.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--rule);
}

.site-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.site-brand:hover { color: var(--blue); }
.site-navigation { min-width: 0; }
.site-navigation[hidden], .site-nav-toggle[hidden] { display: none; }
.site-navigation__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-navigation a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.55rem 0.75rem;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.3;
  text-decoration: none;
}

.site-navigation a:hover { color: var(--blue); background: var(--accent-soft); }
.site-navigation a[aria-current] {
  color: var(--blue);
  background: var(--accent-soft);
  font-weight: 600;
}

.site-nav-toggle { display: none; }
.site-brand:focus-visible,
.site-navigation a:focus-visible,
.site-nav-toggle:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

@media (max-width: 799px) {
  .site-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0 0.75rem;
    padding-block: 0.65rem;
  }

  .site-brand {
    min-width: 0;
    font-size: clamp(1.25rem, 4.6vw, 1.45rem);
  }

  .site-header[data-nav-enhanced] .site-nav-toggle:not([hidden]) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 44px;
    margin: 0;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--rule);
    border-radius: 6px;
    background: transparent;
    color: var(--ink);
    font-family: var(--sans);
    font-size: 0.8125rem;
    font-weight: 400;
    line-height: 1;
    cursor: pointer;
  }

  .site-nav-toggle:hover,
  .site-nav-toggle[aria-expanded="true"] { background: var(--accent-soft); color: var(--blue); }

  .site-nav-toggle svg {
    display: block;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
  }

  .site-nav-toggle__close { display: none; }
  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__open { display: none; }
  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__close { display: block; }
  .site-navigation { grid-column: 1 / -1; }
  .site-navigation__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.25rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    border: 1px solid var(--rule);
    border-radius: 8px;
    background: #ffffff70;
  }

  .site-navigation a { padding: 0.6rem 0.65rem; }
}