:root{--accent:#a29bfe;--accent-2:#6c5ce7}
.merge-board{display:grid;grid-template-columns:repeat(4,1fr);gap:.35rem;max-width:18rem;margin:0 auto;padding:.5rem;background:rgba(0,0,0,.35);border-radius:.5rem}
.merge-cell{aspect-ratio:1;border-radius:.35rem;background:rgba(255,255,255,.06);display:grid;place-items:center;font-weight:700;font-size:1rem}