#intro {
  position: fixed;
  inset: 0;
  background: #05070c;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity .8s ease, transform .8s ease;
}

#intro.hide {
  opacity: 0;
  transform: scale(1.05);
  pointer-events: none;
}

.intro-logo {
  font-size: 3rem;
  letter-spacing: .4em;
  color: #00eaff;
  text-shadow: 0 0 20px rgba(0,234,255,.6);
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0%,100% { opacity: .6 }
  50% { opacity: 1 }
}