:root{--bg: #151412;--panel: #1f1d1a;--panel-2: #2a2723;--ink: #efe9df;--dim: #a39a8c;--line: #3b3630;--v: #5cc8d6;--h: #e8a15a;--gold: #f3d49b;--good: #7ddf9a;--bad: #ef6b7b}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink)}body{font:15px/1.6 ui-sans-serif,system-ui,-apple-system,Segoe UI,Hiragino Sans,sans-serif}main{max-width:1180px;margin:0 auto;padding:32px 24px 48px}h1{font-size:34px;margin:0 0 8px;letter-spacing:-.01em}h1 span{color:var(--h);font-weight:600;margin-left:6px}.sub{color:var(--dim);max-width:78ch;margin:0 0 24px}.sub strong{color:var(--ink);font-weight:600}strong.v{color:var(--v)}strong.h{color:var(--h)}.win-t{color:var(--good)}.lose-t{color:var(--bad)}#wrap{display:flex;gap:28px;align-items:flex-start;flex-wrap:wrap}.stage{flex:1 1 460px;min-width:0}.side{flex:0 1 470px;min-width:300px}h3{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--dim);font-weight:600;margin:0 0 10px}.controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}.sel{color:var(--dim);font-size:13px;display:inline-flex;gap:6px;align-items:center}.chk{cursor:pointer}select,button{font:inherit;font-size:13px;color:var(--ink);background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:5px 10px;cursor:pointer}button:hover,select:hover{border-color:var(--dim)}button.primary{background:var(--h);color:#1a120a;border-color:var(--h);font-weight:600}#boardwrap{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px;max-width:490px}#board{width:100%;height:auto;display:block;-webkit-user-select:none;user-select:none;max-height:70vh}#board .frame{fill:#0e0d0c;stroke:#4a4238;stroke-width:2}#board .cell{fill:#2b2824}#board .domino{stroke:#00000080;stroke-width:2}#board .domino.v{fill:var(--v)}#board .domino.h{fill:var(--h)}#board .domino.last{stroke:#fff;stroke-width:3}#board .ghost{fill:none;stroke-width:3;stroke-dasharray:7 5;pointer-events:none}#board .ghost.v{stroke:var(--v)}#board .ghost.h{stroke:var(--h)}#board .mark{stroke:#0e0d0c;stroke-width:2.5;pointer-events:none}#board .mark.win{fill:var(--good)}#board .mark.lose{fill:var(--bad)}#board .mark.unk{fill:#6d655a}#status{min-height:26px;margin-top:10px;color:var(--dim)}#status.good{color:var(--good)}#status.bad{color:var(--bad)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:18px}.panel dl{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;margin:0 0 10px}.panel dt{color:var(--dim);font-size:13px}.panel dd{margin:0;font-variant-numeric:tabular-nums}.fine{color:var(--dim);font-size:12.5px;margin:8px 0 0}table.bound{border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums}table.bound th{color:var(--dim);font-weight:500;padding:2px 12px 2px 0;text-align:left}table.bound td{padding:2px 12px 2px 0}table.chart{border-collapse:separate;border-spacing:2px;font-size:11px;font-variant-numeric:tabular-nums}table.chart th{color:var(--dim);font-weight:500;width:22px}table.chart td{width:22px;height:20px;text-align:center;border-radius:4px;color:#14110d;font-weight:700}table.chart td.oV{background:var(--v)}table.chart td.oH{background:var(--h)}table.chart td.o1{background:var(--gold)}table.chart td.o2{background:#8d857a}table.chart td.open{background:var(--panel-2);color:var(--dim)}table.chart td.out{background:transparent}table.chart td.pick{cursor:pointer}table.chart td.here{outline:2px solid #fff}.notes{max-width:78ch;margin-top:36px;color:var(--dim)}.notes h2{color:var(--ink);font-size:19px;margin:26px 0 8px}.notes strong{color:var(--ink)}footer{margin-top:40px;color:var(--dim);font-size:13px}footer a,.notes a{color:var(--v)}