#gomoku-canvas {
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 1 / 1;
  display: block;
  margin: 12px auto 0;
  background: #e3b873;
  cursor: pointer;
}

.gomoku-controls {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 12px;
}