/* roulang page: index */
:root {
      --bg-main: #0A0F1D;
      --bg-card: rgba(15, 23, 42, 0.65);
      --border-glow: rgba(0, 229, 255, 0.25);
      --neon-cyan: #00E5FF;
      --neon-blue: #0066FF;
    }
    body {
      background-color: var(--bg-main);
      color: #94A3B8;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(0, 229, 255, 0.45);
      transform: translateY(-3px);
      box-shadow: 0 12px 40px 0 rgba(0, 102, 255, 0.2);
    }
    .glow-btn-primary {
      background: linear-gradient(135deg, #0066FF 0%, #00C2FF 100%);
      color: #FFFFFF;
      position: relative;
      transition: all 0.3s ease;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
      transform: translateY(-2px);
    }
    .glow-btn-secondary {
      background: rgba(14, 23, 42, 0.8);
      border: 1px solid rgba(0, 229, 255, 0.3);
      color: #00E5FF;
      transition: all 0.3s ease;
    }
    .glow-btn-secondary:hover {
      background: rgba(0, 229, 255, 0.15);
      border-color: #00E5FF;
      box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
    }
    .hero-glow-bg {
      background: radial-gradient(circle at 50% 30%, rgba(0, 102, 255, 0.18) 0%, rgba(10, 15, 29, 0) 70%);
    }
    .border-glow-subtle {
      border: 1px solid rgba(0, 229, 255, 0.15);
    }