:root {
  --ink: #16221d; --ink-soft: #52615a; --paper: #f3f1e9; --paper-deep: #e7e3d7;
  --line: #c9c9be; --moss: #365b46; --moss-dark: #1c382c; --lichen: #b8c58f;
  --ochre: #c88a4a; --clay: #a8563a; --night: #17231e;
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Manrope", system-ui, sans-serif; --serif: Georgia, "Times New Roman", serif;
  --shell: min(1180px, calc(100% - 48px)); --reading: 710px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 68px; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--ochre); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 2000; top: 12px; left: 12px; transform: translateY(-180%); padding: 10px 14px; color: var(--ink); background: #fff; }
.skip-link:focus { transform: translateY(0); }
.page-shell { width: var(--shell); margin-inline: auto; }
h1, h2, p, figure, blockquote { margin-top: 0; }
h1, h2 { text-wrap: balance; }

.opening, .dark-chapter, .future-chapter, .closing {
  color: var(--paper); background-color: var(--night);
  background-image: linear-gradient(rgba(243,241,233,.025) 1px,transparent 1px), linear-gradient(90deg,rgba(243,241,233,.025) 1px,transparent 1px);
  background-size: 42px 42px;
}
.opening-grid { min-height: 900px; display: grid; grid-template-columns: minmax(0,1.45fr) minmax(280px,.55fr); align-items: end; gap: clamp(56px,9vw,132px); padding-block: clamp(90px,11vw,144px); }
h1 { margin-bottom: clamp(78px,11vw,144px); font-family: var(--serif); font-size: clamp(68px,10vw,132px); font-weight: 400; line-height: .88; letter-spacing: -.06em; }
.opening h2, .chapter h2, .closing h2 { margin-bottom: 30px; font-family: var(--serif); font-size: clamp(40px,5vw,66px); font-weight: 400; line-height: 1.04; letter-spacing: -.04em; }
.opening h2 { max-width: 720px; }
.chapter-label, .diagram-label, .regional-context figcaption, .architecture-diagram figcaption, .conditional-note span { font: 500 10px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.chapter-label { margin-bottom: 19px; color: var(--clay); }
.chapter-label-light { color: var(--lichen); }
.prose { max-width: var(--reading); color: var(--ink-soft); font-size: 17px; line-height: 1.78; }
.prose p { margin-bottom: 1.15em; }
.prose p:last-child { margin-bottom: 0; }
.prose-light { color: #c6cec9; }

.thought-trace { align-self: end; margin: 0 0 6px; padding-left: 24px; border-left: 1px solid rgba(184,197,143,.52); }
.diagram-label { margin-bottom: 23px; color: var(--lichen); }
.thought-trace ol, .question-sequence, .architecture-diagram ol, .architecture-diagram ul, .integrity-rules { margin: 0; padding: 0; list-style: none; }
.thought-trace li { position: relative; min-height: 52px; display: grid; grid-template-columns: 30px 1fr; align-items: start; gap: 11px; color: #d6ddd8; font-family: var(--serif); font-size: 17px; line-height: 1.3; }
.thought-trace li:not(:last-child)::after { position: absolute; bottom: 8px; left: 8px; width: 1px; height: 18px; content: ""; background: rgba(184,197,143,.45); }
.thought-trace li span { color: var(--lichen); font: 10px/1.6 var(--mono); }

.chapter-nav { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid var(--line); background: rgba(243,241,233,.96); backdrop-filter: blur(9px); }
.chapter-nav .page-shell { display: flex; gap: 25px; overflow-x: auto; padding-block: 15px; scrollbar-width: thin; }
.chapter-nav a { flex: 0 0 auto; color: var(--ink-soft); font: 500 10px/1.4 var(--mono); letter-spacing: .06em; text-decoration: none; text-transform: uppercase; }
.chapter-nav a:hover, .chapter-nav a:focus-visible, .chapter-nav a[aria-current="true"] { color: var(--moss); text-decoration: underline; text-underline-offset: 5px; }

.chapter { padding-block: clamp(86px,11vw,144px); }
.chapter-grid { display: grid; grid-template-columns: minmax(210px,.42fr) minmax(0,1fr); gap: clamp(48px,9vw,130px); }
.chapter-heading h2 { position: sticky; top: 92px; max-width: 440px; }
.institution-chapter, .integrity-chapter { background: var(--paper-deep); }

.regional-context { position: relative; max-width: 760px; min-height: 290px; margin: 65px 0 0; padding: 25px; overflow: hidden; border: 1px solid var(--line); background: rgba(243,241,233,.58); }
.regional-context figcaption, .architecture-diagram figcaption { color: var(--moss); }
.regional-context svg { position: absolute; inset: 64px 22px 48px; width: calc(100% - 44px); height: 170px; }
.regional-context .contour { fill: none; stroke: #b8bcb2; stroke-width: 1; }
.regional-context .route { fill: none; stroke: var(--ochre); stroke-dasharray: 5 7; stroke-width: 1.5; }
.institution-node { position: absolute; z-index: 2; display: grid; min-width: 110px; padding: 13px 15px; border: 1px solid var(--moss); color: var(--paper); background: var(--moss-dark); }
.institution-node strong { font-family: var(--serif); font-size: 23px; font-weight: 400; }
.institution-node span { color: var(--lichen); font: 9px var(--mono); text-transform: uppercase; }
.institution-node-cmc { top: 105px; left: 12%; }
.institution-node-cncc { right: 10%; bottom: 66px; }
.regional-context > p { position: absolute; right: 25px; bottom: 17px; margin: 0; color: var(--ink-soft); font: 10px var(--mono); }

.dark-chapter .chapter-heading h2, .future-chapter .chapter-heading h2 { color: var(--paper); }
.question-sequence { max-width: 760px; display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); margin-top: 64px; border-top: 1px solid rgba(243,241,233,.2); border-left: 1px solid rgba(243,241,233,.2); }
.question-sequence li { position: relative; min-height: 172px; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; padding: 18px 15px; border-right: 1px solid rgba(243,241,233,.2); border-bottom: 1px solid rgba(243,241,233,.2); }
.question-sequence li:not(:last-child)::after { position: absolute; z-index: 2; top: 50%; right: -10px; display: grid; width: 19px; height: 19px; place-items: center; transform: translateY(-50%); border: 1px solid #68746d; border-radius: 50%; content: "→"; color: var(--lichen); background: var(--night); font-size: 11px; }
.question-sequence span { color: #aeb9b1; font: 9px/1.45 var(--mono); text-transform: uppercase; }
.question-sequence strong { color: var(--paper); font-family: var(--serif); font-size: 18px; font-weight: 400; }

.infrastructure-chapter { background: linear-gradient(rgba(54,91,70,.035) 1px,transparent 1px), linear-gradient(90deg,rgba(54,91,70,.035) 1px,transparent 1px), var(--paper); background-size: 42px 42px; }
.architecture-diagram { max-width: 760px; margin-top: 64px; padding: 27px; border: 1px solid var(--line); background: var(--paper-deep); }
.architecture-diagram ol { display: grid; margin-top: 24px; }
.architecture-diagram ol li { position: relative; display: grid; grid-template-columns: minmax(125px,.34fr) 1fr; align-items: center; gap: 22px; min-height: 70px; padding: 15px 18px; border: 1px solid var(--line); background: var(--paper); }
.architecture-diagram ol li + li { margin-top: 25px; }
.architecture-diagram ol li + li::before { position: absolute; top: -26px; left: 50%; content: "↓"; color: var(--moss); font: 17px var(--mono); }
.architecture-diagram ol span { color: var(--ink-soft); font: 9px var(--mono); text-transform: uppercase; }
.architecture-diagram ol strong { font-family: var(--serif); font-size: 22px; font-weight: 400; }
.architecture-diagram ul { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); margin-top: 18px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.architecture-diagram ul li { padding: 12px 7px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--moss); font: 9px var(--mono); text-align: center; text-transform: uppercase; }

.integrity-rules { max-width: 760px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin-top: 60px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.integrity-rules li { min-height: 142px; display: flex; flex-direction: column; justify-content: space-between; gap: 24px; padding: 21px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(243,241,233,.52); }
.integrity-rules li:last-child { grid-column: 1 / -1; }
.integrity-rules span { color: var(--clay); font: 10px var(--mono); }
.integrity-rules strong { font-family: var(--serif); font-size: 23px; font-weight: 400; }

.future-chapter { background-color: var(--moss-dark); }
.conditional-note { max-width: 760px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 13px 22px; margin: 58px 0 0; padding: 24px; border: 1px solid rgba(184,197,143,.38); }
.conditional-note span { color: var(--lichen); }
.conditional-note strong { color: var(--paper); font-family: var(--serif); font-size: 21px; font-weight: 400; }
.conditional-note i { grid-row: 1 / 3; grid-column: 2; max-width: 100px; color: #aeb9b1; font: 9px/1.5 var(--mono); text-align: center; }

.closing { padding-block: clamp(100px,14vw,188px); border-top: 1px solid rgba(243,241,233,.14); }
.closing-inner { max-width: 940px; }
.closing .prose { max-width: 720px; }
.closing blockquote { max-width: 920px; margin: 56px 0; padding-left: clamp(24px,5vw,56px); border-left: 2px solid var(--lichen); color: var(--paper); font-family: var(--serif); font-size: clamp(34px,5.2vw,64px); line-height: 1.15; letter-spacing: -.035em; }
.quiet-link { display: inline-flex; gap: 20px; margin-top: 52px; padding-bottom: 6px; border-bottom: 1px solid rgba(184,197,143,.65); color: var(--lichen); font-size: 13px; font-weight: 600; text-decoration: none; }
.quiet-link:hover { color: var(--paper); border-color: var(--paper); }

@media (max-width: 900px) {
  .opening-grid { min-height: 0; grid-template-columns: 1fr; align-items: start; padding-block: 88px; }
  h1 { margin-bottom: 90px; }
  .thought-trace { max-width: 540px; margin-top: 12px; }
  .chapter-grid { grid-template-columns: 1fr; gap: 24px; }
  .chapter-heading { max-width: 720px; }
  .chapter-heading h2 { position: static; }
  .chapter-heading .chapter-label { margin-bottom: 14px; }
  .question-sequence { grid-template-columns: 1fr; }
  .question-sequence li { min-height: 104px; }
  .question-sequence li:not(:last-child)::after { top: auto; right: auto; bottom: -10px; left: 50%; transform: translateX(-50%) rotate(90deg); }
}
@media (max-width: 620px) {
  :root { --shell: min(100% - 30px,1180px); }
  html { scroll-padding-top: 55px; }
  .opening-grid { padding-block: 68px 78px; }
  h1 { margin-bottom: 72px; font-size: clamp(62px,22vw,92px); }
  .opening h2, .chapter h2, .closing h2 { font-size: clamp(38px,12vw,52px); }
  .prose { font-size: 16px; line-height: 1.74; }
  .chapter { padding-block: 76px; }
  .chapter-nav .page-shell { gap: 20px; padding-block: 13px; }
  .thought-trace { padding-left: 18px; }
  .regional-context { min-height: 280px; padding: 20px; }
  .institution-node { min-width: 94px; }
  .institution-node-cmc { left: 8%; }
  .institution-node-cncc { right: 7%; }
  .regional-context > p { right: 18px; left: 18px; font-size: 8px; text-align: right; }
  .architecture-diagram { padding: 18px; }
  .architecture-diagram ol li { grid-template-columns: 1fr; gap: 5px; }
  .architecture-diagram ul { grid-template-columns: repeat(5,minmax(0,1fr)); overflow-x: auto; }
  .integrity-rules { grid-template-columns: 1fr; }
  .integrity-rules li:last-child { grid-column: auto; }
  .conditional-note { grid-template-columns: 1fr; }
  .conditional-note i { grid-row: auto; grid-column: auto; max-width: none; padding: 12px 0; border-top: 1px solid rgba(184,197,143,.35); border-bottom: 1px solid rgba(184,197,143,.35); }
  .closing { padding-block: 100px; }
  .closing blockquote { margin-block: 46px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }