:root {
  --paper: #f5f2e9;
  --paper-deep: #ebe7dc;
  --ink: #223b35;
  --muted: #656c62;
  --rule: #d3d4c7;
  --accent: #a5442b;
  --accent-pale: #efe1d6;
  --green-pale: #e4e9df;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
  font-synthesis: none;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 2rem; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--serif); font-size: 18px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
::selection { background: #d5dece; color: #18382f; }
a { color: inherit; text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; }
button, summary, input[type="range"], select { cursor: pointer; }
button { color: inherit; }
button:disabled { opacity: .5; cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
p { margin: 0 0 1.2em; }
strong { font-weight: 700; }
h1, h2, h3, h4 { font-weight: 400; margin-top: 0; text-wrap: balance; }
figure { margin: 0; }
svg { max-width: 100%; height: auto; }
sup { font: .68em var(--sans); line-height: 0; vertical-align: super; }
sup a { color: var(--accent); padding: .1em; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -6rem; left: 1rem; padding: .6rem 1rem; background: var(--ink); color: var(--paper); z-index: 20; }
.skip-link:focus { top: 1rem; }
.masthead, .hero, .orientation, .reading-layout, .site-footer { width: min(1240px, calc(100% - 112px)); margin-inline: auto; }
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 28px 0 25px; border-bottom: 1px solid var(--ink); }
.wordmark { font-size: 32px; letter-spacing: -1.3px; line-height: 1.2; text-decoration: none; white-space: nowrap; }
.wordmark span { color: var(--accent); }
.masthead nav { display: flex; align-items: center; gap: 32px; font: 13px var(--sans); }
.masthead nav a { text-decoration: none; padding: 8px 0; }
.masthead nav a:last-child span { color: var(--accent); margin-left: 6px; }
.eyebrow, .chapter-label, .source-meta, .figure-number, .model-label { font-family: var(--mono); font-size: 10px; font-weight: 400; text-transform: uppercase; letter-spacing: 1.6px; line-height: 1.7; }
.hero { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; gap: 3rem; padding: 75px 0 69px; }
.hero .eyebrow { display: flex; gap: 12px; align-items: center; font-size: 11px; margin-bottom: 25px; }
.small-star { color: var(--accent); font: 27px var(--serif); line-height: 1; }
h1 { font-size: clamp(72px, 7.7vw, 112px); line-height: .97; letter-spacing: -5px; margin: 0 0 29px -5px; }
h1 em { color: var(--accent); font-weight: 400; }
.standfirst { font-size: 22px; line-height: 1.55; letter-spacing: -.3px; margin-bottom: 15px; max-width: 540px; }
.hero-description { font: 14px/1.8 var(--sans); color: var(--muted); max-width: 400px; margin-bottom: 29px; }
.hero-actions { display: flex; align-items: center; gap: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 46px; padding: 12px 20px; border: 1px solid var(--ink); border-radius: 0; background: transparent; text-decoration: none; font: 12px/1.6 var(--sans); transition: background-color .15s, color .15s; }
.button span { font-size: 18px; line-height: 1; }
.button:hover { background: var(--green-pale); color: var(--ink); }
.button.primary { color: var(--paper); background: var(--ink); }
.button.primary:hover { background: #35554a; }
.button.small { padding: 9px 14px; gap: 14px; }
.reading-time { font: 10px var(--mono); color: var(--muted); white-space: nowrap; }
.hero-figure { margin-top: 12px; color: var(--ink); }
.hero-figure svg { display: block; width: 100%; }
.diagram-label rect { fill: var(--paper); }
.diagram-label text { fill: currentColor; text-anchor: middle; font: 10px var(--mono); letter-spacing: 1px; }
.diagram-label .diagram-small { font: italic 13px var(--serif); letter-spacing: 0; }
.diagram-center { font: 24px var(--serif); fill: var(--accent); }
.diagram-foot { font: 9px var(--mono); letter-spacing: 1.5px; fill: var(--muted); }
.hero-figure figcaption { border-top: 1px solid var(--rule); padding-top: 16px; margin: 5px 20px 0; text-align: center; font-size: 12px; color: var(--muted); }
.figure-number { margin-right: 9px; color: var(--accent); font-size: 9px; letter-spacing: 1px; }
.orientation { display: flex; justify-content: space-between; gap: 25px; align-items: center; padding: 20px 0; border-block: 1px solid var(--rule); }
.orientation p { margin: 0; font-size: 16px; }
.orientation .eyebrow { display: block; color: var(--muted); margin-bottom: 3px; font-size: 9px; }
.orientation > a { flex-shrink: 0; font: 12px var(--sans); text-decoration: none; }
.orientation > a span { color: var(--accent); padding-left: 14px; font-size: 20px; }
.reading-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 75px; align-items: start; }
.contents { align-self: stretch; padding-top: 80px; border-right: 1px solid var(--rule); }
.contents-inner { position: sticky; top: 35px; padding-right: 26px; padding-bottom: 30px; }
.contents .eyebrow { color: var(--muted); margin-bottom: 24px; }
.contents ol { list-style: none; margin: 0; padding: 0; }
.contents li { margin-bottom: 9px; }
.contents nav a { display: flex; align-items: baseline; gap: 11px; padding: 8px 0; font: 12px/1.6 var(--sans); text-decoration: none; color: var(--muted); }
.contents nav a span { font: 10px var(--mono); opacity: .8; }
.contents nav a[aria-current="location"] { color: var(--accent); font-weight: 600; }
.contents nav a:hover { color: var(--ink); }
.reading-progress { margin: 34px 0 23px; }
.progress-label { display: flex; justify-content: space-between; font: 9px var(--mono); color: var(--muted); margin-bottom: 10px; }
.progress-track { height: 2px; background: var(--rule); }
#progress-fill { height: 100%; width: 0; background: var(--accent); }
.contents-note { font: italic 13px/1.6 var(--serif); color: var(--muted); }
.back-top { font: 10px var(--sans); color: var(--muted); text-decoration: none; }
.primer { min-width: 0; padding-right: 50px; }
.chapter { padding: 76px 0 70px; border-bottom: 1px solid var(--rule); scroll-margin-top: 15px; }
.chapter-label { display: flex; justify-content: space-between; gap: 20px; color: var(--accent); margin-bottom: 26px; font-size: 9px; letter-spacing: 1.1px; }
.chapter-label span:last-child { color: var(--muted); text-align: right; }
h2 { font-size: clamp(42px, 4.4vw, 62px); line-height: 1.04; letter-spacing: -1.8px; margin-bottom: 30px; }
.lead { font-size: 23px; line-height: 1.5; letter-spacing: -.2px; margin-bottom: 1.2em; }
.chapter > p:not(.lead, .chapter-label, .takeaway) { color: #34433b; }
.chapter h3 { font-size: 26px; letter-spacing: -.5px; line-height: 1.25; margin: 35px 0 15px; }
.definition { margin: 32px 0; padding: 27px 29px; border-left: 2px solid var(--accent); background: var(--paper-deep); }
.definition .eyebrow { color: var(--muted); font-size: 9px; }
.definition > p { margin: 12px 0 0; font-size: 21px; line-height: 1.65; }
.margin-note { padding: 14px 0 0 20px; margin: 28px 0 0; border-left: 1px solid var(--accent); }
.margin-note .eyebrow { color: var(--accent); font-size: 9px; }
.margin-note p { font: 14px/1.8 var(--sans); color: var(--muted); margin: 9px 0 0; }
.timeline { list-style: none; margin: 40px 0 32px; padding: 0; }
.timeline > li { position: relative; display: grid; grid-template-columns: 111px minmax(0, 1fr); gap: 23px; padding-bottom: 32px; }
.timeline > li::before { content: ""; position: absolute; left: 116px; top: 10px; bottom: -10px; border-left: 1px solid var(--rule); }
.timeline > li::after { content: ""; position: absolute; left: 113px; top: 7px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.timeline > li:last-child::before { bottom: 32px; }
.timeline-date { font: 10px/1.8 var(--mono); padding-top: 3px; color: var(--accent); }
.timeline h3 { font-size: 24px; margin: 0 0 11px; }
.timeline p { font-size: 16px; line-height: 1.8; margin-bottom: 13px; }
.timeline .history-lesson { font: 9px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.history-lesson span { display: block; margin-top: 5px; font: italic 16px/1.55 var(--serif); text-transform: none; letter-spacing: 0; color: var(--ink); }
.takeaway { border-block: 1px solid var(--ink); padding: 25px 0; margin: 30px 0 0; font-size: 26px; line-height: 1.4; text-wrap: balance; }
.table-scroll { overflow-x: auto; margin: 30px 0; }
table { border-collapse: collapse; width: 100%; min-width: 540px; text-align: left; font: 13px/1.65 var(--sans); }
th, td { border-bottom: 1px solid var(--rule); vertical-align: top; padding: 17px 12px 17px 0; }
thead th { font: 9px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .6px; border-block: 1px solid var(--ink); }
tbody th { width: 23%; font-weight: 600; }
tbody td { width: 38.5%; color: #515e53; }
table caption { caption-side: bottom; text-align: left; padding-top: 12px; font: italic 13px/1.6 var(--serif); color: var(--muted); }
.funding-models { margin: 25px 0 35px; border-top: 1px solid var(--rule); }
.funding-models details { border-bottom: 1px solid var(--rule); }
summary { list-style: none; display: flex; align-items: center; gap: 15px; padding: 18px 0; font-size: 19px; line-height: 1.4; }
summary::-webkit-details-marker { display: none; }
.model-number { font: 10px var(--mono); border: 1px solid var(--rule); width: 28px; height: 28px; display: grid; place-items: center; flex-shrink: 0; }
.disclosure-icon { margin-left: auto; font: 22px var(--sans); color: var(--accent); }
details[open] .disclosure-icon { transform: rotate(45deg); }
.details-body { padding: 0 5px 10px 44px; font-size: 16px; }
.test-question { font: 12px/1.8 var(--sans); color: var(--muted); }
.evidence-note { background: var(--green-pale); padding: 28px 30px; margin: 35px 0; }
.evidence-note .eyebrow { font-size: 9px; color: #54644f; margin-bottom: 10px; }
.evidence-note h3 { font-size: 25px; margin: 0 0 15px; }
.evidence-note p:not(.eyebrow) { font-size: 16px; margin-bottom: 0; }
.experiment { margin: 35px 0; padding: 25px 26px 0; border: 1px solid var(--rule); background: #f9f7f0; }
.experiment-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.experiment-heading .eyebrow { color: var(--accent); font-size: 9px; letter-spacing: 1px; }
.model-label { font-size: 8px; letter-spacing: .4px; color: var(--muted); }
.experiment h3 { font-size: 24px; margin: 15px 0 12px; }
.experiment > p:not(.readout) { font: 13px/1.75 var(--sans); color: var(--muted); }
.experiment svg { display: block; width: 100%; margin-top: 20px; }
.experiment svg text { font-family: var(--sans); fill: var(--muted); font-size: 12px; }
.experiment figcaption { border-top: 1px solid var(--rule); padding: 15px 0 18px; font: 12px/1.8 var(--sans); color: var(--muted); }
.segmented { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; border: 1px solid var(--rule); }
.segmented button { border: 0; padding: 10px 13px; min-height: 42px; background: transparent; font: 11px var(--sans); }
.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.segmented button:hover:not([aria-pressed="true"]) { background: var(--paper-deep); }
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
.text-button { border: 0; background: transparent; text-decoration: underline; text-underline-offset: 4px; font: 11px var(--sans); min-height: 44px; padding: 10px; }
.text-button:hover { color: var(--accent); }
.readout { font: 13px/1.8 var(--sans); padding: 16px 0; margin: 0; min-height: 76px; }
.range-label { display: flex; align-items: center; justify-content: space-between; font: 12px var(--sans); margin: 24px 0 7px; }
.range-label output { color: var(--accent); font: 24px var(--serif); }
input[type="range"] { width: 100%; min-height: 28px; accent-color: var(--ink); margin: 0; }
.range-endpoints { display: flex; justify-content: space-between; font: 9px var(--mono); color: var(--muted); margin-bottom: 20px; }
.outcomes { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
.outcome { padding: 9px 3px; text-align: center; border: 1px solid var(--rule); font: 10px/1.6 var(--mono); color: var(--muted); }
.outcome span { display: block; font-size: 9px; }
.outcome.hit { border-color: var(--accent); background: var(--accent-pale); color: #81351e; }
.stat-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; border-block: 1px solid var(--rule); padding: 25px 0; margin: 28px 0; }
.stat-pair > div { display: flex; align-items: center; gap: 18px; font: 11px/1.75 var(--sans); color: var(--muted); }
.stat-number { font: 54px/1 var(--serif); letter-spacing: -2px; color: var(--accent); }
.stat-number span { font-size: 28px; }
.two-definitions { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; border-left-color: var(--ink); }
.two-definitions h4 { margin: 0 0 8px; font-size: 21px; }
.two-definitions div p { font-size: 15px; line-height: 1.7; margin: 0; }
.two-definitions > .small-note { grid-column: 1/-1; font: 11px/1.7 var(--sans); color: var(--muted); margin: 0; }
.reforms { list-style: none; padding: 0; margin: 30px 0; }
.reforms > li { display: grid; grid-template-columns: 25px 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid var(--rule); }
.reform-index { font: 11px var(--mono); color: var(--accent); padding-top: 6px; }
.reforms h3 { font-size: 24px; margin: 0 0 10px; }
.reforms p { font-size: 16px; margin: 0; }
.comparison-bars { margin-top: 22px; }
.comparison-bars > div { display: grid; grid-template-columns: 125px 1fr 32px; align-items: center; gap: 15px; margin-top: 10px; font: 10px/1.5 var(--sans); }
.bar-track { display: block; height: 8px; background: #d2d9cd; }
.bar-track span { display: block; height: 100%; background: var(--ink); }
.comparison-bars > div:last-child .bar-track span { background: var(--accent); }
.field-kit { list-style: none; counter-reset: kit; padding: 0; margin: 30px 0; }
.field-kit li { position: relative; counter-increment: kit; border-top: 1px solid var(--rule); padding: 24px 0 24px 44px; }
.field-kit li::before { content: "0" counter(kit); position: absolute; left: 0; top: 29px; color: var(--accent); font: 11px var(--mono); }
.field-kit h3 { margin: 0 0 9px; font-size: 23px; }
.field-kit p { margin: 0; font-size: 16px; }
.closing-thought { text-align: center; padding: 46px 25px; margin-top: 30px; background: var(--ink); color: var(--paper); }
.closing-thought .small-star { color: #d59a78; font-size: 32px; }
.closing-thought p { font-size: clamp(26px, 3vw, 39px); line-height: 1.2; letter-spacing: -.5px; margin: 22px 0; }
.closing-thought em { color: #dfae8e; }
.closing-thought div { max-width: 390px; margin: 0 auto; font: 12px/1.9 var(--sans); color: #d6dbcf; }
.share-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 25px; }
#share-status { width: 100%; font: 11px var(--sans); color: var(--muted); }
.reading-chapter { border-bottom: 0; }
.reading-paths { margin: 32px 0 40px; border-top: 1px solid var(--rule); }
.reading-paths > a { display: grid; grid-template-columns: 1fr 20px; gap: 2px 15px; text-decoration: none; padding: 19px 0; border-bottom: 1px solid var(--rule); }
.reading-paths a > span:first-child { grid-column: 1; font: 9px/1.7 var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.reading-paths strong { font-weight: 400; font-size: 19px; }
.reading-paths a > span:last-child { grid-column: 2; grid-row: 1/3; align-self: center; color: var(--accent); }
.chapter .sources-title { font-size: 29px; margin-bottom: 20px; }
.source-tools { display: grid; grid-template-columns: 1fr 160px; gap: 8px 10px; padding: 20px 0; border-top: 1px solid var(--rule); }
.source-tools > label:not(.sr-only) { grid-column: 1/-1; font: 10px var(--sans); }
.source-tools input, .source-tools select { min-width: 0; width: 100%; padding: 12px; min-height: 44px; border: 1px solid var(--rule); background: transparent; color: var(--ink); border-radius: 0; font: 12px var(--sans); }
.source-tools input::placeholder { color: var(--muted); }
.source-tools p { grid-column: 1/-1; font: 10px var(--mono); color: var(--muted); margin: 5px 0 0; }
.sources { list-style: none; margin: 0; padding: 0; }
.sources li { padding: 23px 0; border-top: 1px solid var(--rule); scroll-margin-top: 25px; }
.sources li:target { background: var(--green-pale); box-shadow: -12px 0 var(--green-pale), 12px 0 var(--green-pale); }
.source-meta { display: block; color: var(--muted); font-size: 8px; letter-spacing: .7px; margin-bottom: 7px; }
.sources li > a { font-size: 19px; line-height: 1.35; display: block; text-decoration: none; }
.sources li > a:hover { text-decoration: underline; }
.sources li > a span { color: var(--accent); white-space: nowrap; }
.sources li p { font: 12px/1.85 var(--sans); color: var(--muted); margin: 9px 0 0; }
#no-sources { font: 14px/1.7 var(--sans); padding: 30px 0; }
.editorial-note { padding-top: 28px; margin-top: 20px; border-top: 1px solid var(--ink); }
.editorial-note p:not(.eyebrow) { font: 12px/1.9 var(--sans); color: var(--muted); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 35px; border-top: 1px solid var(--ink); padding: 35px 0 45px; }
.site-footer .wordmark { font-size: 26px; }
.site-footer p { font: italic 14px/1.6 var(--serif); color: var(--muted); margin: 0; }
.site-footer > a:last-child { font: 11px var(--sans); text-decoration: none; }
@media (min-width: 1440px) {
  .primer { padding-right: 90px; }
  .hero { gap: 70px; }
}
@media (max-width: 1100px) {
  .masthead, .hero, .orientation, .reading-layout, .site-footer { width: calc(100% - 64px); }
  .hero { gap: 15px; padding: 65px 0; }
  .reading-layout { grid-template-columns: 200px minmax(0, 1fr); gap: 42px; }
  .primer { padding-right: 0; }
  .contents-inner { padding-right: 15px; }
  .contents nav a { font-size: 11px; gap: 8px; }
  .hero-actions { gap: 15px; }
  .standfirst { font-size: 20px; }
  .desktop-break { display: none; }
  .stat-pair > div { display: block; }
  .stat-number { display: block; margin-bottom: 10px; }
}
@media (max-width: 800px) {
  body { font-size: 17px; }
  .masthead, .hero, .orientation, .reading-layout, .site-footer { width: calc(100% - 44px); }
  .masthead { padding: 22px 0; }
  .wordmark { font-size: 28px; }
  .masthead nav { gap: 18px; font-size: 11px; }
  .masthead nav a:nth-child(2) { display: none; }
  .hero { gap: 20px; padding: 55px 0; }
  h1 { font-size: 70px; letter-spacing: -3.5px; }
  .hero .eyebrow { font-size: 9px; letter-spacing: .8px; }
  .hero-description { font-size: 12px; }
  .hero-actions { flex-wrap: wrap; gap: 12px; }
  .hero .button { font-size: 11px; }
  .hero-figure figcaption { font-size: 10px; margin-inline: 5px; }
  .orientation p { font-size: 14px; }
  .orientation > a { font-size: 10px; }
  .reading-layout { display: block; }
  .contents { padding: 30px 0; border-right: 0; border-bottom: 1px solid var(--rule); }
  .contents-inner { position: static; padding: 0; }
  .contents .eyebrow { margin-bottom: 15px; }
  .contents ol { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 20px; }
  .contents li { margin: 0; }
  .contents nav a { font-size: 12px; }
  .contents-note, .reading-progress, .back-top { display: none; }
  .primer { max-width: 660px; margin: 0 auto; }
  .chapter { padding: 55px 0; }
  h2 { font-size: 53px; }
  .lead { font-size: 22px; }
  .site-footer { flex-wrap: wrap; gap: 22px; }
  .site-footer > a:last-child { width: 100%; }
}
@media (max-width: 560px) {
  .masthead, .hero, .orientation, .reading-layout, .site-footer { width: calc(100% - 36px); }
  .masthead { gap: 10px; }
  .wordmark { font-size: 25px; }
  .masthead nav a { display: none; }
  .masthead nav a:last-child { display: block; font-size: 10px; }
  .masthead nav a:last-child span { display: none; }
  .hero { grid-template-columns: 1fr; padding: 45px 0 28px; gap: 20px; }
  .hero .eyebrow { margin-bottom: 22px; font-size: 9px; }
  h1 { font-size: clamp(65px, 17vw, 90px); margin-bottom: 24px; }
  .standfirst { font-size: 21px; max-width: 360px; }
  .hero-description { font-size: 13px; max-width: 360px; margin-bottom: 22px; }
  .hero-actions { gap: 20px; }
  .hero-figure { width: min(100%, 355px); justify-self: center; margin-top: 2px; }
  .hero-figure figcaption { font-size: 11px; padding-top: 12px; }
  .orientation { display: block; padding: 18px 0; }
  .orientation > a { display: inline-block; margin-top: 8px; font-size: 11px; }
  .orientation .eyebrow { font-size: 8px; }
  .contents ol { gap: 0 12px; }
  .contents nav a { font-size: 11px; gap: 6px; }
  .chapter { padding: 45px 0; }
  .chapter-label { font-size: 8px; letter-spacing: .6px; margin-bottom: 22px; gap: 10px; }
  h2 { font-size: 46px; letter-spacing: -1.5px; margin-bottom: 24px; }
  .lead { font-size: 21px; }
  .chapter h3 { font-size: 25px; }
  .definition, .evidence-note { padding: 22px 20px; }
  .definition > p { font-size: 19px; }
  .timeline > li { grid-template-columns: 1fr; gap: 8px; padding-left: 24px; padding-bottom: 29px; }
  .timeline > li::before { left: 3px; }
  .timeline > li::after { left: 0; }
  .timeline-date { font-size: 10px; }
  .timeline h3 { font-size: 23px; }
  .takeaway { font-size: 23px; }
  summary { font-size: 18px; gap: 12px; }
  .details-body { padding-left: 0; }
  .experiment { padding: 20px 16px 0; margin-inline: 0; }
  .experiment h3 { font-size: 23px; }
  .experiment-heading { gap: 6px; align-items: baseline; }
  .experiment-heading .eyebrow { font-size: 8px; letter-spacing: .5px; }
  .model-label { font-size: 7px; }
  .segmented { display: flex; }
  .segmented button { flex: 1; font-size: 10px; padding: 9px 8px; }
  .outcomes { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .outcome { font-size: 9px; }
  .readout { font-size: 12px; }
  .two-definitions { grid-template-columns: 1fr; gap: 18px; }
  .stat-pair { gap: 22px; }
  .stat-number { font-size: 48px; }
  .comparison-bars > div { grid-template-columns: 110px 1fr 28px; gap: 8px; font-size: 9px; }
  .reforms > li { gap: 10px; }
  .reforms h3, .field-kit h3 { font-size: 22px; }
  .field-kit li { padding-left: 33px; }
  .closing-thought { padding: 35px 18px; }
  .closing-thought p { font-size: 30px; }
  .source-tools { grid-template-columns: 1fr; }
  .source-tools select { width: auto; }
  .site-footer { padding-top: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  @page { margin: 18mm; }
  :root { --paper: #fff; --ink: #17271f; --muted: #4c554e; --rule: #bbb; }
  body { font-size: 11pt; line-height: 1.55; }
  .masthead, .hero, .orientation, .reading-layout, .site-footer { width: 100%; }
  .masthead { padding: 0 0 12pt; }
  .masthead nav, .contents, .orientation, .hero-actions, .js-controls, .skip-link, .site-footer > a:last-child { display: none !important; }
  .hero { padding: 28pt 0; gap: 20pt; }
  h1 { font-size: 50pt; letter-spacing: -2pt; }
  .standfirst { font-size: 14pt; }
  .hero-description { font-size: 9pt; }
  .reading-layout { display: block; }
  .primer { padding: 0; max-width: none; }
  .chapter { padding: 24pt 0; }
  h2 { font-size: 32pt; }
  .lead { font-size: 14pt; }
  .chapter h3 { font-size: 17pt; }
  h2, h3, h4, .chapter-label { break-after: avoid; }
  figure, .evidence-note, .definition, .timeline li, .sources li, .field-kit li { break-inside: avoid; }
  .experiment, .evidence-note, .definition, .closing-thought { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .experiment { max-width: 550px; margin: 20pt auto; }
  details:not([open]) > .details-body { display: block !important; content-visibility: visible !important; }
  .funding-models summary { font-size: 13pt; }
  .disclosure-icon { display: none; }
  .details-body, .timeline p, .reforms p, .field-kit p { font-size: 10pt; }
  .sources li { display: list-item !important; }
  .sources li > a { font-size: 12pt; }
  .sources li p { font-size: 9pt; }
  a { text-decoration: none; }
  .sources li > a::after { content: " (" attr(href) ")"; display: block; overflow-wrap: anywhere; font: 8pt/1.4 var(--sans); color: var(--muted); margin-top: 5pt; }
  .source-tools, #no-sources, .reading-paths { display: none !important; }
  .closing-thought { margin-top: 20pt; }
  .site-footer .wordmark { font-size: 18pt; }
}