/* roulang page: index */
:root {
    --brand-50: #eff6ff;
    --brand-100: #dbeafe;
    --brand-200: #bfdbfe;
    --brand-300: #93c5fd;
    --brand-400: #60a5fa;
    --brand-500: #3b82f6;
    --brand-600: #2563eb;
    --brand-700: #1d4ed8;
    --brand-800: #1e40af;
    --brand-900: #1e3a8a;
    --brand-950: #172554;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --text-primary: #0f172a;
    --text-body: #334155;
    --text-muted: #64748b;
    --bg-light: #f8fafc;
    --border-light: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.10);
    --radius-sm: 8px;
    --radius: 16px;
    --radius-lg: 24px;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Arial', sans-serif;
    line-height: 1.6; color: var(--text-body); background: #fff; font-size: 16px;
  }
  a { text-decoration: none; color: inherit; transition: color .2s ease; }
  img { max-width: 100%; display: block; }
  button { cursor: pointer; border: none; background: none; font-family: inherit; }
  input, textarea { font-family: inherit; }
  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

  /* ===== Header ===== */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    position: relative; padding: 14px 24px; max-width: 1280px; margin: 0 auto;
  }
  .header-left, .header-right { display: flex; align-items: center; gap: 28px; flex: 1; }
  .header-right { justify-content: flex-end; }
  .header-center { position: absolute; left: 50%; transform: translateX(-50%); }
  .logo-text { font-size: 20px; font-weight: 800; color: var(--brand-800); letter-spacing: 1px; white-space: nowrap; }
  .logo-text span { color: var(--accent-500); }
  .nav-link { font-size: 15px; font-weight: 500; color: var(--text-body); padding: 8px 4px; position: relative; transition: color .2s; }
  .nav-link:hover { color: var(--brand-700); }
  .nav-link.active { color: var(--brand-800); font-weight: 600; }
  .nav-link.active::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
    background: var(--accent-500); border-radius: 2px;
  }
  .mobile-toggle { display: none; font-size: 24px; color: var(--brand-800); padding: 4px; }
  .mobile-menu { display: none; background: #fff; border-top: 1px solid var(--border-light); padding: 16px 24px; }
  .mobile-menu a { display: block; padding: 12px 0; font-size: 16px; font-weight: 500; color: var(--text-body); border-bottom: 1px solid #f1f5f9; }
  .mobile-menu a:last-child { border-bottom: none; }
  .mobile-menu a.active { color: var(--brand-800); font-weight: 600; }

  /* ===== Button ===== */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; border-radius: 50px; font-size: 15px; font-weight: 600;
    transition: all .25s ease; line-height: 1.4;
  }
  .btn-primary { background: var(--brand-800); color: #fff; box-shadow: 0 4px 14px rgba(30,64,175,0.3); }
  .btn-primary:hover { background: var(--brand-900); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(30,64,175,0.4); }
  .btn-outline { border: 2px solid rgba(255,255,255,0.8); color: #fff; background: transparent; }
  .btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
  .btn-accent { background: var(--accent-500); color: var(--text-primary); box-shadow: 0 4px 14px rgba(245,158,11,0.3); }
  .btn-accent:hover { background: var(--accent-400); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,158,11,0.4); }
  .btn-outline-dark { border: 2px solid var(--brand-800); color: var(--brand-800); }
  .btn-outline-dark:hover { background: var(--brand-50); }

  /* ===== Hero ===== */
  .hero { position: relative; min-height: 560px; display: flex; align-items: center; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; }
  .hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.60) 55%, rgba(30,64,175,0.45) 100%);
  }
  .hero-content { position: relative; z-index: 2; max-width: 720px; padding: 60px 24px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(8px); padding: 6px 16px; border-radius: 50px;
    font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.92); margin-bottom: 20px;
  }
  .hero h1 { font-size: 40px; font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 16px; letter-spacing: 1px; }
  .hero p { font-size: 17px; color: rgba(255,255,255,0.85); line-height: 1.7; margin-bottom: 32px; }
  .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

  /* ===== Section ===== */
  .section { padding: 72px 0; }
  .section-light { background: var(--bg-light); }
  .section-dark { background: var(--text-primary); color: #fff; }
  .section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
  .section-kicker {
    display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px;
    text-transform: uppercase; color: var(--brand-600); background: var(--brand-50);
    padding: 4px 14px; border-radius: 50px; margin-bottom: 12px;
  }
  .section-dark .section-kicker { background: rgba(255,255,255,0.12); color: var(--accent-400); }
  .section-title { font-size: 30px; font-weight: 700; color: var(--text-primary); line-height: 1.3; margin-bottom: 12px; }
  .section-dark .section-title { color: #fff; }
  .section-sub { font-size: 16px; color: var(--text-muted); line-height: 1.6; }
  .section-dark .section-sub { color: rgba(255,255,255,0.7); }

  /* ===== Card ===== */
  .card {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius);
    padding: 28px; transition: all .3s ease; box-shadow: var(--shadow-sm);
  }
  .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--brand-200); }
  .card-icon {
    width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center;
    justify-content: center; font-size: 22px; margin-bottom: 16px;
  }
  .card-title { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
  .card-text { font-size: 14px; line-height: 1.7; color: var(--text-muted); }

  /* ===== About ===== */
  .about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

  /* ===== Category Cards ===== */
  .cat-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .cat-card { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); background: #fff; transition: all .3s ease; }
  .cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
  .cat-img { height: 220px; overflow: hidden; }
  .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
  .cat-card:hover .cat-img img { transform: scale(1.05); }
  .cat-body { padding: 24px; }
  .cat-tag { font-size: 12px; font-weight: 600; color: var(--accent-600); background: #fef3c7; padding: 3px 10px; border-radius: 50px; }
  .cat-title { font-size: 20px; font-weight: 700; color: var(--text-primary); margin: 12px 0 8px; }
  .cat-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }

  /* ===== News ===== */
  .news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .news-item {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius);
    padding: 24px; transition: all .25s ease; display: flex; flex-direction: column;
  }
  .news-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
  .news-tag {
    font-size: 12px; font-weight: 600; color: var(--brand-700); background: var(--brand-50);
    padding: 3px 10px; border-radius: 50px; display: inline-block; width: fit-content; margin-bottom: 10px;
  }
  .news-title { font-size: 16px; font-weight: 600; color: var(--text-primary); line-height: 1.5; margin-bottom: 8px; }
  .news-desc { font-size: 14px; color: var(--text-muted); line-height: 1.6; flex: 1; }
  .news-meta { font-size: 12px; color: #94a3b8; margin-top: 12px; display: flex; align-items: center; gap: 6px; }
  .empty-tip {
    grid-column: 1 / -1; text-align: center; padding: 40px; color: var(--text-muted);
    background: #fff; border-radius: var(--radius); border: 1px dashed var(--border-light);
  }

  /* ===== Stats ===== */
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
  .stat-item {
    text-align: center; padding: 32px 16px; background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius);
    transition: background .3s;
  }
  .stat-item:hover { background: rgba(255,255,255,0.10); }
  .stat-number { font-size: 40px; font-weight: 800; color: var(--accent-400); line-height: 1.2; }
  .stat-label { font-size: 14px; color: rgba(255,255,255,0.75); margin-top: 6px; }

  /* ===== Steps ===== */
  .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
  .step-item {
    position: relative; background: #fff; border: 1px solid var(--border-light);
    border-radius: var(--radius-lg); padding: 40px 28px 28px;
  }
  .step-number {
    font-size: 14px; font-weight: 700; color: var(--accent-600); background: #fef3c7;
    padding: 4px 14px; border-radius: 50px; display: inline-block; margin-bottom: 12px;
  }
  .step-title { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
  .step-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

  /* ===== Features ===== */
  .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .feature-item { display: flex; gap: 16px; padding: 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border-light); }
  .feature-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--brand-50); color: var(--brand-700); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
  .feature-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
  .feature-text { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

  /* ===== FAQ ===== */
  .faq-list { max-width: 800px; margin: 0 auto; }
  .faq-item { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
  .faq-question {
    padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text-primary);
    display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: background .2s;
  }
  .faq-question:hover { background: var(--bg-light); }
  .faq-question .fa-icon { color: var(--brand-600); font-size: 18px; transition: transform .3s; }
  .faq-answer {
    padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease;
    color: var(--text-muted); font-size: 14px; line-height: 1.7;
  }
  .faq-item.open .faq-answer { padding: 0 24px 20px; max-height: 300px; }
  .faq-item.open .faq-question .fa-icon { transform: rotate(180deg); }

  /* ===== CTA ===== */
  .cta-section { position: relative; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; padding: 80px 0; }
  .cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(15,23,42,0.82); }
  .cta-content { position: relative; z-index: 2; text-align: center; max-width: 600px; margin: 0 auto; }
  .cta-title { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 12px; }
  .cta-text { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 28px; }

  /* ===== Footer ===== */
  .site-footer { background: var(--text-primary); color: rgba(255,255,255,0.7); padding: 48px 0 24px; }
  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
  .footer-brand { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
  .footer-brand span { color: var(--accent-500); }
  .footer-desc { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); }
  .footer-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 16px; }
  .footer-links { list-style: none; }
  .footer-links li { margin-bottom: 10px; }
  .footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); transition: color .2s; }
  .footer-links a:hover { color: #fff; }
  .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: 12px; font-size: 13px; }

  /* ===== Mobile ===== */
  @media (max-width: 1024px) {
    .header-left, .header-right { gap: 16px; }
    .logo-text { font-size: 17px; }
    .hero { min-height: 480px; }
    .hero h1 { font-size: 34px; }
  }
  @media (max-width: 768px) {
    .header-left, .header-right { display: none; }
    .mobile-toggle { display: block; }
    .mobile-menu.show { display: block; }
    .header-inner { justify-content: space-between; padding: 12px 16px; }
    .header-center { position: static; transform: none; margin: 0 auto; }
    .section { padding: 56px 0; }
    .section-title { font-size: 26px; }
    .hero h1 { font-size: 28px; }
    .hero p { font-size: 15px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; }
    .news-list, .cat-cards, .about-grid, .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .steps-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
  }
  @media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero { min-height: 420px; }
    .hero-content { padding: 40px 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-number { font-size: 28px; }
    .section-title { font-size: 24px; }
    .btn { padding: 10px 20px; font-size: 14px; }
    .cta-title { font-size: 26px; }
  }

/* roulang page: category1 */
:root {
            --brand-primary: #2b6de8;
            --brand-dark: #193f78;
            --brand-light: #eef4ff;
            --accent: #f59e0b;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --border-light: #e2e8f0;
            --bg-soft: #f8fafc;
            --radius-lg: 20px;
            --radius-md: 14px;
            --shadow-sm: 0 2px 8px rgba(30, 41, 59, 0.06);
            --shadow-md: 0 10px 30px rgba(30, 41, 59, 0.10);
            --shadow-lg: 0 20px 50px rgba(30, 41, 59, 0.14);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            color: var(--text-main);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 16px rgba(30, 41, 59, 0.06);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .header-left,
        .header-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .header-right {
            justify-content: flex-end;
        }
        .header-center {
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--brand-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            font-weight: 400;
            color: var(--text-main);
            font-size: 1.1rem;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-weak);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            background: var(--brand-light);
            color: var(--brand-primary);
        }
        .nav-link.active {
            background: var(--brand-primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(43, 109, 232, 0.30);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 1.1rem;
            color: var(--text-main);
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
        }
        .mobile-toggle:hover {
            background: var(--bg-soft);
        }
        .mobile-menu {
            display: none;
            background: #ffffff;
            border-top: 1px solid var(--border-light);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-main);
        }
        .mobile-menu a:hover {
            background: var(--brand-light);
            color: var(--brand-primary);
        }
        .mobile-menu a.active {
            background: var(--brand-primary);
            color: #fff;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .hero-banner {
            position: relative;
            background: linear-gradient(135deg, #142f68 0%, #1e55c4 55%, #2b6de8 100%);
            padding: 92px 0 100px;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 75% 20%, rgba(245, 158, 11, 0.25) 0%, transparent 50%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(8px);
            margin-bottom: 22px;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0 0 18px;
        }
        .hero-subtitle {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.98rem;
            border: none;
            transition: all 0.25s ease;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.32);
            backdrop-filter: blur(6px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.24);
            transform: translateY(-2px);
        }
        .section {
            padding: 84px 0;
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 54px;
        }
        .section-tag {
            display: inline-block;
            background: var(--brand-light);
            color: var(--brand-primary);
            font-size: 0.83rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin: 0 0 14px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-weak);
            line-height: 1.75;
            margin: 0;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }
        .card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 36px 30px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: rgba(43, 109, 232, 0.25);
        }
        .card-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            background: var(--brand-light);
            color: var(--brand-primary);
            transition: background 0.3s, transform 0.3s;
        }
        .card:hover .card-icon {
            background: var(--brand-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text-main);
        }
        .card-text {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }
        .steps-wrap {
            position: relative;
        }
        .steps-wrapper {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            text-align: left;
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: rgba(43, 109, 232, 0.16);
            line-height: 1;
            margin-bottom: 14px;
            letter-spacing: -0.03em;
        }
        .step-item h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
        }
        .step-item p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.65;
            margin: 0;
        }
        .tip-banner {
            background: linear-gradient(135deg, #fefce8 0%, #fffbeb 100%);
            border: 1px solid #fde68a;
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            margin-top: 40px;
        }
        .tip-banner i {
            color: var(--accent);
            font-size: 1.6rem;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .tip-banner h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #92400e;
            margin: 0 0 6px;
        }
        .tip-banner p {
            font-size: 0.95rem;
            color: #78350f;
            margin: 0;
            line-height: 1.7;
        }
        .content-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 26px;
        }
        .content-card {
            display: flex;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .content-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .content-card .media {
            width: 42%;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }
        .content-card .media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .media img {
            transform: scale(1.06);
        }
        .content-card .body {
            padding: 28px 26px;
        }
        .content-card .body .tag {
            display: inline-block;
            background: var(--brand-light);
            color: var(--brand-primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .content-card .body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.45;
        }
        .content-card .body p {
            font-size: 0.92rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.7;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, border-color 0.25s;
        }
        .faq-item:hover {
            border-color: rgba(43, 109, 232, 0.3);
            box-shadow: var(--shadow-md);
        }
        .faq-item h3 {
            font-size: 1.04rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h3 i {
            color: var(--brand-primary);
            font-size: 0.95rem;
        }
        .faq-item p {
            font-size: 0.94rem;
            color: var(--text-weak);
            line-height: 1.75;
            margin: 0;
        }
        .cta-section {
            background: linear-gradient(135deg, #1e55c4 0%, #2b6de8 60%, #4a8bf5 100%);
            border-radius: 28px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1.06rem;
            color: rgba(255, 255, 255, 0.88);
            margin: 0 auto 32px;
            max-width: 560px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #ffffff;
            color: var(--brand-primary);
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 38px;
            border-radius: 999px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
            transition: all 0.3s ease;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.26);
        }
        .site-footer {
            background: #0f1f3d;
            padding: 60px 0 0;
            margin-top: 84px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .footer-brand span {
            font-weight: 400;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.2rem;
        }
        .footer-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 22px 0 28px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrapper {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .header-left,
            .header-right {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-inner {
                padding: 0 18px;
                height: 64px;
            }
            .mobile-menu.open {
                display: flex;
            }
            .hero-banner {
                padding: 64px 0 72px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .content-cards {
                grid-template-columns: 1fr;
            }
            .content-card {
                flex-direction: column;
            }
            .content-card .media {
                width: 100%;
                height: 220px;
            }
            .steps-wrapper {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-section {
                padding: 44px 24px;
                border-radius: 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .mobile-toggle {
                margin-right: 0;
            }
            .header-center {
                margin: 0 auto;
            }
            .logo-text {
                font-size: 1.15rem;
            }
            .logo-text span {
                font-size: 0.95rem;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .content-card .media {
                height: 180px;
            }
            .tip-banner {
                flex-direction: column;
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
  --brand: #1d3773;
  --brand-light: #3459b3;
  --accent: #e3a63c;
  --bg: #f7f9fc;
  --text: #1f2937;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --radius: 14px;
  --shadow: 0 2px 12px rgba(17,32,64,0.06);
  --shadow-hover: 0 8px 32px rgba(17,32,64,0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; color: inherit; transition: color 0.2s ease; }

button { border: none; background: none; cursor: pointer; font-family: inherit; }

input, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(17,32,64,0.04);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.header-right { justify-content: flex-end; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #4b5563;
  transition: all 0.25s ease;
}

.nav-link:hover {
  color: var(--brand);
  background: rgba(29,55,115,0.06);
}

.nav-link.active {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(29,55,115,0.25);
}

.header-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.logo-text span {
  color: var(--accent);
  font-weight: 600;
  font-size: 16px;
}

.mobile-toggle {
  display: none;
  font-size: 22px;
  color: var(--brand);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  background: rgba(29,55,115,0.06);
  transition: background 0.2s ease;
}

.mobile-toggle:hover { background: rgba(29,55,115,0.1); }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 24px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  gap: 4px;
}

.mobile-menu a {
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: #4b5563;
  transition: all 0.2s ease;
}

.mobile-menu a:hover { background: rgba(29,55,115,0.05); color: var(--brand); }

.mobile-menu a.active {
  background: rgba(29,55,115,0.08);
  color: var(--brand);
  font-weight: 600;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: 18px 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
}

.breadcrumb a { color: var(--brand-light); }

.breadcrumb a:hover { color: var(--brand); }

.breadcrumb i { margin: 0 10px; font-size: 10px; color: #9ca3af; }

.breadcrumb .current { color: #9ca3af; }

/* ---------- Article Hero ---------- */
.article-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(17,32,64,0.92), rgba(29,55,115,0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 70px 0 58px;
  color: #fff;
  text-align: center;
}

.article-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
}

.article-hero h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.35;
  max-width: 840px;
  margin: 0 auto 22px;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.article-hero .hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  font-size: 14px;
  color: rgba(255,255,255,0.82);
}

.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }

.hero-meta i { color: var(--accent); font-size: 13px; }

/* ---------- Article Main ---------- */
.article-main {
  padding: 48px 0 60px;
}

.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}

.article-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 48px;
  border: 1px solid rgba(229,231,235,0.6);
}

.article-content {
  font-size: 15.5px;
  line-height: 1.9;
  color: #374151;
}

.article-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--brand);
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand);
  margin: 28px 0 12px;
  line-height: 1.4;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 18px 22px;
  padding: 0;
}

.article-content li {
  margin-bottom: 8px;
  position: relative;
}

.article-content ul li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 2px;
  margin-right: 12px;
  vertical-align: middle;
}

.article-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: rgba(29,55,115,0.04);
  border-left: 4px solid var(--brand-light);
  border-radius: 0 10px 10px 0;
  color: var(--text);
  font-size: 15px;
  font-style: normal;
}

.article-content img {
  border-radius: 12px;
  margin: 26px auto;
  box-shadow: var(--shadow);
}

.article-content a {
  color: var(--brand-light);
  font-weight: 500;
  border-bottom: 1px solid rgba(52,89,179,0.2);
}

.article-content a:hover { color: var(--brand); border-color: var(--brand); }

/* ---------- Article Tags ---------- */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(29,55,115,0.05);
  color: var(--brand);
  font-size: 12.5px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(29,55,115,0.1);
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

/* ---------- Sidebar ---------- */
.sidebar-sticky {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 28px;
  border: 1px solid rgba(229,231,235,0.6);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-title i {
  color: var(--accent);
  font-size: 15px;
}

.sidebar-info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-info-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-light);
}

.sidebar-info-list li i {
  width: 22px;
  color: var(--accent);
  font-size: 13px;
  text-align: center;
}

.sidebar-info-list li strong {
  color: var(--text);
  font-weight: 600;
}

.sidebar-cover {
  border-radius: 12px;
  overflow: hidden;
  margin-top: 6px;
}

.sidebar-cover img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: #4b5563;
  transition: all 0.2s ease;
}

.sidebar-nav-list a:hover {
  background: rgba(29,55,115,0.05);
  color: var(--brand);
}

.sidebar-nav-list a i {
  font-size: 13px;
  color: var(--accent);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--brand), #3459b3);
  color: #fff;
  border: none;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.sidebar-cta::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}

.sidebar-cta h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.sidebar-cta p {
  font-size: 13.5px;
  color: rgba(255,255,255,0.78);
  margin-bottom: 16px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.sidebar-cta .btn {
  position: relative;
  z-index: 1;
  background: #fff;
  color: var(--brand);
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  transition: all 0.2s ease;
}

.sidebar-cta .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.18);
}

/* ---------- Related Section ---------- */
.related-section {
  padding: 60px 0 70px;
  background: #fff;
  border-top: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--brand);
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 12px;
}

.section-head h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-head .section-sub {
  font-size: 14px;
  color: var(--text-light);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.related-card {
  background: #f9fafb;
  border-radius: 14px;
  padding: 24px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(29,55,115,0.14);
}

.related-card .rel-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-card h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 48px;
  transition: color 0.2s ease;
}

.related-card a:hover h3 { color: var(--brand); }

.related-card p {
  font-size: 13px;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.65;
}

.related-card .rel-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: #9ca3af;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

/* ---------- CTA Section ---------- */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, #0e1730 0%, #1d3773 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(227,166,60,0.18) 0%, transparent 60%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 65%);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.72);
  margin-bottom: 30px;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #1d3773;
  font-weight: 700;
  padding: 14px 34px;
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 18px rgba(227,166,60,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(227,166,60,0.4);
  background: #f5bf5c;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.92);
  font-weight: 500;
  padding: 13px 32px;
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.25s ease;
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0e1730;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand span {
  color: var(--accent);
  font-weight: 600;
  font-size: 16px;
}

.footer-desc {
  font-size: 13.5px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  max-width: 280px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 13.5px;
  transition: all 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: rgba(255,255,255,0.38);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s ease;
}

.footer-bottom a:hover { color: var(--accent); }

/* ---------- NotFound ---------- */
.not-found {
  padding: 80px 0;
  text-align: center;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.not-found .nf-icon {
  font-size: 56px;
  color: #cbd5e1;
  margin-bottom: 20px;
}

.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.not-found p {
  color: var(--text-light);
  font-size: 15px;
  margin-bottom: 28px;
}

.not-found .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand);
  color: #fff;
  padding: 12px 30px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(29,55,115,0.25);
}

.not-found .btn-back:hover {
  background: var(--brand-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(29,55,115,0.32);
}

/* ---------- Responsive ---------- */
@media (min-width: 769px) {
  .mobile-menu { display: none !important; }
}

@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 28px;
  }

  .article-card { padding: 36px; }

  .related-grid { gap: 20px; }

  .related-card { padding: 20px; }
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }

  .header-left .nav-link,
  .header-right .nav-link {
    display: none;
  }

  .header-inner {
    height: 60px;
    padding: 0 16px;
  }

  .header-center {
    position: static;
    transform: none;
    margin: 0 auto;
  }

  .logo-text { font-size: 17px; }

  .logo-text span { font-size: 14px; }

  .mobile-menu.open { display: flex; }

  .article-hero {
    padding: 48px 0 40px;
  }

  .article-hero h1 {
    font-size: 24px;
  }

  .article-hero .hero-meta {
    flex-wrap: wrap;
    gap: 12px;
  }

  .article-main {
    padding: 28px 0 44px;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .article-card {
    padding: 28px 22px;
  }

  .article-content {
    font-size: 15px;
    line-height: 1.85;
  }

  .article-content h2 {
    font-size: 19px;
  }

  .article-content h3 { font-size: 16px; }

  .sidebar-sticky {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .related-section { padding: 44px 0 50px; }

  .section-head h2 { font-size: 24px; }

  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .cta-section { padding: 54px 0; }

  .cta-inner h2 { font-size: 24px; }

  .cta-inner p { font-size: 15px; }

  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .related-grid {
    grid-template-columns: 1fr;
  }

  .sidebar-sticky {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-grid > div:first-child {
    grid-column: auto;
  }

  .article-hero h1 {
    font-size: 20px;
  }

  .hero-meta {
    flex-direction: column;
    gap: 8px;
  }

  .breadcrumb {
    overflow-x: auto;
    white-space: nowrap;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* roulang page: category2 */
:root {
    --primary: #1e3a5f;
    --primary-dark: #14283f;
    --primary-light: #2d5f9e;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --bg: #f4f6fb;
    --surface: #ffffff;
    --text: #182235;
    --text-weak: #5b6578;
    --border: #e3e8f1;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition: all 0.25s ease;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  ul, ol { list-style: none; }
  button { font-family: inherit; cursor: pointer; border: none; background: none; }
  a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 6px;
  }
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 14px rgba(24, 34, 53, 0.05);
  }
  .header-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
  }
  .header-left, .header-right { display: flex; align-items: center; gap: 6px; flex: 1; }
  .header-right { justify-content: flex-end; }
  .header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
  }
  .logo-text {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
    line-height: 1.2;
  }
  .logo-text span { color: var(--accent); font-weight: 700; }
  .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 9px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-weak);
    transition: var(--transition);
  }
  .nav-link:hover { color: var(--primary); background: rgba(30, 58, 95, 0.06); }
  .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    box-shadow: 0 4px 16px rgba(30, 58, 95, 0.28);
  }
  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(30, 58, 95, 0.06);
    color: var(--primary);
    font-size: 18px;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  .mobile-toggle:hover { background: rgba(30, 58, 95, 0.12); }
  .mobile-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 12px 20px 18px;
    background: #fff;
    border-bottom: 1px solid var(--border);
  }
  .mobile-menu a {
    display: block;
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 15px;
    color: var(--text);
    transition: var(--transition);
  }
  .mobile-menu a:hover { background: rgba(30, 58, 95, 0.05); }
  .mobile-menu a.active {
    background: rgba(30, 58, 95, 0.08);
    color: var(--primary);
    font-weight: 600;
  }
  .mobile-menu.open { display: flex; }

  /* ===== Hero Banner ===== */
  .page-hero {
    position: relative;
    padding: 96px 0 88px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #fff;
    text-align: center;
  }
  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 40, 63, 0.94) 0%, rgba(30, 58, 95, 0.82) 55%, rgba(45, 95, 158, 0.66) 100%);
  }
  .page-hero .container { position: relative; z-index: 2; }
  .breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.88);
    margin-bottom: 26px;
    backdrop-filter: blur(6px);
  }
  .breadcrumb a { color: rgba(255, 255, 255, 0.72); transition: var(--transition); }
  .breadcrumb a:hover { color: #fff; }
  .breadcrumb i { font-size: 12px; color: rgba(255, 255, 255, 0.5); }
  .page-hero h1 {
    font-size: 46px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 2px;
    line-height: 1.22;
  }
  .page-hero h1 em {
    font-style: normal;
    color: #fbbf24;
  }
  .page-hero p {
    font-size: 18px;
    max-width: 660px;
    margin: 0 auto 34px;
    color: rgba(255, 255, 255, 0.86);
    line-height: 1.8;
  }
  .hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    border: 1.5px solid transparent;
  }
  .btn-primary {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #1a1a1a;
    box-shadow: 0 8px 22px rgba(245, 158, 11, 0.38);
  }
  .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(245, 158, 11, 0.5); }
  .btn-primary:active { transform: translateY(-1px); }
  .btn-ghost {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.48);
    backdrop-filter: blur(4px);
  }
  .btn-ghost:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-3px); }
  .btn-outline-dark {
    background: #fff;
    color: var(--primary);
    border-color: var(--primary);
  }
  .btn-outline-dark:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(30, 58, 95, 0.22); }

  /* ===== Section ===== */
  .section { padding: 84px 0; }
  .section-alt { background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%); }
  .section-head { text-align: center; max-width: 740px; margin: 0 auto 52px; }
  .section-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 999px;
    background: rgba(245, 158, 11, 0.12);
    color: #b45309;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
  }
  .section-head h2 { font-size: 34px; font-weight: 800; color: var(--text); margin-bottom: 14px; line-height: 1.3; letter-spacing: 0.5px; }
  .section-head p { color: var(--text-weak); font-size: 16px; line-height: 1.9; }

  /* ===== Steps ===== */
  .step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
  .step-card {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 38px 28px 30px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(24, 34, 53, 0.04);
    transition: var(--transition);
    overflow: hidden;
  }
  .step-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: var(--transition);
  }
  .step-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(24, 34, 53, 0.1); }
  .step-card:hover::before { opacity: 1; }
  .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 20px;
    box-shadow: 0 8px 22px rgba(30, 58, 95, 0.26);
  }
  .step-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
  .step-card p { font-size: 14.5px; color: var(--text-weak); line-height: 1.8; }

  /* ===== Feature Cards ===== */
  .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
  .feature-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(24, 34, 53, 0.04);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }
  .feature-card:hover { transform: translateY(-6px); box-shadow: 0 20px 46px rgba(24, 34, 53, 0.13); border-color: rgba(30, 58, 95, 0.16); }
  .feature-cover { position: relative; height: 210px; overflow: hidden; flex-shrink: 0; }
  .feature-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.55s ease; }
  .feature-card:hover .feature-cover img { transform: scale(1.06); }
  .feature-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(24, 34, 53, 0.38), transparent 62%);
  }
  .feature-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    padding: 6px 15px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(24, 34, 53, 0.12);
  }
  .feature-body { padding: 28px 26px 30px; display: flex; flex-direction: column; flex: 1; }
  .feature-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
  .feature-body p { font-size: 14.5px; color: var(--text-weak); margin-bottom: 20px; line-height: 1.85; flex: 1; }
  .feature-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
  }
  .feature-link:hover { color: var(--accent-hover); gap: 11px; }

  /* ===== Content List ===== */
  .content-list { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
  .content-item {
    display: flex;
    align-items: center;
    gap: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    transition: var(--transition);
  }
  .content-item:hover { box-shadow: 0 12px 32px rgba(24, 34, 53, 0.1); transform: translateX(4px); border-color: rgba(30, 58, 95, 0.18); }
  .content-item .date {
    flex-shrink: 0;
    min-width: 58px;
    text-align: center;
    padding: 8px 4px;
    background: rgba(30, 58, 95, 0.05);
    border-radius: 12px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    line-height: 1.4;
  }
  .content-item .date span { display: block; font-size: 15px; font-weight: 800; }
  .content-item h4 { flex: 1; font-size: 16px; font-weight: 600; color: var(--text); transition: var(--transition); line-height: 1.5; }
  .content-item:hover h4 { color: var(--primary); }
  .content-item .cat {
    flex-shrink: 0;
    padding: 4px 14px;
    border-radius: 999px;
    background: rgba(245, 158, 11, 0.1);
    color: #b45309;
    font-size: 12.5px;
    font-weight: 600;
  }
  .content-item .arrow { color: var(--border); font-size: 14px; transition: var(--transition); }
  .content-item:hover .arrow { color: var(--primary); transform: translateX(3px); }

  /* ===== Stats Band ===== */
  .stats-band {
    position: relative;
    padding: 84px 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
  }
  .stats-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 40, 63, 0.96), rgba(30, 58, 95, 0.9));
  }
  .stats-band .container { position: relative; z-index: 2; }
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
  .stat-item { padding: 24px 12px; }
  .stat-num { font-size: 46px; font-weight: 800; color: #fff; line-height: 1.15; margin-bottom: 10px; }
  .stat-num i { font-size: 30px; vertical-align: middle; margin-right: 6px; color: #fbbf24; }
  .stat-label { font-size: 15px; color: rgba(255, 255, 255, 0.78); letter-spacing: 0.5px; }

  /* ===== FAQ ===== */
  .faq-wrap { max-width: 820px; margin: 0 auto; }
  .faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
  }
  .faq-item:hover { border-color: rgba(30, 58, 95, 0.22); box-shadow: 0 8px 22px rgba(24, 34, 53, 0.06); }
  .faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 21px 26px;
    font-size: 16.5px;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    transition: var(--transition);
  }
  .faq-q i { color: var(--primary); font-size: 15px; transition: transform 0.3s ease; flex-shrink: 0; }
  .faq-item.open .faq-q i { transform: rotate(180deg); }
  .faq-a {
    display: none;
    padding: 0 26px 24px;
    font-size: 15px;
    color: var(--text-weak);
    line-height: 1.9;
  }
  .faq-item.open .faq-a { display: block; animation: fadeIn 0.3s ease; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

  /* ===== CTA ===== */
  .cta-section { padding: 20px 0 90px; }
  .cta-band {
    position: relative;
    padding: 72px 0;
    border-radius: 28px;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    text-align: center;
  }
  .cta-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 40, 63, 0.94), rgba(45, 95, 158, 0.84));
  }
  .cta-band .container { position: relative; z-index: 2; }
  .cta-band h2 { font-size: 32px; color: #fff; font-weight: 800; margin-bottom: 14px; letter-spacing: 1px; }
  .cta-band p { color: rgba(255, 255, 255, 0.82); max-width: 560px; margin: 0 auto 32px; font-size: 16px; line-height: 1.85; }

  /* ===== Footer ===== */
  .site-footer {
    background: #14283f;
    color: rgba(255, 255, 255, 0.72);
    padding: 64px 0 28px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .footer-brand { font-size: 24px; font-weight: 800; color: #fff; margin-bottom: 14px; letter-spacing: 0.5px; }
  .footer-brand span { color: #fbbf24; }
  .footer-desc { font-size: 14.5px; line-height: 1.9; max-width: 380px; color: rgba(255, 255, 255, 0.6); }
  .footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
  .footer-links li { margin-bottom: 12px; }
  .footer-links a { font-size: 14.5px; color: rgba(255, 255, 255, 0.65); transition: var(--transition); }
  .footer-links a:hover { color: #fbbf24; padding-left: 5px; }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 26px;
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.5);
  }
  .footer-bottom a { color: rgba(255, 255, 255, 0.5); transition: var(--transition); }
  .footer-bottom a:hover { color: #fbbf24; }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .step-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-hero h1 { font-size: 38px; }
  }
  @media (max-width: 768px) {
    .header-left, .header-right { display: none; }
    .mobile-toggle { display: inline-flex; }
    .header-inner { justify-content: flex-start; gap: 12px; }
    .header-center { position: static; left: auto; transform: none; }
    .logo-text { font-size: 22px; }
    .page-hero { padding: 70px 0 64px; }
    .page-hero h1 { font-size: 32px; letter-spacing: 1px; }
    .page-hero p { font-size: 16px; }
    .section { padding: 62px 0; }
    .section-head h2 { font-size: 27px; }
    .feature-grid { grid-template-columns: 1fr; }
    .step-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-num { font-size: 36px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .content-item { flex-wrap: wrap; }
    .content-item .date { min-width: auto; padding: 6px 14px; }
    .content-item h4 { flex-basis: 100%; order: 10; }
    .content-item .arrow { display: none; }
    .cta-band h2 { font-size: 26px; }
    .cta-section { padding: 12px 0 64px; }
  }
  @media (max-width: 520px) {
    .container { padding: 0 18px; }
    .page-hero h1 { font-size: 27px; }
    .btn { padding: 12px 22px; font-size: 14px; }
    .step-card { padding: 30px 22px 24px; }
    .feature-body { padding: 22px 20px 24px; }
    .stats-band { background-attachment: scroll; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
    .footer-bottom { flex-direction: column; text-align: center; }
  }