@font-face {
  font-family: Heebo;
  src: url("assets/heebo.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --paper: #fff;
  --wash: #f1f5f8;
  --ink: #21150b;
  --secondary: #3f5159;
  --steel: #23424f;
  --pale: #bfd8eb;
  --coral: #cc4729;
  --green: #5e7a4f;
  --line: #d4dee3;
  --header: rgba(255, 255, 255, 0.97);
  --soft-coral: #f9eee9;
  --font: Heebo, "Arial", sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --paper: #172027;
  --wash: #101a20;
  --ink: #f0f2ef;
  --secondary: #b9c7cd;
  --steel: #bfd8eb;
  --pale: #2e5b6e;
  --coral: #f0a78c;
  --green: #b8cb98;
  --line: #3b505a;
  --header: rgba(23, 32, 39, 0.98);
  --soft-coral: #322923;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 18px/1.85 var(--font);
  letter-spacing: 0;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
a {
  color: var(--steel);
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}
a:hover {
  color: var(--coral);
}
button {
  font: inherit;
  cursor: pointer;
}
button,
summary,
a {
  touch-action: manipulation;
}
button:focus-visible,
summary:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 5px;
}
[hidden] {
  display: none !important;
}
::selection {
  background: #bfd8eb;
  color: #21150b;
}
.skip {
  position: fixed;
  top: -100px;
  right: 20px;
  z-index: 100;
  background: var(--paper);
  padding: 12px;
}
.skip:focus {
  top: 8px;
}
.masthead {
  height: 78px;
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 10px 4.5%;
  background: var(--header);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: block;
  flex-shrink: 0;
}
.brand img {
  display: block;
  width: 139px;
  height: auto;
}
.logo-dark {
  display: none;
}
:root[data-theme="dark"] .logo-light {
  display: none;
}
:root[data-theme="dark"] .logo-dark {
  display: block;
}
.header-label {
  font-size: 14px;
  color: var(--secondary);
  border-inline-start: 1px solid var(--line);
  padding-inline-start: 26px;
}
.header-actions {
  display: flex;
  gap: 8px;
  margin-inline-start: auto;
}
.icon-button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid transparent;
  color: var(--steel);
  border-radius: 4px;
}
.icon-button:hover {
  background: var(--wash);
  border-color: var(--line);
}
.icon-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-button .sun {
  display: none;
}
:root[data-theme="dark"] .moon {
  display: none;
}
:root[data-theme="dark"] .sun {
  display: block;
}
.contents-toggle {
  display: none;
}
.progress-track {
  height: 3px;
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  background: transparent;
}
.progress-track span {
  display: block;
  background: var(--coral);
  width: 0;
  height: 100%;
  margin-inline-start: 0;
  transition: width 0.1s linear;
}
.hero {
  position: relative;
  min-height: 690px;
  height: calc(100svh - 158px);
  max-height: 850px;
  overflow: hidden;
  background: #f5f6f3;
  color: #21150b;
  isolation: isolate;
}
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 58%;
  z-index: -1;
}
.hero-copy {
  position: relative;
  width: min(1240px, 91%);
  margin: auto;
  padding-block: 62px 245px;
}
.hero-copy > * {
  max-width: 590px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--coral);
  margin: 0 0 18px;
}
.hero .eyebrow {
  color: #a33b23;
}
.hero h1 {
  font-size: 58px;
  line-height: 1.22;
  font-weight: 700;
  margin: 0 0 24px;
  color: #23424f;
}
.hero-deck {
  font-size: 21px;
  line-height: 1.7;
  margin: 0 0 24px;
  max-width: 520px;
}
.start-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #23424f;
  font-size: 16px;
  font-weight: 600;
}
.start-link svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}
.hero-meta {
  font-size: 12px;
  color: #3f5159;
  margin-top: 16px;
}
.image-note {
  position: absolute;
  bottom: 14px;
  left: 4.5%;
  font-size: 11px;
  color: #23424f;
  background: rgba(255, 255, 255, 0.85);
  padding: 1px 7px;
}
.reading-layout {
  display: grid;
  grid-template-columns: 244px minmax(0, 1fr);
  max-width: 1512px;
  margin: auto;
}
.chapter-rail {
  border-inline-end: 1px solid var(--line);
  padding: 52px 26px;
}
.chapter-rail nav {
  position: sticky;
  top: 114px;
}
.rail-heading {
  font-size: 12px;
  color: var(--secondary);
  margin: 0 0 18px;
}
.chapter-rail ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 4px;
}
.chapter-rail li a {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 13px;
  text-decoration: none;
  padding: 9px 8px;
  border-inline-start: 2px solid transparent;
  transition:
    color 0.15s,
    border-color 0.15s;
}
.chapter-rail li a span {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--secondary);
}
.chapter-rail li a[aria-current="true"] {
  color: var(--coral);
  border-color: var(--coral);
  font-weight: 600;
}
.glossary-link {
  font-size: 12px;
  display: block;
  margin-top: 28px;
}
.story {
  min-width: 0;
}
.chapter {
  padding: 72px 8%;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 90px;
}
.chapter > * {
  max-width: 800px;
  margin-inline: auto;
}
.chapter-number {
  font-size: 12px;
  font-weight: 600;
  color: var(--coral);
  margin-block: 0 20px;
}
.chapter h2 {
  font-size: 38px;
  line-height: 1.35;
  color: var(--steel);
  font-weight: 650;
  margin-block: 0 26px;
}
.chapter p {
  margin-block: 0 22px;
}
.chapter .lead {
  font-size: 23px;
  line-height: 1.75;
  font-weight: 400;
  margin-bottom: 26px;
}
.chapter-tinted {
  background: var(--wash);
}
.chapter h3 {
  font-size: 23px;
  line-height: 1.5;
  color: var(--steel);
  margin-block: 0 15px;
}
.chapter h4 {
  font-size: 18px;
  margin: 0 0 10px;
}
.chapter .takeaway {
  font-size: 23px;
  color: var(--steel);
  padding-inline-start: 24px;
  border-inline-start: 3px solid var(--coral);
  margin-block: 40px 30px;
}
.chapter blockquote {
  margin-block: 42px 5px;
  padding: 24px 0;
  border-top: 2px solid var(--coral);
  font-size: 26px;
  line-height: 1.6;
  color: var(--steel);
}
details {
  border-top: 1px solid var(--line);
  margin-block: 0;
}
details:last-of-type {
  border-bottom: 1px solid var(--line);
}
summary {
  list-style: none;
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: 19px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--steel);
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: "+";
  font:
    400 24px/1 Arial,
    sans-serif;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
  color: var(--coral);
}
details[open] > summary::after {
  content: "−";
}
details > div {
  padding: 0 0 16px;
  font-size: 16px;
  color: var(--secondary);
}
details p:last-child {
  margin-bottom: 5px;
}
details dl {
  margin-top: 0;
}
dt {
  font-weight: 600;
  color: var(--steel);
  margin-top: 16px;
}
dd {
  margin-inline-start: 0;
  margin-block: 4px 14px;
}
.chapter .source-note {
  font-size: 12px;
  line-height: 1.8;
  color: var(--secondary);
  margin-block: 18px 0;
}
.scrolly {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 35px;
  margin-block: 45px;
  max-width: 1000px;
  position: relative;
}
.sticky-figure {
  position: relative;
  min-width: 0;
}
.ecosystem {
  position: sticky;
  top: 120px;
  margin: 0;
  background: var(--wash);
  padding: 20px 12px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
}
.chapter-tinted .ecosystem {
  background: var(--paper);
}
.ecosystem-head {
  display: flex;
  justify-content: space-between;
  padding-inline: 8px;
  gap: 8px;
}
.ecosystem-head .eyebrow {
  margin: 0;
}
.ecosystem-head > span:last-child {
  font-size: 11px;
  color: var(--secondary);
}
.system-map {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
.map-lines {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 6 5;
}
.map-node circle,
.map-node rect {
  fill: var(--paper);
  stroke: var(--line);
  stroke-width: 2;
  transition:
    fill 0.3s,
    stroke 0.3s;
}
.map-node text {
  font: 600 20px var(--font);
  text-anchor: middle;
  fill: var(--steel);
}
.map-node .map-sub {
  font-size: 12px;
  font-weight: 400;
  fill: var(--secondary);
}
.map-node.active circle,
.map-node.active rect {
  fill: var(--pale);
  stroke: var(--coral);
  stroke-width: 3;
}
.map-person circle {
  fill: var(--soft-coral);
}
figcaption {
  font-size: 12px;
  color: var(--secondary);
  line-height: 1.7;
}
figure figcaption {
  margin-top: 14px;
}
.scene-step {
  padding: 25px 0 60px;
  min-height: 320px;
  border-top: 1px solid var(--line);
}
.scene-step:last-child {
  padding-bottom: 15px;
}
.scene-step .step-count {
  font-size: 12px;
  color: var(--coral);
  display: block;
  margin-bottom: 10px;
}
.scene-step h3 {
  font-size: 22px;
}
.scene-step p {
  font-size: 17px;
  margin: 0;
}
.scene-step.is-active h3 {
  color: var(--coral);
}
.three-lenses {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-block: 36px;
}
.three-lenses > div {
  padding-top: 20px;
  border-top: 3px solid var(--coral);
}
.three-lenses > div:nth-child(2) {
  border-color: var(--steel);
}
.three-lenses > div:nth-child(3) {
  border-color: var(--green);
}
.three-lenses span {
  font-size: 16px;
  font-weight: 600;
  color: var(--steel);
}
.three-lenses p {
  font-size: 15px;
  margin: 10px 0 0;
}
.research-photo {
  margin-block: 32px;
}
.research-photo img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/8;
  object-fit: cover;
  display: block;
}
.research-threads {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-block: 30px;
}
.research-threads span {
  padding: 12px 15px;
  font-size: 14px;
  color: var(--steel);
}
.research-threads span:not(:last-child) {
  border-inline-end: 1px solid var(--line);
}
.question-diagram {
  margin-block: 32px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.question-pair {
  display: grid;
  grid-template-columns: 1fr 35px 1fr;
  align-items: center;
  gap: 20px;
}
.question-pair .diagram-label {
  font-size: 12px;
  color: var(--coral);
  display: block;
  margin-bottom: 10px;
}
.question-pair strong {
  font-size: 21px;
  color: var(--steel);
  font-weight: 600;
}
.question-pair p {
  font-size: 15px;
  margin: 9px 0 0;
}
.comparison-mark {
  font-size: 28px;
  color: var(--coral);
  text-align: center;
}
.mini-exhibit {
  margin-block: 36px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
}
.mini-exhibit .eyebrow {
  font-size: 11px;
}
.mini-exhibit h3 {
  font-size: 24px;
}
.example-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-block: 24px;
}
.example-values > div {
  border-inline-start: 2px solid var(--pale);
  padding-inline-start: 15px;
}
.example-values span {
  display: block;
  font-size: 12px;
  color: var(--secondary);
}
.example-values strong {
  display: block;
  font-size: 30px;
  font-weight: 600;
  color: var(--steel);
  margin-top: 8px;
}
.example-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  margin-top: 28px;
}
.example-tabs button {
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 15px;
  font-size: 14px;
  background: transparent;
  color: var(--secondary);
  min-height: 48px;
}
.example-tabs button[aria-selected="true"] {
  border-color: var(--coral);
  color: var(--coral);
  font-weight: 600;
}
.example-panel {
  min-height: 172px;
  padding: 24px 0 0;
}
.example-panel p {
  font-size: 16px;
  margin: 0;
}
.data-layers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding-block: 28px;
  margin-block: 30px;
  border-block: 1px solid var(--line);
}
.data-layers div + div {
  border-inline-start: 1px solid var(--line);
  padding-inline-start: 20px;
}
.data-layers span {
  display: block;
  color: var(--coral);
  font-size: 12px;
  margin-bottom: 10px;
}
.data-layers strong {
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  display: block;
}
.failure-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  margin-block: 32px;
  position: relative;
  padding-inline-start: 24px;
  border-inline-start: 2px solid var(--pale);
}
.failure-story > div {
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
}
.failure-story span {
  font-size: 12px;
  color: var(--secondary);
}
.failure-story p {
  font-size: 19px;
  font-weight: 500;
  margin: 6px 0 0;
}
.failure-story .flow-arrow {
  display: none;
}
.failure-story .failure-conclusion {
  color: var(--coral);
}
.tensions {
  padding-top: 28px;
  margin-top: 35px;
  border-top: 1px solid var(--line);
}
.tensions p {
  font-size: 16px;
}
.demand-chain {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-block: 32px;
  padding-block: 24px;
  border-block: 1px solid var(--line);
}
.demand-chain > div {
  padding: 10px 0 10px 12px;
  color: var(--steel);
  font-size: 15px;
  font-weight: 500;
}
.demand-chain strong,
.demand-chain div span {
  display: block;
}
.demand-chain div span {
  color: var(--secondary);
  font-weight: 400;
  margin-top: 6px;
}
.demand-chain figcaption {
  grid-column: 1 / -1;
  margin-top: 4px;
}
.closing {
  border-top: 4px solid var(--coral);
  background: var(--wash);
}
.conversation-prompts {
  margin-block: 32px;
}
.conversation-prompts ul {
  padding-inline-start: 24px;
}
.conversation-prompts li {
  padding-inline-start: 5px;
  margin-bottom: 10px;
}
.no-homework {
  padding-block: 24px;
  border-block: 1px solid var(--line);
  font-size: 17px;
}
.glossary h2 {
  font-size: 30px;
}
.sources {
  padding-inline-start: 20px;
}
.sources li {
  margin-bottom: 12px;
}
.footer {
  padding: 40px 8%;
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--secondary);
}
.footer img {
  width: 108px;
  height: auto;
}
.footer p {
  margin: 0;
}
.footer a {
  margin-inline-start: auto;
}
@media (min-width: 1450px) {
  .scrolly {
    margin-inline: -25px;
    max-width: none;
  }
  .chapter {
    padding-inline: 9%;
  }
}
@media (max-width: 1100px) {
  .reading-layout {
    grid-template-columns: 190px minmax(0, 1fr);
  }
  .chapter-rail {
    padding-inline: 14px;
  }
  .chapter-rail li a {
    font-size: 12px;
    gap: 8px;
  }
  .chapter {
    padding-inline: 6%;
  }
  .scrolly {
    gap: 20px;
    grid-template-columns: 1fr 1fr;
  }
  .scene-step {
    min-height: 340px;
  }
  .scene-step h3 {
    font-size: 20px;
  }
  .map-node text {
    font-size: 19px;
  }
  .map-node .map-sub {
    font-size: 12px;
  }
  .hero h1 {
    font-size: 52px;
  }
  .hero-copy > * {
    max-width: 520px;
  }
}
@media (max-width: 820px) {
  .masthead {
    height: 68px;
    padding-inline: 5%;
    gap: 18px;
  }
  .brand img {
    width: 115px;
  }
  .header-label {
    font-size: 12px;
    padding-inline-start: 15px;
  }
  .contents-toggle {
    display: grid;
  }
  .reading-layout {
    display: block;
  }
  .chapter-rail {
    padding: 0;
    border: 0;
  }
  .chapter-rail nav {
    display: none;
    position: fixed;
    inset: 68px 0 auto 0;
    z-index: 25;
    background: var(--paper);
    padding: 24px 6%;
    border-bottom: 1px solid var(--line);
    max-height: calc(100svh - 68px);
    overflow: auto;
    box-shadow: 0 20px 30px #0002;
  }
  .chapter-rail nav.is-open {
    display: block;
  }
  .chapter-rail ol {
    grid-template-columns: 1fr 1fr;
    gap: 6px 20px;
  }
  .chapter-rail li a {
    font-size: 14px;
  }
  .rail-heading {
    font-size: 13px;
  }
  .glossary-link {
    margin-top: 18px;
  }
  .hero {
    min-height: 650px;
    max-height: 780px;
    height: calc(100svh - 125px);
  }
  .hero-copy {
    padding-top: 48px;
    width: 88%;
  }
  .hero h1 {
    font-size: 46px;
  }
  .hero-deck {
    font-size: 20px;
    max-width: 480px;
  }
  .hero-image {
    object-position: 45% 70%;
  }
  .chapter {
    padding: 54px 7%;
  }
  .chapter h2 {
    font-size: 34px;
  }
  .chapter .lead {
    font-size: 21px;
  }
  .chapter > * {
    max-width: 750px;
  }
  .scrolly {
    grid-template-columns: 1fr 1.05fr;
  }
  .ecosystem {
    top: 98px;
    padding: 16px 8px;
  }
  .scene-step {
    min-height: 300px;
  }
  .three-lenses {
    gap: 18px;
  }
}
@media (max-width: 540px) {
  body {
    font-size: 17px;
    line-height: 1.85;
  }
  .header-label {
    display: none;
  }
  .header-actions {
    gap: 4px;
  }
  .icon-button {
    width: 38px;
    height: 38px;
  }
  .hero {
    min-height: 660px;
    height: calc(100svh - 120px);
    max-height: 760px;
  }
  .hero-image {
    object-position: 39% bottom;
    object-fit: cover;
  }
  .hero-copy {
    padding-block: 35px 250px;
    width: 88%;
  }
  .hero h1 {
    font-size: 38px;
    line-height: 1.25;
    margin-bottom: 18px;
  }
  .hero .eyebrow {
    font-size: 11px;
    margin-bottom: 18px;
  }
  .hero-deck {
    font-size: 18px;
    max-width: 100%;
    line-height: 1.8;
  }
  .hero-meta {
    font-size: 10px;
  }
  .hero-copy > * {
    max-width: 100%;
  }
  .start-link {
    font-size: 15px;
  }
  .chapter {
    padding: 44px 6%;
  }
  .chapter-number {
    font-size: 11px;
  }
  .chapter h2 {
    font-size: 29px;
    line-height: 1.4;
  }
  .chapter .lead {
    font-size: 20px;
  }
  .chapter h3 {
    font-size: 22px;
  }
  .chapter .takeaway {
    font-size: 21px;
    padding-inline-start: 18px;
  }
  .chapter blockquote {
    font-size: 23px;
  }
  .scrolly {
    display: block;
    margin-block: 30px;
  }
  .sticky-figure {
    position: sticky;
    top: 68px;
    z-index: 5;
    margin-bottom: 25px;
  }
  .ecosystem {
    position: relative;
    top: auto;
    box-shadow: 0 5px 14px #0001;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 110px;
    column-gap: 8px;
    align-items: center;
  }
  .ecosystem-head {
    grid-column: 1;
    grid-row: 1;
    padding: 0;
    align-self: end;
  }
  .system-map {
    grid-column: 2;
    grid-row: 1/3;
    width: 110px;
  }
  .ecosystem figcaption {
    grid-column: 1;
    grid-row: 2;
    font-size: 10px;
    margin-top: 7px;
    align-self: start;
  }
  .ecosystem-head > span:last-child {
    font-size: 10px;
  }
  .ecosystem-head .eyebrow {
    font-size: 11px;
  }
  .scene-step {
    min-height: 260px;
    padding: 28px 0 45px;
  }
  .scene-step p {
    font-size: 17px;
  }
  .three-lenses {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-block: 28px;
  }
  .three-lenses > div {
    padding-top: 14px;
  }
  .three-lenses p {
    margin-top: 5px;
  }
  .research-photo img {
    aspect-ratio: 4/3;
  }
  .research-threads span {
    font-size: 12px;
    padding: 9px;
  }
  .question-pair {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .comparison-mark {
    transform: rotate(90deg);
    font-size: 22px;
  }
  .question-pair strong {
    font-size: 21px;
  }
  .mini-exhibit {
    padding: 22px 18px;
  }
  .mini-exhibit h3 {
    font-size: 22px;
  }
  .example-values {
    gap: 12px;
  }
  .example-values span {
    font-size: 11px;
  }
  .example-values strong {
    font-size: 24px;
  }
  .example-tabs button {
    font-size: 12px;
    padding-inline: 12px;
  }
  .example-panel {
    min-height: 220px;
  }
  .data-layers {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .data-layers div + div {
    border-inline-start: 0;
    padding-inline-start: 0;
    border-top: 1px solid var(--line);
    padding-top: 16px;
  }
  .data-layers span {
    margin-bottom: 4px;
  }
  .failure-story {
    grid-template-columns: 1fr;
  }
  .demand-chain {
    display: grid;
    grid-template-columns: 1fr;
    text-align: center;
  }
  .demand-chain figcaption {
    text-align: start;
  }
  .chapter-rail ol {
    grid-template-columns: 1fr;
  }
  .footer {
    padding-inline: 6%;
    gap: 16px;
  }
  .footer p {
    font-size: 11px;
  }
  .footer a {
    margin-inline-start: 0;
    flex-basis: 100%;
  }
  summary {
    font-size: 15px;
  }
  .glossary h2 {
    font-size: 27px;
  }
}
.brand .logo-dark {
  display: none;
}
:root[data-theme="dark"] .brand .logo-dark {
  display: block;
}
.hero {
  height: auto;
  min-height: 0;
  max-height: none;
  background: #fff;
  display: flex;
  flex-direction: column;
}
.hero-copy {
  padding-block: 42px 28px;
}
.hero-copy > * {
  max-width: 740px;
}
.hero h1 {
  font-size: 50px;
  margin-bottom: 16px;
}
.hero-deck {
  max-width: 740px;
  font-size: 20px;
  margin-bottom: 16px;
}
.hero-meta {
  margin-bottom: 0;
}
.hero-image {
  position: static;
  inset: auto;
  order: 2;
  z-index: auto;
  height: 340px;
  object-fit: cover;
  object-position: center 59%;
}
.hero .image-note {
  z-index: 1;
}
@media (max-width: 820px) {
  .hero-copy {
    padding-block: 35px 25px;
  }
  .hero h1 {
    font-size: 43px;
  }
  .hero-image {
    height: 300px;
  }
  .chapter-rail nav {
    display: block;
    position: static;
    box-shadow: none;
  }
  .js .chapter-rail nav {
    display: none;
    position: fixed;
  }
  .js .chapter-rail nav.is-open {
    display: block;
  }
}
@media (max-width: 540px) {
  .hero h1 {
    font-size: 35px;
  }
  .hero-deck {
    font-size: 17px;
  }
  .hero-copy {
    padding-block: 27px 22px;
  }
  .hero-image {
    height: 220px;
  }
  .hero .eyebrow {
    margin-bottom: 12px;
  }
  .hero-meta {
    font-size: 11px;
  }
  .ecosystem {
    display: block;
    padding: 10px 12px;
  }
  .ecosystem-head {
    display: flex;
  }
  .system-map {
    width: 100%;
    max-width: 260px;
    margin: 0 auto;
    max-height: 225px;
  }
  .map-node text {
    font-size: 24px;
  }
  .map-node .map-sub {
    font-size: 15px;
  }
  .ecosystem figcaption {
    font-size: 11px;
    margin-top: 0;
  }
  .sticky-figure {
    margin-bottom: 18px;
  }
  .scene-step {
    min-height: 290px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}
@media print {
  html {
    scroll-behavior: auto;
    color-scheme: light;
  }
  body {
    font-size: 11pt;
    background: white;
    color: black;
  }
  .masthead,
  .chapter-rail,
  .hero-image,
  .hero-meta,
  .start-link,
  .image-note,
  .header-actions {
    display: none !important;
  }
  .hero {
    height: auto;
    min-height: 0;
    background: white;
  }
  .hero-copy {
    padding: 15px 0;
    width: 100%;
  }
  .hero h1 {
    font-size: 30pt;
  }
  .hero-deck {
    font-size: 14pt;
  }
  .reading-layout {
    display: block;
  }
  .chapter {
    padding: 25px 0;
    background: white;
    break-inside: auto;
  }
  .chapter h2 {
    font-size: 22pt;
  }
  .chapter .lead {
    font-size: 13pt;
  }
  .chapter p {
    margin-bottom: 12px;
  }
  .chapter * {
    color: black !important;
  }
  .scrolly {
    display: block;
  }
  .ecosystem {
    position: static;
    width: 360px;
    break-inside: avoid;
  }
  .scene-step {
    min-height: 0;
    padding: 15px 0;
  }
  .sticky-figure {
    position: static;
  }
  .research-photo img {
    max-height: 180px;
    object-fit: cover;
  }
  .example-panel {
    min-height: 0;
  }
  .example-tabs {
    display: none;
  }
  .example-panel[hidden] {
    display: block !important;
  }
  details {
    break-inside: avoid;
  }
  details > div {
    display: block !important;
  }
  h2,
  h3,
  summary {
    break-after: avoid;
  }
  a {
    color: black;
  }
  .footer {
    padding: 25px 0;
  }
  .footer .logo-dark {
    display: none !important;
  }
  .footer .logo-light {
    display: block !important;
  }
}