.lits-board{width:min(920px,100%);gap:0;background:#4b5563;border:3px solid #64748b;border-radius:14px;overflow:hidden;box-shadow:0 16px 40px rgba(0,0,0,.22)}
.lits-cell{min-width:0;aspect-ratio:1;border-style:solid;border-color:#475569;border-radius:0;background:#111827;padding:0;position:relative;cursor:pointer}
.lits-cell:hover{background:#1f2937}
.lits-cell.filled{background:linear-gradient(135deg,#f5f3ff,#c4b5fd);box-shadow:inset 0 0 0 1px #ddd6fe}
.lits-cell.crossed::after{content:'×';position:absolute;inset:0;display:grid;place-items:center;color:#64748b;font-size:clamp(.55rem,1.6vw,1rem);font-weight:900}
@media(max-width:700px){.lits-board{border-width:2px;border-radius:10px}.lits-cell{min-height:18px}}