.sky-zone {
  position: fixed;
  inset: 0 0 auto;
  height: 13.5vh;
  height: 13.5dvh;
  overflow: visible;
  contain: layout style;
  pointer-events: none;
  isolation: isolate;
}

.sky-entity {
  position: absolute;
  left: 0;
  top: 0;
  will-change: transform, opacity;
  pointer-events: none;
}

.sky-subject {
  position: relative;
}

.sky-image {
  position: absolute;
  display: block;
  max-width: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* A 30%-opaque black overlay on image pixels; preserve the alpha silhouette. */
.sky-entity.is-planet .sky-image {
  filter: brightness(0.7);
}