.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  min-width: 0;
  height: var(--header-height);
  border-block-end: 1px solid var(--color-border);
  background: var(--color-asphalt-900);
}

.site-header__inner {
  display: grid;
  min-width: 0;
  height: 100%;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-4);
}

.site-header__desktop-nav {
  min-width: 0;
}

.site-header__desktop-nav--primary {
  justify-self: start;
}

.site-header__desktop-nav--actions {
  justify-self: end;
}

.site-header__nav-list,
.site-header__mobile-list {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list {
  align-items: center;
  gap: clamp(var(--space-3), 1.5vw, var(--space-5));
}

.site-header__nav-list li,
.site-header__mobile-list li {
  min-width: 0;
  margin: 0;
  padding: 0;
}

.site-header__nav-list li + li,
.site-header__mobile-list li + li {
  margin-block-start: 0;
}

.site-header__nav-link {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  color: var(--color-white-muted);
  font-size: var(--font-size-small);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-label);
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--transition-control), text-decoration-color var(--transition-control);
}

.site-header__nav-link:hover,
.site-header__nav-link[aria-current="page"] {
  color: var(--color-white-100);
}

.site-header__nav-link--contact {
  padding-inline: var(--space-2);
  border-block-end: 1px solid var(--color-white-100);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-self: center;
  gap: var(--space-3);
  color: var(--color-white-100);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__mark {
  width: 1.875rem;
  min-width: 1.875rem;
  height: 1.875rem;
  object-fit: contain;
  background: transparent;
}

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
}

.site-header__toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  justify-self: end;
  padding: 0;
  background: transparent;
  color: var(--color-white-100);
}

.site-header__toggle-line {
  position: absolute;
  width: 1.375rem;
  height: 1px;
  background: currentColor;
  transition: transform var(--transition-control), opacity var(--transition-control);
}

.site-header__toggle-line:nth-child(1) { transform: translateY(-0.4rem); }
.site-header__toggle-line:nth-child(3) { transform: translateY(0.4rem); }

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

.site-header__mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 1001;
  display: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-asphalt-900);
  border-block-start: 1px solid var(--color-border);
}

.site-header__mobile-nav.is-open {
  display: block;
}

.site-header__mobile-nav-inner {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  gap: var(--space-6);
  padding-block: var(--space-7);
}

.site-header__mobile-label {
  margin: 0;
  color: var(--color-charcoal-500);
  font-size: var(--font-size-small);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-label);
  text-transform: uppercase;
}

.site-header__mobile-list {
  flex-direction: column;
  gap: 0;
  border-block-start: 1px solid var(--color-border);
}

.site-header__mobile-list a {
  display: flex;
  min-height: 3.75rem;
  align-items: center;
  border-block-end: 1px solid var(--color-border);
  color: var(--color-white-100);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 7vw, 2.75rem);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-heading);
  line-height: 1.1;
  text-decoration: none;
}

body.site-header-menu-open {
  overflow: hidden;
}

@media (max-width: 68rem) {
  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
  }

  .site-header__desktop-nav {
    display: none;
  }

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

@media (max-width: 47.99rem) {
  .site-header__brand {
    gap: var(--space-2);
  }

  .site-header__mark {
    width: 1.75rem;
    min-width: 1.75rem;
    height: 1.75rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-line,
  .site-header__nav-link {
    transition: none;
  }
}