/* ga-v2 reveal · IntersectionObserver로 .rev-init → .rev-show
   상세페이지 6개 공용 스크립트 */
(function () {
  if (typeof window === 'undefined' || typeof document === 'undefined') return;
  var reduce = window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  var items = document.querySelectorAll('.ga-v2 .rev-init, .rules-wrap .rev-init');
  if (!items || !items.length) return;
  if (reduce || !('IntersectionObserver' in window)) {
    items.forEach(function (el) { el.classList.add('rev-show'); });
    return;
  }
  var io = new IntersectionObserver(function (entries) {
    entries.forEach(function (en) {
      if (en.isIntersecting) {
        en.target.classList.add('rev-show');
        io.unobserve(en.target);
      }
    });
  }, { threshold: 0.12, rootMargin: '0px 0px -10% 0px' });
  items.forEach(function (el) { io.observe(el); });
})();