/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #0B6E99;
      --primary-light: #e8f0f6;
      --accent: #F85C3A;
      --accent-hover: #e64a2e;
      --bg: #F5F9FC;
      --white: #FFFFFF;
      --text: #1A1D22;
      --text-secondary: #5F6B7A;
      --border: #E2E8F0;
      --card-shadow: 0 4px 20px rgba(0,0,0,0.04);
      --card-hover-shadow: 0 12px 32px rgba(11,110,153,0.10);
      --radius-sm: 8px;
      --radius: 12px;
      --radius-lg: 16px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Inter', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text);
      margin: 0;
      padding: 0;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航毛玻璃 */
    .nav-blur {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226,232,240,0.8);
    }

    /* 卡片微交互 */
    .card-hover {
      transition: all 300ms ease;
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--card-shadow);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
    }

    /* 自定义焦点环 */
    .focus-ring:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* 导航下划线动画 */
    .nav-link {
      position: relative;
      color: var(--text-secondary);
      font-size: 0.875rem;
      font-weight: 500;
      transition: color 200ms;
      text-decoration: none;
      padding: 0.5rem 0;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%) scaleX(0);
      width: 70%;
      height: 2px;
      background-color: var(--primary);
      transition: transform 250ms ease;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .nav-link:hover::after {
      transform: translateX(-50%) scaleX(1);
    }

    /* Hero网格纹理 */
    .hero-grid-bg {
      background-image: linear-gradient(rgba(11,110,153,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(11,110,153,0.03) 1px, transparent 1px);
      background-size: 40px 40px;
    }

    /* 数字等宽 */
    .tabular-nums {
      font-variant-numeric: tabular-nums;
      font-feature-settings: "tnum";
    }

    /* 手风琴细节 */
    details[open] summary {
      color: var(--primary);
      font-weight: 600;
    }
    details summary {
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0;
      font-weight: 500;
      color: var(--text);
      transition: color 200ms;
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details .faq-answer {
      padding: 0 0 20px 0;
      color: var(--text-secondary);
      font-size: 0.875rem;
      line-height: 1.7;
    }
    details[open] {
      background-color: #F5F9FC;
      border-radius: var(--radius);
      padding: 0 20px;
      margin: 0 -20px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    }

    /* 汉堡菜单 */
    .mobile-menu {
      display: none;
    }
    @media (max-width: 768px) {
      .mobile-menu {
        display: block;
      }
      .desktop-nav {
        display: none;
      }
      .mobile-nav-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: white;
        padding: 24px;
        box-shadow: 0 20px 30px rgba(0,0,0,0.08);
        gap: 16px;
      }
    }