/* roulang page: index */
:root {
      --primary: #1e3a8a;
      --primary-light: #3b82f6;
      --primary-dark: #0f172a;
      --accent-gradient: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #0284c7 100%);
      --surface: #ffffff;
      --surface-alt: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #94a3b8;
      --border-color: #e2e8f0;
      --border-subtle: #cbd5e1;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(37, 99, 235, 0.15);
      --transition: all 0.25s ease-in-out;
    }

    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--surface-alt);
      margin: 0;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-light); }
    img { max-width: 100%; height: auto; }
    h1, h2, h3, h4, h5, h6 { color: var(--text-main); font-weight: 700; line-height: 1.35; margin-bottom: 0.75rem; }

    .site-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 极简高端文字导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 0.6rem;
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.3rem;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .header-nav {
      display: flex;
      align-items: center;
      gap: 2.5rem;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 0.5rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }

    /* 按钮与徽章系统 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      font-size: 0.95rem;
      padding: 0.8rem 1.6rem;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--accent-gradient);
      color: #fff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      color: #fff;
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border-subtle);
      background: #fff;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary-light);
      color: var(--primary-light);
      background: #f0f7ff;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.85rem;
      border-radius: var(--radius-full);
      font-size: 0.8rem;
      font-weight: 600;
      background: #eff6ff;
      color: var(--primary-light);
      border: 1px solid #dbeafe;
    }

    /* 通用板块样式 */
    .section-block {
      padding: 5rem 0;
      position: relative;
    }
    .section-block.bg-light { background-color: var(--surface); }
    .section-block.bg-muted { background-color: var(--surface-alt); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
    
    .section-header {
      margin-bottom: 3rem;
    }
    .section-title {
      font-size: 2rem;
      margin-bottom: 1rem;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* 卡片系统 */
    .card-box {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .card-box:hover {
      border-color: #cbd5e1;
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    /* 1. Hero Bento Grid 布局 */
    .hero-section {
      padding: 4rem 0 3.5rem;
      background: radial-gradient(circle at top right, #eff6ff 0%, var(--surface-alt) 60%);
    }
    .bento-grid {
      display: grid;
      grid-template-columns: 1.8fr 1.2fr;
      grid-template-rows: auto auto;
      gap: 1.5rem;
    }
    .bento-main {
      grid-row: 1 / span 2;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 3.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
      box-shadow: var(--shadow-md);
    }
    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 800;
      line-height: 1.25;
      margin: 1.2rem 0;
      color: var(--text-main);
    }
    .hero-h1 span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .bento-sub-1, .bento-sub-2 {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .bento-sub-1 {
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
      color: #fff;
    }
    .bento-sub-1 h3, .bento-sub-1 p { color: #fff; }
    .bento-cta-bar {
      margin-top: 1.5rem;
      grid-column: 1 / span 2;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      box-shadow: var(--shadow-sm);
    }

    /* 2. 安全主张 */
    .pillar-card {
      text-align: left;
    }
    .pillar-icon {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      background: #eff6ff;
      color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
    }

    /* 3. 检查项（核验链路） */
    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      background: #fff;
      border: 1px solid var(--border-color);
      padding: 1.25rem 1.5rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
    }
    .check-item i {
      color: #10b981;
      font-size: 1.25rem;
      margin-top: 0.2rem;
    }

    /* 4. 合规徽章墙 */
    .badge-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      text-align: center;
    }
    .badge-icon-wrap {
      font-size: 2.2rem;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }

    /* 5. 对比选型与边界说明 */
    .table-responsive {
      overflow-x: auto;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      margin-bottom: 0;
    }
    .compare-table th, .compare-table td {
      padding: 1.2rem 1.5rem;
      border-bottom: 1px solid var(--border-color);
      text-align: left;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .highlight-col {
      background: #f0f7ff;
      border-left: 2px solid var(--primary-light);
      border-right: 2px solid var(--primary-light);
    }

    /* 6. 行业资讯流 */
    .news-meta {
      font-size: 0.85rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }

    /* 7. 信任背书与行业指标 */
    .stat-metric {
      text-align: center;
      padding: 1.5rem;
    }
    .stat-num {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    .stat-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 8. 精选解答区 */
    .qa-box {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 1.5rem;
      margin-bottom: 1rem;
    }
    .qa-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 0.5rem;
    }
    .qa-q span {
      background: #dbeafe;
      color: var(--primary);
      width: 24px;
      height: 24px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
    }
    .qa-a {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-left: 2.25rem;
      line-height: 1.7;
    }

    /* 统一页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1e293b;
    }
    .footer-brand {
      color: #fff;
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 1rem;
      display: inline-block;
    }
    .footer-desc {
      font-size: 0.9rem;
      line-height: 1.8;
      margin-bottom: 1.5rem;
      max-width: 380px;
    }
    .footer-title {
      color: #f8fafc;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 1.5rem;
      border-top: 1px solid #1e293b;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* 响应式断点控制 */
    @media screen and (max-width: 1024px) {
      .bento-grid {
        grid-template-columns: 1fr;
      }
      .bento-main {
        grid-row: auto;
        padding: 2.5rem;
      }
      .bento-cta-bar {
        grid-column: auto;
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media screen and (max-width: 768px) {
      .hero-h1 { font-size: 2rem; }
      .section-block { padding: 3.5rem 0; }
      .section-title { font-size: 1.6rem; }
      .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
      }
    }