/* Navin-branded Introducing page: preserve the dark editorial fieldwork shell while using an article reading structure. */
.content-about-preserved .content-field {
  background-image: url("/assets/field-2.webp");
  background-position: center;
  filter: saturate(1.04) contrast(1.06);
}

.content-about-preserved .content-field::after {
  background:
    linear-gradient(180deg, rgba(1, 12, 8, .58), rgba(1, 12, 8, .9) 44rem),
    linear-gradient(90deg, rgba(1, 12, 8, .94), rgba(1, 12, 8, .72) 58%, rgba(1, 12, 8, .84));
}

.content-about-preserved .route-page__shell {
  width: min(calc(100% - (var(--edge) + var(--edge))), 96rem);
}

.preserved-main {
  width: 100%;
  padding: clamp(4.5rem, 9vw, 8rem) 0 clamp(6rem, 12vw, 11rem);
}

.preserved-article__header {
  max-width: 58rem;
  margin: 0 auto;
  text-align: center;
}

.preserved-article__category {
  margin: 0;
  color: var(--route-accent);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.preserved-article__header h1 {
  max-width: 16ch;
  margin: 1.25rem auto 1.1rem;
  font-size: clamp(3.3rem, 7.4vw, 6.8rem);
  font-weight: 400;
  letter-spacing: -.065em;
  line-height: .88;
  text-wrap: balance;
}

.preserved-article__subtitle {
  max-width: 34rem;
  margin: 0 auto;
  color: var(--route-muted);
  font-size: clamp(1.15rem, 1.9vw, 1.55rem);
  line-height: 1.4;
}

.preserved-hero {
  width: min(100%, 65.5rem);
  margin: clamp(3.25rem, 7vw, 6.5rem) auto 0;
  border: 1px solid var(--route-line);
  background: rgba(3, 18, 13, .58);
}

.preserved-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1672 / 941;
  object-fit: cover;
}

.preserved-reading-layout {
  display: grid;
  grid-template-columns: minmax(12rem, .38fr) minmax(0, 1fr);
  gap: clamp(3rem, 8vw, 9rem);
  width: min(100%, 72rem);
  margin: clamp(4rem, 8vw, 8rem) auto 0;
  align-items: start;
}

.preserved-toc {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  max-height: calc(100svh - 3rem);
  overflow: auto;
  border-top: 1px solid var(--route-line);
}

.preserved-toc > p {
  margin: 0;
  padding: 1rem 0;
  color: var(--route-muted);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.preserved-toc nav {
  display: grid;
}

.preserved-toc a {
  display: flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  border-top: 1px solid var(--route-line);
  color: var(--route-muted);
  font-size: .92rem;
  line-height: 1.25;
}

.preserved-toc a::after {
  content: "↗";
  flex: 0 0 auto;
  color: var(--route-accent);
}

.preserved-toc a:hover,
.preserved-toc a:focus-visible {
  color: var(--route-accent);
}

.preserved-prose {
  min-width: 0;
  max-width: 48rem;
}

.preserved-prose__opening {
  margin: 0 0 clamp(3.25rem, 7vw, 6rem);
  color: var(--route-text);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  line-height: 1.48;
}

.preserved-prose__section {
  padding: clamp(2.75rem, 5vw, 5rem) 0;
  border-top: 1px solid var(--route-line);
  scroll-margin-top: 6rem;
}

.preserved-prose__section h2 {
  max-width: 15ch;
  margin: 0 0 1.6rem;
  color: var(--route-text);
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 400;
  letter-spacing: -.05em;
  line-height: .98;
  scroll-margin-top: 6rem;
  text-wrap: balance;
}

.preserved-prose__section p {
  max-width: 62ch;
  margin: 0;
  color: var(--route-muted);
  font-size: clamp(1.05rem, 1.35vw, 1.2rem);
  line-height: 1.68;
}

.preserved-prose__section p + p {
  margin-top: 1.2rem;
}

.preserved-prose__links,
.preserved-contact {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  margin-top: 2rem;
  padding-top: .9rem;
  border-top: 1px solid var(--route-line);
}

.preserved-prose__links a,
.preserved-contact a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: .7rem;
  color: var(--route-accent);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.preserved-prose__links a:hover,
.preserved-prose__links a:focus-visible,
.preserved-contact a:hover,
.preserved-contact a:focus-visible {
  color: var(--route-text);
}

.preserved-related {
  width: min(100%, 72rem);
  margin: clamp(4rem, 9vw, 9rem) auto 0;
  border-top: 1px solid var(--route-line);
}

.preserved-related > header {
  padding: clamp(2rem, 4vw, 3.5rem) 0;
}

.preserved-related > header p {
  margin: 0 0 .85rem;
  color: var(--route-accent);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.preserved-related > header h2 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -.045em;
  line-height: .98;
}

.preserved-related__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--route-line);
  border-bottom: 1px solid var(--route-line);
}

.preserved-related__item {
  min-width: 0;
  border-right: 1px solid var(--route-line);
}

.preserved-related__item:last-child {
  border-right: 0;
}

.preserved-related__item a {
  display: flex;
  height: 100%;
  flex-direction: column;
}

.preserved-related__item a:hover img,
.preserved-related__item a:focus-visible img {
  opacity: .78;
}

.preserved-related__item img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .62;
  transition: opacity 180ms ease;
}

.preserved-related__copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.25rem 1.25rem 1.5rem;
  background: rgba(3, 18, 13, .62);
}

.preserved-related__copy p {
  margin: 0 0 auto;
  color: var(--route-accent);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.preserved-related__copy h3 {
  margin: 2.5rem 0 .65rem;
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  font-weight: 400;
  letter-spacing: -.025em;
  line-height: 1.05;
}

.preserved-related__copy span {
  color: var(--route-muted);
  line-height: 1.45;
}

.preserved-related__copy strong {
  display: flex;
  min-height: 44px;
  align-items: end;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding-top: .9rem;
  border-top: 1px solid var(--route-line);
  color: var(--route-accent);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.preserved-related__copy i {
  font-style: normal;
  font-size: 1rem;
}

@media (max-width: 900px) {
  .content-about-preserved .route-page__shell {
    width: calc(100% - (var(--edge) + var(--edge)));
  }

  .preserved-reading-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .preserved-toc {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .preserved-prose {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .preserved-main {
    padding-top: 4rem;
  }

  .preserved-article__header h1 {
    max-width: 100%;
    font-size: clamp(2.35rem, 10vw, 4.5rem);
    overflow-wrap: anywhere;
  }

  .preserved-hero {
    margin-top: 3rem;
  }

  .preserved-reading-layout {
    margin-top: 3.5rem;
  }

  .preserved-related__grid {
    grid-template-columns: 1fr;
  }

  .preserved-related__item,
  .preserved-related__item:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--route-line);
  }

  .preserved-related__item:last-child {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .preserved-related__item img {
    transition: none;
  }
}