/* roulang page: index */
:root {
      --primary: #122620;
      --accent: #00B578;
      --bg-surface: #F6F8F7;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      line-height: 1.65;
    }
    .hero-bg {
      background-image: linear-gradient(to right, rgba(18, 38, 32, 0.95), rgba(11, 23, 20, 0.82)), url('/assets/images/8b04485146c34a46.webp');
      background-size: cover;
      background-position: center;
    }
    .dark-section-bg {
      background-image: linear-gradient(to bottom, rgba(11, 23, 20, 0.96), rgba(18, 38, 32, 0.98)), url('/assets/images/bcb484ec251f1ea8.webp');
      background-size: cover;
      background-position: center;
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(0, 181, 120, 0.14);
      border-color: #00B578;
    }
    details summary::-webkit-details-marker {
      display: none;
    }