.post-fv {
  background: #3a78b8;
  color: #fff;
  padding: 60px 0;
}

.post-fv-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  gap: 40px;
  align-items: center;
  padding: 0 20px;
}

.post-fv-text {
  flex: 1;
}

.post-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.post-category {
  border: 1px solid #fff;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 14px;
}

.post-date {
    font-size: 14px;
    display: flex;
    align-items: center;
}

.post-title {
  font-size: 28px;
  font-weight: normal;
  margin-bottom: 20px;
  line-height: 1.5;
  color: #fff; 
  }

.breadcrumb {
  font-size: 14px;
}

.breadcrumb a {
  color: #fff;
  text-decoration: none;
}

.post-fv-image img {
  max-width: 420px;
  border-radius: 12px;
}
.post-content-area {
  padding: 80px 20px 0;
  background: #fff;
}

.post-content-inner {
  max-width: 1100px;          /* 横幅を制限 */
  margin: 0 auto;            /* 中央寄せ */
  font-size: 18px;
  line-height: 2.2;
  color: #000;
}

.post-content-inner p {
  margin-bottom: 32px;       /* 段落間の余白 */
}
.post-divider {
  max-width: 1100px;
  margin: 80px auto 0;
  border: none;
  border-top: 1px solid #ccc;
}
ul, ol {
    margin: 0;
}

/* 投稿の中身 */
.post-content-area p{
  font-size: var(--font-size-normal);
  margin-bottom: 10px;
}
.post-content-area hr{
  margin-bottom: 10px;
}
.post-content-area h3{
  background: #3a78b8;
  color: #fff;
  font-weight: bold;
  padding: 15px 20px;
  position: relative;
  padding-left: 2.5em;
  line-height: 1.4;
  margin-top: 50px;
}
.post-content-area h3::before {
  content: "≫";
  position: absolute;
  left: 0.5em;
  top: 50%;
  transform: translateY(-50%);
  color: #fff; /* 黄色 */
  font-size: var(--font-size-big);
  font-weight: normal;
}
.post-content-area .single-btn {
    background: #3a78b8;
    padding: 10px 20px;
    color: #fff;
    font-size: var(--font-size-normal);
    border-radius: 5px;
}
/* strong だけに黄色マーカー（下線風） */
.post-content-area strong {
  background: linear-gradient(transparent 65%, #ffe66a 65%);
  padding: 0 0.15em;
}

/* ===============================
   投稿用 目次（TOC）
=============================== */
.post-toc {
  margin: 2em 0;
  padding: 1.5em;
  background-color: #f7f9fc;
  border: 2px solid #d9e4f5;
  border-radius: 8px;
}

.post-toc__title {
  margin: 0 0 10px;
  font-size: var(--font-size-big);
  font-weight: bold;
  color: #333;
  padding-left: 0;
  position: relative;
}

/* リスト */
.post-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-toc__list li {
  margin: 10px 0 0;
}

/* リンク */
.post-toc__list a {
  text-decoration: none;
  color: #3a78b8;
  position: relative;
  padding-left: 30px;
  font-size: var(--font-size-normal);
}

/* ▶ 矢印 */
.post-toc__list a::before {
  content: "↓";
  position: absolute;
  left: 0;
  top: 0;
  font-size: var(--font-size-normal);
  color: #fff;
  border-radius: 50rem;
  background-color: #3a78b8;
  width: 20px;
  height: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.post-toc__list a:hover {
  text-decoration: underline;
}

@media(max-width:500px){
  .post-fv-inner {
      flex-direction: column-reverse;
      gap: 20px;
}
.post-fv{
  padding: 30px 0;
}
.post-fv-image img{
  width: 100%;
}
.post-fv-text {
    margin-right: auto;
}
}