/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #1a1a2e;
        --primary-light: #2d2d4a;
        --primary-dark: #0f0f1a;
        --secondary: #e8a838;
        --secondary-light: #f0c060;
        --secondary-dark: #c88a20;
        --accent: #ff6b35;
        --bg-body: #f8f6f3;
        --bg-white: #ffffff;
        --bg-light: #f0ede8;
        --bg-dark: #1a1a2e;
        --text-primary: #1a1a2e;
        --text-secondary: #4a4a5a;
        --text-light: #7a7a8a;
        --text-white: #ffffff;
        --text-muted: #9a9aaa;
        --border: #e0ddd8;
        --border-light: #f0ede8;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
        --shadow-glow: 0 0 40px rgba(232,168,56,0.25);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        --container: 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-primary);
        background: var(--bg-body);
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--secondary); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea, select { 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: 1.25; font-weight: 700; color: var(--text-primary); }
    h1 { font-size: 3.2rem; letter-spacing: -0.02em; }
    h2 { font-size: 2.4rem; letter-spacing: -0.01em; }
    h3 { font-size: 1.6rem; }
    h4 { font-size: 1.25rem; }
    p { margin-bottom: 1rem; color: var(--text-secondary); }
    .container {
        width: 100%;
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }
    .section { padding: 80px 0; }
    .section-header { text-align: center; margin-bottom: 56px; }
    .section-header h2 { margin-bottom: 16px; }
    .section-header p { max-width: 640px; margin: 0 auto; font-size: 1.1rem; color: var(--text-secondary); }
    .text-center { text-align: center; }
    .text-gold { color: var(--secondary); }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 32px;
        font-weight: 600;
        font-size: 1rem;
        border-radius: var(--radius-md);
        transition: var(--transition);
        border: 2px solid transparent;
        cursor: pointer;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--secondary);
        color: var(--primary-dark);
        border-color: var(--secondary);
        box-shadow: 0 4px 20px rgba(232,168,56,0.35);
    }
    .btn-primary:hover {
        background: var(--secondary-light);
        border-color: var(--secondary-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(232,168,56,0.45);
    }
    .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 10px rgba(232,168,56,0.3); }
    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border-color: rgba(255,255,255,0.4);
    }
    .btn-outline:hover {
        background: rgba(255,255,255,0.1);
        border-color: var(--text-white);
        transform: translateY(-2px);
    }
    .btn-outline:active { transform: translateY(0); }
    .btn-dark {
        background: var(--primary);
        color: var(--text-white);
        border-color: var(--primary);
    }
    .btn-dark:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
    .btn-lg { padding: 18px 40px; font-size: 1.1rem; border-radius: var(--radius-lg); }
    .btn-sm { padding: 10px 20px; font-size: 0.875rem; border-radius: var(--radius-sm); }

    /* ===== Badge / Tag ===== */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        font-size: 0.8rem;
        font-weight: 600;
        border-radius: 100px;
        background: rgba(232,168,56,0.15);
        color: var(--secondary-dark);
        letter-spacing: 0.02em;
    }
    .badge-white { background: rgba(255,255,255,0.15); color: var(--text-white); }
    .badge-dark { background: rgba(26,26,46,0.08); color: var(--primary); }
    .tag {
        display: inline-block;
        padding: 2px 12px;
        font-size: 0.75rem;
        font-weight: 500;
        border-radius: 100px;
        background: var(--bg-light);
        color: var(--text-light);
        transition: var(--transition);
    }
    .tag:hover { background: var(--secondary); color: var(--primary-dark); }

    /* ===== Card ===== */
    .card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: var(--transition);
        border: 1px solid var(--border-light);
    }
    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-4px);
    }
    .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
    .card-body { padding: 24px; }
    .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
    .card-text { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
    .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-light); margin-top: 16px; }

    /* ===== Grid ===== */
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

    /* ===== Header & Navigation ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(26, 26, 46, 0.92);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        transition: var(--transition);
    }
    .header.scrolled { background: rgba(26, 26, 46, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }
    .logo {
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--text-white);
        letter-spacing: -0.02em;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .logo i { color: var(--secondary); font-size: 1.6rem; }
    .logo span { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .nav { display: flex; align-items: center; gap: 8px; }
    .nav a {
        padding: 8px 18px;
        font-size: 0.95rem;
        font-weight: 500;
        color: rgba(255,255,255,0.75);
        border-radius: var(--radius-sm);
        transition: var(--transition);
        position: relative;
    }
    .nav a:hover { color: var(--text-white); background: rgba(255,255,255,0.06); }
    .nav a.active { color: var(--secondary); background: rgba(232,168,56,0.1); }
    .nav a.active::after { display: none; }
    .header-actions { display: flex; align-items: center; gap: 12px; }
    .search-box {
        display: flex;
        align-items: center;
        background: rgba(255,255,255,0.08);
        border-radius: 100px;
        padding: 6px 6px 6px 18px;
        border: 1px solid rgba(255,255,255,0.1);
        transition: var(--transition);
        min-width: 200px;
    }
    .search-box:focus-within { background: rgba(255,255,255,0.12); border-color: rgba(232,168,56,0.4); }
    .search-box input {
        background: transparent;
        border: none;
        color: var(--text-white);
        font-size: 0.9rem;
        width: 100%;
        padding: 6px 0;
    }
    .search-box input::placeholder { color: rgba(255,255,255,0.35); }
    .search-box button {
        background: var(--secondary);
        color: var(--primary-dark);
        width: 34px;
        height: 34px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        flex-shrink: 0;
    }
    .search-box button:hover { background: var(--secondary-light); transform: scale(1.05); }
    .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-white); background: none; border: none; cursor: pointer; padding: 8px; }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 100vh;
        display: flex;
        align-items: center;
        padding: 120px 0 80px;
        background: var(--primary-dark);
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.35;
        z-index: 0;
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 30% 50%, rgba(232,168,56,0.08) 0%, transparent 70%),
                    linear-gradient(180deg, rgba(26,26,46,0.7) 0%, rgba(26,26,46,0.95) 100%);
        z-index: 1;
    }
    .hero-content { position: relative; z-index: 2; max-width: 800px; }
    .hero-badge { margin-bottom: 24px; }
    .hero h1 { color: var(--text-white); font-size: 3.6rem; font-weight: 800; line-height: 1.15; margin-bottom: 24px; }
    .hero h1 .highlight { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.7); max-width: 600px; margin-bottom: 36px; line-height: 1.7; }
    .hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
    .hero-stats {
        display: flex;
        gap: 48px;
        margin-top: 56px;
        padding-top: 40px;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .hero-stat h3 { font-size: 2.2rem; font-weight: 800; color: var(--text-white); }
    .hero-stat h3 span { color: var(--secondary); }
    .hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin-bottom: 0; }

    /* ===== Features / 核心优势 ===== */
    .features { background: var(--bg-white); }
    .feature-card {
        text-align: center;
        padding: 40px 28px;
        border-radius: var(--radius-md);
        transition: var(--transition);
        border: 1px solid var(--border-light);
        background: var(--bg-white);
    }
    .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: var(--secondary); }
    .feature-icon {
        width: 64px;
        height: 64px;
        margin: 0 auto 20px;
        background: linear-gradient(135deg, rgba(232,168,56,0.12), rgba(232,168,56,0.05));
        border-radius: var(--radius-md);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.8rem;
        color: var(--secondary);
    }
    .feature-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
    .feature-card p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 0; }

    /* ===== Categories / 分类入口 ===== */
    .categories { background: var(--bg-light); }
    .cat-card {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        background: var(--bg-white);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border: 1px solid var(--border-light);
        display: block;
    }
    .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .cat-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
    .cat-card-body { padding: 20px 24px 24px; }
    .cat-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; }
    .cat-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0; }
    .cat-card .arrow {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--secondary);
        margin-top: 12px;
        transition: var(--transition);
    }
    .cat-card:hover .arrow { gap: 12px; }

    /* ===== Latest / CMS 列表 ===== */
    .latest { background: var(--bg-white); }
    .post-card { display: flex; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--border-light); }
    .post-card:last-child { border-bottom: none; }
    .post-thumb {
        flex-shrink: 0;
        width: 200px;
        height: 140px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        background: var(--bg-light);
    }
    .post-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
    .post-card:hover .post-thumb img { transform: scale(1.05); }
    .post-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
    .post-info .badge { align-self: flex-start; margin-bottom: 8px; }
    .post-info h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
    .post-info h3 a { color: var(--text-primary); }
    .post-info h3 a:hover { color: var(--secondary); }
    .post-info p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 12px; }
    .post-meta { display: flex; align-items: center; gap: 20px; font-size: 0.85rem; color: var(--text-light); }
    .post-meta i { margin-right: 4px; }
    .empty-msg { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 1.1rem; background: var(--bg-light); border-radius: var(--radius-md); }

    /* ===== Process / 流程 ===== */
    .process { background: var(--bg-dark); color: var(--text-white); }
    .process .section-header h2 { color: var(--text-white); }
    .process .section-header p { color: rgba(255,255,255,0.6); }
    .process-step {
        text-align: center;
        padding: 32px 20px;
        position: relative;
    }
    .process-step::after {
        content: '→';
        position: absolute;
        right: -20px;
        top: 50%;
        transform: translateY(-50%);
        font-size: 2rem;
        color: var(--secondary);
        opacity: 0.5;
    }
    .process-step:last-child::after { display: none; }
    .step-num {
        width: 56px;
        height: 56px;
        margin: 0 auto 20px;
        background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--primary-dark);
    }
    .process-step h3 { color: var(--text-white); font-size: 1.15rem; margin-bottom: 10px; }
    .process-step p { color: rgba(255,255,255,0.6); font-size: 0.95rem; margin-bottom: 0; }

    /* ===== FAQ ===== */
    .faq { background: var(--bg-white); }
    .faq-item {
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(232,168,56,0.3); }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        font-weight: 600;
        font-size: 1.05rem;
        cursor: pointer;
        background: var(--bg-white);
        transition: var(--transition);
        user-select: none;
    }
    .faq-question:hover { background: var(--bg-light); }
    .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.1rem; }
    .faq-item.open .faq-question i { transform: rotate(180deg); }
    .faq-answer {
        padding: 0 24px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        padding: 0 24px 20px;
        max-height: 400px;
    }

    /* ===== CTA ===== */
    .cta {
        position: relative;
        background: var(--primary-dark);
        overflow: hidden;
        padding: 100px 0;
    }
    .cta-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.15;
        z-index: 0;
    }
    .cta .container { position: relative; z-index: 1; text-align: center; }
    .cta h2 { color: var(--text-white); font-size: 2.6rem; margin-bottom: 16px; }
    .cta p { color: rgba(255,255,255,0.7); font-size: 1.15rem; max-width: 560px; margin: 0 auto 32px; }
    .cta .btn { margin: 0 8px; }

    /* ===== Footer ===== */
    .footer {
        background: var(--primary);
        color: rgba(255,255,255,0.7);
        padding: 60px 0 32px;
    }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 300px; }
    .footer h4 { color: var(--text-white); font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
    .footer ul li { margin-bottom: 10px; }
    .footer ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
    .footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
    .footer-bottom {
        padding-top: 24px;
        border-top: 1px solid rgba(255,255,255,0.06);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.4);
    }
    .footer-socials { display: flex; gap: 16px; }
    .footer-socials a {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255,255,255,0.5);
        transition: var(--transition);
    }
    .footer-socials a:hover { background: var(--secondary); color: var(--primary-dark); transform: translateY(-2px); }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .grid-4 { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .hero h1 { font-size: 2.8rem; }
        .process-step::after { display: none; }
    }

    @media (max-width: 768px) {
        .nav { display: none; }
        .nav.mobile-open {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(26,26,46,0.98);
            backdrop-filter: blur(20px);
            padding: 20px 24px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            gap: 4px;
        }
        .nav.mobile-open a { padding: 14px 18px; font-size: 1.05rem; }
        .mobile-toggle { display: block; }
        .search-box { min-width: 140px; }
        .search-box input { width: 80px; }
        .hero h1 { font-size: 2.2rem; }
        .hero p { font-size: 1rem; }
        .hero-stats { flex-wrap: wrap; gap: 24px; }
        .grid-2, .grid-3 { grid-template-columns: 1fr; }
        .grid-4 { grid-template-columns: 1fr; }
        .post-card { flex-direction: column; }
        .post-thumb { width: 100%; height: 200px; }
        .section { padding: 56px 0; }
        .cta h2 { font-size: 1.8rem; }
        .footer-grid { grid-template-columns: 1fr; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .hero-stat h3 { font-size: 1.6rem; }
    }

    @media (max-width: 520px) {
        .header-inner { padding: 0 16px; }
        .container { padding: 0 16px; }
        .hero h1 { font-size: 1.8rem; }
        .hero-actions { flex-direction: column; width: 100%; }
        .hero-actions .btn { width: 100%; justify-content: center; }
        .search-box { min-width: 100px; }
        .search-box input { width: 60px; }
        .btn-lg { padding: 14px 28px; font-size: 1rem; }
        .section-header h2 { font-size: 1.6rem; }
        .feature-card { padding: 28px 20px; }
        .cat-card-body { padding: 16px 18px 20px; }
        .post-thumb { height: 160px; }
        .faq-question { padding: 16px 18px; font-size: 0.95rem; }
        .cta { padding: 60px 0; }
        .cta h2 { font-size: 1.5rem; }
    }

    /* ===== Animations ===== */
    @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
    .fade-up { animation: fadeUp 0.7s ease forwards; }
    .delay-1 { animation-delay: 0.1s; }
    .delay-2 { animation-delay: 0.2s; }
    .delay-3 { animation-delay: 0.3s; }
    .delay-4 { animation-delay: 0.4s; }

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

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #fae0e4;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1d3557;
            --bg-soft: #f1f3f5;
            --text: #212529;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 32px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }
        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 {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .header.scrolled {
            box-shadow: var(--shadow);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: var(--secondary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        .nav a.active:hover {
            background: var(--primary-dark);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.1);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 12px;
            font-size: 14px;
            width: 160px;
            outline: none;
        }
        .search-box i {
            color: var(--text-light);
            font-size: 14px;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
        }
        .btn-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.35);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .btn-cta i {
            font-size: 14px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }
        @media (max-width: 1024px) {
            .search-box input {
                width: 120px;
            }
        }
        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                gap: 4px;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav-right {
                gap: 10px;
            }
            .search-box input {
                width: 100px;
            }
            .hamburger {
                display: flex;
            }
            .btn-cta span {
                display: none;
            }
        }

        /* ===== Banner ===== */
        .banner {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .banner h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .banner h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .banner p {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .banner .breadcrumb span {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .banner {
                padding: 60px 0 40px;
                min-height: 240px;
            }
            .banner h1 {
                font-size: 32px;
            }
            .banner p {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .banner h1 {
                font-size: 26px;
            }
            .banner p {
                font-size: 14px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-title p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 28px;
            }
            .section-title p {
                font-size: 15px;
            }
        }

        /* ===== Guide Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .step-card:hover::before {
            opacity: 1;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
        }
        .step-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .card-img img {
            transform: scale(1.05);
        }
        .feature-card .card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: var(--text-white);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }
        .feature-card .card-body {
            padding: 24px;
        }
        .feature-card .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .feature-card .card-body p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .feature-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .feature-card .card-body .meta i {
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            padding: 20px 24px;
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 16px;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: var(--secondary);
            box-shadow: 0 4px 20px rgba(244, 162, 97, 0.35);
            font-size: 17px;
            padding: 14px 36px;
        }
        .cta-section .btn-cta:hover {
            background: #e08f4a;
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(244, 162, 97, 0.45);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .footer .logo {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer .logo span {
            color: var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer h4 {
            color: var(--text-white);
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive Extra ===== */
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-card {
                padding: 24px 20px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-soft);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--secondary);
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0b1a2e;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #f1f1f1;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.04);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --nav-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); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
        .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--secondary); font-weight: 700; }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; margin-bottom: 0.5rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text); }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--primary); border-radius: 4px; margin: 12px auto 0; }
        .section-title p { color: var(--text-light); font-size: 1.05rem; max-width: 600px; margin: 0.75rem auto 0; }

        /* ===== Buttons ===== */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: var(--transition); border: 2px solid transparent; }
        .btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35); }
        .btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230, 57, 70, 0.25); }
        .btn-white { background: #fff; color: var(--primary); border-color: #fff; }
        .btn-white:hover { background: var(--bg); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }
        .btn:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }

        /* ===== Badge / Tag ===== */
        .badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3px; }
        .badge-primary { background: rgba(230, 57, 70, 0.12); color: var(--primary); }
        .badge-secondary { background: rgba(29, 53, 87, 0.1); color: var(--secondary); }
        .badge-accent { background: rgba(244, 162, 97, 0.15); color: #b8661e; }
        .badge-hot { background: rgba(230, 57, 70, 0.18); color: var(--primary-dark); }
        .badge-hot::before { content: '🔥 '; }

        /* ===== Header & Nav ===== */
        .header { position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height); background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-light); z-index: 1000; box-shadow: var(--shadow-nav); }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--secondary); }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--secondary); }
        .nav { display: flex; align-items: center; gap: 6px; }
        .nav a { position: relative; padding: 8px 18px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: var(--text); transition: var(--transition); }
        .nav a:hover { background: rgba(230, 57, 70, 0.08); color: var(--primary); }
        .nav a.active { background: var(--primary); color: #fff; }
        .nav a.active:hover { background: var(--primary-dark); }
        .nav-right { display: flex; align-items: center; gap: 12px; }
        .nav-search { display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 50px; padding: 0 16px; transition: var(--transition); }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.12); }
        .nav-search input { background: transparent; border: none; padding: 8px 10px; font-size: 0.85rem; width: 140px; color: var(--text); }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-search button { background: transparent; color: var(--text-light); cursor: pointer; padding: 4px; font-size: 0.9rem; }
        .nav-search button:hover { color: var(--primary); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: transparent; border: none; }
        .nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--secondary); border-radius: 4px; transition: var(--transition); }
        @media (max-width: 900px) {
            .nav { position: fixed; top: var(--nav-height); left: 0; width: 100%; flex-direction: column; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 20px 24px; gap: 10px; transform: translateY(-120%); opacity: 0; pointer-events: none; transition: var(--transition); box-shadow: var(--shadow); }
            .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav a { width: 100%; text-align: center; padding: 12px; }
            .nav-right { gap: 8px; }
            .nav-search input { width: 100px; }
            .nav-toggle { display: flex; }
        }
        @media (max-width: 520px) {
            .nav-search { display: none; }
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.2rem; }
        }

        /* ===== Article Banner ===== */
        .article-banner { position: relative; margin-top: var(--nav-height); padding: 100px 0 60px; background: linear-gradient(135deg, var(--bg-dark) 0%, #162b45 100%); overflow: hidden; }
        .article-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.15; }
        .article-banner .container { position: relative; z-index: 1; }
        .article-banner .badge { margin-bottom: 16px; }
        .article-banner h1 { color: #fff; font-size: 2.4rem; max-width: 900px; line-height: 1.3; margin-bottom: 20px; }
        .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; color: rgba(255,255,255,0.7); font-size: 0.9rem; }
        .article-meta i { margin-right: 6px; color: var(--accent); }
        .article-meta span { display: flex; align-items: center; }
        @media (max-width: 768px) {
            .article-banner { padding: 80px 0 40px; }
            .article-banner h1 { font-size: 1.7rem; }
            .article-meta { gap: 12px; font-size: 0.82rem; flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.4rem; }
            .article-banner { padding: 70px 0 30px; }
        }

        /* ===== Article Main ===== */
        .article-main { padding: 60px 0; }
        .article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
        .article-body { background: var(--bg-alt); border-radius: var(--radius); padding: 48px; box-shadow: var(--shadow); }
        .article-body .content { font-size: 1.05rem; line-height: 1.9; color: var(--text); }
        .article-body .content h2 { font-size: 1.6rem; margin: 2rem 0 1rem; color: var(--secondary); }
        .article-body .content h3 { font-size: 1.25rem; margin: 1.8rem 0 0.8rem; color: var(--secondary); }
        .article-body .content p { margin-bottom: 1.2rem; }
        .article-body .content ul, .article-body .content ol { margin: 1rem 0 1rem 1.6rem; }
        .article-body .content li { margin-bottom: 0.5rem; list-style: disc; }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.5rem auto; box-shadow: var(--shadow); }
        .article-body .content blockquote { border-left: 4px solid var(--primary); background: rgba(230,57,70,0.04); padding: 16px 24px; margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content a:hover { color: var(--primary-dark); }
        .article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-light); }
        .article-tags .badge { cursor: default; }
        .article-share { display: flex; align-items: center; gap: 14px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border-light); }
        .article-share span { font-weight: 600; color: var(--secondary); font-size: 0.9rem; }
        .article-share a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--bg); color: var(--text-light); transition: var(--transition); font-size: 1.1rem; }
        .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card { background: var(--bg-alt); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
        .sidebar-card h4 { font-size: 1.1rem; margin-bottom: 18px; color: var(--secondary); position: relative; padding-bottom: 10px; }
        .sidebar-card h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 3px; background: var(--primary); border-radius: 4px; }
        .sidebar-list li { padding: 10px 0; border-bottom: 1px solid var(--border-light); }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a { color: var(--text); font-size: 0.92rem; display: block; transition: var(--transition); }
        .sidebar-list a:hover { color: var(--primary); padding-left: 6px; }
        .sidebar-cta { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; text-align: center; }
        .sidebar-cta h4 { color: #fff; }
        .sidebar-cta h4::after { background: #fff; }
        .sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin-bottom: 20px; }
        .sidebar-cta .btn { background: #fff; color: var(--primary); }
        .sidebar-cta .btn:hover { background: var(--bg); transform: translateY(-2px); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 32px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px; }
            .article-body .content { font-size: 1rem; }
            .article-body .content h2 { font-size: 1.3rem; }
        }

        /* ===== Error State ===== */
        .article-error { text-align: center; padding: 100px 24px; min-height: 50vh; display: flex; flex-direction: column; align-items: center; justify-content: center; }
        .article-error i { font-size: 4rem; color: var(--primary-light); margin-bottom: 24px; }
        .article-error h2 { font-size: 1.8rem; color: var(--secondary); margin-bottom: 12px; }
        .article-error p { color: var(--text-light); max-width: 480px; margin-bottom: 28px; }

        /* ===== Related Posts ===== */
        .related-posts { padding: 60px 0; background: var(--bg-alt); }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card .card-body { padding: 20px; }
        .related-card .badge { margin-bottom: 10px; }
        .related-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .related-card h4 a { color: var(--secondary); }
        .related-card h4 a:hover { color: var(--primary); }
        .related-card p { font-size: 0.88rem; color: var(--text-light); margin-bottom: 0; }
        .related-card .meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 0.8rem; color: var(--text-light); }
        @media (max-width: 900px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card img { height: 200px; }
        }

        /* ===== CTA ===== */
        .cta-section { padding: 80px 0; background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2f4a 100%); text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.08; }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
        .cta-section .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
        @media (max-width: 520px) {
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 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; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
        .footer h4 { color: #fff; font-size: 1rem; margin-bottom: 20px; font-weight: 600; }
        .footer ul li { margin-bottom: 12px; }
        .footer ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 6px; }
        .footer ul a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; flex-wrap: wrap; gap: 16px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.5); transition: var(--transition); font-size: 1rem; }
        .footer-socials a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        @media (max-width: 900px) {
            .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: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Back to Top ===== */
        .back-top { position: fixed; bottom: 32px; right: 32px; 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: 0 4px 20px rgba(230,57,70,0.3); cursor: pointer; transition: var(--transition); z-index: 999; border: none; opacity: 0; visibility: hidden; }
        .back-top.visible { opacity: 1; visibility: visible; }
        .back-top:hover { background: var(--primary-dark); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(230,57,70,0.4); }

        /* ===== Skeleton / Loading ===== */
        .skeleton { background: linear-gradient(90deg, var(--border-light) 25%, #f0f0f0 50%, var(--border-light) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
        @keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

        /* ===== Misc Utilities ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }