/* roulang page: index */
:root {
      --primary: #0f52ba;
      --primary-hover: #1d4ed8;
      --secondary: #10b981;
      --bg-light: #f8fafc;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius: 1rem;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(15, 82, 186, 0.04);
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }
    .custom-card-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-shadow:hover {
      box-shadow: 0 20px 25px -5px rgba(15, 82, 186, 0.1), 0 8px 10px -6px rgba(15, 82, 186, 0.05);
      transform: translateY(-4px);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .accordion-open .accordion-content {
      max-height: 280px;
    }
    .accordion-open .accordion-icon {
      transform: rotate(180deg);
    }