/* Centralized navigation and small shared layout styles */
.site-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1rem;
  align-items: center;
}
.site-nav li {
  margin: 0;
}
.site-nav a {
  color: inherit;
  text-decoration: none;
  padding: 0.25rem 0.5rem;
}
.publish-date {
  /* 1.125rem (18px when browser default is 16px) chosen for slightly larger, readable publish dates */
  font-size: 1.125rem;
  margin-bottom: 1em;
}
@media (max-width: 640px) {
  .site-nav {
    flex-direction: column;
    gap: 0.5rem;
  }
}