soulmate-particle-trail {
  position: fixed;
  inset: 0;
  z-index: 900; /* Above the page; below the header (1000) and native dialogs. */
  display: block;
  overflow: hidden;
  pointer-events: none;
  contain: strict;
}

soulmate-particle-trail canvas {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  soulmate-particle-trail { display: none; }
}