:root{--bg:#f3f4f6;--fg:#111827;--desk:#fff;--border:#d1d5db;--accent:#2563eb;--ok:#16a34a;--warn:#d97706;--err:#dc2626}
@media (prefers-color-scheme:dark){:root{--bg:#111827;--fg:#f9fafb;--desk:#1f2937;--border:#374151}}