:root {
  --paper: #f4f0e6;
  --paper-deep: #eae4d6;
  --ink: #19201d;
  --ink-soft: #515954;
  --rule: #c9c2b3;
  --acid: #d7ff52;
  --green: #155d46;
  --coral: #e7694f;
  --blue: #2364aa;
  --code: #17221e;
  --code-soft: #26352f;
  --white: #fffdf7;
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --page: min(1420px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }
::selection { color: var(--ink); background: var(--acid); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; transform: translateY(-150%); padding: 8px 14px; color: var(--paper); background: var(--ink); }
.skip-link:focus { transform: translateY(0); }
.reading-progress { position: fixed; z-index: 100; inset: 0 0 auto; height: 3px; background: transparent; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--coral); }

.site-header {
  position: sticky;
  z-index: 90;
  top: 0;
  display: flex;
  align-items: center;
  width: 100%;
  height: 70px;
  padding: 0 max(24px, calc((100vw - 1420px) / 2));
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-size: 16px; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.brand > span:last-child > span { color: var(--green); font-weight: 500; }
.brand-mark { display: grid; place-items: center; width: 31px; height: 31px; border: 1px solid var(--ink); border-radius: 50%; font-family: var(--serif); font-size: 22px; font-weight: 400; }
.header-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; font-family: var(--mono); font-size: 12px; }
.header-nav a { text-decoration: none; }
.header-nav a:not(.header-cta):hover { color: var(--green); }
.header-cta { padding: 9px 14px; color: var(--paper); background: var(--ink); }
.header-cta:hover { background: var(--green); }
.menu-button, .mobile-nav { display: none; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(480px, .98fr);
  gap: clamp(52px, 7vw, 120px);
  align-items: center;
  width: var(--page);
  min-height: calc(100vh - 70px);
  margin: 0 auto;
  padding: 86px 0 94px;
}
.eyebrow, .section-kicker { margin: 0 0 24px; color: var(--green); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.eyebrow span { display: inline-block; margin-right: 10px; padding: 4px 7px; color: var(--ink); background: var(--acid); }
.hero h1 { max-width: 780px; margin: 0; font-size: clamp(52px, 5.7vw, 88px); font-weight: 760; letter-spacing: -.067em; line-height: .96; }
.hero h1 em { color: var(--green); font-family: var(--serif); font-weight: 400; }
.hero-lede { max-width: 640px; margin: 35px 0 0; color: var(--ink-soft); font-family: var(--serif); font-size: clamp(21px, 1.8vw, 27px); line-height: 1.45; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; gap: 30px; padding: 13px 18px; font-family: var(--mono); font-size: 12px; font-weight: 700; text-decoration: none; }
.button-primary { color: var(--paper); background: var(--green); }
.button-primary:hover { color: var(--ink); background: var(--acid); }
.text-link { color: var(--ink); font-family: var(--mono); font-size: 12px; font-weight: 700; text-underline-offset: 5px; }
.hero-meta { display: flex; gap: 28px; margin: 55px 0 0; padding: 20px 0 0; border-top: 1px solid var(--rule); list-style: none; }
.hero-meta li { display: flex; gap: 8px; color: var(--ink-soft); font-family: var(--mono); font-size: 10px; text-transform: uppercase; }
.hero-meta span { color: var(--coral); }

.hero-console { position: relative; border: 1px solid #0b120f; background: var(--code); box-shadow: 17px 17px 0 var(--acid), 18px 18px 0 var(--ink); overflow: hidden; }
.hero-console::before { position: absolute; inset: 0; pointer-events: none; content: ""; background: linear-gradient(135deg, rgba(255,255,255,.035), transparent 35%); }
.window-bar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 10px 13px; border-bottom: 1px solid #405048; color: #b5c1bb; font-family: var(--mono); font-size: 10px; }
.window-bar .mode { justify-self: end; color: #7f9188; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 7px; height: 7px; border: 1px solid #718078; border-radius: 50%; }
.hero-code { margin: 0; padding: clamp(28px, 4vw, 54px) clamp(22px, 3vw, 42px); overflow-x: auto; color: #dbe7df; font: 13px/1.7 var(--mono); tab-size: 2; }
.syn-punc { color: #879b90; }
.syn-key { color: #d7ff52; }
.syn-fn { color: #81c7ff; }
.syn-str { color: #ffb8a9; }
.syn-prop { color: #f5d26f; }
.syn-template { color: #b7d8c8; }
.trace-panel { margin: 0 14px 14px; border: 1px solid #42554c; background: #203029; color: #c9d5cf; font-family: var(--mono); font-size: 10px; }
.trace-row { display: grid; grid-template-columns: auto 1fr auto; gap: 8px; align-items: center; padding: 10px 12px; border-bottom: 1px solid #42554c; text-transform: uppercase; }
.trace-row > span:last-child { color: #91d5a4; }
.trace-pulse, .status-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #70e394; box-shadow: 0 0 0 4px rgba(112,227,148,.12); }
.trace-grid { display: grid; grid-template-columns: 1fr 1fr; padding: 10px 12px; }
.trace-grid > * { padding: 3px 0; }
.trace-grid span { color: #83968d; }
.trace-grid b { text-align: right; }
.trace-grid .repair { color: #f0cc69; }
.trace-grid .result { color: #d7ff52; }
.trace-panel p { margin: 0; padding: 10px 12px; border-top: 1px solid #42554c; }
.trace-panel p > span { float: right; color: #83968d; }

.kernel-band { display: grid; grid-template-columns: 1fr 3fr; gap: 50px; align-items: center; padding: 38px max(24px, calc((100vw - 1420px) / 2)); color: var(--paper); background: var(--green); }
.kernel-label { font-family: var(--serif); font-size: 18px; }
.kernel-label span { display: block; margin-bottom: 4px; color: var(--acid); font: 10px var(--mono); letter-spacing: .12em; }
.kernel-flow { display: flex; align-items: center; justify-content: space-between; }
.kernel-flow > div { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; align-items: start; }
.kernel-flow small { grid-row: 1 / 3; color: #a8c7ba; font: 10px var(--mono); }
.kernel-flow strong { font-size: 14px; font-weight: 550; line-height: 1.35; }
.kernel-flow .flow-atom strong { color: var(--acid); }
.flow-arrow { color: #8ab09f; font: 20px var(--mono); }

.article-shell { display: grid; grid-template-columns: 220px minmax(0, 800px); gap: clamp(54px, 8vw, 120px); width: min(1120px, calc(100vw - 48px)); margin: 0 auto; padding: 120px 0 150px; }
.toc { position: sticky; top: 102px; align-self: start; font-family: var(--mono); }
.toc > p { margin: 0 0 15px; color: var(--ink-soft); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.toc ol { margin: 0; padding: 0; border-top: 1px solid var(--rule); list-style: none; }
.toc li { border-bottom: 1px solid var(--rule); }
.toc a { display: flex; gap: 11px; padding: 8px 2px; color: var(--ink-soft); font-size: 10px; text-decoration: none; transition: color .18s, padding .18s; }
.toc a span { color: #92988f; }
.toc a:hover, .toc a.active { padding-left: 7px; color: var(--green); }
.toc a.active span { color: var(--coral); }
.toc-note { display: flex; gap: 11px; align-items: flex-start; margin-top: 25px; padding: 13px; border: 1px solid var(--rule); background: rgba(255,255,255,.22); }
.toc-note .status-dot { flex: 0 0 auto; width: 6px; height: 6px; margin-top: 6px; }
.toc-note p { margin: 0; color: var(--ink-soft); font-size: 9px; line-height: 1.55; }
.toc-note strong { color: var(--ink); }

.chapter { padding: 0 0 118px; }
.chapter:last-child { padding-bottom: 0; }
.chapter-header { display: grid; grid-template-columns: 50px 1fr; gap: 24px; margin-bottom: 38px; }
.chapter-number { padding-top: 8px; border-top: 2px solid var(--coral); color: var(--coral); font: 11px var(--mono); }
.chapter-header .section-kicker { margin: 0 0 11px; }
.chapter h2 { margin: 0; font-size: clamp(39px, 5vw, 64px); letter-spacing: -.055em; line-height: 1.02; }
.chapter h3 { margin: 52px 0 14px; font-size: 25px; letter-spacing: -.03em; line-height: 1.2; }
.prose > .chapter > p { max-width: 690px; margin: 0 0 22px; color: #343c38; font-family: var(--serif); font-size: 19px; line-height: 1.72; }
.prose .lead { color: var(--ink); font-size: 23px; line-height: 1.62; }
.prose p code, .principles-list code, .steps code { padding: .1em .3em; border: 1px solid #d6cfc0; border-radius: 2px; background: #ebe6da; font: .78em var(--mono); }
.pullquote { margin: 46px 0; padding: 26px 0 27px 28px; border-left: 5px solid var(--acid); background: linear-gradient(90deg, rgba(215,255,82,.17), transparent 75%); }
.pullquote p { margin: 0; font-family: var(--serif); font-size: clamp(27px, 3.1vw, 39px); letter-spacing: -.025em; line-height: 1.25; }
.pullquote em { color: var(--green); }
.concept-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 45px; border: 1px solid var(--rule); }
.concept-grid > div { min-height: 155px; padding: 17px; border-right: 1px solid var(--rule); }
.concept-grid > div:last-child { border-right: 0; }
.concept-grid span { color: var(--green); font-family: var(--serif); font-size: 27px; }
.concept-grid h3 { margin: 25px 0 4px; font-size: 14px; }
.concept-grid p { margin: 0; color: var(--ink-soft); font-family: var(--mono); font-size: 9px; line-height: 1.45; }

.code-block { margin: 40px 0; color: #dae5df; border: 1px solid var(--ink); background: var(--code); box-shadow: 7px 7px 0 var(--paper-deep); }
.code-block figcaption { display: flex; justify-content: space-between; align-items: center; height: 41px; padding: 0 10px 0 14px; border-bottom: 1px solid #3b4a43; color: #9bad9f; font: 10px var(--mono); }
.code-block figcaption span { display: flex; gap: 9px; align-items: center; }
.code-block figcaption i { display: block; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); }
.copy-button { padding: 5px 9px; border: 1px solid #4d5d55; color: #b9c8c0; background: transparent; font: 9px var(--mono); cursor: pointer; }
.copy-button:hover, .copy-button.copied { color: var(--ink); border-color: var(--acid); background: var(--acid); }
.code-block pre { margin: 0; padding: 26px 25px; overflow-x: auto; font: 12.5px/1.7 var(--mono); tab-size: 2; }
.code-block-compact pre { padding-block: 21px; }

.outcome-table { margin: 38px 0; border: 1px solid var(--rule); font-family: var(--mono); font-size: 10px; }
.outcome-table > div { display: grid; grid-template-columns: 1.3fr 1fr 1.3fr; align-items: center; min-height: 48px; padding: 0 15px; border-bottom: 1px solid var(--rule); }
.outcome-table > div:last-child { border: 0; }
.outcome-table .outcome-head { min-height: 34px; color: var(--ink-soft); background: var(--paper-deep); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.tag { display: inline-block; justify-self: start; padding: 2px 6px; border-radius: 100px; font: 8px var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.tag-pass { color: #16603e; background: #d8eedf; }
.tag-repair { color: #68530f; background: #f5e6a5; }
.tag-fail { color: #8a2f21; background: #f4d5ce; }
.axiom { display: grid; grid-template-columns: 115px 1fr; gap: 26px; margin: 46px 0; padding: 26px; color: var(--paper); background: var(--green); }
.axiom > span { padding-top: 5px; color: var(--acid); font: 10px var(--mono); letter-spacing: .12em; }
.axiom p { margin: 0; font-family: var(--serif); font-size: 24px; line-height: 1.4; }

.pipeline { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; margin: 40px 0; padding: 24px 20px; border-block: 1px solid var(--rule); }
.pipeline div { display: flex; flex-direction: column; min-width: 0; }
.pipeline span { color: var(--coral); font: 8px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.pipeline strong { margin: 5px 0 1px; overflow: hidden; font: 11px var(--mono); text-overflow: ellipsis; white-space: nowrap; }
.pipeline small { color: var(--ink-soft); font: 8px var(--mono); }
.pipeline > b { padding: 0 10px; color: #9aa099; font: 13px var(--mono); }
.ensure-list { display: grid; grid-template-columns: repeat(2, 1fr); margin: 39px 0 45px; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.ensure-list > div { padding: 18px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.ensure-list code { color: var(--green); font: 11px var(--mono); font-weight: 700; }
.ensure-list p { margin: 5px 0 0; color: var(--ink-soft); font-family: var(--serif); font-size: 15px; }
.api-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 38px 0; background: var(--rule); border: 1px solid var(--rule); }
.api-strip > div { display: flex; align-items: baseline; justify-content: space-between; gap: 15px; padding: 17px; background: var(--paper); }
.api-strip code { color: var(--green); font: 10px var(--mono); font-weight: 700; }
.api-strip span { color: var(--ink-soft); font: 9px var(--mono); }

.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 42px 0; }
.comparison-card { border: 1px solid var(--rule); background: var(--white); overflow: hidden; }
.comparison-label { display: flex; justify-content: space-between; padding: 13px 14px; border-bottom: 1px solid var(--rule); font-family: var(--mono); }
.comparison-label span { color: var(--green); font-size: 9px; font-weight: 700; letter-spacing: .1em; }
.comparison-label small { color: var(--ink-soft); font-size: 8px; }
.comparison-card pre { margin: 0; padding: 21px 17px; overflow-x: auto; color: #30413a; font: 9.5px/1.7 var(--mono); }
.comparison-card:not(.comparison-card-dark) .syn-punc { color: #6c7a73; }
.comparison-card:not(.comparison-card-dark) .syn-key { color: #48751b; }
.comparison-card:not(.comparison-card-dark) .syn-fn { color: #1b68a1; }
.comparison-card:not(.comparison-card-dark) .syn-str { color: #a84d38; }
.comparison-card:not(.comparison-card-dark) .syn-prop { color: #8b6719; }
.comparison-card:not(.comparison-card-dark) .syn-template { color: #4f7261; }
.comparison-card-dark { border-color: var(--code); background: var(--code); }
.comparison-card-dark .comparison-label { border-color: #3d4c45; }
.comparison-card-dark .comparison-label span { color: var(--acid); }
.comparison-card-dark .comparison-label small { color: #8da097; }
.comparison-card-dark pre { color: #d5e1da; }

.evidence-chapter { position: relative; }
.trace-card { margin: 42px 0; border: 1px solid var(--ink); background: var(--white); box-shadow: 9px 9px 0 var(--acid); font-family: var(--mono); }
.trace-card-head { display: flex; justify-content: space-between; align-items: center; padding: 13px 15px; color: #bdccc4; background: var(--code); font-size: 9px; }
.trace-card-head div { display: flex; gap: 9px; align-items: center; color: #f2f6f3; }
.trace-card-body { padding: 15px; }
.trace-summary { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 13px; background: var(--paper-deep); }
.trace-summary > span { padding: 3px 6px; color: var(--paper); background: var(--green); font-size: 8px; }
.trace-summary > strong { font-size: 12px; }
.trace-summary code { color: var(--ink-soft); font-size: 8px; }
.trace-card dl { margin: 13px 0 0; }
.trace-card dl > div { display: grid; grid-template-columns: 90px 1fr; min-height: 39px; align-items: center; border-top: 1px solid #ddd7cb; font-size: 9px; }
.trace-card dt { color: var(--ink-soft); }
.trace-card dd { display: flex; justify-content: space-between; align-items: center; gap: 15px; margin: 0; }
.trace-card dd > span:not(.tag) { color: var(--ink-soft); }
.principles-list { margin: 38px 0 42px; padding: 0; border-top: 1px solid var(--rule); list-style: none; }
.principles-list li { display: grid; grid-template-columns: 52px 1fr; padding: 19px 0; border-bottom: 1px solid var(--rule); }
.principles-list li > span { color: var(--coral); font: 10px var(--mono); }
.principles-list p { margin: 0; font-family: var(--serif); font-size: 18px; }

.when-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 40px 0; border: 1px solid var(--ink); }
.when-grid > div { padding: 29px; }
.when-grid > div > span { font: 9px var(--mono); font-weight: 700; letter-spacing: .1em; }
.when-grid h3 { margin: 25px 0 22px; font-size: 24px; }
.when-grid ul { margin: 0; padding: 0; list-style: none; }
.when-grid li { position: relative; margin: 0 0 12px; padding-left: 18px; font-family: var(--serif); font-size: 15px; line-height: 1.35; }
.when-grid li::before { position: absolute; left: 0; content: "→"; font-family: var(--mono); }
.when-do { background: var(--acid); }
.when-do > span { color: var(--green); }
.when-dont { color: var(--paper); background: var(--ink); }
.when-dont > span { color: #f59b88; }
.when-dont li::before { content: "×"; color: var(--coral); }

.steps { display: grid; grid-template-columns: repeat(2, 1fr); margin: 42px 0 60px; padding: 0; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); list-style: none; }
.steps li { display: grid; grid-template-columns: 42px 1fr; min-height: 150px; padding: 23px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.steps li > span { color: var(--coral); font: 10px var(--mono); }
.steps h3 { margin: 0 0 9px; font-size: 19px; }
.steps p { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 15px; }
.offline-box { display: grid; grid-template-columns: .8fr 1.2fr; gap: 32px; align-items: center; margin: 60px 0; padding: 32px; border: 1px solid var(--rule); background: var(--paper-deep); }
.offline-box .section-kicker { margin-bottom: 10px; }
.offline-box h3 { margin: 0 0 16px; font-size: 31px; }
.offline-box p:last-child { margin: 0; color: var(--ink-soft); font-family: var(--serif); font-size: 16px; }
.offline-box .code-block { min-width: 0; margin: 0; box-shadow: none; }
.closing-statement { display: grid; grid-template-columns: 52px 1fr; gap: 20px; align-items: start; padding: 34px; color: var(--paper); background: var(--green); }
.closing-statement .brand-mark { color: var(--acid); border-color: var(--acid); }
.closing-statement p { margin: 0; font-family: var(--serif); font-size: clamp(22px, 3vw, 30px); line-height: 1.4; }
.closing-statement strong { color: var(--acid); font-weight: 400; }

.site-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; width: var(--page); min-height: 120px; margin: 0 auto; border-top: 1px solid var(--rule); font-family: var(--mono); font-size: 10px; }
.site-footer p { color: var(--ink-soft); }
.site-footer > a:last-child { justify-self: end; text-underline-offset: 4px; }

@media (max-width: 1080px) {
  .hero { grid-template-columns: 1fr 1fr; gap: 44px; }
  .hero h1 { font-size: clamp(48px, 6vw, 68px); }
  .hero-meta { flex-direction: column; gap: 7px; }
  .article-shell { grid-template-columns: 190px minmax(0, 1fr); gap: 50px; }
  .concept-grid { grid-template-columns: repeat(2, 1fr); }
  .concept-grid > div:nth-child(2) { border-right: 0; }
  .concept-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .offline-box { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  :root { --page: calc(100vw - 32px); }
  html { scroll-padding-top: 75px; }
  .site-header { height: 62px; padding: 0 16px; }
  .header-nav { display: none; }
  .menu-button { display: flex; flex-direction: column; gap: 6px; margin-left: auto; padding: 10px 3px; border: 0; background: transparent; cursor: pointer; }
  .menu-button span:not(.sr-only) { display: block; width: 24px; height: 1px; background: var(--ink); transition: transform .2s; }
  .menu-button[aria-expanded="true"] span:nth-last-child(2) { transform: translateY(3.5px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .mobile-nav { position: absolute; inset: 62px 0 auto; display: grid; padding: 10px 16px 18px; border-bottom: 1px solid var(--rule); background: var(--paper); }
  .mobile-nav[hidden] { display: none; }
  .mobile-nav a { padding: 12px 0; border-bottom: 1px solid var(--rule); font-family: var(--mono); font-size: 12px; text-decoration: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; padding: 70px 0 82px; }
  .hero-copy { max-width: 680px; }
  .hero h1 { font-size: clamp(49px, 11vw, 73px); }
  .hero-meta { flex-direction: row; }
  .hero-console { max-width: 650px; box-shadow: 10px 10px 0 var(--acid), 11px 11px 0 var(--ink); }
  .kernel-band { grid-template-columns: 1fr; gap: 25px; padding: 30px 16px; }
  .article-shell { display: block; width: min(800px, calc(100vw - 32px)); padding-block: 85px 110px; }
  .toc { display: none; }
}

@media (max-width: 600px) {
  .hero { padding-top: 54px; }
  .eyebrow { margin-bottom: 19px; }
  .hero h1 { font-size: clamp(45px, 13.7vw, 67px); letter-spacing: -.06em; }
  .hero-lede { margin-top: 27px; font-size: 20px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .hero-meta { display: grid; gap: 7px; }
  .hero-code { padding: 25px 17px; font-size: 10.5px; }
  .kernel-flow { display: grid; grid-template-columns: 1fr; gap: 10px; }
  .flow-arrow { transform: rotate(90deg); transform-origin: 10px center; }
  .chapter { padding-bottom: 90px; }
  .chapter-header { grid-template-columns: 34px 1fr; gap: 14px; }
  .chapter h2 { font-size: clamp(37px, 11vw, 51px); }
  .prose > .chapter > p { font-size: 18px; }
  .prose .lead { font-size: 21px; }
  .pullquote { padding-left: 19px; }
  .pullquote p { font-size: 27px; }
  .concept-grid { grid-template-columns: 1fr 1fr; }
  .concept-grid > div { min-height: 145px; padding: 15px; }
  .code-block { margin-inline: -8px; }
  .code-block pre { padding: 21px 17px; font-size: 10.5px; }
  .outcome-table { overflow-x: auto; }
  .outcome-table > div { grid-template-columns: 150px 125px 150px; width: 425px; }
  .axiom { grid-template-columns: 1fr; gap: 8px; padding: 23px; }
  .axiom p { font-size: 22px; }
  .pipeline { grid-template-columns: 1fr; gap: 10px; align-items: start; }
  .pipeline > b { transform: rotate(90deg); width: 16px; padding: 0; }
  .ensure-list, .api-strip, .comparison, .when-grid, .steps { grid-template-columns: 1fr; }
  .comparison-card pre { font-size: 9.5px; }
  .when-grid > div { padding: 24px; }
  .trace-card { margin-inline: -5px; }
  .trace-summary { grid-template-columns: auto 1fr; }
  .trace-summary code { grid-column: 1 / -1; }
  .trace-card dl > div { grid-template-columns: 72px 1fr; }
  .trace-card dd { align-items: flex-start; flex-direction: column; gap: 3px; padding-block: 8px; }
  .offline-box { margin-inline: -8px; padding: 20px; }
  .offline-box .code-block { margin-inline: 0; }
  .closing-statement { grid-template-columns: 1fr; padding: 25px; }
  .site-footer { grid-template-columns: 1fr auto; min-height: 100px; }
  .site-footer p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}