/* 記事共通スタイル */
:root {
  --color-primary: #2c5f2d;
  --color-accent: #97bc62;
  --color-text: #333;
  --color-text-light: #666;
  --color-bg: #fafaf7;
  --color-white: #fff;
  --color-border: #e0ddd5;
  --color-rinzai: #185FA5;
  --color-soto: #0F6E56;
  --color-obaku: #BA7517;
  --max-width: 800px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ヘッダー */
.site-header {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.site-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header a {
  color: #fff;
  text-decoration: none;
}
.site-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.site-nav a {
  font-size: 14px;
  margin-left: 20px;
  opacity: 0.9;
  transition: opacity 0.2s;
}
.site-nav a:hover { opacity: 1; }

/* パンくずリスト */
.breadcrumb {
  max-width: var(--max-width);
  margin: 16px auto 0;
  padding: 0 20px;
  font-size: 13px;
  color: var(--color-text-light);
}
.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

/* 記事本文 */
.article-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 60px;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--color-border);
}
.article-category {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 3px;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.article-title {
  font-size: 26px;
  line-height: 1.5;
  font-weight: 800;
  color: #1a1a1a;
  margin-bottom: 12px;
}
.article-meta {
  font-size: 13px;
  color: var(--color-text-light);
}
.article-lead {
  font-size: 16px;
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 32px;
  padding: 16px 20px;
  border-left: 4px solid var(--color-accent);
  background: #f5f5ef;
}

/* 見出し */
.article-body h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 48px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}
.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: #2a2a2a;
  margin: 32px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
}

/* 段落・リスト */
.article-body p {
  margin-bottom: 20px;
}
.article-body ul, .article-body ol {
  margin: 16px 0 20px 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body strong {
  color: #1a1a1a;
}

/* テーブル */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 14px;
}
.article-body th, .article-body td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
}
.article-body th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}
.article-body tr:nth-child(even) {
  background: #f5f5ef;
}

/* 引用 */
.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 14px 20px;
  margin: 20px 0;
  background: #f5f5ef;
  font-style: italic;
  color: var(--color-text-light);
}

/* 区切り線 */
.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 40px 0;
}

/* CTA */
.cta-box {
  background: linear-gradient(135deg, var(--color-primary), #3a7a3d);
  color: #fff;
  padding: 28px 24px;
  border-radius: 10px;
  text-align: center;
  margin: 40px 0;
}
.cta-box h3 {
  border: none;
  padding: 0;
  color: #fff;
  font-size: 20px;
  margin: 0 0 10px;
}
.cta-box p {
  margin-bottom: 16px;
  opacity: 0.95;
}
.cta-btn {
  display: inline-block;
  background: #fff;
  color: var(--color-primary);
  font-weight: 700;
  padding: 12px 32px;
  border-radius: 30px;
  text-decoration: none;
  font-size: 15px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* あわせて読みたい */
.related-articles {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px solid var(--color-border);
}
.related-articles h2 {
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 16px;
  border-bottom: none;
}
.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.related-list li {
  margin-bottom: 0;
}
.related-list a {
  display: block;
  padding: 14px 16px;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  font-weight: 500;
  transition: background 0.2s;
}
.related-list a:hover {
  background: #f0ede5;
}
.related-list a::before {
  content: '▸ ';
  color: var(--color-accent);
}

/* 参考文献 */
.references {
  margin-top: 32px;
  padding: 20px;
  background: #f5f5ef;
  border-radius: 8px;
  font-size: 14px;
}
.references h3 {
  font-size: 16px;
  margin: 0 0 12px;
  border-left: none;
  padding-left: 0;
}
.references ul {
  margin: 0;
  padding-left: 20px;
}
.references li {
  margin-bottom: 6px;
  color: var(--color-text-light);
}
.references a {
  color: var(--color-primary);
}

/* 注記 */
.article-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 24px;
  font-style: italic;
}

/* フッター */
.site-footer {
  background: #2a2a2a;
  color: #aaa;
  text-align: center;
  padding: 24px 20px;
  font-size: 13px;
}
.site-footer a {
  color: #ccc;
  text-decoration: none;
}

/* 記事一覧 */
.article-list {
  list-style: none;
  padding: 0;
}
.article-card {
  background: var(--color-white);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s, box-shadow 0.2s;
}
.article-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.article-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}
.article-card-category {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 3px;
  margin-bottom: 8px;
}
.article-card h2 {
  font-size: 19px;
  color: #1a1a1a;
  margin-bottom: 8px;
  line-height: 1.5;
}
.article-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* レスポンシブ */
@media (max-width: 600px) {
  .article-title { font-size: 21px; }
  .article-body h2 { font-size: 19px; }
  .article-body h3 { font-size: 16px; }
  .site-nav a { margin-left: 12px; font-size: 13px; }
  .site-title { font-size: 16px; }
}