.article-detail-page {
  --detail-paper: #f3f1ea;
  --detail-ink: #223033;
  --detail-muted: #66736e;
  --detail-line: #c8d2cc;
  background: var(--detail-paper);
  color: var(--detail-ink);
}

.article-detail-page main { background: var(--detail-paper); }
.detail-article { min-height: 70vh; }
.detail-header { padding: clamp(56px, 7vw, 112px) max(5.5vw, 28px) clamp(50px, 6vw, 90px); border-bottom: 1px solid var(--detail-line); }
.detail-header-inner { width: min(1180px, 100%); margin: 0 auto; }
.detail-back { display: inline-flex; margin-bottom: clamp(42px, 5vw, 72px); color: #285b6f; font-size: 14px; letter-spacing: .03em; }
.detail-back:hover { color: #0a7898; }
.detail-kicker { display: flex; align-items: center; gap: 18px; margin-bottom: 24px; color: #61736d; font-size: 13px; letter-spacing: .08em; }
.detail-kicker span { color: #0b5c76; }
.detail-kicker time::before { content: ""; display: inline-block; width: 28px; height: 1px; margin-right: 18px; vertical-align: middle; background: #9aaba4; }
.detail-header h1 { max-width: 960px; margin: 0; font-size: clamp(34px, 3.5vw, 56px); line-height: 1.38; font-weight: 400; letter-spacing: .005em; text-wrap: balance; }
.detail-summary { max-width: 760px; margin: 30px 0 0; color: var(--detail-muted); font-size: clamp(17px, 1.3vw, 21px); line-height: 1.9; }

.detail-layout { width: min(1180px, calc(100% - 11vw)); margin: 0 auto; padding: clamp(58px, 7vw, 110px) 0; display: grid; grid-template-columns: 230px minmax(0, 760px); justify-content: space-between; gap: clamp(55px, 8vw, 130px); align-items: start; }
.detail-rail { position: sticky; top: 120px; padding-top: 4px; color: var(--detail-muted); }
.detail-rail > span { display: block; color: #0b5c76; font-size: 11px; letter-spacing: .16em; }
.detail-rail p { margin: 24px 0 30px; font-size: 14px; line-height: 1.9; }
.detail-rail a { display: inline-flex; padding-bottom: 8px; border-bottom: 1px solid #75949a; color: #285b6f; font-size: 13px; }

.detail-content { min-width: 0; font-size: 18px; line-height: 2; color: #343f3e; }
.detail-loading { color: #7b8581; }
.article-content-body { width: 100%; }
.article-content-body p { margin: 0 0 1.55em; font-size: inherit; line-height: inherit; text-align: justify; overflow-wrap: anywhere; }
.article-content-body strong { color: #243233; font-weight: 600; }
.article-content-body em { font-style: normal; }
.article-content-body br { line-height: 1.65; }
.article-content-body img { display: block; width: auto; max-width: 100%; height: auto; margin: clamp(28px, 4vw, 54px) auto; }
.article-content-body > img:first-child { margin-top: 0; }
.article-content-body a { color: #0b5c76; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.article-content-body blockquote { margin: 2em 0; padding: 6px 0 6px 24px; border-left: 2px solid #0b5c76; color: #53625e; }
.article-content-body ul, .article-content-body ol { margin: 1.5em 0; padding-left: 1.4em; }

.detail-error { padding: 44px; background: #e3e9e3; color: #53625e; }
.detail-error strong { display: block; margin-bottom: 12px; color: var(--detail-ink); font-size: 24px; }
.detail-error a { color: #0b5c76; text-decoration: underline; }

.detail-end { width: min(1180px, calc(100% - 11vw)); margin: 0 auto; padding: clamp(42px, 5vw, 72px) 0 clamp(64px, 7vw, 110px); border-top: 1px solid var(--detail-line); display: flex; justify-content: space-between; align-items: end; gap: 40px; }
.detail-end span { display: block; margin-bottom: 18px; color: #65746f; font-size: 12px; letter-spacing: .12em; }
.detail-end div > a { display: grid; grid-template-columns: minmax(0, 680px) auto; gap: 24px; align-items: center; color: var(--detail-ink); }
.detail-end strong { font-size: clamp(22px, 2.2vw, 34px); line-height: 1.5; font-weight: 400; }
.detail-end i { color: #0b5c76; font-size: 32px; font-style: normal; transition: transform .3s ease; }
.detail-end div > a:hover i { transform: translateX(7px); }
.detail-original { flex: 0 0 auto; padding-bottom: 8px; border-bottom: 1px solid #75949a; color: #285b6f; font-size: 13px; }

.article-detail-page .site-footer { background: #dfe8e0; padding-top: 42px; padding-bottom: 32px; color: #556760; }
.article-detail-page .insights-footer-brand { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-bottom: 35px; }
.article-detail-page .insights-footer-brand img { display: block; width: 186px; height: auto; }
.article-detail-page .insights-footer-brand p { margin: 0; color: #45626a; font-size: clamp(17px, 1.5vw, 24px); }
.article-detail-page .insights-footer-brand strong { color: #064b6a; font-weight: 500; }

@media (max-width: 900px) {
  .detail-layout { grid-template-columns: 1fr; gap: 44px; }
  .detail-rail { position: static; display: grid; grid-template-columns: 1fr auto; gap: 12px 36px; align-items: end; padding-bottom: 28px; border-bottom: 1px solid var(--detail-line); }
  .detail-rail p { grid-column: 1; margin: 0; }
  .detail-rail a { grid-column: 2; grid-row: 1 / 3; }
}

@media (max-width: 680px) {
  .detail-header { padding: 42px 18px 50px; }
  .detail-back { margin-bottom: 38px; }
  .detail-kicker { gap: 12px; font-size: 12px; }
  .detail-kicker time::before { width: 18px; margin-right: 12px; }
  .detail-header h1 { font-size: clamp(30px, 8.5vw, 38px); line-height: 1.45; }
  .detail-summary { margin-top: 22px; font-size: 16px; }
  .detail-layout { width: calc(100% - 36px); padding: 48px 0 64px; gap: 36px; }
  .detail-rail { display: block; }
  .detail-rail p { margin: 18px 0 22px; }
  .detail-content { font-size: 17px; line-height: 1.95; }
  .article-content-body p { text-align: left; }
  .article-content-body img { margin: 30px auto; }
  .detail-end { width: calc(100% - 36px); padding: 36px 0 70px; display: block; }
  .detail-end div > a { gap: 16px; }
  .detail-original { display: inline-flex; margin-top: 34px; }
  .article-detail-page .insights-footer-brand { align-items: flex-start; flex-direction: column; gap: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .detail-end i { transition: none; }
}