/* roulang page: index */
:root {
      --primary: #0284C7;
      --primary-hover: #0369A1;
      --accent: #10B981;
      --bg-main: #F8FAFC;
      --text-main: #0F172A;
      --text-sub: #475569;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: Inter, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.94) 0%, rgba(15, 23, 42, 0.88) 100%), url('/assets/images/c1a27a30dfd431bf.jpg') center/cover no-repeat;
    }
    .flash-gradient {
      background: linear-gradient(90deg, #0284C7 0%, #0369A1 100%);
    }
    .glow-badge {
      box-shadow: 0 0 15px rgba(16, 185, 129, 0.35);
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 4px;
    }
    details[open] summary svg {
      transform: rotate(45deg);
    }
    details summary::-webkit-details-marker {
      display: none;
    }