/* star field layer (#153): fixed behind everything, never takes a click or any layout space.
   --starfield-opacity is the one dial for the whole layer, stars and planets together:
   1 is full strength, lower is fainter. */
:root { --starfield-opacity: 0.72; }
.starfield { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; opacity: var(--starfield-opacity); }
.has-starfield .band { background: rgba(20, 23, 28, 0.74); }