.container {
  width: min(calc(100% - 32px), var(--maxw));
  margin-inline: auto;
}

.measure {
  width: min(calc(100% - 32px), var(--measure));
  margin-inline: auto;
}

.site-main {
  min-height: 72vh;
}

.section {
  padding-block: 96px;
}

.section-tight {
  padding-block: 64px;
}

.section-alt {
  background: var(--surface-alt);
}

.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sticky-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.in-page-nav {
  position: sticky;
  top: 96px;
  padding: 18px;
  background: rgba(255,255,255,.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.in-page-nav a {
  display: block;
  padding-block: 7px;
  color: var(--text-soft);
  font-size: 14px;
  text-decoration: none;
}

.in-page-nav a:hover {
  color: var(--accent-soft);
}

.content-stack > * + * {
  margin-top: 48px;
}

@media (max-width: 900px) {
  .section {
    padding-block: 64px;
  }

  .grid-2,
  .grid-3,
  .sticky-layout {
    grid-template-columns: 1fr;
  }

  .in-page-nav {
    position: static;
  }
}

@media (max-width: 430px) {
  .container,
  .measure {
    width: min(calc(100% - 24px), var(--maxw));
  }
}