/* roulang page: index */
:root {
      --primary: #10b981;
      --primary-dark: #059669;
      --metal-dark: #0f172a;
      --metal-card: #1e293b;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
    }
    body {
      font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: #ffffff;
      color: #0f172a;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #cbd5e1;
      border-radius: 4px;
    }
    .hero-overlay {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.82) 50%, rgba(5, 150, 105, 0.75) 100%);
    }
    .glow-subtle {
      box-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.15), 0 8px 10px -6px rgba(16, 185, 129, 0.1);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }