.puzzle-stage{width:min(100%,620px);margin:0 auto;padding:clamp(12px,3vw,24px);border-radius:22px;background:#182844;color:#fff;touch-action:manipulation}.puzzle-status{min-height:1.8em;margin:0 0 14px;text-align:center;font-weight:800}.match-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.match-card{aspect-ratio:1;border:0;border-radius:14px;background:#51698e;color:transparent;font-size:clamp(1.5rem,7vw,2.5rem);cursor:pointer}.match-card.is-open,.match-card.is-matched{background:#fff;color:#172033}.match-card.is-matched{background:#a6efcb}.maze-grid{display:grid;grid-template-columns:repeat(var(--maze-size),1fr);gap:2px;background:#0d1628}.maze-cell{aspect-ratio:1;background:#e4ebf6}.maze-cell.wall{background:#344967}.maze-cell.start{background:#7c6cff}.maze-cell.goal{background:#31ae70}.maze-cell.player{background:#ffbd59}.merge-board{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.merge-cell{display:grid;place-items:center;aspect-ratio:1;border-radius:10px;background:#425978;color:#fff;font-size:clamp(1rem,5vw,1.75rem);font-weight:900}.merge-cell[data-value="2"]{background:#6386c4}.merge-cell[data-value="4"]{background:#7665c7}.merge-cell[data-value="8"]{background:#d07a55}.merge-cell[data-value="16"]{background:#d75f86}.merge-cell[data-value="32"],.merge-cell[data-value="64"]{background:#d8455a}.puzzle-metrics{display:flex;justify-content:center;gap:20px;margin:0 0 12px;font-weight:800}@media(max-width:600px){.puzzle-stage{padding:12px}.match-grid{gap:7px}.merge-board{gap:6px}}
.maze-grid,.merge-board{touch-action:none}