/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #B85C38;
            --primary-dark: #8B3A1A;
            --primary-light: #D97A52;
            --secondary: #2D5A5A;
            --secondary-light: #3E7A7A;
            --accent: #D4A050;
            --accent-light: #E8C07A;
            --bg: #F9F5EE;
            --bg-card: #FFFFFF;
            --bg-dark: #2C1810;
            --bg-sidebar: #2C1810;
            --bg-sidebar-hover: #3D2B20;
            --text: #2C1810;
            --text-light: #7A6A5A;
            --text-inverse: #F9F5EE;
            --border: #D4C9B8;
            --border-light: #E8E0D5;
            --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.06);
            --shadow-md: 0 4px 16px rgba(44, 24, 16, 0.10);
            --shadow-lg: 0 8px 32px rgba(44, 24, 16, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-serif: 'Noto Serif SC', 'Georgia', serif;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --sidebar-width: 240px;
            --header-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        button, input, textarea { font: inherit; color: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); font-weight: 700; line-height: 1.3; color: var(--text); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
        h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== App Shell ===== */
        .app-shell { display: flex; min-height: 100vh; }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            color: var(--text-inverse);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            border-right: 2px solid rgba(212, 201, 184, 0.15);
            transition: transform var(--transition);
        }
        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(212, 201, 184, 0.15);
            text-align: center;
        }
        .sidebar-brand .logo {
            font-family: var(--font-serif);
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--accent);
            letter-spacing: 2px;
            display: block;
            line-height: 1.3;
        }
        .sidebar-brand .logo-sub {
            font-size: 0.75rem;
            color: rgba(212, 201, 184, 0.6);
            letter-spacing: 3px;
            margin-top: 4px;
            text-transform: uppercase;
        }
        .sidebar-brand .logo-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 6px;
        }
        .sidebar-nav {
            flex: 1;
            padding: 20px 16px;
        }
        .sidebar-nav .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: rgba(212, 201, 184, 0.4);
            padding: 12px 12px 8px;
            font-weight: 600;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: rgba(249, 245, 238, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
        }
        .sidebar-nav .nav-item:hover {
            background: var(--bg-sidebar-hover);
            color: var(--accent-light);
        }
        .sidebar-nav .nav-item.active {
            background: rgba(212, 160, 80, 0.12);
            color: var(--accent);
            border-left: 3px solid var(--accent);
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(212, 201, 184, 0.12);
            font-size: 0.75rem;
            color: rgba(249, 245, 238, 0.4);
            text-align: center;
            line-height: 1.6;
        }

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

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 999;
            background: var(--bg-dark);
            padding: 0 20px;
            height: var(--header-height);
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(212, 201, 184, 0.12);
        }
        .mobile-header .logo {
            font-family: var(--font-serif);
            font-size: 1.15rem;
            font-weight: 900;
            color: var(--accent);
            letter-spacing: 1px;
        }
        .mobile-header .menu-toggle {
            color: var(--text-inverse);
            font-size: 1.4rem;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-header .menu-toggle:hover {
            background: rgba(255,255,255,0.05);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 24px 80px;
            background: var(--bg-dark);
            color: var(--text-inverse);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44,24,16,0.85) 0%, rgba(44,24,16,0.40) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 160, 80, 0.15);
            border: 1px solid rgba(212, 160, 80, 0.3);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 20px;
            font-weight: 500;
        }
        .hero h1 {
            color: var(--text-inverse);
            margin-bottom: 16px;
            font-weight: 900;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: rgba(249, 245, 238, 0.75);
            max-width: 640px;
            margin: 0 auto 32px;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            font-family: var(--font-sans);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-inverse);
            border-color: rgba(249, 245, 238, 0.3);
        }
        .btn-outline:hover {
            background: rgba(249, 245, 238, 0.08);
            border-color: rgba(249, 245, 238, 0.5);
            color: var(--text-inverse);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--bg-dark);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ===== Sections ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-dark h2,
        .section-dark h3 {
            color: var(--text-inverse);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(184, 92, 56, 0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            border: 1px solid rgba(184, 92, 56, 0.15);
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--border-light);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-body {
            padding: 20px 20px 24px;
        }
        .card-body .tag {
            display: inline-block;
            background: rgba(184, 92, 56, 0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 8px;
            border: 1px solid rgba(184, 92, 56, 0.12);
        }
        .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .card-body .meta i {
            margin-right: 4px;
        }

        /* ===== Grids ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        /* ===== Feature Cards (分类入口风格) ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }
        .feature-card .icon-wrap {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            background: rgba(184, 92, 56, 0.06);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: rgba(184, 92, 56, 0.12);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .feature-card .badge {
            display: inline-block;
            background: rgba(212, 160, 80, 0.1);
            color: var(--accent);
            font-size: 0.7rem;
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            border: 1px solid rgba(212, 160, 80, 0.2);
            margin-top: 8px;
        }

        /* ===== Stat Cards ===== */
        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(212, 201, 184, 0.1);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.07);
        }
        .stat-card .number {
            font-family: var(--font-serif);
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.9rem;
            color: rgba(249, 245, 238, 0.6);
            margin-top: 4px;
        }

        /* ===== Content List (CMS) ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            align-items: flex-start;
        }
        .content-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--border);
        }
        .content-item .item-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--border-light);
        }
        .content-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .content-item .item-info {
            flex: 1;
            min-width: 0;
        }
        .content-item .item-info h4 {
            font-family: var(--font-sans);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .content-item .item-info h4 a:hover {
            color: var(--primary);
        }
        .content-item .item-info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-item .item-meta {
            font-size: 0.78rem;
            color: var(--text-light);
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .content-item .item-meta .cat {
            color: var(--primary);
            font-weight: 600;
        }
        .empty-msg {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            font-size: 0.95rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-item .faq-q {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(184, 92, 56, 0.03);
        }
        .faq-item .faq-q i {
            color: var(--text-light);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--text-light);
            display: none;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #3D2B20 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            border: 1px solid rgba(212, 201, 184, 0.1);
        }
        .cta-box h2 {
            color: var(--text-inverse);
            margin-bottom: 12px;
        }
        .cta-box p {
            color: rgba(249, 245, 238, 0.65);
            max-width: 480px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-box .btn {
            margin: 0 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(249, 245, 238, 0.5);
            padding: 40px 24px 28px;
            border-top: 1px solid rgba(212, 201, 184, 0.08);
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .site-footer .footer-brand {
            font-family: var(--font-serif);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
        }
        .site-footer .footer-nav {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .site-footer .footer-nav a {
            font-size: 0.85rem;
            color: rgba(249, 245, 238, 0.5);
        }
        .site-footer .footer-nav a:hover {
            color: var(--accent-light);
        }
        .site-footer .footer-copy {
            font-size: 0.8rem;
            color: rgba(249, 245, 238, 0.35);
            text-align: center;
            width: 100%;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(212, 201, 184, 0.06);
        }

        /* ===== Section Divider ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 0 auto 16px;
            border-radius: 3px;
        }
        .divider.light {
            background: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .grid-2 { grid-template-columns: 1fr; gap: 20px; }
            .hero { padding: 72px 20px 56px; min-height: 400px; }
            .section { padding: 52px 0; }
            .cta-box { padding: 40px 24px; }
            .content-item { flex-direction: column; }
            .content-item .item-thumb { width: 100%; height: 160px; }
            .site-footer .footer-inner { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .section-header h2 { font-size: 1.5rem; }
            .stat-card .number { font-size: 2rem; }
            .cta-box { padding: 32px 16px; }
            .container { padding: 0 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar { width: 4px; }
        .sidebar::-webkit-scrollbar-track { background: transparent; }
        .sidebar::-webkit-scrollbar-thumb { background: rgba(212,201,184,0.2); border-radius: 4px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --clr-primary: #B88A5C;
        --clr-primary-dark: #9A6F45;
        --clr-primary-light: #D4B48C;
        --clr-accent: #C7503A;
        --clr-accent-dark: #A8402E;
        --clr-bg: #F7F3EE;
        --clr-bg-card: #FFFFFF;
        --clr-bg-sidebar: #2D231E;
        --clr-bg-sidebar-hover: #3D312A;
        --clr-text: #3D3029;
        --clr-text-light: #8A7A6F;
        --clr-text-sidebar: #E8DDD4;
        --clr-text-sidebar-muted: #A8988A;
        --clr-border: #E5DDD4;
        --clr-border-light: #F0EAE2;
        --clr-shadow: rgba(0, 0, 0, 0.06);
        --clr-shadow-hover: rgba(0, 0, 0, 0.12);
        --clr-tag-bg: #F0EAE2;
        --clr-tag-text: #6B5D53;
        --clr-separator: #E8E0D8;
        --radius-sm: 6px;
        --radius-md: 10px;
        --radius-lg: 16px;
        --radius-xl: 20px;
        --shadow-sm: 0 1px 3px var(--clr-shadow);
        --shadow-md: 0 4px 12px var(--clr-shadow);
        --shadow-lg: 0 8px 28px var(--clr-shadow-hover);
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --sidebar-width: 240px;
        --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        --font-serif: "Georgia", "Noto Serif SC", "Source Han Serif SC", serif;
        --max-width: 880px;
    }

    /* ===== 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-sans);
        background: var(--clr-bg);
        color: var(--clr-text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--clr-text); }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.2rem; }
    p { margin-bottom: 1em; }
    .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

    /* ===== App Shell ===== */
    .app-shell {
        display: flex;
        min-height: 100vh;
    }

    /* ===== 左侧导航 ===== */
    .sidebar {
        width: var(--sidebar-width);
        flex-shrink: 0;
        background: var(--clr-bg-sidebar);
        color: var(--clr-text-sidebar);
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: 100;
        overflow-y: auto;
        padding: 0;
        border-right: 1px solid rgba(255,255,255,0.04);
    }
    .sidebar-brand {
        padding: 32px 24px 20px;
        font-size: 1.3rem;
        font-weight: 800;
        letter-spacing: 0.5px;
        color: var(--clr-primary-light);
        display: flex;
        align-items: center;
        gap: 10px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .sidebar-brand i {
        font-size: 1.5rem;
        color: var(--clr-primary);
    }
    .sidebar-nav {
        padding: 20px 12px;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 4px;
    }
    .nav-label {
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--clr-text-sidebar-muted);
        padding: 8px 12px 12px;
        font-weight: 600;
        opacity: 0.6;
    }
    .nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        color: var(--clr-text-sidebar);
        font-size: 0.95rem;
        font-weight: 500;
        transition: var(--transition);
        position: relative;
    }
    .nav-item i {
        width: 20px;
        text-align: center;
        font-size: 1rem;
        color: var(--clr-text-sidebar-muted);
        transition: var(--transition);
    }
    .nav-item:hover {
        background: var(--clr-bg-sidebar-hover);
        color: #fff;
    }
    .nav-item:hover i {
        color: var(--clr-primary-light);
    }
    .nav-item.active {
        background: rgba(184, 138, 92, 0.15);
        color: var(--clr-primary-light);
    }
    .nav-item.active i {
        color: var(--clr-primary);
    }
    .nav-item.active::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 24px;
        background: var(--clr-primary);
        border-radius: 0 3px 3px 0;
    }

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

    /* ===== 移动端菜单按钮 ===== */
    .mobile-toggle {
        display: none;
        position: fixed;
        top: 16px;
        left: 16px;
        z-index: 200;
        width: 44px;
        height: 44px;
        background: var(--clr-bg-sidebar);
        color: var(--clr-text-sidebar);
        border-radius: var(--radius-sm);
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        cursor: pointer;
        box-shadow: var(--shadow-md);
        border: none;
        transition: var(--transition);
    }
    .mobile-toggle:hover {
        background: var(--clr-bg-sidebar-hover);
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 90;
        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);
    }

    /* ===== 文章头部 ===== */
    .article-header {
        padding: 48px 40px 32px;
        background: var(--clr-bg);
        border-bottom: 1px solid var(--clr-border);
    }
    .article-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--clr-text-light);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .article-breadcrumb a {
        color: var(--clr-text-light);
        transition: var(--transition);
    }
    .article-breadcrumb a:hover {
        color: var(--clr-primary);
    }
    .article-breadcrumb .sep {
        color: var(--clr-border);
        font-size: 0.75rem;
    }
    .article-breadcrumb .current {
        color: var(--clr-primary);
        font-weight: 500;
    }
    .article-category-badge {
        display: inline-block;
        background: var(--clr-primary);
        color: #fff;
        padding: 4px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 600;
        letter-spacing: 0.3px;
        margin-bottom: 16px;
    }
    .article-title {
        font-size: 2.2rem;
        font-weight: 800;
        line-height: 1.25;
        color: var(--clr-text);
        margin-bottom: 16px;
        letter-spacing: -0.3px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 24px;
        font-size: 0.9rem;
        color: var(--clr-text-light);
        align-items: center;
    }
    .article-meta span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta i {
        font-size: 0.85rem;
        color: var(--clr-primary);
        width: 16px;
        text-align: center;
    }
    .article-meta .dot {
        width: 4px;
        height: 4px;
        border-radius: 50%;
        background: var(--clr-border);
        display: inline-block;
    }

    /* ===== 文章封面 ===== */
    .article-cover {
        width: 100%;
        max-height: 480px;
        overflow: hidden;
        background: var(--clr-border-light);
        position: relative;
    }
    .article-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }
    .article-cover .cover-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60%;
        background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
        pointer-events: none;
    }

    /* ===== 文章正文 ===== */
    .article-body-wrap {
        padding: 40px 40px 32px;
        flex: 1;
    }
    .article-body {
        max-width: var(--max-width);
        margin: 0 auto;
        background: var(--clr-bg-card);
        border-radius: var(--radius-lg);
        padding: 48px 48px 40px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--clr-border-light);
    }
    .article-content {
        font-family: var(--font-serif);
        font-size: 1.1rem;
        line-height: 1.9;
        color: var(--clr-text);
    }
    .article-content p {
        margin-bottom: 1.5em;
    }
    .article-content h2, .article-content h3 {
        font-family: var(--font-sans);
        margin-top: 2em;
        margin-bottom: 0.8em;
    }
    .article-content h2 { font-size: 1.6rem; border-bottom: 2px solid var(--clr-border-light); padding-bottom: 0.4em; }
    .article-content h3 { font-size: 1.3rem; }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 2em auto;
        box-shadow: var(--shadow-md);
    }
    .article-content blockquote {
        border-left: 4px solid var(--clr-primary);
        background: var(--clr-tag-bg);
        padding: 16px 24px;
        margin: 1.5em 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--clr-text-light);
        font-style: italic;
    }
    .article-content ul, .article-content ol {
        margin: 1em 0 1.5em 1.5em;
    }
    .article-content ul li {
        list-style: disc;
        margin-bottom: 0.4em;
    }
    .article-content ol li {
        list-style: decimal;
        margin-bottom: 0.4em;
    }
    .article-content a {
        color: var(--clr-primary-dark);
        text-decoration: underline;
        text-underline-offset: 2px;
    }
    .article-content a:hover {
        color: var(--clr-accent);
    }
    .article-content code {
        background: var(--clr-tag-bg);
        padding: 2px 8px;
        border-radius: 4px;
        font-size: 0.9em;
        font-family: "SF Mono", "Fira Code", monospace;
    }

    /* ===== 文章底部信息 ===== */
    .article-footer-meta {
        margin-top: 40px;
        padding-top: 24px;
        border-top: 1px solid var(--clr-border-light);
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .article-tags .tag {
        background: var(--clr-tag-bg);
        color: var(--clr-tag-text);
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 500;
        transition: var(--transition);
    }
    .article-tags .tag:hover {
        background: var(--clr-primary);
        color: #fff;
    }
    .article-share {
        display: flex;
        gap: 10px;
        align-items: center;
    }
    .article-share .share-label {
        font-size: 0.85rem;
        color: var(--clr-text-light);
        font-weight: 500;
    }
    .article-share a {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: var(--clr-tag-bg);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--clr-text-light);
        font-size: 1rem;
        transition: var(--transition);
    }
    .article-share a:hover {
        background: var(--clr-primary);
        color: #fff;
        transform: translateY(-2px);
    }

    /* ===== 上下篇导航 ===== */
    .article-prev-next {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 24px 40px 0;
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: space-between;
    }
    .article-prev-next a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 14px 22px;
        background: var(--clr-bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--clr-border-light);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--clr-text);
        flex: 1;
        max-width: 48%;
    }
    .article-prev-next a:hover {
        box-shadow: var(--shadow-md);
        border-color: var(--clr-primary-light);
        transform: translateY(-1px);
    }
    .article-prev-next a i {
        color: var(--clr-primary);
        font-size: 0.9rem;
    }
    .article-prev-next a .dir {
        color: var(--clr-text-light);
        font-size: 0.75rem;
        font-weight: 400;
    }
    .article-prev-next a .title-trunc {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 200px;
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 40px 40px 32px;
        background: var(--clr-bg);
    }
    .related-section .container {
        max-width: var(--max-width);
    }
    .related-heading {
        font-size: 1.3rem;
        font-weight: 700;
        margin-bottom: 24px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .related-heading i {
        color: var(--clr-primary);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .related-card {
        background: var(--clr-bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--clr-border-light);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
    }
    .related-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
        border-color: var(--clr-primary-light);
    }
    .related-card .card-img {
        width: 100%;
        height: 160px;
        object-fit: cover;
        background: var(--clr-border-light);
    }
    .related-card .card-body {
        padding: 16px 18px 18px;
    }
    .related-card .card-cat {
        font-size: 0.7rem;
        color: var(--clr-primary);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 6px;
    }
    .related-card .card-title {
        font-size: 1rem;
        font-weight: 600;
        line-height: 1.4;
        color: var(--clr-text);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover .card-title {
        color: var(--clr-primary-dark);
    }
    .related-card .card-date {
        font-size: 0.8rem;
        color: var(--clr-text-light);
        margin-top: 8px;
    }

    /* ===== CTA ===== */
    .article-cta {
        padding: 48px 40px;
        background: var(--clr-bg-sidebar);
        color: var(--clr-text-sidebar);
        text-align: center;
    }
    .article-cta .cta-title {
        font-size: 1.6rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }
    .article-cta .cta-desc {
        font-size: 1rem;
        color: var(--clr-text-sidebar-muted);
        max-width: 560px;
        margin: 0 auto 24px;
    }
    .article-cta .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: var(--clr-primary);
        color: #fff;
        padding: 14px 36px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 1rem;
        transition: var(--transition);
        box-shadow: 0 4px 14px rgba(184, 138, 92, 0.35);
    }
    .article-cta .cta-btn:hover {
        background: var(--clr-primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(184, 138, 92, 0.45);
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--clr-bg-sidebar);
        border-top: 1px solid rgba(255,255,255,0.05);
        padding: 36px 40px 28px;
        margin-top: auto;
    }
    .site-footer .container {
        max-width: var(--max-width);
    }
    .footer-inner {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        text-align: center;
    }
    .footer-brand {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--clr-primary-light);
        letter-spacing: 0.3px;
    }
    .footer-nav {
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .footer-nav a {
        color: var(--clr-text-sidebar-muted);
        font-size: 0.9rem;
        font-weight: 500;
        transition: var(--transition);
    }
    .footer-nav a:hover {
        color: var(--clr-primary-light);
    }
    .footer-copy {
        width: 100%;
        font-size: 0.8rem;
        color: var(--clr-text-sidebar-muted);
        opacity: 0.7;
        margin-top: 8px;
        letter-spacing: 0.3px;
    }

    /* ===== 内容未找到 ===== */
    .not-found-wrap {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 60px 40px;
        text-align: center;
    }
    .not-found-inner {
        max-width: 480px;
    }
    .not-found-inner .nf-icon {
        font-size: 4rem;
        color: var(--clr-border);
        margin-bottom: 20px;
    }
    .not-found-inner h2 {
        font-size: 1.5rem;
        color: var(--clr-text);
        margin-bottom: 12px;
    }
    .not-found-inner p {
        color: var(--clr-text-light);
        margin-bottom: 24px;
    }
    .not-found-inner .back-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        background: var(--clr-primary);
        color: #fff;
        border-radius: 30px;
        font-weight: 600;
        transition: var(--transition);
    }
    .not-found-inner .back-home:hover {
        background: var(--clr-primary-dark);
        transform: translateY(-2px);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-title { font-size: 1.8rem; }
        .article-body { padding: 32px 28px; }
        .related-grid { grid-template-columns: repeat(2, 1fr); }
        .article-header { padding: 32px 24px 24px; }
        .article-body-wrap { padding: 24px 24px 20px; }
        .article-prev-next { padding: 16px 24px 0; }
        .related-section { padding: 24px 24px 20px; }
        .article-cta { padding: 36px 24px; }
        .site-footer { padding: 28px 24px 20px; }
    }

    @media (max-width: 768px) {
        .sidebar {
            transform: translateX(-100%);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .sidebar.open {
            transform: translateX(0);
        }
        .sidebar-overlay.open {
            display: block;
        }
        .mobile-toggle {
            display: flex;
        }
        .main-content {
            margin-left: 0;
        }
        .article-title { font-size: 1.5rem; }
        .article-body { padding: 24px 18px; border-radius: var(--radius-md); }
        .article-header { padding: 24px 16px 20px; }
        .article-body-wrap { padding: 16px 16px 12px; }
        .article-breadcrumb { font-size: 0.8rem; }
        .article-meta { gap: 10px 16px; font-size: 0.85rem; }
        .article-prev-next { flex-direction: column; padding: 12px 16px 0; }
        .article-prev-next a { max-width: 100%; }
        .related-grid { grid-template-columns: 1fr; }
        .related-section { padding: 16px 16px 12px; }
        .article-cta { padding: 32px 16px; }
        .article-cta .cta-title { font-size: 1.3rem; }
        .site-footer { padding: 24px 16px 16px; }
        .footer-inner { flex-direction: column; }
        .article-cover { max-height: 240px; }
        .article-content { font-size: 1rem; }
        .article-footer-meta { flex-direction: column; align-items: flex-start; }
        .sidebar-brand { padding: 24px 20px 16px; font-size: 1.1rem; }
        .nav-item { padding: 10px 14px; font-size: 0.9rem; }
    }

    @media (max-width: 520px) {
        .article-title { font-size: 1.3rem; }
        .article-body { padding: 18px 14px; }
        .article-header { padding: 18px 12px 16px; }
        .article-body-wrap { padding: 12px 12px 8px; }
        .article-meta { font-size: 0.8rem; gap: 6px 12px; }
        .article-cover { max-height: 180px; }
        .related-card .card-img { height: 130px; }
        .article-cta .cta-btn { padding: 12px 24px; font-size: 0.9rem; }
        .article-prev-next a { padding: 12px 16px; font-size: 0.85rem; }
        .not-found-wrap { padding: 40px 20px; }
        .not-found-inner .nf-icon { font-size: 3rem; }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #D4764A;
            --primary-dark: #B85E3A;
            --primary-light: #E8A87C;
            --secondary: #3D5A80;
            --secondary-dark: #2C4059;
            --accent: #E8A87C;
            --bg-cream: #F5F0EB;
            --bg-white: #FFFBF7;
            --bg-dark: #1A1A2E;
            --bg-card: #FFFFFF;
            --text-dark: #2C1810;
            --text-body: #4A3A32;
            --text-light: #8A7A72;
            --text-white: #F5F0EB;
            --border-light: #E0D5CC;
            --border-medium: #C8BDB5;
            --border-accent: #D4764A;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.06);
            --shadow-md: 0 6px 24px rgba(44, 24, 16, 0.08);
            --shadow-lg: 0 12px 40px rgba(44, 24, 16, 0.12);
            --shadow-btn: 0 3px 12px rgba(212, 118, 74, 0.25);
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --font-sans: -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 0px;
        }

        /* ===== 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-sans);
            background: var(--bg-cream);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== App Shell 布局 ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-white);
            border-right: 2px solid var(--border-light);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 32px 0 24px;
            transition: transform var(--transition);
            box-shadow: 2px 0 20px rgba(44, 24, 16, 0.04);
        }

        .sidebar-brand {
            padding: 0 24px 28px;
            border-bottom: 2px solid var(--border-light);
            margin-bottom: 24px;
        }

        .sidebar-brand a {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand a i {
            color: var(--primary);
            font-size: 26px;
        }
        .sidebar-brand a:hover {
            color: var(--primary);
        }

        .sidebar-brand .brand-sub {
            font-size: 12px;
            color: var(--text-light);
            font-family: var(--font-sans);
            font-weight: 400;
            letter-spacing: 0.04em;
            margin-top: 2px;
            padding-left: 36px;
        }

        .sidebar-nav {
            flex: 1;
            padding: 0 16px;
            overflow-y: auto;
        }

        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--text-light);
            padding: 0 8px 12px;
            font-weight: 600;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            margin-bottom: 4px;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-light);
            transition: color var(--transition);
        }
        .nav-item:hover {
            background: rgba(212, 118, 74, 0.08);
            color: var(--primary-dark);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: rgba(212, 118, 74, 0.12);
            color: var(--primary-dark);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .sidebar-footer {
            padding: 20px 24px 0;
            border-top: 2px solid var(--border-light);
            margin-top: 16px;
            font-size: 12px;
            color: var(--text-light);
            text-align: center;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
        }

        /* ===== 移动端菜单切换 ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-white);
            box-shadow: var(--shadow-md);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-dark);
            border: 2px solid var(--border-light);
            transition: background var(--transition), transform var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
        .menu-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 46, 0.4);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .sidebar-overlay.open {
            opacity: 1;
        }

        /* ===== Hero / 页面标题区 ===== */
        .page-hero {
            position: relative;
            padding: 80px 40px 72px;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            isolation: isolate;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.72) 0%, rgba(61, 90, 128, 0.48) 100%);
            z-index: 0;
        }
        .page-hero>* {
            position: relative;
            z-index: 1;
        }
        .page-hero .hero-content {
            max-width: 720px;
        }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: 42px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .page-hero .hero-sub {
            font-size: 17px;
            color: rgba(245, 240, 235, 0.85);
            line-height: 1.6;
            font-weight: 400;
            letter-spacing: 0.02em;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: var(--primary);
            color: white;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 64px 40px;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-soft {
            background: rgba(212, 118, 74, 0.04);
        }

        .section-title {
            font-family: var(--font-serif);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 36px;
            max-width: 600px;
        }
        .section-dark .section-sub {
            color: rgba(245, 240, 235, 0.7);
        }
        .section-title-center {
            text-align: center;
        }
        .section-sub-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* ===== 分类筛选标签 ===== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
            justify-content: center;
        }
        .filter-tab {
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 2px solid var(--border-light);
            transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
            cursor: pointer;
        }
        .filter-tab:hover {
            border-color: var(--primary-light);
            color: var(--primary-dark);
            background: rgba(212, 118, 74, 0.04);
        }
        .filter-tab.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            box-shadow: var(--shadow-btn);
        }
        .filter-tab:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--border-light);
        }
        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .card-img img {
            transform: scale(1.05);
        }
        .news-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: white;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .news-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card:hover .card-title {
            color: var(--primary-dark);
        }
        .news-card .card-excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            margin-top: auto;
        }
        .news-card .card-meta i {
            margin-right: 4px;
            font-size: 12px;
        }
        .news-card .card-meta .card-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .card-meta .card-read {
            color: var(--primary);
            font-weight: 500;
            transition: color var(--transition);
        }
        .news-card .card-meta .card-read:hover {
            color: var(--primary-dark);
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px 32px;
            max-width: 900px;
            margin: 0 auto;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .rank-item:hover {
            background: rgba(212, 118, 74, 0.04);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            flex-shrink: 0;
            font-family: var(--font-serif);
        }
        .rank-item:nth-child(1) .rank-num {
            background: var(--primary);
            color: white;
        }
        .rank-item:nth-child(2) .rank-num {
            background: var(--primary-light);
            color: white;
        }
        .rank-item:nth-child(3) .rank-num {
            background: var(--accent);
            color: white;
        }
        .rank-item .rank-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            line-height: 1.4;
            flex: 1;
        }
        .rank-item .rank-hot {
            font-size: 13px;
            color: var(--text-light);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .rank-item .rank-hot i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .tag-item {
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 2px solid var(--border-light);
            transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
        }
        .tag-item:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: scale(1.04);
        }
        .tag-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .tag-item.tag-lg {
            font-size: 16px;
            padding: 8px 24px;
        }
        .tag-item.tag-sm {
            font-size: 12px;
            padding: 4px 14px;
        }
        .tag-item.tag-md {
            font-size: 14px;
            padding: 6px 18px;
        }

        /* ===== CTA 订阅 ===== */
        .cta-box {
            background: var(--bg-dark) url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            background-blend-mode: overlay;
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.78) 0%, rgba(61, 90, 128, 0.55) 100%);
            border-radius: var(--radius-lg);
            z-index: 0;
        }
        .cta-box>* {
            position: relative;
            z-index: 1;
        }
        .cta-box h3 {
            font-family: var(--font-serif);
            font-size: 28px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        .cta-box p {
            color: rgba(245, 240, 235, 0.8);
            font-size: 16px;
            margin-bottom: 26px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            padding: 13px 20px;
            border-radius: 30px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            font-size: 15px;
            transition: background var(--transition), border-color var(--transition);
        }
        .cta-form input[type="email"]::placeholder {
            color: rgba(245, 240, 235, 0.5);
        }
        .cta-form input[type="email"]:focus {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--primary-light);
        }
        .cta-form button {
            padding: 13px 32px;
            border-radius: 30px;
            background: var(--primary);
            color: white;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid var(--primary);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-form button:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: scale(1.02);
            box-shadow: var(--shadow-btn);
        }
        .cta-form button:focus-visible {
            outline: 2px solid white;
            outline-offset: 2px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(212, 118, 74, 0.04);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 600;
            transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-btn);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin: 16px auto 24px;
        }
        .divider-left {
            margin: 16px 0 24px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 48px 40px 40px;
            border-top: 3px solid var(--primary);
        }
        .site-footer .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            text-align: center;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.02em;
        }
        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 24px;
            justify-content: center;
        }
        .footer-nav a {
            font-size: 14px;
            color: rgba(245, 240, 235, 0.65);
            transition: color var(--transition);
        }
        .footer-nav a:hover {
            color: var(--primary-light);
        }
        .footer-copy {
            font-size: 13px;
            color: rgba(245, 240, 235, 0.45);
            letter-spacing: 0.02em;
            max-width: 500px;
        }

        /* ===== 响应式 ===== */

        /* 平板 1024px 以下 */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rank-list {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 34px;
            }
        }

        /* 平板 768px 以下 */
        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .menu-toggle {
                display: flex;
            }
            .sidebar-overlay {
                display: block;
                pointer-events: none;
            }
            .sidebar-overlay.open {
                pointer-events: auto;
            }

            .main-content {
                margin-left: 0;
            }

            .page-hero {
                padding: 60px 24px 52px;
                min-height: 220px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }

            .section {
                padding: 44px 24px;
            }

            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .section-title {
                font-size: 26px;
            }

            .cta-box {
                padding: 40px 28px;
            }
            .cta-box h3 {
                font-size: 24px;
            }

            .filter-tabs {
                gap: 8px;
            }
            .filter-tab {
                padding: 6px 16px;
                font-size: 13px;
            }

            .site-footer {
                padding: 36px 24px 32px;
            }

            .rank-item {
                padding: 12px 16px;
            }
        }

        /* 手机 520px 以下 */
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .page-hero {
                padding: 48px 18px 40px;
                min-height: 180px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-sub {
                font-size: 14px;
            }

            .section {
                padding: 36px 18px;
            }

            .section-title {
                font-size: 22px;
            }

            .cta-box {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .cta-box h3 {
                font-size: 20px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input[type="email"] {
                min-width: unset;
                width: 100%;
            }
            .cta-form button {
                width: 100%;
            }

            .footer-nav {
                flex-direction: column;
                gap: 8px;
            }

            .filter-tabs {
                gap: 6px;
            }
            .filter-tab {
                padding: 5px 14px;
                font-size: 12px;
            }

            .rank-item .rank-text {
                font-size: 14px;
            }

            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-answer {
                font-size: 14px;
            }

            .menu-toggle {
                top: 12px;
                left: 12px;
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
        }

        /* ===== 可访问性 ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

        /* ===== 复古装饰细节 ===== */
        .border-deco {
            border: 2px solid var(--border-light);
            border-radius: var(--radius-sm);
            position: relative;
        }
        .border-deco::before {
            content: '◆';
            position: absolute;
            top: -12px;
            left: 24px;
            background: var(--bg-cream);
            padding: 0 8px;
            color: var(--primary);
            font-size: 12px;
        }

        .deco-line {
            display: flex;
            align-items: center;
            gap: 12px;
            justify-content: center;
            margin: 12px 0 20px;
        }
        .deco-line::before,
        .deco-line::after {
            content: '';
            flex: 1;
            max-width: 80px;
            height: 1px;
            background: var(--border-medium);
        }
        .deco-line i {
            color: var(--primary);
            font-size: 14px;
        }