.site-header {
  position: relative;
  z-index: 900;
  width: 100%;
  background: var(--color-marine-900);
  color: var(--color-white-100);
}

.site-header__main {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-marine-900);
}

.site-header__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  gap: var(--space-5);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-white-100);
  text-decoration: none;
}

.site-header__brand:hover {
  color: var(--color-white-100);
}

.site-header__mark {
  width: 2.5rem;
  height: 2.5rem;
  max-width: none;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.08rem;
  line-height: 1;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.05em;
}

.site-header__brand-suffix {
  color: var(--color-silver-200);
  font-size: 0.5625rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.13em;
  line-height: 1.2;
}

.site-header__navigation {
  min-width: 0;
  flex: 1 1 auto;
}

.site-header__primary {
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.site-header__nav-list a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border-left: 3px solid transparent;
  color: var(--color-silver-200);
  font-size: var(--text-control);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-control);
  padding: 0.375rem 0.25rem 0.375rem 0.5rem;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  border-left-color: var(--color-amber-500);
  color: var(--color-white-100);
}

.site-header__toggle {
  display: none;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  min-height: 2.75rem;
  border-color: var(--color-steel-500);
  background: transparent;
  color: var(--color-white-100);
  padding: 0;
}

.site-header__toggle:hover {
  border-color: var(--color-silver-200);
  background: var(--color-marine-800);
  color: var(--color-white-100);
}

.site-header__toggle-lines {
  display: grid;
  width: 1.125rem;
  gap: 0.25rem;
}

.site-header__toggle-lines span {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(1) {
  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:nth-child(3) {
  transform: translateY(-0.375rem) rotate(-45deg);
}

.site-header__mobile-index {
  display: none;
}

.site-header__utility {
  background: var(--color-marine-950);
}

.site-header__utility-inner {
  display: grid;
  min-height: 3.75rem;
  grid-template-columns: auto minmax(0, 1fr) minmax(15rem, 22rem);
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-2);
}

.site-header__section-label {
  margin: 0;
  color: var(--color-amber-500);
  font-size: var(--text-meta);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  line-height: var(--leading-meta);
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__categories {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
}

.site-header__categories a {
  color: var(--color-silver-200);
  font-size: var(--text-control);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-control);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__categories a:hover,
.site-header__categories a[aria-current="page"] {
  color: var(--color-amber-500);
}

.site-header__search {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-2);
}

.site-header__search input {
  min-width: 0;
  min-height: 2.5rem;
  border-color: var(--color-line-marine);
  background: var(--color-graphite-700);
  padding: 0.5rem 0.625rem;
  font-size: var(--text-small);
}

.site-header__search button {
  min-height: 2.5rem;
  padding: 0.5rem 0.75rem;
}

.site-header__overlay {
  position: fixed;
  z-index: 890;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
}

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

@media (max-width: 1080px) {
  .site-header__inner {
    gap: var(--space-3);
  }

  .site-header__toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-header__navigation {
    position: fixed;
    z-index: 910;
    top: 0;
    right: 0;
    display: flex;
    width: min(100vw - 2.5rem, 24rem);
    height: 100dvh;
    max-width: 100%;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    border-left: 1px solid var(--color-border);
    background: var(--color-marine-900);
    box-shadow: var(--shadow-floating);
    padding: 5.5rem var(--space-5) var(--space-6);
    transform: translateX(105%);
    transition: transform var(--transition-fast);
  }

  .site-header__navigation--open {
    transform: translateX(0);
  }

  .site-header__nav-list {
    align-items: stretch;
    justify-content: flex-start;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--color-border);
  }

  .site-header__nav-list li {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .site-header__nav-list a {
    width: 100%;
    min-height: 3rem;
    white-space: normal;
  }

  .site-header__mobile-index {
    display: grid;
    gap: var(--space-2);
    margin-top: var(--space-6);
  }

  .site-header__mobile-label {
    margin: 0 0 var(--space-2);
    color: var(--color-amber-500);
    font-size: var(--text-meta);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.1em;
    line-height: var(--leading-meta);
    text-transform: uppercase;
  }

  .site-header__mobile-index a {
    color: var(--color-silver-200);
    font-size: var(--text-small);
    line-height: var(--leading-small);
  }

  .site-header__utility-inner {
    grid-template-columns: auto minmax(0, 1fr) minmax(13rem, 18rem);
    gap: var(--space-3);
  }

  .site-header__categories {
    gap: var(--space-2);
  }
}

@media (max-width: 760px) {
  .site-header__inner {
    min-height: 4rem;
  }

  .site-header__mark {
    width: 2.125rem;
    height: 2.125rem;
  }

  .site-header__brand-name {
    font-size: 0.9375rem;
  }

  .site-header__brand-suffix {
    font-size: 0.5rem;
  }

  .site-header__utility-inner {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding-block: var(--space-3);
  }

  .site-header__section-label {
    white-space: normal;
  }

  .site-header__categories {
    overflow-x: auto;
    padding-bottom: 0.125rem;
    scrollbar-width: thin;
  }

  .site-header__search {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-header__search button {
    width: 100%;
  }
}

@media (max-width: 380px) {
  .site-header__brand-suffix {
    display: none;
  }

  .site-header__navigation {
    width: calc(100vw - 1rem);
  }
}

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