/* roulang page: index */
:root {
        --primary: #1e293b;
        --primary-light: #334155;
        --accent: #f59e0b;
        --accent-hover: #d97706;
        --accent-light: #fef3c7;
        --bg: #ffffff;
        --bg-alt: #f8fafc;
        --bg-dark: #0f172a;
        --text: #0f172a;
        --text-light: #64748b;
        --text-white: #ffffff;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 20px;
        --shadow: 0 4px 24px rgba(0,0,0,0.06);
        --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
        --shadow-accent: 0 4px 20px rgba(245,158,11,0.30);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        --max-w: 1200px;
        --nav-h: 72px;
        --space-section: 100px;
        --space-section-mobile: 60px;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font: inherit; border: none; outline: none; }
    ul { list-style: none; }
    .container {
        width: 100%;
        max-width: var(--max-w);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 768px) {
        .container { padding: 0 16px; }
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--nav-h);
        background: rgba(255,255,255,0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .site-header.scrolled { box-shadow: var(--shadow); }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        font-size: 22px;
        font-weight: 700;
        letter-spacing: -0.5px;
        color: var(--primary);
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .logo i { color: var(--accent); font-size: 26px; }
    .nav-main { display: flex; align-items: center; gap: 32px; }
    .nav-main a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-light);
        position: relative;
        padding: 4px 0;
        transition: var(--transition);
    }
    .nav-main a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
        transition: var(--transition);
    }
    .nav-main a:hover { color: var(--primary); }
    .nav-main a:hover::after { width: 100%; }
    .nav-main a.active { color: var(--primary); }
    .nav-main a.active::after { width: 100%; }
    .nav-cta {
        background: var(--accent) !important;
        color: var(--text-white) !important;
        padding: 8px 20px !important;
        border-radius: 50px;
        font-weight: 600 !important;
        font-size: 14px !important;
    }
    .nav-cta::after { display: none !important; }
    .nav-cta:hover { background: var(--accent-hover) !important; transform: translateY(-1px); box-shadow: var(--shadow-accent); }
    .nav-toggle {
        display: none;
        background: none;
        font-size: 24px;
        color: var(--primary);
        cursor: pointer;
        padding: 4px;
    }
    @media (max-width: 768px) {
        .nav-main {
            position: fixed;
            top: var(--nav-h);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(16px);
            flex-direction: column;
            padding: 24px 20px 32px;
            gap: 16px;
            box-shadow: var(--shadow-lg);
            transform: translateY(-120%);
            opacity: 0;
            transition: var(--transition);
            border-bottom: 1px solid var(--border);
        }
        .nav-main.open { transform: translateY(0); opacity: 1; }
        .nav-toggle { display: block; }
        .nav-cta { text-align: center; }
    }

    /* ===== Hero ===== */
    .hero {
        margin-top: var(--nav-h);
        min-height: 620px;
        display: flex;
        align-items: center;
        position: relative;
        background: var(--bg-dark);
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-blend-mode: overlay;
        overflow: hidden;
    }
    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.40) 100%);
    }
    .hero-content { position: relative; z-index: 2; max-width: 700px; padding: 80px 0; }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(245,158,11,0.18);
        color: var(--accent);
        font-size: 13px;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 50px;
        margin-bottom: 20px;
        border: 1px solid rgba(245,158,11,0.25);
        letter-spacing: 0.3px;
    }
    .hero h1 {
        font-size: 52px;
        font-weight: 800;
        line-height: 1.15;
        color: var(--text-white);
        margin-bottom: 20px;
        letter-spacing: -1px;
    }
    .hero h1 span { color: var(--accent); }
    .hero p {
        font-size: 18px;
        color: rgba(255,255,255,0.8);
        max-width: 560px;
        margin-bottom: 32px;
        line-height: 1.7;
    }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: var(--transition);
        border: none;
    }
    .btn-primary { background: var(--accent); color: var(--text-white); }
    .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border: 1.5px solid rgba(255,255,255,0.35);
    }
    .btn-outline:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.6); transform: translateY(-2px); }
    @media (max-width: 768px) {
        .hero { min-height: 480px; }
        .hero h1 { font-size: 34px; }
        .hero p { font-size: 16px; }
        .hero-content { padding: 48px 0; }
        .btn { padding: 12px 24px; font-size: 14px; }
    }

    /* ===== Sections ===== */
    .section { padding: var(--space-section) 0; }
    .section-alt { background: var(--bg-alt); }
    .section-dark { background: var(--bg-dark); color: var(--text-white); }
    .section-title {
        font-size: 32px;
        font-weight: 700;
        margin-bottom: 12px;
        letter-spacing: -0.3px;
        line-height: 1.2;
    }
    .section-sub {
        font-size: 16px;
        color: var(--text-light);
        max-width: 600px;
        margin-bottom: 48px;
    }
    .section-dark .section-sub { color: rgba(255,255,255,0.6); }
    .section-head { text-align: center; margin-bottom: 48px; }
    .section-head .section-sub { margin-left: auto; margin-right: auto; }
    @media (max-width: 768px) {
        .section { padding: var(--space-section-mobile) 0; }
        .section-title { font-size: 26px; }
        .section-sub { font-size: 15px; margin-bottom: 32px; }
        .section-head { margin-bottom: 32px; }
    }

    /* ===== Features ===== */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .feature-card {
        background: var(--bg);
        border-radius: var(--radius);
        padding: 36px 28px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: var(--transition);
        text-align: center;
    }
    .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .feature-icon {
        width: 60px;
        height: 60px;
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
        font-size: 26px;
        color: var(--accent);
        background: var(--accent-light);
    }
    .feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
    .feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
    @media (max-width: 768px) {
        .features-grid { grid-template-columns: 1fr; gap: 20px; }
        .feature-card { padding: 28px 20px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .features-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== Category Cards ===== */
    .category-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .category-card {
        position: relative;
        border-radius: var(--radius);
        overflow: hidden;
        background: var(--primary);
        min-height: 240px;
        display: flex;
        align-items: flex-end;
        transition: var(--transition);
        cursor: pointer;
    }
    .category-card img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }
    .category-card:hover img { transform: scale(1.05); }
    .category-overlay {
        position: relative;
        z-index: 2;
        width: 100%;
        padding: 24px 20px;
        background: linear-gradient(transparent, rgba(0,0,0,0.75));
        color: var(--text-white);
    }
    .category-overlay h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
    .category-overlay p { font-size: 13px; opacity: 0.8; }
    .category-tag {
        position: absolute;
        top: 16px;
        right: 16px;
        z-index: 3;
        background: var(--accent);
        color: var(--text-white);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 50px;
    }
    @media (max-width: 768px) {
        .category-grid { grid-template-columns: 1fr; gap: 16px; }
        .category-card { min-height: 200px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .category-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== Product / Content Cards ===== */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .card {
        background: var(--bg);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .card-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        background: var(--bg-alt);
    }
    .card-body { padding: 20px; }
    .card-body .tag {
        display: inline-block;
        background: var(--accent-light);
        color: var(--accent-hover);
        font-size: 12px;
        font-weight: 600;
        padding: 2px 10px;
        border-radius: 50px;
        margin-bottom: 8px;
    }
    .card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
    .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
    .card-body .meta {
        font-size: 13px;
        color: var(--text-light);
        margin-top: 12px;
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .card-body .meta i { font-size: 12px; }
    @media (max-width: 768px) {
        .card-grid { grid-template-columns: 1fr; gap: 16px; }
    }
    @media (min-width: 769px) and (max-width: 1024px) {
        .card-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== News / CMS List ===== */
    .news-list { display: flex; flex-direction: column; gap: 16px; }
    .news-item {
        display: flex;
        align-items: center;
        gap: 20px;
        padding: 20px 24px;
        background: var(--bg);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .news-item:hover { background: var(--bg-alt); border-color: var(--border); }
    .news-item .num {
        font-size: 14px;
        font-weight: 700;
        color: var(--accent);
        min-width: 32px;
    }
    .news-item .info { flex: 1; }
    .news-item .info h4 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
    .news-item .info h4 a:hover { color: var(--accent-hover); }
    .news-item .info .meta { font-size: 13px; color: var(--text-light); }
    .news-item .badge {
        font-size: 12px;
        background: var(--accent-light);
        color: var(--accent-hover);
        padding: 2px 12px;
        border-radius: 50px;
        font-weight: 600;
        white-space: nowrap;
    }
    .news-empty {
        text-align: center;
        padding: 48px 20px;
        color: var(--text-light);
        font-size: 15px;
        background: var(--bg-alt);
        border-radius: var(--radius);
    }
    @media (max-width: 768px) {
        .news-item { flex-direction: column; align-items: flex-start; gap: 8px; padding: 16px; }
        .news-item .num { display: none; }
    }

    /* ===== Stats ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .stat-item { text-align: center; }
    .stat-item .number {
        font-size: 40px;
        font-weight: 800;
        color: var(--accent);
        line-height: 1.1;
        margin-bottom: 6px;
    }
    .stat-item .label { font-size: 14px; color: var(--text-light); }
    .section-dark .stat-item .label { color: rgba(255,255,255,0.6); }
    @media (max-width: 768px) {
        .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .stat-item .number { font-size: 32px; }
    }

    /* ===== FAQ ===== */
    .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        background: var(--bg);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-sm);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: var(--border); }
    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: var(--transition);
    }
    .faq-q i { font-size: 14px; color: var(--text-light); transition: var(--transition); }
    .faq-item.open .faq-q i { transform: rotate(180deg); color: var(--accent); }
    .faq-a {
        padding: 0 24px 18px;
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.8;
        display: none;
    }
    .faq-item.open .faq-a { display: block; }
    @media (max-width: 768px) {
        .faq-q { padding: 14px 16px; font-size: 14px; }
        .faq-a { padding: 0 16px 14px; font-size: 13px; }
    }

    /* ===== CTA ===== */
    .cta-box {
        background: linear-gradient(135deg, var(--primary) 0%, #0f172a 100%);
        border-radius: var(--radius-lg);
        padding: 64px 48px;
        text-align: center;
        color: var(--text-white);
        position: relative;
        overflow: hidden;
    }
    .cta-box::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        opacity: 0.10;
    }
    .cta-box h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 1; }
    .cta-box p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 520px; margin: 0 auto 28px; position: relative; z-index: 1; }
    .cta-box .btn { position: relative; z-index: 1; }
    @media (max-width: 768px) {
        .cta-box { padding: 40px 24px; }
        .cta-box h2 { font-size: 24px; }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255,255,255,0.7);
        padding: 56px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .logo { color: var(--text-white); margin-bottom: 12px; }
    .footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
    .footer-col h4 { color: var(--text-white); font-size: 15px; font-weight: 600; margin-bottom: 16px; }
    .footer-col a {
        display: block;
        font-size: 14px;
        color: rgba(255,255,255,0.6);
        padding: 4px 0;
        transition: var(--transition);
    }
    .footer-col a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 13px;
        color: rgba(255,255,255,0.4);
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }
    @media (max-width: 768px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        .footer-brand { grid-column: 1 / -1; }
        .footer-bottom { flex-direction: column; text-align: center; }
    }
    @media (max-width: 520px) {
        .footer-grid { grid-template-columns: 1fr; }
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .mt-12 { margin-top: 12px; }
    .mt-24 { margin-top: 24px; }
    .mt-32 { margin-top: 32px; }
    .gap-16 { gap: 16px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a2a3a;
            --color-primary-light: #2c4058;
            --color-accent: #e85d2c;
            --color-accent-hover: #d04e1f;
            --color-bg: #f8f6f3;
            --color-bg-alt: #f0ede8;
            --color-bg-card: #ffffff;
            --color-text: #1a1a1a;
            --color-text-weak: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e5e1db;
            --color-border-light: #f0ece6;
            --color-success: #10b981;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--color-primary);
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.8rem;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--color-accent);
            font-size: 1.4rem;
        }
        .logo:hover {
            color: var(--color-accent);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-main a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-weak);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-main a:hover {
            color: var(--color-primary);
        }
        .nav-main a:hover::after {
            width: 100%;
        }
        .nav-main a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-main a.active::after {
            width: 100%;
            background: var(--color-accent);
        }
        .nav-main a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 7px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .nav-main a.nav-cta::after {
            display: none;
        }
        .nav-main a.nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(232, 93, 44, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }

        @media (max-width: 820px) {
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px 28px;
                gap: 18px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.4s ease, opacity 0.3s ease;
                align-items: stretch;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                padding: 10px 0;
                font-size: 1.05rem;
                border-bottom: 1px solid var(--color-border-light);
            }
            .nav-main a:last-of-type {
                border-bottom: none;
            }
            .nav-main a.nav-cta {
                justify-content: center;
                margin-top: 6px;
                padding: 12px 22px;
            }
            .nav-toggle {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .nav-main {
                padding: 18px 20px;
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 42, 58, 0.88) 40%, rgba(26, 42, 58, 0.50) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px 24px;
            margin-bottom: 18px;
        }
        .article-hero .hero-category {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 50px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        .article-hero .hero-date {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .hero-date i {
            font-size: 0.8rem;
        }
        .article-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-hero .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 700px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 50px 0 40px;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .article-hero .hero-desc {
                font-size: 0.95rem;
            }
            .article-hero .hero-meta {
                gap: 10px 16px;
            }
        }
        @media (max-width: 480px) {
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero {
                padding: 36px 0 30px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-body-wrap {
            padding: 60px 0 50px;
            background: #fff;
        }
        .article-body {
            max-width: 800px;
            margin: 0 auto;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            color: var(--color-primary);
        }
        .article-body .content h2 {
            font-size: 1.6rem;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.5em;
            list-style: disc;
        }
        .article-body .content ol li {
            list-style: decimal;
        }
        .article-body .content a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body .content a:hover {
            color: var(--color-accent-hover);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-bg-alt);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-weak);
            font-style: italic;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 0.95rem;
        }
        .article-body .content th,
        .article-body .content td {
            border: 1px solid var(--color-border);
            padding: 10px 16px;
            text-align: left;
        }
        .article-body .content th {
            background: var(--color-bg-alt);
            font-weight: 600;
        }
        .article-body .content code {
            background: var(--color-bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'Fira Code', monospace;
        }
        .article-body .content pre {
            background: var(--color-primary);
            color: #e5e7eb;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.6em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body .content pre code {
            background: none;
            padding: 0;
            color: inherit;
        }

        /* 文章信息栏 */
        .article-info-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 16px;
            margin-top: 32px;
            border-top: 1px solid var(--color-border-light);
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--color-bg-alt);
            color: var(--color-text-weak);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 50px;
            transition: background var(--transition), color var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--color-accent);
            color: #fff;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--color-text-weak);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-text-weak);
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .article-share a:hover {
            background: var(--color-accent);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 600px) {
            .article-body-wrap {
                padding: 36px 0 30px;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-info-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 64px 0 56px;
            background: var(--color-bg);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 44px;
        }
        .related-section .section-title h2 {
            font-size: 1.9rem;
            font-weight: 700;
        }
        .related-section .section-title p {
            color: var(--color-text-weak);
            margin-top: 8px;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 28px;
        }
        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .related-card .card-meta .cat {
            background: var(--color-bg-alt);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 500;
        }
        .related-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        @media (max-width: 600px) {
            .related-section {
                padding: 40px 0 36px;
            }
            .related-section .section-title h2 {
                font-size: 1.5rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 42, 58, 0.88) 30%, rgba(26, 42, 58, 0.60) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 34px;
            border-radius: 50px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-section .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 93, 44, 0.40);
        }
        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 1rem;
            padding: 13px 32px;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }
        @media (max-width: 600px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-primary,
            .cta-section .btn-outline {
                width: 100%;
                justify-content: center;
                padding: 13px 24px;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-wrap {
            padding: 80px 0;
            text-align: center;
            background: #fff;
        }
        .not-found-wrap .nf-icon {
            font-size: 3.6rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
        }
        .not-found-wrap h2 {
            font-size: 1.6rem;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .not-found-wrap p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .not-found-wrap .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 50px;
            transition: background var(--transition), transform var(--transition);
        }
        .not-found-wrap .back-home:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo i {
            color: var(--color-accent);
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 22px 0 26px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 600px) {
            .site-footer {
                padding: 36px 0 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 18px 0 22px;
            }
        }

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

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            :root {
                --spacing-section: 40px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .related-section .section-title h2 {
                font-size: 1.35rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a3a;
            --primary-light: #2c4050;
            --accent: #d4a04a;
            --accent-hover: #c08e36;
            --accent-light: #f0e0c0;
            --bg: #f8f7f4;
            --bg-card: #ffffff;
            --bg-dark: #1a2a3a;
            --bg-warm: #f5f0e8;
            --text: #1e1e1e;
            --text-light: #5a5a5a;
            --text-muted: #8a8a8a;
            --text-on-dark: #f0ede8;
            --border: #e4ddd4;
            --border-light: #f0ebe4;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.08);
            --shadow-xl: 0 32px 64px rgba(0,0,0,0.10);
            --transition: 0.25s cubic-bezier(0.25,0.1,0.25,1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --spacing-section: 90px;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 600; color: var(--text); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1em; color: var(--text-light); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) { .container { padding-left: 32px; padding-right: 32px; } }
        @media (min-width: 1024px) { .container { padding-left: 40px; padding-right: 40px; } }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.05); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            padding-top: 0;
            padding-bottom: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo i { color: var(--accent); font-size: 1.3rem; }
        .logo:hover { color: var(--primary); }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a:hover { color: var(--primary); background: rgba(0,0,0,0.03); }
        .nav-main a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-main a.nav-cta {
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            padding: 8px 24px;
            font-weight: 600;
            margin-left: 6px;
            box-shadow: 0 4px 14px rgba(26,42,58,0.15);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .nav-main a.nav-cta i { margin-right: 6px; }
        .nav-main a.nav-cta:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(26,42,58,0.20);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(0,0,0,0.04); }

        @media (max-width: 820px) {
            .nav-toggle { display: block; }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.3s ease;
                box-shadow: 0 20px 40px rgba(0,0,0,0.06);
                align-items: stretch;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .nav-main a.active::after { display: none; }
            .nav-main a.active { background: var(--accent-light); color: var(--primary); font-weight: 600; }
            .nav-main a.nav-cta { margin-left: 0; margin-top: 6px; text-align: center; }
        }

        /* ===== Page Hero ===== */
        .page-hero {
            margin-top: var(--header-height);
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            padding: 80px 24px 70px;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,42,58,0.75) 0%, rgba(26,42,58,0.50) 100%);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .page-hero h1 {
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.15);
        }
        .page-hero p {
            color: rgba(255,255,255,0.85);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
            box-shadow: 0 4px 12px rgba(212,160,74,0.25);
        }
        @media (max-width: 640px) {
            .page-hero { min-height: 240px; padding: 60px 20px 50px; }
            .page-hero p { font-size: 1rem; }
        }

        /* ===== Section Common ===== */
        .section { padding: var(--spacing-section) 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 620px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; }
        .section-divider {
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin: 16px auto 24px;
        }

        /* ===== Category Tabs / Tags ===== */
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 48px;
        }
        .category-tag {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-light);
            transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
            cursor: default;
        }
        .category-tag:hover { border-color: var(--accent); color: var(--primary); box-shadow: var(--shadow-sm); }
        .category-tag.active {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(212,160,74,0.20);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 28px;
        }
        .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;
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: var(--bg-warm);
        }
        .card-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
        .card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 14px; flex: 1; }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .card-meta i { color: var(--accent); margin-right: 4px; }
        .card-badge {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 50px;
            letter-spacing: 0.02em;
        }

        /* ===== Guide / Feature Block ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 32px;
        }
        .guide-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .guide-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .guide-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .guide-item h4 { font-size: 1.08rem; margin-bottom: 8px; }
        .guide-item p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Hot Picks ===== */
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 24px;
        }
        .hot-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .hot-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .hot-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .hot-body { padding: 18px 20px 22px; }
        .hot-body h4 { font-size: 1.02rem; margin-bottom: 4px; }
        .hot-body .hot-desc { font-size: 0.84rem; color: var(--text-muted); margin-bottom: 10px; }
        .hot-price {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
        }
        .hot-price small { font-size: 0.78rem; font-weight: 400; color: var(--text-muted); text-decoration: line-through; margin-left: 8px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            color: var(--text);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover { background: rgba(0,0,0,0.01); }
        .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 24px;
            text-align: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,42,58,0.78) 0%, rgba(26,42,58,0.55) 100%);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 40px;
            border-radius: 50px;
            box-shadow: 0 6px 24px rgba(212,160,74,0.30);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-btn:hover { background: var(--accent-hover); color: var(--primary); transform: translateY(-2px); box-shadow: 0 10px 32px rgba(212,160,74,0.35); }
        .cta-btn i { margin-right: 8px; }

        /* ===== Stats / Data Row ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-item { padding: 20px 12px; }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-number small { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
        .stat-label { font-size: 0.88rem; color: var(--text-muted); margin-top: 4px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 64px 0 32px;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { color: #fff; font-size: 1.2rem; margin-bottom: 14px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 18px; letter-spacing: 0.02em; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col a i { margin-right: 8px; width: 18px; text-align: center; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        @media (max-width: 820px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Responsive Tweaks ===== */
        @media (max-width: 640px) {
            .section { padding: 56px 0; }
            .card-grid { grid-template-columns: 1fr; }
            .hot-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .guide-grid { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: 1fr 1fr; gap: 12px; }
        }
        @media (max-width: 420px) {
            .hot-grid { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: 1fr; }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== Focus ===== */
        a:focus-visible, button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }