.free-article, .article-hub { max-width: 920px; }
.article-nav { display: flex; flex-wrap: wrap; gap: 18px; padding: 22px 0 0; color: #087c83; font-size: .9rem; font-weight: 700; }
.article-nav a, .article-back a, .article-list a { text-decoration: underline; text-underline-offset: 3px; }
.free-article .article-header, .article-hub .article-header { padding-top: 48px; }
.article-kicker { margin: 0 0 16px; color: #087c83; font-size: .82rem; font-weight: 800; letter-spacing: .08em; }
.free-article .article-header h1, .article-hub .article-header h1 { font-size: clamp(2rem, 4.6vw, 3.5rem); }
.article-hub .article-header p:last-child { max-width: 700px; color: var(--muted); }
.free-article .article-body { max-width: 780px; padding-top: 34px; overflow-wrap: anywhere; }
.free-article .article-body section { margin: 46px 0 0; }
.free-article .article-body section > p:last-child { margin-bottom: 0; }
.free-article .article-body a { color: #087c83; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.free-article .article-body > p:first-child { color: var(--ink); font-size: 1.07rem; }
.free-article .article-body table { width: 100%; border-collapse: collapse; }
.free-article .article-body th, .free-article .article-body td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.free-article .article-body th { background: var(--cyan-soft); }
.table-scroll { max-width: 100%; overflow-x: auto; }
.article-back { margin: 58px 0 0; color: #087c83; }
.article-list { display: grid; gap: 16px; margin: 34px 0 0; padding: 0; list-style: none; }
.article-list li { padding: 22px 24px; border: 1px solid var(--line); background: var(--surface); }
.article-list h2 { margin: 0 0 8px; font-family: "Noto Serif JP", "Yu Mincho", serif; font-size: clamp(1.2rem, 2.5vw, 1.55rem); line-height: 1.4; }
.article-list p { margin: 0; color: var(--muted); }
.site-footer { flex-wrap: wrap; }
.site-footer .analytics-note { flex-basis: 100%; }
@media (max-width: 640px) {
  .free-article .article-header, .article-hub .article-header { padding-top: 34px; }
  .free-article .article-body { padding-top: 24px; }
  .free-article .article-body section { margin-top: 38px; }
  .article-list li { padding: 18px; }
}