:root {
  --ink: #171d24;
  --muted: #56616d;
  --paper: #ffffff;
  --soft: #f3f5f6;
  --line: #d7dde1;
  --heat: #b43a32;
  --heat-dark: #842821;
  --cool: #246d78;
  --blue: #2d5f9a;
  --night: #18232e;
  --page: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0;
}

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

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus-visible {
  color: var(--heat-dark);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 1.25rem;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4.25rem;
  font-weight: 700;
}

h2 {
  margin-bottom: 1.25rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.65rem;
  font-weight: 700;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.15rem;
  font-weight: 750;
}

.page-width {
  width: min(calc(100% - 3rem), var(--page));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.55rem 0.8rem;
  background: #fff;
  color: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 66px;
  padding: 0 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: var(--night);
  color: #fff;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  width: max-content;
  font-weight: 750;
}

.brand-mark {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  object-fit: contain;
}

.site-header nav {
  display: flex;
  gap: 1.6rem;
  font-size: 0.88rem;
}

.site-header nav a {
  opacity: 0.82;
}

.site-header nav a:hover,
.site-header nav a:focus-visible,
.header-link:hover,
.header-link:focus-visible {
  opacity: 1;
  color: #fff;
}

.header-link {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  min-height: 44px;
  padding: 0.44rem 0.95rem;
  border: 1px solid var(--heat);
  border-radius: 3px;
  background: var(--heat);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 750;
}

.header-code:hover,
.header-code:focus-visible {
  border-color: #fff;
  background: #fff;
  color: var(--night);
}

.hero {
  position: relative;
  height: 82svh;
  min-height: 630px;
  max-height: 760px;
  overflow: hidden;
  background: var(--night);
  color: #fff;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: right top;
}

.hero-shade {
  background: linear-gradient(90deg, rgba(10, 17, 24, 0.68) 0%, rgba(10, 17, 24, 0.6) 58%, rgba(10, 17, 24, 0.14) 78%, transparent 88%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding: 3.5rem 0 4.5rem;
}

.eyebrow {
  margin-bottom: 0.85rem;
  color: #ffd8d2;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--heat-dark);
}

.hero-summary {
  max-width: 760px;
  margin-bottom: 1.1rem;
  font-size: 1.24rem;
  line-height: 1.55;
}

.hero-scope {
  max-width: 760px;
  margin-bottom: 1.2rem;
  padding-left: 0.95rem;
  border-left: 3px solid #ef7569;
  color: #eef2f3;
  font-size: 0.96rem;
}

.authors {
  margin-bottom: 0;
  color: #dce3e6;
  font-size: 0.88rem;
}

.hero-credit {
  position: absolute;
  right: 1.25rem;
  bottom: 0.85rem;
  z-index: 2;
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.7rem;
}

.pressure-section,
.framework-section,
.findings-section,
.notebooks-section,
.context-section {
  padding: 6rem 0;
}

.section-intro {
  max-width: 760px;
  margin-bottom: 3.2rem;
}

.section-intro.wide {
  max-width: 900px;
}

.pressure-section .section-intro,
.framework-section .section-intro {
  max-width: none;
}

.pressure-section .section-intro > p:last-child {
  max-width: 760px;
}

.framework-section .section-intro > p:last-child {
  max-width: 900px;
}

.section-intro > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.pressure-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.pressure-grid article {
  min-height: 365px;
  padding: 1.5rem 1.6rem 1.7rem;
  border: 1px solid var(--line);
  border-top: 4px solid var(--heat);
  border-radius: 6px;
  background: #fff;
}

.pressure-grid article + article {
  padding-left: 1.6rem;
}

.pressure-grid article:nth-child(2) {
  border-top-color: var(--cool);
}

.pressure-grid article:nth-child(3) {
  border-top-color: var(--blue);
}

.pressure-grid article:nth-child(2) .signal-number {
  color: var(--cool);
}

.pressure-grid article:nth-child(3) .signal-number {
  color: var(--blue);
}

.pressure-top {
  display: flex;
  min-height: 154px;
  margin-bottom: 1.35rem;
  align-items: flex-start;
  justify-content: space-between;
}

.pressure-top img {
  width: 150px;
  height: 150px;
  object-fit: contain;
}

.pressure-grid p,
.finding-grid p,
.notebook-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.signal-number {
  display: block;
  margin: 0;
  color: var(--heat);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2rem;
  font-weight: 700;
}

.framework-section {
  background: var(--soft);
}

.research-figure {
  margin: 0;
}

.research-figure a {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
}

.research-figure img {
  width: 100%;
  height: auto;
}

.mobile-framework {
  display: none;
}

.research-figure figcaption {
  max-width: 920px;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.method-section {
  padding: 5.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.method-layout,
.scope-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 6rem;
  align-items: start;
}

.method-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.method-steps li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 1rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--line);
}

.method-steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.method-steps li > span {
  color: var(--heat);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
  font-weight: 700;
}

.method-steps p {
  margin-bottom: 0;
  color: var(--muted);
}

.results-figure {
  margin-bottom: 3.8rem;
}

.finding-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.3rem;
}

.finding-grid article {
  padding-top: 1.35rem;
  border-top: 4px solid var(--cool);
}

.finding-grid article:nth-child(2) {
  border-top-color: var(--blue);
}

.finding-grid article:nth-child(3) {
  border-top-color: var(--heat);
}

.scope-section {
  padding: 5.8rem 0;
  border-top: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.scope-section h2 {
  color: var(--ink);
}

.scope-copy {
  padding-left: 2rem;
  border-left: 2px solid var(--heat);
}

.scope-copy p:last-child {
  margin-bottom: 0;
}

.notebook-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.notebook-grid article {
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 1.8rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.notebook-grid article > a {
  margin-top: auto;
  padding-top: 1.4rem;
  font-size: 0.9rem;
  font-weight: 750;
}

.notebook-type {
  margin-bottom: 1.8rem !important;
  color: var(--heat-dark) !important;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.context-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}

.context-heading {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 6rem;
  align-items: end;
  margin-bottom: 3.2rem;
}

.context-heading h2 {
  margin-bottom: 0;
}

.context-heading > p {
  margin-bottom: 0.2rem;
  color: var(--muted);
  font-size: 1.04rem;
}

.context-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.4rem;
}

.context-stats article {
  padding-top: 1.35rem;
  border-top: 4px solid var(--heat);
}

.context-stats article:nth-child(2) {
  border-top-color: var(--cool);
}

.context-stats article:nth-child(3) {
  border-top-color: var(--blue);
}

.context-stats strong {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--heat-dark);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.55rem;
  line-height: 1;
}

.context-stats article:nth-child(2) strong {
  color: var(--cool);
}

.context-stats article:nth-child(3) strong {
  color: var(--blue);
}

.context-stats p {
  min-height: 5.4em;
  margin-bottom: 0.8rem;
  color: var(--muted);
}

.context-stats a {
  font-size: 0.82rem;
  font-weight: 750;
}

.context-bridge {
  max-width: 920px;
  margin: 3rem 0 0;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 1.04rem;
}

.site-footer {
  padding: 3.5rem 0 2rem;
  background: #101820;
  color: #d9e0e3;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
}

.footer-layout strong {
  color: #fff;
}

.footer-layout p {
  margin: 0.35rem 0 0;
  color: #aebbc1;
  font-size: 0.86rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem 1.4rem;
}

.footer-links a {
  color: #fff;
  font-size: 0.86rem;
}

.credit-line {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.credit-line p {
  margin: 0;
  color: #91a1a9;
  font-size: 0.72rem;
}

.credit-line a {
  color: inherit;
}

@media (max-width: 900px) {
  h1 {
    font-size: 3.2rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-header nav {
    display: none;
  }

  .desktop-framework {
    display: none !important;
  }

  .mobile-framework {
    display: grid;
    gap: 0.75rem;
  }

  .mobile-framework a {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .pressure-grid,
  .finding-grid,
  .notebook-grid,
  .context-stats {
    grid-template-columns: 1fr;
  }

  .pressure-grid article {
    min-height: 0;
    padding: 1.4rem 1.5rem 1.55rem;
  }

  .pressure-grid article + article {
    padding-left: 1.5rem;
  }

  .pressure-top {
    min-height: 132px;
    margin-bottom: 1rem;
  }

  .pressure-top img {
    width: 128px;
    height: 128px;
  }

  .method-layout,
  .scope-layout,
  .context-heading {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .context-stats {
    gap: 1.8rem;
  }

  .context-stats p {
    min-height: 0;
  }

  .scope-copy {
    padding-top: 1.6rem;
    padding-left: 0;
    border-top: 2px solid var(--heat);
    border-left: 0;
  }

  .notebook-grid article {
    min-height: 230px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .page-width {
    width: min(calc(100% - 2rem), var(--page));
  }

  .site-header {
    min-height: 58px;
    padding: 0 1rem;
  }

  .header-link {
    font-size: 0.8rem;
  }

  .hero {
    height: 82svh;
    min-height: 640px;
  }

  .hero-inner {
    padding: 2.5rem 0 4rem;
  }

  .hero-summary {
    font-size: 1.06rem;
  }

  .hero-credit {
    right: 0.75rem;
    bottom: 0.55rem;
    left: 0.75rem;
    text-align: right;
  }

  .pressure-section,
  .framework-section,
  .findings-section,
  .notebooks-section,
  .context-section,
  .method-section,
  .scope-section {
    padding: 3.5rem 0;
  }

  .section-intro {
    margin-bottom: 2.3rem;
  }

  .research-figure {
    margin-right: -1rem;
    margin-left: -1rem;
  }

  .research-figure a {
    border-right: 0;
    border-left: 0;
  }

  .mobile-framework a {
    overflow-x: auto;
  }

  .mobile-framework img {
    width: 680px;
    max-width: none;
  }

  .results-figure > a {
    overflow-x: auto;
  }

  .results-figure img {
    width: 780px;
    max-width: none;
  }

  .research-figure figcaption {
    margin-right: 1rem;
    margin-left: 1rem;
  }

  .footer-layout,
  .credit-line {
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 360px) {
  h1 {
    font-size: 2.1rem;
  }

  .hero {
    height: auto;
    max-height: none;
  }

  .hero-inner {
    height: auto;
    min-height: 640px;
    padding: 1.5rem 0 5.75rem;
  }

  .hero-summary {
    font-size: 1rem;
    line-height: 1.5;
  }

  .hero-scope {
    font-size: 0.9rem;
  }
}

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