.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }

.hidden { display: none !important; }

/* Scroll-triggered animations */
.fade-in-target {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children in grids */
.features__grid .fade-in-visible:nth-child(3n+2) { transition-delay: 0.1s; }
.features__grid .fade-in-visible:nth-child(3n+3) { transition-delay: 0.2s; }