:root {
  --library-teal: #087f83;
  --library-teal-dark: #075f63;
  --library-ink: #17242b;
  --library-rule: #b9d9d7;
}
.site-masthead {
  box-sizing: border-box;
  width: 100%;
  background:
    linear-gradient(rgba(248, 251, 252, 0.90), rgba(248, 251, 252, 0.90)),
    url('/assets/cog.png') 0 0 / 25px 25px repeat;
  border-bottom: 3px solid var(--library-teal);
  color: var(--library-ink);
}
.site-masthead-inner {
  box-sizing: border-box;
  width: min(100%, 1560px);
  min-height: 118px;
  margin: 0 auto;
  padding: 20px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand-lockup { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; flex: 0 0 auto; }
.brand-lockup .logo { display: block; line-height: 0; }
.brand-lockup .logo img { display: block; width: 162px; height: auto; }
.brand-lockup .logo-sub {
  display: block;
  align-self: flex-end;
  width: 65%;
  margin: 0 2px 0 0;
  color: var(--library-teal-dark);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-align: center;
  text-transform: uppercase;
  white-space: nowrap;
}
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: 7px 15px; flex-wrap: wrap; }
.site-nav a,
.site-nav button {
  box-sizing: border-box;
  border: 0;
  background: transparent;
  color: var(--library-ink);
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav button:hover,
.site-nav button:focus-visible,
.site-nav .is-active { color: var(--library-teal-dark); text-decoration: underline; text-underline-offset: 4px; }
.site-nav .search-trigger,
.site-nav .course-link {
  min-height: 42px;
  padding: 11px 18px;
  border-radius: 999px;
  text-decoration: none;
}
.site-nav .search-trigger { border: 1px solid var(--library-teal); background: #fff; color: var(--library-teal-dark); }
.site-nav .course-link { background: var(--library-teal); color: #fff; }
.site-nav .course-link:hover,
.site-nav .course-link:focus-visible { background: var(--library-teal-dark); color: #fff; text-decoration: none; }
.site-footer {
  box-sizing: border-box;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid #d7e3e8;
  background: #fff;
  color: #40545c;
  text-align: center;
}
.site-footer p {
  box-sizing: border-box;
  max-width: 1220px;
  margin: 0 auto;
  padding: 22px 32px;
  text-align: center;
}
body,
body > main { background: #fff; }
body.library-landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body.library-landing > main { flex: 1 0 auto; }
body.library-landing > .compact-artifact {
  box-sizing: border-box;
  height: 154px;
  flex: 0 0 154px;
  border-bottom: 1px solid #d7e3e8;
  background: linear-gradient(90deg, #eef7f9, #fff 74%);
}
body.library-landing > .compact-artifact .compact-artifact-inner {
  box-sizing: border-box;
  width: 100%;
  max-width: 1220px;
  height: 154px;
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  align-items: center;
  gap: 32px;
  justify-content: space-between;
}
body.library-landing .landing-hero-copy {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 760px;
}
body.library-landing .landing-hero-actions {
  flex: 0 1 24rem;
  width: clamp(16rem, 28vw, 24rem);
}
body.library-landing .landing-hero-actions .search-box {
  box-sizing: border-box;
  width: 100%;
  min-height: 42px;
  margin: 0;
  padding: 9px 12px;
  border: 1px solid var(--library-teal);
  border-radius: 6px;
  background: #fff;
  color: var(--library-ink);
  font: inherit;
}
body.library-landing > .compact-artifact h1,
body.reference-library-index.library-landing .reference-library-hero h1 {
  margin: 0;
  color: var(--library-ink);
  font-size: clamp(30px, 3.5vw, 48px);
  letter-spacing: 0;
  line-height: 1.05;
}
body.library-landing > .compact-artifact .lede,
body.reference-library-index.library-landing .reference-library-hero > p {
  max-width: 760px;
  margin: 10px 0 0;
  color: #263841;
  font-size: 18px;
  line-height: 1.3;
}
body.reference-library-index.library-landing { overflow-x: hidden; }
body.reference-library-index.library-landing .reference-library-page { padding-top: 0; }
body.reference-library-index.library-landing .reference-library-hero {
  box-sizing: border-box;
  position: relative;
  left: 50%;
  width: 100vw;
  min-height: 154px;
  margin: 0 0 34px -50vw;
  padding: 22px max(32px, calc((100vw - 1220px) / 2 + 32px));
  display: block;
  border-bottom: 1px solid #d7e3e8;
  background: linear-gradient(90deg, #eef7f9, #fff 74%);
}
body.reference-library-index.library-landing .reference-library-actions {
  position: absolute;
  top: 50%;
  right: max(32px, calc((100vw - 1220px) / 2 + 32px));
  margin: 0;
  transform: translateY(-50%);
}
@media (max-width: 960px) {
  body.library-landing > .compact-artifact {
    height: auto;
    min-height: 154px;
    flex-basis: auto;
  }
  body.library-landing > .compact-artifact .compact-artifact-inner {
    height: auto;
    min-height: 154px;
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
    justify-content: center;
  }
  body.library-landing .landing-hero-actions {
    flex: none;
    width: min(100%, 34rem);
  }
  body.reference-library-index.library-landing .reference-library-hero { min-height: 154px; }
  body.reference-library-index.library-landing .reference-library-actions {
    position: static;
    margin-top: 18px;
    transform: none;
  }
  .site-masthead-inner { align-items: flex-start; flex-direction: column; padding: 17px 20px; }
  .site-nav { justify-content: flex-start; }
}
@media (max-width: 620px) {
  .brand-lockup .logo img { width: 142px; }
  .brand-lockup .logo-sub { font-size: 14px; }
  .site-nav { gap: 8px 13px; }
}