@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("assets/fonts/public-sans-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/newsreader-regular-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Newsreader";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/newsreader-italic-latin.woff2") format("woff2");
}

:root {
  --carbon: #0b0c0e;
  --paper: #f3f2ed;
  --white: #ffffff;
  --cobalt: #0647ff;
  --cobalt-dark: #0036cc;
  --fog: #c7c8c5;
  --steel: #62666b;
  --ember: #d45b35;
  --line: rgba(11, 12, 14, 0.24);
  --line-light: rgba(255, 255, 255, 0.28);
  --sans: "Public Sans", Arial, sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-height: 78px;
  --page-pad: max(20px, 4vw);
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); color: var(--carbon); font-family: var(--sans); font-size: 16px; }
body { margin: 0; overflow-x: hidden; background: var(--paper); }
body.menu-open { overflow: hidden; }
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
h1, h2, h3, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
::selection { background: var(--cobalt); color: var(--white); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 12px 16px;
  background: var(--cobalt);
  color: var(--white);
  transform: translateY(-160%);
  transition: transform 180ms ease-out;
}
.skip-link:focus { transform: translateY(0); }

:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 3px; }
.section-pad { padding: 120px var(--page-pad); }
.eyebrow {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  text-transform: uppercase;
}
.section-label { display: flex; align-items: center; gap: 12px; }
.section-label > span {
  display: inline-grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 0.62rem;
}
.section-label.light { color: var(--paper); }
[id] { scroll-margin-top: calc(var(--header-height) + 18px); }
.system-page [id] { scroll-margin-top: calc(var(--header-height) + 68px); }

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 var(--page-pad);
  border-bottom: 1px solid var(--line);
  transition: background 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out;
}
.site-header.is-scrolled,
.site-header-solid { background: rgba(243, 242, 237, 0.96); backdrop-filter: blur(12px); }
.wordmark { display: flex; align-items: center; gap: 11px; width: max-content; font-size: 0.78rem; font-weight: 800; }
.wordmark-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  background: var(--carbon);
  color: var(--paper);
  font-size: 0.7rem;
}
.desktop-nav { display: flex; align-items: center; gap: 22px; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; }
.desktop-nav a, .footer-links a, .system-jump a { display: inline-flex; min-height: 28px; align-items: center; }
.desktop-nav a, .footer-links a { position: relative; }
.desktop-nav a::after, .footer-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease-out;
}
.desktop-nav a:hover::after, .footer-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.header-action {
  justify-self: end;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 0 14px;
  border: 1px solid var(--carbon);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  transition: background 180ms ease-out, color 180ms ease-out;
}
.header-action:hover { background: var(--carbon); color: var(--paper); }
.header-action span { color: var(--cobalt); font-size: 1rem; }
.menu-button, .mobile-nav { display: none; }

.hero {
  position: relative;
  min-height: 760px;
  height: 92vh;
  height: 92svh;
  max-height: 980px;
  overflow: hidden;
  background: #a7a6a2;
  color: var(--carbon);
  border-bottom: 1px solid var(--carbon);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(243, 242, 237, 0.42);
}
.hero-image { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; }
.hero-image picture, .about-image picture, .article-image picture, .imagery-grid picture { display: block; width: 100%; height: 100%; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-meta {
  position: absolute;
  z-index: 4;
  top: calc(var(--header-height) + 26px);
  right: var(--page-pad);
  display: flex;
  gap: 24px;
}
.hero-copy { position: absolute; z-index: 3; inset: 0; padding: 0 var(--page-pad); }
.hero-index { position: absolute; top: 25%; left: var(--page-pad); }
.hero-title {
  position: absolute;
  top: 37%;
  left: var(--page-pad);
  max-width: 6ch;
  font-size: 8.75rem;
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: 0;
}
.hero-title span { display: block; overflow: hidden; padding-bottom: 0.08em; }
.hero-title span::after { content: ""; }
.hero-title [data-hero-line] { opacity: 1; transform: none; }
.js .hero-title [data-hero-line] { opacity: 0; transform: translateY(108%); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.hero-title [data-hero-line]:nth-child(2) { transition-delay: 90ms; }
.hero-title [data-hero-line].is-visible { opacity: 1; transform: translateY(0); }
.hero-intro {
  position: absolute;
  bottom: 46px;
  left: var(--page-pad);
  width: min(390px, 36vw);
}
.hero-intro p { margin-bottom: 24px; font-family: var(--serif); font-size: 1.55rem; line-height: 1.2; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
  border-bottom: 1px solid currentColor;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}
.text-link span { color: var(--cobalt); font-size: 1rem; transition: transform 180ms ease-out; }
.text-link:hover span { transform: translate(3px, -3px); }
.text-link-light span { color: #5f83ff; }
.hero-status {
  position: absolute;
  z-index: 4;
  right: var(--page-pad);
  bottom: 46px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 250px;
  padding: 11px 13px;
  background: var(--carbon);
  color: var(--paper);
}
.status-dot { display: inline-block; flex: 0 0 auto; width: 8px; height: 8px; border-radius: 50%; background: var(--cobalt); box-shadow: 0 0 0 4px rgba(6, 71, 255, 0.2); }

[data-reveal] { opacity: 1; transform: none; }
.js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 650ms var(--ease-out), transform 650ms var(--ease-out); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

.thesis { border-bottom: 1px solid var(--line); }
.thesis-content { display: grid; grid-template-columns: minmax(0, 4fr) minmax(260px, 1fr); gap: 72px; align-items: end; margin-top: 74px; }
.thesis h2 { max-width: 14ch; font-size: 5.5rem; font-weight: 600; line-height: 0.98; letter-spacing: 0; }
.thesis h2 em { color: var(--cobalt); font-family: var(--serif); font-weight: 400; }
.thesis-note { padding-bottom: 8px; }
.thesis-note p { margin-bottom: 28px; color: #35373a; font-size: 1rem; line-height: 1.65; }

.signal-strip { contain: inline-size; overflow-x: auto; padding: 14px var(--page-pad); background: var(--cobalt); color: var(--white); border-bottom: 1px solid var(--carbon); scrollbar-width: none; }
.signal-strip::-webkit-scrollbar { display: none; }
.signal-track { display: flex; width: 100%; min-width: 720px; align-items: center; justify-content: space-between; gap: 28px; list-style: none; font-size: 0.78rem; font-weight: 800; text-transform: uppercase; }
.signal-track li { display: flex; align-items: center; gap: 28px; white-space: nowrap; }
.signal-track li:not(:last-child)::after { content: ""; display: block; width: 8px; height: 8px; background: var(--ember); }

.section-intro { display: grid; grid-template-columns: 1fr 2.3fr 1fr; gap: 48px; align-items: end; margin-bottom: 80px; }
.section-intro h2 { max-width: 12ch; font-size: 4.9rem; font-weight: 800; line-height: 0.95; }
.section-intro > p { max-width: 35ch; color: #424447; line-height: 1.65; }
.thought-list { border-top: 1px solid var(--carbon); }
.thought-row > a, .thought-row > div {
  position: relative;
  display: grid;
  grid-template-columns: 64px 2.3fr 1fr 44px;
  gap: 28px;
  min-height: 220px;
  align-items: center;
  border-bottom: 1px solid var(--carbon);
  transition: background 200ms ease-out, color 200ms ease-out, padding 200ms ease-out;
}
.thought-row > a:hover { padding: 0 18px; background: var(--carbon); color: var(--paper); }
.thought-row h3 { max-width: 19ch; font-size: 2.2rem; line-height: 1.04; }
.thought-topic { margin-bottom: 16px; color: var(--steel); }
.thought-row > a:hover .thought-topic { color: var(--fog); }
.thought-summary { max-width: 31ch; color: var(--steel); font-size: 0.92rem; line-height: 1.6; }
.thought-row > a:hover .thought-summary { color: var(--fog); }
.thought-arrow { justify-self: end; color: var(--cobalt); font-size: 1.6rem; }
.thought-state { justify-self: end; padding: 9px 10px; border: 1px solid var(--line); color: var(--steel); }
.thought-upcoming > div { opacity: 0.72; }

.principles { background: var(--carbon); color: var(--paper); }
.principles-head { display: grid; grid-template-columns: 1fr 3fr; gap: 48px; align-items: end; }
.principles-head h2 { max-width: 10ch; font-family: var(--serif); font-size: 6.4rem; font-weight: 400; font-style: italic; line-height: 0.9; }
.principle-list { border-top: 1px solid var(--line-light); }
.principle-list article { display: grid; grid-template-columns: 110px 1.2fr 1fr; gap: 48px; align-items: start; padding: 54px var(--page-pad); border-bottom: 1px solid var(--line-light); }
.principle-list h3 { max-width: 17ch; font-size: 2.55rem; line-height: 1.02; }
.principle-list p { max-width: 42ch; color: var(--fog); font-size: 1rem; line-height: 1.65; }
.principle-list article:hover { background: var(--cobalt); }
.principle-list article:hover p { color: var(--white); }

.experience { border-bottom: 1px solid var(--line); }
.experience-intro { align-items: start; }
.experience-list { margin-left: 26%; border-top: 1px solid var(--carbon); }
.experience-list article {
  display: grid;
  grid-template-columns: 110px 1.3fr 1.2fr 1.5fr;
  gap: 28px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.experience-list h3 { font-size: 1.45rem; }
.experience-list article > p:not(.eyebrow) { font-weight: 600; }
.experience-list article > span { color: var(--steel); font-size: 0.9rem; line-height: 1.5; }

.about { display: grid; grid-template-columns: 1fr 1fr; min-height: 800px; background: var(--carbon); color: var(--paper); }
.about > * { min-width: 0; }
.about-image { min-height: 800px; overflow: hidden; }
.about-image img { height: 100%; object-fit: cover; object-position: center; }
.about-copy { display: flex; flex-direction: column; justify-content: center; }
.about-copy h2 { margin: 64px 0 40px; font-size: 5rem; line-height: 0.94; }
.about-lead { max-width: 27ch; font-family: var(--serif); font-size: 1.75rem; line-height: 1.3; }
.about-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 40px 0; }
.about-detail p { color: var(--fog); font-size: 0.94rem; line-height: 1.65; }

.contact { min-height: 760px; display: flex; flex-direction: column; justify-content: space-between; background: var(--paper); }
.contact-kicker { display: flex; align-items: center; gap: 12px; }
.contact h2 { max-width: 13ch; margin: 72px 0 100px; font-size: 6.5rem; line-height: 0.9; }
.contact-bottom { display: flex; align-items: end; justify-content: space-between; gap: 40px; padding-top: 32px; border-top: 1px solid var(--carbon); }
.contact-bottom > p { max-width: 50ch; color: #3a3c3f; line-height: 1.65; }
.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  transition: background 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out;
}
.button-primary { background: var(--cobalt); color: var(--white); }
.button-primary:hover { background: var(--cobalt-dark); }
.button-primary:disabled { background: var(--fog); color: var(--steel); cursor: not-allowed; }
.button-secondary { border-color: var(--carbon); background: transparent; }
.button-secondary:hover { background: var(--carbon); color: var(--paper); }
.button-quiet { min-height: 44px; padding-inline: 0; border-bottom-color: var(--carbon); border-radius: 0; }
.button-quiet:hover { color: var(--cobalt); }

.site-footer {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 28px;
  align-items: end;
  padding: 46px var(--page-pad);
  border-top: 1px solid var(--line-light);
  background: var(--carbon);
  color: var(--paper);
}
.footer-name { font-size: 2rem; font-weight: 900; }
.footer-links { display: flex; align-items: flex-start; flex-direction: column; gap: 12px; }

/* Article */
.reading-progress { position: fixed; z-index: 120; top: 0; left: 0; width: 0; height: 4px; background: var(--cobalt); }
.article-hero { padding-top: 170px; padding-bottom: 86px; }
.article-back { display: inline-block; margin-bottom: 64px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 24px; margin-bottom: 44px; color: var(--steel); }
.article-hero h1 { max-width: 12ch; font-size: 6.25rem; font-weight: 800; line-height: 0.92; }
.article-hero h1 em { color: var(--cobalt); font-family: var(--serif); font-weight: 400; }
.article-deck { max-width: 50ch; margin: 50px 0 0 34%; font-family: var(--serif); font-size: 1.65rem; line-height: 1.35; }
.article-image { position: relative; height: 72vh; min-height: 620px; max-height: 880px; overflow: hidden; background: #a7a6a2; }
.article-image img { height: 100%; object-fit: cover; object-position: center 29%; }
.article-image figcaption { position: absolute; right: var(--page-pad); bottom: 22px; max-width: 300px; padding: 12px 14px; background: var(--carbon); color: var(--paper); }
.article-layout { display: grid; grid-template-columns: minmax(190px, 1fr) minmax(0, 3fr) 1fr; gap: 58px; }
.article-aside { position: sticky; top: 120px; align-self: start; padding-top: 10px; border-top: 1px solid var(--carbon); }
.article-aside > p { margin: 16px 0 22px; }
.article-aside ol { padding-left: 16px; color: var(--steel); line-height: 1.8; }
.article-body { grid-column: 2; max-width: 720px; }
.article-body > p { margin-bottom: 1.55em; font-family: var(--serif); font-size: 1.3rem; line-height: 1.68; }
.article-body .article-lede { font-size: 1.75rem; line-height: 1.45; }
.article-body h2 { margin: 2.2em 0 0.7em; font-size: 2.7rem; line-height: 1.05; }
.article-body blockquote { margin: 72px -18% 72px 8%; padding: 44px 0 44px 40px; border-left: 8px solid var(--cobalt); }
.article-body blockquote p { max-width: 18ch; font-size: 3.25rem; line-height: 1.02; }
.article-callout { margin: 64px 0; padding: 34px; border: 1px solid var(--carbon); }
.article-callout > p { margin-bottom: 28px; }
.article-callout dl > div { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 16px 0; border-top: 1px solid var(--line); }
.article-callout dt { font-weight: 800; }
.article-callout dd { color: var(--steel); line-height: 1.55; }
.article-signoff { margin-top: 76px; padding-top: 26px; border-top: 1px solid var(--carbon); }
.article-signoff p:first-child { margin-bottom: 8px; font-family: var(--serif); font-size: 1.2rem; }
.article-next { background: var(--cobalt); color: var(--white); }
.article-next h2 { max-width: 13ch; margin: 42px 0 68px; font-family: var(--serif); font-size: 4.5rem; font-weight: 400; line-height: 1; }
.article-next .button-primary { background: var(--white); color: var(--carbon); }
.article-next .button-primary:hover { background: var(--carbon); color: var(--white); }
.article-next :focus-visible, .system-quote :focus-visible { outline-color: var(--white); box-shadow: 0 0 0 6px var(--carbon); }

/* Design system */
.system-page { background: var(--paper); }
.system-hero { padding-top: 180px; display: grid; grid-template-columns: 2fr 1fr; gap: 70px; align-items: end; border-bottom: 1px solid var(--carbon); }
.system-hero > .eyebrow { grid-column: 1 / -1; }
.system-hero h1 { max-width: 11ch; font-size: 6.5rem; line-height: 0.9; }
.system-hero h1 em { color: var(--cobalt); font-family: var(--serif); font-weight: 400; }
.system-hero > div > p { max-width: 42ch; font-family: var(--serif); font-size: 1.45rem; line-height: 1.4; }
.system-summary { margin-top: 42px; border-top: 1px solid var(--carbon); }
.system-summary > div { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.system-summary dd { color: var(--steel); }
.system-jump { position: sticky; z-index: 20; top: var(--header-height); display: flex; gap: 28px; overflow-x: auto; padding: 18px var(--page-pad); border-bottom: 1px solid var(--carbon); background: var(--paper); white-space: nowrap; }
.system-jump a:hover { color: var(--cobalt); }
.system-section { border-bottom: 1px solid var(--carbon); }
.system-section-head { display: grid; grid-template-columns: 1fr 2.2fr 1fr; gap: 48px; align-items: end; margin-bottom: 78px; }
.system-section-head h2 { max-width: 13ch; font-size: 4.5rem; line-height: 0.95; }
.system-section-head > p:last-child { max-width: 37ch; line-height: 1.65; }
.system-section-dark { background: var(--carbon); color: var(--paper); }
.system-section-dark .system-section-head > p:last-child { color: var(--fog); }
.swatch-grid { display: grid; grid-template-columns: repeat(6, 1fr); border: 1px solid var(--carbon); }
.swatch { min-height: 260px; display: flex; flex-direction: column; justify-content: flex-end; gap: 7px; padding: 18px; border-right: 1px solid var(--carbon); }
.swatch:last-child { border-right: 0; }
.swatch span { font-size: 1.25rem; font-weight: 800; }
.swatch code, .swatch small { font-size: 0.7rem; }
.swatch small { min-height: 2.5em; }
.swatch-carbon { background: var(--carbon); color: var(--white); }
.swatch-paper { background: var(--paper); }
.swatch-blue { background: var(--cobalt); color: var(--white); }
.swatch-fog { background: var(--fog); }
.swatch-steel { background: var(--steel); color: var(--white); }
.swatch-ember { background: var(--ember); color: var(--carbon); }
.usage-rule { margin-top: 54px; }
.usage-rule h3, .spacing-scale h3, .a11y-checklist h3 { margin-bottom: 26px; font-size: 1.7rem; }
.proportion-bar { display: flex; height: 88px; margin-bottom: 20px; border: 1px solid var(--carbon); }
.proportion-bar span { display: grid; place-items: center; min-width: 28px; font-size: 0.66rem; font-weight: 800; }
.p-paper { flex: 55; background: var(--paper); }
.p-carbon { flex: 27; background: var(--carbon); color: var(--white); }
.p-fog { flex: 10; background: var(--fog); }
.p-blue { flex: 6; background: var(--cobalt); color: var(--white); }
.p-ember { flex: 2; background: var(--ember); }
.usage-rule > p { max-width: 65ch; color: var(--steel); line-height: 1.6; }
.type-family { padding: 52px 0; border-top: 1px solid var(--line-light); }
.type-family-meta { display: grid; grid-template-columns: 1fr 1fr 1fr; margin-bottom: 42px; color: var(--fog); }
.type-public { max-width: 15ch; font-size: 5.5rem; font-weight: 800; line-height: 0.92; }
.type-newsreader { max-width: 18ch; font-family: var(--serif); font-size: 5rem; font-style: italic; line-height: 0.95; }
.type-weights { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
.type-weights span { font-size: 1.1rem; }
.w400 { font-weight: 400; }.w600 { font-weight: 600; }.w800 { font-weight: 800; }.w900 { font-weight: 900; }
.table-wrap { overflow-x: auto; margin-top: 60px; }
.type-scale { width: 100%; border-collapse: collapse; border-top: 1px solid var(--line-light); text-align: left; }
.type-scale th, .type-scale td { padding: 20px 12px 20px 0; border-bottom: 1px solid var(--line-light); }
.type-scale thead th { color: var(--fog); font-size: 0.7rem; text-transform: uppercase; }
.type-scale th:first-child, .type-scale td:first-child { width: 25%; }
.type-scale th:nth-child(2), .type-scale td:nth-child(2) { width: 25%; }
.type-scale td:last-child { color: var(--fog); }
.grid-demo { display: grid; grid-template-columns: repeat(12, 1fr); gap: 12px; height: 280px; padding: 18px; border: 1px solid var(--carbon); }
.grid-demo span { background: rgba(6, 71, 255, 0.16); border: 1px solid rgba(6, 71, 255, 0.34); }
.layout-specs { display: grid; grid-template-columns: repeat(3, 1fr); border-inline: 1px solid var(--carbon); border-bottom: 1px solid var(--carbon); }
.layout-specs article { min-height: 210px; padding: 28px; border-right: 1px solid var(--carbon); }
.layout-specs article:last-child { border-right: 0; }
.layout-specs h3 { margin: 32px 0 12px; font-size: 2.1rem; }
.layout-specs p { color: var(--steel); line-height: 1.55; }
.spacing-scale { margin-top: 70px; }
.spacing-scale > div { display: grid; grid-template-columns: repeat(9, 1fr); gap: 12px; align-items: end; }
.spacing-scale span { display: flex; min-width: 0; flex-direction: column; gap: 10px; }
.spacing-scale i { display: block; width: 100%; height: var(--space); min-height: 4px; background: var(--cobalt); }
.spacing-scale code { font-size: 0.65rem; }
.component-group { display: grid; grid-template-columns: 180px 1fr; border-top: 1px solid var(--carbon); }
.component-label { padding-top: 28px; }
.component-stage { min-width: 0; padding: 44px; border-left: 1px solid var(--carbon); }
.component-stage-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.component-stage-flush { padding-block: 0; }
.tag, .status { display: inline-flex; min-height: 36px; align-items: center; gap: 10px; padding: 0 11px; border: 1px solid var(--carbon); border-radius: 999px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; }
.tag-blue { border-color: var(--cobalt); background: var(--cobalt); color: var(--white); }
.tag-dark { background: var(--carbon); color: var(--paper); }
.form-demo { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.field { display: flex; flex-direction: column; gap: 10px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.field-wide { grid-column: 1 / -1; }
.field input, .field textarea { width: 100%; border: 0; border-bottom: 1px solid var(--carbon); border-radius: 0; background: transparent; padding: 14px 0; font-size: 1rem; text-transform: none; resize: vertical; }
.field input:focus, .field textarea:focus { border-bottom-color: var(--cobalt); outline: 0; box-shadow: 0 2px 0 var(--cobalt); }
.check { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; font-size: 0.82rem; }
.check input { width: 20px; height: 20px; accent-color: var(--cobalt); }
.form-demo > .button { justify-self: start; }
.system-quote { padding: 64px; background: var(--cobalt); color: var(--white); }
.system-quote p { max-width: 16ch; margin-bottom: 34px; font-family: var(--serif); font-size: 4rem; font-style: italic; line-height: 1; }
.system-quote cite { font-style: normal; }
.system-imagery { background: var(--carbon); color: var(--paper); }
.system-imagery .system-section-head > p:last-child { color: var(--fog); }
.imagery-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 24px; }
.imagery-grid figure { position: relative; min-height: 600px; overflow: hidden; }
.imagery-grid img { height: 100%; object-fit: cover; }
.imagery-grid figcaption { position: absolute; bottom: 14px; left: 14px; padding: 10px 12px; background: var(--paper); color: var(--carbon); }
.image-rules { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--line-light); }
.image-rules p { max-width: 55ch; color: var(--fog); line-height: 1.6; }
.image-rules strong { color: var(--white); }
.behavior-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--carbon); }
.behavior-grid article { min-height: 250px; padding: 30px; border-right: 1px solid var(--carbon); }
.behavior-grid article:last-child { border-right: 0; }
.behavior-grid h3 { margin: 62px 0 14px; font-size: 2.25rem; }
.behavior-grid p { color: var(--steel); line-height: 1.6; }
.a11y-checklist { margin-top: 70px; padding: 48px; background: var(--fog); }
.a11y-checklist ul { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 50px; padding-left: 20px; }
.a11y-checklist li { line-height: 1.5; }

/* 404 */
.not-found { min-height: 100svh; display: grid; place-items: center; padding: 24px; background: var(--carbon); color: var(--paper); }
.not-found main { width: min(900px, 100%); }
.not-found h1 { max-width: 9ch; margin: 44px 0 28px; font-size: 7rem; line-height: 0.9; }
.not-found h1 em { color: #5f83ff; font-family: var(--serif); font-weight: 400; }
.not-found main > p:not(.eyebrow) { margin-bottom: 38px; font-family: var(--serif); font-size: 1.4rem; }

@media (max-width: 1180px) {
  .hero-title { font-size: 7.3rem; }
  .about-copy h2 { font-size: 4rem; }
  .thesis h2 { font-size: 4.6rem; }
  .section-intro h2, .system-section-head h2 { font-size: 4.1rem; }
  .principles-head h2 { font-size: 5.2rem; }
  .contact h2 { font-size: 5.5rem; }
  .swatch-grid { grid-template-columns: repeat(3, 1fr); }
  .swatch { min-height: 220px; border-bottom: 1px solid var(--carbon); }
  .swatch:nth-child(3) { border-right: 0; }
  .swatch:nth-child(n+4) { border-bottom: 0; }
  .experience-list { margin-left: 16%; }
}

@media (max-width: 900px) {
  :root { --header-height: 70px; }
  .section-pad { padding-block: 92px; }
  .desktop-nav, .header-action { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .site-header.is-scrolled, .site-header-solid { background: var(--paper); backdrop-filter: none; }
  .menu-button {
    display: flex;
    position: relative;
    z-index: 102;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 7px;
    border: 0;
    background: var(--carbon);
  }
  .menu-button span { width: 20px; height: 1px; background: var(--paper); transition: transform 180ms ease-out; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .mobile-nav {
    display: flex;
    position: fixed;
    z-index: 101;
    inset: 0;
    width: 100%;
    min-height: 100vh;
    min-height: 100svh;
    height: 100dvh;
    padding: 110px 22px 30px;
    flex-direction: column;
    justify-content: center;
    background: var(--cobalt);
    color: var(--white);
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-105%);
    transition: transform 500ms var(--ease-out), visibility 0s 500ms;
  }
  .mobile-nav.is-open {
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition: transform 500ms var(--ease-out), visibility 0s;
  }
  .mobile-nav a { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.45); font-size: 3rem; font-weight: 800; line-height: 1; }
  .hero { min-height: 780px; height: 94vh; height: 94svh; }
  .hero::before { background: rgba(243, 242, 237, 0.54); }
  .hero-image img { object-position: 60% center; }
  .hero-meta { display: none; }
  .hero-index { top: 22%; }
  .hero-title { top: 39%; font-size: 6rem; }
  .hero-intro { width: 350px; }
  .hero-status { max-width: 220px; }
  .thesis-content { grid-template-columns: 1fr; }
  .thesis h2 { font-size: 4rem; }
  .thesis-note { max-width: 430px; margin-left: auto; }
  .section-intro { grid-template-columns: 1fr 2fr; }
  .section-intro > p { grid-column: 2; }
  .thought-row > a, .thought-row > div { grid-template-columns: 44px 1fr 44px; min-height: 230px; }
  .thought-summary { grid-column: 2; }
  .thought-arrow, .thought-state { grid-column: 3; grid-row: 1; }
  .principles-head { grid-template-columns: 1fr 2fr; }
  .principles-head h2 { font-size: 4.5rem; }
  .principle-list article { grid-template-columns: 90px 1fr; }
  .principle-list p { grid-column: 2; }
  .experience-list { margin-left: 0; }
  .experience-list article { grid-template-columns: 100px 1fr 1.2fr; }
  .experience-list article > span { grid-column: 2 / -1; }
  .about { grid-template-columns: 1fr; }
  .about-image { min-height: 620px; }
  .about-copy h2 { font-size: 4.4rem; }
  .contact h2 { font-size: 4.75rem; }
  .site-footer { grid-template-columns: 1fr 1fr; }
  .site-footer > p:last-child { text-align: right; }
  .system-hero { grid-template-columns: 1fr; }
  .system-hero h1 { font-size: 5.25rem; }
  .system-hero > div { max-width: 520px; margin-left: auto; }
  .system-section-head { grid-template-columns: 1fr 2fr; }
  .system-section-head > p:last-child { grid-column: 2; }
  .type-public { font-size: 4.4rem; }
  .type-newsreader { font-size: 4rem; }
  .layout-specs { grid-template-columns: 1fr; }
  .layout-specs article { border-right: 0; border-bottom: 1px solid var(--carbon); }
  .layout-specs article:last-child { border-bottom: 0; }
  .spacing-scale > div { grid-template-columns: repeat(5, 1fr); }
  .component-group { grid-template-columns: 130px 1fr; }
  .imagery-grid figure { min-height: 480px; }
  .article-hero h1 { font-size: 5rem; }
  .article-deck { margin-left: 20%; }
  .article-layout { grid-template-columns: 150px 1fr; }
  .article-body { grid-column: 2; }
  .article-body blockquote { margin-inline: 0; }
}

@media (max-width: 640px) {
  :root { --page-pad: 18px; }
  .section-pad { padding-block: 76px; }
  .mobile-nav a { font-size: 2.4rem; }
  .hero { min-height: 750px; height: 92vh; height: 92svh; max-height: 830px; }
  .hero::before { background: rgba(243, 242, 237, 0.66); }
  .hero-image img { object-position: 63% center; }
  .hero-index { top: 17%; max-width: 180px; }
  .hero-title { top: 39%; font-size: 4.6rem; }
  .hero-intro { bottom: 28px; width: 255px; }
  .hero-intro p { font-size: 1.25rem; }
  .hero-status { display: none; }
  .thesis-content { gap: 48px; margin-top: 48px; }
  .thesis h2 { font-size: 2.7rem; }
  .section-intro { display: block; margin-bottom: 52px; }
  .section-intro h2 { margin: 34px 0 24px; font-size: 3rem; }
  .thought-row > a, .thought-row > div { grid-template-columns: 30px 1fr; gap: 14px; min-height: 0; padding: 30px 0; }
  .thought-row > a:hover { padding: 30px 12px; }
  .thought-summary { grid-column: 2; }
  .thought-arrow, .thought-state { grid-column: 2; grid-row: auto; justify-self: start; }
  .thought-row h3 { font-size: 1.7rem; }
  .principles-head { display: block; }
  .principles-head h2 { margin-top: 38px; font-size: 3.5rem; }
  .principle-list article { grid-template-columns: 1fr; gap: 24px; padding-block: 38px; }
  .principle-list h3 { font-size: 2.1rem; }
  .principle-list p { grid-column: 1; }
  .experience-list article { grid-template-columns: 1fr; gap: 8px; }
  .experience-list article > span { grid-column: 1; margin-top: 6px; }
  .about-image { min-height: 480px; }
  .about-copy h2 { margin: 42px 0 28px; font-size: 3rem; }
  .about-lead { font-size: 1.4rem; }
  .about-detail { grid-template-columns: 1fr; }
  .contact { min-height: 660px; }
  .contact h2 { margin-block: 58px; font-size: 3.25rem; }
  .contact-bottom { align-items: stretch; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }
  .site-footer > p:last-child { text-align: left; }
  .system-hero { padding-top: 138px; }
  .system-hero h1 { font-size: 3.55rem; }
  .system-section-head { display: block; margin-bottom: 52px; }
  .system-section-head h2 { margin: 32px 0 24px; font-size: 3rem; }
  .swatch-grid { grid-template-columns: 1fr 1fr; }
  .swatch { min-height: 180px; border-right: 1px solid var(--carbon); border-bottom: 1px solid var(--carbon) !important; }
  .swatch:nth-child(even) { border-right: 0; }
  .swatch:nth-child(n+5) { border-bottom: 0 !important; }
  .proportion-bar { height: 62px; }
  .type-family-meta { grid-template-columns: 1fr; gap: 7px; }
  .type-public { font-size: 3rem; }
  .type-newsreader { font-size: 3rem; }
  .type-weights { grid-template-columns: 1fr 1fr; }
  .grid-demo { grid-template-columns: repeat(4, 1fr); height: 220px; }
  .grid-demo span:nth-child(n+5) { display: none; }
  .spacing-scale > div { grid-template-columns: repeat(3, 1fr); }
  .component-group { grid-template-columns: 1fr; }
  .component-label { padding: 24px 0; }
  .component-stage { padding: 32px 0; border-left: 0; border-top: 1px solid var(--carbon); }
  .component-stage-flush { padding: 0; }
  .form-demo { grid-template-columns: 1fr; }
  .field-wide { grid-column: 1; }
  .check { grid-column: 1; }
  .system-quote { padding: 40px 24px; }
  .system-quote p { font-size: 2.8rem; }
  .imagery-grid { grid-template-columns: 1fr; }
  .imagery-grid figure { min-height: 420px; }
  .image-rules { grid-template-columns: 1fr; }
  .behavior-grid { grid-template-columns: 1fr; }
  .behavior-grid article { min-height: 210px; border-right: 0; border-bottom: 1px solid var(--carbon); }
  .behavior-grid article:last-child { border-bottom: 0; }
  .behavior-grid h3 { margin-top: 46px; }
  .a11y-checklist { padding: 32px 24px; }
  .a11y-checklist ul { grid-template-columns: 1fr; }
  .article-hero { padding-top: 130px; }
  .article-back { margin-bottom: 46px; }
  .article-hero h1 { font-size: 3.45rem; }
  .article-deck { margin: 38px 0 0; font-size: 1.4rem; }
  .article-image { min-height: 440px; height: 66vh; }
  .article-image figcaption { left: 18px; right: 18px; }
  .article-layout { grid-template-columns: 1fr; gap: 52px; }
  .article-aside { position: static; }
  .article-body { grid-column: 1; }
  .article-body > p { font-size: 1.16rem; }
  .article-body .article-lede { font-size: 1.4rem; }
  .article-body h2 { font-size: 2.25rem; }
  .article-body blockquote { padding-left: 22px; }
  .article-body blockquote p { font-size: 2.45rem; }
  .article-callout { padding: 24px 18px; }
  .article-callout dl > div { grid-template-columns: 1fr; }
  .article-next h2 { font-size: 3rem; }
  .not-found h1 { font-size: 4.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  [data-reveal], .hero-title [data-hero-line] { opacity: 1; transform: none; }
}