:root{--bg:#e9ebef;--board:#f8fafc;--edge:#d3d9e2;--ink:#232833;--blue:#1c5fd0;--red:#d3384f;--green:#12924e;--accent:#1c5fd0;--text:#20242d;--muted:#5b6573;--panel:#fff;--hair:#e2e7ee;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--mono:ui-monospace,"Cascadia Code","SF Mono",Menlo,Consolas,monospace}@media (prefers-color-scheme:dark){:root{--bg:#0c1016;--board:#151a22;--edge:#262d38;--ink:#e7ecf3;--blue:#6ea8fe;--red:#ff8fa3;--green:#6fe0a0;--accent:#6ea8fe;--text:#e7ecf3;--muted:#8b97a8;--panel:#131820;--hair:#232b36}}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent)}button{font-family:var(--mono);cursor:pointer;border:0;border-radius:9px;transition:transform .1s ease,filter .1s ease}button:active{transform:translateY(1px)}button:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px}