/* roulang page: index */
:root {
      --primary: #1E3A8A;
      --accent: #2563EB;
      --highlight: #F59E0B;
      --bg-light: #F8FAFC;
      --navy: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      color: var(--text-body);
      background-color: var(--bg-light);
      line-height: 1.65;
    }
    .card-shadow {
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 24px -4px rgba(30, 58, 138, 0.09);
    }
    .progress-line::after {
      content: '';
      position: absolute;
      top: 24px;
      left: 50%;
      width: 100%;
      height: 2px;
      background: #CBD5E1;
      z-index: 0;
    }
    @media (max-width: 1023px) {
      .progress-line::after {
        display: none;
      }
    }