@font-face {
  font-family: 'Inter';
  src: url('./fonts/InterVariable.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #f7f4ee;
  --surface: #fffdfa;
  --text: #151311;
  --muted: #70675f;
  --line: rgba(21, 19, 17, 0.1);
  --line-strong: rgba(21, 19, 17, 0.18);
  --accent: #8e745a;
  --max-width: 1500px;
}

:root[data-theme='dark'] {
  --bg: #12110f;
  --surface: rgba(255, 255, 255, 0.03);
  --text: #f1ede6;
  --muted: #c7bbac;
  --line: rgba(241, 237, 230, 0.12);
  --line-strong: rgba(241, 237, 230, 0.22);
  --accent: #d3ad84;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.frame {
  width: min(var(--max-width), calc(100% - 72px));
  margin: 0 auto;
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(8px);
}

.masthead.is-scrolled {
  border-bottom-color: var(--line-strong);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.brand-mark,
.kicker,
.section-number,
.action-primary,
.evidence-row a,
.feature-figure figcaption a {
  color: var(--accent);
}

.brand-text,
.mastnav,
.nav-link,
.feature-figure figcaption,
.thumb-figure figcaption {
  color: var(--muted);
}

.mastnav {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 12px;
}

.masthead-actions {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 140ms ease, opacity 140ms ease;
}

.theme-toggle:hover {
  color: var(--text);
}

.theme-toggle:focus-visible {
  outline: none;
  color: var(--text);
  opacity: 1;
}

.theme-toggle-glyph {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0;
}

.mastnav a,
.nav-link,
.action-link,
.evidence-row a,
.feature-figure figcaption a {
  transition: color 140ms ease, border-color 140ms ease;
}

.mastnav a:hover,
.nav-link:hover,
.action-link:hover,
.evidence-row a:hover,
.feature-figure figcaption a:hover {
  color: var(--text);
}

.nav-link,
.action-link,
.evidence-row a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section {
  padding: 148px 0;
}

.section-rule {
  border-top: 1px solid var(--line);
}

.hero {
  border-top: none;
  padding-top: 92px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(300px, 0.64fr);
  gap: 124px;
  align-items: start;
}

.kicker,
.section-number {
  display: inline-block;
  margin: 0 0 18px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.hero h1,
.section-head h2,
.wide-head h2,
.closing-grid h2 {
  margin: 0;
  font-size: clamp(3.15rem, 5.9vw, 5.8rem);
  font-weight: 300;
  line-height: 0.93;
  letter-spacing: -0.065em;
  max-width: 11.5ch;
}

.section-head h2,
.wide-head h2,
.closing-grid h2 {
  max-width: 12ch;
  font-size: clamp(2.25rem, 4vw, 4rem);
}

.hero h1 span {
  display: block;
  margin-top: 12px;
}

.lede,
.aside-note,
.editorial-row p,
.principles-grid p,
.capability-row p,
.evidence-row p,
.supporting-copy,
.outcomes-list li {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.95;
}

.lede {
  max-width: 54ch;
  margin: 42px 0 0;
}

.hero-actions {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 42px;
}

.action-link {
  display: inline-flex;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid transparent;
}

.action-link:hover {
  border-bottom-color: var(--line-strong);
}

.hero-aside {
  display: grid;
  gap: 30px;
}

.aside-note {
  max-width: 24rem;
  margin: 0;
}

.audience-note {
  max-width: 18rem;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.audience-note p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.feature-figure,
.thumb-figure {
  margin: 0;
}

.feature-figure img,
.thumb-figure img {
  border: 1px solid var(--line);
}

.feature-figure img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.feature-figure figcaption,
.thumb-figure figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding-top: 12px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.thumb-figure img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.hero-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.26fr) minmax(360px, 0.48fr) minmax(0, 0.26fr);
  gap: 44px;
  margin-top: 84px;
  align-items: start;
}

.thesis-card {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.thesis-card p {
  margin: 0;
  max-width: 15ch;
  font-size: clamp(1.9rem, 2.8vw, 2.9rem);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.05em;
}

.image-essay {
  display: grid;
  gap: 34px;
}

.image-essay-head {
  display: grid;
  grid-template-columns: minmax(220px, 0.28fr) minmax(0, 0.72fr);
  gap: 24px;
  align-items: end;
}

.essay-note {
  max-width: 52ch;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.essay-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.5fr) minmax(220px, 0.23fr) minmax(220px, 0.27fr);
  gap: 28px;
  align-items: start;
}

.essay-grid-two {
  grid-template-columns: minmax(0, 0.58fr) minmax(280px, 0.42fr);
}

.essay-grid-single-offset {
  grid-template-columns: minmax(0, 0.28fr) minmax(280px, 0.34fr) minmax(0, 0.38fr);
}

.image-essay-secondary {
  padding-top: 108px;
  padding-bottom: 108px;
}

.essay-grid-single-offset .essay-figure {
  grid-column: 2;
}

.essay-figure {
  margin: 0;
}

.essay-figure img,
.essay-figure video {
  border: 1px solid var(--line);
  object-fit: cover;
  width: 100%;
  display: block;
}

.essay-landscape img,
.essay-landscape video {
  aspect-ratio: 16 / 10;
}

.essay-square img,
.essay-square video {
  aspect-ratio: 1 / 1;
}

.essay-portrait img,
.essay-portrait video {
  aspect-ratio: 4 / 5;
}

.essay-figure figcaption {
  padding-top: 12px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.proof-flow {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 52px;
}

.proof-card {
  margin: 0;
  display: grid;
  gap: 18px;
}

.proof-card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
}

.proof-card figcaption {
  display: grid;
  gap: 10px;
  padding-top: 4px;
}

.proof-card figcaption span {
  display: inline-block;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.proof-card figcaption p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.95;
}

.editorial-grid,
.closing-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.28fr) minmax(0, 0.72fr);
  gap: 92px;
}

.section-head {
  position: sticky;
  top: 110px;
  align-self: start;
}

.content-flow {
  display: grid;
}

.editorial-row,
.capability-row,
.evidence-row {
  display: grid;
  gap: 18px 40px;
  padding: 38px 0;
  border-top: 1px solid var(--line);
}

.editorial-row:first-child,
.evidence-row:first-child {
  padding-top: 0;
  border-top: none;
}

.editorial-row {
  grid-template-columns: 84px minmax(0, 1fr);
}

.capability-row {
  grid-template-columns: minmax(220px, 0.35fr) minmax(0, 0.65fr);
}

.evidence-row {
  grid-template-columns: minmax(0, 1fr) auto;
}

.editorial-row h3,
.principles-grid h3,
.capability-row h3,
.evidence-row h3 {
  margin: 0;
  max-width: 18ch;
  font-size: 25px;
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.editorial-row p,
.capability-row p,
.evidence-row p {
  margin: 12px 0 0;
  max-width: 50ch;
}

.wide-head {
  max-width: 1040px;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 52px;
  margin-top: 68px;
}

.principles-grid article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.outcomes-list {
  margin: 26px 0 0;
  padding-left: 20px;
  max-width: 46ch;
}

.outcomes-list li + li {
  margin-top: 18px;
}

.inline-link {
  color: var(--accent);
  border-bottom: 1px solid var(--line-strong);
  transition: color 140ms ease, border-color 140ms ease;
}

.inline-link:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}

.wide-head .supporting-copy {
  max-width: 68ch;
  margin: 28px 0 0;
}

.section-head .supporting-copy {
  margin: 28px 0 0;
}

.pilot-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 52px;
}

.pilot-card {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.pilot-card h3 {
  margin: 0;
  max-width: 18ch;
  font-size: 25px;
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.pilot-card p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.95;
}

.cta-panel {
  margin-top: 48px;
  padding: 34px 36px 38px;
  border: 1px solid var(--line-strong);
}

.cta-panel p {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.95;
}

.cta-panel .hero-actions {
  margin-top: 30px;
}

.site-footer {
  display: grid;
  gap: 22px;
  padding: 64px 0 72px;
  border-top: 1px solid var(--line);
}

.footer-ring {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
}

.footer-ring a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 140ms ease;
}

.footer-ring a:hover {
  color: var(--text);
}

.colophon {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
  max-width: 72ch;
}

@media (max-width: 1200px) {
  .hero-grid,
  .hero-strip,
  .image-essay-head,
  .essay-grid,
  .essay-grid-two,
  .essay-grid-single-offset,
  .editorial-grid,
  .closing-grid,
  .principles-grid,
  .proof-flow,
  .pilot-cards,
  .capability-row,
  .evidence-row {
    grid-template-columns: 1fr;
  }

  .essay-grid-single-offset .essay-figure {
    grid-column: auto;
  }

  .section-head {
    position: static;
  }

  .feature-figure img {
    aspect-ratio: 16 / 11;
  }
}

@media (max-width: 860px) {
  .frame {
    width: min(var(--max-width), calc(100% - 28px));
  }

  .masthead {
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 14px;
  }

  .masthead-actions {
    order: 3;
  }

  .mastnav {
    justify-content: flex-start;
    gap: 14px 18px;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 11vw, 4.7rem);
  }

  .section-head h2,
  .wide-head h2,
  .closing-grid h2,
  .thesis-card p {
    font-size: clamp(2rem, 8vw, 3.2rem);
  }

  .editorial-row {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 96px 0;
  }
}

@media (max-width: 560px) {
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
}