.sh-stage {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  margin: 16px auto 0;
  background: #f5f1e8;
  border-radius: 14px;
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
}
.sh-stage svg {
  width: 100%;
  height: 100%;
  display: block;
  -webkit-user-select: none;
  user-select: none;
}
.sh-stage [data-stage] {
  transition: opacity 0.45s ease;
}