/* roulang page: index */
:root {
      --bg-main: #0B1120;
      --bg-card: rgba(30, 41, 59, 0.7);
      --border-glow: rgba(6, 182, 212, 0.25);
      --cyan-main: #06B6D4;
      --purple-main: #6366F1;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-panel {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--border-glow);
    }
    .glow-btn {
      box-shadow: 0 0 25px rgba(6, 182, 212, 0.45);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-btn:hover {
      box-shadow: 0 0 35px rgba(99, 102, 241, 0.65);
      transform: translateY(-2px);
    }
    .glow-border:hover {
      border-color: rgba(6, 182, 212, 0.6);
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
    }
    .text-gradient {
      background: linear-gradient(135deg, #06B6D4 0%, #38BDF8 50%, #818CF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }