/* roulang page: index */
:root {
      --bg-main: #f8fafc;
      --text-dark: #0f172a;
      --text-muted: #64748b;
      --primary: #2563eb;
      --accent: #ea580c;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-dark);
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      overflow-x: hidden;
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 4px;
    }
    .hero-banner-bg {
      background-image: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.78)), url('/assets/images/f8f5bd97db86c854.webp');
      background-size: cover;
      background-position: center;
    }
    .dark-panel-bg {
      background-image: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.15) 0%, transparent 60%), linear-gradient(180deg, #0b0f19 0%, #111827 100%);
    }
    .spec-card:hover {
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }