/* roulang page: index */
:root {
      --bg-main: #070b14;
      --card-bg: rgba(15, 23, 42, 0.75);
      --card-border: rgba(56, 189, 248, 0.2);
      --primary-cyan: #0ea5e9;
      --accent-green: #10b981;
    }
    body {
      background-color: var(--bg-main);
      color: #f1f5f9;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--card-border);
      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
    }
    .glass-card:hover {
      border-color: rgba(56, 189, 248, 0.45);
      box-shadow: 0 12px 40px 0 rgba(14, 165, 233, 0.22);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #38bdf8 100%);
      box-shadow: 0 0 20px rgba(14, 165, 233, 0.4);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-glow:hover {
      box-shadow: 0 0 30px rgba(14, 165, 233, 0.7);
      transform: translateY(-2px);
    }
    .text-gradient {
      background: linear-gradient(135deg, #ffffff 20%, #38bdf8 70%, #0ea5e9 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .section-divider {
      background: radial-gradient(circle at center, rgba(14, 165, 233, 0.25) 0%, transparent 75%);
    }