:root{
  --bg:#f7f7fb;
  --text:#111827;
  --muted:#6b7280;
  --card:#ffffff;
  --border:#e5e7eb;
  --link:#2563eb;
  --linkHover:#1d4ed8;
  --btn:#111827;
  --btnText:#ffffff;
  --focus:rgba(37,99,235,.35);
}