/* Theme declarations remain cacheable but receive the same class map. */
:root {
  --page-background: #f8fafc;
  --surface: #fff;
  --text: #0f172a;
  --muted: #475569;
  --border: #dbe4ee;
  --hero-background: linear-gradient(135deg, #0f172a 0%, #172554 62%, #0c4a6e 100%);
  --accent-light: #7dd3fc;
  --cta: #0369a1;
  --cta-hover: #075985;
  --link: #0369a1;
  --focus: #0284c7;
  --shadow: 0 1.25rem 3.5rem rgb(15 23 42 / .12);
  --font-sans: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  /* 调整此处行数即可控制首屏标题和描述的显示长度。 */
  --hero-title-lines: 2;
  --hero-description-lines: 3;
}