.library-main {
  max-width: 1400px;
  margin: 0 auto;
}

header nav a[aria-current="page"] {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 8px;
}

.library-intro {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  align-items: end;
  gap: 65px;
  padding: 72px 6% 50px;
}

.library-intro h1 {
  font-size: clamp(48px, 5.4vw, 76px);
  line-height: 1.04;
  margin: 18px 0 0;
}

.library-intro-note {
  max-width: 360px;
  padding-bottom: 5px;
}

.library-intro-note p {
  margin: 0 0 20px;
  font-size: 16px;
}

.map-library {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
  padding: 0 6%;
}

.library-map-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: #10262e;
  border: 1px solid #3b5155;
  border-radius: 5px;
  overflow: hidden;
}

.map-card-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 20px;
  padding: 19px 23px;
  border-bottom: 1px solid #3b5155;
}

.map-card-heading .eyebrow {
  font-size: 10px;
  letter-spacing: .12em;
}

.map-location {
  color: #a7bfb9;
  font-size: 10px;
}

.library-map-preview {
  margin: 0;
  background: #071a25;
}

.library-map-preview > a {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1.72;
  padding: 12px;
  overflow: hidden;
}

.library-map-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pangea-preview > a {
  background: #0c1c29;
}

.library-map-preview figcaption {
  min-height: 43px;
  padding: 12px 23px;
  border-block: 1px solid #30494f;
  color: #bbc9bd;
  font-size: 10px;
  line-height: 1.6;
}

.library-map-preview figcaption a {
  text-decoration-color: #72877b;
  text-underline-offset: 3px;
}

.map-card-copy {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 27px 27px 24px;
}

.map-card-copy h2 {
  font-size: clamp(30px, 3vw, 40px);
  line-height: 1.08;
  margin: 0 0 15px;
}

.map-card-copy > p:first-of-type {
  margin: 0 0 25px;
  font-size: 14px;
  line-height: 1.8;
}

.map-primary {
  width: 100%;
  max-width: 330px;
  min-height: 54px;
}

.map-secondary-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  margin: 16px 0 18px;
}

.map-secondary-links a {
  display: inline-block;
  padding-block: 7px;
  color: var(--accent);
  font-size: 12px;
  line-height: 1.65;
}

.map-card-copy .viewer-instruction {
  max-width: 360px;
  margin: 12px 0 0;
  color: #b8cac6;
  font-size: 12px;
  line-height: 1.75;
}

.viewer-instruction strong {
  color: var(--ink);
  font-weight: 500;
}

.map-card-copy .map-scope {
  width: 100%;
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 1px solid #30494f;
  color: #9cb5b5;
  font-size: 11px;
  line-height: 1.8;
}

.research-context {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  align-items: center;
  gap: 22px;
  margin: 30px 6% 0;
  padding: 25px 28px;
  border-left: 2px solid var(--gold);
  background: #162e32;
}

.context-mark {
  align-self: start;
  color: var(--gold);
  font-size: 30px;
  line-height: 1;
}

.research-context h2 {
  font-size: 27px;
  margin: 0 0 7px;
}

.research-context p {
  max-width: 660px;
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
}

.research-context > a {
  white-space: nowrap;
  font-size: 12px;
}

.library-sources {
  padding: 75px 6% 55px;
}

.library-sources .section-heading {
  align-items: end;
  gap: 35px;
  margin-bottom: 30px;
}

.library-sources .section-heading h2 {
  font-size: clamp(34px, 4vw, 48px);
  margin-bottom: 0;
}

.library-sources .section-heading > p {
  max-width: 280px;
  margin-bottom: 3px;
  font-size: 13px;
}

.library-source-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 35px;
}

.library-source {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 27px 0;
  border-top: 1px solid var(--line);
}

.source-kind {
  color: var(--gold);
  font-size: 9px;
  letter-spacing: .1em;
  line-height: 1.8;
}

.library-source h3 {
  font-size: 28px;
  line-height: 1.15;
  margin: 13px 0 10px;
}

.library-source p {
  margin: 0 0 15px;
  font-size: 13px;
  line-height: 1.8;
}

.library-source > a {
  display: inline-block;
  margin-top: auto;
  padding-block: 8px;
  color: var(--accent);
  font-size: 12px;
  line-height: 1.6;
}

.source-note {
  max-width: 780px;
  margin: 18px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.library-return {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 35px;
  padding: 45px 6% 55px;
  border-top: 1px solid var(--line);
}

.library-return h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 3.6vw, 45px);
}

.library-return-links {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 22px;
}

.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;
}

#tharp-map, #pangea-map, #primary-sources {
  scroll-margin-top: 115px;
}

@media (max-width: 950px) {
  .library-intro {
    gap: 35px;
    padding-top: 55px;
  }
  .map-library { gap: 18px; }
  .map-card-heading { padding-inline: 20px; }
  .map-card-copy { padding: 24px 20px; }
  .library-map-preview figcaption { padding-inline: 20px; }
  .research-context { grid-template-columns: 25px 1fr; }
  .research-context > a { grid-column: 2; }
  .library-source-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .library-intro {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 40px 6% 33px;
  }
  .library-intro h1 { font-size: clamp(44px, 8.5vw, 58px); }
  .library-intro-note { max-width: 450px; }
  .library-intro-note p { font-size: 15px; margin-bottom: 13px; }
  .map-library { grid-template-columns: 1fr; gap: 25px; }
  .map-card-heading { padding-block: 15px; }
  .map-card-copy h2 { font-size: 35px; }
  .map-primary { max-width: none; }
  .research-context { margin-top: 25px; padding: 23px 20px; gap: 12px 15px; }
  .research-context h2 { font-size: 26px; }
  .research-context p { font-size: 12px; }
  .library-sources { padding-top: 50px; padding-bottom: 35px; }
  .library-sources .section-heading > p { max-width: none; margin-top: 18px; }
  .library-source-grid { grid-template-columns: 1fr; }
  .library-source { padding-block: 23px; }
  .library-return { align-items: flex-start; flex-direction: column; padding-block: 35px 45px; }
  .library-return-links { width: 100%; }
  .library-return-links .primary { width: 100%; }
  #tharp-map, #pangea-map, #primary-sources { scroll-margin-top: 145px; }
}

@media (max-width: 360px) {
  header nav { gap: 7px; font-size: 11px; }
  header nav a:last-child { padding-inline: 9px; }
  .map-card-copy h2 { font-size: 31px; }
  .library-map-preview > a { padding: 8px; }
}

.library-demo{margin:0 6% 30px;padding:27px 30px;display:flex;justify-content:space-between;align-items:center;gap:30px;border:1px solid #4c6c61;border-radius:5px;background:#16312f}.library-demo h2{font-size:34px;line-height:1.1;margin:11px 0}.library-demo p{font-size:13px;line-height:1.8;max-width:630px;margin:0}.library-demo>.primary{font-size:12px;flex-shrink:0;min-height:48px}@media(max-width:900px){.library-demo{align-items:flex-start;flex-direction:column;gap:22px;padding:25px}.library-demo h2{font-size:31px}}