/* Article reading layout, responsive evidence, and source navigation.
 * Exports: topic page classes. Deps: research.css tokens and pages.py. */
.hero-visual { min-height: 480px; }
.hero h1 { color: #ebf4ef; font-size: clamp(32px, 3.5vw, 50px); max-width: 13ch; margin: 18px 0; }
.hero-copy .standfirst { color: #c3d6ce; font-size: 18px; line-height: 1.6; max-width: 35ch; margin: 0; }
.hero-actions { display: flex; gap: 24px; flex-wrap: wrap; }
.stats { max-width: 960px; margin: auto; padding: 32px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stat { padding: 0 24px; border-right: 1px solid var(--border); }
.stat:first-child { padding-left: 0; }
.stat:last-child { border: 0; padding-right: 0; }
.stat-value { color: var(--green); font-size: clamp(24px, 3vw, 36px); line-height: 1.2; font-weight: 550; letter-spacing: -.04em; }
.stat-label { font-size: 14px; margin-top: 10px; }
.stat-sub { color: var(--text-dim); font-size: 12px; margin-top: 4px; }
.reading-nav { position: sticky; top: 0; z-index: 10; border-block: 1px solid var(--border); background: var(--bg); }
.reading-nav-inner { max-width: 800px; margin: auto; padding: 0 32px; display: flex; align-items: center; gap: 28px; overflow-x: auto; }
.reading-nav a { color: var(--text-dim); font-size: 13px; min-height: 52px; display: inline-flex; align-items: center; white-space: nowrap; }
.reading-nav a:hover { color: var(--green); }
.article-body { width: min(100% - 64px, 736px); margin: 0 auto; font-size: 18px; line-height: 1.8; overflow-wrap: anywhere; }
.article-body h2 { margin: 56px 0 20px; font-size: 30px; color: var(--text); scroll-margin-top: 80px; }
.article-body h3 { margin: 32px 0 16px; font-size: 22px; }
.article-body p { margin: 0 0 22px; }
.article-body strong { color: var(--text); font-weight: 650; }
.article-body a { text-decoration: underline; text-decoration-color: var(--border); }
.article-body a:hover { text-decoration-color: var(--green); }
.article-body code { color: var(--green); font: .85em/1.5 var(--mono); }
.table-scroll { overflow-x: auto; margin: 24px 0; border-block: 1px solid var(--border); }
.article-body table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 1.6; }
.article-body th { text-align: left; color: var(--text-dim); font-weight: 500; background: var(--bg-block); white-space: nowrap; }
.article-body td, .article-body th { padding: 14px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
.article-body tr:last-child td { border: 0; }
.article-body pre, .block { background: var(--bg-block); padding: 20px; border-radius: 6px; overflow-x: auto; font: 13px/1.7 var(--mono); }
.article-body pre { white-space: pre-wrap; }
.block pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
figure { margin: 32px 0; }
figure img { display: block; width: 100%; height: auto; border-radius: 4px; }
figure a { display: block; }
figcaption, .fig-source { color: var(--text-dim); font-size: 13px; line-height: 1.6; margin: 12px 0 0; }
.article-body .fig-source { margin: 4px 0 0; }
.evidence-section { width: min(100% - 64px, 736px); margin: 48px auto 0; padding-top: 32px; border-top: 1px solid var(--border); }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.section-head h2 { font-size: 26px; margin: 0; }
.evidence-section p { color: var(--text-dim); }
.action-link { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; background: var(--green); color: var(--bg); padding: 10px 20px; border-radius: 5px; font-size: 14px; font-weight: 600; }
.action-link:hover { background: var(--green-dim); text-decoration: none; }
summary { cursor: pointer; min-height: 48px; padding: 12px 0; color: var(--green); }
@media (max-width: 760px) {
  .hero-visual { min-height: 0; }
  .hero h1 { font-size: 34px; max-width: 18ch; margin: 10px 0 14px; }
  .hero-copy .standfirst { font-size: 16px; max-width: 38ch; }
  .hero-copy .kicker { margin: 0; font-size: 11px; }
  .stats { padding: 24px 20px; gap: 16px; }
  .stat { padding: 0; border: 0; }
  .stat-value { font-size: 27px; }
  .stat-label { font-size: 12px; line-height: 1.4; margin-top: 8px; }
  .stat-sub { font-size: 11px; }
  .reading-nav-inner { padding: 0 20px; gap: 24px; }
  .article-body { width: calc(100% - 40px); font-size: 17px; line-height: 1.8; }
  .article-body h2 { margin-top: 40px; font-size: 26px; }
  .article-body table { min-width: 500px; }
  .evidence-section { width: calc(100% - 40px); margin-top: 36px; }
  .section-head h2 { font-size: 24px; }
}
@media (max-width: 360px) {
  .hero h1 { font-size: 30px; }
  .stat-value { font-size: 24px; }
  .stat-sub { display: none; }
}