/* roulang page: index */
:root {
      --primary: #4338CA;
      --secondary: #2563EB;
      --accent-green: #10B981;
      --accent-cyan: #06B6D4;
      --dark-slate: #0F172A;
      --light-bg: #F8FAFC;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--light-bg);
      color: #334155;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .text-glow {
      text-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
    }
    .card-hover {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -6px rgba(37, 99, 235, 0.12);
    }
    .tabular-nums {
      font-variant-numeric: tabular-nums;
    }
    .custom-gradient-btn {
      background: linear-gradient(135deg, #2563EB 0%, #4338CA 100%);
    }
    .custom-gradient-btn:hover {
      background: linear-gradient(135deg, #1D4ED8 0%, #3730A3 100%);
    }