/* roulang page: index */
:root {
      --primary: #1E40AF;
      --secondary: #0284C7;
      --bg-base: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    body {
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .anchor-offset {
      scroll-margin-top: 115px;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
    }
    .custom-shadow-lg {
      box-shadow: 0 10px 25px -3px rgba(15, 23, 42, 0.08);
    }