/* roulang page: index */
:root {
      --primary: #0F766E;
      --primary-dark: #0d635c;
      --accent: #F59E0B;
      --slate-dark: #0F172A;
      --slate-bg: #F8FAFC;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--slate-bg);
      color: #334155;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
      transition: all 0.25s ease-out;
    }
    .custom-shadow:hover {
      box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
      transform: translateY(-4px);
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 118, 110, 0.82) 100%);
    }
    .tab-active {
      background-color: #0F766E;
      color: #FFFFFF;
    }