#bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) brightness(.75);
}

.shade {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, .15) 0%, rgba(0, 0, 0, .65) 75%);
}

#snow {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

#enter {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: rgba(5, 5, 6, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
  transition: opacity .8s ease;
}

#enter span {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: .08em;
  color: #ddd;
  animation: pulse 2.2s ease-in-out infinite;
}

#enter.gone {
  opacity: 0;
  pointer-events: none;
}

@keyframes pulse {
  50% { opacity: .35; }
}

@media (prefers-reduced-motion: reduce) {
  #snow { display: none; }
}