.sec-news__detail .wrapper {
  max-width: 900px;
}

.news-detail {
  margin-bottom: 100px;
}

.news-detail__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--color-sub);
  line-height: 1.2;
  margin-bottom: 12px;
}

.news-detail__date {
  font-size: 14px;
}

.news-detail__category {
  padding: 4px 12px;
  border: 1px solid var(--color-brown);
  border-radius: 100px;
  font-size: 12px;
}

.news-detail__title {
  font-size: 24px;
  font-weight: 500;
  padding-bottom: 32px;
  margin-bottom: 48px;
  border-bottom: solid 1px var(--color-sky);
}

.news-blocks,
.news-block + .news-block,
.news-block__text + .news-block__img {
  margin-top: 56px;
}

.news-block__text {
  font-size: 15px;
  font-weight: 300;
}

@media (max-width: 896px) {
  .news-detail {
    margin-bottom: 80px;
  }

  .news-detail__meta {
    gap: 12px;
    margin-bottom: 8px;
  }

  .news-detail__date {
    font-size: 13px;
  }

  .news-detail__category {
    padding: 4px 12px;
  }

  .news-detail__title {
    font-size: 24px;
    padding-bottom: 20px;
    margin-bottom: 40px;
  }

  .news-blocks,
  .news-block + .news-block,
  .news-block__text + .news-block__img {
    margin-top: 40px;
  }
}

@media (max-width: 480px) {
  .news-detail {
    margin-bottom: 64px;
  }

  .news-detail__category {
    font-size: 11px;
  }

  .news-detail__title {
    font-size: 18px;
    padding-bottom: 16px;
    margin-bottom: 32px;
  }

  .news-blocks,
  .news-block + .news-block,
  .news-block__text + .news-block__img {
    margin-top: 32px;
  }
}

/* ---------- TOPへ戻るボタン ---------- */
.news-detail__back {
  text-align: center;
  padding-top: 40px;
  border-top: solid 1px var(--color-sky);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-br);
  text-decoration: none;
}

/* 矢印の丸い枠 */
.back-btn__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 32px;
  border: 1px solid var(--color-sky);
  border-radius: 999px;
  overflow: hidden; /* 枠の外に出た矢印を隠す */
}

/* 下線 */
.back-btn__text {
  position: relative;
  line-height: 1;
}

.back-btn__text::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s ease;
}

.back-btn:hover .back-btn__text::after,
.back-btn:focus-visible .back-btn__text::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* 矢印の窓：矢印1つ分の大きさ。はみ出した部分は見えない */
.back-btn__arrow {
  display: block;
  width: 13px;
  overflow: hidden;
}

/* 矢印を2つ横に並べるレール（窓の2倍の幅） */
.back-btn__arrow-track {
  display: flex;
  width: 200%;
}

.back-btn__arrow-track img {
  flex-shrink: 0;
  width: 50%;
}

/* ホバーしたとき：レールを矢印1つ分、左へ流す */
.back-btn:hover .back-btn__arrow-track,
.back-btn:focus-visible .back-btn__arrow-track {
  animation: mk-arrow 0.3s ease-out forwards;
}

@keyframes mk-arrow {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-btn:hover .back-btn__arrow-track,
  .back-btn:focus-visible .back-btn__arrow-track {
    animation: none;
  }
}

@media (max-width: 480px) {
  .news-detail__back {
    padding-top: 32px;
  }
}