/* roulang page: index */
:root {
      --primary-navy: #1e3a8a;
      --accent-orange: #ea580c;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --card-radius: 12px;
      --shadow-soft: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      line-height: 1.75;
    }
    .hero-gradient {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.88) 100%), url('/assets/images/76b52bc95332703e.webp') center/cover no-repeat;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #cbd5e1;
      border-radius: 4px;
    }
    details summary::-webkit-details-marker {
      display: none;
    }