:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-soft: #f5f7f7;
  --border: #d8e2e1;
  --text: #16323a;
  --muted: #5f7379;
  --teal: #0f4a53;
  --teal-soft: #e6f0ef;
  --gold: #896018;
  --gold-soft: #fbf3e4;
  --accent: #2b8c74;
  --shadow: 0 8px 24px rgba(15, 41, 46, 0.06);
  --radius: 5px;
  --wrap: 1260px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; display: block; }
strong { font-weight: 700; }
h1, h2, h3, h4 { margin: 0 0 .55em; font-family: Georgia, "Times New Roman", serif; color: #11343d; line-height: 1.12; }
h1 { font-size: clamp(2.6rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.65rem, 2vw, 2.15rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em 1.2em; }
input, select, button { font: inherit; }
button { cursor: pointer; }
.sr-only, .skip-link {
  position: absolute;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link:focus {
  position: fixed; width: auto; height: auto; margin: 1rem; padding: .5rem .75rem;
  clip: auto; background: #fff; border: 1px solid var(--border); z-index: 999;
}
.section-wrap { width: min(var(--wrap), calc(100% - 2rem)); margin: 0 auto; }
.eyebrow {
  margin-bottom: .65rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em;
  font-size: .76rem; font-weight: 700;
}
.small-muted, .small-note, .note { color: var(--muted); font-size: .95rem; }
.site-header {
  position: sticky; top: 0; z-index: 20; background: rgba(252,251,248,.9); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(216,226,225,.9);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; min-height: 84px;
}
.brand { display: flex; align-items: center; gap: .95rem; min-width: 0; }
.brand:hover { text-decoration: none; }
.brand-logo { width: 92px; height: 40px; flex: 0 0 auto; }
.brand-chrom { fill: none; stroke: var(--teal); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.brand-network line { stroke: #93b9b3; stroke-width: 1.7; }
.brand-network circle { fill: var(--teal); }
.brand-network circle:nth-of-type(2),
.brand-network circle:nth-of-type(6) { fill: var(--gold); }
.brand-text { display: flex; flex-direction: column; gap: .18rem; min-width: 0; }
.brand-text strong { font-family: Georgia, "Times New Roman", serif; font-size: 2rem; line-height: 1; color: #12343b; }
.brand-text .accent { color: var(--gold); }
.brand-text small { color: var(--muted); font-size: .84rem; }
.main-nav { display: flex; align-items: center; gap: 1.35rem; }
.main-nav a { color: var(--text); font-weight: 500; }
.main-nav a[aria-current="page"] { color: var(--teal); }
.main-nav .nav-submit {
  padding: .58rem .95rem; border: 1px solid rgba(176,123,31,.35); border-radius: 999px; color: var(--gold);
}
.nav-toggle {
  display: none; border: 1px solid var(--border); background: var(--surface); border-radius: 999px; padding: .5rem .85rem; color: var(--text);
}

.home-hero { padding: 3.25rem 0 1.4rem; }
.home-hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(260px, .8fr); gap: 2rem; align-items: center; }
.hero-copy { max-width: 42rem; font-size: 1.18rem; color: #304f57; margin-bottom: 1.4rem; }
.home-search { margin-bottom: .85rem; }
.search-row {
  display: flex; gap: 0; border: 1px solid #bfd2d0; background: #fff; border-radius: 14px; overflow: hidden;
  box-shadow: 0 6px 16px rgba(14, 43, 46, 0.04);
}
.search-row input { flex: 1; border: 0; background: transparent; padding: .95rem 1.1rem; min-width: 0; color: var(--text); }
.search-row button, .button {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  border-radius: 12px; border: 1px solid transparent; padding: .82rem 1.08rem; font-weight: 600;
}
.search-row button { border-radius: 0; min-width: 120px; background: var(--teal); color: #fff; }
.button.primary { background: var(--teal); color: #fff; }
.button.secondary { background: #fff; color: var(--teal); border-color: var(--border); }
.search-tabs { display: inline-flex; align-items: center; gap: .25rem; padding: .25rem; border: 1px solid var(--border); border-radius: 999px; background: #fff; }
.search-tabs a { color: var(--muted); padding: .42rem .95rem; border-radius: 999px; font-size: .95rem; }
.search-tabs a.active { background: var(--teal); color: #fff; }
.action-links {
  display: flex; flex-wrap: wrap; gap: .85rem 1rem; align-items: center; margin-top: 1.35rem; padding-top: 1.1rem;
}
.action-links a {
  display: inline-flex; align-items: center; gap: .55rem; color: var(--teal); font-weight: 500; padding-right: 1.1rem; position: relative;
}
.action-links a:not(:last-child)::after {
  content: ""; position: absolute; right: .25rem; top: 50%; width: 1px; height: 1.4rem; background: var(--border); transform: translateY(-50%);
}
.action-links .strategy-link { color: var(--gold); }
.action-icon {
  display: inline-flex; align-items: center; justify-content: center; width: 1.65rem; height: 1.65rem; border-radius: 999px; border: 1px solid currentColor; font-size: .9rem;
}
.hero-visual {
  position: relative; min-height: 300px; border-left: 1px solid rgba(216,226,225,.6); padding-left: 1.5rem;
}
.hero-spectrum {
  position: absolute; inset: 0 1rem 0 1rem;
  background:
    linear-gradient(to top, transparent 0 94%, rgba(0,0,0,0) 94%),
    linear-gradient(90deg, transparent 0 8%, rgba(15,74,83,.08) 8% 8.5%, transparent 8.5% 18%, rgba(15,74,83,.16) 18% 18.6%, transparent 18.6% 27%, rgba(15,74,83,.14) 27% 27.7%, transparent 27.7% 34%, rgba(15,74,83,.28) 34% 34.8%, transparent 34.8% 45%, rgba(15,74,83,.12) 45% 45.5%, transparent 45.5% 54%, rgba(15,74,83,.22) 54% 54.8%, transparent 54.8% 63%, rgba(15,74,83,.1) 63% 63.5%, transparent 63.5% 71%, rgba(15,74,83,.3) 71% 71.8%, transparent 71.8% 100%);
  border-bottom: 1px dashed #d5dfde;
  opacity: .8;
}
.hero-network { position: absolute; right: 0; top: 2rem; width: 62%; height: 70%; }
.hero-network span {
  position: absolute; left: var(--x); top: var(--y); width: 8px; height: 8px; border-radius: 50%; background: #b7d2ce;
  transform: translate(-50%, -50%);
}
.hero-network span:nth-of-type(2n) { background: #d9e8e6; }
.hero-network span:nth-of-type(4), .hero-network span:nth-of-type(10) { background: #d9b36f; }
.hero-network i {
  position: absolute; left: var(--x1); top: var(--y1);
  width: calc(var(--x2) - var(--x1)); height: calc(var(--y2) - var(--y1));
  border-top: 1px solid #d7e5e3; transform-origin: 0 0;
  transform: rotate(0deg);
}
/* For arbitrary CSS vars with percentages, easier line approximation using fixed rotation hidden on small screens */
.hero-network i { display: none; }
.stats-strip {
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1rem; padding: 1rem 0 1.3rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stats-strip div { display: flex; align-items: center; gap: .7rem; }
.stats-strip strong { font-size: 1.1rem; font-family: Georgia, serif; }
.stats-strip span { color: var(--muted); }
.home-main-grid { display: grid; grid-template-columns: minmax(0,1.12fr) minmax(310px,.88fr); gap: 2rem; padding: 2rem 0 2.3rem; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-heading.simple { align-items: center; }
.section-heading.simple h2 { margin: 0; }
.home-panels { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.navigator-panel {
  padding: 1.35rem 1.35rem 1.25rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); min-height: 250px;
  display: flex; flex-direction: column; justify-content: space-between; box-shadow: var(--shadow);
}
.navigator-panel h3 { font-size: 2rem; margin-bottom: .35rem; }
.navigator-panel a { font-weight: 600; }
.strategies-panel { border-color: #ead7b6; background: linear-gradient(180deg,#fff 0,#fffaf0 100%); }
.tools-panel { background: linear-gradient(180deg,#fff 0,#f9fcfc 100%); }
.recent-panel {
  padding: 1.1rem 1.25rem; background: transparent; border-left: 1px solid var(--border);
}
.recent-group + .recent-group { margin-top: 1.25rem; }
.recent-group h3 { margin-bottom: .65rem; font-size: 1rem; font-family: Inter, sans-serif; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.recent-list { display: flex; flex-direction: column; }
.recent-list a {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: .9rem 0; border-top: 1px solid #e5eceb; color: inherit;
}
.recent-list a:first-child { border-top: 0; }
.recent-list strong { display: block; margin-bottom: .1rem; color: #17343b; }
.recent-list small { display: block; color: var(--muted); font-size: .92rem; }
.recent-list em { color: var(--muted); font-style: normal; white-space: nowrap; }
.contribution-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0 0 3rem;
}

.page-hero, .tool-hero {
  padding: 2.2rem 0 1.4rem; border-bottom: 1px solid var(--border); background: linear-gradient(180deg,#fcfbf8 0,#f8fbfb 100%);
}
.page-hero.compact { padding: 1.85rem 0 1.1rem; }
.page-hero h1, .tool-hero h1 { font-size: clamp(2rem, 4vw, 3.15rem); }
.tool-summary { max-width: 56rem; color: #335159; font-size: 1.08rem; }
.breadcrumbs { display: flex; gap: .5rem; align-items: center; font-size: .94rem; color: var(--muted); margin-bottom: .95rem; }
.breadcrumbs a { color: var(--muted); }
.tool-title-grid { display: flex; justify-content: space-between; gap: 2rem; align-items: start; }
.tool-actions { display: flex; gap: .65rem; flex-wrap: wrap; }
.title-acronym, .acronym { color: var(--muted); font-family: Inter, sans-serif; font-size: .75em; }
.badge-row { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .8rem; }
.badge {
  display: inline-flex; align-items: center; padding: .28rem .62rem; border-radius: 999px; background: var(--surface-soft); color: #38555d;
  border: 1px solid #d6e3e1; font-size: .87rem;
}
.badge-row.large .badge { font-size: .92rem; }
.strategy-detail-hero .badge { border-color: #ecd9bc; background: #fff8eb; }
.tool-page { display: grid; grid-template-columns: 280px minmax(0,1fr); gap: 2rem; padding: 2rem 0 3rem; }
.tool-facts { align-self: start; position: sticky; top: 98px; padding: 1.15rem 1.15rem 1rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.tool-facts h2 { font-size: 1.1rem; margin-bottom: .9rem; }
.tool-facts dl { margin: 0; }
.tool-facts dl > div { padding: .55rem 0; border-top: 1px solid #e9eeee; }
.tool-facts dl > div:first-child { border-top: 0; }
.tool-facts dt { font-size: .84rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: .18rem; }
.tool-facts dd { margin: 0; }
.source-box { margin-top: 1rem; padding-top: .9rem; border-top: 1px solid #e9eeee; }
.trust-stack { display: flex; flex-direction: column; gap: .35rem; margin: .55rem 0 .75rem; color: var(--muted); font-size: .93rem; }
.tool-article section { padding: 1.35rem 0; border-top: 1px solid #e5eceb; }
.tool-article section:first-child { border-top: 0; padding-top: 0; }
.capability-cloud, .availability-row {
  display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .85rem;
}
.capability-cloud span, .availability-row span {
  background: #f4f8f8; border: 1px solid var(--border); border-radius: 999px; padding: .42rem .72rem; font-size: .92rem;
}
.definition-grid, .scope-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .95rem 1.1rem; }
.definition-grid > div, .scope-grid > div {
  padding: 1rem 1rem .9rem; border: 1px solid var(--border); border-radius: 12px; background: #fff;
}
.definition-grid h3, .scope-grid h3 { font-size: 1rem; margin-bottom: .4rem; font-family: Inter, sans-serif; }
.link-list { display: grid; gap: .7rem; }
.link-list a, .related-grid a, .tool-use-card {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: .9rem 1rem; border: 1px solid var(--border); border-radius: 12px; background: #fff; color: inherit;
}
.related-grid, .tool-use-grid { display: grid; gap: .8rem; }
.related-grid a span, .tool-use-card span, .tool-use-card em { display: block; color: var(--muted); font-size: .93rem; }
.tool-use-card em { font-style: normal; margin-top: .4rem; }
.workflow-timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
.workflow-timeline li { display: grid; grid-template-columns: 46px 1fr; gap: 1rem; align-items: start; }
.step-number {
  display: inline-flex; width: 2.2rem; height: 2.2rem; align-items: center; justify-content: center; border-radius: 999px;
  background: var(--gold-soft); color: var(--gold); font-weight: 700; border: 1px solid #ead7b6;
}
.workflow-tools { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .55rem; }
.workflow-tools a, .workflow-tools span {
  display: inline-flex; padding: .32rem .62rem; border-radius: 999px; background: #f7faf9; border: 1px solid var(--border); font-size: .9rem;
}
.publication-list li { margin-bottom: .7rem; }

.catalogue-layout { display: grid; grid-template-columns: 270px minmax(0,1fr); gap: 1.5rem; padding: 2rem 0 3rem; }
.filter-panel {
  align-self: start; position: sticky; top: 98px; padding: 1rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow);
}
.filter-heading, .results-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.field-label { display: block; margin: .7rem 0 .35rem; font-size: .9rem; font-weight: 600; color: #28464f; }
.filter-panel input, .filter-panel select, .results-toolbar select {
  width: 100%; border: 1px solid #c9d8d6; background: #fff; border-radius: 10px; padding: .72rem .82rem; color: var(--text);
}
.link-button { background: none; border: 0; color: var(--teal); padding: 0; }
.catalogue-results { min-width: 0; }
.active-filters { display: flex; flex-wrap: wrap; gap: .45rem; margin: 0 0 1rem; }
.active-filters button {
  border: 1px solid var(--border); background: #fff; border-radius: 999px; padding: .38rem .65rem; color: var(--muted);
}
.tool-grid { display: grid; gap: .35rem; }
.tool-card {
  background: transparent; border: 1px solid transparent; border-bottom: 1px solid #dde7e6; border-radius: 0; padding: 1.15rem 0;
}
.tool-card:hover { background: rgba(255,255,255,.55); }
.tool-card-top, .tool-card-footer { display: flex; align-items: start; justify-content: space-between; gap: 1rem; }
.tool-kicker { margin-bottom: .3rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 700; }
.capability-line { color: #415b62; margin-bottom: .7rem; }
.tool-card-footer { align-items: center; color: var(--muted); font-size: .92rem; margin-top: .75rem; }
.empty-state { padding: 2rem 1rem; border: 1px dashed var(--border); border-radius: 12px; background: #fff; }

.browse-sections, .submission-choices, .process-section, .prose { padding: 2rem 0 3rem; }
.browse-sections { display: grid; gap: 1.5rem; }
.browse-section { padding-bottom: .5rem; border-bottom: 1px solid var(--border); }
.browse-list { display: grid; gap: .45rem; }
.browse-list a {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: .8rem 0; border-top: 1px solid #e7efee; color: inherit;
}
.submission-choices { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.submission-choice {
  padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow);
}
.strategy-choice { border-color: #ead7b6; background: linear-gradient(180deg,#fff 0,#fffbf3 100%); }
.process-list { display: grid; gap: .75rem; padding-left: 1.2rem; }
.process-list li span { display: block; color: var(--muted); }
.prose { max-width: 820px; }
.site-footer { border-top: 1px solid var(--border); background: #f7faf9; padding-top: 1.4rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 1.5rem; padding-bottom: 1.2rem; }
.site-footer h2 { font-size: 1rem; font-family: Inter, sans-serif; margin-bottom: .55rem; }
.site-footer a { display: block; color: var(--muted); margin-bottom: .35rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0 1.35rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }

@media (max-width: 1024px) {
  .home-hero-grid, .home-main-grid, .catalogue-layout, .tool-page, .footer-grid { grid-template-columns: 1fr; }
  .hero-visual, .recent-panel { border-left: 0; padding-left: 0; }
  .tool-facts, .filter-panel { position: static; }
}
@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    display: none; position: absolute; top: 76px; right: 1rem; left: 1rem; padding: 1rem; background: #fff; border: 1px solid var(--border);
    border-radius: 16px; box-shadow: var(--shadow); flex-direction: column; align-items: stretch;
  }
  .main-nav.open { display: flex; }
  .brand-text strong { font-size: 1.5rem; }
  .stats-strip, .home-panels, .submission-choices, .definition-grid, .scope-grid { grid-template-columns: 1fr; }
  .tool-title-grid, .contribution-bar, .footer-bottom { flex-direction: column; align-items: start; }
  .header-inner { min-height: 76px; }
  .action-links a:not(:last-child)::after { display: none; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  .section-wrap { width: min(var(--wrap), calc(100% - 1.2rem)); }
  .search-row { flex-direction: column; border-radius: 14px; }
  .search-row button { width: 100%; border-radius: 0 0 14px 14px; }
  .brand-logo { width: 76px; }
  .brand-text small { display: none; }
  .home-hero { padding-top: 2rem; }
  .stats-strip { gap: .5rem; }
  .stats-strip div { padding: .45rem 0; border-bottom: 1px solid #e8efee; }
}

/* v5.1 refinement: tighter scale, functional search scope, scientific spectrum visual */
.header-inner { min-height: 72px; }
.brand-logo { width: 82px; height: 36px; }
.brand-text strong { font-size: 1.72rem; }
.brand-text small { font-size: .76rem; color: #74868b; }
.main-nav { gap: 1.15rem; }
.main-nav .nav-submit { padding: .48rem .86rem; }

.home-hero { padding: 2.25rem 0 1.15rem; }
.home-hero-grid { grid-template-columns: minmax(0, 1.14fr) minmax(250px, .72fr); gap: 1.7rem; }
.home-hero h1 { font-size: clamp(2.55rem, 4.3vw, 3.45rem); max-width: 760px; }
.home-hero .hero-copy { font-size: 1.08rem; margin-bottom: 1.1rem; }
.home-search { max-width: 760px; }
.search-row input { padding: .82rem 1rem; }
.search-row button { min-width: 108px; padding: .78rem 1rem; }
.search-tabs { margin-top: .7rem; }
.search-tabs button {
  appearance: none; border: 0; background: transparent; color: var(--muted); padding: .38rem .9rem;
  border-radius: 999px; font-size: .92rem; cursor: pointer;
}
.search-tabs button.active { background: var(--teal); color: #fff; }
.search-tabs button:focus-visible { outline: 2px solid #6da59c; outline-offset: 2px; }
.action-links { margin-top: 1rem; padding-top: .8rem; }
.hero-visual { min-height: 235px; padding-left: 1rem; }
.spectrum-illustration { width: 100%; height: 235px; opacity: .84; }
.spectrum-axis { stroke: #cfdedd; stroke-width: 1.2; }
.spectrum-peaks line { stroke: #89aaa8; stroke-width: 2.1; stroke-linecap: round; }
.spectrum-peaks line:nth-child(5n+2), .spectrum-peaks line:nth-child(7n) { stroke: #b7c9c7; }
.spectrum-peaks line:nth-child(11), .spectrum-peaks line:nth-child(15) { stroke: #6f9995; stroke-width: 2.6; }
.spectrum-label { font: 12px Inter, sans-serif; fill: #7d9195; }
.molecular-network line { stroke: #c4d8d5; stroke-width: 1.6; }
.molecular-network circle { fill: #8fb8b1; }
.molecular-network circle.gold { fill: #cf9a42; }

.tool-hero { padding: 1.5rem 0 1.1rem; }
.tool-hero h1 { font-size: clamp(2rem, 3.6vw, 3rem); margin-bottom: .35rem; }
.strategy-detail-hero h1 { font-size: clamp(2rem, 3.15vw, 2.7rem); max-width: 980px; }
.tool-hero .breadcrumbs { margin-bottom: .7rem; }
.tool-hero .eyebrow { margin-bottom: .45rem; }
.tool-hero .tool-summary { font-size: 1.02rem; margin-bottom: .55rem; }
.tool-title-grid { align-items: center; }
.tool-actions { flex-direction: column; min-width: 180px; }
.tool-actions .button { width: 100%; }
.badge-row.large { margin-top: .55rem; }
.strategy-citation-line { margin: .25rem 0 .55rem; color: var(--muted); font-size: .93rem; }
.strategy-citation-line a { color: var(--muted); text-decoration: underline; text-decoration-color: #b9c7c5; }

@media (max-width: 820px) {
  .header-inner { min-height: 68px; }
  .brand-logo { width: 74px; }
  .brand-text strong { font-size: 1.42rem; }
  .home-hero h1 { font-size: clamp(2.35rem, 11vw, 3.1rem); }
  .hero-visual { min-height: 180px; }
  .spectrum-illustration { height: 180px; }
  .tool-title-grid { align-items: start; }
  .tool-actions { flex-direction: row; min-width: 0; }
  .tool-actions .button { width: auto; }
}

@media (max-width: 640px) {
  .brand-text strong { font-size: 1.25rem; }
  .home-hero { padding-top: 1.65rem; }
  .hero-visual { display: none; }
  .tool-actions { width: 100%; }
  .tool-actions .button { flex: 1; }
}

/* Navigator: an editorial reference surface with a compact discovery index. */
:root { --bg: #ffffff; --text: #253b40; --muted: #56696c; --border: #dce4e1; --shadow: none; }
body { font-size: 1rem; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #99701c; outline-offset: 4px; }
html { scroll-padding-top: 7rem; }
h1,h2,h3 { font-weight: 500; text-wrap: balance; }
a,button,input,select { -webkit-tap-highlight-color: transparent; }
.site-header { background: #ffffff; border-top: 4px solid var(--teal); backdrop-filter: none; }
.header-inner { min-height: 88px; }
.brand-text strong { font-size: 1.65rem; }
.brand-text .accent { color: var(--teal); }
.brand-text small { font-size: .8125rem; color: var(--muted); }
.main-nav a { padding: .7rem .1rem; }
.main-nav a[aria-current=page] { box-shadow: inset 0 -2px var(--teal); }
.main-nav .nav-submit { border-radius: 4px; border-color: var(--teal); color: var(--teal); padding: .55rem 1rem; }
.home-hero { padding: 2.5rem 0 1.8rem; }
.home-hero-grid { grid-template-columns: minmax(0,1.5fr) minmax(280px,1fr); gap: 4rem; align-items: start; }
.home-hero h1 { font-size: clamp(2.35rem,3.8vw,3.35rem); line-height: 1.12; letter-spacing: -.035em; }
.home-hero h1 em { color: #527369; font-weight: 400; }
.home-hero .hero-copy { max-width: 37rem; margin: 1.1rem 0 1.35rem; }
.eyebrow, .tool-kicker { font-size: .8125rem; letter-spacing: .09em; }
.search-row,.search-row button,.button,.filter-panel input,.filter-panel select,.results-toolbar select { border-radius: 4px; box-shadow: none; }
.search-row { border-color: #91a9a2; }
.search-row input { padding: 1rem; }
.search-tabs button { border-radius: 3px; }
.action-links { flex-wrap: wrap; }
.stats-strip { border-top: 1px solid var(--teal); border-bottom: 1px solid var(--border); padding: 1rem 0; }
.stats-strip strong { font-size: 1.35rem; }
.home-main-grid { padding-top: 2.4rem; gap: 3rem; }
.navigator-panel { background: transparent; padding: 1.25rem 0; border: 0; border-top: 2px solid var(--teal); border-radius: 0; min-height: 235px; }
.strategies-panel { border-top-color: var(--gold); }
.recent-panel { padding-top: 0; }
.recent-list em { font-size: .8125rem; }
.page-hero,.tool-hero { background: #f0f5f2; }
.page-hero.compact { padding: 2rem 0 1.25rem; }
.page-hero p { max-width: 54rem; }
.catalogue-layout { gap: 2.75rem; grid-template-columns: 265px minmax(0,1fr); }
.filter-panel { border: 0; border-top: 2px solid var(--teal); background: transparent; padding: 1rem 0; border-radius: 0; position: static; }
.filter-heading h2 { font-size: 1.5rem; }
.results-toolbar { padding-bottom: 1rem; border-bottom: 2px solid var(--teal); flex-wrap: wrap; }
.results-toolbar p { margin: 0; }
.results-toolbar label { display: flex; align-items: center; gap: .6rem; font-size: .875rem; }
.tool-grid { gap: 0; }
.tool-card { padding: 1.5rem 1rem; transition: background-color .15s; }
.tool-card:hover,.tool-card:focus-within { background: #f0f5f2; }
.tool-card h2 { font-size: 1.75rem; margin-bottom: .35rem; overflow-wrap: anywhere; }
.tool-card > p { max-width: 65ch; }
.tool-card-footer { gap: .5rem; flex-wrap: wrap; font-size: .875rem; }
.tool-card-footer > a { white-space: nowrap; font-weight: 600; }
.badge { border-radius: 3px; font-size: .875rem; background: #f1f5f3; padding: .2rem .5rem; }
.capability-line { font-size: .875rem; }
.tool-page { gap: 3.5rem; grid-template-columns: 250px minmax(0,1fr); }
.tool-facts { position: static; border: 0; border-top: 2px solid var(--teal); border-radius: 0; padding: 1rem 0; background: transparent; }
.tool-facts h2 { font-size: 1.4rem; }
.tool-facts dt { font-size: .8125rem; }
.tool-article { min-width: 0; }
.tool-article section { padding: 1.8rem 0; scroll-margin-top: 7rem; }
.tool-article section > p { max-width: 75ch; }
.tool-article h2 { font-size: 1.85rem; }
.definition-grid > div,.scope-grid > div { border: 0; border-left: 2px solid var(--border); background: transparent; border-radius: 0; padding: .4rem 1rem; }
.scope-grid ul { padding-left: 1rem; margin-left: 0; }
.scope-grid li { margin-bottom: .55rem; }
.capability-cloud span { border-radius: 3px; }
.link-list a,.related-grid a { border-radius: 3px; }
.related-grid a { grid-template-columns: 1fr; gap: .3rem; }
.tool-title-grid > div:first-child { min-width: 0; }
.tool-hero h1 { overflow-wrap: anywhere; }
.breadcrumbs { flex-wrap: wrap; }
.site-footer { background: #f4f7f5; border-top: 1px solid #d3ded8; }
.footer-bottom { font-size: .8125rem; }
@media(max-width: 960px) {
  .home-hero-grid { gap: 2rem; }
  .catalogue-layout { gap: 1.5rem; grid-template-columns: 230px minmax(0,1fr); }
  .tool-page { gap: 2rem; grid-template-columns: 220px minmax(0,1fr); }
  .brand-text small { display: none; }
}
@media(max-width: 820px) {
  .header-inner { min-height: 72px; }
  .home-hero-grid,.home-main-grid,.catalogue-layout,.tool-page { grid-template-columns: 1fr; }
  .main-nav { background: var(--bg); }
  .filter-panel { display: grid; grid-template-columns: 1fr 1fr; column-gap: 1rem; }
  .filter-heading { grid-column: 1 / -1; }
  .filter-panel .field-label { align-self: center; }
  .filter-panel input,.filter-panel select { margin-bottom: .5rem; }
  .tool-facts dl { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
  .tool-actions { flex-wrap: wrap; }
  .recent-panel { border-left: 0; padding-left: 0; }
  .brand-text strong { font-size: 1.35rem; }
}
@media(max-width: 480px) {
  .section-wrap { width: calc(100% - 2rem); }
  .brand-logo { width: 48px; }
  .brand { gap: .4rem; }
  .brand-text strong { font-size: 1.05rem; }
  .nav-toggle { padding: .5rem; border-radius: 3px; }
  .home-hero { padding-top: 1.5rem; }
  .search-row button { border-radius: 0; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .stats-strip div { flex-wrap: wrap; gap: .2rem .5rem; }
  .tool-card { padding: 1.3rem 0; }
  .definition-grid,.scope-grid { grid-template-columns: 1fr; }
  .tool-facts dl { grid-template-columns: 1fr; }
  .results-toolbar label { width: 100%; }
}
@media(prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition: none !important; animation: none !important; }
}

.entry-nav { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; padding: 0 0 1.2rem; border-bottom: 1px solid var(--border); font-size: .875rem; }
.entry-nav > span { width: 100%; font-weight: 600; color: var(--muted); }
.entry-nav a { padding: .2rem 0; }
.review-note { border-left: 3px solid var(--teal); padding: .8rem 1rem; background: #eef4f0; font-size: .9375rem; }
.preprint-badge { color: #70501b; background: #faf0d9; margin-bottom: .4rem; }
.publication-list { padding-left: 1.2rem; margin-left: 0; overflow-wrap: anywhere; }
.active-filters button { border-radius: 3px; font-size: .875rem; color: var(--teal); }
/* Community review: content, stable anchors, and plain navigation. */
.review-layout { display: grid; grid-template-columns: 220px minmax(0, 810px); gap: 4rem; padding: 3rem 0 5rem; justify-content: center; }
.review-contents { align-self: start; position: sticky; top: 115px; font-size: .9375rem; }
.review-contents h2 { font-family: inherit; font-size: .875rem; font-weight: 650; margin-bottom: 1rem; color: var(--teal); }
.review-contents nav a,.contents-links a { display: block; padding: .5rem 0; color: var(--muted); line-height: 1.45; }
.review-contents a:hover { color: var(--teal); }
.contents-links { border-top: 1px solid var(--border); margin-top: 1rem; padding-top: .8rem; }
.review-body { min-width: 0; font-size: 1.0625rem; line-height: 1.75; }
.review-intro h1 { font-size: clamp(2.1rem,3.4vw,3.15rem); margin-bottom: .75rem; letter-spacing: -.035em; line-height: 1.08; }
.review-lead { font-size: 1.2rem; color: #45625b; line-height: 1.5; margin-bottom: 1.4rem; }
.review-body p { max-width: 75ch; }
.review-search { margin: 1.5rem 0 .65rem; }
.review-search label { display: block; font-weight: 600; margin-bottom: .5rem; }
.review-meta { font-size: .875rem; color: var(--muted); }
.review-section { border-top: 1px solid #bfcfc7; padding-top: 2rem; margin-top: 2.6rem; scroll-margin-top: 7rem; }
.review-section h2 { font-size: clamp(1.65rem,2.2vw,2rem); letter-spacing: -.02em; margin-bottom: .8rem; }
.selection-question { color: var(--muted); }
.review-tool-list { margin: 1rem 0 0; padding: 0; list-style: none; }
.review-tool-list li { display: grid; grid-template-columns: 150px minmax(0,1fr); gap: 1.2rem; padding: 1rem 0; border-top: 1px solid #e2e8e4; align-items: baseline; }
.review-tool-list a { font-weight: 650; text-decoration: underline; text-decoration-color: #a9bfb6; text-decoration-thickness: 1px; text-underline-offset: 4px; overflow-wrap: anywhere; }
.review-tool-list span { display: block; font-size: 1rem; line-height: 1.65; color: #42575c; }
.main-nav .nav-submit { border: 0; padding: .7rem .1rem; }
.site-header { border-top-width: 2px; }
.brand-text strong { font-size: 1.5rem; }
.page-hero,.tool-hero { background: var(--bg); }
.tool-hero .eyebrow,.tool-kicker { text-transform: none; letter-spacing: 0; font-size: .875rem; font-weight: 500; }
.capability-cloud { gap: .4rem 1rem; }
.capability-cloud span { border: 0; padding: .15rem 0; background: transparent; }
.tool-facts dt { text-transform: none; letter-spacing: 0; font-size: .875rem; }
.entry-nav { border-bottom: 0; }
@media(max-width: 960px) { .review-layout { grid-template-columns: 185px minmax(0,1fr); gap: 2rem; } }
@media(max-width: 820px) {
  .review-layout { display: flex; flex-direction: column; gap: 1.5rem; padding-top: 1.5rem; }
  .review-contents { position: static; width: 100%; }
  .review-contents nav { display: flex; flex-wrap: wrap; gap: .2rem 1rem; }
  .review-contents h2 { width: 100%; margin-bottom: .3rem; }
  .review-contents nav a { font-size: .875rem; }
  .contents-links { display: none; }
  .review-section { scroll-margin-top: 6rem; }
}
@media(max-width: 480px) { .brand-text strong { font-size: 1.05rem; } }

/* Reading detail shared by the guide, catalogue and reference entries. */
.review-contents nav { border-left: 1px solid var(--border); padding-left: 1.2rem; }
.review-contents nav a:hover { text-decoration-color: #879e93; text-underline-offset: 4px; }
.review-search { padding-top: .3rem; }
.review-search label { font-size: .9375rem; }
.review-search .search-row { border: 1px solid #a7bcb2; border-radius: 5px; }
.search-row:focus-within { outline: 2px solid var(--teal); outline-offset: 3px; }
.review-search input { font-size: 1rem; padding: .95rem 1rem; }
.review-meta { margin-top: .85rem; }
.review-meta a { color: var(--muted); text-underline-offset: 3px; }
.selection-question { border-left: 2px solid #c3d2ca; padding-left: 1rem; font-size: 1rem; }
.selection-question strong { color: var(--text); font-weight: 600; }
.review-tool-list a:hover { color: #123e32; text-decoration-color: currentColor; }
.tool-article { font-size: 1.0625rem; line-height: 1.75; }
.tool-article h2 { letter-spacing: -.02em; }
.tool-article .definition-grid,.tool-article .scope-grid { font-size: 1rem; line-height: 1.65; }
.tool-card h2 a { text-underline-offset: 4px; }
.tool-card:hover,.tool-card:focus-within { background: #f7faf8; }
.tool-facts { font-size: .9375rem; }
.tool-facts dl > div { padding: .7rem 0; }
.tool-facts dd { color: #27483f; }
.main-nav a:hover { text-decoration-thickness: 1px; text-underline-offset: 6px; }
.link-list a:hover,.related-grid a:hover { border-color: #8fa99b; background: #f8faf9; }
@media(max-width: 820px) {
  .review-contents nav { padding-left: 0; border-left: 0; border-bottom: 1px solid var(--border); padding-bottom: 1rem; }
  .review-body,.tool-article { font-size: 1rem; }
  .review-section { margin-top: 2rem; padding-top: 1.6rem; }
}
@media(max-width: 560px) {
  .review-tool-list li { grid-template-columns: 1fr; gap: .25rem; padding: .9rem 0; }
  .review-intro h1 { overflow-wrap: anywhere; }
}

/* Compact visual index: icons identify tasks; full context stays expandable. */
.visual-guide { padding-top: 2rem; gap: 3rem; }
.visual-guide .review-intro h1 { font-size: clamp(2rem,3vw,2.8rem); }
.visual-guide .review-lead { font-size: 1.0625rem; margin-bottom: 1rem; }
.visual-guide .review-search { margin: 1rem 0 .65rem; }
.visual-guide .review-meta { display: flex; flex-wrap: wrap; gap: .35rem 1.25rem; }
.topic-icon,.card-arrow { display: block; width: 18px; height: 18px; min-width: 18px; max-width: 18px; flex: 0 0 18px; }
.topic-icon circle { fill: var(--bg); }
.review-contents nav .topic-nav-link { display: flex; gap: .8rem; align-items: center; padding: .65rem 0; }
.topic-nav-link .topic-icon { width: 18px; height: 18px; color: #416b5c; }
.visual-topic { margin-top: 1.8rem; padding-top: 1.5rem; }
.topic-heading { display: grid; grid-template-columns: 30px minmax(0,1fr) auto; align-items: start; column-gap: .75rem; margin-bottom: 1rem; }
.topic-icon-box { display: grid; place-items: center; width: 30px; height: 30px; background: #edf3ef; color: #295a47; border-radius: 5px; }
.topic-heading h2 { font-size: 1.4rem; margin: 0 0 .15rem; }
.topic-heading p { margin: 0; font-size: .9375rem; color: var(--muted); line-height: 1.5; }
.topic-count { margin-left: auto; color: var(--muted); font-size: .875rem; font-variant-numeric: tabular-nums; }
.navigator-cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .65rem; list-style: none; padding: 0; margin: 0; }
.navigator-cards li { min-width: 0; }
.navigator-cards a { display: block; height: 100%; padding: .9rem 1rem; border: 1px solid #dce5df; border-radius: 6px; background: #fff; transition: border-color .15s, background-color .15s; }
.navigator-cards a:hover,.navigator-cards a:focus-visible { text-decoration: none; background: #f5f9f6; border-color: #829f8e; }
.navigator-card-name { display: flex; align-items: center; gap: .75rem; justify-content: space-between; color: #173f31; font-size: 1rem; font-weight: 650; line-height: 1.4; overflow-wrap: anywhere; }
.navigator-card-name > .card-arrow { color: #647d70; }
.navigator-card-role { display: block; margin-top: .2rem; color: var(--muted); font-size: .875rem; line-height: 1.5; }
.topic-context { margin-top: .85rem; font-size: .9375rem; }
details summary { cursor: pointer; color: #4c6458; font-size: .875rem; padding: .4rem 0; width: fit-content; }
details[open] summary { margin-bottom: .6rem; }
.topic-context[open] { border-left: 2px solid #c5d6ca; padding-left: 1rem; }
.compact-contribution { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; }
.compact-contribution h2 { font-size: 1.5rem; margin-bottom: .4rem; }
.compact-contribution p { font-size: .9375rem; }
.compact-contribution details { width: 100%; }
@media(max-width: 820px) {
  .visual-guide { gap: 1rem; }
  .visual-guide .review-contents nav { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .15rem .65rem; }
  .visual-guide .review-contents h2 { grid-column: 1/-1; }
  .review-contents nav .topic-nav-link { gap: .4rem; font-size: .8125rem; line-height: 1.4; }
}
@media(max-width: 560px) {
  .navigator-cards { grid-template-columns: 1fr; }
  .visual-guide .review-contents nav { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .topic-heading h2 { font-size: 1.25rem; }
  .topic-icon-box { width: 30px; height: 30px; }
  .topic-count { display: none; }
}

/* Fixed icon metrics and aligned reading surfaces at every breakpoint. */
.brand-logo { width: 60px; height: 26px; flex: 0 0 60px; }
.brand { gap: .7rem; }
.topic-heading h2 { line-height: 1.35; }
.topic-heading p { margin-top: .2rem; }
.topic-count { line-height: 30px; }
.review-contents nav .topic-nav-link { min-height: 42px; gap: .65rem; }
.navigator-cards a { padding: .85rem 1rem; }
.navigator-card-role { margin-top: .35rem; }
.topic-context { margin-top: .65rem; }
.visual-topic { padding-top: 1.4rem; margin-top: 1.65rem; }
@media(max-width: 480px) {
  .brand-logo { width: 44px; height: 20px; flex-basis: 44px; }
  .brand { gap: .45rem; }
  .topic-heading { column-gap: .65rem; }
}

/* Metabolomics Navigator: a quiet, task-first scientific reference. */
:root { --bg: #f6f8fb; --text: #183246; --muted: #596c7c; --teal: #175970; }
body { background: var(--bg); color: var(--text); }
.site-header { background: #102c40; border-bottom: 1px solid #29485c; color: #fff; }
.site-header a,.site-header .brand-text strong,.site-header .brand-text span { color: #f4f8fb; }
.site-header .main-nav a { color: #d5e2eb; }
.site-header .main-nav a:hover,.site-header .main-nav a[aria-current="page"] { color: #fff; background: #213e52; }
.site-header .main-nav .nav-submit { border: 1px solid #627b8d; border-radius: 5px; padding: .55rem .8rem; }
.brand-text strong { font-size: 1.2rem; letter-spacing: -.025em; }
.site-header .brand-text small { color: #adc3d2; }
.site-header .brand-chrom { stroke: #a6ccdf; }
.site-header .brand-network circle { fill: #a6ccdf; }
.site-header .main-nav a { padding: .4rem .55rem; border-radius: 4px; }
.site-header .main-nav { gap: .45rem; }
.section-wrap { max-width: 1180px; }
.navigator-entrance { padding-top: clamp(2rem,5vw,4.5rem); padding-bottom: 3rem; }
.entrance-header { margin-bottom: 2rem; }
.entrance-header .eyebrow { color: #527087; font-size: .7rem; letter-spacing: .16em; margin-bottom: .65rem; }
.entrance-header h1 { font-family: inherit; font-weight: 550; letter-spacing: -.045em; font-size: clamp(2rem,4vw,3.2rem); margin: 0; line-height: 1.15; }
.category-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; }
.category-card { display: flex; flex-direction: column; min-width: 0; padding: 1.5rem; border: 1px solid #dce4ec; border-radius: 8px; background: #fff; color: var(--text); box-shadow: 0 2px 4px #102c4003; transition: border-color .15s,box-shadow .15s; }
.category-card:hover { text-decoration: none; border-color: #7895aa; box-shadow: 0 5px 18px #102c400a; }
.category-card:focus-visible { outline: 3px solid #327caa; outline-offset: 3px; }
.category-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.category-icon { display: inline-grid; place-items: center; width: 40px; height: 40px; flex: 0 0 40px; background: #eef4f8; border-radius: 7px; color: #285c79; }
.category-icon .topic-icon { width: 22px; height: 22px; min-width: 22px; max-width: 22px; }
.category-icon .topic-icon circle { fill: #eef4f8; }
.category-number { color: #8395a4; font-size: .75rem; font-variant-numeric: tabular-nums; }
.category-card h2 { font-family: inherit; font-size: 1.12rem; font-weight: 650; letter-spacing: -.02em; margin: 0 0 .4rem; line-height: 1.4; }
.category-card p { margin: 0 0 1.6rem; font-size: .9rem; color: var(--muted); line-height: 1.6; }
.category-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: .8rem; border-top: 1px solid #edf1f5; color: #577185; font-size: .75rem; }
.category-bottom svg { flex: 0 0 18px; width: 18px; height: 18px; }
.entrance-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: 1.25rem; padding-bottom: 2rem; border-top: 1px solid #dce4ec; color: #677d8c; font-size: .78rem; }
.entrance-footer nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.category-layout { display: grid; grid-template-columns: 220px minmax(0,1fr); gap: 3.5rem; padding-top: 2.5rem; padding-bottom: 4rem; }
.category-sidebar h2 { font-family: inherit; font-size: .8rem; margin: 0 0 1rem; }
.category-sidebar nav a { display: flex; align-items: center; gap: .7rem; padding: .75rem .6rem; font-size: .85rem; color: #526b7c; border-radius: 5px; }
.category-sidebar nav a[aria-current="page"] { background: #e6eef5; color: #163e58; font-weight: 650; }
.all-tools-link { display: block; font-size: .8rem; margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px solid #dce4ec; }
.category-intro { margin-top: 1.75rem; }
.category-intro h1 { font-family: inherit; letter-spacing: -.035em; font-size: clamp(1.8rem,3vw,2.6rem); margin: 1rem 0 .5rem; }
.category-intro p { color: var(--muted); }
.category-guidance { border-bottom: 1px solid #dce4ec; padding: .5rem 0 1rem; font-size: .92rem; }
.category-guidance summary { color: #285c79; }
.category-list-heading { display: flex; justify-content: space-between; align-items: center; margin: 2rem 0 1rem; }
.category-list-heading h2 { font-family: inherit; font-size: 1rem; margin: 0; }
.category-list-heading > span { font-size: .8rem; color: var(--muted); }
.category-resources { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
.category-resources li > a { display: block; padding: 1.25rem 1.5rem; background: #fff; border: 1px solid #dce4ec; border-radius: 7px; color: var(--text); }
.category-resources li > a:hover { border-color: #7895aa; text-decoration: none; }
.resource-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.resource-heading h3 { font-family: inherit; font-size: 1.08rem; margin: 0; }
.resource-access { color: #688092; font-size: .73rem; }
.category-resources p { font-size: .9rem; margin: .55rem 0 .9rem; color: var(--muted); }
.resource-bottom { display: flex; justify-content: space-between; color: #426c87; font-size: .78rem; }
@media(max-width: 900px) { .category-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .category-layout { grid-template-columns: 180px minmax(0,1fr); gap: 2rem; } }
@media(max-width: 680px) {
 .site-header .main-nav { background: #102c40; }
 .category-layout { display: block; padding-top: 1.5rem; }
 .category-sidebar nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
 .category-sidebar h2 { grid-column: 1/-1; }
 .category-sidebar nav a { font-size: .78rem; }
 .category-content { margin-top: 2rem; }
 .entrance-footer { align-items: flex-start; flex-direction: column; }
 .resource-access { display: none; }
}
@media(max-width: 480px) { .category-grid { grid-template-columns: 1fr; gap: .75rem; } .category-card { padding: 1.15rem; } .category-top { margin-bottom: .75rem; } .category-card p { margin-bottom: 1rem; } }

/* Homepage: a focused front door; catalogue detail lives one layer deeper. */
.navigator-entrance { max-width: 1040px; padding-top: clamp(2.6rem,7vw,5.8rem); padding-bottom: 3.5rem; }
.entrance-header { max-width: 680px; margin: 0 auto 2rem; text-align: center; }
.entrance-header .eyebrow { color: #527087; font-size: .68rem; letter-spacing: .17em; margin-bottom: .75rem; }
.entrance-header h1 { font-size: clamp(2.3rem,5vw,4rem); letter-spacing: -.055em; }
.entrance-lead { max-width: 520px; margin: .85rem auto 0; color: #627889; font-size: 1.03rem; line-height: 1.55; }
.home-search { max-width: 720px; margin: 0 auto 2.75rem; }
.home-search label { display: block; margin-bottom: .5rem; color: #496477; font-size: .78rem; font-weight: 650; letter-spacing: .02em; }
.home-search-row { display: flex; border: 1px solid #a8bbc8; border-radius: 7px; background: #fff; box-shadow: 0 5px 20px #102c400b; overflow: hidden; }
.home-search-row:focus-within { outline: 3px solid #b7d4e3; outline-offset: 2px; border-color: #327caa; }
.home-search input { min-width: 0; flex: 1; border: 0; padding: .92rem 1rem; color: var(--text); background: transparent; font: inherit; }
.home-search input:focus { outline: 0; }
.home-search button { border: 0; border-left: 1px solid #d7e2e9; padding: 0 1.15rem; color: #fff; background: #175970; font: inherit; font-size: .88rem; font-weight: 650; cursor: pointer; }
.home-search button:hover { background: #12485d; }
.home-section-label { display: flex; align-items: center; gap: .85rem; margin-bottom: .8rem; color: #496477; font-size: .78rem; font-weight: 650; letter-spacing: .02em; }
.home-section-label span:last-child { height: 1px; flex: 1; background: #d5e0e7; }
.category-grid { gap: .8rem; }
.category-card { min-height: 152px; align-items: flex-start; padding: 1.35rem 1.4rem 1.1rem; }
.category-card .category-icon { width: 44px; height: 44px; flex-basis: 44px; margin-bottom: 1.15rem; border: 1px solid #d8e5ec; border-radius: 8px; }
.category-card .category-icon .topic-icon { width: 21px; height: 21px; }
.category-card h2 { margin: 0; font-size: 1.02rem; }
.category-bottom { align-self: flex-end; margin-top: auto; padding-top: .3rem; border-top: 0; color: #6b8493; }
.category-bottom svg { width: 16px; height: 16px; }
.home-contribute { display: grid; grid-template-columns: minmax(200px,.8fr) minmax(0,1.6fr); gap: 2rem; align-items: center; margin-top: 3.4rem; padding: 1.4rem 0 0; border-top: 1px solid #d5e0e7; }
.home-contribute .eyebrow { margin: 0 0 .4rem; color: #6b8493; font-size: .64rem; letter-spacing: .14em; }
.home-contribute h2 { margin: 0; font-size: 1.25rem; letter-spacing: -.025em; }
.contribute-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .7rem; }
.contribute-links a { display: grid; grid-template-columns: 30px minmax(0,1fr) 16px; gap: .7rem; align-items: center; padding: .78rem .85rem; border: 1px solid #d5e1e8; border-radius: 6px; background: #fff; color: var(--text); }
.contribute-links a:hover { border-color: #7895aa; background: #f9fbfc; text-decoration: none; }
.contribute-icon { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; color: #175970; background: #e8f1f5; font-size: 1.1rem; }
.contribute-links strong,.contribute-links small { display: block; }
.contribute-links strong { font-size: .82rem; }
.contribute-links small { margin-top: .15rem; color: #6b7f8c; font-size: .72rem; line-height: 1.3; }
.entrance-footer { justify-content: center; padding-top: 0; border-top: 0; color: #8293a0; }
@media(max-width: 760px) { .home-contribute { grid-template-columns: 1fr; gap: 1rem; } }
@media(max-width: 560px) { .category-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .category-card { min-height: 138px; padding: 1rem; } .category-card .category-icon { width: 40px; height: 40px; flex-basis: 40px; margin-bottom: .8rem; } .contribute-links { grid-template-columns: 1fr; } }
@media(max-width: 390px) { .category-grid { grid-template-columns: 1fr; } }