:root{--bg: #0d1117;--panel: #161d26;--ink: #e8eef5;--muted: #8fa3b8;--board-edge: rgba(56, 189, 248, .16);--cellbg: #1e2733;--accent: #38bdf8;--good: #4ade80;--bad: #f87171;--hintc: #fbbf24;--cell: 52px;--target: 44px;--wlab: 26px}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:radial-gradient(1100px 640px at 50% -8%,#16273a 0%,var(--bg) 60%);color:var(--ink);font:15px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:700px;margin:0 auto;padding:32px 20px 48px;text-align:center}h1{margin:0;font-size:34px;letter-spacing:.5px}h1 span{color:var(--accent);text-shadow:0 0 18px rgba(56,189,248,.45)}.sub{margin:6px auto 20px;max-width:580px;color:var(--muted)}.sub strong,.note strong{color:var(--ink)}#wrap{display:flex;justify-content:center}#board{display:grid;gap:5px;padding:14px;background:var(--panel);border:1px solid var(--board-edge);border-radius:14px;align-items:center;justify-items:center}.wlab{width:100%;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.badge{font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted)}.cell{width:var(--cell);height:var(--cell);border:1px solid rgba(143,163,184,.25);border-radius:9px;background:var(--cellbg);color:var(--muted);font-size:22px;line-height:1;cursor:pointer;transition:background .12s,box-shadow .12s,transform .05s}.cell:hover{box-shadow:inset 0 0 0 2px #38bdf859}.cell:active{transform:scale(.96)}.cell.filled{background:var(--accent);border-color:var(--accent);box-shadow:0 0 14px #38bdf859}.cell.crossed{color:#8fa3b8cc}.cell.hinted{box-shadow:0 0 0 3px var(--hintc),0 0 18px #fbbf2473}#board.won .cell.filled{background:var(--good);border-color:var(--good);box-shadow:0 0 14px #4ade8066}.target{width:100%;font-weight:700;font-size:17px;font-variant-numeric:tabular-nums;color:var(--ink)}.target.done{color:var(--good)}.target.broken{color:var(--bad)}.hud{min-height:26px;margin:14px 0 4px}#status{color:var(--muted)}#status.good{color:var(--good)}#status.bad{color:var(--bad)}#status.hint{color:var(--hintc)}.controls{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:center;margin-top:10px}.controls label{color:var(--muted);font-size:14px;display:flex;gap:6px;align-items:center}select,button{background:var(--panel);color:var(--ink);border:1px solid rgba(143,163,184,.35);border-radius:9px;padding:8px 16px;font-size:14px;cursor:pointer;transition:border-color .12s,box-shadow .12s}select:hover,button:hover{border-color:var(--accent);box-shadow:0 0 10px #38bdf840}.note{margin:34px auto 0;max-width:620px;text-align:left;color:var(--muted);font-size:14px;border-top:1px solid rgba(143,163,184,.18);padding-top:18px}@media (max-width: 560px){:root{--cell: 40px;--target: 34px;--wlab: 20px}}