/* roulang page: index */
:root {
      --primary-color: #1E40AF;
      --secondary-color: #0EA5E9;
      --bg-surface: #F8FAFC;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-default: 0.75rem;
      --shadow-default: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-surface);
      color: var(--text-body);
      overflow-x: hidden;
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    .custom-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-banner {
      background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.85)), url('/assets/images/8e362de582f09a2a.jpg');
      background-size: cover;
      background-position: center;
    }
    .card-hover {
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover: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);
    }
    details summary::-webkit-details-marker {
      display: none;
    }