:root{color-scheme:light;--bg: #ffffff;--fg: #383a42;--muted: #a0a1a7;--status: #696c77;--hover: #e5e5e6;--border: #d4d4d4;--border-hover: #a0a1a7;--btn-hover-bg: #f5f5f5}:root[data-theme=dark]{color-scheme:dark;--bg: #1e1e1e;--fg: #d4d4d4;--muted: #808080;--status: #9d9d9d;--hover: #2a2d2e;--border: #3c3c3c;--border-hover: #6e6e6e;--btn-hover-bg: #2a2a2a}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;justify-content:center;align-items:center;background:var(--bg);color:var(--fg);font-family:Menlo,Consolas,SF Mono,monospace;font-size:14px;font-weight:400}.wrap{display:flex;flex-direction:column;align-items:center;text-align:center}.title{color:var(--muted);margin-bottom:.75rem}.status{min-height:1.4em;margin-bottom:1rem;color:var(--status)}.board{display:inline-block;font-size:1em;font-family:inherit;font-weight:inherit;line-height:1.2;white-space:pre;margin:1.5rem 0 2rem;text-align:center}.cell{cursor:pointer;display:inline-block;width:5ch;text-align:center}.cell.hover{background:var(--hover)}button{font-family:inherit;font-size:1em;font-weight:inherit;background:transparent;color:var(--fg);border:1px solid var(--border);padding:.4rem 1rem;cursor:pointer}button:hover{border-color:var(--border-hover);background:var(--btn-hover-bg)}.source{color:var(--fg);text-decoration:underline}.links{display:flex;align-items:baseline;gap:.5rem;margin-top:1rem}.theme-label{color:var(--fg)}.sep{color:var(--muted)}.theme-toggle{display:inline;vertical-align:baseline;color:var(--fg);text-decoration:underline;cursor:pointer;background:none;border:none;padding:0;font:inherit}