/* About page — content styles (layout/toc shared with Help via rnal.css) */

.about-page__header h1 {
  color: var(--rnal-maroon, #800000);
  font-size: 1.75rem;
}

.about-page .help-section p {
  margin: 0 0 1rem;
  line-height: 1.7;
  color: var(--rnal-text);
}

.about-page .help-section p:last-child {
  margin-bottom: 0;
}

.about-citation {
  margin-top: 1.25rem;
}

.about-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 0.75rem;
}

.about-feature-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background: var(--rnal-surface, #fff);
  border: 1px solid var(--rnal-border);
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.about-feature-icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--rnal-primary);
  margin-bottom: 0.65rem;
}

.about-feature-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.about-feature-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
  color: var(--rnal-text);
}

.about-feature-body p {
  font-size: 0.85rem;
  color: var(--rnal-muted);
  margin: 0;
  line-height: 1.5;
}

/* Keep feature text inside cards when help-section paragraph rules apply */
.about-features-grid .about-feature-body p {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .about-features-grid {
    grid-template-columns: 1fr;
  }
}