:root {
  --navy: #0b2632;
  --navy-2: #102f3d;
  --blue: #145a72;
  --blue-2: #237b98;
  --pale: #eaf2f6;
  --paper: #f7f9fc;
  --white: #fff;
  --ink: #17313d;
  --muted: #5e7078;
  --gold: #e5a445;
  --line: #d9e3e8;
  --radius: 10px;
  --shadow: 0 14px 38px rgba(10,38,50,.1);
  --max: 1180px;
  --header: 78px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height: 1.65;
}

h1, h2, h3, h4, p {
  margin-top: 0;
}

h1, h2, h3, h4 {
  line-height: 1.15;
  color: var(--navy);
}

h1 {
  font-family: Georgia,serif;
  font-size: clamp(2.65rem,5.5vw,5.25rem);
  font-weight: 500;
  letter-spacing: -.045em;
  margin-bottom: 24px;
}

h1 em {
  color: var(--blue-2);
  font-style: normal;
}

h2 {
  font-family: Georgia,serif;
  font-size: clamp(2rem,4vw,3.35rem);
  font-weight: 500;
  letter-spacing: -.03em;
  margin-bottom: 0;
}

h3 {
  font-size: 1.25rem;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(calc(100% - 40px),var(--max));
  margin-inline: auto;
}

.narrow {
  max-width: 960px;
}

.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;
  top: 10px;
  left: 10px;
  padding: 10px 15px;
  background: #fff;
  color: #000;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.site-header {
  height: var(--header);
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid transparent;
  transition: .25s;
}

.site-header.scrolled {
  border-color: var(--line);
  box-shadow: 0 5px 20px rgba(10,38,50,.06);
}

.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-right: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--navy);
  color: #fff;
  font-family: Georgia,serif;
  font-size: 1.4rem;
  border-radius: 4px 12px 4px 4px;
}

.brand strong, .brand small {
  display: block;
  line-height: 1.05;
}

.brand strong {
  font-family: Georgia,serif;
  font-size: 1.2rem;
}

.brand small {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .55rem;
  color: var(--muted);
  margin-top: 5px;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 25px;
}

.site-header nav a {
  font-size: .88rem;
  font-weight: 650;
  position: relative;
}

.site-header nav a:after {
  content: "";
  position: absolute;
  height: 2px;
  left: 0;
  right: 100%;
  bottom: -9px;
  background: var(--gold);
  transition: .25s;
}

.site-header nav a:hover:after, .site-header nav a.active:after {
  right: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 14px 21px;
  background: var(--blue);
  color: #fff;
  border: 1px solid var(--blue);
  font-weight: 700;
  font-size: .9rem;
  border-radius: 4px;
  transition: .2s;
}

.button:hover {
  background: var(--navy);
  border-color: var(--navy);
  transform: translateY(-2px);
}

.button-small {
  padding: 10px 16px;
}

.button-ghost {
  color: var(--navy);
  background: transparent;
  border-color: #9eb2ba;
}

.button-ghost:hover {
  color: #fff;
}

.menu-toggle {
  display: none;
  border: 0;
  background: none;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--navy);
  margin: 5px;
}

.hero {
  background: linear-gradient(115deg,#f8fbfc 55%,#e7f0f4);
  position: relative;
  overflow: hidden;
  padding: 86px 0 92px;
}

.hero:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(20,90,114,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(20,90,114,.04) 1px,transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to right,transparent,black);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr .75fr;
  align-items: center;
  gap: 80px;
  position: relative;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .72rem;
  font-weight: 800;
  color: var(--blue);
  margin-bottom: 17px;
}

.eyebrow span {
  color: var(--gold);
  padding: 0 5px;
}

.lead {
  font-size: 1.12rem;
  color: #4e646e;
  max-width: 720px;
}

.hero-copy .lead {
  max-width: 710px;
}

.button-row {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.feature-card {
  background: rgba(255,255,255,.95);
  padding: 32px;
  border: 1px solid #cadbe2;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  transform: rotate(1deg);
}

.card-top, .research-head, .path-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.icon-box {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--pale);
  color: var(--blue);
  font-size: 1.5rem;
}

.feature-card h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.feature-card>p {
  font-size: .9rem;
  color: var(--muted);
}

.integrity-flow {
  list-style: none;
  margin: 25px 0 0;
  padding: 0;
}

.integrity-flow li {
  display: flex;
  gap: 16px;
  position: relative;
  padding: 0 0 17px;
}

.integrity-flow li:not(:last-child):after {
  content: "";
  position: absolute;
  left: 14px;
  top: 30px;
  bottom: 0;
  border-left: 1px dashed #9db5bf;
}

.integrity-flow b {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-size: .65rem;
}

.integrity-flow strong, .integrity-flow small {
  display: block;
}

.integrity-flow small {
  color: var(--muted);
  font-size: .75rem;
}

.stats {
  background: var(--navy);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  padding: 27px 0;
}

.stats-grid div {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-right: 1px solid rgba(255,255,255,.14);
}

.stats-grid div:last-child {
  border: 0;
}

.stats-grid strong {
  font: 500 2rem Georgia,serif;
  color: var(--gold);
}

.stats-grid span {
  font-size: .77rem;
  max-width: 90px;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.section {
  padding: 105px 0;
}

.section-tint {
  background: var(--paper);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 50px;
  margin-bottom: 46px;
}

.section-heading>div {
  max-width: 730px;
}

.section-heading>p {
  max-width: 400px;
  color: var(--muted);
  margin: 0;
}

.learning-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.topic-card {
  position: relative;
  padding: 33px;
  background: #fff;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: .25s;
}

.topic-card:hover {
  z-index: 2;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.topic-no {
  position: absolute;
  right: 23px;
  top: 22px;
  font-family: Georgia,serif;
  color: #a5b5bb;
}

.topic-icon {
  font-size: 1.5rem;
  color: var(--blue);
  width: 45px;
  height: 45px;
  display: grid;
  place-items: center;
  background: var(--pale);
  margin-bottom: 25px;
}

.topic-card p {
  font-size: .9rem;
  color: var(--muted);
  min-height: 86px;
}

.topic-card ul {
  list-style: none;
  padding: 15px 0;
  margin: 0 0 22px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.topic-card li {
  font-size: .76rem;
}

.topic-card li:before {
  content: "·";
  color: var(--gold);
  margin-right: 6px;
  font-weight: 900;
}

.topic-card a, .orcid, .path-card>a {
  color: var(--blue);
  font-weight: 750;
  font-size: .82rem;
}

.section-dark {
  background: var(--navy);
  color: #d6e1e5;
}

.section-dark h2, .section-dark h3 {
  color: #fff;
}

.light>p {
  color: #acc0c8;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 18px;
  align-items: start;
}

.path-card {
  background: var(--navy-2);
  padding: 30px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
}

.path-card.featured {
  border-top: 3px solid var(--gold);
}

.path-meta span {
  color: var(--gold);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .15em;
}

.path-meta b {
  font-size: .66rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  background: rgba(255,255,255,.08);
  padding: 5px 8px;
}

.path-card h3 {
  font-family: Georgia,serif;
  font-size: 1.55rem;
  margin: 23px 0 13px;
}

.path-card p {
  color: #b6c7ce;
  font-size: .88rem;
  min-height: 83px;
}

.path-card ol {
  list-style: none;
  padding: 0;
  margin: 25px 0;
}

.path-card li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
  font-size: .84rem;
}

.path-card li span {
  color: #7895a0;
  margin-right: 12px;
}

.path-card>a {
  color: #f2bb65;
}

.lesson {
  display: grid;
  grid-template-columns: 75px 1fr;
  gap: 26px;
  padding: 45px 0;
  border-top: 1px solid var(--line);
}

.lesson-index {
  font: 500 2rem Georgia,serif;
  color: #9db2bb;
}

.lesson h3 {
  font: 500 1.75rem Georgia,serif;
}

.lesson>div>p {
  color: #4e646d;
}

.callout {
  border-left: 3px solid var(--blue);
  padding: 17px 20px;
  margin-top: 25px;
  background: var(--pale);
}

.callout.gold {
  border-color: var(--gold);
  background: #fff8ec;
}

.callout.question {
  border-color: #6b63a5;
  background: #f4f2fb;
}

.callout b {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .68rem;
  color: var(--blue);
}

.callout p {
  margin: 5px 0 0;
  font-size: .87rem;
}

.notice {
  padding: 17px 20px;
  border-left: 3px solid var(--gold);
  background: #fff;
  font-size: .83rem;
  margin-bottom: 25px;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 18px;
}

.research-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 27px;
  display: flex;
  flex-direction: column;
}

.avatar {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 50%;
  font: 500 1rem Georgia,serif;
}

.country {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  background: var(--pale);
  padding: 5px 8px;
}

.research-card h3 {
  font-family: Georgia,serif;
  font-size: 1.4rem;
  margin: 20px 0 4px;
}

.university {
  font-size: .78rem;
  color: var(--blue);
  font-weight: 700;
  min-height: 41px;
}

.research-card>p:not(.university) {
  color: var(--muted);
  font-size: .85rem;
  min-height: 64px;
}

.research-card dl {
  font-size: .76rem;
  margin: 10px 0 20px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.research-card dt {
  color: var(--muted);
  margin-top: 8px;
}

.research-card dd {
  margin: 1px 0;
  overflow-wrap: anywhere;
}

.orcid {
  margin-top: auto;
}

.info {
  position: relative;
  border: 1px solid #9eb0b7;
  border-radius: 50%;
  background: #fff;
  width: 17px;
  height: 17px;
  padding: 0;
  font-size: .65rem;
  cursor: help;
}

.info:after {
  content: attr(data-tooltip);
  position: absolute;
  left: 24px;
  bottom: 0;
  width: 220px;
  padding: 9px;
  background: var(--navy);
  color: #fff;
  border-radius: 5px;
  text-align: left;
  opacity: 0;
  visibility: hidden;
  transition: .2s;
  z-index: 3;
}

.info:hover:after, .info:focus:after {
  opacity: 1;
  visibility: visible;
}

.library-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.library-grid details {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
}

.library-grid summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 25px;
  display: flex;
  align-items: center;
  font-weight: 750;
  color: var(--navy);
}

.library-grid summary::-webkit-details-marker {
  display: none;
}

.library-grid summary span {
  color: var(--blue);
  font: 500 .8rem Georgia,serif;
  margin-right: 15px;
}

.library-grid summary i {
  font-style: normal;
  margin-left: auto;
  font-size: 1.4rem;
  color: var(--blue);
  transition: .2s;
}

.library-grid details[open] summary i {
  transform: rotate(45deg);
}

.library-grid details p {
  padding: 0 25px 22px 55px;
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
}

.glossary {
  background: var(--pale);
}

.glossary-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
}

.glossary-head>div {
  max-width: 600px;
}

.search {
  width: min(100%,410px);
  height: 53px;
  background: #fff;
  border: 1px solid #b9cbd2;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 10px;
  border-radius: 5px;
}

.search input {
  font: inherit;
  border: 0;
  outline: 0;
  flex: 1;
  min-width: 0;
}

.search kbd {
  border: 1px solid var(--line);
  padding: 1px 7px;
  border-radius: 4px;
  color: var(--muted);
}

.result-status {
  font-size: .76rem;
  color: var(--muted);
  margin: 30px 0 12px;
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  border-top: 1px solid #c8d8df;
  border-left: 1px solid #c8d8df;
}

.glossary-grid article {
  padding: 22px;
  background: rgba(255,255,255,.55);
  border-right: 1px solid #c8d8df;
  border-bottom: 1px solid #c8d8df;
}

.glossary-grid h3 {
  font: 500 1.18rem Georgia,serif;
  margin-bottom: 8px;
}

.glossary-grid p {
  font-size: .82rem;
  color: var(--muted);
  margin: 0;
}

.glossary-grid article[hidden] {
  display: none;
}

.no-results {
  padding: 30px;
  text-align: center;
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
}

.principles>h3 {
  font: 500 1.7rem Georgia,serif;
  border-bottom: 2px solid var(--navy);
  padding-bottom: 15px;
}

.principles article {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 15px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.principles article>b {
  color: var(--gold);
  font: 500 .8rem Georgia,serif;
}

.principles h4 {
  margin-bottom: 4px;
}

.principles p {
  color: var(--muted);
  font-size: .83rem;
  margin: 0;
}

.disclaimer {
  background: #e9edf0;
  padding: 24px 0;
}

.disclaimer .container {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 35px;
}

.disclaimer strong {
  font-family: Georgia,serif;
}

.disclaimer p {
  margin: 0;
  font-size: .78rem;
  color: var(--muted);
}

footer {
  background: #071c25;
  color: #aec0c7;
  padding: 65px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
}

.footer-brand .brand {
  color: #fff;
}

.footer-brand .brand-mark {
  background: var(--gold);
  color: var(--navy);
}

.footer-brand .brand small {
  color: #91a6ae;
}

.footer-brand p {
  font-size: .82rem;
  margin-top: 20px;
}

.footer-grid h3 {
  color: #fff;
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .13em;
  margin-bottom: 18px;
}

.footer-grid>div>a:not(.brand) {
  display: block;
  font-size: .78rem;
  margin: 9px 0;
}

.footer-grid>div>a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 20px;
  margin-top: 50px;
  font-size: .72rem;
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: var(--gold);
  color: var(--navy);
  font-size: 1.2rem;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: .2s;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease,transform .6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: none;
}

@media (max-width:1024px) {
  .site-header nav {
    gap: 14px;
  }

  .site-header nav a {
    font-size: .78rem;
  }

  .header-cta {
    display: none;
  }

  .hero-grid {
    gap: 35px;
  }

  .learning-grid, .research-grid {
    grid-template-columns: repeat(2,1fr);
  }

  .path-grid {
    grid-template-columns: 1fr;
  }

  .path-card p {
    min-height: 0;
  }

  .about-grid {
    gap: 50px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }

}

@media (max-width:767px) {
  :root {
    --header: 68px;
  }

  .container {
    width: min(calc(100% - 28px),var(--max));
  }

  .menu-toggle {
    display: block;
    z-index: 2;
  }

  .menu-toggle[aria-expanded=true] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded=true] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded=true] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .menu-toggle span {
    transition: .2s;
  }

  .site-header nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 25px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-130%);
    transition: .25s;
    z-index: -1;
  }

  .site-header nav.open {
    transform: none;
  }

  .site-header nav a {
    font-size: .95rem;
    padding: 12px;
  }

  .site-header nav a:after {
    display: none;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2.5rem,12vw,3.8rem);
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .feature-card {
    transform: none;
    padding: 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-grid div {
    justify-content: flex-start;
    padding: 12px 10px;
    border-bottom: 1px solid rgba(255,255,255,.12);
  }

  .stats-grid div:nth-child(2) {
    border-right: 0;
  }

  .section {
    padding: 75px 0;
  }

  .section-heading, .glossary-head {
    display: block;
  }

  .section-heading>p {
    margin-top: 18px;
  }

  .learning-grid, .research-grid, .library-grid, .glossary-grid {
    grid-template-columns: 1fr;
  }

  .topic-card p, .research-card>p:not(.university) {
    min-height: 0;
  }

  .lesson {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .lesson-index {
    font-size: 1rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .search {
    margin-top: 25px;
  }

  .disclaimer .container {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1/-1;
  }

  .footer-bottom {
    display: block;
  }

  .footer-bottom span {
    display: block;
    margin: 5px 0;
  }

}

@media (prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *:before, *:after {
    animation-duration: .01ms!important;
    transition-duration: .01ms!important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

}