/* Decorative viewport overlay: no layout space and no interception of links. */
.murmuration {
  position: fixed; inset: 0; width: 100%; height: 100dvh;
  margin: 0; padding: 0; overflow: hidden; z-index: 4;
  pointer-events: none;
}
/* Preserve desktop particle scale: narrower viewports crop the canvas. */
.murmuration canvas {
  display: block; position: absolute; left: 50%; top: 50%;
  width: max(100%, 1920px); height: max(100%, 1080px);
  max-width: none; transform: translate(-50%, -50%); pointer-events: none;
}