/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-hover: #0284C7;
      --accent: #F97316;
      --dark-slate: #0F172A;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      color: #334155;
      background-color: #FFFFFF;
    }
    .badge-tag {
      background: rgba(15, 76, 129, 0.08);
      color: #0F4C81;
      border: 1px solid rgba(15, 76, 129, 0.18);
    }
    .hover-card {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .hover-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      border-color: #CBD5E1;
    }
    .accordion-content {
      transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    }