:root {
  --paper: #f3f1e9;
  --paper-bright: #fbfaf6;
  --ink: #07182f;
  --ink-soft: #132947;
  --blue: #1f58df;
  --blue-bright: #78a7ff;
  --blue-pale: #dce8ff;
  --rule: #bcc7d4;
  --muted: #596777;
  --white: #ffffff;
  --serif: Georgia, "Times New Roman", Times, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page: min(100% - 48px, 1440px);
  --content: min(100% - 48px, 1200px);
}
* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: .2em; }
svg { display: block; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 12px 16px; background: var(--white); color: var(--ink); transform: translateY(-140%); box-shadow: 0 0 0 3px var(--blue); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--blue-bright); outline-offset: 4px; }
.site-header { width: var(--page); min-height: 104px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 32px; background: var(--paper); }
.brand { display: inline-flex; align-items: center; gap: 14px; min-height: 48px; text-decoration: none; line-height: 1.1; letter-spacing: -.02em; }
.brand-mark { width: 58px; flex: 0 0 auto; fill: none; stroke: var(--blue); stroke-width: 2.25; vector-effect: non-scaling-stroke; }
.brand span { display: grid; gap: 3px; font-size: 13px; }
.brand b:first-child { font-weight: 500; }
.brand b:last-child { font-weight: 750; }
.primary-nav { display: flex; align-items: stretch; gap: 6px; font-size: 12px; font-weight: 700; letter-spacing: .04em; }
.primary-nav a { display: grid; place-items: center; min-height: 48px; padding: 0 12px; text-decoration: none; border-bottom: 2px solid transparent; transition: color .15s ease, border-color .15s ease; }
.primary-nav a:hover { color: var(--blue); }
.primary-nav a[aria-current="page"] { color: var(--blue); border-color: var(--blue); }
.hero { position: relative; min-height: 700px; overflow: hidden; display: grid; align-items: center; background: var(--ink); color: var(--white); isolation: isolate; }
.hero--interior { min-height: 560px; }
.hero-grid { position: absolute; inset: 0; z-index: -2; opacity: .34; background-image: linear-gradient(rgba(120,167,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(120,167,255,.12) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent); }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(7,24,47,.96) 0%, rgba(7,24,47,.82) 56%, rgba(7,24,47,.42) 100%); }
.hero-trace { position: absolute; width: 100%; inset: auto 0 10%; opacity: .7; }
.hero-trace svg { width: 100%; height: 360px; }
.hero-trace path { fill: none; stroke: var(--blue); stroke-width: 3; vector-effect: non-scaling-stroke; }
.hero-content { width: var(--content); margin: auto; padding: 80px 0 96px; }
.hero-eyebrow, .kicker { margin: 0 0 24px; color: var(--blue); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.hero-eyebrow { color: var(--blue-bright); }
.hero h1 { max-width: 1060px; margin: 0; font-family: var(--serif); font-size: clamp(52px, 7vw, 112px); font-weight: 400; line-height: .96; letter-spacing: -.05em; text-wrap: balance; }
.hero--interior h1 { max-width: 980px; font-size: clamp(52px, 6vw, 92px); }
.hero-deck { max-width: 700px; margin: 36px 0 0; color: #dbe5f4; font-size: clamp(18px, 2vw, 24px); line-height: 1.5; }
.hero-tagline { margin: 48px 0 0; font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.hero-coordinate { position: absolute; right: max(24px, calc((100% - min(100% - 48px, 1440px)) / 2)); bottom: 28px; color: var(--blue-bright); font-family: var(--mono); font-size: 10px; line-height: 1.6; letter-spacing: .1em; text-align: right; text-transform: uppercase; }
.section { position: relative; padding: 120px 0; border-top: 1px solid var(--rule); }
.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: var(--white); border-color: var(--ink-soft); }
.section--blueprint { background-color: var(--paper-bright); background-image: linear-gradient(rgba(31,88,223,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(31,88,223,.055) 1px, transparent 1px); background-size: 32px 32px; }
.section-index { position: absolute; top: 28px; left: max(24px, calc((100% - min(100% - 48px, 1440px)) / 2)); color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.section--ink .section-index { color: var(--blue-bright); opacity: .7; }
.section-content { width: var(--content); margin: auto; }
.split-wide { display: grid; grid-template-columns: minmax(240px, .78fr) minmax(320px, 1.22fr); gap: clamp(64px, 9vw, 160px); align-items: start; }
h2, h3, p { text-wrap: pretty; }
h2 { margin: 0; max-width: 820px; font-family: var(--serif); font-size: clamp(40px, 5vw, 72px); font-weight: 400; line-height: 1.04; letter-spacing: -.04em; }
h3 { margin: 0; font-size: 20px; line-height: 1.3; letter-spacing: -.02em; }
.prose { max-width: 760px; }
.prose > :first-child { margin-top: 0; }
.prose > :last-child { margin-bottom: 0; }
.prose p { margin: 0 0 24px; color: var(--ink-soft); }
.prose--large { font-size: clamp(18px, 1.8vw, 23px); line-height: 1.65; }
.prose--inverse p { color: #d7e1ef; }
.lede { max-width: 620px; margin: 28px 0 36px; color: #d7e1ef; font-size: 21px; }
.kicker--blue { color: var(--blue-bright); }
.text-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 8px; color: var(--blue); font-size: 14px; font-weight: 750; text-decoration-thickness: 1px; }
.text-link span { margin-left: 8px; transition: transform .15s ease; }
.text-link:hover span { transform: translateX(4px); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 11px 20px; background: var(--blue); color: var(--white); border: 1px solid var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .03em; text-decoration: none; transition: background .15s ease, color .15s ease; }
.button:hover { background: var(--ink); }
.button--light { background: var(--white); color: var(--ink); border-color: var(--white); }
.button--light:hover { background: var(--blue-bright); border-color: var(--blue-bright); color: var(--ink); }
.initiative-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(48px, 8vw, 120px); align-items: center; }
.continuity-diagram { margin: 0; }
.continuity-diagram svg { width: 100%; border: 1px solid rgba(120,167,255,.35); }
.diagram-grid { fill: none; stroke: rgba(120,167,255,.18); stroke-width: 1; }
.diagram-threshold { stroke: var(--white); stroke-width: 1; stroke-dasharray: 4 5; opacity: .65; }
.diagram-primary, .diagram-secondary { fill: none; stroke: var(--blue-bright); stroke-width: 2.5; }
.diagram-secondary { stroke-dasharray: 4 5; opacity: .7; }
.continuity-diagram text { fill: #a8bee0; font-family: var(--mono); font-size: 9px; letter-spacing: .04em; }
.continuity-diagram figcaption { margin-top: 16px; color: #b7c7db; font-size: 12px; }
.measure-heading { display: grid; grid-template-columns: .72fr 1.28fr; gap: 48px; margin-bottom: 72px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--rule); }
.principle { padding: 32px 32px 16px 0; border-right: 1px solid var(--rule); }
.principle + .principle { padding-left: 32px; }
.principle:last-child { border-right: 0; }
.principle h3::before { display: block; content: ""; width: 32px; height: 3px; margin-bottom: 24px; background: var(--blue); }
.principle p { margin: 14px 0 0; color: var(--muted); }
.comparison-table { display: grid; grid-template-columns: 1fr 1fr; margin-top: 64px; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.comparison-table article { min-height: 210px; padding: 32px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: rgba(251,250,246,.74); }
.comparison-table h3 { color: var(--blue); font-family: var(--mono); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.comparison-table p { margin: 24px 0 0; font-family: var(--serif); font-size: 22px; line-height: 1.5; }
.method-list, .criteria-list { list-style: none; margin: 64px 0 0; padding: 0; border-top: 1px solid var(--rule); }
.method-list li { display: grid; grid-template-columns: .55fr 1.45fr; gap: 32px; padding: 32px 0; border-bottom: 1px solid var(--rule); }
.method-label { color: var(--blue); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.method-list p { max-width: 700px; margin: 8px 0 0; color: var(--muted); }
.notice { margin-top: 48px; padding: 20px 24px; border-left: 4px solid var(--blue); background: var(--blue-pale); color: var(--ink-soft); }
.notice strong { color: var(--ink); }
.workstreams, .contribution-paths { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 64px; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.workstreams article, .contribution-paths article { min-height: 260px; padding: 32px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: rgba(251,250,246,.78); }
.workstreams article > span { color: var(--blue); font-family: var(--mono); font-size: 11px; font-weight: 700; }
.workstreams h3, .contribution-paths h3 { margin-top: 32px; font-family: var(--serif); font-size: 30px; font-weight: 400; }
.workstreams p, .contribution-paths p { color: var(--muted); }
.sequence { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 64px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.sequence div { min-height: 176px; padding: 24px 16px; border-right: 1px solid var(--rule); }
.sequence div:last-child { border: 0; }
.sequence b { display: block; color: var(--blue); font-family: var(--mono); font-size: 12px; }
.sequence span { display: block; margin-top: 48px; font-size: 14px; font-weight: 700; line-height: 1.35; }
.criteria-list { counter-reset: criteria; }
.criteria-list li { counter-increment: criteria; display: grid; grid-template-columns: 48px .65fr 1.35fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.criteria-list li::before { content: "0" counter(criteria); color: var(--blue); font-family: var(--mono); font-size: 11px; }
.criteria-list span { color: var(--muted); }
.contribution-paths .text-link { margin-top: 16px; }
.legal-copy .section-content > h2:not(:first-child) { margin-top: 64px; }
.legal-copy h2 { font-size: 38px; }
.closing-statement { padding: 96px max(24px, calc((100% - min(100% - 48px, 1200px)) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 64px; background: var(--blue); color: var(--white); }
.closing-statement p { max-width: 880px; margin: 0; font-family: var(--serif); font-size: clamp(28px, 3.5vw, 50px); line-height: 1.2; letter-spacing: -.03em; }
.site-footer { padding: 72px max(24px, calc((100% - min(100% - 48px, 1440px)) / 2)) 48px; background: var(--ink); color: var(--white); }
.footer-statement { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 32px; padding-bottom: 64px; border-bottom: 1px solid rgba(255,255,255,.2); }
.footer-statement p { margin: 0; font-family: var(--serif); font-size: clamp(30px, 4vw, 56px); }
.footer-wave { height: 32px; background: url("/assets/waveform-line.svg") center / contain no-repeat; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .6fr; gap: 64px; padding-top: 48px; font-size: 13px; }
.footer-grid p { max-width: 310px; color: #aebdd1; }
.footer-grid nav { display: grid; gap: 10px; }
.footer-grid a { min-height: 28px; }
.footer-source { display: grid; align-content: start; gap: 12px; }
.footer-source span:first-child { color: #aebdd1; font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.error-page { background: var(--ink); color: var(--white); }
.error-page .site-header { background: var(--ink); }
.error-main { min-height: calc(100vh - 104px); width: var(--content); margin: auto; padding: 80px 0; display: grid; grid-template-columns: .65fr 1.35fr; gap: 64px; align-items: center; }
.error-code { color: var(--blue); font-family: var(--serif); font-size: clamp(120px, 24vw, 360px); line-height: .8; }
.error-main h1 { max-width: 650px; margin: 0; font-family: var(--serif); font-size: clamp(48px, 7vw, 96px); font-weight: 400; line-height: 1; letter-spacing: -.05em; }
.error-main p:not(.hero-eyebrow) { margin: 28px 0; color: #c2d0e1; font-size: 20px; }

@media (max-width: 980px) {
  .site-header { padding: 20px 0; align-items: flex-start; flex-direction: column; gap: 12px; }
  .primary-nav { width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .primary-nav a { flex: 0 0 auto; padding: 0 10px; }
  .hero { min-height: 620px; }
  .hero--interior { min-height: 500px; }
  .split-wide, .initiative-layout { grid-template-columns: 1fr; gap: 48px; }
  .measure-heading { grid-template-columns: 1fr; gap: 16px; }
  .sequence { grid-template-columns: 1fr; }
  .sequence div { display: grid; grid-template-columns: 48px 1fr; align-items: center; min-height: 80px; border-right: 0; border-bottom: 1px solid var(--rule); }
  .sequence span { margin: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  :root { --page: calc(100% - 32px); --content: calc(100% - 32px); }
  .brand-mark { width: 48px; }
  .brand span { font-size: 11px; }
  .primary-nav { gap: 0; font-size: 10px; margin-left: -8px; width: calc(100% + 16px); }
  .hero, .hero--interior { min-height: 540px; }
  .hero-content { padding: 64px 0 96px; }
  .hero h1, .hero--interior h1 { font-size: clamp(42px, 14vw, 62px); line-height: .98; }
  .hero-deck { margin-top: 28px; font-size: 17px; }
  .hero-tagline { font-size: 10px; line-height: 1.6; }
  .hero-coordinate { display: none; }
  .hero-trace { opacity: .45; }
  .section { padding: 88px 0 72px; }
  .section-index { top: 20px; left: 16px; }
  h2 { font-size: 40px; }
  .prose--large { font-size: 18px; }
  .principles, .comparison-table, .workstreams, .contribution-paths { grid-template-columns: 1fr; }
  .principle { padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--rule); }
  .principle + .principle { padding-left: 0; }
  .comparison-table article, .workstreams article, .contribution-paths article { min-height: 0; padding: 24px; }
  .method-list li { grid-template-columns: 1fr; gap: 12px; }
  .criteria-list li { grid-template-columns: 32px 1fr; gap: 12px; }
  .criteria-list span { grid-column: 2; }
  .closing-statement { padding: 72px 16px; align-items: flex-start; flex-direction: column; gap: 32px; }
  .footer-statement { grid-template-columns: 1fr; }
  .footer-wave { width: 160px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .error-main { grid-template-columns: 1fr; gap: 24px; }
  .error-code { font-size: 112px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}
@media print {
  .site-header, .site-footer, .closing-statement { display: none; }
  .hero { min-height: auto; color: var(--ink); background: var(--white); }
  .hero::after, .hero-grid, .hero-trace { display: none; }
  .hero-eyebrow, .hero-deck { color: var(--ink); }
  .section { break-inside: avoid; padding: 40px 0; }
}