.snake-board-wrap {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  border-radius: 18px;
  overflow: hidden;
  border: 3px solid var(--accent);
  box-shadow: var(--glow), inset 0 0 30px rgba(0,0,0,.5);
  background: var(--board-bg);
  touch-action: none;
  position: relative;
}
#snakeCanvas { width: 100%; height: 100%; display: block; }

.snake-hint {
  color: var(--text-muted);
  font-size: .82rem;
  text-align: center;
  font-weight: 600;
}