/* roulang page: index */
:root {
      --bg-dark: #070B14;
      --bg-surface: #0B132B;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-cyan: rgba(0, 210, 255, 0.2);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-cyan);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
      transition: all 0.3s ease;
    }
    .glass-card:hover {
      border-color: rgba(0, 210, 255, 0.45);
      box-shadow: 0 0 25px rgba(0, 102, 255, 0.25);
      transform: translateY(-2px);
    }
    .glow-btn-primary {
      background: linear-gradient(135deg, #0066FF 0%, #00D2FF 100%);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 25px rgba(0, 210, 255, 0.6);
      transform: translateY(-1px);
    }
    .glow-btn-outline {
      border: 1px solid rgba(0, 210, 255, 0.5);
      color: #00D2FF;
      transition: all 0.3s ease;
    }
    .glow-btn-outline:hover {
      background: rgba(0, 210, 255, 0.12);
      border-color: #00D2FF;
      box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
    }
    .badge-tag {
      background: rgba(0, 245, 212, 0.1);
      border: 1px solid rgba(0, 245, 212, 0.3);
      color: #00F5D4;
    }
    .text-gradient {
      background: linear-gradient(135deg, #FFFFFF 20%, #00D2FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-gradient-cyan {
      background: linear-gradient(135deg, #00D2FF 0%, #00F5D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }