/* roulang page: index */
:root {
      --bg-dark: #0D1117;
      --bg-surface: #161B22;
      --primary: #00D285;
      --accent: #FF5B22;
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --border-line: rgba(255, 255, 255, 0.08);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.8;
      overflow-x: hidden;
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
    }
    .custom-scroll::-webkit-scrollbar-track {
      background: #0D1117;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #232a35;
      border-radius: 3px;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(0, 210, 133, 0.15) 0%, rgba(13, 17, 23, 0) 70%);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 210, 133, 0.4);
      box-shadow: 0 12px 30px -10px rgba(0, 210, 133, 0.15);
    }