:root {
  --petroleum: #1e4d50;
  --petroleum-strong: #163b3d;
  --sage: #93aa9b;
  --sand: #eee7dc;
  --off-white: #faf8f4;
  --paper: #fffdf9;
  --graphite: #263335;
  --muted: #657473;
  --line: #d8ddd7;
  --coral: #c98272;
  font-family: "Manrope", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--graphite);
  background: var(--off-white);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--off-white);
}

a {
  color: var(--petroleum);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(201, 130, 114, 0.5);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #fff;
  background: var(--petroleum);
  border-radius: 6px;
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  background: rgba(250, 248, 244, 0.97);
  border-bottom: 1px solid var(--line);
}

.header-inner,
.content-width,
.footer-inner {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.site-logo {
  display: block;
  width: 178px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.site-nav a {
  padding: 9px 10px;
  color: var(--graphite);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--petroleum);
  background: #e8eee9;
}

.site-nav .access-link {
  margin-left: 4px;
  color: #fff;
  background: var(--petroleum);
}

.site-nav .access-link:hover {
  color: #fff;
  background: var(--petroleum-strong);
}

.institutional-intro {
  color: #fff;
  background: var(--petroleum);
}

.institutional-intro .content-width {
  display: grid;
  align-content: center;
  min-height: min(520px, calc(100vh - 76px));
  padding-block: 72px 82px;
}

.institutional-intro .eyebrow,
.document-intro .eyebrow {
  margin: 0 0 12px;
  color: var(--sage);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.institutional-intro h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 8vw, 86px);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: 0;
}

.institutional-intro .lead {
  max-width: 760px;
  margin: 24px 0 0;
  color: #edf2ed;
  font-size: clamp(18px, 2.3vw, 24px);
  line-height: 1.55;
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  color: var(--petroleum);
  background: var(--sand);
  border: 1px solid var(--sand);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.button-link.secondary {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.5);
}

.button-link:hover {
  background: #fff;
}

.button-link.secondary:hover {
  color: var(--petroleum);
}

.content-band {
  padding-block: 64px;
  border-bottom: 1px solid var(--line);
}

.content-band.alt {
  background: var(--paper);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) minmax(0, 1.25fr);
  gap: 32px;
  align-items: start;
  margin-bottom: 38px;
}

.section-heading h2,
.document-intro h1,
.document-body h2,
.support-block h2 {
  margin: 0;
  color: var(--petroleum-strong);
  letter-spacing: 0;
}

.section-heading h2 {
  font-size: 30px;
  line-height: 1.18;
}

.section-heading p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.capability-item {
  padding-top: 18px;
  border-top: 3px solid var(--sage);
}

.capability-item:nth-child(2) {
  border-color: var(--coral);
}

.capability-item h3 {
  margin: 0 0 10px;
  color: var(--graphite);
  font-size: 17px;
}

.capability-item p,
.data-use-list li,
.document-body p,
.document-body li,
.support-block p {
  color: #47585a;
  line-height: 1.75;
}

.capability-item p {
  margin: 0;
  font-size: 14px;
}

.data-use-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 36px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.data-use-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.data-use-list strong {
  display: block;
  margin-bottom: 5px;
  color: var(--petroleum-strong);
}

.document-intro {
  padding-block: 62px 44px;
  background: var(--sand);
  border-bottom: 1px solid var(--line);
}

.document-intro h1 {
  max-width: 820px;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.05;
}

.document-intro .summary {
  max-width: 780px;
  margin: 20px 0 0;
  color: #526260;
  font-size: 17px;
  line-height: 1.7;
}

.update-note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.document-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 48px;
  padding-block: 52px 72px;
}

.document-nav {
  position: sticky;
  top: 104px;
  align-self: start;
  padding-right: 24px;
  border-right: 1px solid var(--line);
}

.document-nav strong {
  display: block;
  margin-bottom: 12px;
  color: var(--petroleum-strong);
  font-size: 13px;
}

.document-nav a {
  display: block;
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.document-nav a:hover {
  color: var(--petroleum);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.document-body {
  min-width: 0;
}

.document-body section + section {
  margin-top: 44px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.document-body h2,
.support-block h2 {
  font-size: 24px;
  line-height: 1.25;
}

.document-body h3 {
  margin: 28px 0 8px;
  color: var(--graphite);
  font-size: 16px;
}

.document-body p,
.document-body li {
  font-size: 15px;
}

.document-body p {
  margin: 14px 0 0;
}

.document-body ul {
  margin: 14px 0 0;
  padding-left: 22px;
}

.document-body li + li {
  margin-top: 8px;
}

.notice {
  margin-top: 22px;
  padding: 18px 20px;
  background: #edf1ec;
  border-left: 4px solid var(--sage);
}

.notice strong {
  color: var(--petroleum-strong);
}

.support-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 42px;
  padding-block: 52px 72px;
}

.support-block {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.support-block:nth-child(-n + 2) {
  border-top: 1px solid var(--line);
}

.support-block p {
  margin: 12px 0 0;
  font-size: 15px;
}

.contact-address {
  display: inline-block;
  margin-top: 16px;
  font-style: normal;
  font-weight: 800;
}

.site-footer {
  color: #e9eeea;
  background: var(--petroleum-strong);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding-block: 34px;
}

.footer-logo {
  display: block;
  width: 150px;
  height: auto;
}

.footer-copy p {
  margin: 10px 0 0;
  color: #cad6cf;
  font-size: 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
}

.footer-links a {
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 800px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-block: 14px;
  }

  .site-header {
    position: static;
  }

  .site-logo {
    width: 155px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-nav a {
    padding: 7px 8px;
  }

  .institutional-intro .content-width {
    min-height: auto;
    padding-block: 58px 64px;
  }

  .section-heading,
  .document-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .capability-grid,
  .data-use-list,
  .support-layout {
    grid-template-columns: 1fr;
  }

  .document-layout {
    gap: 34px;
  }

  .document-nav {
    position: static;
    padding: 0 0 20px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .document-nav a {
    display: inline-block;
    margin-right: 14px;
  }

  .support-block:nth-child(2) {
    border-top: 0;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .header-inner,
  .content-width,
  .footer-inner {
    width: min(100% - 28px, 1120px);
  }

  .site-nav {
    width: 100%;
  }

  .site-nav .access-link {
    width: 100%;
    margin: 4px 0 0;
    text-align: center;
  }

  .content-band {
    padding-block: 48px;
  }

  .section-heading {
    gap: 18px;
  }

  .document-intro {
    padding-block: 48px 36px;
  }

  .document-layout,
  .support-layout {
    padding-block: 38px 56px;
  }
}

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