/* Display, body and editorial type are Source Serif 4 (variable, latin).
   Public Sans is reserved for nav, buttons and small UI labels. */
@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url("/assets/fonts/sourceserif4-400.woff2") format("woff2");
}
@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/publicsans-400.woff2") format("woff2");
}

:root {
  color-scheme: light; /* The brief explicitly calls for a light site. */
  --paper: #fafbf9;
  --surface: #ffffff;
  --ink: #192c29;
  --ink-2: #334744;
  --muted: #53645f;
  --accent: #006b61; /* Provisional. Change this token after colour approval. */
  --accent-hover: #004f48;
  --tint: #edf5f0;
  --line: #d8e2db;
  --line-strong: #9aafa6;
  --error: #a22d25;
  --radius: 8px;
  --font-serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --font-sans: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  /* Layer scale: normal flow 0; diagram connectors 1; nodes 2; menu 3; skip link 4. */
  font-family: var(--font-serif);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 16px; line-height: 1.6; }
img, svg { max-width: 100%; }
img { display: block; }
a { color: inherit; text-underline-offset: 0.2em; }
button, input, select, textarea { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button:disabled { cursor: not-allowed; }
::selection { background: #c7e4d8; color: var(--ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.wrap { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.icon { width: 21px; height: 21px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.skip-link { position: absolute; z-index: 4; top: 12px; left: 16px; padding: 12px 18px; background: var(--ink); color: var(--paper); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { height: 80px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; white-space: nowrap; font-family: var(--font-sans); font-size: 17px; font-weight: 600; letter-spacing: -0.3px; }
.brand img { width: 124px; height: 42px; object-fit: contain; }
.desktop-nav { display: flex; align-items: center; gap: 25px; margin-left: auto; }
.desktop-nav a { font-family: var(--font-sans); font-size: 13px; font-weight: 500; text-decoration: none; white-space: nowrap; padding-block: 8px; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--accent); }
.desktop-nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 9px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 25px; min-height: 47px; padding: 11px 19px; border: 1px solid var(--accent); border-radius: var(--radius); background: var(--accent); color: #fff; text-decoration: none; font-family: var(--font-sans); font-size: 14px; line-height: 1.5; font-weight: 600; letter-spacing: 0.01em; white-space: nowrap; transition: background 160ms, transform 160ms; }
.button:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.button:active { transform: scale(0.98); }
.button.secondary { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.button.secondary:hover { background: var(--tint); border-color: var(--accent); }
.header-cta { min-height: 40px; padding: 8px 15px; gap: 16px; font-size: 13px; }
.mobile-nav { display: none; margin-left: auto; }
.mobile-nav > summary { list-style: none; display: flex; align-items: center; gap: 9px; min-height: 44px; font-family: var(--font-sans); font-size: 14px; }
.mobile-nav > summary::-webkit-details-marker { display: none; }
.mobile-links { position: absolute; z-index: 3; top: 72px; left: 0; right: 0; display: grid; gap: 3px; background: var(--paper); border-bottom: 1px solid var(--line-strong); padding: 18px 24px 26px; box-shadow: 0 16px 22px rgb(25 44 41 / 6%); }
.mobile-links a { padding: 10px 4px; text-decoration: none; font-family: var(--font-sans); }
.mobile-links a[aria-current="page"] { color: var(--accent); font-weight: 650; }
.mobile-links .button { margin-top: 12px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { font-family: var(--font-serif); font-size: clamp(40px, 4.5vw, 64px); font-weight: 500; letter-spacing: -0.022em; line-height: 1.08; margin-bottom: 26px; }
h2 { font-family: var(--font-serif); font-size: clamp(30px, 3.1vw, 44px); font-weight: 500; line-height: 1.14; letter-spacing: -0.018em; margin-bottom: 22px; }
h3 { font-family: var(--font-serif); font-size: 23px; line-height: 1.28; letter-spacing: -0.012em; font-weight: 500; margin-bottom: 14px; }
p { margin-bottom: 20px; }
.eyebrow { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em; font-weight: 600; color: var(--accent); margin-bottom: 22px; }
.lede { font-family: var(--font-serif); font-size: 18px; line-height: 1.55; color: var(--ink); font-weight: 400; max-width: 720px; }
.lede em { font-style: italic; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
.text-link { display: inline-flex; align-items: center; gap: 14px; font-family: var(--font-sans); font-size: 13px; font-weight: 600; letter-spacing: 0.02em; color: var(--accent); text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.text-link .icon { width: 18px; height: 18px; }
.home-hero { padding-top: 56px; padding-bottom: 48px; }
.home-hero h1 { max-width: 1180px; }
.home-hero .lede { max-width: 850px; font-size: 15px; line-height: 1.65; }
.home-hero h1 em { font-style: normal; color: var(--accent); }
.hero-human-row { display: grid; grid-template-columns: 0.85fr 1.3fr; gap: 70px; align-items: center; margin-top: 34px; }
.hero-human-row .lede { font-size: 18px; line-height: 1.7; }
.hero-human-row .actions { gap: 10px; }
.hero-human-row .button { gap: 15px; padding-inline: 16px; }
.editorial-photo { margin: 0; }
.editorial-photo img { width: 100%; object-fit: cover; border-radius: var(--radius); }
.editorial-photo figcaption { margin-top: 10px; color: var(--muted); font-style: italic; font-size: 12px; line-height: 1.55; }
.editorial-photo figcaption a { color: inherit; }
.hero-photo img { height: 310px; object-position: center 42%; }
.input-note { position: relative; width: fit-content; background: var(--surface); padding-right: 8px; font-size: 10px; color: var(--muted); margin: 10px 0 0; }
.knowledge-feature { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 75px; align-items: center; }
.knowledge-feature p { font-size: 16px; }
.knowledge-figure { margin: 0; background: var(--tint); border-radius: 12px; padding: 24px 10px 20px; }
.knowledge-figure svg { display: block; width: 100%; height: auto; }
.knowledge-figure figcaption { padding-inline: 20px; font-size: 11px; color: var(--muted); }
.graph-principles { padding: 32px; background: var(--tint); border-radius: var(--radius); }
.graph-principles > div + div { margin-top: 25px; padding-top: 25px; border-top: 1px solid #b8d2c4; }
.graph-principles h3 { font-size: 21px; margin-bottom: 8px; }
.graph-principles p { margin-bottom: 0; font-size: 14px; color: var(--muted); }
.human-story { display: grid; grid-template-columns: 0.8fr 1fr; gap: 110px; align-items: center; }
.community-photo img { height: 470px; object-position: center 58%; }
.page-hero { padding-block: 76px 62px; }
.page-hero h1 { max-width: 1000px; }
.page-hero .lede { max-width: 760px; }
.page-hero.compact { padding-bottom: 42px; }
.section { padding-block: 88px; }
.section-rule { border-top: 1px solid var(--line); }
.section-intro { max-width: 690px; margin-bottom: 38px; }
.section-intro > p { color: var(--muted); }
.section-intro h2:last-child { margin-bottom: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.status { display: inline-block; color: var(--accent); font-family: var(--font-sans); font-size: 11px; font-weight: 600; border: 1px solid #b8d2c4; border-radius: 4px; padding: 4px 9px; line-height: 1.5; }
.notice { border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 20px 24px; font-size: 14px; background: var(--tint); }
.notice p:last-child { margin-bottom: 0; }

/* The actual signal-flow diagram, not a screenshot of the product. */
.signal-figure { margin: 42px 0 0; }
.signal-flow { --flow-gap: 58px; --bus-offset: min(22px, calc(var(--flow-gap) / 2)); position: relative; isolation: isolate; display: grid; grid-template-columns: 1fr 1.08fr 1.23fr; gap: var(--flow-gap); align-items: center; padding: 32px 36px 76px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.flow-node { position: relative; z-index: 2; min-width: 0; }
/* Connectors are drawn from the live layout, never from a stretched overlay,
   so they stay attached when columns, gaps or copy lengths change. */

/* Vertical bus bracketing the signal list, plus a stub from each input into it. */
.signal-stack::before { content: ""; position: absolute; z-index: 1; top: 4px; bottom: 0; left: calc(100% + var(--bus-offset)); width: 2px; background: var(--accent); }
.signal-input { position: relative; }
.signal-input::after { content: ""; position: absolute; z-index: 1; top: 50%; left: 100%; width: calc(var(--bus-offset) + 2px); height: 2px; background: var(--accent); margin-top: -1px; }

/* Pseudo-elements need an HTML host, not the SVG. The port offset follows
   preserveAspectRatio="xMidYMid meet": ports at x=48 and x=212 are 82 units
   either side of centre in the 260 x 180 viewBox, whichever dimension limits
   the scale. Keep the artwork above the lines so its port circles stay clear. */
.core-visual { --core-height: 169px; --core-port-offset: min(calc(var(--core-height) * 0.45555556), 31.538462%); position: relative; height: var(--core-height); margin-bottom: 4px; }
.core-visual::before, .core-visual::after { content: ""; position: absolute; z-index: 1; top: 50%; height: 2px; background: var(--accent); margin-top: -1px; pointer-events: none; }
.core-visual::before { left: calc(var(--bus-offset) - var(--flow-gap)); right: calc(50% + var(--core-port-offset)); }
.core-visual::after { left: calc(50% + var(--core-port-offset)); right: calc(-1 * var(--flow-gap)); }

/* Continuous feedback loop: a full-width return bracket under the diagram.
   It uses short fixed upturns and never touches the elements above, so no
   join depends on a variable element height. */
.flow-loop { position: absolute; z-index: 1; left: 36px; right: 36px; bottom: 22px; height: 28px; border: 2px solid var(--accent); border-top: 0; border-radius: 0 0 10px 10px; }
.flow-loop .loop-arrow { position: absolute; left: -6px; top: -6px; width: 10px; height: 10px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); transform: rotate(45deg); }
.diagram-label { font-family: var(--font-sans); font-size: 10px; line-height: 1.5; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-bottom: 13px; }
.signal-input { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); margin-top: 8px; }
.signal-input summary { display: flex; align-items: center; gap: 12px; list-style: none; padding: 12px 14px; font-family: var(--font-sans); font-size: 13px; font-weight: 600; line-height: 1.4; }
.signal-input summary::-webkit-details-marker, .source summary::-webkit-details-marker { display: none; }
.signal-input summary > .icon { color: var(--accent); width: 23px; height: 23px; }
.signal-input summary small { display: block; font-family: var(--font-serif); font-size: 12px; font-weight: 400; color: var(--muted); margin-top: 3px; }
.signal-input summary::after { content: "+"; margin-left: auto; color: var(--muted); font-family: var(--font-sans); font-size: 16px; font-weight: 400; }
.signal-input[open] summary::after { content: "−"; }
.signal-input[open] summary { border-bottom: 1px solid var(--line); }
.signal-input p { margin: 0; padding: 12px 14px; font-size: 13px; color: var(--muted); }
.pulse-core { text-align: center; }
.core-art { position: relative; z-index: 2; display: block; height: 100%; width: 100%; color: var(--accent); }
.pulse-core h2 { font-size: 22px; font-weight: 500; letter-spacing: -0.012em; margin-bottom: 8px; }
.pulse-core p { font-size: 12px; line-height: 1.55; color: var(--muted); max-width: 235px; margin: 0 auto; }
.answer-card { padding: 21px; border: 1px solid #b8d2c4; border-radius: var(--radius); background: var(--tint); }
.answer-topline { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 18px; }
.answer-topline .diagram-label { color: var(--accent); margin: 0; }
.example-label { font-family: var(--font-sans); font-size: 9px; color: var(--muted); white-space: nowrap; }
.answer-card h3 { font-size: 16px; line-height: 1.4; margin-bottom: 11px; }
.answer-copy { font-size: 13px; line-height: 1.55; margin-bottom: 16px; }
.source-list { display: flex; gap: 6px; flex-wrap: wrap; padding-top: 14px; border-top: 1px solid #c9dcd0; }
.source { font-size: 10px; }
.source summary { display: inline-flex; align-items: center; gap: 4px; list-style: none; padding: 5px 7px; border: 1px solid #b8d2c4; border-radius: 4px; background: var(--surface); color: var(--accent); font-family: var(--font-sans); font-weight: 600; }
.source summary:hover, .source[open] summary { border-color: var(--accent); }
.source summary .icon { width: 13px; height: 13px; }
.source[open] { flex-basis: 100%; }
.source-content { margin-top: 10px; font-size: 12px; color: var(--muted); }
.source-content p { margin-bottom: 9px; }
.source-content audio { width: 100%; height: 34px; margin-block: 4px 8px; }
.feedback-label { position: absolute; z-index: 2; bottom: 30px; left: 50%; transform: translateX(-50%); background: var(--surface); color: var(--accent); padding-inline: 13px; font-family: var(--font-sans); font-size: 10px; white-space: nowrap; }
.diagram-caption { margin-top: 11px; font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; }
.diagram-caption a { color: var(--accent); }

/* A five-stage chain. Numbers are framework stages, not decorative section numbering. */
.chain { margin: 0; position: relative; padding-bottom: 43px; }
.chain-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); }
.chain-list > li { min-width: 0; position: relative; }
.chain-list > li + li { border-left: 1px solid #b8d2c4; }
.chain-list > li:not(:last-child)::after { content: "→"; position: absolute; right: -9px; top: 29px; z-index: 2; color: var(--accent); background: var(--tint); font-family: var(--font-sans); font-size: 13px; padding-inline: 3px; pointer-events: none; }
.chain-item { display: flex; flex-direction: column; min-height: 164px; height: 100%; padding: 24px 19px; background: var(--tint); text-decoration: none; border-top: 2px solid var(--accent); }
.chain-item:hover { background: #e0eee5; }
.chain-number { font-family: var(--font-sans); font-size: 11px; font-weight: 600; color: var(--accent); margin-bottom: 18px; font-variant-numeric: tabular-nums; }
.chain-item h3 { font-size: 18px; line-height: 1.25; margin: 0 0 9px; }
.chain-item small { font-family: var(--font-sans); font-size: 10px; color: var(--accent); letter-spacing: 0.02em; }
.chain-return { position: absolute; bottom: 11px; left: 5%; width: 90%; height: 25px; border: 1px solid var(--accent); border-top: 0; border-radius: 0 0 12px 12px; }
.chain-return::before { content: ""; position: absolute; top: -1px; left: -4px; width: 7px; height: 7px; border-top: 1px solid var(--accent); border-left: 1px solid var(--accent); transform: rotate(45deg); }
.chain-return span { position: absolute; left: 50%; bottom: -9px; transform: translateX(-50%); font-family: var(--font-sans); font-size: 10px; color: var(--accent); background: var(--paper); padding-inline: 12px; white-space: nowrap; }
.chain-tagline { margin-top: 26px; font-size: 19px; letter-spacing: -0.012em; line-height: 1.4; }
.chain-note { font-size: 13px; color: var(--muted); max-width: 720px; margin: 16px 0 0; }
.why-block { display: grid; grid-template-columns: 1fr 1.15fr; gap: 100px; align-items: start; }
.why-block p { font-size: 20px; line-height: 1.55; color: var(--ink); margin-bottom: 0; }
.customer-feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: center; }
.surface-wordmarks { display: flex; align-items: center; flex-wrap: wrap; gap: 38px; padding-block: 28px; }
.surface-wordmarks a { text-decoration: none; }
.wordmark-outside { font-size: 32px; font-weight: 700; letter-spacing: -1.8px; }
.wordmark-yuh { font-size: 24px; line-height: 1.1; font-weight: 600; letter-spacing: -1.1px; }
.customer-note { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tint); }
.customer-note p { margin-top: 18px; margin-bottom: 12px; }
.editorial-row { display: grid; grid-template-columns: 0.65fr 1.7fr 0.25fr; gap: 40px; align-items: start; text-decoration: none; }
.editorial-row h3 { font-size: 30px; max-width: 640px; font-weight: 500; line-height: 1.18; }
.editorial-row p { max-width: 600px; color: var(--muted); font-size: 15px; margin-bottom: 0; }
.editorial-row > .icon { justify-self: end; width: 29px; height: 29px; color: var(--accent); }
a.editorial-row:hover h3 { color: var(--accent); }
.cta-band { padding-block: 60px; border-block: 1px solid var(--line); background: var(--tint); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-inner h2 { font-size: clamp(30px, 3.4vw, 46px); margin-bottom: 9px; }
.cta-inner p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
.cta-inner .actions { margin-top: 0; flex-shrink: 0; }
.site-footer { padding-top: 44px; }
.footer-top { display: flex; justify-content: space-between; align-items: start; gap: 50px; padding-bottom: 35px; }
.footer-description { max-width: 340px; margin: 13px 0 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 60px; }
.footer-links div { display: grid; gap: 8px; align-content: start; }
.footer-links a { font-family: var(--font-sans); font-size: 12px; text-decoration: none; color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; border-top: 1px solid var(--line); padding-block: 20px; font-family: var(--font-sans); font-size: 10px; color: var(--muted); letter-spacing: 0.04em; }

/* Platform */
.chain.detailed .chain-item { min-height: 260px; padding: 24px 19px 20px; }
.detailed .chain-number { display: flex; justify-content: space-between; align-items: center; margin-bottom: 29px; }
.detailed .chain-number .icon { width: 25px; height: 25px; }
.detailed .chain-item h3 { font-size: 19px; }
.detailed .chain-item p { font-size: 12px; line-height: 1.6; color: var(--muted); margin: 13px 0 22px; }
.detailed .chain-item small { margin-top: auto; }
.framework-credit { max-width: 820px; margin-top: 27px; color: var(--muted); font-size: 13px; }
.framework-credit a { color: var(--accent); }
.stage-details { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 80px; align-items: start; }
.stage-details > h2 { position: sticky; top: 40px; max-width: 320px; }
.stage-detail { padding-block: 25px; border-top: 1px solid var(--line); scroll-margin-top: 30px; }
.stage-detail:first-child { padding-top: 0; border-top: 0; }
.stage-detail summary { display: grid; grid-template-columns: 32px 1fr 20px; align-items: baseline; gap: 13px; list-style: none; }
.stage-detail summary::-webkit-details-marker { display: none; }
.stage-detail summary > span:first-child { color: var(--accent); font-family: var(--font-sans); font-size: 12px; font-weight: 600; }
.stage-detail summary h3 { font-size: 24px; margin: 0; }
.stage-detail summary::after { content: "+"; color: var(--accent); font-family: var(--font-sans); font-size: 22px; }
.stage-detail[open] summary::after { content: "−"; }
.stage-detail > p { margin: 18px 0 0 45px; color: var(--ink-2); font-size: 16px; }
.architecture { display: grid; grid-template-columns: 1fr 1.3fr 1fr; border-block: 1px solid var(--line); margin-top: 36px; }
.architecture > div { padding: 30px 32px 30px 0; }
.architecture > div + div { border-left: 1px solid var(--line); padding-left: 32px; }
.architecture .icon { color: var(--accent); margin-bottom: 18px; width: 30px; height: 30px; }
.architecture h3 { font-size: 26px; }
.architecture p { color: var(--ink-2); font-size: 15px; margin-bottom: 0; }
.architecture-note { margin-top: 20px; font-size: 13px; color: var(--muted); }

/* Use cases, government, customers, about and editorial pages */
.feature-layout { display: grid; grid-template-columns: 1.3fr 0.85fr; gap: 85px; align-items: start; }
.feature-layout .body-copy { max-width: 650px; }
.body-copy { color: var(--ink-2); font-size: 17px; }
.body-copy p:last-child { margin-bottom: 0; }
.use-list { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 42px; list-style: none; padding: 0; margin: 34px 0 0; }
.use-list li { padding-left: 28px; position: relative; font-size: 15px; color: var(--ink-2); }
.use-list .icon { position: absolute; left: 0; top: 2px; width: 18px; height: 18px; color: var(--accent); }
.mini-flow { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tint); margin-bottom: 22px; }
.mini-flow svg { display: block; width: 100%; height: auto; color: var(--accent); }
.mini-flow figcaption { color: var(--muted); font-size: 13px; margin-top: 18px; }
.mini-flow figure { margin: 0; }
.callout { padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tint); }
.callout .status + h3 { margin-top: 20px; }
.callout h3 { font-size: 22px; }
.measure { max-width: 760px; }
.subsection-heading { margin-top: 45px; }
.aside-note { margin-top: 20px; }
.callout p { color: var(--ink-2); font-size: 15px; }
.callout p:last-child { margin-bottom: 0; }
.commitments { counter-reset: commitment; border-top: 1px solid var(--line); }
.commitment { display: grid; grid-template-columns: 0.9fr 0.85fr 1.25fr; gap: 48px; padding-block: 32px; border-bottom: 1px solid var(--line); }
.commitment h3 { display: flex; gap: 18px; font-size: 22px; align-items: baseline; }
.commitment h3::before { counter-increment: commitment; content: "0" counter(commitment); font-family: var(--font-sans); font-size: 11px; line-height: 1; color: var(--accent); font-weight: 600; }
.commitment p { font-size: 15px; color: var(--ink-2); margin-bottom: 0; }
.commitment p strong { display: block; font-family: var(--font-sans); font-weight: 600; color: var(--ink); margin-bottom: 7px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }
.surface-card { display: grid; grid-template-columns: 0.7fr 1.4fr; gap: 75px; padding-block: 38px; border-top: 1px solid var(--line); }
.surface-card h2 { font-size: 32px; margin-bottom: 18px; }
.surface-card p { max-width: 680px; color: var(--ink-2); }
.surface-card .status { margin-bottom: 18px; }
.story-grid { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 85px; }
.story-grid h2 { max-width: 320px; }
.story-grid .body-copy { max-width: 680px; }
.planned-piece { padding: 38px 0 70px; }
.planned-piece .status { margin-bottom: 26px; }
.planned-piece h2 { max-width: 800px; }
.planned-piece p { max-width: 670px; color: var(--ink-2); }
.legal-content { max-width: 800px; padding-bottom: 88px; }
.legal-content h2 { margin-top: 38px; font-size: 27px; }
.legal-content p, .legal-content li { color: var(--ink-2); font-size: 16px; }
.legal-content li + li { margin-top: 10px; }

/* The form is inert in the review build. A real HTTPS action unlocks it. */
.contact-layout { display: grid; grid-template-columns: 1.35fr 0.7fr; gap: 100px; align-items: start; padding-bottom: 88px; }
.contact-main { min-width: 0; }
.contact-main h2 { font-size: 26px; margin-top: 42px; }
.contact-email { padding: 30px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--tint); }
.contact-email-label { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em; font-weight: 600; color: var(--accent); margin-bottom: 16px; }
.contact-email-link { gap: 18px; font-size: 17px; }
.contact-email-link .icon { width: 18px; height: 18px; }
.contact-email-note { margin: 18px 0 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.contact-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.contact-list li { padding-left: 22px; position: relative; color: var(--ink-2); font-size: 16px; }
.contact-list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.contact-list strong { color: var(--ink); font-weight: 600; }
.contact-aside { padding-top: 4px; }
.contact-aside h2 { font-size: 26px; }
.contact-aside > div + div { border-top: 1px solid var(--line); padding-top: 30px; margin-top: 30px; }
.contact-aside p { color: var(--ink-2); font-size: 15px; }
.privacy-note { font-size: 12px; color: var(--muted); margin-top: 18px; }

@media (min-width: 1440px) {
  .home-hero h1 { font-size: 58px; }
}
@media (max-width: 1199px) {
  .wrap { width: calc(100% - 64px); }
  .desktop-nav { gap: 16px; }
  .header-inner { gap: 22px; }
  .brand { font-size: 20px; }
  .brand img { width: 112px; height: 38px; }
  .desktop-nav a { font-size: 12px; }
  .header-cta { gap: 9px; padding-inline: 12px; }
  .signal-flow { --flow-gap: 38px; padding-inline: 24px; }
  .answer-card { padding: 16px; }
  .source summary { padding-inline: 5px; }
  .example-label { font-size: 8px; }
  .why-block, .customer-feature, .stage-details, .feature-layout, .story-grid { gap: 50px; }
  .contact-layout { gap: 60px; }
  .hero-human-row { gap: 40px; grid-template-columns: 1fr 1.1fr; }
  .hero-human-row .actions { flex-direction: column; align-items: start; }
  .knowledge-feature, .human-story { gap: 50px; }
}
@media (max-width: 1023px) {
  .desktop-nav, .header-cta { display: none; }
  .mobile-nav { display: block; }
  .header-inner { height: 72px; }
  .home-hero { padding-top: 44px; }
  .signal-flow { --flow-gap: 22px; padding-inline: 20px; }
  .signal-input summary { gap: 8px; padding: 10px; font-size: 12px; }
  .answer-topline { align-items: start; flex-direction: column; gap: 3px; margin-bottom: 11px; }
  .chain-item { padding-inline: 13px; }
  .chain-item h3 { font-size: 15px; }
  .chain.detailed .chain-item { padding-inline: 13px; min-height: 290px; }
  .commitment { gap: 25px; }
  .cta-inner { flex-direction: column; align-items: start; gap: 20px; }
}
@media (max-width: 767px) {
  .wrap { width: calc(100% - 40px); }
  .home-hero { padding-top: 35px; }
  h1 { font-size: clamp(36px, 8.5vw, 50px); letter-spacing: -0.02em; line-height: 1.08; }
  h2 { font-size: clamp(26px, 6.5vw, 34px); }
  h3 { font-size: clamp(20px, 5vw, 24px); }
  .eyebrow { font-size: 10px; letter-spacing: 0.14em; margin-bottom: 17px; }
  .lede { font-size: 17px; }
  .home-hero .lede { font-size: 16px; }
  .hero-human-row, .knowledge-feature, .human-story { grid-template-columns: 1fr; gap: 28px; }
  .hero-human-row { margin-top: 24px; }
  .hero-human-row .actions { flex-direction: row; }
  .hero-human-row .lede { font-size: 16px; }
  .hero-photo img { height: 255px; }
  .community-photo img { height: 350px; }
  .human-story > div { grid-row: 1; }
  .knowledge-figure { padding-inline: 4px; }
  .knowledge-figure figcaption { font-size: 10px; }
  .page-hero { padding-block: 46px 38px; }
  .page-hero.compact { padding-bottom: 30px; }
  .actions { gap: 10px; }
  .button { gap: 17px; padding-inline: 16px; font-size: 13px; }
  .signal-figure { margin-top: 32px; }
  .signal-flow { --flow-gap: 18px; grid-template-columns: 1fr; padding: 26px 24px 80px; }
  /* Stacked layout: connect the signal group into the logo plate, then the
     core description into the answer. No disconnected side stubs. */
  .signal-stack::before, .signal-input::after, .core-visual::after { display: none; }
  .core-visual { --core-height: 140px; }
  .core-visual::before { top: calc(-1 * (var(--flow-gap) + 8px)); bottom: 70%; left: 50%; right: auto; width: 2px; height: auto; margin-top: 0; transform: translateX(-50%); }
  .pulse-core::after { content: ""; position: absolute; top: 100%; left: 50%; width: 2px; height: var(--flow-gap); background: var(--accent); transform: translateX(-50%); pointer-events: none; }
  .flow-loop { left: 24px; right: 24px; bottom: 22px; height: 24px; }
  .signal-input summary { font-size: 13px; padding: 12px; }
  .signal-input summary small { font-size: 11px; }
  .pulse-core { padding-block: 8px; background: var(--surface); }
  .pulse-core p { max-width: 250px; font-size: 12px; }
  .answer-topline { flex-direction: row; align-items: center; }
  .answer-card { padding: 20px; }
  .answer-card h3 { font-size: 17px; }
  .answer-copy { font-size: 13px; }
  .source { font-size: 11px; }
  .source summary { gap: 5px; padding: 6px 8px; }
  .feedback-label { bottom: 11px; font-size: 9px; }
  .section { padding-block: 56px; }
  .section-intro { margin-bottom: 28px; }
  .chain-list { grid-template-columns: 1fr; gap: 6px; }
  .chain-list > li + li { border-left: 0; }
  .chain-list > li:not(:last-child)::after { display: none; }
  .chain-item { min-height: auto; display: grid; grid-template-columns: 30px 1fr; column-gap: 14px; align-items: center; padding: 18px 20px; border-top: 0; border-left: 2px solid var(--accent); }
  .chain-number { grid-row: 1 / 3; margin: 0; }
  .chain-item h3 { font-size: 18px; margin-bottom: 0; }
  .chain-item small { grid-column: 2; margin-top: 5px; font-size: 11px; }
  .chain-return { left: 5px; width: calc(100% - 10px); }
  .chain-return span { font-size: 9px; }
  .chain-tagline { font-size: 17px; }
  .why-block, .customer-feature, .stage-details, .feature-layout, .story-grid, .contact-layout { grid-template-columns: 1fr; gap: 28px; }
  .why-block p { font-size: 17px; }
  .surface-wordmarks { padding-block: 12px 24px; gap: 28px; }
  .customer-note { padding: 25px; }
  .editorial-row { grid-template-columns: 1fr 30px; gap: 20px; }
  .editorial-row > .small { grid-column: 1 / -1; }
  .editorial-row h3 { font-size: 25px; }
  .editorial-row p { font-size: 13px; }
  .cta-band { padding-block: 40px; }
  .footer-top { flex-direction: column; gap: 28px; padding-bottom: 27px; }
  .footer-links { gap: 70px; }
  .footer-bottom { font-size: 10px; }
  .chain.detailed .chain-item { min-height: auto; padding: 23px 20px; grid-template-columns: 35px 1fr; }
  .detailed .chain-number { grid-row: 1 / 4; align-self: start; flex-direction: column; gap: 15px; margin: 0; }
  .detailed .chain-item h3 { font-size: 21px; }
  .detailed .chain-item p { grid-column: 2; margin-block: 9px; font-size: 13px; }
  .stage-details > h2 { position: static; }
  .stage-detail summary { gap: 8px; grid-template-columns: 25px 1fr 20px; }
  .stage-detail summary h3 { font-size: 20px; }
  .stage-detail > p { margin-left: 33px; font-size: 14px; }
  .architecture { grid-template-columns: 1fr; }
  .architecture > div { padding: 25px 0; }
  .architecture > div + div { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .architecture .icon { margin-bottom: 13px; }
  .use-list { grid-template-columns: 1fr; gap: 20px; }
  .mini-flow { max-width: 420px; }
  .commitment { grid-template-columns: 1fr; gap: 16px; padding-block: 28px; }
  .commitment h3 { margin-bottom: 0; }
  .commitment p { margin-left: 31px; }
  .surface-card { grid-template-columns: 1fr; gap: 6px; padding-block: 30px; }
  .surface-card h2 { margin-bottom: 10px; }
  .planned-piece { padding-block: 20px 50px; }
  .contact-layout { padding-bottom: 56px; }
  .contact-aside { border-top: 1px solid var(--line); padding-top: 30px; }
  .contact-email { padding: 24px; }
  .contact-email-link { width: 100%; }
  .notice { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}
@media (forced-colors: active) {
  .button, .status, .signal-input, .answer-card, .notice { border: 1px solid ButtonText; }
  .chain-item { border: 1px solid CanvasText; }
}