#curtain {
  position: fixed;
  inset: 0;
  background: var(--col-ink);
  z-index: 9999;
  animation: curtainLift 1.1s var(--ease-in-out) 0.3s forwards;
}

@keyframes curtainLift {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-100%); }
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideLine {
  0%   { transform: translateX(-100%); }
  50%  { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px) scale(0.97);
  transition: opacity 0.65s var(--ease-out), transform 0.9s var(--ease-out);
  will-change: transform, opacity;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  will-change: auto;
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.26s; }
.reveal-delay-3 { transition-delay: 0.44s; }
.reveal-delay-4 { transition-delay: 0.62s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
    will-change: auto;
  }
}