.container {
  display: flex;
  min-height: 100vh;
}

/* --- サイドバー全体 --- */
.sidebar {
  width: 260px;
  background: #f5f5f5;
  padding: 20px;
  border-right: 1px solid #ccc;
  overflow-y: auto;
}

.sidebar h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

/* --- 階層構造 --- */
.category-list,
.category-list ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

/* 大カテゴリ */
.category-list > li {
  margin-bottom: 16px;
}

.category-list > li > strong {
  display: block;
  font-size: 16px;
  color: #222;
  margin-bottom: 6px;
  border-left: 4px solid #0078ff;
  padding-left: 8px;
}

/* 中カテゴリ */
.category-list > li ul > li > strong {
  display: block;
  font-size: 14px;
  color: #333;
  margin-top: 6px;
  margin-bottom: 4px;
  padding-left: 14px;
  border-left: 3px solid #90caf9;
}

/* 小カテゴリ（実際にクリックできる部分） */
.category-list a {
  text-decoration: none;
  color: #444;
  display: block;
  padding: 3px 0 3px 30px;
  transition: all 0.2s ease;
}

.category-list a:hover {
  color: #0078ff;
  text-decoration: underline;
  background-color: #eaf4ff;
  border-radius: 4px;
}

/* --- メインコンテンツ --- */
.content {
  flex: 1;
  padding: 30px 40px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

th, td {
  border: 1px solid #ddd;
  padding: 8px;
}

th {
  background-color: #f9f9f9;
}

.unit {
  color: green;
  font-weight: bold;
}

td:first-child {
  text-align: center;
  vertical-align: middle;
}

img:hover {
  transform: scale(1.1);
  transition: 0.2s;
}


.seo-subtitle {
    color: #666;
    font-weight: 500;
}
.seo-text .seo-desc {
    margin-top: 4px;
    margin-bottom: 4px;
    line-height: 1.4;
    /* color: #555; */
}