:root[data-theme=ghost],[data-theme-swatch=ghost]{color-scheme:dark;--bg:#070b0d;--bg-2:#0e1a1a;--card:#101c1b;--ink:#eafffb;--ink-2:#c9e2df;--ink-3:#7fb6b0;--accent:#8fd6cf;--accent-deep:#a9edf3;--line:rgba(150,225,210,.2);--line-strong:rgba(150,220,205,.38);--fn-t:#6bbf88;--fn-pd:#d0ad4a;--fn-d:#ef6a63;--fn-m:#8fa2cc;--key-natural:#545e63;--key-sharp:#05080a;--key-highlight:var(--accent);--key-hint:#f6c544;--key-correct:#7fd39c;--key-wrong:#ff9f96;--focus-ring:2px solid var(--accent-deep);--shadow-overlay:0 0 0 1px rgba(150,225,210,.2),0 34px 70px -26px rgba(0,0,0,.9);--radius:4px;--font-head:var(--font-source-serif),Georgia,serif;--font-body:var(--font-source-sans),system-ui,sans-serif}:root[data-theme=ghost] [data-surface=theory]{--surface-bg:#050809;--surface-card:#0e1a1a;--surface-rule:rgba(150,225,210,.16);--surface-rule-strong:rgba(150,220,205,.32);--surface-ink:#eafffb;--surface-ink-soft:#c9e2df;--surface-ink-faint:#7fb6b0;background-color:#050809}