:root {
  --site-link-accent: #075bcc;
  --site-link-border: #b8c4d0;
  --site-link-current-surface: #e7f1ff;
  --site-link-hover-border: #75a7e8;
  --site-link-hover-surface: #edf4ff;
  --site-link-visited: #6f42c1;
  --site-focus-indicator: #075bcc;
}

.site-bar {
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3rem;
  padding: 0.6rem max(4rem, calc((100% - 68rem) / 2));
  border-bottom: 1px solid #dee2e6;
  background: #fff;
  color: #212529;
  font-family: system-ui, sans-serif;
  line-height: 1.5;
}

.site-navigation {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-navigation__identity {
  display: inline-flex;
  flex: none;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem;
}

.site-navigation__brand {
  color: #212529;
  font-weight: 600;
}

.site-navigation__version {
  color: #6c757d;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.site-navigation__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.site-navigation__link {
  display: block;
  padding: 0.3rem 0.55rem;
  border-radius: 0.3rem;
  color: var(--site-link-accent);
  font-weight: 600;
  text-decoration: none;
}

.site-navigation__link:hover,
.site-navigation__link[aria-current] {
  background: var(--site-link-hover-surface);
}

.site-source {
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--site-link-border);
  border-radius: 0.3rem;
  color: var(--site-link-accent);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.site-source:hover {
  border-color: var(--site-link-hover-border);
  background: var(--site-link-hover-surface);
}

.site-bar :focus-visible {
  outline: 3px solid var(--site-focus-indicator);
  outline-offset: 2px;
}

@media (width <= 36rem) {
  .site-bar {
    padding-inline: 1rem;
  }

  .site-bar,
  .site-navigation {
    align-items: flex-start;
    flex-direction: column;
  }
}