:root {
  color-scheme: light;
  --ink: #142a43;
  --blue: #1e3a5f;
  --blue-deep: #142b47;
  --muted: #5c6c7d;
  --line: #dfe5eb;
  --paper: #fff;
  --surface: #f5f7fa;
  --surface-blue: #edf3f8;
  --content: 1200px;
  --gutter: clamp(22px, 5vw, 76px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:hover { color: #345f89; }
button, summary { font: inherit; }
button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid #7fa5c8;
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  transform: translateY(-160%);
  background: var(--blue-deep);
  color: white;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  background: rgb(255 255 255 / 97%);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  width: min(100%, var(--content));
  min-height: 88px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { display: block; width: 174px; height: auto; }
.menu-toggle {
  display: none;
  width: 46px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
}
.primary-nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 34px); }
.primary-nav > a, .nav-dropdown summary {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  cursor: pointer;
}
.primary-nav > a { padding-block: 12px; }
.primary-nav a[aria-current="page"], .nav-dropdown[open] > summary { color: #315b83; }
.nav-dropdown { position: relative; }
.nav-dropdown summary { list-style: none; padding-block: 12px; }
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown summary::after { content: "⌄"; padding-left: 6px; color: var(--muted); }
.dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: -20px;
  width: 275px;
  padding: 10px;
  background: white;
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgb(20 42 67 / 10%);
}
.dropdown-panel a {
  display: block;
  padding: 11px 12px;
  font-size: 14px;
  text-decoration: none;
}
.dropdown-panel a:hover { background: var(--surface); }

main { min-height: 60vh; }
.container { width: min(100%, var(--content)); margin-inline: auto; padding-inline: var(--gutter); }
.eyebrow {
  margin: 0 0 18px;
  color: #526d87;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
  line-height: 1.5;
  text-transform: uppercase;
}
h1, h2, h3 {
  margin-top: 0;
  font-family: "IBM Plex Sans", Inter, "Segoe UI", Arial, sans-serif;
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.13;
}
h1 { max-width: 850px; margin-bottom: 24px; font-size: clamp(42px, 6.1vw, 70px); }
h2 { margin-bottom: 20px; font-size: clamp(31px, 4vw, 43px); }
h3 { margin-bottom: 12px; font-size: 23px; }
p { margin: 0 0 18px; }
.lead { max-width: 730px; color: var(--muted); font-size: clamp(18px, 2vw, 21px); line-height: 1.65; }
.section { padding-block: clamp(68px, 9vw, 116px); }
.section-muted { background: var(--surface); }
.section-intro { max-width: 680px; margin-bottom: 46px; }
.section-intro p:last-child { color: var(--muted); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  color: var(--blue);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}
.text-link::after { content: "→"; font-size: 19px; transition: transform .18s ease; }
.text-link:hover::after { transform: translateX(4px); }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }

.hero { overflow: hidden; padding-block: clamp(72px, 9vw, 125px) clamp(70px, 8vw, 108px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr); align-items: center; gap: clamp(30px, 5vw, 75px); }
.hero-copy { padding-block: 10px; }
.hero-copy h1 { max-width: 670px; }
.hero-copy .lead { max-width: 640px; }
.hero-visual { min-width: 0; }
.hero-visual img { display: block; width: 100%; height: auto; }
.hero-note { margin-top: 30px; color: var(--muted); font-size: 13px; }

.sector-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.sector-item { min-height: 270px; padding: 28px 28px 26px 0; border-bottom: 1px solid var(--line); }
.sector-item + .sector-item { padding-left: 28px; border-left: 1px solid var(--line); }
.sector-number { display: block; margin-bottom: 38px; color: #78889a; font-size: 13px; letter-spacing: .1em; }
.sector-item h3 a { text-decoration: none; }
.sector-item p { max-width: 340px; margin-bottom: 14px; color: var(--muted); font-size: 15px; }
.sector-item .text-link { font-size: 14px; }

.discipline-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 60px; }
.discipline { display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 26px 0; border-top: 1px solid var(--line); }
.discipline-index { color: #76889a; font-size: 13px; }
.discipline h3 { font-size: 21px; }
.discipline p { margin: 0; color: var(--muted); font-size: 15px; }

.editorial-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 10%; align-items: start; }
.editorial-band .eyebrow { margin-top: 8px; }
.editorial-band p { color: var(--muted); }
.profile-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 9%; align-items: start; }
.profile-grid .profile-copy { max-width: 690px; }
.profile-copy p { color: var(--muted); }
.profile-copy p:first-child { color: var(--ink); font-size: 19px; }
.contact-strip { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.contact-strip h2 { margin-bottom: 9px; font-size: clamp(28px, 3.5vw, 38px); }
.contact-strip p { margin: 0; color: var(--muted); }
.contact-strip .text-link { flex: 0 0 auto; }

.page-hero { padding-block: clamp(74px, 9vw, 120px) 70px; }
.page-hero .lead { max-width: 780px; }
.page-hero h1 { font-size: clamp(42px, 5.5vw, 60px); }
.page-body { padding-block: 68px 108px; }
.content-grid { display: grid; grid-template-columns: minmax(210px, .65fr) minmax(0, 1.35fr); gap: 10%; }
.content-aside { padding-top: 5px; }
.content-aside p { color: var(--muted); font-size: 14px; }
.content-main { max-width: 760px; }
.content-main h2 { margin-top: 48px; font-size: 30px; }
.content-main h2:first-child { margin-top: 0; }
.content-main p, .content-main li { color: var(--muted); }
.content-main ul { padding-left: 22px; }
.content-main li { margin-bottom: 9px; }
.topic-list { margin-top: 28px; border-top: 1px solid var(--line); }
.topic-row { display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.topic-row > span { color: #718398; font-size: 13px; }
.topic-row h3 { margin: 0 0 6px; font-size: 19px; }
.topic-row p { margin: 0; color: var(--muted); font-size: 15px; }
.related-links { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 56px; border-top: 1px solid var(--line); }
.related-links a { min-height: 100px; padding: 23px 20px 20px 0; border-bottom: 1px solid var(--line); font-weight: 600; text-decoration: none; }
.related-links a + a { padding-left: 20px; border-left: 1px solid var(--line); }
.related-links a span { display: block; margin-bottom: 7px; color: var(--muted); font-size: 12px; font-weight: 500; }

.contact-note { max-width: 780px; padding: 28px 30px; border-left: 3px solid #6d88a4; background: var(--surface); }
.contact-note p:last-child { margin: 0; color: var(--muted); }
.contact-followup { margin-top: 24px; }

.site-footer { background: var(--surface); border-top: 1px solid var(--line); }
.footer-main { display: grid; grid-template-columns: 1.1fr 2fr; gap: 10%; padding-block: 58px 48px; }
.footer-brand img { width: 160px; height: auto; }
.footer-brand p { max-width: 270px; margin-top: 22px; color: var(--muted); font-size: 14px; }
.footer-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.footer-nav h2 { margin-bottom: 16px; font-family: inherit; font-size: 13px; letter-spacing: 0; }
.footer-nav a { display: block; width: fit-content; margin: 8px 0; color: var(--muted); font-size: 14px; text-decoration: none; }
.footer-nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 19px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-bottom p { margin: 0; }

@media (max-width: 900px) {
  .header-inner { min-height: 76px; }
  .menu-toggle { display: block; }
  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    padding: 12px var(--gutter) 24px;
    background: white;
    border-bottom: 1px solid var(--line);
  }
  .primary-nav.is-open { display: flex; flex-direction: column; }
  .primary-nav > a, .nav-dropdown summary { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-dropdown summary::after { float: right; }
  .dropdown-panel { position: static; width: auto; padding: 4px 0 10px 14px; border: 0; box-shadow: none; }
  .hero-grid { grid-template-columns: 1fr .8fr; }
  .sector-item { padding-right: 18px; }
  .sector-item + .sector-item { padding-left: 18px; }
}

@media (max-width: 650px) {
  :root { --gutter: 23px; }
  .brand img { width: 152px; }
  .hero { padding-top: 64px; }
  .hero-grid, .editorial-band, .profile-grid, .content-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 28px; }
  .hero-visual { max-width: 500px; margin-inline: auto; }
  .hero-note { margin-top: 18px; }
  .sector-grid { grid-template-columns: 1fr; }
  .sector-item, .sector-item + .sector-item { min-height: 0; padding: 23px 0 27px; border-left: 0; }
  .sector-number { margin-bottom: 20px; }
  .discipline-grid { grid-template-columns: 1fr; }
  .editorial-band, .profile-grid { gap: 24px; }
  .contact-strip { align-items: flex-start; flex-direction: column; }
  .page-body { padding-top: 42px; }
  .content-grid { gap: 32px; }
  .content-aside { max-width: 460px; }
  .related-links { grid-template-columns: 1fr; }
  .related-links a, .related-links a + a { min-height: 76px; padding: 16px 0; border-left: 0; }
  .footer-main { grid-template-columns: 1fr; gap: 36px; }
  .footer-nav { gap: 15px; }
  .footer-bottom { flex-direction: column; gap: 5px; }
}

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