:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #596775;
  --line: #d6dee6;
  --paper: #ffffff;
  --wash: #f7f9fb;
  --teal: #2f7f76;
  --teal-soft: #e8f3f1;
  --amber: #b77912;
  --amber-soft: #fff2d8;
  --blue: #315f8a;
  --blue-soft: #e6eef7;
  --coral: #b55238;
  --coral-soft: #fde8e1;
  --shadow: 0 12px 34px rgba(23, 33, 43, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--wash);
  line-height: 1.55;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: var(--blue);
}

img {
  max-width: 100%;
  display: block;
}

.hero {
  background:
    linear-gradient(135deg, rgba(232, 243, 241, 0.92), rgba(255, 242, 216, 0.82)),
    var(--wash);
  border-bottom: 1px solid var(--line);
}

.topbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px clamp(20px, 4vw, 60px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-button,
.mobile-menu-toggle,
.primary-action,
.secondary-action,
.clear-filters,
.search-result-card button,
.path-card button,
.mobile-nav-sheet button {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  min-height: 44px;
  border-radius: 8px;
  padding: 10px 14px;
}

.nav-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.search-result-card button {
  align-self: start;
  min-width: 70px;
}

.nav-button.is-active {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: #143f3a;
}

.ui-icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  flex: 0 0 auto;
}

.mobile-menu-toggle {
  display: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 1.05fr);
  gap: clamp(24px, 5vw, 68px);
  padding: clamp(32px, 7vw, 88px) clamp(20px, 4vw, 60px) clamp(34px, 6vw, 70px);
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(42px, 6vw, 74px);
  line-height: 1.03;
  margin: 0 0 20px;
  letter-spacing: 0;
}

.hero-copy p {
  font-size: clamp(18px, 2vw, 22px);
  max-width: 760px;
  color: #2f3b46;
}

.kicker,
.card-kicker,
.result-meta {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.primary-action {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.secondary-action {
  background: rgba(255, 255, 255, 0.72);
}

.hero-visual {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

main {
  position: relative;
}

.section-rail {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px clamp(20px, 4vw, 60px);
  background: rgba(247, 249, 251, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.section-rail .nav-button {
  min-width: max-content;
}

.global-search,
.view,
.site-footer {
  padding: clamp(36px, 6vw, 82px) clamp(20px, 4vw, 60px);
}

.global-search {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 920px;
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.08;
  margin: 0 0 14px;
  letter-spacing: 0;
}

.section-head p {
  color: var(--muted);
  font-size: 18px;
}

.section-head--compact h2 {
  font-size: clamp(24px, 3vw, 34px);
}

.global-search__controls {
  display: grid;
  grid-template-columns: minmax(240px, 1.6fr) minmax(150px, 0.6fr) minmax(150px, 0.6fr) minmax(150px, 0.6fr) auto;
  gap: 12px;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.field input,
.field select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
}

.global-search__examples {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin: 16px 0;
}

.global-search__examples button {
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 36px;
  padding: 6px 12px;
  background: var(--wash);
}

.global-search__status {
  color: var(--muted);
  margin: 12px 0;
}

.global-search__results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}

.search-result-card,
.path-card,
.info-card,
.diagram-card,
.tool-panel,
.source-card,
.trend-summary-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 1px 0 rgba(23, 33, 43, 0.02);
}

.search-result-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  padding: 16px;
}

.search-result-card h3,
.path-card h3,
.info-card h3,
.source-card h3,
.trend-summary-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.search-result-card p,
.path-card p,
.info-card p,
.source-card p,
.trend-summary-card p {
  margin: 0;
  color: var(--muted);
}

.view {
  display: none;
}

.view.is-visible {
  display: block;
}

.path-grid,
.card-grid,
.protocol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.path-card,
.info-card {
  padding: 18px;
}

.path-card__items {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.path-card button {
  background: var(--teal-soft);
  border-color: #b8d8d3;
  color: #143f3a;
}

.diagram-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
  margin: 26px 0 30px;
}

.diagram-card {
  overflow: hidden;
  margin: 0;
}

.diagram-card figcaption {
  display: grid;
  gap: 4px;
  padding: 16px;
}

.diagram-card figcaption span {
  color: var(--muted);
}

.sub-module {
  margin-top: 42px;
}

.stack-list,
.timeline-list {
  display: grid;
  gap: 12px;
}

.stack-item,
.timeline-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.stack-index,
.timeline-item > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 900;
}

.stack-item h3,
.timeline-item h3 {
  margin: 0 0 8px;
}

.stack-item p,
.timeline-item p {
  margin: 0 0 8px;
  color: var(--muted);
}

.stack-item small {
  display: block;
  color: var(--ink);
}

.pill-row,
.card-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.pill-row span,
.card-sources a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 9px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  background: var(--wash);
}

.card-note {
  display: grid;
  gap: 5px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.card-note strong {
  font-size: 13px;
  color: var(--ink);
}

.card-note span,
.card-note li {
  color: var(--muted);
}

.card-note ul,
.timeline-item ul,
.recommendation ul,
.info-card ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.tool-panel {
  display: grid;
  grid-template-columns: minmax(240px, 0.75fr) minmax(260px, 1fr) minmax(280px, 1.1fr);
  gap: 18px;
  align-items: start;
  padding: 20px;
  margin: 28px 0;
}

.tool-panel--trend {
  grid-template-columns: minmax(240px, 0.9fr) minmax(220px, 0.55fr) minmax(280px, 1fr);
}

.tool-panel h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.tool-panel p {
  color: var(--muted);
}

.tool-controls {
  display: grid;
  gap: 12px;
}

.recommendation,
.framework-results {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--wash);
  padding: 16px;
}

.recommendation h4,
.mini-result h4 {
  margin: 0 0 8px;
  font-size: 20px;
}

.risk-meter {
  height: 10px;
  border-radius: 999px;
  background: #e4e9ee;
  overflow: hidden;
  margin: 14px 0 8px;
}

.risk-meter span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--amber), var(--coral));
}

.framework-results {
  display: grid;
  gap: 10px;
}

.mini-result {
  padding: 12px;
  border-left: 4px solid var(--teal);
  background: #fff;
}

.mini-result p {
  margin: 0;
}

.trend-summary {
  margin-bottom: 20px;
}

.trend-summary-card {
  padding: 20px;
}

.trend-summary-card h3 {
  max-width: 980px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
}

.trend-metrics,
.trend-meta,
.trend-card__head {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.trend-metrics {
  margin-top: 18px;
}

.trend-metrics span,
.trend-meta span,
.trend-status {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--wash);
  color: var(--muted);
  font-size: 13px;
}

.trend-metrics strong {
  color: var(--ink);
}

.trend-card__head {
  justify-content: space-between;
  gap: 12px;
}

.trend-status {
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.trend-status--proven-useful {
  border-color: #b8d8d3;
  background: var(--teal-soft);
  color: #143f3a;
}

.trend-status--useful-now {
  border-color: #c5d5e6;
  background: var(--blue-soft);
  color: #20435f;
}

.trend-status--promising {
  border-color: #f0ce91;
  background: var(--amber-soft);
  color: #684609;
}

.trend-status--situational,
.trend-status--watch {
  border-color: #f1c2b5;
  background: var(--coral-soft);
  color: #74341f;
}

.trend-meta {
  margin-top: 14px;
}

.card-note--takeaway {
  background: var(--teal-soft);
  border: 1px solid #b8d8d3;
  border-radius: 8px;
  padding: 12px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.check-option {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 10px 12px;
}

.check-option input {
  width: 18px;
  height: 18px;
}

.source-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.source-summary div {
  display: grid;
  min-width: 120px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.source-summary strong {
  font-size: 28px;
}

.source-summary span {
  color: var(--muted);
}

.source-list {
  display: grid;
  gap: 12px;
}

.source-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 16px;
}

.source-card > span {
  color: var(--muted);
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.mobile-nav-sheet {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 18px;
}

.mobile-nav-sheet__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.mobile-nav-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

@media (max-width: 980px) {
  .desktopNav,
  #desktopNav {
    display: none;
  }

  .mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 680px;
  }

  .global-search__controls {
    grid-template-columns: 1fr 1fr;
  }

  .field--wide,
  .clear-filters {
    grid-column: 1 / -1;
  }

  .tool-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
  }

  .brand {
    white-space: normal;
  }

  .hero-grid {
    padding-top: 24px;
  }

  .hero-copy h1 {
    font-size: 42px;
  }

  .global-search,
  .view,
  .site-footer {
    padding: 32px 18px;
  }

  .section-rail {
    display: none;
  }

  .global-search__controls,
  .path-grid,
  .card-grid,
  .protocol-grid,
  .diagram-band,
  .mobile-nav-list {
    grid-template-columns: 1fr;
  }

  .search-result-card,
  .source-card {
    grid-template-columns: 1fr;
  }

  .stack-item,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}