.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  width: 100%;
  border-bottom: 1px solid var(--color-line);
  background: rgba(17, 18, 22, 0.96);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-linen);
  text-decoration: none;
}

.site-header__logo {
  flex: 0 0 auto;
  width: 2.125rem;
  height: 2.125rem;
  object-fit: contain;
}

.site-header__brand-copy {
  display: grid;
  min-width: 0;
  gap: 0.0625rem;
}

.site-header__brand-name {
  overflow: hidden;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__brand-detail {
  color: var(--color-mist);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__toggle {
  display: inline-flex;
  width: 3rem;
  min-height: 3rem;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0;
  border-color: var(--color-line);
  background: transparent;
}

.site-header__toggle:hover {
  border-color: var(--color-gold);
  background: rgba(199, 166, 106, 0.08);
}

.site-header__toggle-line {
  width: 1.25rem;
  height: 2px;
  background: var(--color-linen);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.475rem) 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(-0.475rem) rotate(-45deg);
}

.site-header__nav {
  position: absolute;
  top: calc(100% + 1px);
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 4.75rem);
  overflow-y: auto;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-navy);
  box-shadow: var(--shadow-floating);
}

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

.site-header__nav-list {
  display: grid;
  margin: 0;
  padding: var(--space-4) var(--page-gutter) 0;
  list-style: none;
}

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

.site-header__nav a {
  display: flex;
  min-height: 2.875rem;
  align-items: center;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-mist);
  font-size: var(--text-label);
  font-weight: 700;
  text-decoration: none;
}

.site-header__nav a:hover,
.site-header__nav a:focus-visible,
.site-header__nav a[aria-current="page"] {
  color: var(--color-linen);
}

.site-header__nav a[aria-current="page"] {
  border-bottom-color: var(--color-gold);
}

.site-header__contact {
  margin: var(--space-4) var(--page-gutter);
  padding: 0 var(--space-4);
  border: 1px solid var(--color-gold) !important;
  border-radius: var(--radius-control);
  background: var(--color-burgundy);
  color: var(--color-linen) !important;
}

@media (min-width: 64rem) {
  .site-header__inner {
    min-height: 5.25rem;
    gap: var(--space-5);
  }

  .site-header__logo {
    width: 2.625rem;
    height: 2.625rem;
  }

  .site-header__brand-name {
    font-size: 1.125rem;
  }

  .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;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__nav-list {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: clamp(0.75rem, 1.3vw, 1.25rem);
    padding: 0;
  }

  .site-header__nav-list li {
    display: flex;
    align-items: center;
  }

  .site-header__nav-list li:nth-child(n + 7) {
    display: none;
  }

  .site-header__nav a {
    min-height: 2.5rem;
    border-bottom: 2px solid transparent;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .site-header__contact {
    min-height: 2.5rem !important;
    margin: 0;
    padding: 0 var(--space-3);
  }
}

@media (max-width: 27rem) {
  .site-header__brand-detail {
    display: none;
  }
}

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