/* roulang page: index */
:root {
      --color-brand: #1B4332;
      --color-brand-light: #2D6A4F;
      --color-sage: #74C69D;
      --color-amber: #D4A373;
      --color-dark: #0F1E19;
      --color-muted: #495E57;
      --color-bg-alt: #F4F7F5;
      --color-deep: #0D201A;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      color: var(--color-dark);
      line-height: 1.75;
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .custom-container {
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .text-balance-header {
      letter-spacing: -0.02em;
    }
    .trans-smooth {
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .interactive-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px -4px rgba(27, 67, 50, 0.1);
      border-color: rgba(116, 198, 157, 0.45);
    }
    details summary::-webkit-details-marker {
      display: none;
    }