/* 初期状態: 非表示 & 下にずらす */
.c-postContent p,
.c-postContent h2,
.c-postContent h3,
.c-postContent ul li,
.c-postContent ol li,
.c-postContent .ark-block-heading__sub,
.c-postContent .ark-block-dl__dt {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* 可視化されたらフェードイン */
.c-postContent p.is-visible,
.c-postContent h2.is-visible,
.c-postContent h3.is-visible,
.c-postContent ul li.is-visible,
.c-postContent ol li.is-visible,
.c-postContent .ark-block-heading__sub.is-visible,
.c-postContent .ark-block-dl__dt.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 除外: h2.no_fadeinscroll は常に表示 */
.c-postContent h2.no_fadeinscroll {
  opacity: 1 !important;
  transform: none !important;
}