:root[data-theme=night]{--bg:#1c1917;--bg-2:#252220;--card:#2d2926;--ink:#ede8df;--ink-2:#9a9389;--accent:#b71c1c;--accent-deep:#d32f2f;--line:#3d3733;--key-natural:#ede8df;--key-sharp:#1c1917;--key-highlight:var(--accent);--key-hint:#f6c544;--key-correct:#388e3c;--key-wrong:#c62828;--focus-ring:2px solid var(--accent);--shadow-overlay:0 8px 28px rgba(0,0,0,.45);--radius:4px;--font-head:var(--font-source-serif),Georgia,serif;--font-body:var(--font-source-sans),system-ui,sans-serif}