:root {
  --ink: #12151b;
  --muted: #636974;
  --paper: #f4f1e9;
  --paper-2: #ebe5da;
  --white: #fbfaf6;
  --dark: #0d1016;
  --dark-2: #151922;
  --line: rgba(18, 21, 27, 0.14);
  --line-strong: rgba(18, 21, 27, 0.24);
  --line-dark: rgba(255, 255, 255, 0.13);
  --gold: #d4a017;
  --gold-light: #e0b43d;
  --gold-ink: #946500;
  --ivory: #f5f1e6;
  --radius: 24px;
  --shell: min(1180px, calc(100vw - 44px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { max-width: 100%; }
::selection { background: var(--gold); color: var(--dark); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 1000;
  background: var(--white);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}
.skip-link:focus { left: 12px; }

.shell { width: var(--shell); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  color: var(--ivory);
  background: rgba(13, 16, 22, .94);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--line-dark);
  box-shadow: 0 8px 28px rgba(5, 7, 10, .16);
}
.nav-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 720;
  letter-spacing: -.02em;
}
.brand-logo {
  width: 31px;
  height: 31px;
  display: block;
  flex: none;
}
.nav { display: flex; align-items: center; gap: 28px; }
.nav a {
  position: relative;
  text-decoration: none;
  color: rgba(245, 241, 230, .68);
  font-size: 14px;
  font-weight: 620;
  transition: color .16s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 1px;
  background: var(--gold);
  transition: right .16s ease;
}
.nav a:hover,
.nav a:focus-visible { color: var(--ivory); }
.nav a:hover::after,
.nav a:focus-visible::after { right: 0; }

.hero {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 72px;
  align-items: center;
  padding-block: 76px 96px;
}
.eyebrow,
.section-kicker {
  margin: 0 0 20px;
  text-transform: uppercase;
  letter-spacing: .15em;
  font-size: 11px;
  font-weight: 800;
  color: var(--muted);
}
.hero h1 {
  margin: 0;
  max-width: 820px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(68px, 9vw, 132px);
  line-height: .82;
  letter-spacing: -.065em;
  font-weight: 500;
}
.hero h1 span { color: var(--gold-ink); }
.lede {
  max-width: 760px;
  margin: 42px 0 0;
  font-size: clamp(20px, 2.15vw, 29px);
  line-height: 1.37;
  letter-spacing: -.025em;
}
.lede strong { font-weight: 760; }
.principle {
  margin-top: 46px;
  border-top: 1px solid var(--ink);
  padding-top: 17px;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  max-width: 770px;
}
.principle-label {
  text-transform: uppercase;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--muted);
}
.principle p {
  margin: 0;
  font-size: 18px;
  font-weight: 680;
  line-height: 1.4;
}

.agency-diagram {
  position: relative;
  aspect-ratio: 1;
  max-width: 520px;
  width: 100%;
  justify-self: end;
  isolation: isolate;
}
.agency-diagram::before {
  content: "";
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 49%, rgba(212,160,23,.17), rgba(212,160,23,.045) 43%, transparent 69%);
  z-index: -2;
}
.orbit {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.orbit-outer {
  inset: 13%;
  border: 1px solid rgba(18,21,27,.17);
}
.orbit-inner {
  inset: 29%;
  border: 1px dashed rgba(18,21,27,.20);
}
.center-node {
  position: absolute;
  inset: 35.5%;
  border-radius: 50%;
  background: var(--dark);
  color: var(--ivory);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 24px 74px rgba(13,16,22,.24);
}
.center-node img {
  width: 62px;
  height: 62px;
  margin-bottom: 8px;
}
.center-node span {
  width: 88px;
  font-size: 9px;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: .11em;
  color: rgba(245,241,230,.68);
}
.node {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 15px;
  font-size: 12px;
  font-weight: 760;
  box-shadow: 0 10px 30px rgba(17,21,27,.06);
}
.node span {
  color: var(--gold-ink);
  font-size: 9px;
  letter-spacing: .08em;
}
.node-a { left: 2%; top: 24%; }
.node-b { right: 8%; top: 17%; }
.node-c { right: 1%; bottom: 27%; }
.node-d { left: 3%; bottom: 15%; }

.section { padding-block: 110px; }
.dark-section {
  position: relative;
  overflow: hidden;
  background: var(--dark);
  color: var(--ivory);
}
.dark-section::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  right: -220px;
  bottom: -260px;
  border: 1px solid rgba(212,160,23,.18);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(212,160,23,.025), 0 0 0 180px rgba(212,160,23,.018);
  pointer-events: none;
}
.dark-section .section-kicker { color: rgba(245,241,230,.50); }
.two-col,
.delegation-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 90px;
  align-items: start;
}
.section h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px, 5.5vw, 76px);
  line-height: .99;
  letter-spacing: -.045em;
  font-weight: 500;
}
.prose { font-size: 20px; line-height: 1.65; }
.large-prose { font-size: clamp(21px, 2.1vw, 29px); line-height: 1.5; }
.prose p:first-child { margin-top: 0; }
.prose p:last-child { margin-bottom: 0; }
.dark-section strong { color: var(--gold-light); }

.section-head { max-width: 840px; margin-bottom: 56px; }
.section-head > p:last-child {
  margin: 24px 0 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
}
.responsibility-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.responsibility-card {
  min-height: 315px;
  padding: 28px 28px 32px 0;
  border-right: 1px solid var(--line);
}
.responsibility-card + .responsibility-card { padding-left: 28px; }
.responsibility-card:last-child { border-right: none; }
.card-number {
  font-size: 11px;
  font-weight: 800;
  color: var(--gold-ink);
  letter-spacing: .12em;
}
.responsibility-card h3 {
  margin: 44px 0 14px;
  font-family: Georgia, serif;
  font-size: 34px;
  letter-spacing: -.03em;
  font-weight: 500;
}
.responsibility-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.delegation-section {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}
.delegation-statement h2 span { color: var(--gold-ink); }
.delegation-grid .prose { max-width: 650px; }

.compact-head { max-width: 930px; }
.application-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 60px;
  border-top: 1px solid var(--line);
}
.application-list div {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 20px;
  font-weight: 650;
}
.application-list div:nth-child(odd) {
  border-right: 1px solid var(--line);
  padding-right: 30px;
}
.application-list div:nth-child(even) { padding-left: 30px; }

.classroom-section { padding-top: 34px; }
.classroom-card {
  position: relative;
  overflow: hidden;
  background: var(--dark-2);
  color: var(--ivory);
  border-radius: var(--radius);
  padding: clamp(44px, 6vw, 78px);
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 76px;
  box-shadow: 0 30px 90px rgba(13,16,22,.13);
}
.classroom-card::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  top: -150px;
  left: -90px;
  border: 1px solid rgba(212,160,23,.16);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(212,160,23,.025);
}
.classroom-card > * { position: relative; }
.classroom-card .section-kicker { color: rgba(245,241,230,.48); }
.classroom-card h2 { font-size: clamp(42px, 5vw, 68px); }
.classroom-copy {
  font-size: 18px;
  line-height: 1.65;
  color: rgba(245,241,230,.76);
}
.text-link {
  display: inline-flex;
  gap: 8px;
  margin-top: 24px;
  color: var(--ivory);
  font-weight: 760;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}
.text-link:hover,
.text-link:focus-visible { color: var(--gold-light); }

.provenance { padding-top: 92px; }
.provenance-rule { height: 1px; background: var(--line); margin-bottom: 38px; }
.provenance-grid {
  display: grid;
  grid-template-columns: .55fr 1.45fr;
  gap: 80px;
}
.provenance-grid h2 { font-size: clamp(42px, 4.5vw, 64px); }
.provenance-grid p:last-child {
  max-width: 780px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}
.provenance-grid a {
  text-decoration-color: rgba(148,101,0,.55);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
.provenance-grid a:hover,
.provenance-grid a:focus-visible { color: var(--gold-ink); }

.site-footer {
  background: var(--dark);
  color: var(--ivory);
  padding: 54px 0 42px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 42px;
  align-items: start;
}
.footer-identity {
  display: flex;
  align-items: center;
  gap: 15px;
}
.footer-logo {
  width: 39px;
  height: 39px;
  flex: none;
}
.footer-brand {
  font-family: Georgia, serif;
  font-size: 29px;
  letter-spacing: -.03em;
}
.footer-grid p { color: rgba(245,241,230,.50); margin: 5px 0 0; }
.footer-links { display: flex; gap: 24px; padding-top: 7px; }
.footer-links a {
  color: rgba(245,241,230,.74);
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
}
.footer-links a:hover,
.footer-links a:focus-visible { color: var(--gold-light); }
.copyright {
  grid-column: 1 / -1;
  font-size: 12px;
  padding-top: 34px;
  border-top: 1px solid var(--line-dark);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

@media (max-width: 980px) {
  .nav { display: none; }
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    min-height: auto;
    padding-top: 82px;
  }
  .agency-diagram { justify-self: center; max-width: 440px; }
  .two-col,
  .delegation-grid,
  .classroom-card,
  .provenance-grid { grid-template-columns: 1fr; gap: 44px; }
  .responsibility-grid { grid-template-columns: repeat(2, 1fr); }
  .responsibility-card:nth-child(2) { border-right: none; }
  .responsibility-card:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .responsibility-card:nth-child(3) { padding-left: 0; }
}

@media (max-width: 640px) {
  :root { --shell: min(100% - 30px, 1180px); }
  html { scroll-padding-top: 68px; }
  .nav-wrap { min-height: 66px; }
  .brand-logo { width: 29px; height: 29px; }
  .brand span { font-size: 15px; }
  .hero { padding-block: 62px 74px; }
  .hero h1 { font-size: clamp(58px, 21vw, 90px); }
  .lede { margin-top: 30px; font-size: 20px; }
  .principle { grid-template-columns: 1fr; gap: 8px; margin-top: 34px; }
  .agency-diagram { margin-top: 18px; max-width: 355px; }
  .center-node img { width: 52px; height: 52px; }
  .center-node span { width: 76px; font-size: 8px; }
  .node { font-size: 10px; padding: 9px 11px; gap: 6px; }
  .node span { font-size: 8px; }
  .section { padding-block: 78px; }
  .section h2 { font-size: 44px; }
  .responsibility-grid { grid-template-columns: 1fr; }
  .responsibility-card,
  .responsibility-card + .responsibility-card,
  .responsibility-card:nth-child(3) {
    min-height: 0;
    padding: 24px 0 28px;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .responsibility-card:last-child { border-bottom: none; }
  .responsibility-card h3 { margin-top: 24px; }
  .application-list { grid-template-columns: 1fr; }
  .application-list div,
  .application-list div:nth-child(odd),
  .application-list div:nth-child(even) {
    border-right: none;
    padding: 18px 0;
  }
  .classroom-card { border-radius: 18px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-direction: column; gap: 12px; padding-top: 0; }
  .copyright { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}