@charset "UTF-8";

:root {
  color-scheme: light;
  --paper: #f5f3ec;
  --ink: #102c36;
  --muted: #53666a;
  --line: #cdd4cd;
  --green: #245d4d;
  --mint: #ace5d2;
  --navy: #102c36;
  --governed-surface: var(--navy);
  --governed-edge: transparent;
  --body-ink: #3a545b;
  --surface: #eeeee5;
  --surface-raised: #e8ece3;
  --callout: #e6ebe2;
  --warning: #ede9dd;
  --focus: #997121;
  --strong-line: #aebcb2;
  --scenario-line: #bacabc;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-family: var(--sans);
  font-size: 100%;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

@media screen and (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #0c1c23;
    --ink: #e4ede8;
    --muted: #b0c1bc;
    --green: #a0d4bf;
    --line: #31474d;
    --body-ink: #c0d0cb;
    --surface: #122830;
    --surface-raised: #172f36;
    --governed-surface: #244e5c;
    --governed-edge: #527884;
    --callout: #18312f;
    --warning: #332d1e;
    --focus: #dabf77;
    --strong-line: #3b5557;
    --scenario-line: #3b5557;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0c1c23;
  --ink: #e4ede8;
  --muted: #b0c1bc;
  --green: #a0d4bf;
  --line: #31474d;
  --body-ink: #c0d0cb;
  --surface: #122830;
  --surface-raised: #172f36;
  --governed-surface: #244e5c;
  --governed-edge: #527884;
  --callout: #18312f;
  --warning: #332d1e;
  --focus: #dabf77;
  --strong-line: #3b5557;
  --scenario-line: #3b5557;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 36px; }
body { margin: 0; font-size: 1.0625rem; }
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: 4px; }
button, input { font: inherit; color: inherit; cursor: pointer; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
::selection { background: var(--mint); color: var(--navy); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; overflow-wrap: anywhere; }
h1 { font-size: clamp(3.2rem, 5.4vw, 5.4rem); letter-spacing: -.065em; font-weight: 540; margin-bottom: 30px; }
h2 { font-size: clamp(2.2rem, 3.8vw, 3.8rem); letter-spacing: -.05em; font-weight: 520; margin-bottom: 26px; }
h3 { font-size: 1.35rem; letter-spacing: -.025em; font-weight: 600; margin-bottom: 16px; }
em { font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: -.065em; }
p { margin-bottom: 1.2em; }
.wrap { width: min(1240px, calc(100% - 112px)); margin-inline: auto; }
.eyebrow { font-family: var(--mono); font-size: .8125rem; font-weight: 500; text-transform: uppercase; letter-spacing: .08em; line-height: 1.6; margin-bottom: 26px; }
.status-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--green); margin-right: 9px; vertical-align: 1px; }
.skip-link { position: fixed; z-index: 5; top: 0; left: 16px; max-width: calc(100% - 32px); transform: translateY(calc(-100% - 10px)); background: var(--ink); color: var(--paper); padding: 12px 20px; }
.skip-link:focus { top: 10px; transform: none; }
.site-header { min-height: 100px; padding: 24px 56px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 1.5rem; font-weight: 650; letter-spacing: .13em; flex-shrink: 0; }
.brand-descriptor { font: .75rem/1.5 var(--mono); letter-spacing: .02em; max-width: 124px; margin-left: 10px; padding-left: 20px; border-left: 1px solid var(--line); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.theme-control { display: grid; place-items: center; width: 44px; height: 44px; margin: 0 0 0 auto; padding: 0; flex-shrink: 0; border: 0; border-radius: 4px; background: transparent; color: var(--muted); }
.theme-control svg { display: none; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.theme-control[data-mode="dark"] .theme-icon-light, .theme-control[data-mode="light"] .theme-icon-dark { display: block; }
.theme-control:hover { color: var(--ink); background: var(--surface-raised); }
.theme-control:focus-visible { outline-offset: 1px; }
.site-header nav { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 26px; font-size: .9375rem; font-weight: 550; }
.site-header nav a { text-decoration: none; padding-block: 8px; }
.site-header nav a:hover, .text-link:hover, .contents a:hover { color: var(--green); }
.site-header .nav-technical { border-bottom: 1px solid var(--ink); }
.nav-technical span { margin-left: 12px; }
.hero { padding-top: 78px; padding-bottom: 72px; display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr); gap: 62px; align-items: center; }
.hero > *, .technical-content { min-width: 0; }
.hero .eyebrow { margin-bottom: 32px; }
.hero-lede { font-size: clamp(1.1rem, 1.6vw, 1.35rem); line-height: 1.55; max-width: 540px; }
.institutional-proposition { max-width: 76ch; margin-top: 28px; padding-left: 20px; border-left: 2px solid var(--green); }
.institutional-proposition h2 { font-size: 1.0625rem; font-weight: 650; letter-spacing: -.01em; line-height: 1.45; margin-bottom: 12px; color: var(--green); }
.institutional-proposition p { font-size: 1.0625rem; line-height: 1.65; }
.institutional-proposition p:last-child { margin-bottom: 0; }
.institutional-proposition strong { font-weight: 650; }
.institutional-proposition .proposition-detail { color: var(--body-ink); }
.actions { display: flex; align-items: center; gap: 28px; margin-top: 32px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 100%; font-size: 1rem; font-weight: 550; line-height: 1.5; padding: 15px 21px; text-decoration: none; border: 1px solid transparent; }
.button.primary { background: var(--ink); color: var(--paper); }
.button.primary:hover { background: var(--green); }
.text-link { display: inline-flex; align-items: center; gap: 12px; font-size: 1rem; font-weight: 550; text-decoration: none; border-bottom: 1px solid currentColor; padding: 5px 0; }
.print-control { background: transparent; border-top: 0; border-left: 0; border-right: 0; }
.hero-signature { display: flex; flex-wrap: wrap; gap: 9px 20px; margin-top: 44px; font: .8125rem/1.6 var(--mono); color: var(--muted); }
.hero-signature .signature-mark { color: var(--green); margin-right: 7px; }
.kernel-visual { min-height: 516px; padding: 28px; background-color: var(--governed-surface); box-shadow: inset 0 0 0 1px var(--governed-edge); color: #d9ece5; position: relative; overflow: hidden; background-image: linear-gradient(#ffffff05 1px, transparent 1px), linear-gradient(90deg, #ffffff05 1px, transparent 1px); background-size: 26px 26px; border-radius: 2px; }
.visual-topline { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; font: .8125rem/1.5 var(--mono); letter-spacing: .02em; margin-bottom: 36px; }
.visual-tag { color: var(--mint); border: 1px solid #ace5d24d; padding: 4px 6px; font-size: .8125rem; }
.application-rail, .capability-rail { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; text-align: center; font-size: .875rem; overflow-wrap: anywhere; }
.capability-rail, .visual-connections.lower { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, .6fr) minmax(0, 1.5fr); }
.application-rail span { display: grid; place-content: center; padding: 9px 3px; border: 1px solid #9dc1b840; background: #18363f; }
.visual-connections { display: flex; justify-content: space-around; padding-inline: 25px; height: 45px; }
.visual-connections i { width: 1px; background: linear-gradient(#6a9f9099, var(--mint)); position: relative; }
.visual-connections i::after { content: ""; position: absolute; width: 4px; height: 4px; background: var(--mint); bottom: 0; left: -1.5px; }
.kernel-core { position: relative; display: flex; align-items: center; flex-direction: column; padding: 23px 10px; border: 1px solid #ace5d299; background: #173c44; isolation: isolate; }
.kernel-core img { margin-top: 14px; margin-bottom: 5px; }
.kernel-core strong { font-size: 2rem; letter-spacing: .16em; line-height: 1.5; margin-left: 6px; }
.core-overline, .core-subline { font: .8125rem/1.5 var(--mono); letter-spacing: .02em; text-align: center; max-width: 100%; }
.core-overline { color: var(--mint); }
.core-subline { margin-top: 4px; color: #c0d6d0; }
.core-orbit { position: absolute; width: 150px; height: 150px; border: 1px solid #ace5d211; border-radius: 50%; left: calc(50% - 75px); top: 37px; z-index: -1; }
.core-orbit::after { content: ""; position: absolute; inset: -17px; border: 1px dashed #ace5d218; border-radius: 50%; }
.visual-connections.lower { display: grid; gap: 8px; justify-items: center; height: 34px; padding-inline: 0; }
.capability-rail span { border-top: 1px solid #ace5d260; padding-top: 10px; color: var(--mint); font-family: var(--mono); }
.visual-footnote { font-size: .9375rem; line-height: 1.65; margin: 28px 0 0; color: #a9c3be; }
.visual-footnote strong { font-weight: 500; color: #e1eee8; }
.section-border { border-top: 1px solid var(--line); }
.mandate { padding-block: 76px; background: var(--surface); }
.split-heading { display: grid; grid-template-columns: 1fr 2fr; gap: 50px; }
.split-heading > .eyebrow { max-width: 200px; }
.split-heading > div > p { max-width: 680px; }
.section-lede { max-width: 680px; font-size: 1.1rem; line-height: 1.6; }
.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 38px; margin-top: 48px; }
.pillar-grid article { padding-top: 25px; border-top: 1px solid var(--strong-line); }
.small-number { display: block; font: .83rem var(--mono); color: var(--green); margin-bottom: 20px; }
.pillar-grid p { font-size: 1.0625rem; color: var(--muted); margin-bottom: 0; }
.mandate .open-foundation { margin-top: 32px; margin-bottom: 0; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); }
.assurance { padding-block: 86px; }
.section-heading { margin-bottom: 44px; }
.assurance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.assurance-grid p { color: var(--muted); font-size: 1.0625rem; margin-bottom: 0; }
.line-icon { display: flex; align-items: center; width: 34px; height: 35px; margin-bottom: 26px; font-size: 2rem; color: var(--green); font-weight: 300; }
.sectors { padding-block: 78px; }
.sector-tabs { display: flex; flex-wrap: wrap; gap: 0 25px; border-bottom: 1px solid var(--line); }
.sector-tabs button { border: 0; border-bottom: 2px solid transparent; background: transparent; padding: 15px 0; font-size: 1rem; color: var(--muted); }
.sector-tabs button[aria-selected="true"] { border-color: var(--green); color: var(--ink); font-weight: 600; }
.sector-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 76px; padding-top: 44px; }
.sector-panel h3 { font-size: 2.5rem; letter-spacing: -.05em; font-weight: 500; }
.sector-panel > div > p:last-child { color: var(--muted); font-size: 1.0625rem; max-width: 460px; }
.sector-scenario { padding: 28px 32px; background: var(--surface-raised); border-left: 2px solid var(--green); }
.scenario-label { font: .8125rem/1.6 var(--mono); letter-spacing: .04em; color: var(--green); }
.scenario-title { font-size: 1.2rem; font-weight: 500; margin-top: 12px; margin-bottom: 16px; }
.sector-scenario ol { padding-left: 22px; margin-block: 14px 24px; }
.sector-scenario li { padding-left: 6px; font-size: 1.0625rem; margin-bottom: 10px; }
.sector-scenario li::marker { font-family: var(--mono); color: var(--green); }
.scenario-outcome { display: block; font-size: 1rem; border-top: 1px solid var(--scenario-line); padding-top: 15px; color: var(--green); }
.exchange { background: var(--governed-surface); box-shadow: inset 0 1px var(--governed-edge), inset 0 -1px var(--governed-edge); color: #e7f0e8; padding-block: 76px; }
.exchange .eyebrow { color: var(--mint); }
.exchange-heading { display: grid; grid-template-columns: 1.6fr 1fr; gap: 80px; align-items: end; }
.exchange-heading > p { font-size: 1.0625rem; color: #b7ccc5; }
.exchange h2 { margin-bottom: 0; }
.exchange-flow { display: grid; grid-template-columns: 1fr auto 1.3fr auto 1fr; gap: 20px; align-items: center; padding-block: 44px; margin-top: 30px; }
.flow-label { font: .8125rem/1.5 var(--mono); color: var(--mint); letter-spacing: .02em; }
.exchange-flow h3 { font-size: 1.2rem; margin-top: 14px; }
.exchange-flow p { font-size: 1rem; color: #b7ccc5; margin: 0; }
.flow-arrow { color: #71a08d; font-size: 1.5rem; }
.exchange-grant { border: 1px solid #ace5d260; padding: 26px; background: #1a3a42; }
.exchange-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; padding-top: 25px; border-top: 1px solid #ace5d230; }
.exchange-notes p { font-size: 1rem; color: #b7ccc5; }
.exchange-notes strong { color: #e7f0e8; font-weight: 500; }
.light-link { color: var(--mint); }
.light-link:hover { color: white; }
.closing { padding-block: 94px; }
.closing h2 { max-width: 920px; }
.closing > p:not(.eyebrow) { max-width: 630px; color: var(--muted); font-size: 1.08rem; }
.site-footer { display: flex; align-items: center; gap: 36px; border-top: 1px solid var(--line); padding-block: 30px; }
.site-footer .brand { font-size: 1rem; }
.site-footer p { font-size: .875rem; line-height: 1.6; color: var(--muted); margin: 0 auto 0 0; }
.site-footer > a:last-child { font-size: .875rem; }

/* Technical reading surface: the same visual language, a more precise information density. */
.technical-hero { padding-block: 74px 48px; }
.technical-hero h1 { max-width: 950px; }
.technical-hero .hero-lede { max-width: 740px; }
.technical-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 26px; font: .8125rem/1.6 var(--mono); border-top: 1px solid var(--line); margin-top: 36px; padding-top: 22px; }
.technical-meta .text-link { margin-left: auto; }
.technical-layout { display: grid; grid-template-columns: 215px minmax(0, 1fr); gap: 64px; padding-bottom: 64px; }
.contents { padding-top: 36px; }
.contents nav { position: sticky; top: 30px; }
.contents nav .eyebrow { margin-bottom: 18px; color: var(--muted); }
.contents a { display: block; padding-block: 8px; font-size: .9375rem; text-decoration: none; overflow-wrap: anywhere; }
.contents-note { font-size: .875rem; color: var(--muted); margin-top: 34px; grid-column: 1 / -1; }
.tech-section { padding-block: 36px 48px; border-top: 1px solid var(--line); }
.tech-section h2 { font-size: clamp(1.85rem, 2.7vw, 2.7rem); }
.tech-section h3 { margin-top: 30px; font-size: 1.14rem; }
.tech-section > p, .tech-section dd { font-size: 1.0625rem; color: var(--body-ink); }
.tech-section > p { max-width: 76ch; }
.tech-section .eyebrow { font-size: .8125rem; color: var(--green); }
.system-boundary { margin-block: 32px; }
.system-responsibilities { display: grid; grid-template-columns: 1fr 1fr; }
.system-responsibilities article { padding: 28px; }
.application-responsibility { background: var(--surface-raised); }
.kernel-responsibility { background: var(--governed-surface); box-shadow: inset 0 0 0 1px var(--governed-edge); color: #e7f0e8; }
.system-responsibilities .system-label { font: .8125rem/1.6 var(--mono); color: var(--green); margin: 0; }
.kernel-responsibility .system-label { color: var(--mint); }
.system-responsibilities h3 { margin: 16px 0; font-size: 1.35rem; }
.system-responsibilities p:last-child { margin: 0; font-size: 1.0625rem; }
.system-exchanges { margin: 0; }
.system-exchanges > div { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.system-exchanges dt { font-size: 1rem; font-weight: 600; color: var(--green); }
.system-exchanges dd { margin: 0; }
.system-infrastructure { margin: 20px 0 0; font-size: 1rem; color: var(--muted); }
.system-infrastructure strong { display: block; color: var(--ink); margin-bottom: 6px; }
.technical-callout { border-left: 3px solid var(--green); background: var(--callout); padding: 24px 27px; margin-block: 28px; }
.technical-callout strong { font-size: 1.0625rem; display: block; margin-bottom: 10px; }
.technical-callout p { font-size: 1.0625rem; margin-bottom: 10px; }
.technical-callout p, .source-list p, .system-infrastructure, .adoption-routes p { max-width: 70ch; }
.adoption-routes p { font-size: 1.0625rem; color: var(--body-ink); }
.technical-callout p:last-child { margin-bottom: 0; }
.technical-callout.subtle { background: transparent; }
.technical-callout.warning { border-color: var(--focus); background: var(--warning); }
.numbered-steps { list-style: none; counter-reset: steps; padding: 0; margin-block: 26px; }
.numbered-steps li { counter-increment: steps; display: grid; grid-template-columns: 24px 80px 1fr; gap: 15px; border-top: 1px solid var(--line); padding-block: 20px; font-size: 1.0625rem; }
.numbered-steps li::before { content: "0" counter(steps); font: .8125rem/1.8 var(--mono); color: var(--green); }
.numbered-steps strong { font-weight: 600; }
.commit-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-block: 28px; border-block: 1px solid var(--line); padding: 18px 0; list-style: none; }
.commit-flow li { padding: 0 12px; border-right: 1px solid var(--line); font-size: 1rem; font-weight: 600; }
.commit-flow li:first-child { padding-left: 0; }
.commit-flow li:last-child { border: 0; }
.commit-flow small { display: inline-block; color: var(--muted); font-size: .9375rem; font-weight: 400; line-height: 1.5; margin-top: 5px; }
.two-column-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.two-column-notes p { font-size: 1.0625rem; color: var(--body-ink); }
.responsibility-list { margin-block: 30px; }
.responsibility-list > div { display: grid; grid-template-columns: 180px 1fr; gap: 30px; padding-block: 22px; border-top: 1px solid var(--line); }
.responsibility-list dt { font-size: 1.0625rem; font-weight: 600; line-height: 1.5; }
.responsibility-list dd { margin: 0; font-size: 1.0625rem; }
.operating-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 35px; }
.operating-grid article { border-top: 1px solid var(--line); margin-top: 20px; }
.operating-grid p { font-size: 1.0625rem; color: var(--body-ink); }
.source-list { list-style: none; padding: 0; }
.source-list li { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 20px; }
.source-list a { font-size: 1.0625rem; font-weight: 550; }
.source-list p { font-size: 1.0625rem; color: var(--muted); margin-top: 8px; }

@media screen and (min-width: 1600px) {
  .site-header { padding-inline: max(56px, calc((100vw - 1240px) / 2)); }
}
@media screen and (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .site-header { padding-inline: 32px; }
  .brand-descriptor { display: none; }
  .hero { gap: 35px; }
  .kernel-visual { padding: 22px; }
  .assurance-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .sector-panel { gap: 40px; }
  .exchange-heading { gap: 40px; }
  .exchange-flow { gap: 12px; }
  .exchange-grant { padding: 20px; }
  .technical-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 32px; }
  .system-responsibilities { grid-template-columns: 1fr; }
}
@media screen and (max-width: 800px) {
  .site-header { flex-wrap: wrap; gap: 14px 14px; min-height: 86px; }
  .site-header nav { gap: 24px; }
  .hero { grid-template-columns: 1fr; padding-top: 46px; gap: 40px; }
  .hero-copy { max-width: 620px; }
  h1 { font-size: clamp(3.3rem, 9vw, 5rem); }
  .kernel-visual { min-height: 0; padding: 28px; }
  .visual-topline { margin-bottom: 25px; }
  .split-heading { grid-template-columns: 1fr; gap: 10px; }
  .split-heading > .eyebrow { max-width: none; }
  .pillar-grid { gap: 24px; }
  .pillar-grid h3 { font-size: 1.14rem; }
  .exchange-heading { grid-template-columns: 1fr; gap: 25px; }
  .exchange-heading > p { max-width: 490px; }
  .exchange-flow { grid-template-columns: 1fr; gap: 18px; padding-top: 0; }
  .flow-arrow { transform: rotate(90deg); width: fit-content; margin-left: 20px; line-height: 1; }
  .exchange-grant { max-width: 100%; }
  .exchange-notes { gap: 30px; }
  .technical-layout { grid-template-columns: 1fr; gap: 26px; }
  .contents { padding-top: 0; }
  .contents nav { position: static; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 30px; }
  .contents .eyebrow { grid-column: 1 / -1; }
  .contents-note { max-width: none; margin-top: 15px; }
  .technical-meta .text-link { margin-left: 0; }
  .site-footer { flex-wrap: wrap; gap: 20px; }
}
@media screen and (max-width: 540px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { padding: 20px; }
  .site-header nav { justify-content: space-between; gap: 8px 18px; width: 100%; font-size: .875rem; }
  .nav-technical span { margin-left: 0; }
  .brand { font-size: 1.25rem; }
  .brand img { width: 27px; height: 31px; }
  h1 { font-size: clamp(2.7rem, 10.9vw, 3.8rem); }
  h2 { font-size: 2.25rem; }
  .hero, .mandate, .assurance, .sectors, .exchange, .closing { padding-block: 48px; }
  .hero { padding-top: 37px; }
  .hero .eyebrow { margin-bottom: 26px; }
  .hero-lede { font-size: 1.12rem; }
  .actions { gap: 18px; }
  .kernel-visual { padding: 23px 18px; }
  .application-rail { gap: 6px; }
  .hero-signature { gap: 10px 13px; margin-top: 29px; }
  .pillar-grid { grid-template-columns: 1fr; margin-top: 24px; }
  .pillar-grid h3 { font-size: 1.3rem; }
  .small-number { margin-bottom: 10px; }
  .assurance-grid { grid-template-columns: 1fr; gap: 30px; }
  .assurance-grid article { border-top: 1px solid var(--line); padding-top: 20px; }
  .line-icon { margin-bottom: 15px; }
  .sector-tabs { gap: 0 19px; }
  .sector-tabs button { padding-block: 12px; }
  .sector-panel { grid-template-columns: 1fr; gap: 15px; padding-top: 30px; }
  .sector-panel h3 { font-size: 2.25rem; }
  .sector-scenario { padding: 24px; }
  .exchange-notes { grid-template-columns: 1fr; gap: 5px; }
  .site-footer { align-items: flex-start; }
  .site-footer p { flex-basis: 100%; order: 3; }
  .site-footer > a:last-child { margin-left: auto; }
  .technical-hero { padding-block: 40px 30px; }
  .technical-hero .hero-lede { font-size: 1.08rem; }
  .tech-section { padding-block: 28px 30px; }
  .tech-section h2 { font-size: 1.85rem; }
  .system-responsibilities article { padding: 24px; }
  .system-exchanges > div { grid-template-columns: 1fr; gap: 8px; }
  .numbered-steps li { grid-template-columns: 20px 1fr; gap: 8px 12px; }
  .numbered-steps li span { grid-column: 2; }
  .commit-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 0; }
  .commit-flow li:nth-child(3) { padding-left: 0; }
  .commit-flow li:nth-child(2) { border: 0; }
  .two-column-notes, .operating-grid { grid-template-columns: 1fr; gap: 0; }
  .responsibility-list > div { grid-template-columns: 1fr; gap: 8px; }
  .technical-callout { padding: 20px; }
}
@media screen and (max-height: 50em) {
  .contents nav { position: static; }
}
@media screen and (max-width: 20em) {
  .contents nav { grid-template-columns: 1fr; }
}
@media screen and (max-width: 20em) {
  .commit-flow { grid-template-columns: 1fr; }
  .commit-flow li { border-right: 0; padding: 0; }
  .commit-flow li + li { border-top: 1px solid var(--line); padding-top: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
@media print {
  @page { size: A4; margin: 15mm; }
  :root, :root[data-theme] {
    color-scheme: light;
    font-size: 10pt;
    --paper: #fff;
    --ink: #102c36;
    --muted: #53666a;
    --green: #245d4d;
    --line: #cdd4cd;
    --body-ink: #3a545b;
    --surface: #eeeee5;
    --surface-raised: #e8ece3;
    --governed-surface: var(--navy);
    --governed-edge: transparent;
    --callout: #e6ebe2;
    --warning: #ede9dd;
    --focus: #997121;
    --strong-line: #aebcb2;
    --scenario-line: #bacabc;
  }
  html { scroll-behavior: auto; }
  .wrap { width: 100%; }
  .site-header { min-height: 0; padding: 0 0 16px; }
  .site-header nav, .theme-control, .skip-link, .actions, .print-control, .sector-tabs, .contents, .technical-meta .text-link { display: none !important; }
  .hero { padding-block: 28px; gap: 30px; grid-template-columns: 1.2fr 1fr; }
  h1, .technical-hero h1 { font-size: 32pt; }
  h2, .tech-section h2 { font-size: 23pt; }
  .eyebrow, h1, h2, h3 { break-inside: avoid; break-after: avoid; }
  .split-heading > .eyebrow { break-after: auto; }
  .institutional-proposition { break-inside: avoid; }
  .institutional-proposition h2 { font-size: 10.625pt; }
  .exchange .text-link { display: none; }
  .hero-signature { margin-top: 18px; }
  .kernel-visual { min-height: 0; padding: 18px; }
  .visual-topline { margin-bottom: 18px; }
  .visual-topline, .visual-tag, .application-rail, .capability-rail, .core-overline, .core-subline { font-size: 8pt; }
  .kernel-core { padding-block: 15px; }
  .mandate, .assurance, .sectors, .exchange, .closing { padding-block: 28px; }
  .section-heading { margin-bottom: 20px; }
  .pillar-grid { margin-top: 20px; }
  .assurance-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .assurance-grid article { break-inside: avoid; }
  [data-sector-panel][hidden] { display: grid !important; }
  .sector-panel { grid-template-columns: 1fr 1fr; gap: 24px; padding-block: 20px; break-inside: avoid; }
  .sector-panel h3 { font-size: 22pt; }
  .sector-panel .eyebrow { margin-bottom: 12px; }
  .sector-scenario { padding: 18px; }
  .exchange-heading { gap: 25px; }
  .exchange-flow { gap: 12px; padding-block: 25px; }
  .exchange-notes { gap: 24px; }
  .exchange-grant { padding: 15px; }
  .exchange > .wrap { padding-inline: 5mm; }
  .kernel-visual, .kernel-responsibility, .exchange, .sector-scenario, .technical-callout { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .technical-hero { padding-block: 28px; }
  .technical-layout { display: block; padding-bottom: 0; }
  .tech-section { padding-block: 25px; }
  .tech-section:last-child { padding-bottom: 0; }
  .tech-section .eyebrow { margin-bottom: 12px; }
  .source-list li { padding-top: 12px; margin-top: 12px; }
  .technical-meta { margin-top: 22px; }
  .system-responsibilities, .system-exchanges > div, .technical-callout, .commit-flow, .operating-grid article, .source-list li, .responsibility-list > div, .pillar-grid article { break-inside: avoid; }
  .system-responsibilities { grid-template-columns: 1fr 1fr; }
  .technical-callout { margin-block: 20px; }
  .site-footer { margin-top: 25px; padding-block: 18px; }
  .technical-page .site-footer { margin-top: 12px; }
  .site-footer > a:last-child { display: none; }
  .tech-section > .button { display: none; }
}