/* roulang page: index */
:root {
      --bg-dark: #0B0F19;
      --bg-card: #111827;
      --primary: #10B981;
      --secondary: #06B6D4;
      --accent: #F59E0B;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --border-light: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
    }
    *, *::before, *::after {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: #1F2937;
      background-color: #F8FAFC;
      -webkit-font-smoothing: antialiased;
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.94) 0%, rgba(17, 24, 39, 0.88) 100%), url('/assets/images/ab42cb08d89e7328.webp') center/cover no-repeat;
    }
    .banner-dark-bg {
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%), url('/assets/images/d7c10b4d024c0be1.webp') center/cover no-repeat;
    }
    .cta-bg {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.96) 0%, rgba(11, 15, 25, 0.98) 100%), url('/assets/images/1fa004380f89b59b.webp') center/cover no-repeat;
    }
    .btn-gradient {
      background: linear-gradient(90deg, #10B981 0%, #06B6D4 100%);
      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px -4px rgba(16, 185, 129, 0.4);
    }
    .card-hover {
      transition: all 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.08);
    }
    .tab-active {
      background-color: #10B981;
      color: #FFFFFF;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }