/* Scroll-reveal: elements start invisible and slide up */
.fu {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fu.in { opacity: 1; transform: translateY(0); }

/* Stagger delays for child elements */
.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }

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