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

@font-face {
  font-family: 'Libre Baskerville';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('./fonts/libre-baskerville-italic-latin.woff2') format('woff2');
}

:root {
  color-scheme: light;
  --ink: #152d32;
  --petrol: #244e57;
  --ivory: #fff7ed;
  --gold: #f5d76e;
  --white: #fff;
  --rule: #d8c6b4;
  --gutter: clamp(24px, 4.8vw, 80px);
  --font-body: Inter, Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font: 18px/1.5 var(--font-body); -webkit-font-smoothing: antialiased; }
::selection { background: var(--gold); color: var(--ink); }
a { color: inherit; text-underline-offset: .2em; }
a, button { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
[hidden] { display: none !important; }
img { display: block; max-width: 100%; }
p, h1, h2, h3, figure, dl, dd { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
h2 { font-size: clamp(38px, 4.15vw, 64px); font-weight: 750; letter-spacing: -.055em; line-height: 1.05; }
h3 { font-size: clamp(22px, 2vw, 30px); letter-spacing: -.04em; line-height: 1.2; }
em { font-family: 'Libre Baskerville', Georgia, 'Times New Roman', serif; font-style: italic; font-weight: 400; }
section[id] { scroll-margin-top: 24px; }
:focus-visible { outline: 3px solid currentColor; outline-offset: 6px; }
.container { width: calc(100% - var(--gutter) * 2); max-width: 1440px; margin-inline: auto; }
.lead { font-size: clamp(20px, 1.7vw, 26px); line-height: 1.42; letter-spacing: -.018em; }
.icon { width: 22px; height: 22px; flex-shrink: 0; stroke-linecap: round; stroke-linejoin: round; }
.icon-long { width: 32px; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 2; padding: 12px 20px; background: var(--white); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { background: var(--petrol); color: var(--ivory); border-bottom: 1px solid #ffffff26; }
.header-inner { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.wordmark { font-size: 36px; font-weight: 750; letter-spacing: -.055em; line-height: 1.15; text-decoration: none; white-space: nowrap; }
nav { display: flex; align-items: center; gap: clamp(20px, 2.6vw, 40px); }
nav a { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; font-size: 18px; text-decoration: none; }
nav a:hover { text-decoration: underline; }
.button { min-height: 60px; display: inline-flex; justify-content: center; align-items: center; gap: 18px; padding: 14px 28px; border: 1px solid transparent; border-radius: 5px; font-size: 21px; line-height: 1.3; font-weight: 500; text-decoration: none; transition: background-color 160ms, color 160ms; }
.button-petrol { background: var(--petrol); color: var(--white); }
.button-petrol:hover { background: var(--ink); }
.button-outline { border-color: var(--ink); color: var(--ink); background: transparent; }
.button-outline:hover { background: var(--ink); color: var(--white); }
.header-github { min-height: 54px; font-size: 18px; padding: 13px 25px; gap: 8px; border-color: #fff7ed; background: transparent; color: var(--ivory); }
.header-github:hover { background: var(--ivory); color: var(--petrol); }
.hero { background: var(--petrol); color: var(--ivory); padding: 72px 0 56px; }
h1 { max-width: 1200px; font-size: clamp(76px, 8.75vw, 136px); font-weight: 750; letter-spacing: -.06em; line-height: 1; }
h1 > span { display: block; }
h1 strong { color: var(--gold); font-weight: inherit; }
.hero-principles { margin-top: 24px; font-size: clamp(28px, 2.85vw, 44px); font-weight: 650; letter-spacing: -.035em; line-height: 1.25; }
.hero-intro { max-width: 1150px; margin-top: 26px; font-size: clamp(22px, 2.1vw, 32px); line-height: 1.45; letter-spacing: -.02em; text-wrap: pretty; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 40px; margin-top: 36px; }
.hero-actions .button { min-height: 78px; font-size: 27px; padding: 18px 36px; }
.button-gold { background: var(--gold); color: var(--ink); }
.button-gold:hover { background: var(--ivory); }
.hero-source-link { display: inline-flex; align-items: center; gap: 12px; min-height: 48px; font-size: 25px; }
.hero-source-link:hover { color: var(--gold); }
.hero-status { margin-top: 30px; font-size: 20px; }
.hero-cost-note { margin-top: 6px; font-size: 17px; }
.possibilities { background: var(--ivory); padding: 78px 0 46px; }
.possibilities h2 { font-size: clamp(40px, 5.2vw, 80px); }
.section-intro { display: grid; grid-template-columns: 1.55fr 1fr; gap: 48px; align-items: start; }
.example-list { list-style: none; padding: 0; margin: 36px 0 28px; }
.example-list li { display: grid; grid-template-columns: .13fr .33fr .54fr; gap: 40px; padding: 22px 0; border-bottom: 1px solid var(--rule); align-items: start; }
.example-list li:last-child { border-bottom: 0; }
.example-number { font-size: 20px; color: var(--petrol); }
.example-list p { font-size: 24px; line-height: 1.4; letter-spacing: -.02em; }
.section-note { font-size: 16px; }
.control { padding: 50px 0 60px; background: var(--petrol); color: var(--white); }
.control h2 { font-size: clamp(38px, 3.7vw, 58px); }
.control-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 64px; margin-top: 30px; }
.control h3 { color: var(--gold); margin-bottom: 12px; }
.control p { font-size: 22px; line-height: 1.45; letter-spacing: -.02em; }
.project { padding: 78px 0 60px; }
.project-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.project h2 { font-size: clamp(40px, 5.2vw, 80px); }
.project .lead { max-width: 36ch; margin: 24px 0 22px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; font-weight: 600; font-size: 22px; color: var(--petrol); }
.text-link:hover { text-decoration-thickness: 2px; }
.project-steps { border-left: 1px solid #dce2e2; padding-left: 54px; }
.project-steps > div { padding: 24px 0 30px; border-bottom: 1px solid #dce2e2; }
.project-steps > div:first-child { padding-top: 12px; }
.project-steps > div:last-child { border: 0; padding-bottom: 0; }
.project-steps dt { font-size: 18px; margin-bottom: 7px; }
.project-steps dd { font-size: 23px; font-weight: 600; letter-spacing: -.035em; line-height: 1.35; }
.contribute { background: var(--gold); padding-top: 60px; }
.contribution-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; padding-bottom: 28px; }
.contribute h2 { font-size: clamp(42px, 5.3vw, 82px); }
.contribute em { color: var(--petrol); font-size: 1.12em; letter-spacing: -.06em; }
.contribution-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; }
.discussion-note { font-size: 18px; margin-top: 18px; }
.source-code { background: var(--petrol); color: var(--white); padding: 22px 0 0; }
.clone-command { display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid #d8e4e5; border-radius: 5px; padding: 10px 16px 10px 24px; }
.clone-command code { font-family: ui-monospace, 'Cascadia Code', 'Segoe UI Mono', monospace; font-size: 19px; letter-spacing: .02em; overflow-wrap: anywhere; user-select: all; }
.copy-button { min-height: 46px; min-width: 130px; border: 1px solid #d8e4e5; border-radius: 5px; padding: 9px 20px; background: transparent; color: var(--white); font-size: 18px; line-height: 1.4; cursor: pointer; }
.copy-button:hover, .copy-button[data-copied] { background: var(--white); color: var(--petrol); }
.copy-button:disabled { cursor: wait; }
.copy-status { min-height: 25px; margin-top: 5px; font-size: 14px; }
.site-footer { background: var(--petrol); color: var(--white); padding: 28px 0 36px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.site-footer .wordmark { font-size: 25px; }
.site-footer p { margin-top: 6px; font-size: 15px; }
.site-footer p:last-child { max-width: 62ch; }
.site-footer .footer-inner > div { flex: 1; }
.site-footer nav a { font-size: 16px; }

/* Installation guide shares the public site's typography and open layouts. */
.header-inner nav { flex-wrap: wrap; }
nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; }
.installation-hero h1 { max-width: 1050px; font-size: clamp(48px, 7vw, 104px); }
.installation-hero .hero-intro { max-width: 48ch; }
.installation-hero .hero-actions .button { min-height: 64px; font-size: clamp(18px, 1.8vw, 25px); padding: 18px 26px; text-align: left; }
.installation-section { padding: 64px 0; }
.installation-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.installation-columns h2 { font-size: clamp(34px, 4.1vw, 62px); }
.installation-columns .lead { margin-top: 24px; }
.installation-columns p + p, .installation-columns p + a { margin-top: 20px; }
.installation-status { border-left: 4px solid var(--petrol); padding-left: 28px; }
.installation-status h3 { margin-bottom: 16px; }
.installation-status a { display: inline-block; padding-block: 8px; }
.installation-guide h2 { max-width: 20ch; }
.installation-help { background: var(--ivory); }
.installation-details h3:not(:first-child) { margin-top: 28px; }
.installation-details p { margin-top: 12px; }

@media (max-width: 1100px) {
  .header-inner nav { gap: 8px 16px; }
}

@media (max-width: 800px) {
  .header-inner nav { justify-content: flex-start; column-gap: 20px; }
  .installation-section { padding-block: 44px; }
  .installation-columns { grid-template-columns: 1fr; gap: 32px; }
  .installation-status { padding-left: 20px; }
}

@media (min-width: 1700px) {
  .section-intro { grid-template-columns: 1.55fr 1fr; gap: 70px; }
}

@media (min-width: 801px) and (max-height: 800px) {
  .header-inner { min-height: 80px; }
  .hero { padding-block: 40px; }
  h1 { font-size: clamp(68px, 7vw, 96px); }
  .hero-principles { margin-top: 18px; font-size: 32px; }
  .hero-intro { max-width: 52ch; margin-top: 20px; font-size: 24px; }
  .hero-actions { margin-top: 26px; }
  .hero-actions .button { min-height: 60px; font-size: 21px; padding: 14px 26px; }
  .hero-source-link { font-size: 21px; }
  .hero-status { margin-top: 24px; font-size: 17px; }
  .hero-cost-note { font-size: 14px; }
}

@media (max-width: 1100px) {
  .header-inner { gap: 20px; }
  .wordmark { font-size: 26px; }
  nav { gap: 22px; }
  nav a { font-size: 16px; }
  .hero { padding-top: 56px; }
  h1 { font-size: clamp(68px, 8.75vw, 96px); }
  .hero-principles { font-size: 32px; }
  .hero-intro { max-width: 48ch; font-size: 24px; }
  .hero-actions .button { min-height: 64px; font-size: 21px; padding: 16px 26px; }
  .hero-source-link { font-size: 21px; }
  .example-list li { grid-template-columns: .08fr .36fr .56fr; gap: 24px; }
  .example-list p, .control p { font-size: 20px; }
  .control-columns { gap: 32px; }
  .project-layout, .contribution-layout { gap: 44px; }
  .project-steps { padding-left: 32px; }
}

@media (max-width: 800px) {
  .header-inner { flex-wrap: wrap; padding-block: 18px 10px; row-gap: 8px; }
  .header-inner nav { order: 3; width: 100%; justify-content: space-between; gap: 8px; }
  .header-github { margin-left: auto; min-height: 44px; padding: 9px 18px; }
  .hero { padding-top: 40px; padding-bottom: 40px; }
  .section-intro, .project-layout, .contribution-layout { grid-template-columns: 1fr; gap: 28px; }
  h1 { font-size: clamp(46px, 8.75vw, 68px); letter-spacing: -.055em; }
  .hero-principles { margin-top: 24px; font-size: 27px; }
  .hero-intro { margin-top: 20px; font-size: 21px; max-width: 46ch; }
  .hero-actions { margin-top: 26px; gap: 14px 28px; }
  .hero-actions .button { min-height: 58px; font-size: 20px; padding: 14px 24px; }
  .hero-source-link { font-size: 18px; }
  .hero-status { margin-top: 24px; font-size: 16px; }
  .hero-cost-note { max-width: 52ch; font-size: 14px; }
  .possibilities { padding: 48px 0 38px; }
  .section-intro .lead { font-size: 20px; max-width: 42ch; }
  .example-list { margin: 30px 0 18px; }
  .example-list li { grid-template-columns: 30px 1fr; column-gap: 20px; row-gap: 12px; padding: 24px 0; }
  .example-number { font-size: 17px; }
  .example-list p { grid-column: 2; font-size: 19px; }
  .section-note { font-size: 14px; }
  .control { padding: 42px 0; }
  .control-columns { grid-template-columns: 1fr; gap: 26px; }
  .control h3 { margin-bottom: 8px; }
  .control p { font-size: 19px; max-width: 42ch; }
  .project { padding: 48px 0; }
  .project h2 { font-size: clamp(40px, 7.5vw, 60px); }
  .project .lead { font-size: 20px; }
  .project-steps { margin-top: 4px; padding-left: 24px; }
  .project-steps dd { font-size: 21px; }
  .project-steps dt { font-size: 16px; }
  .contribute { padding-top: 46px; }
  .contribute h2 { font-size: clamp(44px, 8vw, 64px); }
  .contribution-layout .lead { font-size: 20px; }
  .contribution-actions .button { min-height: 52px; font-size: 18px; padding: 12px 20px; }
  .discussion-note { font-size: 16px; }
  .clone-command { flex-wrap: wrap; padding: 18px; gap: 18px; }
  .clone-command code { font-size: 16px; }
  .copy-button { min-width: 110px; margin-left: auto; font-size: 16px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 18px; }
  .site-footer nav { flex-wrap: wrap; gap: 12px 24px; }
  .site-footer p { font-size: 14px; }
}

@media (max-width: 380px) {
  .header-inner { column-gap: 8px; }
  .wordmark { font-size: 22px; }
  .header-github { font-size: 16px; padding-inline: 12px; }
  .header-inner nav a { font-size: 14px; }
  h1 { font-size: 40px; }
  .hero-principles { font-size: 24px; }
  .hero-intro { font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}