/* roulang page: index */
:root {
      --bg-main: #070B19;
      --bg-sub: #0D152D;
      --bg-dark: #03060D;
      --primary: #0066FF;
      --cyber-cyan: #00F2FE;
      --aurora-purple: #7F00FF;
      --text-main: #F0F6FC;
      --text-muted: #8B949E;
      --glass-border: rgba(0, 242, 254, 0.15);
      --glass-bg: rgba(13, 21, 45, 0.65);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      overflow-x: hidden;
    }
    .glass-panel {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    }
    .glass-card {
      background: rgba(13, 21, 45, 0.55);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: var(--cyber-cyan);
      background: rgba(13, 21, 45, 0.85);
      transform: translateY(-4px);
      box-shadow: 0 0 25px rgba(0, 102, 255, 0.35);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0066FF, #00F2FE);
      transition: all 0.3s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 20px rgba(0, 242, 254, 0.6);
      transform: translateY(-2px);
    }
    .text-gradient {
      background: linear-gradient(135deg, #F0F6FC 0%, #00F2FE 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-gradient-purple {
      background: linear-gradient(135deg, #00F2FE 0%, #7F00FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-slide {
      transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
    }