.site-header {
  position: relative;
  z-index: 100;
  border-bottom: var(--border-standard);
  background: rgba(255, 255, 255, 0.97);
}

.site-header__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.site-header__brand,
.site-footer__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-deep-ocean-slate);
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: var(--weight-heading);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__brand:hover {
  color: var(--color-deep-ocean-slate);
}

.site-header__mark {
  width: 1.875rem;
  height: 1.875rem;
  flex: 0 0 1.875rem;
  object-fit: contain;
}

.site-header__wordmark {
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: inline-flex;
  width: 2.75rem;
  min-height: 2.75rem;
  flex: 0 0 2.75rem;
  align-items: center;
  justify-content: center;
  border: var(--border-standard);
  border-radius: var(--radius-control);
  background: var(--color-white);
}

.site-header__toggle-lines {
  display: grid;
  gap: 0.25rem;
}

.site-header__toggle-lines span {
  display: block;
  width: 1.25rem;
  height: 2px;
  border-radius: 2px;
  background: var(--color-deep-ocean-slate);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:first-child {
  transform: translateY(0.375rem) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:last-child {
  transform: translateY(-0.375rem) rotate(-45deg);
}

.site-header__nav {
  position: absolute;
  z-index: 110;
  top: calc(100% + 1px);
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  padding: var(--space-4) max(var(--gutter), env(safe-area-inset-right)) calc(var(--space-5) + env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-left));
  border-bottom: var(--border-standard);
  background: var(--color-white);
  box-shadow: var(--shadow-subtle);
}

.site-header__nav.is-open {
  display: grid;
  gap: var(--space-5);
}

.site-header__nav-list,
.site-header__nav-list li {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list {
  display: grid;
  gap: var(--space-1);
}

.site-header__nav-list li + li {
  margin: 0;
}

.site-header__nav-list a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  padding: var(--space-2) 0;
  color: var(--color-deep-ocean-slate);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  line-height: var(--leading-label);
  text-decoration: none;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  color: var(--color-pacific-teal);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.3em;
}

.site-header__cta {
  width: 100%;
}

@media (min-width: 70rem) {
  .site-header__inner {
    min-height: 4.75rem;
    gap: var(--space-5);
  }

  .site-header__mark {
    width: 2.25rem;
    height: 2.25rem;
    flex-basis: 2.25rem;
  }

  .site-header__brand {
    font-size: 1.25rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    display: flex;
    min-width: 0;
    max-height: none;
    align-items: center;
    gap: var(--space-4);
    overflow: visible;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__nav-list {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: clamp(0.5rem, 1.15vw, 1rem);
  }

  .site-header__nav-list a {
    min-height: 2.75rem;
    padding: 0;
    white-space: nowrap;
  }

  .site-header__nav-legal {
    display: none;
  }

  .site-header__cta {
    width: auto;
    flex: 0 0 auto;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-lines span {
    transition: none;
  }
}