:root {
  --ukcho-ink: #15324a;
  --ukcho-ink-deep: #0b263b;
  --ukcho-text: #20282e;
  --ukcho-muted: #687883;
  --ukcho-paper: #f5f4ef;
  --ukcho-surface: #ffffff;
  --ukcho-line: #c9d1d6;
  --ukcho-link: #8b3138;
  --ukcho-link-dark: #6f252c;
  --ukcho-max: 1180px;
}

html { scroll-behavior: smooth; }
body {
  background: var(--ukcho-paper);
  color: var(--ukcho-text);
  font-family: "Public Sans", "Segoe UI", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
.wp-site-blocks { background: var(--ukcho-paper); }
.ukcho-container, .hl-container { width: min(var(--ukcho-max), calc(100% - 48px)); margin-inline: auto; }
.ukcho-skip {
  position: fixed; left: 18px; top: -80px; z-index: 100000;
  padding: 10px 14px; background: #fff; color: var(--ukcho-ink);
  border: 2px solid var(--ukcho-ink); text-decoration: none;
}
.ukcho-skip:focus { top: 12px; }

.ukcho-site-header {
  position: fixed; inset: 0 0 auto; z-index: 9990;
  background: var(--ukcho-ink-deep); border-bottom: 1px solid rgba(255,255,255,.18);
  box-shadow: none;
}
.ukcho-header-spacer { height: 68px; }
.ukcho-nav-row { min-height: 68px; display: flex; align-items: center; gap: 26px; }
.ukcho-wordmark { display: inline-flex; flex-direction: column; color: #fff; text-decoration: none; white-space: nowrap; }
.ukcho-wordmark strong { font-family: "Newsreader", Georgia, serif; font-size: 29px; line-height: .92; font-weight: 560; letter-spacing: .015em; }
.ukcho-wordmark span { margin-top: 5px; font-size: 9px; line-height: 1; font-weight: 680; letter-spacing: .12em; text-transform: uppercase; }
.ukcho-primary-nav { display: flex; align-items: center; gap: 25px; margin-left: auto; }
.ukcho-nav-link {
  display: inline-flex; align-items: center; min-height: 44px; color: #d9e1e6;
  font-size: 13px; font-weight: 560; text-decoration: none; border-bottom: 2px solid transparent;
}
.ukcho-nav-link:hover, .ukcho-nav-link:focus-visible, .ukcho-nav-link.is-current { color: #fff; border-bottom-color: #d6a8ac; }
.ukcho-utility-link { color: #efc8cb; font-size: 12px; font-weight: 680; text-decoration: none; white-space: nowrap; }
.ukcho-utility-link:hover, .ukcho-utility-link:focus-visible { color: #fff; }
.ukcho-nav-toggle { display: none; width: 44px; height: 44px; margin-left: auto; border: 1px solid rgba(255,255,255,.32); background: transparent; color: #fff; }
.ukcho-nav-toggle span { display: block; width: 19px; height: 1px; margin: 5px auto; background: currentColor; }
.ukcho-mobile-nav[hidden] { display: none; }
.ukcho-mobile-nav { position: fixed; inset: 0; z-index: 10010; display: grid; grid-template-columns: 1fr min(86vw, 390px); }
.ukcho-mobile-scrim { grid-column: 1; border: 0; background: rgba(4,16,25,.68); }
.ukcho-mobile-panel { grid-column: 2; height: 100vh; padding: 22px 24px; overflow-y: auto; background: var(--ukcho-ink-deep); border-left: 1px solid rgba(255,255,255,.18); }
.ukcho-mobile-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 15px; border-bottom: 1px solid rgba(255,255,255,.22); color: #aebdc6; font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.ukcho-mobile-close { min-width: 44px; min-height: 44px; border: 0; background: transparent; color: #efc8cb; font-size: 12px; font-weight: 700; }
.ukcho-mobile-panel nav { display: flex; flex-direction: column; }
.ukcho-mobile-link { display: block; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.2); color: #eef2f4; font-family: "Newsreader", Georgia, serif; font-size: 22px; text-decoration: none; }
.ukcho-mobile-link:hover, .ukcho-mobile-link:focus-visible, .ukcho-mobile-link.is-current { color: #efc8cb; }
.ukcho-mobile-result { display: inline-flex; margin-top: 22px; color: #efc8cb; font-size: 13px; font-weight: 680; }

.ukcho-site-footer { background: var(--ukcho-ink-deep); color: #d9e1e6; }
.ukcho-footer-main { grid-template-columns: 1.25fr 1fr; gap: 70px; padding: 50px 0 34px; }
.ukcho-wordmark--footer { color: #fff; }
.ukcho-footer-brand p { max-width: 470px; margin: 20px 0 0; color: #bdc9d0; font-size: 12px; }
.ukcho-footer-cols { grid-template-columns: 1fr 1fr; gap: 38px; }
.ukcho-footer-title { margin: 0 0 13px; color: #fff; font-family: "Public Sans", sans-serif; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.ukcho-footer-links { margin: 0; padding: 0; list-style: none; }
.ukcho-footer-links li { margin: 7px 0; }
.ukcho-footer-link, .ukcho-footer-bottom a { color: #d9e1e6; font-size: 12px; text-decoration: none; }
.ukcho-footer-link:hover, .ukcho-footer-link:focus-visible, .ukcho-footer-bottom a:hover, .ukcho-footer-bottom a:focus-visible { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.ukcho-footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; padding: 17px 0 24px; border-top: 1px solid rgba(255,255,255,.22); color: #aebdc6; font-size: 11px; }

/* Date-led research bulletin: project-specific archive design. */
.ukcho-news-masthead { padding: clamp(52px, 7vw, 86px) 0 32px; border-bottom: 1px solid var(--ukcho-line); }
.ukcho-news-page-title { max-width: 820px; margin: 8px 0 16px; color: var(--ukcho-ink); font-family: "Newsreader", Georgia, serif; font-size: clamp(42px, 6vw, 72px); line-height: 1; font-weight: 500; letter-spacing: -.02em; }
.ukcho-news-page-intro { max-width: 760px; margin: 0; color: #52636d; font-size: 16px; line-height: 1.65; }
.hl-archive-main { padding: 18px 0 70px; }
.hl-news-list { display: block; margin: 0; padding: 0; border-top: 1px solid var(--ukcho-line); }
.hl-news-list > li { display: grid; grid-template-columns: 126px minmax(0,1fr) 150px; gap: 28px; align-items: start; padding: 25px 0; border-bottom: 1px solid var(--ukcho-line); background: transparent; }
.hl-news-date { color: var(--ukcho-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.hl-news-title { margin: 0; font-family: "Newsreader", Georgia, serif; font-size: clamp(24px,3vw,34px); line-height: 1.12; font-weight: 500; }
.hl-news-title a { color: var(--ukcho-ink); text-decoration: none; }
.hl-news-title a:hover { color: var(--ukcho-link); }
.hl-news-excerpt { max-width: 650px; color: var(--ukcho-muted); font-size: 13px; }
.hl-news-date { grid-column: 1; grid-row: 1; }
.hl-news-title { grid-column: 2; grid-row: 1; }
.hl-news-excerpt { grid-column: 2; grid-row: 2; }
.hl-news-cover { grid-column: 3; grid-row: 1 / span 3; }
.hl-news-cover img { width: 150px; aspect-ratio: 4/3; object-fit: cover; border-radius: 0; filter: saturate(.8); }
.hl-pagination { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.hl-pagination a, .hl-pagination .current { display: inline-flex; align-items: center; min-height: 42px; padding: 7px 12px; border: 1px solid var(--ukcho-line); color: var(--ukcho-ink); text-decoration: none; }
.hl-pagination .current, .hl-pagination a:hover, .hl-pagination a:focus-visible { border-color: var(--ukcho-ink); background: var(--ukcho-ink); color: #fff; }

/* Scholarly paper: asymmetric article header with evidence rail. */
.hl-article-head { max-width: var(--ukcho-max); display: grid; grid-template-columns: minmax(0,1.15fr) minmax(300px,.85fr); gap: 42px; align-items: end; padding: 58px 0 34px; border-bottom: 1px solid var(--ukcho-line); }
.hl-article-head .wp-block-post-title { margin: 0; color: var(--ukcho-ink); font-family: "Newsreader", Georgia, serif; font-size: clamp(38px,5vw,62px); line-height: 1.04; font-weight: 500; }
.hl-article-head .wp-block-post-date { color: var(--ukcho-muted); font-size: 12px; }
.hl-article-cover { grid-column: 2; grid-row: 1 / span 3; }
.hl-article-cover img { width: 100%; max-height: 360px; object-fit: cover; border-radius: 0; filter: saturate(.82); }
/* A missing cover removes the block entirely; collapse the masthead grid so the
   breadcrumb, title and metadata keep their natural reading order. */
.hl-article-head:not(:has(.hl-article-cover img)) { max-width: 900px; display: block; padding-top: 0; }
.hl-article-head:not(:has(.hl-article-cover img)) .hl-breadcrumb { margin-bottom: 28px; }
.hl-article-head:not(:has(.hl-article-cover img)) .wp-block-post-title { max-width: 900px; font-size: clamp(36px,4vw,56px); }
.hl-article-head:not(:has(.hl-article-cover img)) .wp-block-post-date { margin-top: 22px; }
.hl-article-body { max-width: 820px; }
.hl-prose { font-family: "Public Sans", sans-serif; color: #37444c; }
.hl-prose h2, .hl-prose h3 { font-family: "Newsreader", Georgia, serif; color: var(--ukcho-ink); font-weight: 500; }
.hl-toc-item.is-active { border-left-color: var(--ukcho-link); }
.hl-toc-item.is-active > a { color: var(--ukcho-ink); }
.hl-back-to-top { background: var(--ukcho-ink); color: #fff; border-radius: 0; }
.hl-post-tags, .hl-post-nav, .hl-related, .hl-article-cta { border-radius: 0; }
.hl-article-cta { margin: 28px 0; padding: 18px; gap: 20px; align-items: center; border: 0; border-top: 1px solid rgba(255,255,255,.32); border-bottom: 1px solid rgba(255,255,255,.32); background: var(--ukcho-ink-deep); box-shadow: none; }
.hl-article-cta-body { align-self: center; }
.hl-article-cta-title { font-family: "Newsreader", Georgia, serif; font-size: 23px; line-height: 1.18; font-weight: 520; }
.hl-article-cta-sub { max-width: 430px; font-size: 13px; line-height: 1.5; }
.hl-article-cta-bullets { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px 16px; margin-bottom: 12px; font-size: 12px; line-height: 1.4; }
.hl-article-cta-bullets li { margin: 0; }
.hl-cta-online-btn { height: 40px; min-height: 0; padding: 0 14px; border-radius: 0; background: #fff; color: var(--ukcho-ink-deep); font-size: 12px; line-height: 1.2; }
.hl-prose .hl-article-cta .hl-cta-online-btn { color: var(--ukcho-ink-deep); }
.hl-cta-scan-img, .hl-cta-qr-img { width: 140px; height: 140px; max-width: 140px; max-height: 140px; object-fit: contain; background: #fff; }
.hl-cta-qr-dual { display: flex; flex-wrap: nowrap; gap: 12px; }
.hl-cta-qr-panel { margin: 0; color: #fff; text-align: center; }
.hl-cta-qr-panel figcaption { margin-top: 6px; font-size: 11px; }

.ukcho-site-header a:focus-visible, .ukcho-site-header button:focus-visible, .ukcho-site-footer a:focus-visible { outline: 3px solid #d6aa2e; outline-offset: 3px; }

@media (max-width: 980px) {
  .ukcho-primary-nav, .ukcho-utility-link { display: none; }
  .ukcho-nav-toggle { display: block; }
  .hl-news-list > li { grid-template-columns: 92px minmax(0,1fr) 120px; gap: 20px; }
  .hl-news-cover img { width: 120px; }
  .hl-article-head { grid-template-columns: 1fr; }
  .hl-article-cover { grid-column: 1; grid-row: auto; }
}

@media (max-width: 768px) {
  .ukcho-container, .hl-container { width: min(var(--ukcho-max), calc(100% - 40px)); }
  .ukcho-header-spacer, .ukcho-nav-row { min-height: 62px; height: 62px; }
  .ukcho-wordmark strong { font-size: 26px; }
  .ukcho-footer-main, .ukcho-footer-cols { grid-template-columns: 1fr; gap: 28px; }
  .hl-news-list > li { grid-template-columns: 1fr; gap: 9px; }
  .hl-news-date, .hl-news-title, .hl-news-excerpt, .hl-news-cover { grid-column: 1; grid-row: auto; }
  .hl-news-cover img { width: 100%; max-height: 240px; }
  .hl-article-head { padding-top: 38px; }
  .hl-article-head:not(:has(.hl-article-cover img)) { padding-top: 0; }
  .ukcho-news-masthead { padding-top: 42px; }
  .hl-article-cta { padding: 18px; gap: 16px; }
  .hl-article-cta-bullets { grid-template-columns: 1fr; }
  .hl-cta-scan-img, .hl-cta-qr-img { width: 132px; height: 132px; max-width: 132px; max-height: 132px; }
  .hl-cta-qr-dual { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }