:root {
  --research-bg: #080a0e;
  --research-surface: #0e1117;
  --research-ink: #eeece6;
  --research-muted: #a0a7b3;
  --research-faint: #808998;
  --research-rule: #252a33;
  --research-rule-strong: #414854;
  --research-amber: #f7931a;
  --research-cyan: #79b7b1;
  --research-red: #c87a69;
  --research-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --research-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.research-page {
  margin: 0;
  color: var(--research-ink);
  background: var(--research-bg);
  font-family: var(--research-sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

.research-page ::selection {
  color: var(--research-bg);
  background: var(--research-amber);
}

body.research-page::before {
  content: none;
}

.research-page a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.research-page a:hover {
  color: var(--research-amber);
}

.research-page :is(a, button, input, select, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--research-amber);
  outline-offset: 4px;
}

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

.research-page code,
.research-page pre,
.research-page time {
  font-family: var(--research-mono);
}

.research-skip {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  color: var(--research-bg);
  background: var(--research-ink);
  transform: translateY(-160%);
}

.research-skip:focus {
  transform: translateY(0);
}

.research-topbar {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding-inline: max(4vw, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid var(--research-rule);
  background: var(--research-bg);
}

.research-brand-group {
  display: flex;
  gap: 14px;
  align-items: baseline;
}

.research-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  text-decoration: none;
}

.research-brand::before {
  content: "₿";
  color: var(--research-amber);
  font-size: 14px;
  line-height: 1;
}

.research-publication-link,
.research-topbar nav {
  color: var(--research-muted);
  font-family: var(--research-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-publication-link {
  text-decoration: none;
}

.research-topbar nav {
  display: flex;
  gap: 24px;
}

.research-topbar nav a {
  position: relative;
  text-decoration: none;
}

.research-topbar nav a[aria-current] {
  color: var(--research-ink);
}

.research-topbar nav a[aria-current]::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  background: var(--research-amber);
  content: "";
}

.research-breadcrumbs {
  width: min(1180px, 92vw);
  margin: 24px auto 0;
  color: var(--research-muted);
  font-family: var(--research-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.research-breadcrumbs ol,
.research-breadcrumbs li {
  display: flex;
  gap: 9px;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.research-breadcrumbs a {
  text-decoration: none;
}

.research-article,
.dataset-page {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.research-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 0.34fr);
  gap: clamp(40px, 7vw, 110px);
  padding: clamp(72px, 9vw, 130px) 0 72px;
  border-bottom: 1px solid var(--research-rule-strong);
}

.research-kicker,
.verified-record > header p,
.claim-register > header p,
.research-caveats > header p,
.research-sources > header p,
.catalog-table > header p,
.data-dictionary > header p,
.source-policy > div > p,
.download-ledger > div > p,
.citation-box > div > p,
.dataset-citation > div:first-child > p,
.related-research > p,
.dataset-dossiers > p {
  margin: 0 0 18px;
  color: var(--research-muted);
  font-family: var(--research-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.research-kicker span {
  margin-right: 14px;
  color: var(--research-amber);
}

.research-hero h1,
.dataset-hero h1 {
  max-width: 890px;
  margin: 0;
  font-size: clamp(3rem, 6.4vw, 6.6rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.96;
  text-wrap: balance;
}

.research-dek,
.dataset-hero > p {
  max-width: 760px;
  margin: 34px 0 40px;
  color: #c6c4bd;
  font-size: clamp(1.1rem, 1.7vw, 1.45rem);
  line-height: 1.5;
  text-wrap: pretty;
}

.research-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(100px, 1fr));
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--research-rule);
}

.research-meta div {
  padding: 16px 16px 0 0;
}

.research-meta dt,
.dataset-hero dt {
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 10px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.research-meta dd,
.dataset-hero dd {
  margin: 4px 0 0;
  font-family: var(--research-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.research-question {
  align-self: end;
  padding: 24px 0 0;
  border-top: 3px solid var(--research-amber);
}

.research-question span {
  color: var(--research-amber);
  font-family: var(--research-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.research-question p {
  margin: 13px 0 0;
  font-size: 1.13rem;
  line-height: 1.52;
}

.research-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  margin: 42px 0 0;
  border-bottom: 1px solid var(--research-rule);
  background: var(--research-surface);
}

.research-lead img {
  width: 100%;
  height: clamp(350px, 45vw, 560px);
  object-fit: cover;
  object-position: center;
  filter: saturate(0.7) contrast(1.05);
}

.research-lead--document img,
.research-lead--software img,
.research-lead--data img,
.research-lead--chart img {
  padding: clamp(20px, 4vw, 50px);
  object-fit: contain;
  background: #090b11;
  filter: saturate(0.82) contrast(1.04);
}

.research-lead--chart img {
  height: clamp(280px, 33vw, 410px);
}

.research-lead figcaption {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 20px;
  padding: 34px;
  color: #bbb9b2;
  background: var(--research-surface);
  font-size: 14px;
}

.research-lead figcaption a {
  color: var(--research-muted);
  font-family: var(--research-mono);
  font-size: 10px;
}

.research-reading-shell {
  display: grid;
  grid-template-columns: minmax(160px, 190px) minmax(0, 1fr);
  gap: clamp(44px, 5.5vw, 76px);
  align-items: start;
}

.research-reading-body {
  min-width: 0;
}

.article-contents {
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  padding: 55px 0 38px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--research-rule-strong) transparent;
}

.article-contents summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  color: var(--research-amber);
  cursor: pointer;
  font-family: var(--research-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  list-style: none;
  text-transform: uppercase;
}

.article-contents summary::-webkit-details-marker {
  display: none;
}

.article-contents summary::after {
  color: var(--research-faint);
  content: "+";
}

.article-contents[open] summary::after {
  content: "−";
}

.article-contents > nav {
  min-width: 0;
}

.article-contents ol {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--research-rule);
  counter-reset: contents;
  list-style: none;
}

.article-contents li {
  position: relative;
  border-bottom: 1px solid var(--research-rule);
  counter-increment: contents;
}

.article-contents li::before {
  position: absolute;
  top: 11px;
  left: 0;
  color: var(--research-faint);
  font: 400 9px/1.4 var(--research-mono);
  content: counter(contents, decimal-leading-zero);
}

.article-contents a {
  display: block;
  padding: 9px 0 9px 27px;
  color: var(--research-muted);
  font-size: 11px;
  line-height: 1.45;
  text-decoration: none;
}

.article-contents a:hover,
.article-contents a[aria-current="location"] {
  color: var(--research-ink);
}

.article-contents a[aria-current="location"]::before {
  position: absolute;
  top: 50%;
  left: -8px;
  width: 3px;
  height: 3px;
  background: var(--research-amber);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.contents-utilities {
  margin-top: 22px;
}

.contents-utilities a {
  padding: 6px 0;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.contents-utilities a span {
  color: var(--research-amber);
}

.verified-record,
.claim-register,
.research-caveats,
.catalog-table,
.data-dictionary {
  display: grid;
  grid-template-columns: 0.34fr minmax(0, 1fr);
  gap: clamp(35px, 7vw, 110px);
  padding: clamp(62px, 8vw, 110px) 0;
  border-bottom: 1px solid var(--research-rule-strong);
  scroll-margin-top: 92px;
}

.verified-record h2,
.claim-register h2,
.research-caveats h2,
.research-sources h2,
.catalog-table h2,
.data-dictionary h2,
.source-policy h2,
.download-ledger h2,
.citation-box h2,
.dataset-citation h2 {
  margin: 0;
  font-size: clamp(1.55rem, 2.7vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.1;
  text-wrap: balance;
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
}

.research-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.research-table th,
.research-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--research-rule);
  text-align: left;
  vertical-align: top;
}

.research-table thead th {
  color: var(--research-muted);
  font-family: var(--research-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.research-table tbody th {
  color: var(--research-ink);
  font-weight: 500;
}

.research-table td {
  color: #b7b5ae;
}

.research-table a {
  text-decoration-color: var(--research-rule-strong);
}

.research-table a:hover {
  text-decoration-color: var(--research-amber);
}

.research-table code {
  color: var(--research-cyan);
  font-size: 0.92em;
}

.key-finding {
  display: grid;
  grid-template-columns: 0.25fr 1fr 0.35fr;
  gap: 45px;
  align-items: start;
  margin: 0;
  padding: 68px 0;
  border-bottom: 1px solid var(--research-rule-strong);
  scroll-margin-top: 92px;
}

.key-finding > span {
  color: var(--research-amber);
  font-family: var(--research-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.key-finding blockquote {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.8rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.28;
  text-wrap: pretty;
}

.key-finding > p {
  margin: 5px 0 0;
  color: var(--research-muted);
  font-size: 12px;
}

.research-prose {
  border-bottom: 1px solid var(--research-rule-strong);
}

.research-section {
  display: grid;
  grid-template-columns: minmax(65px, 0.22fr) minmax(0, 0.78fr);
  gap: clamp(35px, 7vw, 110px);
  padding: clamp(65px, 8vw, 112px) 0;
  border-bottom: 1px solid var(--research-rule);
  scroll-margin-top: 92px;
}

.research-section:last-child {
  border-bottom: 0;
}

.section-number {
  color: var(--research-amber);
  font-family: var(--research-mono);
  font-size: 13px;
}

.section-copy {
  max-width: 760px;
}

.section-copy h2 {
  margin: 0 0 35px;
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.02;
  text-wrap: balance;
}

.section-copy p {
  margin: 0 0 1.35em;
  color: #c6c4bd;
  font-size: clamp(1.03rem, 1.3vw, 1.15rem);
  line-height: 1.8;
  text-wrap: pretty;
}

.research-section:first-child .section-copy p:first-of-type::first-letter {
  float: left;
  margin: 0.1em 0.12em 0 0;
  color: var(--research-ink);
  font-size: 3.3em;
  line-height: 0.78;
}

.section-copy code {
  padding: 0.08em 0.25em;
  color: var(--research-cyan);
  background: #171b24;
  font-size: 0.88em;
}

.evidence-artifact {
  margin: 0;
  padding: clamp(70px, 9vw, 125px) 0;
  border-bottom: 1px solid var(--research-rule-strong);
  scroll-margin-top: 92px;
}

.evidence-artifact figcaption {
  display: grid;
  grid-template-columns: 0.22fr 0.6fr 0.3fr;
  gap: 38px;
  align-items: start;
  margin-bottom: 50px;
}

.evidence-artifact figcaption > span {
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.evidence-artifact h2 {
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 3.8rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.evidence-artifact figcaption p,
.artifact-note {
  margin: 0;
  color: var(--research-muted);
  font-size: 13px;
}

.evidence-artifact figcaption > div {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.evidence-artifact figcaption nav {
  display: flex;
  gap: 14px;
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 10px;
}

.evidence-artifact pre {
  margin: 0;
  padding: clamp(24px, 4vw, 54px);
  overflow-x: auto;
  border: 1px solid var(--research-rule-strong);
  color: #d5d7d8;
  background: #090b11;
  font-size: clamp(11px, 1.3vw, 14px);
  line-height: 1.8;
}

.artifact-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--research-rule-strong);
  list-style: none;
}

.artifact-timeline li {
  min-height: 210px;
  padding: 25px 24px;
  border-right: 1px solid var(--research-rule);
  border-bottom: 1px solid var(--research-rule);
}

.artifact-timeline li:nth-child(3n) {
  border-right: 0;
}

.artifact-timeline time {
  display: block;
  margin-bottom: 38px;
  color: var(--research-amber);
  font-size: 11px;
}

.artifact-timeline strong {
  display: block;
  font-size: 1.08rem;
  line-height: 1.3;
}

.artifact-timeline p {
  color: var(--research-muted);
  font-size: 13px;
}

.artifact-note {
  margin-top: 22px;
}

.claim-grid {
  border-top: 1px solid var(--research-rule);
}

.claim-grid > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--research-rule);
}

.claim-status {
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.claim-grid p {
  margin: 0;
  color: #c6c4bd;
}

.claim-grid small {
  display: flex;
  grid-column: 2;
  flex-wrap: wrap;
  gap: 5px 12px;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 9px;
}

.claim-grid small a,
.source-ref {
  color: var(--research-cyan);
}

.research-caveats ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.research-caveats li {
  position: relative;
  padding: 17px 0 17px 30px;
  border-bottom: 1px solid var(--research-rule);
  color: #c6c4bd;
}

.research-caveats li::before {
  position: absolute;
  top: 17px;
  left: 0;
  color: var(--research-red);
  content: "—";
}

.research-sources {
  padding: clamp(75px, 9vw, 130px) 0;
  border-bottom: 1px solid var(--research-rule-strong);
  scroll-margin-top: 92px;
}

.research-sources > header {
  display: grid;
  grid-template-columns: 0.22fr 1fr 0.3fr;
  gap: 38px;
  align-items: end;
  margin-bottom: 45px;
}

.research-sources > header p {
  color: var(--research-amber);
}

.research-sources > header span {
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 10px;
}

.research-sources ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--research-rule-strong);
  counter-reset: source;
  list-style: none;
}

.research-sources li {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 0.8fr 130px;
  gap: 35px;
  align-items: start;
  padding: 25px 0 25px 55px;
  border-bottom: 1px solid var(--research-rule);
  counter-increment: source;
  scroll-margin-top: 92px;
}

.research-sources li::before {
  position: absolute;
  left: 0;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 11px;
  content: counter(source, decimal-leading-zero);
}

.research-sources li strong,
.research-sources li span {
  display: block;
}

.research-sources li strong {
  font-weight: 500;
}

.research-sources li span {
  margin-top: 4px;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 10px;
}

.research-sources li p {
  margin: 0;
  color: var(--research-muted);
  font-size: 13px;
}

.research-sources li > a {
  font-family: var(--research-mono);
  font-size: 10px;
}

.citation-box,
.dataset-citation {
  display: grid;
  grid-template-columns: 0.32fr 1fr 0.35fr;
  gap: 42px;
  align-items: start;
  padding: 65px 0;
  border-bottom: 1px solid var(--research-rule-strong);
  scroll-margin-top: 92px;
}

.citation-box blockquote,
.dataset-citation blockquote {
  margin: 0;
  padding-left: 24px;
  border-left: 2px solid var(--research-amber);
  color: #c6c4bd;
  font-family: var(--research-mono);
  font-size: 12px;
}

.citation-box nav,
.dataset-citation-actions nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-family: var(--research-mono);
  font-size: 10px;
}

.editorial-note {
  display: grid;
  grid-template-columns: 0.25fr 1fr 0.28fr;
  gap: 40px;
  padding: 42px 0;
  border-bottom: 1px solid var(--research-rule-strong);
  color: var(--research-muted);
  font-size: 13px;
}

.editorial-note strong {
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.editorial-note p {
  margin: 0;
}

.editorial-note a {
  font-family: var(--research-mono);
  font-size: 10px;
}

.related-research,
.dataset-dossiers {
  display: grid;
  grid-template-columns: 0.25fr repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 80px 0 110px;
}

.related-research > p,
.dataset-dossiers > p {
  padding-right: 30px;
}

.related-research > p {
  grid-row: 1 / span 2;
}

.dataset-dossiers > p {
  grid-row: 1 / span 3;
}

.related-research a,
.dataset-dossiers a {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
  padding: 22px;
  border-top: 1px solid var(--research-rule-strong);
  border-right: 1px solid var(--research-rule);
  text-decoration: none;
}

.related-research a:nth-of-type(even),
.dataset-dossiers a:nth-of-type(even) {
  border-right: 0;
}

.related-research a:hover,
.dataset-dossiers a:hover {
  color: var(--research-ink);
  border-top-color: var(--research-amber);
}

.related-research a span,
.dataset-dossiers a span {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.3;
}

.related-research a small,
.dataset-dossiers a small {
  margin-top: 25px;
  color: var(--research-muted);
  font-size: 11px;
  line-height: 1.4;
}

.research-footer {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 28px;
  border-top: 1px solid var(--research-rule);
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 10px;
}

.research-footer a {
  text-decoration: none;
}

/* Data catalog */

.dataset-hero {
  padding: clamp(80px, 10vw, 150px) 0 80px;
  border-bottom: 1px solid var(--research-rule-strong);
}

.dataset-hero h1 {
  max-width: 920px;
}

.dataset-hero > dl {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 55px 0 0;
  border-top: 1px solid var(--research-rule);
}

.dataset-hero > dl div {
  padding: 18px 18px 0 0;
}

.download-ledger {
  display: grid;
  grid-template-columns: 1.15fr repeat(3, 0.8fr);
  padding: 70px 0;
  border-bottom: 1px solid var(--research-rule-strong);
}

.download-ledger > div {
  padding-right: 45px;
}

.download-ledger > div > span {
  display: block;
  margin-top: 20px;
  color: var(--research-muted);
  font-size: 13px;
}

.download-ledger > a {
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 22px;
  border-top: 3px solid var(--research-cyan);
  border-left: 1px solid var(--research-rule);
  text-decoration: none;
}

.download-ledger > a strong {
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 20px;
}

.download-ledger > a span {
  margin-top: 25px;
  font-size: 13px;
}

.download-ledger > a small {
  margin-top: auto;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 9px;
}

.data-dictionary dl {
  margin: 0;
}

.schema-download {
  display: inline-block;
  margin-top: 24px;
  color: var(--research-cyan);
  font-family: var(--research-mono);
  font-size: 10px;
  text-decoration: none;
  text-transform: uppercase;
}

.schema-download span {
  margin-left: 6px;
}

.data-dictionary dl div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 30px;
  padding: 14px 0;
  border-bottom: 1px solid var(--research-rule);
}

.data-dictionary dt {
  color: var(--research-cyan);
}

.data-dictionary dd {
  margin: 0;
  color: var(--research-muted);
  font-size: 14px;
}

.data-dictionary .method-note {
  grid-column: 2;
  margin: 30px 0 0;
  padding-left: 20px;
  border-left: 2px solid var(--research-amber);
  color: var(--research-muted);
  font-size: 13px;
}

.catalog-table .research-table {
  min-width: 720px;
}

.catalog-interface {
  min-width: 0;
}

.catalog-tools {
  margin-bottom: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--research-rule-strong);
  border-bottom: 1px solid var(--research-rule);
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(165px, 0.55fr) auto;
  gap: 12px 18px;
  align-items: end;
}

.catalog-tools label {
  min-width: 0;
}

.catalog-tools label > span {
  display: block;
  margin-bottom: 7px;
  color: var(--research-faint);
  font-family: var(--research-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.catalog-tools input,
.catalog-tools select,
.catalog-tools button {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--research-rule-strong);
  color: var(--research-ink);
  background: #0a0c13;
  font: 400 12px/1.3 var(--research-mono);
}

.catalog-tools input,
.catalog-tools select {
  padding: 10px 12px;
}

.catalog-tools button {
  width: auto;
  padding: 10px 14px;
  color: var(--research-amber);
  cursor: pointer;
}

.catalog-tools button:disabled {
  color: var(--research-faint);
  cursor: default;
  opacity: 0.55;
}

.catalog-tools input::placeholder {
  color: var(--research-faint);
}

.catalog-status {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--research-cyan);
  font: 400 10px/1.4 var(--research-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.catalog-empty {
  margin: 0 0 28px;
  padding: 26px 0;
  border-top: 1px solid var(--research-rule);
  border-bottom: 1px solid var(--research-rule);
  color: var(--research-muted);
}

.catalog-table tr[hidden] {
  display: none;
}

.catalog-table .research-table tbody th {
  width: 130px;
  font-family: var(--research-mono);
  font-size: 11px;
}

.catalog-event-link {
  color: var(--research-ink);
  font-weight: 500;
  text-decoration-color: var(--research-rule-strong);
}

.dataset-citation-actions p {
  margin: 0;
  color: var(--research-muted);
  font-size: 12px;
}

.dataset-citation-actions {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.source-policy {
  display: grid;
  grid-template-columns: 0.34fr 1fr;
  gap: clamp(35px, 7vw, 110px);
  padding: 80px 0;
  border-bottom: 1px solid var(--research-rule-strong);
}

.source-policy ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-policy li {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 30px;
  padding: 17px 0;
  border-bottom: 1px solid var(--research-rule);
}

.source-policy li strong {
  color: var(--research-cyan);
  font-weight: 500;
}

.source-policy li span {
  color: var(--research-muted);
  font-size: 14px;
}

@media (max-width: 1040px) {
  .research-reading-shell {
    display: block;
  }

  .article-contents {
    position: static;
    top: auto;
    max-height: none;
    padding: 42px 0 48px;
    overflow: visible;
    border-bottom: 1px solid var(--research-rule-strong);
    display: grid;
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 38px;
  }

  .article-contents ol {
    margin: 0;
    border-top: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 36px;
  }

  .article-contents > nav {
    grid-column: 2;
  }

  .article-contents:not([open]) {
    padding: 12px 0;
    grid-template-columns: 1fr;
  }

  .article-contents:not([open]) summary {
    grid-column: 1 / -1;
  }

  .contents-utilities {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
  }
}

@media (max-width: 900px) {
  .research-hero,
  .research-lead,
  .verified-record,
  .claim-register,
  .research-caveats,
  .catalog-table,
  .data-dictionary,
  .source-policy {
    grid-template-columns: 1fr;
  }

  .research-hero {
    gap: 45px;
  }

  .research-lead img {
    height: 58vw;
  }

  .research-lead--chart img {
    height: clamp(210px, 38vw, 330px);
  }

  .research-meta {
    grid-template-columns: repeat(2, 1fr);
  }

  .key-finding,
  .citation-box,
  .dataset-citation,
  .editorial-note {
    grid-template-columns: 0.3fr 1fr;
  }

  .key-finding > p,
  .citation-box nav,
  .dataset-citation-actions,
  .editorial-note a {
    grid-column: 2;
  }

  .evidence-artifact figcaption,
  .research-sources > header {
    grid-template-columns: 0.3fr 1fr;
  }

  .evidence-artifact figcaption > div,
  .research-sources > header span {
    grid-column: 2;
  }

  .research-sources li {
    grid-template-columns: 1fr 0.9fr;
  }

  .research-sources li > a {
    grid-column: 2;
  }

  .download-ledger {
    grid-template-columns: repeat(3, 1fr);
  }

  .download-ledger > div {
    grid-column: 1 / -1;
    margin-bottom: 35px;
  }

  .related-research,
  .dataset-dossiers {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-research > p,
  .dataset-dossiers > p {
    grid-column: 1 / -1;
    grid-row: auto;
  }

}

@media (max-width: 760px) {
  .research-publication-link {
    display: none;
  }

  .research-topbar nav {
    gap: 16px;
  }
}

@media (max-width: 620px) {
  body.research-page {
    font-size: 15px;
  }

  .research-topbar {
    min-height: 64px;
  }

  .research-publication-link,
  .research-topbar nav a:nth-child(2) {
    display: none;
  }

  .research-topbar nav {
    gap: 12px;
    font-size: 9px;
  }

  .research-breadcrumbs {
    overflow-x: auto;
    white-space: nowrap;
  }

  .research-hero,
  .dataset-hero {
    padding-top: 62px;
  }

  .research-hero h1,
  .dataset-hero h1 {
    font-size: clamp(2.7rem, 14vw, 4.4rem);
  }

  .research-meta,
  .dataset-hero > dl {
    grid-template-columns: repeat(2, 1fr);
  }

  .research-lead {
    margin-right: -4vw;
    margin-left: -4vw;
  }

  .research-lead img {
    height: 75vw;
  }

  .research-lead--document img,
  .research-lead--software img,
  .research-lead--data img,
  .research-lead--chart img {
    height: min(82vw, 430px);
    padding: 20px;
  }

  .research-lead--chart img {
    height: clamp(210px, 38vw, 330px);
  }

  .research-lead figcaption {
    padding: 24px 4vw;
  }

  .article-contents {
    grid-template-columns: 1fr;
  }

  .article-contents ol {
    grid-template-columns: 1fr;
  }

  .contents-utilities {
    grid-column: auto;
  }

  .article-contents > nav {
    grid-column: auto;
  }

  .verified-record,
  .claim-register,
  .research-caveats,
  .catalog-table,
  .data-dictionary,
  .source-policy {
    gap: 35px;
  }

  .key-finding,
  .citation-box,
  .dataset-citation,
  .editorial-note,
  .evidence-artifact figcaption,
  .research-sources > header {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .key-finding > p,
  .citation-box nav,
  .dataset-citation-actions,
  .editorial-note a,
  .evidence-artifact figcaption > div,
  .research-sources > header span {
    grid-column: auto;
  }

  .research-section {
    grid-template-columns: 38px 1fr;
    gap: 16px;
  }

  .section-copy h2 {
    font-size: 2.05rem;
  }

  .artifact-timeline {
    grid-template-columns: 1fr;
  }

  .artifact-timeline li,
  .artifact-timeline li:nth-child(3n) {
    min-height: 0;
    border-right: 0;
  }

  .artifact-timeline time {
    margin-bottom: 16px;
  }

  .claim-grid > div,
  .research-sources li,
  .data-dictionary dl div,
  .source-policy li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .claim-grid small {
    grid-column: auto;
  }

  .research-sources li {
    padding-left: 42px;
  }

  .research-sources li::before {
    left: 0;
    margin-left: 0;
  }

  .research-sources li > a {
    grid-column: auto;
  }

  .download-ledger,
  .related-research,
  .dataset-dossiers {
    grid-template-columns: 1fr;
  }

  .download-ledger > div,
  .related-research > p,
  .dataset-dossiers > p {
    grid-column: auto;
    grid-row: auto;
  }

  .download-ledger > a {
    min-height: 150px;
    border-left: 0;
  }

  .related-research a,
  .dataset-dossiers a {
    min-height: 118px;
    border-right: 0;
  }

  .data-dictionary .method-note {
    grid-column: auto;
  }

  .research-footer {
    flex-wrap: wrap;
  }

  .catalog-tools {
    grid-template-columns: 1fr;
  }

  .catalog-tools button {
    width: 100%;
  }

  .catalog-tools input,
  .catalog-tools select {
    font-size: 16px;
  }

  .catalog-status {
    grid-column: auto;
  }
}

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

@media (forced-colors: active) {
  .research-question,
  .download-ledger > a,
  .citation-box blockquote,
  .dataset-citation blockquote {
    border-color: CanvasText;
  }
}

@media print {
  body.research-page {
    color: #111;
    background: #fff;
    font-size: 10pt;
  }

  .research-topbar,
  .research-footer,
  .research-skip,
  .related-research,
  .dataset-dossiers,
  .citation-box nav,
  .dataset-citation-actions nav,
  .download-ledger {
    display: none;
  }

  .research-page *,
  .research-page *::before,
  .research-page *::after {
    color: #111 !important;
    background: transparent !important;
    border-color: #999 !important;
  }

  .research-article,
  .dataset-page {
    width: 100%;
  }

  .research-section,
  .research-sources li,
  .evidence-artifact,
  .research-table tr {
    break-inside: avoid;
  }

  a[href^="http"]::after {
    font-family: var(--research-mono);
    font-size: 7pt;
    content: " (" attr(href) ")";
  }
}