[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--motion-deliberate) var(--ease-out), transform var(--motion-deliberate) var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
[data-reveal-group] > * {
  transition-delay: calc(var(--reveal-index, 0) * 70ms);
}

/* CSS-only fallback: works even if JS never loads or is blocked, and is
   the primary path (not just a fallback) whenever the user has asked for
   reduced motion. */
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn, .site-nav__links a::after, .faq-item summary::after {
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}