body{isolation:isolate}

.cursor-glow{
  position:fixed;left:0;top:0;z-index:-1;
  width:400px;aspect-ratio:1;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,
    rgba(91,160,211,.14) 0%,
    rgba(121,180,221,.08) 32%,
    rgba(91,160,211,.03) 52%,
    transparent 70%);
  opacity:0;will-change:transform;
  transition:opacity 280ms ease-out;
}

.cursor-glow.is-visible{opacity:1}

@media (prefers-reduced-motion:reduce){
  .cursor-glow{display:none}
}