/* ============================================================
   blog-article.css — ブログ記事ページ専用（新シェル用・2026-07-26）
   旧styles.cssの記事関連ルールを新デザイントークンへ移植したもの。
   前提: /assets/shell-*.css（トークン・site-header・drawer）と併読。
   ドロップシャドウ不使用・絵文字不使用。
   ============================================================ */

.page { display: block; }

/* 記事レイアウト（fixedヘッダーぶん上に余白を取る） */
.blog-post {
  padding: clamp(108px, 14vw, 150px) 0 clamp(80px, 12vw, 140px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-jp);
}
.blog-post__shell {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 0 20px;
}
.blog-post__header {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.blog-post__kicker {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.blog-post__title {
  margin-top: 16px;
  font-size: clamp(20px, 2.85vw, 28px);
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-align: left;
}
.blog-post__meta {
  margin-top: 12px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.blog-post__hero { margin: clamp(28px, 4vw, 40px) 0 0; }
.blog-post__hero img { width: 100%; height: auto; display: block; border-radius: 6px; }

/* 本文 */
.blog-post__content {
  margin-top: clamp(28px, 4vw, 44px);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.95;
  letter-spacing: 0.04em;
  text-align: left;
}
.blog-post__content > *:first-child { margin-top: 0; }

/* 目次 */
.blog-post__toc {
  margin: clamp(28px, 4vw, 44px) 0;
  padding: clamp(20px, 3vw, 28px) clamp(20px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink);
  border-radius: 4px;
}
.blog-post__toc-label {
  margin: 0 0 12px;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--muted);
}
.blog-post__toc-list { margin: 0 !important; padding-left: 1.4em !important; list-style: decimal; }
.blog-post__toc-list li { margin: 0.5em 0 !important; font-size: clamp(14px, 1.3vw, 15px); line-height: 1.6; }
.blog-post__toc-list a { color: inherit; text-decoration: none; }
.blog-post__toc-list a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* セクション図解（インラインSVG） */
.blog-post__diagram {
  margin: clamp(20px, 3vw, 32px) 0 clamp(24px, 3vw, 36px) !important;
  padding: clamp(20px, 3vw, 32px) clamp(16px, 2vw, 28px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.blog-post__diagram svg { display: block; width: 100%; max-width: 100%; height: auto; }
.blog-post__diagram figcaption {
  margin-top: 14px;
  padding: 0 8px;
  font-size: clamp(12px, 1.1vw, 13px);
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

/* アンカーが固定ヘッダーにもぐらないように */
.wp-import h2[id], .wp-import h3[id] { scroll-margin-top: 96px; }

.blog-post__source {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.blog-post__source a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.blog-post__source a:hover { opacity: 0.75; }

/* 本文の標準要素 */
.wp-import p { margin: 0 0 1.25em; }
.wp-import h2, .wp-import h3 {
  margin: 1.6em 0 0.85em;
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.wp-import h3 { font-size: clamp(17px, 1.7vw, 19px); margin-top: 1.4em; }
.wp-import h2:first-child, .wp-import h3:first-child { margin-top: 0; }
.wp-import ul, .wp-import ol { margin: 0 0 1.25em; padding-left: 1.35em; }
.wp-import li { margin: 0.35em 0; }
.wp-import figure { margin: clamp(24px, 4vw, 40px) 0; }
.wp-import figure img { width: 100%; height: auto; display: block; }
.wp-import a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.wp-import a:hover { opacity: 0.75; }
.blog-post__content.wp-import .has-text-align-center,
.blog-post__content.wp-import .has-text-align-right { text-align: left !important; }
.blog-post__content.wp-import .wp-block-columns {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: clamp(16px, 3vw, 32px);
  margin: 1.25em 0;
  align-items: start;
}
.blog-post__content.wp-import .wp-block-column { min-width: 0; }
.blog-post__content.wp-import figure.wp-block-table {
  width: 100%; max-width: 100%; margin-left: 0; margin-right: 0;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.blog-post__content.wp-import .wp-block-table table { width: 100%; border-collapse: collapse; text-align: left; }
.blog-post__content.wp-import .wp-block-table th,
.blog-post__content.wp-import .wp-block-table td {
  text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--line); padding: 10px 12px;
}

/* 一覧へ戻る */
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: clamp(40px, 5vw, 72px);
  font-family: var(--font-en);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  position: relative;
  padding: 4px 0;
  color: inherit;
  text-decoration: none;
}
.page-back::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor;
  transform: scaleX(1); transform-origin: right center;
  transition: transform 0.45s var(--ease);
}
.page-back:hover { gap: 18px; }
.page-back:hover::after { transform: scaleX(0); transform-origin: left center; }
.page-back span[aria-hidden] { display: inline-block; transition: transform 0.3s var(--ease); }
.page-back:hover span[aria-hidden] { transform: translateX(-5px); }
.blog-post .page-back { margin-top: 32px; }

/* 関連記事 */
.related-posts { max-width: 720px; margin: 5rem auto 3rem; padding: 0 24px; }
.related-posts__title {
  font-size: 18px; font-weight: 700; letter-spacing: 0.04em;
  margin: 0 0 1.25rem; padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}
.related-posts__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.related-posts__list a {
  display: block; padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14.5px; line-height: 1.55; color: inherit; text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.related-posts__list a:hover { background: rgba(14, 165, 233, 0.07); border-color: var(--accent); transform: translateX(2px); }
@media (max-width: 640px) {
  .related-posts { margin: 3.5rem auto 2rem; padding: 0 16px; }
  .related-posts__title { font-size: 16px; }
  .related-posts__list a { font-size: 14px; padding: 0.75rem 0.9rem; }
}

/* ピラー誘導バナー（insert-pillar-link.py が挿入する .service-estimate-banner） */
.service-estimate-banner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px clamp(28px, 5vw, 44px);
}
.service-estimate-banner__text {
  margin: 0;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  font-size: 14px; line-height: 1.85; font-weight: 600; letter-spacing: 0.03em;
}
.service-estimate-banner__text a { color: inherit; text-decoration: underline; text-underline-offset: 4px; }

/* フッター帯として挿入される対応エリアリンク（insert-area-links.py の .footer__nav--area） */
.footer__nav {
  display: flex; flex-wrap: wrap;
  gap: clamp(14px, 2vw, 22px);
  font-size: 12px; font-weight: 700; letter-spacing: 0.16em;
}
.footer__nav--area {
  max-width: 720px;
  margin: 0 auto 64px;
  padding: 20px 24px 0;
  border-top: 1px solid var(--line);
}
.footer__nav a { position: relative; padding: 4px 0; color: inherit; text-decoration: none; transition: color 0.3s ease; }
.footer__nav a:hover { color: var(--accent); }
.footer__item { display: inline-block; flex: 0 0 auto; }
.footer__dot { display: inline-block; flex: 0 0 auto; font-size: 0.35em; transform: translateY(-0.25em); opacity: 0.55; }