/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #6C3CF5;
        --primary-light: #8B6CF7;
        --primary-dark: #4A1FA8;
        --primary-bg: rgba(108, 60, 245, 0.08);
        --secondary: #F53C8C;
        --secondary-light: #F86BA8;
        --accent: #00C9A7;
        --bg-body: #F8F9FC;
        --bg-white: #FFFFFF;
        --bg-card: #FFFFFF;
        --bg-dark: #1A0A2E;
        --bg-dark-light: #2D1B4E;
        --text-primary: #1A0A2E;
        --text-body: #3D2E5A;
        --text-muted: #8A7AA8;
        --text-white: #FFFFFF;
        --border-color: #E8E2F2;
        --border-light: #F0ECF6;
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(26, 10, 46, 0.06);
        --shadow-md: 0 8px 24px rgba(26, 10, 46, 0.08);
        --shadow-lg: 0 16px 48px rgba(26, 10, 46, 0.12);
        --shadow-glow: 0 0 30px rgba(108, 60, 245, 0.20);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-body);
        background: var(--bg-body);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    button { cursor: pointer; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; }
    h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
    h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
    h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
    h4 { font-size: 1.1rem; }
    p { margin-bottom: 1rem; }
    .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
    .section { padding: 80px 0; }
    .section-title { text-align: center; margin-bottom: 48px; }
    .section-title h2 { margin-bottom: 12px; }
    .section-title p { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky; top: 0; z-index: 100;
        background: rgba(255,255,255,0.92); backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-light);
        height: var(--header-height);
        display: flex; align-items: center;
        transition: var(--transition);
    }
    .site-header.scrolled { box-shadow: var(--shadow-sm); }
    .header-inner {
        display: flex; align-items: center; justify-content: space-between;
        width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
        gap: 16px;
    }
    .logo { font-size: 1.4rem; font-weight: 800; color: var(--text-primary); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
    .logo i { color: var(--primary); font-size: 1.3rem; }
    .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .nav-main { display: flex; align-items: center; gap: 8px; }
    .nav-main a {
        padding: 8px 18px; border-radius: var(--radius-sm);
        font-size: 0.92rem; font-weight: 500; color: var(--text-body);
        transition: var(--transition); position: relative;
    }
    .nav-main a:hover { color: var(--primary); background: var(--primary-bg); }
    .nav-main a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
    .nav-main a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; border-radius: 4px; background: var(--primary); }
    .nav-actions { display: flex; align-items: center; gap: 12px; }
    .nav-search {
        display: flex; align-items: center;
        background: var(--bg-body); border: 1px solid var(--border-color);
        border-radius: 100px; padding: 6px 16px 6px 20px;
        transition: var(--transition); min-width: 180px;
    }
    .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }
    .nav-search input { background: none; border: none; padding: 6px 0; font-size: 0.88rem; color: var(--text-primary); width: 100%; }
    .nav-search input::placeholder { color: var(--text-muted); }
    .nav-search button { color: var(--text-muted); padding: 4px 8px; font-size: 0.9rem; }
    .nav-search button:hover { color: var(--primary); }
    .btn-cta {
        display: inline-flex; align-items: center; gap: 8px;
        padding: 10px 24px; border-radius: 100px;
        font-size: 0.92rem; font-weight: 600;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff !important; box-shadow: 0 4px 16px rgba(108,60,245,0.30);
        transition: var(--transition); white-space: nowrap;
    }
    .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(108,60,245,0.40); }
    .btn-cta-outline {
        background: transparent; color: var(--primary) !important;
        border: 2px solid var(--primary); box-shadow: none;
    }
    .btn-cta-outline:hover { background: var(--primary); color: #fff !important; }
    .mobile-toggle { display: none; font-size: 1.4rem; color: var(--text-primary); padding: 8px; }

    /* ===== Hero ===== */
    .hero {
        position: relative; overflow: hidden;
        padding: 120px 0 100px;
        background: linear-gradient(135deg, #1A0A2E 0%, #2D1B4E 50%, #1A0A2E 100%);
        color: var(--text-white);
    }
    .hero-bg {
        position: absolute; inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.18; mix-blend-mode: overlay;
    }
    .hero-overlay {
        position: absolute; inset: 0;
        background: radial-gradient(ellipse at 30% 50%, rgba(108,60,245,0.25) 0%, transparent 70%);
    }
    .hero .container { position: relative; z-index: 2; text-align: center; }
    .hero-badge {
        display: inline-flex; align-items: center; gap: 8px;
        background: rgba(255,255,255,0.10); backdrop-filter: blur(8px);
        border: 1px solid rgba(255,255,255,0.15);
        padding: 6px 20px 6px 12px; border-radius: 100px;
        font-size: 0.85rem; color: rgba(255,255,255,0.85); margin-bottom: 24px;
    }
    .hero-badge i { color: var(--accent); }
    .hero h1 { color: #fff; margin-bottom: 20px; font-weight: 800; letter-spacing: -0.02em; }
    .hero h1 span { background: linear-gradient(135deg, var(--primary-light), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
    .hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
    .hero-actions .btn-cta { font-size: 1.05rem; padding: 14px 36px; }
    .hero-actions .btn-ghost {
        color: rgba(255,255,255,0.8) !important; border: 1px solid rgba(255,255,255,0.25);
        padding: 14px 32px; border-radius: 100px; font-weight: 500;
        transition: var(--transition);
    }
    .hero-actions .btn-ghost:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.4); }
    .hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 56px; flex-wrap: wrap; }
    .hero-stat { text-align: center; }
    .hero-stat .num { font-size: 2rem; font-weight: 800; color: #fff; }
    .hero-stat .label { font-size: 0.88rem; color: rgba(255,255,255,0.55); margin-top: 4px; }

    /* ===== Cards ===== */
    .card {
        background: var(--bg-card); border: 1px solid var(--border-light);
        border-radius: var(--radius-md); padding: 28px;
        transition: var(--transition); box-shadow: var(--shadow-sm);
    }
    .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--border-color); }
    .card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 16px; background: var(--primary-bg); color: var(--primary); }
    .card h3 { margin-bottom: 8px; }
    .card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 0; }

    /* ===== Grid ===== */
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

    /* ===== Category Cards ===== */
    .cat-card {
        position: relative; border-radius: var(--radius-md); overflow: hidden;
        background: var(--bg-white); border: 1px solid var(--border-light);
        transition: var(--transition); box-shadow: var(--shadow-sm);
        display: flex; flex-direction: column;
    }
    .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .cat-card img { width: 100%; height: 180px; object-fit: cover; }
    .cat-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
    .cat-card-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
    .cat-card-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; flex: 1; }
    .cat-card-body .tag { align-self: flex-start; }

    /* ===== Tags / Badges ===== */
    .tag {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 4px 14px; border-radius: 100px;
        font-size: 0.78rem; font-weight: 500;
        background: var(--primary-bg); color: var(--primary);
    }
    .tag i { font-size: 0.7rem; }
    .badge {
        display: inline-flex; align-items: center; gap: 4px;
        padding: 2px 10px; border-radius: 100px;
        font-size: 0.72rem; font-weight: 600;
        background: rgba(0,201,167,0.12); color: #009B80;
    }
    .badge-hot { background: rgba(245,60,140,0.12); color: #D6206A; }

    /* ===== Content List (CMS) ===== */
    .content-list { display: flex; flex-direction: column; gap: 16px; }
    .content-item {
        display: flex; align-items: flex-start; gap: 18px;
        padding: 20px 24px; background: var(--bg-white);
        border: 1px solid var(--border-light); border-radius: var(--radius-md);
        transition: var(--transition);
    }
    .content-item:hover { box-shadow: var(--shadow-sm); border-color: var(--border-color); }
    .content-item .num { font-size: 1.2rem; font-weight: 800; color: var(--primary); min-width: 36px; opacity: 0.6; }
    .content-item .info { flex: 1; }
    .content-item .info h4 { font-size: 1rem; margin-bottom: 4px; }
    .content-item .info h4 a { color: var(--text-primary); }
    .content-item .info h4 a:hover { color: var(--primary); }
    .content-item .info p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0; }
    .content-item .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; }
    .content-item .meta i { font-size: 0.72rem; }

    /* ===== Stats / Data ===== */
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .stat-card {
        text-align: center; padding: 32px 20px;
        background: var(--bg-white); border-radius: var(--radius-md);
        border: 1px solid var(--border-light); box-shadow: var(--shadow-sm);
        transition: var(--transition);
    }
    .stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
    .stat-card .icon { font-size: 2rem; color: var(--primary); margin-bottom: 12px; }
    .stat-card .num { font-size: 2.2rem; font-weight: 800; color: var(--text-primary); line-height: 1.2; }
    .stat-card .label { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }

    /* ===== Steps / Timeline ===== */
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
    .step { text-align: center; position: relative; }
    .step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem; margin: 0 auto 16px; position: relative; z-index: 2; }
    .step h4 { margin-bottom: 6px; }
    .step p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }
    .steps::before { content: ''; position: absolute; top: 24px; left: 12.5%; right: 12.5%; height: 2px; background: var(--border-color); z-index: 0; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; 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-md); overflow: hidden; transition: var(--transition); }
    .faq-item:hover { border-color: var(--border-color); }
    .faq-q { padding: 18px 24px; font-weight: 600; color: var(--text-primary); display: flex; align-items: center; justify-content: space-between; cursor: pointer; transition: var(--transition); font-size: 0.98rem; }
    .faq-q i { color: var(--text-muted); transition: var(--transition); font-size: 0.85rem; }
    .faq-q.open i { transform: rotate(180deg); color: var(--primary); }
    .faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease; color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }
    .faq-a.open { max-height: 300px; padding: 0 24px 20px; }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary-dark), var(--bg-dark-light));
        padding: 80px 0; text-align: center; color: #fff;
        position: relative; overflow: hidden;
    }
    .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.10; mix-blend-mode: overlay; }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 { color: #fff; margin-bottom: 16px; }
    .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
    .cta-section .btn-cta { font-size: 1.05rem; padding: 14px 36px; background: #fff; color: var(--primary) !important; box-shadow: 0 8px 24px rgba(0,0,0,0.20); }
    .cta-section .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.30); }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-dark); color: rgba(255,255,255,0.6);
        padding: 48px 0 32px; margin-top: auto;
    }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
    .footer-brand .logo { color: #fff; margin-bottom: 12px; }
    .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
    .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
    .footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
    .footer-col a:hover { color: #fff; padding-left: 4px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; padding-top: 24px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: #fff; }

    /* ===== NotFound State ===== */
    .empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
    .empty-state i { font-size: 2.4rem; margin-bottom: 16px; display: block; color: var(--border-color); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .grid-4 { grid-template-columns: repeat(2, 1fr); }
        .steps { grid-template-columns: repeat(2, 1fr); }
        .steps::before { display: none; }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .nav-search { min-width: 120px; }
    }
    @media (max-width: 768px) {
        .section { padding: 56px 0; }
        .nav-main { display: none; }
        .nav-main.open { display: flex; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); gap: 4px; }
        .mobile-toggle { display: block; }
        .nav-search { min-width: 100px; }
        .grid-3 { grid-template-columns: 1fr; }
        .grid-2 { grid-template-columns: 1fr; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
        .hero { padding: 80px 0 60px; }
        .hero-stats { gap: 24px; }
        .hero-stat .num { font-size: 1.5rem; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .content-item { flex-direction: column; gap: 8px; }
        .content-item .num { display: none; }
        .btn-cta { padding: 8px 18px; font-size: 0.85rem; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .stat-card { padding: 20px 12px; }
        .stat-card .num { font-size: 1.6rem; }
        .hero-actions { flex-direction: column; width: 100%; }
        .hero-actions .btn-cta, .hero-actions .btn-ghost { width: 100%; justify-content: center; }
        .nav-actions .btn-cta { display: none; }
        .nav-search { min-width: 80px; }
    }

    /* ===== Utilities ===== */
    .text-center { text-align: center; }
    .mt-16 { margin-top: 16px; }
    .mt-24 { margin-top: 24px; }
    .mt-32 { margin-top: 32px; }
    .mb-16 { margin-bottom: 16px; }
    .mb-24 { margin-bottom: 24px; }
    .gap-8 { gap: 8px; }
    .gap-12 { gap: 12px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .flex-wrap { flex-wrap: wrap; }
    .w-full { width: 100%; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --primary-bg: #f8f7ff;
            --secondary: #fd79a8;
            --secondary-light: #ffb8c6;
            --accent: #00cec9;
            --accent-dark: #00b5b0;
            --bg-body: #ffffff;
            --bg-section: #f9fafc;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-dark-alt: #16213e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888aa;
            --text-light: #ffffff;
            --border-light: #e8e8f0;
            --border-mid: #d0d0e0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
            --shadow-md: 0 8px 30px rgba(108, 92, 231, 0.12);
            --shadow-lg: 0 20px 60px rgba(108, 92, 231, 0.15);
            --shadow-hover: 0 16px 48px rgba(108, 92, 231, 0.20);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 100px;
            --spacing-block: 60px;
        }

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

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

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

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        h1 {
            font-size: clamp(2.4rem, 6vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.15rem;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

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

        /* ===== Section ===== */
        section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-sub {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px auto;
            color: var(--text-secondary);
            font-size: 1.1rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
            transition: var(--transition);
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            opacity: 0.85;
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-main a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-section);
            border: 1px solid var(--border-light);
            border-radius: 100px;
            padding: 6px 16px 6px 18px;
            transition: var(--transition);
            width: 200px;
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.12);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 6px 0;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.40);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--primary);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 92, 231, 0.25) 0%, transparent 70%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: var(--text-light);
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .page-hero h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 32px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 8px 20px;
            border-radius: 100px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .hero-badge i {
            color: var(--secondary-light);
        }

        /* ===== Game Cards Grid ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .game-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-section);
        }
        .game-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .game-card:hover .game-card-image img {
            transform: scale(1.05);
        }
        .game-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 8px rgba(108, 92, 231, 0.35);
        }
        .game-card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .game-card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .game-card-body h3 a {
            color: var(--text-primary);
        }
        .game-card-body h3 a:hover {
            color: var(--primary);
        }
        .game-card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex: 1;
        }
        .game-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            margin-top: auto;
        }
        .game-card-meta .rating {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #f39c12;
            font-size: 0.85rem;
            font-weight: 600;
        }
        .game-card-meta .rating i {
            font-size: 0.8rem;
        }
        .game-card-meta .download-btn {
            background: var(--primary-bg);
            color: var(--primary);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.82rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .game-card-meta .download-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== Features / 分类特色 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            text-align: center;
            padding: 36px 20px 28px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-item i {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            background: var(--primary-bg);
            padding: 16px;
            border-radius: 50%;
            width: 72px;
            height: 72px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .feature-item:hover i {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .feature-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Stats / 数据 ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-3px);
        }
        .stat-item .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .number i {
            color: var(--secondary);
            font-size: 2rem;
            margin-right: 6px;
        }
        .stat-item .label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.95rem;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.20);
        }
        .cta-section .btn-primary:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.30);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: var(--text-light);
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--primary-light);
        }
        .footer-brand .logo span {
            color: var(--secondary-light);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 18px 0 6px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 48px;
            gap: 8px;
        }
        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--border-light);
            background: var(--bg-card);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .pagination-wrap a:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: var(--primary-bg);
        }
        .pagination-wrap .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            :root {
                --spacing-section: 70px;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.active {
                background: var(--primary-bg);
            }
            .nav-right .search-box {
                width: 140px;
            }
            .nav-right .btn-primary {
                padding: 8px 18px;
                font-size: 0.85rem;
            }

            .game-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .page-hero {
                padding: 70px 0 56px;
                min-height: 300px;
            }
            :root {
                --spacing-section: 50px;
            }
            .section-sub {
                margin-bottom: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb {
                font-size: 0.8rem;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .nav-right .search-box {
                width: 100px;
            }
            .nav-right .btn-primary {
                padding: 6px 14px;
                font-size: 0.78rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-badges {
                flex-direction: column;
                align-items: center;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
            .game-card-body {
                padding: 16px 18px 18px;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 14px 18px;
            }
            .faq-answer {
                font-size: 0.88rem;
            }
            .container {
                padding: 0 16px;
            }
            :root {
                --spacing-section: 40px;
                --spacing-block: 32px;
            }
        }

        /* ===== Extra Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 24px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 100px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            font-size: 0.88rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.30);
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --primary-bg: #EFF6FF;
            --accent: #F59E0B;
            --accent-light: #FEF3C7;
            --accent-dark: #D97706;
            --bg: #F8FAFC;
            --bg-white: #FFFFFF;
            --text: #0F172A;
            --text-light: #64748B;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-lg: 0 24px 64px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-height: 72px;
            --max-width: 1200px;
            --gap: 32px;
        }

        /* ===== 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);
            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: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text); }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .nav-main a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-main a.active {
            color: var(--primary);
            background: var(--primary-bg);
            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(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: none;
            background: var(--border-light);
            color: var(--text-light);
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            border: none;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37,99,235,0.35);
        }
        .btn-cta i { font-size: 0.85rem; }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-xs);
            border: none;
            background: transparent;
            color: var(--text);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .mobile-toggle:hover { background: var(--border-light); }

        @media (max-width: 768px) {
            .nav-main {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 40px rgba(0,0,0,0.08);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                align-items: stretch;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                padding: 12px 16px;
                font-size: 1rem;
                text-align: center;
            }
            .nav-main a.active::after { display: none; }
            .mobile-toggle { display: flex; }
            .header-actions .btn-cta span { display: none; }
            .header-actions .btn-cta { padding: 10px 16px; }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 120px 0 60px;
            margin-top: var(--nav-height);
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(30,41,59,0.70) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.7);
        }
        .article-breadcrumb a:hover { color: #fff; }
        .article-breadcrumb .sep { color: rgba(255,255,255,0.35); }
        .article-category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            max-width: 860px;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i { font-size: 0.8rem; }
        @media (max-width: 768px) {
            .article-hero { padding: 100px 0 40px; min-height: auto; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-meta { gap: 12px; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.35rem; }
        }

        /* ===== 文章正文 ===== */
        .article-body-section {
            padding: 48px 0 32px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            align-items: start;
        }
        .article-main { min-width: 0; }
        .article-content {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 40px 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-content p {
            margin-bottom: 1.5em;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 2em 0 0.8em;
            color: var(--text);
            line-height: 1.35;
        }
        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 1.6em 0 0.6em;
            color: var(--text);
        }
        .article-content ul, .article-content ol {
            margin: 1em 0 1.5em;
            padding-left: 1.6em;
        }
        .article-content li {
            margin-bottom: 0.5em;
            font-size: 1.05rem;
            line-height: 1.7;
        }
        .article-content ul li { list-style: disc; }
        .article-content ol li { list-style: decimal; }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.5em auto;
            box-shadow: var(--shadow);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content a { color: var(--primary); font-weight: 500; }
        .article-content a:hover { text-decoration: underline; }

        .article-sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            color: var(--text);
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            font-size: 0.92rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .sidebar-card ul li a i {
            width: 16px;
            color: var(--primary);
            font-size: 0.75rem;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border: none;
        }
        .sidebar-cta h4 { color: #fff; border-bottom-color: rgba(255,255,255,0.2); }
        .sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin-bottom: 16px; }
        .sidebar-cta .btn-cta {
            background: #fff;
            color: var(--primary);
            width: 100%;
            justify-content: center;
        }
        .sidebar-cta .btn-cta:hover { background: var(--accent-light); color: var(--primary-dark); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        }
        @media (max-width: 768px) {
            .article-content { padding: 24px 20px; }
            .article-content p { font-size: 0.98rem; }
            .article-sidebar { grid-template-columns: 1fr; }
        }

        /* ===== 标签与分享 ===== */
        .article-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-tags span {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .article-tags a {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--border-light);
            color: var(--text-light);
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-share a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 上下篇导航 ===== */
        .article-pagination {
            padding: 24px 0 16px;
        }
        .pagination-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .paginate-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .paginate-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .paginate-item .label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .paginate-item .title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }
        .paginate-item:hover .title { color: var(--primary); }
        .paginate-item.next { text-align: right; }
        .paginate-item.next .label { justify-content: flex-end; }
        @media (max-width: 640px) {
            .pagination-grid { grid-template-columns: 1fr; }
            .paginate-item.next { text-align: left; }
            .paginate-item.next .label { justify-content: flex-start; }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 48px 0 32px;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-header h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
        }
        .section-header a {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .section-header a:hover { gap: 10px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }
        .related-card .card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--border-light);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body {
            padding: 16px 18px 18px;
        }
        .related-card .card-body h3 {
            font-size: 0.98rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.82rem;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-content {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-content .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-content .btn-cta-primary {
            padding: 14px 36px;
            border-radius: 50px;
            border: none;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-content .btn-cta-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245,158,11,0.35);
        }
        .cta-content .btn-cta-secondary {
            padding: 14px 36px;
            border-radius: 50px;
            border: 2px solid rgba(255,255,255,0.3);
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-content .btn-cta-secondary:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
        }
        @media (max-width: 640px) {
            .cta-content h2 { font-size: 1.5rem; }
            .cta-content p { font-size: 0.95rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0B1120;
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1.3rem;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col a i { width: 20px; margin-right: 4px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 640px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 错误状态 ===== */
        .not-found-section {
            padding: 120px 0 80px;
            margin-top: var(--nav-height);
            text-align: center;
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .not-found-section .icon {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .not-found-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .not-found-section p {
            font-size: 1.05rem;
            color: var(--text-light);
            margin-bottom: 28px;
        }
        .not-found-section .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-section .btn-home:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37,99,235,0.3);
        }

        /* ===== 通用工具 ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .text-center { text-align: center; }

        /* ===== 骨架加载动画 ===== */
        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }
        .skeleton {
            background: linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: var(--radius-xs);
        }