/* roulang page: index */
:root {
      --primary: #0D47A1;
      --primary-dark: #0A3880;
      --secondary: #00A896;
      --accent: #0284C7;
      --dark: #0F172A;
      --text: #334155;
      --muted: #64748B;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --white: #FFFFFF;
      --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.08);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background-color: var(--white);
    }
    .card-shadow {
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .hero-banner-bg {
      background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(13, 71, 161, 0.82) 100%), url('/assets/images/6358c3ac11005eca.webp');
      background-size: cover;
      background-position: center;
    }
    .cta-bg {
      background-image: linear-gradient(135deg, rgba(13, 71, 161, 0.94) 0%, rgba(15, 23, 42, 0.96) 100%), url('/assets/images/4360f92d650af8c5.jpg');
      background-size: cover;
      background-position: center;
    }