.tech-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2em 1em;
}

/* パンくず */
.breadcrumb {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 1em;
}
.breadcrumb a {
  color: #0073aa;
  text-decoration: none;
}
.breadcrumb a:hover {
  text-decoration: underline;
}

/* タイトル */
.article-title {
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 0.2em;
}

/* メタ情報 */
.article-meta {
  font-size: 0.9em;
  color: #999;
  margin-bottom: 2em;
}

/* 本文 */
.article-content h2 {
  border-bottom: 2px solid #eee;
  padding-bottom: 0.3em;
  margin-top: 2em;
}
.article-content h3 {
  border-left: 4px solid #ccc;
  padding-left: 0.6em;
  margin-top: 1.5em;
}
.article-content pre {
  background: #f7f7f7;
  padding: 1em;
  border-radius: 6px;
  overflow-x: auto;
}
.article-content img {
  max-width: 100%;
  border-radius: 4px;
  margin: 1em 0;
}

/* 関連記事 */
.related-posts h2 {
  font-size: 1.2em;
  margin-top: 2.5em;
  border-bottom: 2px solid #ddd;
}
.related-posts ul {
  list-style: none;
  padding-left: 0;
}
.related-posts li {
  margin: 0.5em 0;
}
.related-posts a {
  color: #0073aa;
}

/* 著者ボックス */
.author-box {
  display: flex;
  align-items: center;
  margin-top: 3em;
  padding: 1em;
  border: 1px solid #eee;
  border-radius: 8px;
  background: #fafafa;
}
.author-icon {
  border-radius: 50%;
  margin-right: 1em;
}