/* roulang page: index */
:root {
      --bg-main: #060B17;
      --bg-secondary: #0B1528;
      --neon-blue: #00F0FF;
      --neon-green: #00FFA3;
      --neon-pink: #D946EF;
      --card-bg: rgba(15, 23, 42, 0.65);
    }
    body {
      background-color: var(--bg-main);
      color: #F8FAFC;
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(0, 240, 255, 0.15);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: rgba(0, 240, 255, 0.5);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
    }
    .btn-glow-primary {
      background: linear-gradient(135deg, #00F0FF 0%, #0284C7 100%);
      color: #060B17;
      font-weight: 700;
      transition: all 0.3s ease;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    }
    .btn-glow-primary:hover {
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
      transform: translateY(-2px);
    }
    .btn-glow-secondary {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid var(--neon-blue);
      color: var(--neon-blue);
      transition: all 0.3s ease;
    }
    .btn-glow-secondary:hover {
      background: rgba(0, 240, 255, 0.1);
      box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
    }
    .text-glow {
      text-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
    }
    .hero-glow-radial {
      background: radial-gradient(circle at 50% 30%, rgba(0, 240, 255, 0.12) 0%, rgba(6, 11, 23, 0) 70%);
    }