/* roulang page: index */
:root {
      --primary-orange: #FF6B00;
      --dark-bg: #111827;
      --card-bg: #0B0F19;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #4B5563;
      border-radius: 4px;
    }
    .glow-border:hover {
      box-shadow: 0 0 25px rgba(255, 107, 0, 0.25);
      border-color: rgba(255, 107, 0, 0.4);
    }
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }