:root {
  --ink: #14221e;
  --muted: #63706b;
  --paper: #f5f3ed;
  --paper-deep: #ebe8df;
  --white: #fffefa;
  --green: #173f35;
  --green-bright: #235c4b;
  --green-pale: #dce9e0;
  --lime: #d6e994;
  --line: rgba(20, 34, 30, 0.17);
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shell: min(1240px, calc(100vw - 64px));
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

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

.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: 100;
  top: 12px;
  left: 12px;
  padding: 10px 15px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 243, 237, 0.94);
}

.nav-shell {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--paper);
  background: var(--green);
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1;
}

.brand-mark span { transform: translateY(-1px); }

.brand-name {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.site-nav { display: flex; align-items: center; gap: 42px; }

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 33px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-nav ul a {
  position: relative;
  color: #30413b;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.site-nav ul a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--green);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.site-nav ul a:hover::after,
.site-nav ul a.active::after { transform: scaleX(1); }

.nav-cta {
  display: inline-flex;
  min-height: 43px;
  align-items: center;
  gap: 16px;
  padding: 0 18px;
  color: var(--white);
  background: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-decoration: none;
  transition: background 180ms ease, transform 180ms ease;
}

.nav-cta:hover { background: var(--green-bright); transform: translateY(-2px); }
.nav-toggle { display: none; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 23px;
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  display: block;
  width: 25px;
  height: 1px;
  content: "";
  background: currentColor;
}

.hero { overflow: hidden; padding-top: 64px; }

.hero-grid {
  display: grid;
  min-height: 500px;
  grid-template-columns: 1.03fr 0.97fr;
  align-items: center;
}

.hero-copy { position: relative; z-index: 2; padding: 18px 0 55px; }

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(68px, 7.25vw, 108px);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

.hero h1 em {
  color: var(--green-bright);
  font-weight: 400;
}

.hero-intro {
  max-width: 590px;
  margin: 31px 0 0;
  color: #475650;
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.55;
}

.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 30px; }

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--green); }
.button-primary:hover { background: var(--green-bright); }
.button-light { color: var(--green); background: var(--lime); }
.button-light:hover { color: var(--paper); background: var(--green-bright); }

.button-outline { border-color: var(--ink); }
.button-outline:hover { color: var(--paper); background: var(--ink); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--ink);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.text-link span { transition: transform 180ms ease; }
.text-link:hover span { transform: translate(2px, -2px); }

.hero-art {
  position: relative;
  width: 520px;
  height: 520px;
  justify-self: end;
  margin-right: -108px;
}

.orbital {
  position: absolute;
  border: 1px solid rgba(23, 63, 53, 0.24);
  border-radius: 50%;
}

.orbital-one { inset: 20px; }
.orbital-two { inset: 84px; border-style: dashed; }

.hero-seal {
  position: absolute;
  inset: 128px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 50%;
  color: var(--paper);
  background: var(--green);
  box-shadow: 0 38px 70px rgba(23, 63, 53, 0.17);
}

.seal-monogram {
  font-family: var(--serif);
  font-size: 72px;
  letter-spacing: -0.08em;
  line-height: 1;
}

.seal-rule { width: 48px; height: 1px; margin: 20px 0 13px; background: rgba(255,255,255,.4); }
.seal-year { font-size: 8px; font-weight: 700; letter-spacing: .25em; }

.art-label {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--green);
  background: var(--lime);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
  transform: rotate(-7deg);
}

.art-label-one { top: 84px; right: 38px; }
.art-label-two { bottom: 77px; left: 11px; transform: rotate(6deg); }
.art-curve { position: absolute; inset: 0; width: 100%; height: 100%; color: rgba(23,63,53,.6); }

.hero-index {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.hero-index span {
  padding: 20px 0;
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.section { padding: 94px 0; }

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 43px;
}

.section-heading h2,
.mission-intro h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: .98;
}

.section-heading > p {
  max-width: 510px;
  margin: 0 0 5px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
}

.subject-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }

.subject-card {
  position: relative;
  display: flex;
  min-height: 330px;
  overflow: hidden;
  padding: 24px 25px 27px;
  justify-content: space-between;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.17);
  text-decoration: none;
  transition: background 220ms ease, color 220ms ease, transform 220ms ease;
}

.subject-card:hover { z-index: 2; color: var(--white); background: var(--green); transform: translateY(-7px); }
.subject-featured { background: var(--white); }
.subject-more { background: var(--paper-deep); }

.subject-number { color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.subject-card:hover .subject-number { color: rgba(255,255,255,.65); }

.subject-symbol {
  position: absolute;
  top: 66px;
  right: 24px;
  color: rgba(23,63,53,.12);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 60px;
  font-weight: 300;
  letter-spacing: -.1em;
  transition: color 220ms ease, transform 220ms ease;
}

.subject-symbol-serif { font-family: var(--serif); font-size: 82px; }
.subject-card:hover .subject-symbol { color: rgba(255,255,255,.13); transform: scale(1.1) rotate(-4deg); }

.subject-card-copy p { margin: 0 0 11px; color: var(--green-bright); font-size: 9px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.subject-card:hover .subject-card-copy p { color: var(--lime); }
.subject-card-copy h3 { margin: 0 0 13px; font-family: var(--serif); font-size: 33px; font-weight: 400; letter-spacing: -.03em; }
.subject-card-copy > span { display: block; max-width: 230px; color: var(--muted); font-family: var(--serif); font-size: 15px; line-height: 1.5; }
.subject-card:hover .subject-card-copy > span { color: rgba(255,255,255,.7); }

.card-arrow { position: absolute; top: 21px; right: 25px; font-size: 20px; transition: transform 180ms ease; }
.subject-card:hover .card-arrow { transform: translate(3px, -3px); }

.compact-mission { padding: 92px 0; color: var(--paper); background: var(--green); }
.compact-mission .eyebrow { color: var(--lime); }
.mission-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 105px; align-items: center; }
.mission-intro h2 { margin-bottom: 24px; font-size: clamp(45px, 4.5vw, 64px); }
.mission-intro > p:not(.eyebrow) { max-width: 495px; margin: 0; color: rgba(255,255,255,.67); font-family: var(--serif); font-size: 17px; line-height: 1.6; }
.mission-actions { display: flex; align-items: center; gap: 31px; margin-top: 29px; }
.text-link-light { color: var(--paper); border-color: rgba(255,255,255,.7); }
.mission-principles { border-top: 1px solid rgba(255,255,255,.22); }
.mission-principles article { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 23px 0; border-bottom: 1px solid rgba(255,255,255,.22); }
.mission-principles article > span { color: var(--lime); font-family: var(--serif); font-size: 14px; font-style: italic; }
.mission-principles h3 { margin: 0 0 4px; font-family: var(--serif); font-size: 22px; font-weight: 400; }
.mission-principles p { margin: 0; color: rgba(255,255,255,.6); font-family: var(--serif); font-size: 14px; line-height: 1.5; }

.site-footer { padding-top: 75px; color: rgba(255,255,255,.75); background: #0a1c17; }
.footer-main { display: grid; grid-template-columns: 1fr .32fr .32fr; gap: 70px; padding-bottom: 70px; }
.brand-footer { color: var(--white); }
.brand-footer .brand-mark { color: var(--green); background: var(--paper); }
.footer-statement p { margin: 28px 0 0; color: rgba(255,255,255,.58); font-family: var(--serif); font-size: 19px; line-height: 1.45; }
.footer-column { display: flex; align-items: flex-start; flex-direction: column; gap: 11px; }
.footer-column h2 { margin: 0 0 10px; color: var(--lime); font-size: 9px; letter-spacing: .19em; text-transform: uppercase; }
.footer-column a { font-family: var(--serif); font-size: 15px; text-decoration: none; }
.footer-column a:hover { color: var(--white); }
.footer-bottom { display: flex; padding: 24px 0 27px; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.14); }
.footer-bottom p { margin: 0; color: rgba(255,255,255,.4); font-size: 9px; font-weight: 600; letter-spacing: .06em; }

/* Interior pages */
.page-masthead { padding: 93px 0 79px; color: var(--paper); background: var(--green); }
.page-masthead .eyebrow { color: var(--lime); }
.page-masthead h1 { max-width: 850px; margin: 0; font-family: var(--serif); font-size: clamp(57px, 7vw, 94px); font-weight: 400; letter-spacing: -.055em; line-height: .97; }
.page-intro { max-width: 710px; margin: 27px 0 0; color: rgba(255,255,255,.7); font-family: var(--serif); font-size: 20px; line-height: 1.55; }

.prose-layout { display: grid; grid-template-columns: 215px minmax(0, 760px); gap: 85px; padding-top: 83px; padding-bottom: 116px; }
.page-aside { position: sticky; top: 30px; display: flex; height: max-content; align-items: flex-start; flex-direction: column; gap: 9px; }
.page-aside span { margin-bottom: 8px; color: var(--green); font-size: 9px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.page-aside a { color: var(--muted); font-family: var(--serif); font-size: 14px; text-decoration: none; }
.page-aside a:hover { color: var(--green); }

.prose > h2:first-child { margin-top: 0; }
.prose h2 { margin: 72px 0 23px; font-family: var(--serif); font-size: 41px; font-weight: 400; letter-spacing: -.035em; line-height: 1.1; }
.prose h3 { font-family: var(--serif); font-size: 24px; font-weight: 400; }
.prose > p, .prose > ol, .prose > ul { color: #475650; font-family: var(--serif); font-size: 18px; line-height: 1.75; }
.prose > ol, .prose > ul { padding-left: 24px; }
.prose > ol li, .prose > ul li { padding-left: 6px; margin-bottom: 9px; }
.prose a { color: var(--green); text-decoration-color: rgba(23,63,53,.4); text-underline-offset: 3px; }

.catalog-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 38px 0 20px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.catalog-card { display: flex; min-height: 310px; padding: 28px; justify-content: flex-start; flex-direction: column; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-decoration: none; transition: color 180ms ease, background 180ms ease, transform 180ms ease; }
a.catalog-card:hover { z-index: 1; color: var(--white); background: var(--green); transform: translateY(-4px); }
.catalog-kicker { color: var(--green-bright); font-size: 9px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
a.catalog-card:hover .catalog-kicker { color: var(--lime); }
.catalog-card h3 { margin: 45px 0 15px; font-size: 31px; }
.catalog-card p { margin: 0; color: var(--muted); font-family: var(--serif); font-size: 15px; line-height: 1.55; }
a.catalog-card:hover p { color: rgba(255,255,255,.65); }
.catalog-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 24px; font-size: 10px; font-weight: 700; letter-spacing: .04em; }
.catalog-meta b { font-size: 18px; }
.catalog-card-muted { background: var(--paper-deep); }

.module-list { margin: 39px 0 45px; border-top: 1px solid var(--line); }
.module-list > div { display: grid; grid-template-columns: 48px 1fr 1.4fr; gap: 20px; align-items: baseline; padding: 23px 0; border-bottom: 1px solid var(--line); }
.module-list span { color: var(--green-bright); font-family: var(--serif); font-size: 13px; font-style: italic; }
.module-list h3 { margin: 0; font-size: 20px; }
.module-list p { margin: 0; color: var(--muted); font-family: var(--serif); font-size: 15px; }

.principles-grid, .contribution-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 37px 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.principles-grid > div, .contribution-grid > div { min-height: 235px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principles-grid span, .contribution-grid span { color: var(--green-bright); font-size: 9px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.principles-grid h3, .contribution-grid h3 { margin: 42px 0 10px; }
.principles-grid p, .contribution-grid p { margin: 0; color: var(--muted); font-family: var(--serif); font-size: 15px; line-height: 1.55; }

.admonition { padding: 22px 25px; margin: 39px 0; border-left: 3px solid var(--green); background: var(--paper-deep); }
.admonition-title { margin: 0 0 7px; color: var(--green); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.admonition p:last-child { margin-bottom: 0; color: var(--muted); font-family: var(--serif); }
.inline-action { display: inline-flex; margin-top: 16px; padding: 13px 0 4px; border-bottom: 1px solid var(--green); font-family: var(--sans); font-size: 11px; font-weight: 800; letter-spacing: .06em; text-decoration: none !important; }

@media (max-width: 1050px) {
  :root { --shell: min(calc(100% - 44px), 920px); }
  .hero { padding-top: 65px; }
  .hero-grid { grid-template-columns: 1.08fr .92fr; }
  .hero-art { width: 460px; height: 460px; margin-right: -110px; }
  .hero-seal { inset: 115px; }
  .orbital-two { inset: 75px; }
  .seal-monogram { font-size: 54px; }
  .subject-grid { grid-template-columns: repeat(2, 1fr); }
  .subject-card { min-height: 310px; }
  .mission-grid { gap: 60px; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100vw - 36px); }
  body.menu-open { overflow: hidden; }
  .nav-shell { min-height: 72px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 20px; }
  .nav-toggle { display: flex; width: 40px; height: 40px; padding: 12px 7px; align-items: stretch; justify-content: center; flex-direction: column; gap: 6px; border: 0; background: transparent; }
  .nav-toggle > span:not(.sr-only) { display: block; width: 25px; height: 1px; background: var(--ink); transition: transform 180ms ease; }
  .nav-toggle[aria-expanded="true"] > span:nth-last-child(2) { transform: translateY(3.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav { position: fixed; z-index: -1; inset: 72px 0 0; display: none; padding: 38px 25px; align-items: stretch; flex-direction: column; gap: 32px; background: var(--paper); }
  .site-nav.is-open { display: flex; }
  .site-nav ul { align-items: stretch; flex-direction: column; gap: 0; }
  .site-nav li { border-bottom: 1px solid var(--line); }
  .site-nav ul a { display: block; padding: 17px 0; font-family: var(--serif); font-size: 27px; font-weight: 400; }
  .site-nav ul a::after { display: none; }
  .nav-cta { justify-content: space-between; }

  .hero { padding-top: 54px; }
  .hero-grid { display: block; min-height: 0; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(57px, 17vw, 78px); }
  .hero-intro { margin-top: 27px; font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .hero-art { width: 360px; height: 360px; margin: 22px -70px 3px auto; }
  .hero-seal { inset: 90px; }
  .orbital-two { inset: 59px; }
  .seal-monogram { font-size: 46px; }
  .seal-rule { margin: 13px 0 9px; }
  .art-label-one { top: 53px; right: 9px; }
  .art-label-two { bottom: 51px; left: 3px; }
  .hero-index { grid-template-columns: 1fr; padding: 13px 0; }
  .hero-index span { padding: 5px 0; }

  .section { padding: 70px 0; }
  .section-heading { display: block; margin-bottom: 38px; }
  .section-heading > p { margin-top: 22px; }
  .section-heading h2, .mission-intro h2 { font-size: 46px; }
  .subject-grid { grid-template-columns: 1fr; }
  .subject-card { min-height: 255px; }

  .compact-mission { padding: 70px 0; }
  .mission-grid { grid-template-columns: 1fr; gap: 48px; }
  .mission-actions { align-items: flex-start; flex-direction: column; gap: 21px; }

  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-statement { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 6px; }

  .page-masthead { padding: 65px 0 58px; }
  .page-masthead h1 { font-size: 55px; }
  .page-intro { font-size: 18px; }
  .prose-layout { display: block; padding-top: 55px; padding-bottom: 80px; }
  .page-aside { display: none; }
  .prose h2 { margin-top: 58px; font-size: 35px; }
  .catalog-grid, .principles-grid, .contribution-grid { grid-template-columns: 1fr; }
  .catalog-card { min-height: 270px; }
  .module-list > div { grid-template-columns: 35px 1fr; }
  .module-list p { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}