/* Global spacing system: single source of truth for header-to-content distance */
:root {
  --space-section: 2.5rem; /* ~40px */
}

/* Apply to all pages */
main {
  margin-top: var(--space-section);
}

/* Normalize: ensure no extra top margin on the first block inside main */
main > :first-child {
  margin-top: 0;
}