/* roulang page: index */
:root {
      --color-primary: #059669;
      --color-primary-hover: #10b981;
      --color-accent: #f97316;
      --bg-slate: #020617;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-base: 0.75rem;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .custom-container {
      max-width: 80rem;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1rem;
      padding-right: 1rem;
    }
    @media (min-width: 640px) { .custom-container { padding-left: 1.5rem; padding-right: 1.5rem; } }
    @media (min-width: 1024px) { .custom-container { padding-left: 2rem; padding-right: 2rem; } }
    .bg-grid-pattern {
      background-size: 32px 32px;
      background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    }
    details > summary::-webkit-details-marker { display: none; }