:root {
  --mit-red: #750014;
  --research: #155753;
  --ink: #202124;
  --muted: #555b60;
  --line: #d7dbde;
  --soft: #f4f5f5;
  --research-soft: #edf3f2;
  --paper: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}
a { color: var(--mit-red); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--mit-red); outline-offset: 5px; }
h1, h2, h3, p, dt, dd { overflow-wrap: break-word; }
h1, h2, h3 { line-height: 1.15; }
h1 { margin: 0; font-size: 52px; }
h2 { margin: 0; font-size: 28px; }
h3 { margin: 0 0 12px; font-size: 21px; }
p { margin: 0 0 18px; }
ul { padding-left: 22px; }
li + li { margin-top: 5px; }
.container { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: absolute; left: 20px; top: -100px; z-index: 20; padding: 10px 16px; background: #fff; }
.skip-link:focus { top: 16px; }

.site-header { border-bottom: 1px solid var(--line); background: #fff; }
.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  width: min(1280px, calc(100% - 40px));
  margin-inline: auto;
}
.brand { color: var(--ink); font-size: 20px; font-weight: 700; text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px 22px; font-size: 14px; }
.nav a { padding: 8px 0; color: var(--ink); text-decoration: none; }
.nav a:hover { color: var(--mit-red); text-decoration: underline; }
.nav a[aria-current="page"] { color: var(--mit-red); font-weight: 700; text-decoration: underline; text-decoration-thickness: 2px; }
/* At this size, 34px exceeds the width of the M on every side of the mark. */
.mit-logo-link { display: block; justify-self: end; padding: 34px; line-height: 0; }
.mit-logo-link img { display: block; width: 72px; height: auto; }

.hero { position: relative; display: grid; align-items: start; height: min(460px, 60svh); min-height: 300px; }
.hero-image { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; object-position: center bottom; }
.hero-title-band { position: relative; margin-top: 40px; padding-block: 30px; background: rgba(255, 255, 255, 0.92); text-align: center; }
.hero .lead { max-width: 850px; margin: 14px auto 0; }
.overview-intro { padding-block: 30px; }
.overview-intro .eyebrow { margin-bottom: 8px; }
.overview-intro .intro-text { max-width: 960px; margin: 0; }
.intro { padding-block: 54px 46px; }
.eyebrow { margin: 0 0 14px; font-size: 13px; font-weight: 700; color: var(--mit-red); }
.learning-label { color: var(--mit-red); }
.research-label { color: var(--research); }
.lead { max-width: 780px; margin: 20px 0 0; font-size: 23px; line-height: 1.45; }
.intro-text { max-width: 800px; margin: 18px 0 0; color: var(--muted); font-size: 17px; }
.leadership-line { margin: 22px 0 0; font-size: 15px; }
.section { padding-block: 44px; }
.section-heading { margin-bottom: 24px; }
.split-section { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 64px; }
.section-intro { margin-top: 0; color: var(--muted); }
.ruled-section { border-top: 1px solid var(--line); }
.organization-band, .resources-band { background: var(--soft); }
.research-band { background: var(--research-soft); }

.exchange-diagram { max-width: 1040px; margin: 0 auto; }
.diagram-parent { position: relative; width: min(480px, 100%); margin: 0 auto 44px; padding: 20px 24px; text-align: center; color: #fff; background: var(--ink); }
.diagram-parent h3 { margin-bottom: 6px; font-size: 22px; }
.diagram-parent a { color: #fff; font-size: 14px; }
.diagram-parent::after { content: ""; position: absolute; height: 23px; border-left: 2px solid #9aa1a4; bottom: -23px; left: 50%; }
.diagram-branches { position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.diagram-branches::before { content: ""; position: absolute; top: -22px; left: calc(25% - 8px); right: calc(25% - 8px); height: 22px; border: 2px solid #9aa1a4; border-bottom: 0; }
.exchange-node { position: relative; display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-top: 4px solid var(--mit-red); background: #fff; }
.exchange-node::after { content: ""; position: absolute; height: 27px; border-left: 2px solid #9aa1a4; bottom: -27px; left: 50%; }
.research-node { border-top-color: var(--research); }
.exchange-node h3 { font-size: 24px; }
.exchange-node h3 a { color: var(--ink); text-decoration: none; }
.exchange-node h3 a:hover { text-decoration: underline; }
.exchange-node p { margin-bottom: 14px; }
.exchange-node ul { margin: 0 0 20px; color: var(--muted); font-size: 15px; }
.exchange-node .node-leadership { margin-top: auto; margin-bottom: 14px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14px; }
.text-link { font-weight: 700; font-size: 14px; }
.research-node .text-link { color: var(--research); }
.text-link span { margin-left: 6px; }
.shared-resources { margin-top: 26px; padding-top: 24px; border-top: 2px solid #9aa1a4; }
.shared-resources h3 { text-align: center; font-size: 20px; }
.shared-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin: 20px 0 0; }
.shared-grid dt { font-size: 15px; font-weight: 700; }
.shared-grid dd { margin: 5px 0 0; color: var(--muted); font-size: 14px; }

.news-list, .link-list { margin: 0; padding: 0; list-style: none; }
.news-list li, .link-list li { position: relative; margin: 0; padding: 16px 0 16px 20px; border-bottom: 1px solid var(--line); }
.news-list li:first-child, .link-list li:first-child { padding-top: 0; }
.news-list li::before, .link-list li::before { content: ""; position: absolute; left: 0; top: 26px; width: 6px; height: 6px; background: var(--mit-red); }
.news-list li:first-child::before, .link-list li:first-child::before { top: 10px; }
.news-list time { display: block; margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.news-list a, .link-list a { font-weight: 700; }
.news-list a { color: var(--ink); }
.link-list p { margin: 6px 0 0; color: var(--muted); font-size: 15px; }
.list-title { font-weight: 700; }
.list-caption { margin-bottom: 10px; font-size: 14px; font-weight: 700; }

.activity-list article { padding-block: 20px; border-bottom: 1px solid var(--line); }
.activity-list article:first-child { padding-top: 0; }
.activity-list h3 { margin-bottom: 8px; font-size: 20px; }
.activity-list p { margin: 0; color: var(--muted); }
.theme-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; list-style: none; margin: 24px 0 0; padding: 0; }
.theme-list li { margin: 0; padding: 18px 0; border-top: 3px solid var(--research); font-size: 20px; font-weight: 700; }
.additional-programs { margin-top: 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.additional-programs h3 { font-size: 18px; }
.additional-programs p { margin: 0; color: var(--muted); }
.community-list { display: flex; flex-wrap: wrap; gap: 6px 10px; list-style: none; margin: 0; padding: 0; font-size: 18px; font-weight: 700; }
.community-list li { margin: 0; }
.community-list li:not(:last-child)::after { content: ","; }
.leadership-list, .council-list { margin: 0; }
.leadership-list > article { display: grid; grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 24px; padding-block: 18px; border-top: 1px solid var(--line); }
.leadership-list img { display: block; width: 112px; height: 112px; object-fit: cover; }
.leadership-list h3 { margin: 0; font-size: 20px; }
.leadership-list p { margin: 5px 0 0; color: var(--muted); }
.leadership-list > article:first-child { padding-top: 0; border-top: 0; }
.council-list > div { display: grid; grid-template-columns: 175px minmax(0, 1fr); gap: 24px; padding-block: 18px; border-top: 1px solid var(--line); }
.council-list dt { font-weight: 700; }
.council-list dd { margin: 0; color: var(--muted); }
.people-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.person { scroll-margin-top: 24px; }
.person img { display: block; width: 112px; height: 112px; margin-bottom: 18px; object-fit: cover; object-position: center 30%; }
.person .person-role { margin-bottom: 8px; font-size: 13px; font-weight: 700; }
.person h3 { margin-bottom: 8px; }
.person p:not(.person-role) { min-height: 52px; margin-bottom: 10px; color: var(--muted); font-size: 15px; }
.person a { font-size: 15px; }

.site-footer { padding-block: 28px; color: #fff; background: var(--ink); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 12px 28px; font-size: 13px; }
.footer-inner p { margin: 0; }
.footer-inner a { color: #fff; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-credit { grid-column: 1 / -1; color: #c5c9cb; font-size: 12px; }

@media (max-width: 1120px) {
  .header-inner { grid-template-columns: 1fr auto; gap: 0 20px; }
  .nav { grid-row: 2; grid-column: 1 / -1; justify-content: flex-start; padding-bottom: 16px; }
  .mit-logo-link { grid-column: 2; grid-row: 1; }
}
@media (max-width: 820px) {
  .container { width: calc(100% - 40px); }
  h1 { font-size: 42px; }
  .split-section { grid-template-columns: 1fr; gap: 24px; }
  .exchange-node { padding: 20px; }
  .exchange-node h3 { font-size: 22px; }
  .shared-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .people-grid { grid-template-columns: 1fr; gap: 32px; }
  .person { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 0 24px; }
  .person img { grid-row: 1 / 5; margin: 0; }
  .person p:not(.person-role) { min-height: 0; }
}
@media (max-width: 600px) {
  h1 { font-size: 36px; }
  h2 { font-size: 26px; }
  .intro { padding-block: 34px; }
  .hero { align-items: center; height: min(360px, 42svh); min-height: 220px; }
  .hero-title-band { margin-top: 0; padding-block: 22px; }
  .hero .lead { font-size: 18px; }
  .lead { font-size: 20px; }
  .section { padding-block: 34px; }
  .header-inner { gap: 0 8px; }
  .brand { font-size: 18px; line-height: 1.3; }
  .nav { gap: 2px 20px; }
  .diagram-parent { margin-bottom: 24px; padding-inline: 18px; }
  .diagram-parent::after { height: 24px; bottom: -24px; }
  .diagram-branches { grid-template-columns: 1fr; gap: 16px; }
  .diagram-branches::before { display: none; }
  .exchange-node::after { display: none; }
  .shared-resources h3 { text-align: left; }
  .shared-grid { gap: 20px; }
  .theme-list { grid-template-columns: 1fr; }
  .council-list > div { grid-template-columns: 1fr; gap: 4px; }
  .footer-inner { grid-template-columns: 1fr; }
  .site-credit { grid-column: 1; }
}
@media (max-width: 380px) {
  .person { grid-template-columns: 88px minmax(0, 1fr); gap: 0 16px; }
  .person img { width: 88px; height: 88px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}