/* Ball Merge — game-specific */
.board-wrap { flex:1; display:flex; align-items:center; justify-content:center; }
#merge {
  width:auto; max-width:100%; max-height:68vh; height:auto; aspect-ratio:360/500; touch-action:none;
  background:linear-gradient(180deg,#fff7e6,#ffe9c7); border:5px solid var(--stroke); border-radius:18px; box-shadow:0 6px 0 var(--stroke);
}