.single-margin {
  height: 70px;
  width: 100%;
}

.single-page {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 50px 0;
}

.single-page-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.single-page-header-category {
  display: flex;
  gap: 10px;
}

.single-page-header-category p {
  font-size: 1.2rem;
  font-weight: bold;
  background: #eee;
  border-radius: 5px;
  padding: 5px 10px;
}

.single-page-header-title {
  font-size: 2.5rem;
  font-weight: bold;
  width: 100%;
}

.single-page-header-tags {
  display: flex;
  gap: 10px;
}

.single-page-header-tags p {
  font-size: 1rem;
  background: #fff;
  padding: 5px 10px;
  border: 1px solid #777;
  color: #777;
}

.single-page-content {
  width: 90%;
  margin: 50px auto;
}

.single-page-article-footer {
  display: flex;
  justify-content: space-between;
}

.single-page-article-footer-links {
  display: flex;
  gap: 10px;
}


.single-page-related {
  margin-top: 50px;
}

/* 記事本文の見出し（h1 は本文内にあれば適用、ページタイトルとは別扱い） */
.single-page-content h1,
.single-page-content .wp-block-heading.is-style-h1 {
  font-size: 2.5rem;
  line-height: 1.35;
  font-weight: 700;
  margin: 5rem 0 2.5rem;
  color: #333;
}

.single-page-content h2,
.single-page-content .wp-block-heading:is(h2, .is-style-h2) {
  font-size: 1.8rem;
  line-height: 1.4;
  font-weight: 700;
  margin: 3.5rem 0 1.8rem;
  border-left: 6px solid #777;
  padding-left: 20px;
  color: #333;
}

.single-page-content h3,
.single-page-content .wp-block-heading:is(h3, .is-style-h3) {
  font-size: 1.6rem;
  line-height: 1.45;
  font-weight: 700;
  margin: 3rem 0 1.6rem;
  padding-bottom: 5px;
  color: #555;
}

.single-page-content h4,
.single-page-content .wp-block-heading:is(h4, .is-style-h4) {
  font-size: 1.4rem;
  line-height: 1.5;
  font-weight: 600;
  margin: 2.5rem 0 1.4rem;
  color: #555;
}

/* 記事先頭の見出しは上マージンを詰める */
.single-page-content > :first-child:is(h1, h2, h3, h4, .wp-block-heading) {
  margin-top: 0;
}

/* アンカーリンクで飛んだときに固定ヘッダーと重ならないように */
.single-page-content h1,
.single-page-content h2,
.single-page-content h3,
.single-page-content h4 {
  scroll-margin-top: 80px; /* ヘッダー高さに合わせて調整 */
}

.single-page-content p {
  color: #555;
  line-height: 1.8;
  font-size: 1rem;
}

/* inside にしたい場合の例 */
.single-page-content ul,
.single-page-content ol {
  list-style-position: inside;
  padding-left: 0; /* inside のときは余白を詰めると揃いやすい */
  color: #555;
  line-height: 2.0;
  font-size: 1rem;
  margin: 2rem 0 1rem;
  font-weight: bold;
}

/* スマホ対応のメディアクエリ */
@media (max-width: 768px) {
  .single-margin {
    height: 60px;
  }
  
  .single-page {
    width: 95%;
    padding: 30px 0;
  }
  
  .single-page-header {
    gap: 15px;
    margin-bottom: 20px;
  }
  
  .single-page-header-category {
    flex-wrap: wrap;
    gap: 8px;
  }
  
  .single-page-header-category p {
    font-size: 1rem;
    padding: 6px 12px;
  }
  
  .single-page-header-title {
    font-size: 1.8rem;
    line-height: 1.3;
  }
  
  .single-page-header-tags {
    flex-wrap: wrap;
    gap: 8px;
  }
  
  .single-page-header-tags p {
    font-size: 0.9rem;
    padding: 6px 12px;
  }
  
  .single-page-content {
    width: 95%;
    margin: 30px auto;
  }
  
  .single-page-content h1,
  .single-page-content .wp-block-heading.is-style-h1 {
    font-size: 1.8rem;
    line-height: 1.3;
    margin: 3rem 0 1.5rem;
  }
  
  .single-page-content h2,
  .single-page-content .wp-block-heading:is(h2, .is-style-h2) {
    font-size: 1.4rem;
    line-height: 1.3;
    margin: 2.5rem 0 1.2rem;
    border-left: 4px solid #777;
    padding-left: 15px;
  }
  
  .single-page-content h3,
  .single-page-content .wp-block-heading:is(h3, .is-style-h3) {
    font-size: 1.2rem;
    line-height: 1.3;
    margin: 2rem 0 1rem;
    padding-bottom: 3px;
  }
  
  .single-page-content h4,
  .single-page-content .wp-block-heading:is(h4, .is-style-h4) {
    font-size: 1.1rem;
    line-height: 1.3;
    margin: 1.8rem 0 0.8rem;
  }
  
  .single-page-content h1,
  .single-page-content h2,
  .single-page-content h3,
  .single-page-content h4 {
    scroll-margin-top: 60px;
  }
  
  .single-page-content p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 1.5rem 0;
  }
  
  .single-page-content ul,
  .single-page-content ol {
    font-size: 0.9rem;
    line-height: 1.8;
    margin: 1.5rem 0;
    padding-left: 20px;
  }
  
  .single-page-article-footer {
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
  }
  
  .single-page-article-footer-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
  }
  
  .single-page-related {
    margin-top: 30px;
  }
}

/* タブレット対応 */
@media (min-width: 769px) and (max-width: 1024px) {
  .single-page {
    width: 90%;
    padding: 40px 0;
  }
  
  .single-page-header-title {
    font-size: 2.2rem;
  }
  
  .single-page-content {
    width: 90%;
    margin: 40px auto;
  }
  
  .single-page-content h1,
  .single-page-content .wp-block-heading.is-style-h1 {
    font-size: 2.2rem;
  }
  
  .single-page-content h2,
  .single-page-content .wp-block-heading:is(h2, .is-style-h2) {
    font-size: 1.6rem;
  }
  
  .single-page-content h3,
  .single-page-content .wp-block-heading:is(h3, .is-style-h3) {
    font-size: 1.4rem;
  }
  
  .single-page-content h4,
  .single-page-content .wp-block-heading:is(h4, .is-style-h4) {
    font-size: 1.2rem;
  }
  
  .single-page-content p {
    font-size: 0.95rem;
  }
  
  .single-page-content ul,
  .single-page-content ol {
    font-size: 0.95rem;
  }
}