#stage {
  min-height: 280px;
}
#board {
  display: grid;
  gap:0;
  margin: 0 auto;
  width: min(100%, 320px);
}
#board .cell {
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0;
  cursor: pointer;
}
.bag {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.85rem;
}
.piece {
  border: 1px solid var(--line);
  background: var(--play-cell, #fff);
  border-radius: 6px;
  padding: 4px;
  cursor: pointer;
  min-width: 52px;
}
.piece.on {
  outline: 2px solid var(--accent, #0a7a6f);
}
.piece.used {
  opacity: 0.35;
  pointer-events: none;
}
.piece-grid {
  display: grid;
  gap: 2px;
}
.piece-grid span {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: #94a3b8;
}
.row-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-top: 0.7rem;
}