/* roulang page: index */
:root {
      --bg-dark: #0B1120;
      --bg-card: rgba(30, 41, 59, 0.7);
      --border-card: rgba(255, 255, 255, 0.08);
      --primary-cyan: #06B6D4;
      --primary-sky: #0EA5E9;
      --pulse-green: #10B981;
      --glow-orange: #F59E0B;
    }
    body {
      background-color: var(--bg-dark);
      color: #E2E8F0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      backdrop-filter: blur(12px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(6, 182, 212, 0.4);
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.15);
    }
    .glow-btn {
      background: linear-gradient(135deg, #06B6D4, #0EA5E9);
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
      transition: all 0.3s ease;
    }
    .glow-btn:hover {
      box-shadow: 0 0 28px rgba(6, 182, 212, 0.6);
      transform: translateY(-2px);
    }
    .text-glow {
      text-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
    }
    .section-divider {
      background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.25), transparent);
    }