/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-light: #2563EB;
      --secondary: #0284C7;
      --accent: #0D9488;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .hero-banner-bg {
      background: linear-gradient(135deg, rgba(239, 246, 255, 0.95) 0%, rgba(241, 245, 249, 0.92) 100%), url('/assets/images/7bdb6ec3f89c7671.jpg') center/cover no-repeat;
    }
    .custom-card-shadow {
      box-shadow: 0 10px 30px -5px rgba(37, 99, 235, 0.06);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.12);
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(180deg);
    }