/* roulang page: index */
:root {
      --bg-base: #060B19;
      --surface-1: #0D152D;
      --surface-2: #111C3D;
      --glow-cyan: #00E5FF;
      --accent-indigo: #6366F1;
      --accent-purple: #8B5CF6;
      --text-main: #FFFFFF;
      --text-sub: #94A3B8;
      --border-subtle: rgba(0, 229, 255, 0.12);
      --border-glow: rgba(0, 229, 255, 0.4);
    }
    body {
      background-color: var(--bg-base);
      color: #F0F6FF;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    .glass-card {
      background: rgba(13, 21, 45, 0.65);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
      box-shadow: 0 12px 30px -10px rgba(0, 229, 255, 0.25);
    }
    .glow-btn-primary {
      background: linear-gradient(135deg, #00E5FF 0%, #6366F1 100%);
      color: #030712;
      font-weight: 700;
      box-shadow: 0 0 15px rgba(0, 229, 255, 0.35);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0.65rem 1.5rem;
      border-radius: 9999px;
    }
    .glow-btn-primary:hover {
      box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
      transform: scale(1.02);
      color: #000;
    }
    .glow-btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      color: #00E5FF;
      border: 1px solid rgba(0, 229, 255, 0.3);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0.65rem 1.5rem;
      border-radius: 9999px;
      transition: all 0.3s ease;
    }
    .glow-btn-secondary:hover {
      background: rgba(0, 229, 255, 0.12);
      border-color: #00E5FF;
      color: #ffffff;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.2); }
      100% { opacity: 1; transform: scale(1); }
    }
    details summary::-webkit-details-marker {
      display: none;
    }