:root {
  --blue: #4f91c8;
  --ink: #28343f;
  --muted: #64727e;
  --line: #e4e9ed;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; font-size: 16px; line-height: 1.6; }
a { color: #285d86; text-decoration: none; }
a:hover { color: #126da9; text-decoration: underline; }
button, input { font: inherit; }
.wrap { width: min(1160px, calc(100% - 36px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.site-header { background: #fff; border-bottom: 1px solid var(--line); }
.header-main { min-height: 94px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 29px; line-height: 1.1; font-weight: 900; color: #262d35; white-space: nowrap; }
.brand:hover { text-decoration: none; color: #262d35; }
.brand img { width: 48px; height: 48px; object-fit: contain; }
.search-form { display: flex; align-items: center; margin-left: auto; }
.search-form input, .search-page-form input { min-height: 42px; padding: 0 13px; border: 1px solid #d7dfe6; border-radius: 3px 0 0 3px; outline: 0; }
.search-form input:focus, .search-page-form input:focus { border-color: var(--blue); }
.search-form button, .search-page-form button { min-height: 42px; padding: 0 17px; background: var(--blue); border: 1px solid var(--blue); border-radius: 0 3px 3px 0; color: #fff; font-weight: 700; cursor: pointer; }
.search-form button:hover, .search-page-form button:hover { background: #3679ae; }
.menu-toggle { display: none; }
.site-nav { border-top: 1px solid #f2f4f6; background: #fafbfc; }
.nav-inner { display: flex; }
.site-nav a { padding: 16px 27px; border-left: 1px solid var(--line); font-size: 13px; font-weight: 800; text-transform: uppercase; color: #3b4147; }
.site-nav a:last-child { border-right: 1px solid var(--line); }
.site-nav a:hover { background: #eaf3fa; text-decoration: none; }
.page-main { flex: 0 0 auto; padding-block: 29px 57px; }
h1, h2, h3 { color: #262d35; line-height: 1.25; }
h1 { margin: 0 0 20px; font-size: clamp(28px, 3.5vw, 39px); }
h2 { margin: 0; font-size: 25px; }
h3 { margin: 0; font-size: 19px; }
.eyebrow { margin: 0; color: #4d8bbb; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.home-intro { max-width: 820px; padding: 34px 0 18px; }
.home-intro h1 { margin: 6px 0 13px; font-size: clamp(36px, 4.4vw, 54px); }
.home-intro p:last-child { color: #586774; font-size: 19px; }
.content-section { margin-top: 43px; }
.section-heading { position: relative; display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 25px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.section-heading:after { position: absolute; bottom: -2px; left: 0; width: 64px; height: 3px; background: var(--blue); content: ""; }
.section-heading a { font-size: 14px; }
.sections-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.section-tile { display: flex; flex-direction: column; justify-content: center; min-height: 130px; padding: 23px; border: 1px solid var(--line); border-top: 3px solid var(--blue); background: #f8fbfd; }
.section-tile:hover { background: #eef7fd; text-decoration: none; }
.section-tile span { color: #273847; font-size: 21px; font-weight: 800; }
.section-tile strong { margin-top: 7px; color: #637685; font-size: 13px; }
.cards { display: grid; gap: 23px; }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.article-card { display: flex; flex-direction: column; min-height: 188px; padding: 19px 20px 23px; border: 1px solid var(--line); background: #fff; }
.article-card:hover { border-color: #adcbe1; box-shadow: 0 3px 16px #2f58700d; }
.article-card.compact { min-height: 135px; }
.article-card h3 { margin: 7px 0 10px; }
.article-card h3 a { color: #29343e; }
.article-card h3 a:hover { color: #1770ac; }
.article-card p { margin: 0; color: #5a6874; font-size: 15px; line-height: 1.55; }
.card-section { color: #4c8bbc; font-size: 11px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.breadcrumbs { margin: 4px 0 27px; color: #82909a; font-size: 13px; }
.breadcrumbs span { padding-inline: 9px; color: #b5bdc3; }
.archive-heading { margin-bottom: 28px; }
.archive-heading h1 { margin: 5px 0; }
.archive-heading p:last-child { margin: 0; color: #6d7a84; }
.pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 7px; margin-top: 34px; }
.pagination a, .pagination span { display: grid; place-items: center; min-width: 38px; height: 38px; border: 1px solid var(--line); font-weight: 700; }
.pagination span { border-color: var(--blue); background: var(--blue); color: #fff; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: 32px; }
.article-content { min-width: 0; }
.article-body { color: #333d46; font-size: 18px; line-height: 1.73; white-space: pre-line; }
.article-body h2 { margin: 36px 0 15px; font-size: 27px; white-space: normal; }
.article-body h3 { margin: 29px 0 12px; font-size: 22px; white-space: normal; }
.article-body ul, .article-body ol { padding-left: 26px; }
.article-body li { margin: 4px 0; white-space: normal; }
.article-body blockquote { margin: 20px 0; padding-left: 20px; border-left: 3px solid var(--blue); color: #4e5d69; }
.toc { margin: 23px 0 31px; padding: 18px 24px; border: 1px solid var(--line); background: #fbfcfd; }
.toc h2 { margin-bottom: 11px; font-size: 18px; }
.toc ol { margin: 0; padding-left: 22px; }
.toc li { padding: 4px 0; font-size: 15px; }
.toc-h3 { margin-left: 18px; }
.sidebar-box { margin-bottom: 22px; padding: 19px; border: 1px solid var(--line); }
.sidebar-box h2 { width: max-content; margin-bottom: 15px; padding-bottom: 11px; border-bottom: 3px solid var(--blue); font-size: 18px; }
.sidebar-box ul { margin: 0; padding: 0; list-style: none; }
.sidebar-box li { padding: 11px 0; border-bottom: 1px solid #edf0f3; font-size: 14px; line-height: 1.45; }
.sidebar-box li:last-child { border: 0; }
.sidebar-ranked ol { margin: 0; padding-left: 21px; }
.sidebar-ranked li { padding-left: 3px; }
.sidebar-ranked li::marker { color: #6b9dc2; font-weight: 700; }
.sidebar-source { margin: 12px 0 0; color: #788895; font-size: 12px; line-height: 1.4; }
.related { margin-top: 48px; }
.related .article-card { min-height: 125px; }
.service-page { max-width: 100%; min-height: 280px; }
.service-page p { max-width: 850px; font-size: 18px; }
.service-page li { margin-block: 7px; }
.site-map-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.site-map-grid h2 { margin-bottom: 13px; font-size: 20px; }
.site-map-grid ul { padding-left: 21px; font-size: 14px; line-height: 1.5; }
.search-page-form { margin: 24px 0; }
.search-page-form label { display: block; margin-bottom: 8px; font-weight: 700; }
.search-page-form div { display: flex; }
.search-page-form input { width: min(380px, 100%); }
.site-footer { margin-top: auto; padding: 42px 0; border-top: 1px solid var(--line); background: #f4f7f9; color: #53616d; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr .9fr; gap: 42px; }
.footer-brand { color: #2b333b; font-size: 20px; font-weight: 900; }
.site-footer h2 { width: max-content; margin-bottom: 17px; padding-bottom: 8px; border-bottom: 3px solid var(--blue); font-size: 17px; }
.site-footer p { margin: 13px 0; font-size: 14px; line-height: 1.5; }
.site-footer small { font-size: 12px; line-height: 1.6; }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li { margin-bottom: 9px; font-size: 14px; }
.footer-cats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 14px; }
.footer-cats li { white-space: nowrap; }
.site-footer a { color: #455866; }
@media (max-width: 900px) {
  .cards.four, .cards.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: minmax(0, 1fr) 245px; gap: 22px; }
  .brand { font-size: 24px; }
  .site-nav a { padding: 15px 18px; }
}
@media (max-width: 650px) {
  .wrap { width: calc(100% - 30px); }
  .header-main { min-height: 75px; flex-wrap: wrap; gap: 12px; padding-block: 10px; }
  .brand { max-width: calc(100% - 100px); font-size: 22px; }
  .brand img { width: 39px; height: 39px; }
  .menu-toggle { display: block; margin-left: auto; padding: 9px 11px; border: 1px solid var(--line); border-radius: 3px; background: #fff; font-size: 13px; font-weight: 700; }
  .search-form { order: 3; width: 100%; margin: 0; }
  .search-form input { flex: 1; width: 0; }
  .site-nav { display: none; }
  .site-nav.open { display: block; }
  .nav-inner { flex-direction: column; }
  .site-nav a { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .page-main { padding-block: 20px 40px; }
  .home-intro { padding: 19px 0 6px; }
  .home-intro p:last-child { font-size: 17px; }
  .sections-grid, .cards.four, .cards.three, .cards.two, .site-map-grid { grid-template-columns: 1fr; }
  .content-section { margin-top: 34px; }
  .section-heading a { max-width: 120px; text-align: right; }
  .article-layout { grid-template-columns: 1fr; }
  .article-body { font-size: 17px; line-height: 1.7; }
  .article-body h2 { font-size: 24px; }
  .sidebar { margin-top: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
}

/* Topic navigation and editorial image system */
.nav-inner { justify-content: space-between; }
.site-nav a { flex: 1; padding: 15px 10px; text-align: center; white-space: nowrap; font-size: 12px; }
.home-page .site-nav { display: none; }
.home-page .menu-toggle { display: none; }
.image-tiles { align-items: stretch; }
.image-tile { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); color: var(--ink); background: #fff; }
.image-tile:hover { border-color: #9dbed6; box-shadow: 0 6px 24px #2f587016; text-decoration: none; }
.image-tile img { display: block; width: 100%; height: 240px; flex: none; object-fit: cover; }
.image-tile span { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 18px 20px 20px; }
.image-tile strong { font-size: 22px; line-height: 1.2; }
.image-tile small { color: var(--muted); white-space: nowrap; }
.shortcuts-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.shortcuts-grid a { display: flex; flex-direction: column; min-height: 104px; justify-content: space-between; padding: 15px; border: 1px solid var(--line); background: #f8fbfd; color: var(--ink); }
.shortcuts-grid a:hover { background: #ecf6fc; text-decoration: none; }
.shortcuts-grid span { font-weight: 700; line-height: 1.3; }
.shortcuts-grid small { color: var(--muted); }
.topic-guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.topic-guide-card { display: grid; grid-template-columns: 35% minmax(0,1fr); overflow: hidden; min-height: 185px; border: 1px solid var(--line); color: var(--ink); }
.topic-guide-card:hover { text-decoration: none; border-color: #9dbed6; }
.topic-guide-card img { width: 100%; height: 100%; object-fit: cover; }
.topic-guide-card span { display: flex; flex-direction: column; align-items: start; padding: 22px; }
.topic-guide-card strong { font-size: 21px; line-height: 1.2; }
.topic-guide-card small { margin-top: 8px; color: var(--muted); line-height: 1.4; }
.topic-guide-card em { margin-top: auto; color: #437da7; font-size: 13px; font-style: normal; font-weight: 700; }
.article-topic { margin: -7px 0 20px; font-size: 13px; font-weight: 700; }
.article-body { white-space: normal; }
.article-body p { margin: 0 0 22px; }
.article-body h2, .article-body h3 { clear: both; }
.article-body ul, .article-body ol { margin: 0 0 26px; padding-left: 25px; }
.article-body li { margin: 0; padding: 7px 0 7px 5px; line-height: 1.58; }
.article-body li + li { border-top: 1px solid #edf0f3; }
.article-body strong { font-weight: 700; }
.video-block { margin: 28px 0 32px; }
.video-poster { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: #eaf0f4; color: white; }
.video-poster img { display: block; width: 100%; height: 100%; object-fit: cover; }
.video-poster::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 42%, rgba(14, 34, 48, .78)); }
.video-play { position: absolute; z-index: 1; top: 50%; left: 50%; width: 72px; height: 50px; transform: translate(-50%, -50%); border-radius: 14px; background: #cf3030; }
.video-play::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-40%, -50%); border-top: 11px solid transparent; border-bottom: 11px solid transparent; border-left: 18px solid white; }
.video-label { position: absolute; z-index: 1; bottom: 18px; left: 20px; font-weight: 700; font-size: 16px; }
.video-poster:hover .video-play, .video-poster:focus-visible .video-play { background: #b62222; }
.video-block figcaption { padding: 8px 0; color: var(--muted); font-size: 13px; }
.author-card { display: flex; align-items: flex-start; gap: 18px; margin: 32px 0 0; padding: 22px; border: 1px solid #dbe8f0; background: #f5fafd; }
.author-monogram { flex: 0 0 50px; display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%; background: #dceefa; color: #3d7da8; font-size: 25px; font-weight: 800; }
.author-card h2 { margin: 2px 0 2px; font-size: 19px; }
.author-card p { margin: 0 0 7px; font-size: 14px; line-height: 1.5; }
.author-role { color: #477ca3; font-weight: 700; }
.author-card .author-note { margin-top: 9px; color: #697985; font-size: 12px; }
.authors-section { margin-top: 38px; }
.authors-section > h2 { margin-bottom: 17px; }
.authors-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.authors-grid .author-card { display: block; margin: 0; }
.authors-grid .author-monogram { margin-bottom: 15px; }
.sitemap-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; align-items: start; }
.sitemap-groups details { border: 1px solid var(--line); background: #fff; }
.sitemap-groups summary { display: flex; justify-content: space-between; gap: 15px; padding: 18px 20px; cursor: pointer; list-style: none; }
.sitemap-groups summary::-webkit-details-marker { display: none; }
.sitemap-groups summary strong { display: block; font-size: 18px; }
.sitemap-groups summary small { display: block; margin-top: 4px; color: var(--muted); line-height: 1.4; }
.sitemap-groups summary em { flex: 0 0 auto; color: #477ca3; font-size: 13px; font-style: normal; }
.sitemap-group-body { padding: 0 20px 20px; border-top: 1px solid var(--line); }
.sitemap-group-body p { margin: 10px 0; font-size: 14px; }
.sitemap-group-body ul { columns: 1; margin: 0; padding-left: 20px; }
.sitemap-group-body li { margin: 6px 0; break-inside: avoid; font-size: 14px; line-height: 1.45; }
.article-card .card-image { width: calc(100% + 40px); height: 120px; margin: -19px -20px 15px; object-fit: cover; }
.related .article-card { overflow: hidden; }
@media (max-width: 1000px) {
  .site-nav a { padding: 13px 6px; font-size: 11px; }
  .shortcuts-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .authors-grid { grid-template-columns: 1fr; }
}
@media (max-width: 750px) {
  .site-nav { display: none; }
  .site-nav.open { display: block; }
  .menu-toggle { display: block; margin-left: auto; padding: 9px 11px; border: 1px solid var(--line); border-radius: 3px; background: #fff; font-size: 13px; font-weight: 700; }
  .home-page .menu-toggle { display: none; }
  .nav-inner { flex-direction: column; }
  .site-nav a { text-align: left; padding: 12px 16px; font-size: 13px; }
  .image-tile span { display: block; }
  .image-tile small { display: block; margin-top: 5px; }
  .topic-guide-grid, .sitemap-groups { grid-template-columns: 1fr; }
}
@media (max-width: 650px) {
  .image-tile img { height: 220px; }
  .shortcuts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .image-tile strong { font-size: 20px; }
  .topic-guide-card { grid-template-columns: 38% minmax(0,1fr); min-height: 152px; }
  .topic-guide-card span { padding: 14px; }
  .topic-guide-card strong { font-size: 18px; }
  .topic-guide-card small { font-size: 12px; }
  .article-body li { padding-block: 7px; }
  .author-card { padding: 17px; gap: 12px; }
}
.footer-cats { gap: 5px 20px; }
.footer-cats li { white-space: normal; line-height: 1.35; margin-bottom: 0; }