/* roulang page: index */
:root {
      --brand-navy: #0F172A;
      --brand-teal: #0D9488;
      --brand-teal-hover: #0F766E;
      --brand-blue: #0284C7;
      --bg-surface: #F8FAFC;
      --border-color: #E2E8F0;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-surface);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    .custom-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .soft-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .soft-card:hover {
      box-shadow: 0 12px 30px -4px rgba(15, 23, 42, 0.08);
      transform: translateY(-3px);
      border-color: #CBD5E1;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .accordion-content.active {
      max-height: 240px;
    }