:root {
  --blue: #075f91;
  --blue-deep: #054f79;
  --blue-dark: #073e5e;
  --blue-black: #102f40;
  --cyan: #72bdc8;
  --cyan-soft: #b9dce0;
  --cream: #f0eadc;
  --paper: #f6f2e9;
  --white: #fffdf8;
  --ink: #162f3c;
  --muted: #647075;
  --green: #3e876f;
  --gold: #b18338;
  --rule: rgba(16, 45, 59, 0.19);
  --display: "Bodoni 72", Didot, "Iowan Old Style", Baskerville, Georgia, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: Baskerville, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --page: min(1440px, calc(100vw - 72px));
  --reading: 720px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

body.menu-open .site-header {
  color: var(--cream);
  background: var(--blue-dark);
  border-color: rgba(244, 237, 219, 0.25);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img,
svg {
  display: block;
  max-width: 100%;
}

p,
h1,
h2,
h3,
h4,
figure,
blockquote,
dl,
dd {
  margin-top: 0;
}

.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;
  left: 16px;
  top: 16px;
  transform: translateY(-150%);
  background: var(--cream);
  color: var(--blue-dark);
  padding: 10px 16px;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.reading-progress {
  position: fixed;
  z-index: 101;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  padding: 0 34px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  color: var(--cream);
  border-bottom: 1px solid rgba(244, 237, 219, 0.3);
  transition: background-color 220ms ease, color 220ms ease, height 220ms ease;
}

.site-header.is-scrolled {
  height: 62px;
  color: var(--blue-dark);
  background: rgba(246, 243, 234, 0.96);
  border-color: var(--rule);
  backdrop-filter: blur(10px);
}

.wordmark {
  justify-self: start;
  text-decoration: none;
  font-family: var(--display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.wordmark span {
  font-family: inherit;
  font-size: 1em;
  font-style: normal;
  font-weight: inherit;
}

.site-header nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.site-header nav a,
.header-buy {
  position: relative;
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-buy {
  justify-self: end;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
}

.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, 0.95fr);
  align-items: center;
  gap: 4vw;
  padding: 112px max(4.5vw, 44px) 78px;
  color: var(--cream);
  background: var(--blue);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero::before {
  top: 0;
  right: 0;
  bottom: 0;
  left: 52%;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(166, 224, 230, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(166, 224, 230, 0.45) 1px, transparent 1px),
    linear-gradient(rgba(166, 224, 230, 0.23) 1px, transparent 1px),
    linear-gradient(90deg, rgba(166, 224, 230, 0.23) 1px, transparent 1px);
  background-size: 88px 88px, 88px 88px, 22px 22px, 22px 22px;
  mask-image: linear-gradient(90deg, transparent, rgba(0,0,0,0.72) 18%, rgba(0,0,0,0.88));
}

.hero::after {
  display: none;
}

.hero-grid {
  position: absolute;
  z-index: 1;
  top: 18%;
  bottom: 18%;
  left: 53.5%;
  width: 1px;
  pointer-events: none;
  background: rgba(166,224,230,.34);
}

.hero-grid::before,
.hero-grid::after {
  content: "";
  position: absolute;
  left: -7px;
  width: 15px;
  height: 1px;
  background: rgba(166,224,230,.58);
}

.hero-grid::before {
  top: 0;
}

.hero-grid::after {
  bottom: 0;
}

.hero-copy,
.scroll-cue {
  position: relative;
  z-index: 2;
}

.hero-copy {
  width: min(760px, 100%);
}

.hero-cover {
  position: relative;
  z-index: 2;
  width: min(450px, 32vw);
  margin: 0;
  justify-self: center;
}

.hero-cover img {
  width: 100%;
  max-height: calc(100svh - 150px);
  object-fit: contain;
  border: 1px solid rgba(240, 234, 220, 0.5);
}

.eyebrow,
.section-kicker {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.055em;
}

.hero-the {
  display: block;
  margin: 0 0 0.08em 0.04em;
  font-size: clamp(62px, 6.2vw, 102px);
}

.hero-blueprint {
  display: block;
  font-size: clamp(92px, 11vw, 178px);
}

.hero-subtitle {
  margin: 38px 0 22px;
  font-family: var(--serif);
  font-size: clamp(25px, 2.35vw, 38px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.012em;
}

.hero-authors {
  margin: 0;
  color: var(--cyan-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 12px 20px;
  border: 1px solid currentColor;
  text-decoration: none;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--blue-dark);
  background: var(--cream);
  border-color: var(--cream);
}

.button-primary:hover,
.button-primary:focus-visible {
  color: var(--cream);
  background: var(--blue-black);
  border-color: var(--blue-black);
}

.button-quiet {
  color: var(--cream);
  background: transparent;
  border-color: rgba(244, 237, 219, 0.65);
}

.button-quiet:hover,
.button-quiet:focus-visible {
  color: var(--blue-dark);
  background: var(--cream);
}

.scroll-cue {
  position: absolute;
  left: max(4.5vw, 44px);
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--cyan-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.scroll-cue i {
  position: relative;
  display: block;
  width: 70px;
  height: 1px;
  background: currentColor;
  overflow: visible;
}

.scroll-cue i::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(-45deg);
}

.hero-reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: hero-in 720ms cubic-bezier(.2,.7,.2,1) forwards;
}

.hero-reveal:nth-child(2) { animation-delay: 90ms; }
.hero-reveal:nth-child(3) { animation-delay: 180ms; }
.hero-reveal:nth-child(4) { animation-delay: 250ms; }
.hero-reveal:nth-child(5) { animation-delay: 320ms; }

@keyframes hero-in {
  to { opacity: 1; transform: translateY(0); }
}

.section-kicker {
  width: var(--page);
  margin: 0 auto 54px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--blue);
}

.section-kicker span {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid currentColor;
  font-size: 10px;
}

.display-heading {
  margin-bottom: 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(48px, 6.2vw, 104px);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.premise {
  position: relative;
  overflow: hidden;
  padding: 110px 0 120px;
  background: var(--cream);
}

.premise::after {
  display: none;
}

.premise-layout {
  width: var(--page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(330px, 0.58fr);
  gap: 8vw;
  align-items: start;
}

.premise .display-heading {
  color: var(--blue-dark);
  max-width: 920px;
}

.premise-copy {
  padding-top: 7px;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.66;
}

.model {
  padding: 112px 0 0;
}

.model-intro {
  width: var(--page);
  margin: 0 auto 110px;
}

.model-intro .section-kicker {
  width: 100%;
}

.model-intro .display-heading {
  color: var(--blue-dark);
}

.model-layout {
  width: var(--page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 7vw;
  align-items: start;
}

.model-index {
  position: sticky;
  top: 100px;
  padding-top: 14px;
  border-top: 2px solid var(--blue);
}

.model-index > p {
  margin-bottom: 22px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.model-index ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.model-index a {
  display: grid;
  grid-template-columns: 27px 1fr;
  gap: 8px;
  padding: 8px 0;
  text-decoration: none;
  color: #708087;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.1;
  transition: color 180ms ease, transform 180ms ease;
}

.model-index a span {
  color: var(--cyan);
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: 0.07em;
}

.model-index a:hover,
.model-index a:focus-visible,
.model-index a.is-active {
  color: var(--blue-dark);
  transform: translateX(5px);
}

.propositions {
  min-width: 0;
}

.proposition {
  padding: 0 0 118px;
  scroll-margin-top: 88px;
}

.proposition + .proposition {
  padding-top: 105px;
  border-top: 1px solid var(--rule);
}

.proposition-header {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  margin-bottom: 58px;
}

.proposition-number {
  padding-top: 10px;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.proposition-header h3 {
  max-width: 930px;
  margin: 0;
  color: var(--blue-dark);
  font-family: var(--display);
  font-size: clamp(45px, 5.2vw, 80px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.proposition-body {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(340px, 1fr);
  gap: 6vw;
  padding-left: 110px;
}

.key-points {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--blue);
}

.key-points li {
  position: relative;
  padding: 14px 0 14px 27px;
  border-bottom: 1px solid var(--rule);
  color: var(--blue-dark);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.42;
}

.key-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.long-copy {
  max-width: var(--reading);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.72;
}

.long-copy p {
  margin-bottom: 1.2em;
}

.comparison {
  margin-top: 98px;
  color: var(--ink);
  background: transparent;
  border-top: 1px solid var(--blue-dark);
  border-bottom: 1px solid var(--blue-dark);
}

.comparison-title {
  display: grid;
  grid-template-columns: 1fr 2fr;
  align-items: end;
  gap: 30px;
  padding: 44px 48px 37px;
  border-bottom: 1px solid var(--rule);
}

.comparison-title p {
  margin: 0;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.comparison-title h4 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(37px, 4.2vw, 68px);
  color: var(--blue-dark);
  font-weight: 700;
  line-height: 1;
}

.comparison-head,
.comparison-grid > div {
  display: grid;
  grid-template-columns: 1fr 1.38fr 1.38fr;
}

.comparison-head {
  background: rgba(7, 95, 145, 0.05);
}

.comparison-head strong,
.comparison-grid dt,
.comparison-grid dd {
  margin: 0;
  padding: 17px 22px;
}

.comparison-head strong {
  color: var(--blue);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.comparison-grid {
  margin: 0;
}

.comparison-grid > div {
  border-top: 1px solid var(--rule);
}

.comparison-grid dt {
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.comparison-grid dd {
  border-left: 1px solid var(--rule);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.45;
}

.bank-diagram {
  position: relative;
  margin: 100px 0 0;
  padding: 52px;
  overflow: hidden;
  color: var(--blue-dark);
  background: #e4edf0;
  border-top: 1px solid var(--blue);
  border-bottom: 1px solid var(--blue);
}

.bank-diagram::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(7,95,145,.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7,95,145,.25) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.bank-diagram > * {
  position: relative;
  z-index: 1;
}

.bank-diagram figcaption {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  align-items: end;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(7,62,94,.28);
}

.bank-diagram figcaption span,
.bank-diagram figcaption > p {
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.bank-diagram figcaption h4 {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(38px, 4.4vw, 66px);
  font-weight: 700;
  line-height: 0.98;
}

.bank-diagram figcaption > p {
  grid-column: 2;
  margin: 10px 0 0;
  text-transform: none;
  letter-spacing: 0.04em;
}

.diagram-caption {
  margin: 30px 0 0;
  font-family: var(--display);
  font-size: clamp(26px, 3.2vw, 48px);
  font-weight: 700;
  line-height: 1.05;
  text-align: center;
}

.bank-lanes {
  padding: 44px 0 30px;
}

.diagram-lane + .diagram-lane {
  margin-top: 46px;
  padding-top: 38px;
  border-top: 1px solid rgba(7, 62, 94, 0.28);
}

.diagram-lane h5 {
  margin: 0 0 18px;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lane-flow {
  display: grid;
  grid-template-columns: minmax(130px, 0.75fr) 86px minmax(180px, 1.15fr) 180px minmax(180px, 1fr);
  align-items: stretch;
}

.lane-node {
  min-height: 116px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(7, 62, 94, 0.52);
  background: rgba(246, 242, 233, 0.55);
}

.lane-node strong,
.lane-node span {
  display: block;
}

.lane-node strong {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.08;
}

.lane-node span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.4;
}

.lane-node-primary,
.lane-node-firm {
  border-color: var(--blue-dark);
}

.one-way,
.two-way {
  align-self: center;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1.35;
  text-align: center;
  text-transform: uppercase;
}

.one-way i {
  display: block;
  margin-top: 6px;
  font-family: var(--sans);
  font-size: 26px;
  font-style: normal;
  font-weight: 400;
  line-height: 1;
}

.two-way {
  display: grid;
  gap: 20px;
  padding: 0 12px;
}

.two-way span {
  display: block;
  padding: 6px 0;
  border-bottom: 1px solid rgba(7, 62, 94, 0.42);
}

.two-way i {
  font-size: 15px;
  font-style: normal;
  font-weight: 400;
}

.governance-flow {
  grid-template-columns: minmax(150px, 1fr) 86px minmax(150px, 1fr) 125px minmax(150px, 1fr);
}

.authority-boundary {
  display: grid;
  grid-template-columns: 1fr 44px 1fr;
  gap: 22px;
  align-items: center;
  padding: 27px 0;
  border-top: 1px solid rgba(7, 62, 94, 0.35);
  border-bottom: 1px solid rgba(7, 62, 94, 0.35);
}

.authority-boundary p {
  margin: 0;
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.5;
}

.authority-boundary > span {
  color: var(--blue);
  font-family: var(--serif);
  font-size: 36px;
  text-align: center;
}

.diagram-note {
  max-width: 760px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
}

.architecture {
  position: relative;
  padding: 118px 0 130px;
  overflow: hidden;
  background: #e8edef;
}

.architecture::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,111,174,.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,111,174,.12) 1px, transparent 1px);
  background-size: 48px 48px;
}

.architecture > * {
  position: relative;
  z-index: 1;
}

.architecture-heading {
  width: var(--page);
  margin: 0 auto 78px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, .58fr);
  gap: 6vw;
  align-items: end;
}

.architecture-heading h2 {
  max-width: 920px;
  color: var(--blue-dark);
}

.architecture-heading > p {
  margin: 0;
  padding-bottom: 8px;
  font-family: var(--serif);
  font-size: 18px;
}

.system-map {
  width: var(--page);
  margin: 0 auto;
  padding: 44px;
  color: var(--ink);
  background: var(--cream);
  border: 1px solid rgba(7, 62, 94, 0.2);
}

.system-map > figcaption {
  color: var(--blue-dark);
  font-family: var(--display);
  font-size: clamp(30px, 3.4vw, 53px);
  font-weight: 700;
  line-height: 1.04;
}

.architecture-stack {
  border-top: 1px solid rgba(7, 62, 94, 0.35);
}

.architecture-layer {
  display: grid;
  grid-template-columns: 52px minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 30px;
  align-items: start;
  padding: 34px 0;
  border-bottom: 1px solid rgba(7, 62, 94, 0.25);
}

.layer-number {
  color: var(--blue);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.layer-heading span,
.layer-heading strong {
  display: block;
}

.layer-heading span,
.production-domain > span,
.ownership-foundation > span {
  margin-bottom: 8px;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.layer-heading strong {
  font-family: var(--serif);
  font-size: 25px;
  line-height: 1.15;
}

.architecture-layer > p {
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.58;
}

.layer-connection {
  width: calc(100% - 52px);
  margin-left: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 10px 0;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.layer-connection i {
  font-family: var(--serif);
  font-size: 22px;
  font-style: normal;
  font-weight: 400;
}

.coordination-institutions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(7, 62, 94, 0.25);
}

.coordination-institutions > div {
  padding: 16px 18px 16px 0;
  border-bottom: 1px solid rgba(7, 62, 94, 0.25);
}

.coordination-institutions > div + div {
  padding-left: 18px;
  border-left: 1px solid rgba(7, 62, 94, 0.25);
}

.coordination-institutions strong,
.coordination-institutions span,
.production-domain strong {
  display: block;
}

.coordination-institutions strong {
  color: var(--blue-dark);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.2;
}

.coordination-institutions span {
  margin-top: 7px;
  color: rgba(22, 47, 60, 0.8);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.45;
}

.production-domains {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid rgba(7, 62, 94, 0.32);
}

.production-domain {
  padding: 20px 24px 20px 0;
}

.production-domain + .production-domain {
  padding-left: 24px;
  border-left: 1px solid rgba(7, 62, 94, 0.32);
}

.production-domain strong {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.12;
}

.production-domain p {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
}

.ownership-foundation {
  padding: 27px 30px;
  color: var(--cream);
  background: var(--blue-dark);
}

.ownership-foundation > span {
  color: var(--cyan-soft);
}

.ownership-foundation strong {
  display: block;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.12;
}

.people-note {
  margin: 32px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(7, 62, 94, 0.25);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
}

.planning-instruments {
  width: var(--page);
  margin: 125px auto 0;
  display: grid;
  grid-template-columns: minmax(280px, .65fr) minmax(500px, 1fr);
  gap: 8vw;
  align-items: start;
}

.planning-sticky {
  position: sticky;
  top: 100px;
}

.planning-sticky .eyebrow {
  color: var(--blue);
}

.planning-sticky h3 {
  margin: 17px 0 0;
  color: var(--blue-dark);
  font-family: var(--display);
  font-size: clamp(38px, 4vw, 62px);
  font-weight: 700;
  line-height: 1;
}

.planning-instruments ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--blue);
}

.planning-instruments li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid rgba(0,79,131,.25);
}

.planning-instruments li > span {
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .1em;
}

.planning-instruments strong {
  color: var(--blue-dark);
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
}

.planning-instruments p {
  margin: 6px 0 0;
  font-family: var(--serif);
  font-size: 17px;
}

.architecture-coda {
  width: min(900px, calc(100vw - 72px));
  margin: 128px auto 0;
  padding: 52px 0 0;
  border-top: 2px solid var(--blue);
  color: var(--blue-dark);
  font-family: var(--display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.08;
  text-align: center;
}

.boundaries {
  padding: 120px 0 125px;
  color: var(--cream);
  background:
    linear-gradient(rgba(88,200,214,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88,200,214,.07) 1px, transparent 1px),
    var(--blue-dark);
  background-size: 32px 32px;
}

.section-kicker-light {
  color: var(--cyan-soft);
}

.boundaries > .display-heading {
  width: var(--page);
  margin: 0 auto 78px;
  color: var(--cream);
}

.boundary-list {
  width: var(--page);
  margin: 0 auto;
  border-top: 1px solid rgba(244,237,219,.35);
}

.boundary-list article {
  display: grid;
  grid-template-columns: 70px minmax(270px, .72fr) minmax(320px, 1fr);
  gap: 35px;
  align-items: baseline;
  padding: 35px 0;
  border-bottom: 1px solid rgba(244,237,219,.24);
}

.boundary-list article > span {
  color: var(--cyan-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .1em;
}

.boundary-list h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(27px, 2.7vw, 43px);
  font-weight: 700;
  line-height: 1.05;
}

.boundary-list p {
  margin: 0;
  color: rgba(244,237,219,.9);
  font-family: var(--serif);
  font-size: 18px;
}

.buy-section {
  width: 100%;
  padding: 120px max(5vw, 48px);
  display: grid;
  grid-template-columns: minmax(300px, .72fr) minmax(380px, .8fr);
  gap: 9vw;
  align-items: center;
  overflow: hidden;
  background: var(--cream);
}

.book-object {
  position: relative;
  width: min(430px, 80%);
  margin: 0 auto;
  transform: none;
  filter: none;
}

.book-object::before,
.book-object::after {
  display: none;
}

.book-object::before {
  inset: 15px -15px -15px 15px;
}

.book-object::after {
  inset: 30px -30px -30px 30px;
  opacity: .62;
}

.cover-image {
  width: 100%;
  height: auto;
  border: 1px solid rgba(5,59,93,.22);
}

.buy-copy {
  max-width: 650px;
}

.buy-copy .eyebrow {
  color: var(--blue);
}

.buy-copy h2 {
  margin: 20px 0 30px;
  color: var(--blue-dark);
  font-family: var(--display);
  font-size: clamp(48px, 6vw, 92px);
  font-weight: 700;
  letter-spacing: -.045em;
  line-height: .93;
}

.buy-copy > p:not(.eyebrow) {
  max-width: 580px;
  font-family: var(--serif);
  font-size: 18px;
}

.buy-copy dl {
  margin: 38px 0;
  border-top: 1px solid var(--rule);
}

.buy-copy dl div {
  display: grid;
  grid-template-columns: 105px 1fr;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}

.buy-copy dt {
  color: var(--blue);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.buy-copy dd {
  font-size: 13px;
  font-weight: 650;
}

.buy-copy .button-primary {
  color: var(--cream);
  background: var(--blue);
  border-color: var(--blue);
}

.buy-copy .button-primary:hover,
.buy-copy .button-primary:focus-visible {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

footer {
  min-height: 120px;
  padding: 30px 38px;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 30px;
  align-items: center;
  color: var(--cyan-soft);
  background: var(--blue-black);
  font-size: 11px;
}

footer p {
  margin: 0;
  text-align: center;
}

footer > a:last-child {
  justify-self: end;
  font-weight: 700;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms cubic-bezier(.2,.7,.2,1), transform 650ms cubic-bezier(.2,.7,.2,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

@media (max-width: 1120px) {
  :root {
    --page: min(1000px, calc(100vw - 48px));
  }

  .site-header nav {
    gap: 18px;
  }

  .hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(360px, .8fr);
  }

  .model-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 4vw;
  }

  .proposition-body {
    padding-left: 0;
    gap: 4vw;
  }

  .bank-diagram {
    padding: 38px;
  }
}

@media (max-width: 900px) {
  :root {
    --page: calc(100vw - 40px);
  }

  .site-header {
    height: 64px;
    padding: 0 20px;
    grid-template-columns: 1fr auto;
  }

  .site-header nav,
  .header-buy {
    display: none;
  }

  .menu-button {
    justify-self: end;
    display: grid;
    gap: 4px;
    width: 38px;
    height: 38px;
    padding: 10px 8px;
    border: 0;
    color: inherit;
    background: transparent;
  }

  .menu-button span:not(.sr-only) {
    display: block;
    height: 1px;
    background: currentColor;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

  .mobile-nav {
    position: fixed;
    z-index: 99;
    inset: 0;
    padding: 115px 25px 40px;
    display: flex;
    flex-direction: column;
    gap: 0;
    color: var(--cream);
    background: var(--blue-dark);
  }

  .mobile-nav[hidden] {
    display: none;
  }

  .mobile-nav a {
    padding: 17px 0;
    border-bottom: 1px solid rgba(244,237,219,.25);
    text-decoration: none;
    font-family: var(--display);
    font-size: 30px;
    font-weight: 700;
    line-height: 1.05;
  }

  .hero {
    grid-template-columns: 1fr;
    align-content: center;
    gap: 30px;
    padding: 104px 22px 68px;
  }

  .hero::before {
    top: 52%;
    left: 0;
    opacity: 0.1;
    mask-image: linear-gradient(0deg, rgba(0,0,0,.82), transparent 92%);
  }

  .hero-grid {
    display: none;
  }

  .hero-copy {
    width: 100%;
  }

  .hero h1,
  .hero-subtitle,
  .hero-authors,
  .hero-actions,
  .hero .eyebrow {
    position: relative;
    z-index: 1;
  }

  .premise-layout,
  .architecture-heading,
  .planning-instruments,
  .buy-section {
    grid-template-columns: 1fr;
  }

  .premise-layout {
    gap: 50px;
  }

  .premise-copy {
    max-width: 680px;
  }

  .model-layout {
    grid-template-columns: 1fr;
  }

  .model-index {
    position: static;
    margin-bottom: 70px;
  }

  .model-index ol {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 25px;
  }

  .proposition-body {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .key-points {
    max-width: 680px;
  }

  .comparison-title,
  .bank-diagram figcaption {
    grid-template-columns: 1fr;
  }

  .comparison-title h4,
  .bank-diagram figcaption h4,
  .bank-diagram figcaption > p {
    grid-column: 1;
    grid-row: auto;
  }

  .architecture-heading {
    gap: 35px;
  }

  .planning-instruments {
    gap: 55px;
  }

  .planning-sticky {
    position: static;
  }

  .boundary-list article {
    grid-template-columns: 45px 1fr;
  }

  .boundary-list p {
    grid-column: 2;
  }

  .buy-section {
    gap: 90px;
  }

  .book-object {
    width: min(380px, 72vw);
  }
}

@media (max-width: 620px) {
  :root {
    --page: calc(100vw - 28px);
  }

  body {
    font-size: 16px;
  }

  .hero {
    min-height: 820px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-the {
    font-size: clamp(65px, 23vw, 94px);
  }

  .hero-blueprint {
    font-size: clamp(65px, 21.6vw, 88px);
    letter-spacing: -0.065em;
  }

  .hero-subtitle {
    font-size: 31px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    width: min(330px, 100%);
  }

  .button {
    justify-content: space-between;
  }

  .scroll-cue {
    left: 18px;
  }

  .premise,
  .architecture,
  .boundaries {
    padding-top: 82px;
    padding-bottom: 85px;
  }

  .section-kicker {
    margin-bottom: 38px;
  }

  .display-heading {
    font-size: clamp(42px, 14vw, 66px);
  }

  .premise-copy,
  .long-copy {
    font-size: 17px;
  }

  .model {
    padding-top: 85px;
  }

  .model-intro {
    margin-bottom: 68px;
  }

  .model-index ol {
    grid-template-columns: 1fr;
  }

  .proposition {
    padding-bottom: 80px;
  }

  .proposition + .proposition {
    padding-top: 72px;
  }

  .proposition-header {
    grid-template-columns: 42px 1fr;
    gap: 5px;
    margin-bottom: 42px;
  }

  .proposition-number {
    padding-top: 4px;
  }

  .proposition-header h3 {
    font-size: clamp(35px, 10.8vw, 52px);
  }

  .comparison {
    margin-top: 70px;
  }

  .comparison-title {
    padding: 30px 22px 25px;
  }

  .comparison-head {
    display: none;
  }

  .comparison-grid > div {
    grid-template-columns: 1fr;
    padding: 18px 20px;
  }

  .comparison-grid dt,
  .comparison-grid dd {
    padding: 0;
  }

  .comparison-grid dt {
    margin-bottom: 15px;
  }

  .comparison-grid dd {
    position: relative;
    padding: 25px 0 12px;
    border-left: 0;
    border-top: 1px solid var(--rule);
  }

  .comparison-grid dd::before {
    content: attr(data-label);
    position: absolute;
    top: 7px;
    left: 0;
    color: var(--blue);
    font-family: var(--sans);
    font-size: 8px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
  }

  .bank-diagram {
    width: calc(100% + 28px);
    margin-left: -14px;
    padding: 30px 15px;
  }

  .system-map {
    width: 100%;
    padding: 25px 14px;
    box-shadow: none;
  }

  .planning-instruments {
    margin-top: 90px;
  }

  .planning-instruments li {
    grid-template-columns: 35px 1fr;
    gap: 10px;
  }

  .architecture-coda {
    width: calc(100vw - 28px);
    margin-top: 90px;
    font-size: 30px;
  }

  .boundary-list article {
    grid-template-columns: 31px 1fr;
    gap: 13px;
  }

  .boundary-list h3 {
    font-size: 29px;
  }

  .boundary-list p {
    font-size: 17px;
  }

  .buy-section {
    padding: 85px 22px;
  }

  .book-object {
    width: min(300px, 76vw);
  }

  .buy-copy h2 {
    font-size: 54px;
  }

  footer {
    grid-template-columns: 1fr;
    text-align: left;
  }

  footer p {
    text-align: left;
  }

  footer > a:last-child {
    justify-self: start;
  }
}

@media (max-width: 1120px) {
  .lane-flow {
    grid-template-columns: minmax(120px, .8fr) 64px minmax(160px, 1.1fr) 145px minmax(160px, 1fr);
  }

  .governance-flow {
    grid-template-columns: minmax(130px, 1fr) 64px minmax(130px, 1fr) 104px minmax(130px, 1fr);
  }
}

@media (max-width: 900px) {
  .hero-cover {
    width: min(310px, 46vw);
    margin: 5px auto 45px;
  }

  .hero-cover img {
    max-height: 58svh;
  }

  .lane-flow {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .one-way {
    min-height: 74px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .one-way i {
    transform: rotate(90deg);
  }

  .two-way {
    min-height: 112px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
  }

  .two-way::before {
    content: "↕";
    margin-bottom: 5px;
    font-family: var(--serif);
    font-size: 26px;
    font-weight: 400;
  }

  .two-way i {
    display: none;
  }

  .two-way span {
    border: 0;
  }

  .authority-boundary {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .authority-boundary > span {
    font-size: 28px;
  }

  .architecture-layer {
    grid-template-columns: 42px 1fr;
    gap: 22px;
  }

  .architecture-layer > p,
  .coordination-institutions,
  .production-domains {
    grid-column: 2;
  }

  .layer-connection {
    width: calc(100% - 42px);
    margin-left: 42px;
  }
}

@media (max-width: 620px) {
  .hero-cover {
    width: min(248px, 68vw);
    margin-top: 20px;
  }

  .hero-cover img {
    max-height: none;
  }

  .bank-lanes {
    padding-top: 34px;
  }

  .lane-node {
    min-height: 105px;
  }

  .diagram-lane + .diagram-lane {
    margin-top: 34px;
    padding-top: 30px;
  }

  .diagram-caption {
    font-size: 29px;
  }

  .architecture-layer {
    grid-template-columns: 30px 1fr;
    gap: 14px;
    padding: 28px 0;
  }

  .architecture-layer > p,
  .coordination-institutions,
  .production-domains {
    grid-column: 2;
  }

  .layer-heading strong {
    font-size: 21px;
  }

  .layer-connection {
    width: calc(100% - 30px);
    margin-left: 30px;
  }

  .coordination-institutions,
  .production-domains {
    grid-template-columns: 1fr;
  }

  .coordination-institutions > div + div,
  .production-domain + .production-domain {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid rgba(7, 62, 94, 0.25);
  }

  .production-domain {
    padding: 18px 0;
  }

  .ownership-foundation {
    padding: 22px;
  }

  .ownership-foundation strong {
    font-size: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal,
  .hero-reveal {
    opacity: 1;
    transform: none;
  }
}