html {
  scroll-padding-top: 96px;
}

.architecture-page {
  background-color: var(--color-bg);
}

.hero-architecture .hero-inner {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.3fr);
}

.architecture-subnav {
  position: sticky;
  top: 64px;
  z-index: 10;
  background: linear-gradient(90deg, var(--color-bg) 0%, var(--color-bg-alt) 60%, #ffffff 100%);
}

.architecture-subnav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding-block: 12px;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.architecture-subnav-list a {
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
}

.architecture-subnav-list a:hover {
  border-bottom-color: var(--color-primary);
}

.architecture-section {
  position: relative;
}

.architecture-figure-caption {
  padding: 12px 16px 14px;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
  background-color: var(--color-surface-soft);
  border-top: 1px solid var(--color-border-subtle);
}

.architecture-bullet-list li + li {
  margin-top: 8px;
}

.architecture-callout-row {
  margin-top: var(--space-32);
}

.architecture-callout {
  border-style: dashed;
}

.architecture-header-grid .card,
.architecture-grid-system .card,
.architecture-palette-grid .card,
.architecture-modules-grid .card,
.architecture-accessibility-grid .card,
.architecture-search-grid .card,
.architecture-engagement-grid .card,
.architecture-physical-grid .card {
  box-shadow: var(--shadow-soft);
}

.palette-swatches {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.palette-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: var(--space-16);
  align-items: center;
}

.palette-swatch {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-soft);
}

.palette-bg {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 60%, #ffffff 100%);
}

.palette-text {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-700) 100%);
}

.palette-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 60%, var(--color-success) 100%);
}

@media (max-width: 960px) {
  .architecture-subnav {
    top: 56px;
  }
}

@media (max-width: 720px) {
  .architecture-subnav-list {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 10px;
  }
}