:root{--uk-bg:#fff;--uk-fg:#1b1b1f;--uk-muted:#6b6b76;--uk-surface:#f0f0f5;--uk-border:#d2d2dc;--uk-accent:#3b5bdb;--uk-on-accent:#fff;--uk-ok:#2b8a3e;--uk-bad:#c92a2a;--uk-warn:#e67700}@media (prefers-color-scheme:dark){:root{--uk-bg:#121216;--uk-fg:#ececf1;--uk-muted:#9a9aa8;--uk-surface:#23232b;--uk-border:#3a3a46;--uk-accent:#748ffc;--uk-on-accent:#121216;--uk-ok:#69db7c;--uk-bad:#ff8787;--uk-warn:#ffa94d}}.uk-keyboard,.uk-cloze,.uk-arrange{max-width:480px;color:var(--uk-fg);margin:0 auto}.uk-key-row{justify-content:center;gap:4px;margin-bottom:6px;display:flex}.uk-key{border:1px solid var(--uk-border);background:var(--uk-surface);min-width:30px;min-height:44px;color:var(--uk-fg);border-radius:6px;flex:1;font-size:18px}.uk-key-wide{flex:3}.uk-key-fn{flex:1.5}.uk-key-primary,.uk-btn-primary{background:var(--uk-accent);color:var(--uk-on-accent)}.uk-key:disabled,.uk-btn:disabled,.uk-card:disabled,.uk-chip:disabled,.uk-mic:disabled{opacity:.5}.uk-meaning{margin:8px 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