/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #0b1a30;
        --primary-light: #162d50;
        --primary-dark: #060f1e;
        --secondary: #d4a845;
        --secondary-light: #e8c55a;
        --secondary-dark: #b89130;
        --accent: #2a6a9a;
        --accent-light: #3a8ac0;
        --bg: #f0f2f6;
        --bg-white: #ffffff;
        --bg-dark: #0b1a30;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-light: #6b7280;
        --text-white: #ffffff;
        --text-muted: #9ca3af;
        --border: #e5e7eb;
        --border-light: #f0f0f0;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow: 0 4px 20px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
        --shadow-gold: 0 4px 20px rgba(212,168,69,0.25);
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        --max-width: 1200px;
        --header-height: 76px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
        font-family: var(--font-sans);
        color: var(--text);
        background: var(--bg);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        padding-top: var(--header-height);
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
    button { cursor: pointer; background: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.35rem; }
    h4 { font-size: 1.1rem; }
    p { margin-bottom: 0.75rem; color: var(--text-light); }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        font-weight: 600;
        font-size: 0.95rem;
        border-radius: var(--radius-sm);
        transition: var(--transition);
        border: 2px solid transparent;
        letter-spacing: 0.3px;
    }
    .btn-primary {
        background: var(--secondary);
        color: var(--primary);
        border-color: var(--secondary);
    }
    .btn-primary:hover { background: var(--secondary-light); border-color: var(--secondary-light); transform: translateY(-2px); box-shadow: var(--shadow-gold); }
    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border-color: rgba(255,255,255,0.4);
    }
    .btn-outline:hover { border-color: var(--secondary); color: var(--secondary); transform: translateY(-2px); }
    .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); }
    .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: var(--header-height);
        background: rgba(11, 26, 48, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(212,168,69,0.15);
        z-index: 1000;
        display: flex;
        align-items: center;
    }
    .site-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(--text-white);
        letter-spacing: 0.5px;
    }
    .logo-icon {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        color: var(--primary);
        font-weight: 900;
    }
    .logo span { color: var(--secondary); }
    .main-nav { display: flex; align-items: center; gap: 8px; }
    .main-nav a {
        padding: 8px 20px;
        color: rgba(255,255,255,0.75);
        font-weight: 500;
        font-size: 0.92rem;
        border-radius: var(--radius-sm);
        transition: var(--transition);
        position: relative;
    }
    .main-nav a:hover { color: var(--text-white); background: rgba(212,168,69,0.1); }
    .main-nav a.active {
        color: var(--secondary);
        background: rgba(212,168,69,0.12);
    }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--secondary);
        border-radius: 4px;
    }
    .nav-cta {
        background: var(--secondary) !important;
        color: var(--primary) !important;
        font-weight: 700 !important;
        padding: 10px 24px !important;
        border-radius: var(--radius-sm) !important;
    }
    .nav-cta:hover { background: var(--secondary-light) !important; transform: translateY(-1px); box-shadow: var(--shadow-gold); }
    .nav-toggle { display: none; color: var(--text-white); font-size: 1.5rem; cursor: pointer; background: none; border: none; padding: 8px; }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 580px;
        display: flex;
        align-items: center;
        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;
        mix-blend-mode: overlay;
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11,26,48,0.92) 30%, rgba(11,26,48,0.6) 70%, rgba(212,168,69,0.08) 100%);
    }
    .hero .container { position: relative; z-index: 2; padding-top: 40px; padding-bottom: 40px; }
    .hero-content { max-width: 640px; }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 16px;
        background: rgba(212,168,69,0.15);
        border: 1px solid rgba(212,168,69,0.25);
        border-radius: 40px;
        color: var(--secondary);
        font-size: 0.82rem;
        font-weight: 600;
        margin-bottom: 20px;
    }
    .hero h1 { font-size: 3.2rem; font-weight: 800; color: var(--text-white); line-height: 1.15; margin-bottom: 16px; }
    .hero h1 span { color: var(--secondary); }
    .hero p { font-size: 1.1rem; color: rgba(255,255,255,0.7); max-width: 520px; margin-bottom: 32px; line-height: 1.7; }
    .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
    .hero-stats {
        display: flex;
        gap: 40px;
        margin-top: 50px;
        padding-top: 30px;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .hero-stat h3 { font-size: 1.8rem; color: var(--secondary); font-weight: 800; }
    .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin: 0; }

    /* ===== Section通用 ===== */
    .section { padding: 80px 0; }
    .section-alt { background: var(--bg-white); }
    .section-dark { background: var(--bg-dark); }
    .section-header { text-align: center; margin-bottom: 48px; }
    .section-header h2 { margin-bottom: 12px; }
    .section-header p { max-width: 560px; margin: 0 auto; color: var(--text-light); font-size: 1.05rem; }
    .section-tag {
        display: inline-block;
        padding: 4px 16px;
        background: rgba(212,168,69,0.1);
        border-radius: 40px;
        color: var(--secondary);
        font-size: 0.8rem;
        font-weight: 600;
        margin-bottom: 12px;
        letter-spacing: 1px;
    }

    /* ===== Cards ===== */
    .card {
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: var(--transition);
    }
    .card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: rgba(212,168,69,0.2); }
    .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
    .card-body { padding: 24px; }
    .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
    .card-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; }
    .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-muted); }
    .card-tag {
        display: inline-block;
        padding: 2px 12px;
        background: rgba(212,168,69,0.1);
        border-radius: 40px;
        color: var(--secondary);
        font-size: 0.75rem;
        font-weight: 600;
    }

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

    /* ===== 特色板块 ===== */
    .feature-card { text-align: center; padding: 36px 24px; }
    .feature-icon {
        width: 64px;
        height: 64px;
        margin: 0 auto 16px;
        background: linear-gradient(135deg, rgba(212,168,69,0.12), rgba(212,168,69,0.05));
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.6rem;
        color: var(--secondary);
        transition: var(--transition);
    }
    .card:hover .feature-icon { background: linear-gradient(135deg, rgba(212,168,69,0.2), rgba(212,168,69,0.08)); transform: scale(1.05); }
    .feature-card h3 { margin-bottom: 8px; font-size: 1.05rem; }
    .feature-card p { font-size: 0.88rem; margin: 0; }

    /* ===== 分类入口 ===== */
    .cat-card {
        position: relative;
        border-radius: var(--radius);
        overflow: hidden;
        height: 260px;
        display: flex;
        align-items: flex-end;
        cursor: pointer;
        transition: var(--transition);
    }
    .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
    .cat-card-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(0deg, rgba(11,26,48,0.85) 0%, rgba(11,26,48,0.15) 70%);
        z-index: 1;
    }
    .cat-card-content { position: relative; z-index: 2; padding: 28px 24px; width: 100%; }
    .cat-card-content h3 { color: var(--text-white); font-size: 1.25rem; margin-bottom: 4px; }
    .cat-card-content p { color: rgba(255,255,255,0.65); font-size: 0.85rem; margin: 0; }
    .cat-card .cat-badge {
        position: absolute;
        top: 16px;
        right: 16px;
        z-index: 2;
        padding: 4px 14px;
        background: var(--secondary);
        border-radius: 40px;
        font-size: 0.75rem;
        font-weight: 700;
        color: var(--primary);
    }

    /* ===== 数据板块 ===== */
    .data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .data-card {
        text-align: center;
        padding: 36px 20px;
        background: rgba(255,255,255,0.04);
        border-radius: var(--radius);
        border: 1px solid rgba(255,255,255,0.06);
        transition: var(--transition);
    }
    .data-card:hover { border-color: rgba(212,168,69,0.2); background: rgba(212,168,69,0.04); }
    .data-card .num { font-size: 2.4rem; font-weight: 800; color: var(--secondary); line-height: 1; margin-bottom: 8px; }
    .data-card p { font-size: 0.88rem; color: rgba(255,255,255,0.55); margin: 0; }

    /* ===== 流程/时间线 ===== */
    .step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
    .step-card { text-align: center; padding: 32px 20px; position: relative; }
    .step-num {
        width: 48px;
        height: 48px;
        margin: 0 auto 16px;
        background: var(--secondary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 1.2rem;
        color: var(--primary);
    }
    .step-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
    .step-card p { font-size: 0.88rem; margin: 0; color: var(--text-light); }

    /* ===== FAQ ===== */
    .faq-list { max-width: 780px; 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: rgba(212,168,69,0.15); }
    .faq-question {
        padding: 18px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-weight: 600;
        font-size: 0.98rem;
        color: var(--text);
        cursor: pointer;
        background: none;
        width: 100%;
        text-align: left;
    }
    .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 0.85rem; }
    .faq-item.active .faq-question i { transform: rotate(180deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        padding: 0 24px;
    }
    .faq-item.active .faq-answer { max-height: 200px; padding: 0 24px 18px; }
    .faq-answer p { font-size: 0.9rem; color: var(--text-light); margin: 0; }

    /* ===== CTA ===== */
    .cta-section {
        background: var(--primary);
        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-content { position: relative; z-index: 1; text-align: center; padding: 60px 0; }
    .cta-content h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 12px; }
    .cta-content p { color: rgba(255,255,255,0.6); max-width: 520px; margin: 0 auto 28px; font-size: 1.05rem; }
    .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

    /* ===== 内容列表 ===== */
    .post-list { display: flex; flex-direction: column; gap: 16px; }
    .post-item {
        display: flex;
        align-items: center;
        gap: 20px;
        padding: 20px 24px;
        background: var(--bg-white);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .post-item:hover { border-color: rgba(212,168,69,0.2); box-shadow: var(--shadow-sm); transform: translateX(4px); }
    .post-item .post-num { font-size: 1.3rem; font-weight: 800; color: var(--secondary); min-width: 36px; }
    .post-item .post-info { flex: 1; }
    .post-item .post-info h4 { font-size: 1rem; margin-bottom: 4px; }
    .post-item .post-info p { font-size: 0.85rem; color: var(--text-light); margin: 0; }
    .post-item .post-meta { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--primary-dark);
        color: rgba(255,255,255,0.6);
        padding: 48px 0 28px;
        border-top: 1px solid rgba(212,168,69,0.08);
    }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
    .footer-brand .logo { margin-bottom: 12px; }
    .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.4); max-width: 320px; }
    .footer-col h4 { color: var(--text-white); font-size: 0.92rem; margin-bottom: 16px; font-weight: 600; }
    .footer-col a { display: block; padding: 4px 0; font-size: 0.85rem; color: rgba(255,255,255,0.45); }
    .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.82rem;
        color: rgba(255,255,255,0.35);
    }
    .footer-bottom a { color: rgba(255,255,255,0.35); }
    .footer-bottom a:hover { color: var(--secondary); }
    .footer-socials { display: flex; gap: 12px; }
    .footer-socials a {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.4);
        transition: var(--transition);
    }
    .footer-socials a:hover { background: var(--secondary); color: var(--primary); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .grid-4 { grid-template-columns: repeat(2, 1fr); }
        .data-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
        body { padding-top: 64px; }
        :root { --header-height: 64px; }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.5rem; }
        .hero h1 { font-size: 2.2rem; }
        .hero { min-height: 460px; }
        .hero-stats { gap: 24px; flex-wrap: wrap; }
        .hero-stat h3 { font-size: 1.4rem; }
        .grid-3 { grid-template-columns: 1fr; gap: 20px; }
        .grid-2 { grid-template-columns: 1fr; gap: 24px; }
        .step-grid { grid-template-columns: 1fr; gap: 16px; }
        .main-nav { display: none; }
        .main-nav.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--primary); padding: 16px 24px; border-bottom: 1px solid rgba(212,168,69,0.15); gap: 4px; }
        .nav-toggle { display: block; }
        .nav-cta { width: 100%; text-align: center; }
        .section { padding: 48px 0; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .data-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .data-card { padding: 24px 12px; }
        .post-item { flex-wrap: wrap; gap: 12px; }
        .post-item .post-meta { white-space: normal; }
        .cta-content h2 { font-size: 1.6rem; }
        .cat-card { height: 200px; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        h1 { font-size: 1.6rem; }
        .hero h1 { font-size: 1.7rem; }
        .hero p { font-size: 0.95rem; }
        .hero-actions { flex-direction: column; }
        .hero-stats { flex-direction: column; gap: 16px; }
        .grid-4 { grid-template-columns: 1fr; }
        .data-grid { grid-template-columns: 1fr; }
        .btn { width: 100%; justify-content: center; }
        .cta-actions { flex-direction: column; }
        .logo { font-size: 1.1rem; }
        .logo-icon { width: 32px; height: 32px; font-size: 0.9rem; }
        .section-header p { font-size: 0.92rem; }
    }

    /* ===== 工具类 ===== */
    .text-center { text-align: center; }
    .mt-16 { margin-top: 16px; }
    .mt-24 { margin-top: 24px; }
    .mb-16 { margin-bottom: 16px; }
    .gap-8 { gap: 8px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .empty-msg { padding: 40px 20px; text-align: center; color: var(--text-muted); font-size: 0.95rem; background: var(--bg-white); border-radius: var(--radius-sm); border: 1px dashed var(--border); }

/* roulang page: article */
:root {
    --primary: #0a1628;
    --primary-light: #132240;
    --primary-dark: #060e1a;
    --accent: #f0b90b;
    --accent-hover: #d4a509;
    --accent-light: #fae8a0;
    --surface: #ffffff;
    --surface-alt: #f5f7fa;
    --surface-card: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #5a6377;
    --text-light: #8e95a8;
    --border: #e2e6ee;
    --border-light: #f0f2f6;
    --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.06);
    --shadow-md: 0 4px 16px rgba(10, 22, 40, 0.08);
    --shadow-lg: 0 12px 40px rgba(10, 22, 40, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --max-width: 1200px;
    --header-h: 72px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::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(--surface-alt);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 1rem; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(240, 185, 11, 0.15);
    transition: background var(--transition), box-shadow var(--transition);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.3px;
}
.logo .logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), #e6a800);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--primary);
}
.logo span { color: var(--accent); font-weight: 700; }

.nav-toggle {
    display: none;
    color: #ffffff;
    font-size: 1.4rem;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); }

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav a {
    position: relative;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 500;
    color: rgba(255,255,255,0.75);
    transition: color var(--transition), background var(--transition);
}
.main-nav a:hover { color: #ffffff; background: rgba(255,255,255,0.06); }
.main-nav a.active { color: var(--accent); background: rgba(240, 185, 11, 0.1); }
.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--accent);
    border-radius: 4px;
}
.main-nav a.nav-cta {
    background: linear-gradient(135deg, var(--accent), #e6a800);
    color: var(--primary);
    font-weight: 700;
    padding: 8px 22px;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 12px rgba(240, 185, 11, 0.3);
}
.main-nav a.nav-cta:hover {
    background: linear-gradient(135deg, var(--accent-hover), #cc9400);
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(240, 185, 11, 0.4);
    transform: translateY(-1px);
}
.main-nav a.nav-cta i { margin-right: 6px; }

@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .main-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 6px;
        border-bottom: 1px solid rgba(240, 185, 11, 0.15);
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    .main-nav a { display: block; width: 100%; padding: 12px 16px; font-size: 1rem; }
    .main-nav a.active::after { display: none; }
    .main-nav a.nav-cta { text-align: center; margin-top: 6px; }
}

.article-banner {
    padding-top: calc(var(--header-h) + 40px);
    padding-bottom: 40px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 60%, #1a2a4a 100%);
    position: relative;
    overflow: hidden;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.08;
    pointer-events: none;
}
.article-banner .container { position: relative; z-index: 1; }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.65); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255,255,255,0.4); }

.article-category {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(240, 185, 11, 0.15);
    color: var(--accent);
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    margin-bottom: 12px;
}
.article-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
    max-width: 860px;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.65);
}
.article-meta i { margin-right: 6px; color: var(--accent); }
.article-meta .meta-item { display: flex; align-items: center; }

@media (max-width: 768px) {
    .article-title { font-size: 1.6rem; }
    .article-meta { gap: 12px; font-size: 0.82rem; }
}

.article-main {
    padding: 48px 0 64px;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
}
.article-content {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 40px 44px;
    border: 1px solid var(--border-light);
}
.article-content .featured-image {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: 28px;
    object-fit: cover;
    aspect-ratio: 16/9;
    background: var(--surface-alt);
}
.article-content .content-body {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}
.article-content .content-body p {
    margin-bottom: 1.4em;
}
.article-content .content-body h2,
.article-content .content-body h3 {
    margin-top: 1.6em;
    margin-bottom: 0.6em;
    color: var(--primary);
}
.article-content .content-body h2 { font-size: 1.6rem; }
.article-content .content-body h3 { font-size: 1.25rem; }
.article-content .content-body ul,
.article-content .content-body ol {
    margin: 1em 0;
    padding-left: 1.6em;
}
.article-content .content-body ul { list-style: disc; }
.article-content .content-body ol { list-style: decimal; }
.article-content .content-body li { margin-bottom: 0.4em; }
.article-content .content-body blockquote {
    border-left: 4px solid var(--accent);
    padding: 12px 20px;
    margin: 1.4em 0;
    background: var(--surface-alt);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}
.article-content .content-body img {
    border-radius: var(--radius-sm);
    margin: 1.2em 0;
    width: 100%;
}
.article-content .content-body a { color: #1a6dd4; border-bottom: 1px solid transparent; }
.article-content .content-body a:hover { border-bottom-color: #1a6dd4; }

.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.article-tags .tag-label { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); margin-right: 4px; }
.article-tags .tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}
.article-tags .tag:hover { background: var(--accent-light); border-color: var(--accent); color: var(--primary); }

.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
}
.article-share .share-label { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); }
.article-share .share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all var(--transition);
}
.article-share .share-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sidebar-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
    font-size: 1.05rem;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}
.sidebar-list { display: flex; flex-direction: column; gap: 10px; }
.sidebar-list a {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 6px 0;
    transition: color var(--transition);
    line-height: 1.4;
}
.sidebar-list a:hover { color: var(--primary); }
.sidebar-list a i { color: var(--accent); font-size: 0.7rem; margin-top: 6px; }
.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    color: #fff;
}
.sidebar-cta h4 { font-size: 1.1rem; color: #fff; margin-bottom: 8px; }
.sidebar-cta p { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-bottom: 16px; }
.sidebar-cta .btn-accent {
    display: inline-block;
    padding: 10px 28px;
    background: var(--accent);
    color: var(--primary);
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.sidebar-cta .btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(240,185,11,0.3); }

@media (max-width: 992px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-content { padding: 28px 20px; }
}

.article-nav {
    margin-top: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.article-nav a {
    display: flex;
    flex-direction: column;
    padding: 18px 24px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.article-nav a:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.article-nav .nav-label { font-size: 0.8rem; color: var(--text-light); margin-bottom: 4px; }
.article-nav .nav-title { font-size: 0.95rem; font-weight: 600; color: var(--primary); }
.article-nav .nav-next { text-align: right; }
@media (max-width: 600px) {
    .article-nav { grid-template-columns: 1fr; }
    .article-nav .nav-next { text-align: left; }
}

.related-section {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}
.related-section .section-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.related-section .section-title i { color: var(--accent); }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.related-card {
    background: var(--surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border); }
.related-card .card-img {
    aspect-ratio: 16/9;
    background: var(--surface-alt);
    overflow: hidden;
}
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 16px 18px 18px; }
.related-card .card-cat {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.related-card .card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition);
}
.related-card:hover .card-title { color: var(--accent); }
.related-card .card-date {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 8px;
}
.related-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
    font-size: 0.95rem;
    background: var(--surface);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border);
}
@media (max-width: 992px) {
    .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .related-grid { grid-template-columns: 1fr; }
}

.article-cta {
    margin-top: 48px;
    padding: 40px 48px;
    background: linear-gradient(135deg, var(--primary), #1a2a4a);
    border-radius: var(--radius-lg);
    text-align: center;
    color: #fff;
}
.article-cta h3 { font-size: 1.5rem; color: #fff; margin-bottom: 10px; }
.article-cta p { font-size: 1rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 20px; }
.article-cta .btn-group { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.article-cta .btn-primary {
    padding: 12px 32px;
    background: var(--accent);
    color: var(--primary);
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    font-size: 1rem;
}
.article-cta .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(240,185,11,0.3); }
.article-cta .btn-outline {
    padding: 12px 32px;
    border: 2px solid rgba(255,255,255,0.3);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition);
    font-size: 1rem;
}
.article-cta .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,185,11,0.08); }
@media (max-width: 600px) {
    .article-cta { padding: 28px 20px; }
    .article-cta h3 { font-size: 1.2rem; }
}

.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.7);
    padding: 48px 0 0;
    border-top: 1px solid rgba(240,185,11,0.08);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 36px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.footer-col a {
    display: block;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.55);
    padding: 5px 0;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
    flex-wrap: wrap;
    gap: 12px;
}
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.5);
    font-size: 1rem;
    transition: all var(--transition);
}
.footer-socials a:hover { background: var(--accent); color: var(--primary); }
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .article-content { padding: 20px 16px; }
    .article-content .content-body { font-size: 0.98rem; }
    .article-title { font-size: 1.35rem; }
}

.not-found-section {
    padding: 100px 0;
    text-align: center;
}
.not-found-section .not-found-icon {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: 20px;
}
.not-found-section h2 { font-size: 2rem; color: var(--primary); margin-bottom: 12px; }
.not-found-section p { color: var(--text-secondary); margin-bottom: 24px; font-size: 1.05rem; }
.not-found-section .btn-back {
    display: inline-block;
    padding: 12px 32px;
    background: var(--accent);
    color: var(--primary);
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.not-found-section .btn-back:hover { background: var(--accent-hover); transform: translateY(-2px); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ff6f60;
            --secondary: #1a237e;
            --secondary-light: #283593;
            --accent: #ffb300;
            --bg-dark: #0b0e17;
            --bg-card: #111827;
            --bg-section: #0f1420;
            --bg-light: #1a1f2e;
            --text-primary: #f1f3f4;
            --text-secondary: #b0b8c5;
            --text-muted: #6b7380;
            --border-color: #2a3040;
            --border-light: #3a4055;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.35);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(229,57,53,0.15);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.28s cubic-bezier(0.25,0.46,0.45,0.94);
            --max-width: 1200px;
            --header-h: 70px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 1000;
            background: rgba(11,14,23,0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo:hover { color: var(--text-primary); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 0.95rem;
            font-weight: 900;
            border-radius: var(--radius-sm);
            letter-spacing: 0;
        }
        .logo span:last-child { color: var(--primary); }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.06);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(229,57,53,0.3);
        }
        .main-nav a.active:hover {
            background: var(--primary-dark);
        }
        .main-nav .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 18px rgba(229,57,53,0.25);
        }
        .main-nav .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(229,57,53,0.4);
        }
        .main-nav .nav-cta i { margin-right: 6px; }

        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: var(--header-h); left: 0; right: 0;
                flex-direction: column;
                background: rgba(11,14,23,0.98);
                backdrop-filter: blur(14px);
                padding: 20px 24px 28px;
                gap: 12px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                align-items: stretch;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 12px 18px;
                text-align: center;
                font-size: 1.05rem;
            }
            .main-nav .nav-cta {
                text-align: center;
                margin-top: 4px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 120px 0 64px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-section) 50%, var(--bg-card) 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11,14,23,0.88) 0%, rgba(11,14,23,0.5) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .banner-breadcrumb a { color: var(--text-muted); }
        .banner-breadcrumb a:hover { color: var(--primary-light); }
        .banner-breadcrumb span { color: var(--text-secondary); }
        .banner-breadcrumb i { font-size: 0.7rem; color: var(--text-muted); }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .page-banner p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        .banner-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .banner-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .banner-meta i { color: var(--primary); }

        @media (max-width: 768px) {
            .page-banner { padding: 100px 0 48px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.6rem; }
            .banner-meta { gap: 12px; }
        }

        /* ===== Section Common ===== */
        section { padding: 72px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .section-header .section-title { margin-bottom: 4px; }
        .section-header .section-sub { margin-bottom: 0; }
        .section-link {
            color: var(--primary-light);
            font-weight: 500;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .section-link:hover { gap: 10px; }

        @media (max-width: 768px) {
            section { padding: 48px 0; }
            .section-title { font-size: 1.5rem; }
            .section-sub { font-size: 0.95rem; }
            .section-header { margin-bottom: 28px; }
        }

        /* ===== Tags / Tabs ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        .tag-item {
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(229,57,53,0.06);
        }
        .tag-item.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 12px rgba(229,57,53,0.25);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 640px) {
            .card-grid { grid-template-columns: 1fr; }
        }

        /* ===== Article Card ===== */
        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .article-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .article-card:hover .card-img {
            transform: scale(1.02);
        }
        .article-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(229,57,53,0.12);
            color: var(--primary-light);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .article-card .card-tag.blue { background: rgba(26,35,126,0.25); color: #7c8cf0; }
        .article-card .card-tag.green { background: rgba(76,175,80,0.15); color: #66bb6a; }
        .article-card .card-tag.amber { background: rgba(255,179,0,0.15); color: #ffd54f; }

        .article-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
            transition: var(--transition);
        }
        .article-card:hover h3 { color: var(--primary-light); }
        .article-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .article-card .card-meta i { margin-right: 4px; }
        .card-meta-left { display: flex; align-items: center; gap: 16px; }
        .card-meta-left span { display: flex; align-items: center; gap: 4px; }

        /* ===== Featured / Large Card ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .featured-main {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .featured-main:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .featured-main .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 0;
        }
        .featured-main .card-body {
            padding: 24px 26px 28px;
        }
        .featured-main .card-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            margin-bottom: 12px;
        }
        .featured-main h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .featured-main .card-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .featured-main .card-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .featured-main .card-meta i { margin-right: 4px; }

        .featured-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .side-article {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 14px;
            transition: var(--transition);
            align-items: flex-start;
        }
        .side-article:hover {
            border-color: var(--border-light);
            background: var(--bg-light);
            transform: translateX(4px);
        }
        .side-article .thumb {
            width: 90px;
            height: 68px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .side-article .side-body { flex: 1; }
        .side-article .side-tag {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .side-article h4 {
            font-size: 0.9rem;
            font-weight: 600;
            margin: 2px 0 4px;
            line-height: 1.4;
            color: var(--text-primary);
        }
        .side-article .side-date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        @media (max-width: 900px) {
            .featured-grid { grid-template-columns: 1fr; }
            .featured-main h3 { font-size: 1.2rem; }
        }
        @media (max-width: 520px) {
            .side-article { flex-direction: column; }
            .side-article .thumb { width: 100%; height: auto; aspect-ratio: 16/9; }
        }

        /* ===== Stats / Data Row ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            margin-top: 16px;
        }
        .stat-item {
            text-align: center;
            padding: 8px 4px;
        }
        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 28px 20px; }
            .stat-item .stat-num { font-size: 1.8rem; }
        }
        @media (max-width: 420px) {
            .stats-row { grid-template-columns: 1fr 1fr; gap: 12px; padding: 20px 12px; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-section) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(145deg, var(--bg-card), var(--bg-light));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px; right: -60px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, rgba(229,57,53,0.08), transparent 70%);
            border-radius: 50%;
        }
        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }
        .cta-box .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 18px rgba(229,57,53,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(229,57,53,0.45);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(229,57,53,0.06);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .cta-box { padding: 36px 24px; }
            .cta-box h2 { font-size: 1.4rem; }
            .btn { padding: 12px 24px; font-size: 0.9rem; }
        }

        /* ===== 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-color);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-question[aria-expanded="true"] + .faq-answer { display: block; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo { font-size: 1.15rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            margin-left: 6px;
            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: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mb-0 { margin-bottom: 0; }
        .mt-16 { margin-top: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

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

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