.pt-shell {
  position: relative;
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  aspect-ratio: 4 / 5;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #080d1c;
}
.pt-shell canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}