/* roulang page: index */
:root {
      --color-navy: #0F2942;
      --color-dark: #0B1E32;
      --color-gold: #C59A53;
      --color-gold-hover: #B08540;
      --color-slate: #334155;
      --color-muted: #64748B;
      --color-bg-light: #F8FAFC;
      --color-border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    body {
      background-color: #FFFFFF;
      color: var(--color-slate);
      line-height: 1.75;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 41, 66, 0.06);
    }
    .hover-lift {
      transition: transform 0.25s ease-in-out, box-shadow 0.25s ease-in-out;
    }
    .hover-lift:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -4px rgba(15, 41, 66, 0.12);
    }
    .accordion-content {
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    }