:root{--font-sans:"Open+Sans",-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;--font-heading:var(--font-sans);--font-body:var(--font-sans);--background:#fff;--background-surface:#f7fafc;--text-primary:#171717;--text-secondary:#4a5568;--text-muted:#718096}@media (prefers-color-scheme:dark){:root{--background:#fff;--foreground:#171717}}body{font-family:var(--font-body)}