.site-header {
  position: relative;
  z-index: 800;
  border-bottom: var(--border);
  background: var(--color-void);
}

.site-header__inner {
  display: flex;
  align-items: center;
  min-height: 4.5rem;
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  min-width: 0;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
}

.site-header__brand:hover {
  color: var(--color-text);
}

.site-header__logo {
  flex: 0 0 2rem;
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.125rem;
}

.site-header__name {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  line-height: 1;
  white-space: nowrap;
}

.site-header__descriptor {
  color: var(--color-muted);
  font-size: 0.625rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  line-height: 1.1;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex: 0 0 2.75rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  min-height: 2.75rem;
  padding: 0;
  margin-left: auto;
  gap: 0.3125rem;
  border-color: var(--color-grid);
  background: var(--color-panel);
}

.site-header__toggle:hover {
  border-color: var(--color-green-highlight);
  background: var(--color-panel-raised);
}

.site-header__toggle-line {
  display: block;
  width: 1.125rem;
  height: 1px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.375rem) rotate(45deg);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  transform: translateY(-0.375rem) rotate(-45deg);
}

.site-header__nav {
  min-width: 0;
  margin-left: auto;
}

.site-header__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__list li,
.site-header__list li + li {
  display: flex;
  align-items: center;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.site-header__list a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.625rem 0.625rem;
  border-bottom: 1px solid transparent;
  color: var(--color-text);
  font-size: 0.75rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__list a:hover,
.site-header__list a:focus-visible,
.site-header__list a[aria-current="page"] {
  border-bottom-color: var(--color-green-highlight);
  color: var(--color-green-highlight);
}

.site-header__contact {
  margin-left: var(--space-2);
  border: 1px solid var(--color-green) !important;
  border-radius: var(--radius-control);
  background: var(--color-green);
  color: var(--color-on-green) !important;
}

.site-header__contact:hover,
.site-header__contact:focus-visible,
.site-header__contact[aria-current="page"] {
  border-color: var(--color-green-highlight) !important;
  background: var(--color-green-highlight);
  color: var(--color-on-green) !important;
}

@media (max-width: 959px) {
  .site-header__inner {
    min-height: 4rem;
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    border-top: var(--border);
    border-bottom: var(--border);
    background: var(--color-panel);
  }

  .site-header__nav--open {
    display: block;
  }

  .site-header__list {
    display: grid;
    gap: 0;
    padding: var(--space-2) var(--page-gutter);
  }

  .site-header__list li {
    border-bottom: var(--border);
  }

  .site-header__list li:last-child {
    border-bottom: 0;
  }

  .site-header__list a {
    width: 100%;
    min-height: 3rem;
    padding-inline: 0;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .site-header__list a:hover,
  .site-header__list a:focus-visible,
  .site-header__list a[aria-current="page"] {
    border-left-color: var(--color-green-highlight);
    color: var(--color-green-highlight);
  }

  .site-header__contact {
    justify-content: center;
    width: auto !important;
    margin: var(--space-3) 0;
    padding-inline: var(--space-4) !important;
    border-left: 1px solid var(--color-green) !important;
  }
}

@media (max-width: 399px) {
  .site-header__descriptor {
    display: none;
  }
}