/* roulang page: index */
:root {
      --brand-dark: #121824;
      --brand-orange: #FF5500;
      --brand-orange-hover: #E04B00;
      --brand-green: #10B981;
      --brand-bg: #F7F9FB;
      --card-bg: #FFFFFF;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --border-color: #E5E7EB;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--brand-bg);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      -webkit-font-smoothing: antialiased;
    }
    .custom-container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-banner {
      background-image: linear-gradient(rgba(18, 24, 36, 0.78), rgba(18, 24, 36, 0.88)), url('/assets/images/035fdae1165399d4.webp');
      background-size: cover;
      background-position: center;
    }
    .section-dark {
      background-image: linear-gradient(rgba(18, 24, 36, 0.94), rgba(18, 24, 36, 0.96)), url('/assets/images/9bf02cfe520466e6.webp');
      background-size: cover;
      background-position: center;
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.12);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }