.index-nav {
  position: sticky;
  top: var(--space-lg);
  padding-top: var(--space-sm);
}

.index-nav-label {
  display: block;
  margin-bottom: var(--space-md);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.index-nav ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.index-nav a {
  text-decoration: none;
  font-size: 0.8125rem;
  color: var(--color-muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 0.1rem;
  transition:
    color var(--transition-fast) ease,
    border-color var(--transition-fast) ease;
}

.index-nav a:hover,
.index-nav a[aria-current="true"] {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.section-header {
  display: grid;
  gap: var(--space-sm);
}

.section-kicker {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.section-title {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.statement {
  font-family: var(--font-editorial);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.4;
  max-width: var(--measure);
}

.statement--quiet {
  font-size: 1.375rem;
  color: var(--color-text);
}

.prose {
  max-width: var(--measure);
  color: var(--color-text);
}

.prose p + p {
  margin-top: var(--space-md);
}

.system-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-md);
}

.system-step {
  display: grid;
    grid-template-columns: var(--system-label) minmax(0, 1fr);
  gap: var(--space-md);
  align-items: baseline;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.system-step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.system-name {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.system-note {
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.object {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
  transition: border-color var(--transition-fast) ease;
}

.object:hover {
  border-color: var(--color-border-hover);
}

.object-type {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.object-title {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.3;
}

.object-body {
  color: var(--color-text);
  font-size: 0.9375rem;
  max-width: 36rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  color: var(--color-muted);
  font-size: 0.8125rem;
}

.meta span:not(:last-child)::after {
  content: " ·";
}

.relations {
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-sm);
}

.relations summary {
  cursor: pointer;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.relations summary::-webkit-details-marker {
  display: none;
}

.relations summary::after {
  content: " →";
  color: var(--color-accent);
}

.relations[open] summary::after {
  content: "";
}

.relation-list {
  margin-top: var(--space-sm);
  color: var(--color-text);
  font-size: 0.875rem;
}

.project-fields {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.project-field dt {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.project-field dd {
  margin: var(--space-xs) 0 0;
  font-size: 0.9375rem;
}

.placeholder-note {
  color: var(--color-muted);
  font-size: 0.9375rem;
  max-width: var(--measure);
}

.objects-slot:empty::before {
  content: "Records load from the content file.";
  color: var(--color-muted);
  font-size: 0.875rem;
}

@media (max-width: 960px) {
  .index-nav {
    position: static;
    padding: 0 0 var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-md);
  }

  .index-nav ol {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
  }

  .statement {
    font-size: 1.5rem;
  }

  .system-step {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }
}