/* roulang page: index */
:root {
    --primary-900: #0f2744;
    --primary-700: #1f4269;
    --primary-500: #3f6fa3;
    --accent-500: #c9a062;
    --accent-600: #b07f45;
    --bg-light: #f5f7fa;
    --text-main: #1a1a2e;
    --text-weak: #6b7280;
    --border-light: #e5e7eb;
    --radius-lg: 16px;
    --radius-md: 10px;
    --shadow-card: 0 4px 24px rgba(15, 39, 68, 0.06);
    --shadow-hover: 0 12px 32px rgba(15, 39, 68, 0.12);
  }
  html { scroll-behavior: smooth; }
  body { font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; color: var(--text-main); background: #ffffff; line-height: 1.7; }
  .container-custom { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

  /* 导航 */
  .nav-wrap {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(15,39,68,0.08);
    transition: box-shadow 0.3s ease;
  }
  .nav-wrap.scrolled { box-shadow: 0 8px 30px rgba(15,39,68,0.08); }
  .nav-logo { font-weight: 800; letter-spacing: -0.5px; font-size: 1.25rem; color: var(--primary-900); }
  .nav-logo span { color: var(--accent-500); }
  .nav-link { font-weight: 500; color: var(--primary-900); font-size: 0.95rem; padding: 8px 14px; border-radius: 8px; position: relative; transition: all 0.25s ease; }
  .nav-link:hover { background: rgba(15,39,68,0.05); color: var(--accent-600); }
  .nav-link.active { background: rgba(15,39,68,0.06); color: var(--accent-600); font-weight: 600; }
  .mega-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    width: 480px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(15,39,68,0.16);
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 50;
    border: 1px solid rgba(15,39,68,0.06);
  }
  .mega-item:hover .mega-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(4px); }
  .mega-title { font-weight: 600; font-size: 0.9rem; color: var(--text-weak); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 10px; }
  .mega-link { display: flex; align-items: center; gap: 12px; padding: 10px; border-radius: 10px; transition: all 0.2s ease; }
  .mega-link:hover { background: var(--bg-light); transform: translateX(4px); }
  .mega-link i { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: 8px; background: var(--primary-50); color: var(--primary-600); font-size: 0.9rem; }

  /* Hero */
  .hero-section {
    position: relative;
    background: linear-gradient(135deg, rgba(15,39,68,0.88) 0%, rgba(15,39,68,0.6) 60%, rgba(15,39,68,0.3) 100%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    min-height: 88vh;
    display: flex;
    align-items: center;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 100px;
    font-size: 0.85rem;
    color: #fff;
    backdrop-filter: blur(6px);
  }
  .hero-title { font-size: 3.5rem; font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; color: #fff; }
  .hero-desc { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 600px; }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-500);
    color: #fff;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 100px;
    box-shadow: 0 8px 24px rgba(201,160,98,0.35);
    transition: all 0.3s ease;
  }
  .btn-primary:hover { background: var(--accent-600); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,160,98,0.45); }
  .btn-outline-light {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 100px;
    border: 1px solid rgba(255,255,255,0.4);
    color: #fff;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(6px);
  }
  .btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.7); }

  /* 快讯条 */
  .ticker-wrap { background: var(--primary-900); color: #fff; overflow: hidden; }
  .ticker-track { display: flex; animation: tickerMove 40s linear infinite; white-space: nowrap; }
  .ticker-item { padding: 10px 40px; font-size: 0.9rem; opacity: 0.9; display: flex; align-items: center; gap: 8px; }
  .ticker-item i { color: var(--accent-500); font-size: 0.8rem; }
  @keyframes tickerMove { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

  /* 板块 */
  .section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
  .section-head .kicker { color: var(--accent-600); font-weight: 600; font-size: 0.9rem; letter-spacing: 0.05em; }
  .section-head h2 { font-size: 2.2rem; font-weight: 800; color: var(--primary-900); margin: 10px 0 12px; letter-spacing: -0.01em; }
  .section-head p { color: var(--text-weak); font-size: 1rem; }

  /* 卡片 */
  .feature-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 28px;
    transition: all 0.35s ease;
    box-shadow: var(--shadow-card);
    height: 100%;
    position: relative;
    overflow: hidden;
  }
  .feature-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-500), transparent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
  }
  .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
  .feature-card:hover::after { transform: scaleX(1); }
  .feature-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; background: var(--primary-50); color: var(--primary-700); margin-bottom: 20px; }

  /* 分类卡片 */
  .category-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; height: 320px; display: block; }
  .category-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
  .category-card:hover img { transform: scale(1.05); }
  .category-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15,39,68,0.1) 0%, rgba(15,39,68,0.4) 40%, rgba(15,39,68,0.88) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 28px;
    transition: background 0.3s ease;
  }
  .category-card:hover .category-overlay { background: linear-gradient(180deg, rgba(15,39,68,0.15) 0%, rgba(15,39,68,0.5) 40%, rgba(15,39,68,0.92) 100%); }
  .category-overlay .tag { font-size: 0.8rem; font-weight: 600; color: var(--accent-500); letter-spacing: 0.05em; margin-bottom: 8px; }
  .category-overlay h3 { font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
  .category-overlay p { font-size: 0.9rem; color: rgba(255,255,255,0.8); margin-bottom: 16px; }
  .category-arrow { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; color: #fff; transition: all 0.3s ease; }
  .category-card:hover .category-arrow { background: var(--accent-500); transform: translateX(4px); }

  /* 资讯列表 */
  .post-list-item { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 20px; transition: all 0.3s ease; display: flex; gap: 20px; align-items: flex-start; }
  .post-list-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
  .post-category { display: inline-block; padding: 3px 12px; border-radius: 100px; background: var(--primary-50); color: var(--primary-600); font-size: 0.75rem; font-weight: 600; }
  .post-title { font-size: 1.05rem; font-weight: 600; color: var(--primary-900); line-height: 1.4; margin: 8px 0 6px; transition: color 0.2s ease; }
  .post-title:hover { color: var(--accent-600); }
  .post-excerpt { font-size: 0.9rem; color: var(--text-weak); line-height: 1.6; }
  .post-meta { font-size: 0.8rem; color: #9ca3af; display: flex; gap: 16px; margin-top: 10px; }

  /* 统计 */
  .stats-section { background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 100%); position: relative; overflow: hidden; }
  .stats-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 300px; height: 300px; border-radius: 50%; background: rgba(201,160,98,0.08); }
  .stat-number { font-size: 2.8rem; font-weight: 800; color: #fff; line-height: 1.2; }
  .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

  /* 流程 */
  .step-item { text-align: center; position: relative; padding: 32px 24px; }
  .step-circle { width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 50%; background: var(--primary-50); color: var(--primary-700); display: flex; align-items: center; justify-content: center; font-size: 1.6rem; font-weight: 700; position: relative; z-index: 2; border: 2px solid var(--primary-100); transition: all 0.3s ease; }
  .step-item:hover .step-circle { background: var(--accent-500); color: #fff; border-color: var(--accent-500); transform: scale(1.05); }
  .step-connector { position: absolute; top: 68px; left: calc(50% + 45px); width: calc(100% - 90px); height: 2px; background: var(--border-light); z-index: 1; }
  .step-connector.dashed { background: repeating-linear-gradient(90deg, var(--border-light) 0 8px, transparent 8px 16px); }

  /* 图文区块 */
  .split-block { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
  .split-image { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
  .split-image img { width: 100%; height: 100%; object-fit: cover; display: block; min-height: 340px; }
  .split-image .img-badge { position: absolute; bottom: 20px; left: 20px; background: rgba(255,255,255,0.92); backdrop-filter: blur(8px); padding: 12px 20px; border-radius: 12px; font-size: 0.85rem; font-weight: 600; color: var(--primary-900); box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
  .split-content h3 { font-size: 1.8rem; font-weight: 800; color: var(--primary-900); margin-bottom: 16px; line-height: 1.3; }
  .split-content p { color: var(--text-weak); margin-bottom: 16px; line-height: 1.8; }
  .feature-list { list-style: none; padding: 0; margin: 20px 0; }
  .feature-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--border-light); }
  .feature-list li:last-child { border-bottom: none; }
  .feature-list i { color: var(--accent-500); margin-top: 4px; }

  /* FAQ */
  .faq-item { background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 24px 28px; margin-bottom: 12px; transition: box-shadow 0.3s ease; cursor: pointer; }
  .faq-item:hover { box-shadow: var(--shadow-card); }
  .faq-question { font-weight: 600; font-size: 1.05rem; color: var(--primary-900); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .faq-question i { transition: transform 0.3s ease; color: var(--accent-500); }
  .faq-item.active .faq-question i { transform: rotate(45deg); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; color: var(--text-weak); line-height: 1.7; }
  .faq-item.active .faq-answer { max-height: 400px; padding-top: 14px; }

  /* CTA */
  .cta-section {
    position: relative;
    background: linear-gradient(135deg, rgba(15,39,68,0.92) 0%, rgba(15,39,68,0.75) 100%), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 90px 0;
  }
  .cta-title { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1.3; }

  /* 页脚 */
  .site-footer { background: #0a1a2e; color: rgba(255,255,255,0.7); }
  .footer-link { color: rgba(255,255,255,0.6); transition: all 0.2s ease; font-size: 0.9rem; }
  .footer-link:hover { color: var(--accent-500); padding-left: 4px; }
  .footer-title { color: #fff; font-weight: 600; margin-bottom: 18px; font-size: 1rem; }

  /* 表单相关 */
  .search-input {
    padding: 8px 16px 8px 40px;
    border-radius: 100px;
    border: 1px solid var(--border-light);
    background: var(--bg-light);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.3s ease;
    width: 100%;
  }
  .search-input:focus { border-color: var(--accent-500); background: #fff; box-shadow: 0 0 0 3px rgba(201,160,98,0.15); }

  /* 响应式导航 */
  .mobile-menu { display: none; }
  @media (max-width: 1024px) {
    .desktop-nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero-title { font-size: 2.6rem; }
    .split-block { grid-template-columns: 1fr; gap: 40px; }
    .step-connector { display: none; }
  }
  @media (max-width: 768px) {
    .hero-section { min-height: 70vh; }
    .hero-title { font-size: 2rem; }
    .section-head h2 { font-size: 1.6rem; }
    .stat-number { font-size: 2rem; }
  }
  @media (max-width: 520px) {
    .container-custom { padding: 0 16px; }
    .hero-title { font-size: 1.7rem; }
    .btn-primary, .btn-outline-light { width: 100%; justify-content: center; }
    .post-list-item { flex-direction: column; gap: 12px; }
  }

  /* 移动端菜单 */
  .mobile-menu { display: none; flex-direction: column; background: #fff; border-top: 1px solid var(--border-light); padding: 16px 0; }
  .mobile-menu.open { display: flex; }
  .mobile-menu a { padding: 12px 24px; font-weight: 500; color: var(--primary-900); border-bottom: 1px solid #f5f5f5; }
  .mobile-menu a:hover, .mobile-menu a.active { background: var(--bg-light); color: var(--accent-600); }
  @media (max-width: 1024px) {
    .mobile-menu { display: none; }
    .mobile-menu.open { display: flex; }
    .mobile-menu-btn { display: flex; }
  }

  .badge-soft { display: inline-block; padding: 4px 14px; border-radius: 100px; font-size: 0.78rem; font-weight: 600; background: var(--accent-50); color: var(--accent-600); border: 1px solid rgba(201,160,98,0.2); }
  .badge-primary { display: inline-block; padding: 4px 14px; border-radius: 100px; font-size: 0.78rem; font-weight: 600; background: var(--primary-50); color: var(--primary-600); border: 1px solid rgba(63,111,163,0.2); }

  /* 图片通用 hover */
  .img-hover-zoom { overflow: hidden; border-radius: var(--radius-md); }
  .img-hover-zoom img { transition: transform 0.5s ease; }
  .img-hover-zoom:hover img { transform: scale(1.04); }

  .bg-primary-soft { background: var(--bg-light); }
  .text-gradient { background: linear-gradient(135deg, var(--accent-500), var(--accent-600)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* roulang page: category1 */
:root {
    --primary-900: #111c30;
    --primary-800: #1b2a42;
    --primary-700: #243856;
    --accent-500: #e8891a;
    --accent-400: #f5a53a;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(17,28,48,0.06);
    --shadow-md: 0 6px 20px rgba(17,28,48,0.08);
    --shadow-lg: 0 16px 40px rgba(17,28,48,0.12);
    --radius-sm: 0.5rem;
    --radius-md: 0.85rem;
    --radius-lg: 1.25rem;
    --transition-base: all 0.25s ease;
  }

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

  body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    background: #ffffff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
  }

  button, input {
    font-family: inherit;
  }

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

  /* ===== 导航 ===== */
  .nav-wrap {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 8px rgba(17, 28, 48, 0.04);
  }

  .nav-logo {
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--primary-900);
    letter-spacing: -0.02em;
  }

  .nav-link {
    font-weight: 500;
    font-size: 0.93rem;
    color: var(--text-muted);
    padding: 0.55rem 0.25rem;
    border-bottom: 2px solid transparent;
    transition: var(--transition-base);
    position: relative;
  }

  .nav-link i {
    transition: transform 0.2s ease;
  }

  .nav-link:hover i {
    transform: rotate(180deg);
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--primary-900);
    border-bottom-color: var(--accent-500);
  }

  .nav-link.active {
    font-weight: 600;
  }

  /* Mega Menu */
  .mega-item {
    position: relative;
  }

  .mega-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    min-width: 420px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    pointer-events: none;
  }

  .mega-item:hover .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(4px);
    pointer-events: auto;
  }

  .mega-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
  }

  .mega-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 0.6rem;
    transition: var(--transition-base);
  }

  .mega-link i {
    color: var(--accent-500);
    font-size: 0.95rem;
    width: 20px;
    text-align: center;
  }

  .mega-link:hover {
    background: var(--bg-light);
    transform: translateX(4px);
  }

  /* 移动端菜单按钮 */
  .nav-toggle {
    display: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition-base);
  }

  .nav-toggle:hover {
    background: var(--bg-light);
  }

  .mobile-nav {
    display: none;
    max-height: 0;
    overflow: hidden;
    background: #fff;
    border-top: 1px solid var(--border-color);
    transition: max-height 0.35s ease;
  }

  .mobile-nav.open {
    max-height: 400px;
  }

  .mobile-nav a {
    display: block;
    padding: 13px 24px;
    color: var(--text-color);
    font-size: 0.93rem;
    border-bottom: 1px solid #f1f5f9;
    font-weight: 500;
  }

  .mobile-nav a:hover,
  .mobile-nav a.active {
    color: var(--accent-500);
    background: var(--bg-light);
  }

  /* ===== 按钮 ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 12px 24px;
    border-radius: 0.7rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    line-height: 1.2;
  }

  .btn-primary {
    background: var(--primary-900);
    color: #fff;
    box-shadow: 0 4px 14px rgba(17, 28, 48, 0.2);
  }

  .btn-primary:hover {
    background: var(--primary-800);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(17, 28, 48, 0.25);
  }

  .btn-accent {
    background: var(--accent-500);
    color: #fff;
    box-shadow: 0 4px 14px rgba(232, 137, 26, 0.28);
  }

  .btn-accent:hover {
    background: #d16e12;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 137, 26, 0.35);
  }

  .btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-color);
    color: var(--text-color);
  }

  .btn-outline:hover {
    border-color: var(--primary-900);
    background: var(--bg-light);
    transform: translateY(-1px);
  }

  .btn:focus-visible {
    outline: 3px solid rgba(232, 137, 26, 0.45);
    outline-offset: 2px;
  }

  .btn-lg {
    padding: 15px 32px;
    font-size: 1rem;
  }

  /* ===== 卡片 ===== */
  .card {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
  }

  .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #d1d9e8;
  }

  .card-body {
    padding: 24px;
  }

  .badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
  }

  .badge-accent {
    background: #fef3e2;
    color: #b45309;
  }

  .badge-primary {
    background: #eef2f7;
    color: var(--primary-700);
  }

  .badge-green {
    background: #ecfdf5;
    color: #047857;
  }

  /* ===== 步骤流程 ===== */
  .step-item {
    position: relative;
    padding-left: 0;
  }

  .step-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-900);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.05rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(17,28,48,0.2);
  }

  /* ===== FAQ ===== */
  .faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    background: #fff;
    transition: var(--transition-base);
  }

  .faq-item:hover {
    border-color: #cbd5e1;
    box-shadow: var(--shadow-sm);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary-900);
  }

  .faq-question:hover .fa-chevron-down {
    color: var(--accent-500);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-top: 1px solid transparent;
  }

  .faq-answer.open {
    max-height: 240px;
    border-top: 1px solid var(--border-color);
    padding: 16px 22px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
  }

  /* ===== CTA 区块 ===== */
  .cta-section {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    top: -60%;
    right: -10%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(245, 165, 58, 0.18) 0%, transparent 70%);
    pointer-events: none;
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: var(--primary-900);
    color: rgba(255,255,255,0.7);
  }

  .site-footer .footer-title {
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
  }

  .site-footer .footer-link {
    color: rgba(255,255,255,0.55);
    font-size: 0.9rem;
    transition: all 0.2s ease;
  }

  .site-footer .footer-link:hover {
    color: var(--accent-400);
    padding-left: 4px;
  }

  /* ===== 页面 Hero ===== */
  .page-hero {
    background-size: cover;
    background-position: center;
    position: relative;
    padding: 88px 0 72px;
    color: #fff;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(17,28,48,0.92) 0%, rgba(17,28,48,0.72) 100%);
  }

  .page-hero > .container-custom {
    position: relative;
    z-index: 2;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.83rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 16px;
  }

  .breadcrumb a:hover {
    color: var(--accent-400);
  }

  .breadcrumb i {
    font-size: 0.7rem;
    opacity: 0.6;
  }

  /* ===== 特性图标 ===== */
  .icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-base);
  }

  .card:hover .icon-circle {
    transform: scale(1.06);
  }

  /* ===== 表格 ===== */
  .data-table {
    width: 100%;
    border-collapse: collapse;
  }

  .data-table th {
    background: var(--bg-light);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--primary-900);
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
  }

  .data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.9rem;
  }

  .data-table tr:hover td {
    background: #fafbfc;
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .container-custom {
      padding: 0 20px;
    }
    .desktop-nav {
      display: none;
    }
    .nav-toggle {
      display: block;
    }
    .mobile-nav.open {
      display: block;
    }
    .mega-panel {
      display: none;
    }
  }

  @media (max-width: 768px) {
    .page-hero {
      padding: 64px 0 52px;
    }
    .page-hero h1 {
      font-size: 1.8rem !important;
    }
    .container-custom {
      padding: 0 16px;
    }
    .grid {
      row-gap: 1.25rem;
    }
  }

  @media (max-width: 520px) {
    .page-hero {
      padding: 48px 0 40px;
    }
    .page-hero h1 {
      font-size: 1.55rem !important;
    }
    .btn-lg {
      padding: 12px 22px;
      font-size: 0.9rem;
    }
    .mega-panel {
      position: static;
      transform: none;
      box-shadow: none;
      border: none;
      padding: 12px 0;
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      min-width: auto;
      display: none;
    }
  }

/* roulang page: article */
:root {
  --primary-900: #0f2440;
  --primary-800: #153252;
  --primary-700: #1e4268;
  --primary-600: #2a5582;
  --accent-500: #d4a853;
  --accent-600: #b8923f;
  --accent-400: #e6bd76;
  --bg-body: #f7f9fc;
  --text-body: #1a2b3c;
  --text-muted: #6b7c8f;
  --border-color: #e3eaf2;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 2px 8px rgba(15,42,67,.06);
  --shadow-md: 0 6px 24px rgba(15,42,67,.08);
  --shadow-lg: 0 16px 40px rgba(15,42,67,.12);
  --transition: all .3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a, button, input { transition: var(--transition); }
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
button { background: none; border: none; cursor: pointer; }
.container-custom {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section-padding { padding: 5rem 0; }

/* ===== 导航 ===== */
.nav-wrap {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 16px rgba(15,42,67,.05);
}
.nav-logo span {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-900);
  letter-spacing: -.02em;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-body);
  padding: .5rem .25rem;
  border-radius: var(--radius-sm);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: .25rem;
  right: .25rem;
  bottom: 0;
  height: 2px;
  background: var(--accent-500);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(.4);
  transition: var(--transition);
}
.nav-link:hover, .nav-link:focus-visible {
  color: var(--primary-700);
  outline: none;
}
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}
.nav-link.active { color: var(--primary-900); font-weight: 600; }
.mega-item { position: relative; }
.mega-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 340px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(15,42,67,.15);
  padding: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
  border: 1px solid var(--border-color);
}
.mega-item:hover .mega-panel, .mega-item:focus-within .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.mega-title {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .75rem;
}
.mega-link {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .675rem .75rem;
  border-radius: 10px;
  background: #f8fafd;
  transition: var(--transition);
}
.mega-link:hover {
  background: rgba(212,168,83,.12);
  transform: translateX(4px);
}
.mega-link i { color: var(--accent-600); width: 18px; text-align: center; }
.btn-primary-nav {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--primary-900);
  color: #fff;
  font-weight: 600;
  font-size: .875rem;
  padding: .625rem 1.25rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(15,42,67,.2);
}
.btn-primary-nav:hover { background: var(--primary-800); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(15,42,67,.25); }
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-900);
  color: #fff;
  font-size: 1.125rem;
  align-items: center;
  justify-content: center;
}
.mobile-toggle:hover { background: var(--primary-800); }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--primary-900);
  color: #fff;
  font-weight: 600;
  padding: .75rem 1.75rem;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(15,42,67,.18);
}
.btn-primary:hover { background: var(--primary-800); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(15,42,67,.22); }
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--accent-500);
  color: #fff;
  font-weight: 600;
  padding: .75rem 1.75rem;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(212,168,83,.3);
}
.btn-accent:hover { background: var(--accent-600); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,168,83,.35); }
.btn-ghost-light {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(255,255,255,.12);
  color: #fff;
  font-weight: 600;
  padding: .75rem 1.75rem;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.25);
}
.btn-ghost-light:hover { background: rgba(255,255,255,.22); transform: translateY(-2px); }

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 76px 0 64px;
  background-color: var(--primary-900);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,36,64,.93) 0%, rgba(15,36,64,.82) 50%, rgba(212,168,83,.32) 100%);
  z-index: 1;
}
.article-hero .container-custom { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: rgba(255,255,255,.75); }
.breadcrumb a:hover { color: var(--accent-400); }
.breadcrumb i { font-size: .625rem; opacity: .6; }
.article-tag {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  background: rgba(212,168,83,.18);
  border: 1px solid rgba(212,168,83,.45);
  color: var(--accent-400);
  font-size: .8rem;
  font-weight: 600;
  padding: .35rem .9rem;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.article-hero__title {
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  letter-spacing: -.02em;
  max-width: 900px;
  margin-top: 1rem;
  margin-bottom: 1rem;
}
.article-hero__desc {
  color: rgba(255,255,255,.7);
  font-size: 1.05rem;
  max-width: 760px;
  line-height: 1.8;
}
.article-hero__meta { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* ===== 正文章节 ===== */
.article-body { padding: 3.5rem 0 4.5rem; }
.article-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2.75rem;
}
.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #2d3a4d;
}
.article-content h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--primary-900);
  margin: 2.25rem 0 1rem;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-800);
  margin: 1.85rem 0 .75rem;
}
.article-content p { margin-bottom: 1.25rem; }
.article-content ul, .article-content ol {
  margin-bottom: 1.4rem;
  padding-left: 1.6rem;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: .5rem; }
.article-content a { color: var(--primary-600); text-decoration: underline; }
.article-content a:hover { color: var(--accent-600); }
.article-content img { border-radius: 14px; margin: 1.5rem 0; }
.article-content blockquote {
  border-left: 4px solid var(--accent-500);
  background: #fdfaf3;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 12px 12px 0;
  color: #5b6170;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .95rem;
}
.article-content th, .article-content td {
  border: 1px solid var(--border-color);
  padding: .625rem .875rem;
  text-align: left;
}
.article-content th { background: #f8fafd; font-weight: 600; color: var(--primary-900); }
.article-footer-meta {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: .875rem;
  color: var(--text-muted);
}
.article-footer-meta span { display: inline-flex; align-items: center; gap: .375rem; }
.not-found-box {
  padding: 3rem 1rem;
}
.not-found-box h2 { color: var(--primary-900); }

/* ===== 侧边栏 ===== */
.article-sidebar { position: sticky; top: 100px; align-self: flex-start; }
.sidebar-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}
.sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-900);
  display: flex;
  align-items: center;
  margin-bottom: 1.1rem;
}
.sidebar-list { list-style: none; }
.sidebar-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .65rem 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: .9rem;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li span:first-child { color: var(--text-muted); }
.badge {
  display: inline-block;
  background: rgba(212,168,83,.15);
  color: var(--accent-600);
  font-size: .75rem;
  font-weight: 600;
  padding: .2rem .6rem;
  border-radius: 999px;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem .875rem;
  border-radius: 10px;
  background: #f8fafd;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-body);
}
.sidebar-link:hover { background: rgba(212,168,83,.12); transform: translateX(4px); }
.sidebar-link i:first-child { color: var(--accent-600); width: 20px; text-align: center; }

/* ===== 分类卡片 ===== */
.cat-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.cat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(212,168,83,.4);
}
.cat-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}
.cat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-900);
  color: var(--accent-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-top: -28px;
  margin-left: 2rem;
  border: 4px solid #fff;
  box-shadow: var(--shadow-sm);
}
.cat-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--primary-900); margin-top: 1rem; }
.cat-card p { color: var(--text-muted); font-size: .95rem; line-height: 1.7; margin-top: .6rem; }
.cat-more {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--accent-600);
  font-weight: 600;
  font-size: .9rem;
  margin-top: 1rem;
}
.cat-card:hover .cat-more i { transform: translateX(4px); }
.cat-more i { transition: var(--transition); }
.cat-card:hover .cat-icon { background: var(--accent-500); color: var(--primary-900); }

/* ===== 分区头 ===== */
.section-eyebrow {
  display: inline-block;
  background: rgba(212,168,83,.15);
  color: var(--accent-600);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .4rem 1.2rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-weight: 800;
  color: var(--primary-900);
  line-height: 1.3;
  letter-spacing: -.01em;
}
.section-desc { color: var(--text-muted); font-size: 1rem; margin-top: .75rem; }

/* ===== FAQ ===== */
.faq-wrap {
  background: #f0f4f9;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.4rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-900);
  border-radius: 0;
}
.faq-question:hover { background: rgba(212,168,83,.06); }
.faq-question i {
  color: var(--accent-500);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 1.75rem 1.4rem;
  color: var(--text-muted);
  font-size: .95rem;
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 60%, #1a3550 100%);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(212,168,83,.12);
  z-index: 0;
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-badge {
  display: inline-block;
  background: rgba(212,168,83,.18);
  color: var(--accent-400);
  font-size: .8rem;
  font-weight: 600;
  padding: .35rem 1rem;
  border-radius: 999px;
  margin-bottom: .75rem;
}
.cta-inner h2 { font-size: 1.6rem; font-weight: 800; color: #fff; line-height: 1.4; }
.cta-inner p { color: rgba(255,255,255,.65); margin-top: .5rem; max-width: 520px; }

/* ===== 页脚 ===== */
.site-footer {
  background: #0b1a2e;
  color: rgba(255,255,255,.7);
}
.site-footer .footer-title {
  color: #fff;
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  font-size: .875rem;
  color: rgba(255,255,255,.55);
}
.footer-link:hover { color: var(--accent-400); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .75rem;
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .mobile-toggle { display: flex; }
  .desktop-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: .35rem;
    padding: 1.25rem;
    box-shadow: 0 24px 60px rgba(15,42,67,.18);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    border-bottom: 1px solid var(--border-color);
  }
  .desktop-nav.mobile-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .desktop-nav .nav-link { padding: .75rem .5rem; }
  .mega-panel {
    position: static;
    transform: none;
    width: 100%;
    box-shadow: none;
    border: none;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    padding: .5rem 0 0 .5rem;
    display: none;
  }
  .mega-item.open .mega-panel { display: block; }
  .mega-item:hover .mega-panel { transform: none; opacity: 1; visibility: visible; }
  .sub-nav-toggle { display: inline-flex; }
  .article-body { padding: 2.5rem 0 3rem; }
  .article-card { padding: 1.75rem; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 767px) {
  .container-custom { padding: 0 1rem; }
  .section-padding { padding: 3rem 0; }
  .article-hero { padding: 48px 0 40px; }
  .article-card { padding: 1.25rem; }
  .article-footer-meta { flex-direction: column; gap: .5rem; }
  .article-sidebar { position: static; }
  .footer-bottom { flex-direction: column; }
  .cat-img { height: 150px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
      --primary-900: #1e3a5f;
      --primary-800: #2a4d7d;
      --primary-700: #33639e;
      --primary-100: #e8eef5;
      --accent-500: #f59e0b;
      --accent-600: #d97706;
      --accent-50: #fffbeb;
      --text-body: #334155;
      --text-muted: #64748b;
      --bg-light: #f8fafc;
      --border-light: #e2e8f0;
      --radius-lg: 16px;
      --radius-md: 12px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1);
    }

    /* ===== 基础 Reset ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
      color: var(--text-body);
      background: #fff;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease;
    }
    button {
      cursor: pointer;
      font-family: inherit;
    }

    /* ===== 容器 ===== */
    .container-custom {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== 导航 ===== */
    .nav-wrap {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
    }
    .nav-logo {
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary-900);
      letter-spacing: -0.01em;
      line-height: 1.2;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 8px 4px;
      transition: color 0.25s, border-color 0.25s;
      border-bottom: 2px solid transparent;
      white-space: nowrap;
    }
    .nav-link:hover {
      color: var(--primary-900);
    }
    .nav-link.active {
      color: var(--primary-900);
      border-bottom-color: var(--accent-500);
    }

    /* ===== Mega 菜单 ===== */
    .mega-item {
      position: relative;
    }
    .mega-panel {
      position: absolute;
      top: calc(100% + 12px);
      left: 50%;
      transform: translateX(-50%) translateY(10px);
      width: 380px;
      background: #fff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      padding: 20px;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      border: 1px solid var(--border-light);
      z-index: 60;
    }
    .mega-item:hover .mega-panel,
    .mega-item:focus-within .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateX(-50%) translateY(0);
    }
    .mega-title {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: 1px solid var(--border-light);
    }
    .mega-link {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 10px;
      border-radius: 8px;
      transition: all 0.2s;
    }
    .mega-link i {
      color: var(--accent-500);
      font-size: 0.85rem;
      width: 20px;
      text-align: center;
    }
    .mega-link:hover {
      background: var(--accent-50);
    }

    /* ===== 按钮 ===== */
    .btn-primary,
    .btn-accent,
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 13px 28px;
      border-radius: 10px;
      transition: all 0.3s ease;
      border: none;
      line-height: 1.4;
    }
    .btn-primary {
      background: var(--primary-900);
      color: #fff;
      box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-800);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(30, 58, 95, 0.3);
    }
    .btn-accent {
      background: var(--accent-500);
      color: #fff;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }
    .btn-accent:hover {
      background: var(--accent-600);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
    }
    .btn-outline {
      border: 2px solid var(--border-light);
      background: transparent;
      color: var(--text-body);
    }
    .btn-outline:hover {
      border-color: var(--primary-900);
      color: var(--primary-900);
    }

    /* ===== Banner ===== */
    .page-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(30, 58, 95, 0.93), rgba(51, 99, 158, 0.82)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      padding: 84px 0 64px;
    }
    .page-banner h1 {
      color: #fff;
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
    }
    .page-banner p {
      color: rgba(255, 255, 255, 0.8);
      font-size: 1.05rem;
      max-width: 620px;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.7);
    }
    .breadcrumb a:hover {
      color: var(--accent-500);
    }

    /* ===== 服务卡片 ===== */
    .service-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      transition: all 0.3s ease;
      height: 100%;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }
    .service-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    /* ===== 统计数字 ===== */
    .stat-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--primary-900);
      line-height: 1.1;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* ===== 流程步骤 ===== */
    .step-item {
      position: relative;
      padding-left: 60px;
    }
    .step-number {
      position: absolute;
      left: 0;
      top: 0;
      width: 42px;
      height: 42px;
      background: var(--accent-50);
      border: 2px solid var(--accent-500);
      color: var(--accent-600);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .step-line {
      position: absolute;
      left: 21px;
      top: 44px;
      bottom: -16px;
      width: 2px;
      background: var(--border-light);
    }
    .step-item:last-child .step-line {
      display: none;
    }

    /* ===== FAQ ===== */
    .faq-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 0 24px;
      transition: all 0.3s ease;
      background: #fff;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-sm);
      border-color: #cbd5e1;
    }
    .faq-item summary {
      cursor: pointer;
      font-weight: 600;
      color: var(--primary-900);
      font-size: 1rem;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
      gap: 16px;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 0.85rem;
      color: var(--accent-500);
      transition: transform 0.3s;
      flex-shrink: 0;
    }
    .faq-item[open] summary::after {
      transform: rotate(180deg);
    }
    .faq-item .faq-answer {
      padding: 0 0 20px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
      border-radius: 24px;
      padding: 56px 48px;
      position: relative;
      overflow: hidden;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -30%;
      width: 400px;
      height: 400px;
      background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
      opacity: 0.12;
      border-radius: 50%;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--primary-900);
      color: #fff;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }
    .footer-link {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.9rem;
      transition: color 0.25s;
    }
    .footer-link:hover {
      color: var(--accent-500);
    }

    /* ===== 移动端菜单按钮 ===== */
    .mobile-menu-btn {
      width: 42px;
      height: 42px;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      background: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--primary-900);
      transition: all 0.25s;
    }
    .mobile-menu-btn:hover {
      background: var(--accent-50);
      border-color: var(--accent-500);
    }

    /* ===== 通用区块 ===== */
    .section-padding {
      padding: 88px 0;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .desktop-nav {
        display: none;
      }
      .mobile-menu-btn {
        display: flex;
      }
      .page-banner {
        padding: 56px 0 40px;
      }
      .page-banner h1 {
        font-size: 2rem;
      }
      .section-padding {
        padding: 64px 0;
      }
    }

    @media (max-width: 768px) {
      .container-custom {
        padding: 0 16px;
      }
      .page-banner h1 {
        font-size: 1.6rem;
      }
      .page-banner p {
        font-size: 0.95rem;
      }
      .cta-section {
        padding: 32px 20px;
        border-radius: 16px;
      }
      .service-card {
        padding: 24px 20px;
      }
      .nav-logo {
        font-size: 1.15rem;
      }
      .nav-logo .w-10 {
        width: 36px;
        height: 36px;
        border-radius: 10px;
      }
      .nav-logo .w-10 i {
        font-size: 0.9rem;
      }
    }

    @media (max-width: 520px) {
      .page-banner {
        padding: 40px 0 28px;
      }
      .stat-number {
        font-size: 2rem;
      }
      .step-item {
        padding-left: 52px;
      }
      .step-number {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
      }
      .step-line {
        left: 18px;
      }
      .cta-section {
        padding: 28px 16px;
      }
      .faq-item {
        padding: 0 16px;
      }
      .faq-item summary {
        font-size: 0.92rem;
      }
    }

/* roulang page: category3 */
:root {
  --primary-900: #1e3a5f;
  --primary-800: #1e40af;
  --primary-700: #1d4ed8;
  --primary-600: #2563eb;
  --primary-50: #eff6ff;
  --accent-500: #f59e0b;
  --accent-400: #fbbf24;
  --accent-600: #d97706;
  --text-dark: #1e293b;
  --text-body: #475569;
  --text-light: #94a3b8;
  --border-light: #e2e8f0;
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 24px rgba(30, 58, 95, 0.08);
  --shadow-hover: 0 8px 32px rgba(30, 58, 95, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-body);
  background: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

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

button, input {
  font-family: inherit;
}

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

/* ===== 导航 ===== */
.nav-wrap {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 20px rgba(15, 23, 42, 0.04);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-900);
  letter-spacing: -0.02em;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  padding: 8px 0;
  position: relative;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-500);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--primary-800);
}

.nav-link:hover {
  color: var(--primary-800);
}

.mega-item {
  position: relative;
}

.mega-panel {
  position: absolute;
  top: calc(100% + 24px);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
  padding: 24px;
  min-width: 420px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 60;
}

.mega-item:hover .mega-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.mega-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.mega-link i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-50);
  color: var(--primary-700);
  border-radius: 8px;
  font-size: 14px;
}

.mega-link:hover {
  background: var(--primary-50);
  transform: translateX(4px);
}

.mobile-menu-btn {
  display: none;
}

.mobile-nav {
  display: none;
}

/* ===== Hero ===== */
.security-hero {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #1e40af 100%);
  overflow: hidden;
}

.security-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.15;
}

.security-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.security-hero .hero-content {
  position: relative;
  z-index: 2;
}

.security-hero .hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.security-hero .hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  line-height: 1.8;
  margin-top: 20px;
}

.hero-tag-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(10px);
}

.hero-stat-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
  max-width: 560px;
}

.hero-stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  backdrop-filter: blur(10px);
}

.hero-stat .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-400);
  line-height: 1.2;
}

.hero-stat .label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

/* ===== 板块标题 ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-700);
  background: var(--primary-50);
  padding: 6px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-body);
  max-width: 640px;
  line-height: 1.8;
  margin-top: 12px;
}

/* ===== 轮播/重点区域 ===== */
.feature-card {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: #ffffff;
  padding: 28px;
  transition: var(--transition);
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-500), var(--primary-600));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-body);
}

/* ===== 安全等级卡片 ===== */
.security-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.security-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: transparent;
}

.security-card .card-body {
  padding: 28px;
}

.security-level {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}

.level-high {
  background: #ecfdf5;
  color: #059669;
}

.level-mid {
  background: #fffbeb;
  color: #d97706;
}

.security-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-top: 14px;
}

.security-card ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.security-card ul li {
  font-size: 0.88rem;
  color: var(--text-body);
  padding: 6px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.security-card ul li i {
  color: var(--primary-600);
  font-size: 12px;
  margin-top: 4px;
}

/* ===== 信息快讯条 ===== */
.ticker-bar {
  background: var(--primary-900);
  color: #ffffff;
  padding: 14px 0;
  overflow: hidden;
}

.ticker-inner {
  display: flex;
  gap: 48px;
  animation: ticker-scroll 30s linear infinite;
  width: max-content;
}

.ticker-inner span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.8);
}

.ticker-inner i {
  color: var(--accent-400);
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== FAQ ===== */
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary-200);
  box-shadow: 0 4px 12px rgba(30, 58, 95, 0.05);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--primary-600);
  transition: transform 0.3s ease;
  font-size: 0.9rem;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item .faq-content {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-body);
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.1;
}

.cta-section .cta-inner {
  position: relative;
  z-index: 2;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent-500);
  color: var(--primary-900);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: 50px;
  transition: var(--transition);
  border: 2px solid transparent;
}

.cta-btn:hover {
  background: var(--accent-400);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

.cta-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 50px;
  transition: var(--transition);
  background: transparent;
}

.cta-btn-outline:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
}

.footer-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  padding-bottom: 12px;
  position: relative;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent-500);
  border-radius: 2px;
}

.footer-link {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  display: inline-flex;
  align-items: center;
  transition: all 0.3s ease;
  padding: 4px 0;
}

.footer-link:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  margin-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    background: #ffffff;
    font-size: 1.2rem;
    color: var(--primary-900);
    cursor: pointer;
  }
  .mobile-nav.open {
    display: block;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
    padding: 20px 24px;
    z-index: 50;
  }
  .mobile-nav.open .mobile-nav-link {
    display: block;
    padding: 14px 0;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-light);
    font-size: 0.95rem;
  }
  .mobile-nav.open .mobile-nav-link.active {
    color: var(--primary-700);
  }
  .security-hero .hero-title {
    font-size: 2.2rem;
  }
  .section-title {
    font-size: 1.7rem;
  }
}

@media (max-width: 768px) {
  .container-custom {
    padding: 0 16px;
  }
  .security-hero {
    padding: 68px 0 56px;
  }
  .security-hero .hero-title {
    font-size: 1.7rem;
  }
  .security-hero .hero-subtitle {
    font-size: 0.95rem;
  }
  .hero-stat-wrap {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  .hero-stat {
    padding: 14px 10px;
  }
  .hero-stat .num {
    font-size: 1.4rem;
  }
  .hero-stat .label {
    font-size: 0.7rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .mega-panel {
    display: none;
  }
}

@media (max-width: 520px) {
  .container-custom {
    padding: 0 14px;
  }
  .security-hero {
    padding: 52px 0 40px;
  }
  .security-hero .hero-title {
    font-size: 1.5rem;
  }
  .security-hero .hero-subtitle {
    font-size: 0.88rem;
    line-height: 1.7;
  }
  .hero-tag-list {
    gap: 8px;
  }
  .hero-tag {
    font-size: 0.75rem;
    padding: 4px 10px;
  }
  .hero-stat-wrap {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  .hero-stat .num {
    font-size: 1.2rem;
  }
  .hero-stat .label {
    font-size: 0.65rem;
  }
  .section-title {
    font-size: 1.3rem;
  }
  .section-label {
    font-size: 0.7rem;
    padding: 4px 12px;
  }
  .feature-card {
    padding: 20px;
  }
  .security-card .card-body {
    padding: 20px;
  }
  .cta-btn, .cta-btn-outline {
    width: 100%;
    justify-content: center;
  }
}