.cursor-glow {
  position: fixed;
  left: 0;
  top: 0;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transform: translate3d(-500px, -500px, 0);
  background:
    radial-gradient(circle at center,
      rgba(255,255,255,.26) 0%,
      rgba(255,255,255,.13) 24%,
      rgba(255,255,255,.055) 47%,
      transparent 72%);
  filter: blur(26px);
  mix-blend-mode: screen;
  transition: opacity .25s ease;
}

.snowfield {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.snow-speck {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255,255,255,.78);
  box-shadow: 0 0 10px rgba(255,255,255,.65);
  opacity: .55;
  animation: snow-drift var(--duration, 16s) linear infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes snow-drift {
  0% {
    transform: translate3d(0, -12vh, 0);
    opacity: 0;
  }
  12% { opacity: var(--opacity, .55); }
  100% {
    transform: translate3d(var(--drift, 22px), 112vh, 0);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce), (pointer: coarse) {
  .cursor-glow,
  .snowfield {
    display: none !important;
  }
}