/* roulang page: index */
:root {
      --primary: #1D4ED8;
      --secondary: #0284C7;
      --dark: #0F172A;
      --body-bg: #FFFFFF;
      --section-alt: #F8FAFC;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: #334155;
      background-color: var(--body-bg);
      scroll-behavior: smooth;
    }
    .hero-bg {
      background: linear-gradient(rgba(15, 23, 42, 0.78), rgba(15, 23, 42, 0.85)), url('/assets/images/5341056bada52615.webp') center/cover no-repeat;
    }
    .card-shadow {
      box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.3s ease-in-out;
    }
    .card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    }
    details summary::-webkit-details-marker {
      display: none;
    }