.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 700ms cubic-bezier(.2,.6,.2,1),
    transform 700ms cubic-bezier(.2,.6,.2,1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--slow { transition-duration: 900ms; }
.reveal--fast { transition-duration: 450ms; }

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