/* roulang page: index */
:root {
      --color-primary: #0D1117;
      --color-cyan: #0EA5E9;
      --color-border: rgba(226, 232, 240, 0.8);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      color: #1E293B;
      background-color: #FFFFFF;
      line-height: 1.65;
    }
    .custom-container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .hero-banner-bg {
      background-image: linear-gradient(to right, rgba(255, 255, 255, 0.96) 20%, rgba(248, 250, 252, 0.85) 60%, rgba(255, 255, 255, 0.95) 100%), url('/assets/images/af71d395e3ef1d14.webp');
      background-size: cover;
      background-position: center;
    }
    .dark-section-bg {
      background-image: linear-gradient(180deg, #0B0F19 0%, #111827 100%);
    }
    .card-hover {
      transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: #0EA5E9;
      box-shadow: 0 10px 25px -5px rgba(14, 165, 233, 0.1), 0 8px 10px -6px rgba(14, 165, 233, 0.1);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }