/* roulang page: index */
:root {
      --bg-main: #070B19;
      --bg-card: rgba(16, 26, 54, 0.72);
      --neon-cyan: #00E5FF;
      --tech-blue: #2563EB;
      --text-dim: #94A3B8;
      --border-glow: rgba(0, 229, 255, 0.2);
    }
    body {
      background-color: var(--bg-main);
      color: #F8FAFC;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--border-glow);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(0, 229, 255, 0.5);
      box-shadow: 0 10px 30px -10px rgba(0, 229, 255, 0.25);
      transform: translateY(-3px);
    }
    .glow-btn {
      background: linear-gradient(135deg, #2563EB 0%, #00E5FF 100%);
      color: #070B19;
      font-weight: 600;
      box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
      transition: all 0.3s ease;
    }
    .glow-btn:hover {
      box-shadow: 0 0 30px rgba(0, 229, 255, 0.65);
      transform: scale(1.03);
    }
    .radar-pulse {
      position: relative;
    }
    .radar-pulse::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 100%;
      height: 100%;
      border-radius: 50%;
      border: 1px solid #00E5FF;
      transform: translate(-50%, -50%);
      animation: radarScan 3s infinite linear;
    }
    @keyframes radarScan {
      0% { width: 0; height: 0; opacity: 1; }
      100% { width: 180%; height: 180%; opacity: 0; }
    }
    .badge-cyan {
      background: rgba(0, 229, 255, 0.1);
      border: 1px solid rgba(0, 229, 255, 0.3);
      color: #00E5FF;
    }