/* roulang page: index */
:root {
      --primary: #0A535A;
      --secondary: #1D8A8A;
      --accent: #D96A43;
      --bg: #F8FAFB;
      --text: #112628;
      --body: #42585A;
      --border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg);
      color: var(--body);
      overflow-x: hidden;
      line-height: 1.7;
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(10, 83, 90, 0.94) 0%, rgba(7, 38, 42, 0.96) 100%), url('/assets/images/89a8c3bed4d06d60.webp');
      background-size: cover;
      background-position: center;
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -10px rgba(10, 83, 90, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
    }
    .badge-pill {
      background: rgba(29, 138, 138, 0.12);
      color: #0A535A;
      border: 1px solid rgba(29, 138, 138, 0.25);
    }
    .card-hover-trans {
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover-trans:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 36px -12px rgba(10, 83, 90, 0.16);
      border-color: rgba(29, 138, 138, 0.4);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }