.detail-page {
  padding: 0;
  background: var(--paper);
}

.detail-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 10;
  display: flex;
  width: var(--rail);
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--line);
  background: var(--paper);
  padding: 1.4rem 1rem;
}

.detail-rail__mark {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 900;
}

.detail-rail nav {
  display: grid;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.detail-rail nav a:hover,
.detail-rail nav a:focus-visible {
  color: var(--brass);
}

.detail-shell {
  margin-left: var(--rail);
}

.detail-hero,
.detail-section,
.detail-contact {
  padding: clamp(2rem, 5vw, 5rem) var(--gutter);
}

.detail-hero {
  min-height: 88vh;
  display: grid;
  align-content: space-between;
  border-bottom: 1px solid var(--line);
}

.detail-kicker,
.detail-breadcrumbs,
.detail-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-breadcrumbs {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.detail-breadcrumbs a {
  border-bottom: 1px solid currentColor;
}

.detail-hero h1 {
  max-width: 12ch;
  margin: clamp(4rem, 12vh, 9rem) 0 2rem;
  font-family: var(--display);
  font-size: clamp(3.7rem, 10vw, 10rem);
  line-height: 0.82;
  letter-spacing: -0.055em;
}

.detail-hero__lead {
  max-width: 52rem;
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.7rem);
  line-height: 1.45;
}

.detail-section {
  border-bottom: 1px solid var(--line);
}

.detail-section--dark {
  background: var(--night);
  color: var(--bone);
}

.detail-section__heading {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr);
  gap: var(--gutter);
  margin-bottom: clamp(2rem, 5vw, 5rem);
}

.detail-section h2,
.detail-contact h2 {
  max-width: 14ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.6rem, 6vw, 6.5rem);
  line-height: 0.92;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid currentColor;
  border-left: 1px solid currentColor;
}

.detail-card {
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  padding: clamp(1.5rem, 3vw, 3rem);
}

.detail-card h3 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1;
}

.detail-card p,
.detail-copy p,
.detail-faq p {
  margin: 0;
  line-height: 1.7;
}

.detail-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 4rem);
  max-width: 75rem;
}

.detail-faq {
  display: grid;
  gap: 0;
  border-top: 1px solid currentColor;
}

.detail-faq article {
  display: grid;
  grid-template-columns: minmax(10rem, 0.4fr) minmax(0, 1fr);
  gap: var(--gutter);
  border-bottom: 1px solid currentColor;
  padding: 1.5rem 0;
}

.detail-faq h3 {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.detail-contact {
  background: var(--asphalt);
  color: var(--bone);
}

.detail-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: clamp(0.8rem, 1.4vw, 1.05rem);
  font-weight: 700;
  text-transform: uppercase;
}

.detail-contact__links a {
  border-bottom: 1px solid currentColor;
}

@media (max-width: 48rem) {
  .detail-rail {
    inset: 0 0 auto;
    width: auto;
    height: 3.65rem;
    flex-direction: row;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 0.7rem 1rem;
  }

  .detail-rail nav {
    display: flex;
    gap: 1rem;
  }

  .detail-shell {
    margin: 3.65rem 0 0;
  }

  .detail-section__heading,
  .detail-grid,
  .detail-copy,
  .detail-faq article {
    grid-template-columns: 1fr;
  }

  .detail-faq article {
    gap: 0.65rem;
  }
}