.fade-up{
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out;
  will-change: opacity, transform;
}

/* Activated when visible */
.fade-up.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Optional stagger delays */
.fade-up[data-delay="1"]{ transition-delay: 0.12s; }
.fade-up[data-delay="2"]{ transition-delay: 0.24s; }
.fade-up[data-delay="3"]{ transition-delay: 0.36s; }
.fade-up[data-delay="4"]{ transition-delay: 0.48s; }