.t2048-board{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:10px;width:min(92vw,420px);aspect-ratio:1 / 1;margin:var(--sp-4) auto 0;padding:10px;border-radius:var(--r-lg);background:var(--t2048-board-bg, #bbada0);box-shadow:var(--sh-md)}.t2048-cell{display:flex;align-items:center;justify-content:center;border-radius:var(--r-md);background:#ffffff2e;font-weight:800;font-size:clamp(18px,6vw,34px);color:#fff;font-variant-numeric:tabular-nums;user-select:none;transition:background-color .12s ease,transform .08s ease}.t2048-hint{margin:var(--sp-4) auto 0;max-width:420px;text-align:center;font-size:13px;color:var(--c-text-muted)}.t2048-tile--2{background:#eee4da;color:#6b6256}.t2048-tile--4{background:#ede0c8;color:#6b6256}.t2048-tile--8{background:#f2b179;color:#fff}.t2048-tile--16{background:#f59563;color:#fff}.t2048-tile--32{background:#f67c5f;color:#fff}.t2048-tile--64{background:#f65e3b;color:#fff}.t2048-tile--128{background:#edcf72;color:#fff;font-size:clamp(16px,5vw,30px)}.t2048-tile--256{background:#edcc61;color:#fff;font-size:clamp(16px,5vw,30px)}.t2048-tile--512{background:#edc850;color:#fff;font-size:clamp(16px,5vw,30px)}.t2048-tile--1024{background:#edc53f;color:#fff;font-size:clamp(14px,4.4vw,26px)}.t2048-tile--2048{background:#edc22e;color:#fff;font-size:clamp(14px,4.4vw,26px)}.t2048-tile--super{background:#3c3a32;color:#fff;font-size:clamp(14px,4.4vw,26px)}