color: var(--text);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i { color: var(--primary); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(26,26,46,0.8) 0%, rgba(45,138,78,0.7) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 80px 40px;
            margin: 0 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            position: relative;
        }
        .cta-section h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }
        .cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 40px 28px;
            margin: 20px 20px 0;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .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 .brand-text { font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 8px; }
        .footer-brand .brand-text span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 300px; }
        .footer-col h4 { color: white; font-size: 0.95rem; margin-bottom: 14px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root { --nav-width: 220px; }
            .hero { padding: 80px 40px; min-height: 400px; }
            .hero-content h1 { font-size: 2.4rem; }
            .intro-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .flow-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .mobile-header { display: flex; }
            .main-content { margin-left: 0; padding-top: var(--header-height); }
            .hero { margin: 12px 12px 0; padding: 60px 24px; min-height: 360px; border-radius: 0 0 var(--radius) var(--radius); }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .section-title h2 { font-size: 1.8rem; }
            .intro-grid { grid-template-columns: 1fr; gap: 16px; }
            .category-grid { grid-template-columns: 1fr; gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stats-section { margin: 0 12px; padding: 36px 0; border-radius: var(--radius); }
            .stat-item .number { font-size: 2rem; }
            .flow-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .content-item { flex-direction: column; padding: 16px; }
            .content-item .item-thumb { width: 100%; height: 160px; }
            .cta-section { margin: 0 12px; padding: 48px 24px; border-radius: var(--radius); }
            .cta-section h2 { font-size: 1.7rem; }
            .site-footer { margin: 12px 12px 0; padding: 32px 20px 20px; border-radius: var(--radius) var(--radius) 0 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .sidebar-overlay { display: block; pointer-events: none; }
            .sidebar-overlay.show { pointer-events: auto; }
        }
        @media (max-width: 520px) {
            .hero { padding: 40px 20px; min-height: 300px; }
            .hero-content h1 { font-size: 1.6rem; }
            .hero-content .btn-group { flex-direction: column; }
            .hero-content .btn-group .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
            .stat-item .number { font-size: 1.6rem; }
            .flow-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .content-item .item-thumb { height: 120px; }
            .section-title h2 { font-size: 1.5rem; }
        }

        /* ===== Utility ===== */
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-2 { margin-bottom: 16px; }
        .gap-2 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3c34;
            --primary-light: #2d5a4e;
            --primary-dark: #0e2a24;
            --secondary: #e8b84b;
            --secondary-light: #f0d08a;
            --secondary-dark: #c99a2e;
            --accent: #d9784a;
            --bg: #f7f5f0;
            --bg-card: #ffffff;
            --bg-dark: #1a3c34;
            --text: #2c2c2c;
            --text-light: #6b6b6b;
            --text-white: #f5f0e8;
            --border: #e0dbd0;
            --shadow-sm: 0 2px 8px rgba(26, 60, 52, 0.08);
            --shadow-md: 0 6px 24px rgba(26, 60, 52, 0.12);
            --shadow-lg: 0 16px 48px rgba(26, 60, 52, 0.16);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --nav-width: 220px;
            --header-h: 64px;
            --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===== 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);
            display: flex;
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--primary-dark);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.2);
            overflow-y: auto;
        }

        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--secondary);
            line-height: 1.3;
        }
        .sidebar-brand .brand-text span {
            color: var(--text-white);
            font-weight: 400;
        }
        .sidebar-brand .brand-sub {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
            letter-spacing: 1px;
        }

        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: rgba(255, 255, 255, 0.3);
            padding: 12px 12px 8px;
            font-weight: 600;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.4);
            transition: color var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--secondary);
        }
        .sidebar-nav .nav-item.active {
            background: rgba(232, 184, 75, 0.15);
            color: var(--secondary);
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active i {
            color: var(--secondary);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            border-radius: 0 4px 4px 0;
            background: var(--secondary);
        }
        .sidebar-nav .nav-item:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }
        .sidebar-footer i {
            color: var(--secondary);
            margin: 0 4px;
        }

        /* ===== 移动端汉堡按钮 ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 12px;
            left: 16px;
            z-index: 1100;
            background: var(--primary-dark);
            color: var(--secondary);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 20px;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }
        .menu-toggle:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Banner（分类页顶部） ===== */
        .category-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary-dark);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.25;
            filter: brightness(0.6);
        }
        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 42, 36, 0.88) 0%, rgba(26, 60, 52, 0.72) 100%);
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: 1px;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .category-banner .breadcrumb {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .category-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .category-banner .breadcrumb a:hover {
            color: var(--secondary);
        }
        .category-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }
        .category-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.7;
        }
        .category-banner .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
        }
        .category-banner .banner-stats .stat-item {
            text-align: center;
        }
        .category-banner .banner-stats .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--secondary);
        }
        .category-banner .banner-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }

        /* ===== 分类导航标签 ===== */
        .category-tabs {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .category-tabs .container {
            display: flex;
            gap: 4px;
            overflow-x: auto;
            padding: 12px 24px;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }
        .category-tabs .container::-webkit-scrollbar {
            height: 4px;
        }
        .category-tabs .container::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        .category-tabs .tab-btn {
            padding: 8px 20px;
            border-radius: 30px;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-light);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .category-tabs .tab-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(26, 60, 52, 0.04);
        }
        .category-tabs .tab-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 60, 52, 0.25);
        }
        .category-tabs .tab-btn:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== 分类内容区 ===== */
        .category-section {
            padding: 48px 0;
        }
        .category-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }
        .category-section .section-desc {
            color: var(--text-light);
            font-size: 16px;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .activity-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .activity-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .activity-card .card-img {
            height: 200px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .activity-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .activity-card:hover .card-img img {
            transform: scale(1.05);
        }
        .activity-card .card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .activity-card .card-img .date-badge {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(14, 42, 36, 0.8);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        .activity-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .activity-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .activity-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .activity-card .card-body .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-light);
        }
        .activity-card .card-body .card-meta i {
            margin-right: 6px;
            color: var(--secondary-dark);
        }
        .activity-card .card-body .card-meta .btn-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            transition: color var(--transition);
        }
        .activity-card .card-body .card-meta .btn-link:hover {
            color: var(--secondary-dark);
        }

        /* ===== 图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 24px 0;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-block .feature-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            background: var(--primary-light);
        }
        .feature-block .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-block .feature-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .feature-block .feature-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .feature-block .feature-text .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .feature-block .feature-text .feature-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
        }
        .feature-block .feature-text .feature-list li i {
            color: var(--secondary-dark);
            font-size: 18px;
            width: 24px;
            text-align: center;
        }

        /* ===== FAQ 区块 ===== */
        .faq-section {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            margin-top: 24px;
        }
        .faq-section .faq-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 28px;
            text-align: center;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-dark);
            cursor: pointer;
            padding: 4px 0;
            transition: color var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .faq-question i {
            color: var(--secondary-dark);
            transition: transform var(--transition);
            font-size: 14px;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 16px 0 0;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 12px;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: var(--text-white);
            margin: 48px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            opacity: 0.1;
            filter: brightness(0.5);
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 24px;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(232, 184, 75, 0.35);
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 184, 75, 0.4);
            color: var(--primary-dark);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-white);
            padding: 48px 24px 24px;
            margin-top: auto;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .footer-brand .brand-text span {
            color: #fff;
            font-weight: 400;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 20px auto 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom i {
            color: var(--secondary);
        }

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

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 0;
            }

            .category-banner {
                padding: 60px 0 40px;
                min-height: 220px;
            }
            .category-banner h1 {
                font-size: 28px;
            }
            .category-banner p {
                font-size: 15px;
            }
            .category-banner .banner-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .category-banner .banner-stats .stat-num {
                font-size: 22px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .feature-block .feature-text h2 {
                font-size: 22px;
            }

            .faq-section {
                padding: 28px 20px;
            }
            .faq-section .faq-title {
                font-size: 20px;
            }

            .cta-block {
                padding: 36px 20px;
            }
            .cta-block h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .category-tabs .container {
                padding: 8px 16px;
            }
            .category-tabs .tab-btn {
                padding: 6px 16px;
                font-size: 13px;
            }

            .category-section {
                padding: 32px 0;
            }
            .category-section .section-title {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-banner h1 {
                font-size: 24px;
            }
            .category-banner .banner-stats .stat-item {
                flex: 1;
                min-width: 80px;
            }
            .activity-card .card-img {
                height: 160px;
            }
            .activity-card .card-body {
                padding: 16px 18px 18px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .cta-block .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 页面加载动画 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in:nth-child(2) {
            animation-delay: 0.1s;
        }
        .fade-in:nth-child(3) {
            animation-delay: 0.2s;
        }
        .fade-in:nth-child(4) {
            animation-delay: 0.3s;
        }
        .fade-in:nth-child(5) {
            animation-delay: 0.4s;
        }
        .fade-in:nth-child(6) {
            animation-delay: 0.5s;
        }

/* roulang page: article */
:root {
    --primary: #1a5c3a;
    --primary-light: #2d8a5a;
    --primary-dark: #0f3d26;
    --secondary: #e8b84b;
    --secondary-light: #f0d48a;
    --accent: #d4783a;
    --bg: #f6f5f0;
    --bg-card: #ffffff;
    --bg-dark: #1a2e24;
    --text: #1e2a24;
    --text-light: #5a6b60;
    --text-white: #f5f7f4;
    --border: #dce0d8;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
    --transition: 0.25s ease;
    --font: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --sidebar-width: 240px;
    --header-height: 64px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    display: flex;
    min-height: 100vh;
}
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); }
i { font-style: normal; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
input, textarea { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.6rem 1rem; transition: border var(--transition); }
input:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,92,58,0.12); }

/* ===== 侧边栏 ===== */
.sidebar {
    position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
    background: var(--bg-card); border-right: 1px solid var(--border);
    display: flex; flex-direction: column; z-index: 100;
    padding: 1.6rem 1.2rem; overflow-y: auto;
    transition: transform var(--transition);
}
.sidebar-brand {
    display: flex; align-items: center; gap: 0.6rem;
    padding-bottom: 1.6rem; border-bottom: 1px solid var(--border); margin-bottom: 1.2rem;
}
.brand-text {
    font-size: 1.2rem; font-weight: 700; color: var(--primary-dark);
    letter-spacing: 0.5px;
}
.brand-text span { color: var(--secondary); font-weight: 600; }
.sidebar-nav { display: flex; flex-direction: column; gap: 0.3rem; flex: 1; }
.nav-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-light); margin-bottom: 0.4rem; padding-left: 0.6rem; }
.nav-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.7rem 1rem; border-radius: var(--radius-sm);
    font-size: 0.95rem; font-weight: 500; color: var(--text);
    transition: background var(--transition), color var(--transition);
}
.nav-item i { width: 1.2rem; text-align: center; color: var(--text-light); font-size: 1rem; transition: color var(--transition); }
.nav-item:hover { background: rgba(26,92,58,0.07); color: var(--primary); }
.nav-item:hover i { color: var(--primary); }
.nav-item.active { background: rgba(26,92,58,0.12); color: var(--primary-dark); font-weight: 600; }
.nav-item.active i { color: var(--primary); }
.sidebar-footer {
    margin-top: auto; padding-top: 1.2rem; border-top: 1px solid var(--border);
    font-size: 0.75rem; color: var(--text-light); text-align: center;
}

/* ===== 主内容区 ===== */
.main-content {
    margin-left: var(--sidebar-width); flex: 1; min-height: 100vh;
    display: flex; flex-direction: column;
}
.container { max-width: 880px; margin: 0 auto; padding: 0 2rem; width: 100%; }

/* ===== 文章页 ===== */
.article-page { padding: 2.8rem 0 4rem; flex: 1; }
.breadcrumb {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.85rem; color: var(--text-light); margin-bottom: 1.6rem; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); font-size: 0.75rem; }
.breadcrumb .current { color: var(--text); font-weight: 500; }

.article-header { margin-bottom: 2.4rem; }
.article-category {
    display: inline-block; background: rgba(26,92,58,0.10);
    color: var(--primary); padding: 0.25rem 1rem; border-radius: 20px;
    font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px; margin-bottom: 1rem;
}
.article-title {
    font-size: 2rem; font-weight: 800; line-height: 1.3; color: var(--primary-dark);
    margin-bottom: 1rem; letter-spacing: -0.3px;
}
.article-meta {
    display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
    font-size: 0.85rem; color: var(--text-light);
}
.article-meta i { margin-right: 0.3rem; font-size: 0.8rem; }
.article-meta .meta-item { display: flex; align-items: center; }

.article-cover {
    margin: 1.6rem 0 2.4rem; border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow);
}
.article-cover img { width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover; }

.article-body {
    font-size: 1.05rem; line-height: 1.9; color: var(--text);
}
.article-body p { margin-bottom: 1.2rem; }
.article-body h2, .article-body h3 {
    margin-top: 2rem; margin-bottom: 0.8rem; font-weight: 700; color: var(--primary-dark);
}
.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.2rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.2rem; padding-left: 1.6rem; }
.article-body li { margin-bottom: 0.5rem; list-style: disc; }
.article-body ol li { list-style: decimal; }
.article-body blockquote {
    border-left: 4px solid var(--secondary); background: rgba(232,184,75,0.08);
    padding: 1rem 1.6rem; margin: 1.2rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-light); font-style: normal;
}
.article-body img { margin: 1.6rem 0; border-radius: var(--radius-sm); box-shadow: var(--shadow); }

.article-tags {
    display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 2.4rem 0 1.6rem; padding-top: 1.6rem;
    border-top: 1px solid var(--border);
}
.tag {
    display: inline-block; background: var(--bg); color: var(--text-light);
    padding: 0.3rem 0.9rem; border-radius: 20px; font-size: 0.8rem; font-weight: 500;
    border: 1px solid var(--border); transition: all var(--transition);
}
.tag:hover { background: var(--primary); color: white; border-color: var(--primary); }

.article-nav {
    display: flex; justify-content: space-between; gap: 1rem;
    margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.article-nav a {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.9rem; font-weight: 500; color: var(--text-light);
    padding: 0.5rem 1rem; border-radius: var(--radius-sm);
    background: var(--bg-card); border: 1px solid var(--border);
    transition: all var(--transition); max-width: 45%;
}
.article-nav a:hover { color: var(--primary); border-color: var(--primary); background: rgba(26,92,58,0.04); }
.article-nav .nav-next { text-align: right; }

/* ===== 相关推荐 ===== */
.related-section { margin-top: 3.2rem; padding-top: 2.4rem; border-top: 1px solid var(--border); }
.related-title {
    font-size: 1.4rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 1.6rem;
    display: flex; align-items: center; gap: 0.6rem;
}
.related-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem;
}
.related-card {
    background: var(--bg-card); border-radius: var(--radius-sm);
    overflow: hidden; border: 1px solid var(--border);
    transition: all var(--transition);
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.related-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.related-card-body { padding: 1rem 1.2rem 1.2rem; }
.related-card-body h4 { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 0.3rem; line-height: 1.4; }
.related-card-body .meta { font-size: 0.75rem; color: var(--text-light); }
.related-card-body .meta i { margin-right: 0.2rem; }

/* ===== CTA ===== */
.cta-section {
    margin-top: 3.2rem; background: var(--primary-dark);
    border-radius: var(--radius); padding: 2.4rem 3rem;
    display: flex; align-items: center; justify-content: space-between;
    gap: 2rem; flex-wrap: wrap; color: var(--text-white);
}
.cta-text h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.3rem; }
.cta-text p { font-size: 0.9rem; opacity: 0.85; }
.cta-btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: var(--secondary); color: var(--primary-dark); font-weight: 700;
    padding: 0.75rem 2rem; border-radius: 40px; font-size: 0.95rem;
    transition: all var(--transition); white-space: nowrap;
}
.cta-btn:hover { background: var(--secondary-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,184,75,0.35); }
.cta-btn i { font-size: 0.85rem; }

/* ===== 文章未找到 ===== */
.not-found-box {
    text-align: center; padding: 4rem 2rem;
    background: var(--bg-card); border-radius: var(--radius);
    border: 1px solid var(--border); max-width: 520px; margin: 3rem auto;
}
.not-found-box i { font-size: 3rem; color: var(--secondary); margin-bottom: 1rem; display: block; }
.not-found-box h2 { font-size: 1.3rem; color: var(--text); margin-bottom: 0.6rem; }
.not-found-box p { color: var(--text-light); margin-bottom: 1.6rem; font-size: 0.9rem; }
.not-found-box .back-home {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: var(--primary); color: white; padding: 0.6rem 1.6rem;
    border-radius: 40px; font-weight: 600; font-size: 0.9rem;
    transition: all var(--transition);
}
.not-found-box .back-home:hover { background: var(--primary-light); color: white; transform: translateY(-2px); }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-card); border-top: 1px solid var(--border);
    padding: 2.4rem 2rem 1.2rem; margin-top: auto;
}
.footer-grid {
    display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem;
    max-width: 1200px; margin: 0 auto;
}
.footer-brand .brand-text { font-size: 1.1rem; margin-bottom: 0.5rem; }
.footer-brand p { font-size: 0.85rem; color: var(--text-light); max-width: 260px; line-height: 1.6; }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; color: var(--text); margin-bottom: 0.8rem; }
.footer-col a {
    display: block; font-size: 0.8rem; color: var(--text-light);
    padding: 0.25rem 0; transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
    max-width: 1200px; margin: 1.6rem auto 0; padding-top: 1rem;
    border-top: 1px solid var(--border); display: flex;
    justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem;
    font-size: 0.75rem; color: var(--text-light);
}
.footer-bottom i { color: var(--secondary); margin-right: 0.3rem; }

/* ===== 移动端菜单切换 ===== */
.mobile-toggle { display: none; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%); width: 260px;
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .mobile-toggle {
        display: flex; align-items: center; justify-content: center;
        position: fixed; top: 0.8rem; left: 0.8rem; z-index: 200;
        background: var(--bg-card); border: 1px solid var(--border);
        width: 44px; height: 44px; border-radius: 12px;
        cursor: pointer; box-shadow: var(--shadow);
        color: var(--text); font-size: 1.2rem;
    }
    .mobile-toggle:hover { background: var(--bg); }
    .mobile-overlay {
        display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.35);
        z-index: 90;
    }
    .mobile-overlay.show { display: block; }
    .container { padding: 0 1.2rem; }
    .article-page { padding: 1.6rem 0 2.4rem; }
    .article-title { font-size: 1.5rem; }
    .article-body { font-size: 0.95rem; }
    .related-grid { grid-template-columns: 1fr; }
    .cta-section { padding: 1.6rem 1.6rem; flex-direction: column; text-align: center; }
    .cta-btn { width: 100%; justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 1.2rem; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .article-meta { gap: 0.8rem; }
    .article-nav { flex-direction: column; }
    .article-nav a { max-width: 100%; }
    .breadcrumb { font-size: 0.78rem; }
}
@media (max-width: 520px) {
    .article-title { font-size: 1.25rem; }
    .container { padding: 0 0.8rem; }
    .article-page { padding: 1rem 0 2rem; }
    .article-body { font-size: 0.9rem; }
    .cta-text h3 { font-size: 1.1rem; }
    .related-card-body h4 { font-size: 0.9rem; }
    .article-header { margin-bottom: 1.6rem; }
}