html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #06090b;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

#stage {
  position: fixed;
  left: 50%;
  top: 50%;
  width: min(100vw, 100vh);
  height: min(100vw, 100vh);
  width: min(100vw, 100dvh);
  height: min(100vw, 100dvh);
  transform: translate(-50%, -50%);
  background: #06090b;
  touch-action: none;
  opacity: 0;
  transition: opacity 1.2s ease;
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 3%, #000 97%, transparent 100%),
    linear-gradient(to bottom, transparent 0, #000 3%, #000 97%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0, #000 3%, #000 97%, transparent 100%),
    linear-gradient(to bottom, transparent 0, #000 3%, #000 97%, transparent 100%);
  mask-composite: intersect;
}

#stage.ready {
  opacity: 1;
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  outline: none;
  cursor: grab;
}

body.dragging #scene {
  cursor: grabbing;
}