/* ページ全体 */
.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.8;
  color: #333;
}

/* ヘッダー */
.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #e0e0e0;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: #1a1a1a;
}

.page-updated {
  font-size: 0.9rem;
  color: #666;
  margin: 0;
}

/* セクション */
.page-section {
  margin-bottom: 2rem;
}

.section-heading {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 1.5rem 0 1rem 0;
  color: #2c3e50;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #eee;
}

.section-content {
  font-size: 1rem;
}

.section-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem 0;
  color: #34495e;
}

.section-content p {
  margin: 0.75rem 0;
}

.section-content ul,
.section-content ol {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
}

.section-content li {
  margin: 0.5rem 0;
}

.section-content a {
  color: #3498db;
  text-decoration: none;
}

.section-content a:hover {
  text-decoration: underline;
}

/* エラー */
.error {
  padding: 2rem;
  background: #fee;
  color: #c00;
  border-radius: 8px;
  text-align: center;
}

/* レスポンシブ */
@media (max-width: 600px) {
  .page-container {
      padding: 1rem;
  }
  .page-title {
      font-size: 1.5rem;
  }
  .section-heading {
      font-size: 1.2rem;
  }
}