.site-header {
  position: relative;
  z-index: 100;
  min-height: 5.25rem;
  border-bottom: var(--border-soft);
  background: color-mix(in srgb, var(--color-paper) 94%, transparent);
}

.site-header__inner {
  display: flex;
  min-height: 5.25rem;
  align-items: center;
  gap: var(--space-5);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-graphite);
  text-decoration: none;
}

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

.site-header__mark {
  width: 3rem;
  height: 3rem;
  flex: 0 0 3rem;
  object-fit: contain;
}

.site-header__brand-name {
  min-width: 0;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1;
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.65rem, 1.3vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none !important;
}

.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;
  color: var(--color-graphite);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  color: var(--color-blue-ink-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-pencil-blue);
  text-decoration-thickness: 0.125em;
  text-underline-offset: 0.24em;
}

.site-header__cta {
  width: auto;
  flex: 0 0 auto;
  min-height: 2.75rem;
  padding-inline: 0.875rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

.site-header .nav-toggle {
  display: none;
  flex: 0 0 auto;
  border-width: 2px;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.site-header .nav-toggle[aria-expanded="true"] {
  background: var(--color-graphite);
  color: var(--color-white-ink);
}

.site-header .nav-toggle[aria-expanded="true"] > span:nth-child(1) {
  transform: translateY(0.375rem) rotate(45deg);
}

.site-header .nav-toggle[aria-expanded="true"] > span:nth-child(2) {
  opacity: 0;
}

.site-header .nav-toggle[aria-expanded="true"] > span:nth-child(3) {
  transform: translateY(-0.375rem) rotate(-45deg);
}

.site-header .nav-toggle > span {
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (max-width: 67.99rem) {
  .site-header {
    min-height: 4.75rem;
  }

  .site-header__inner {
    min-height: 4.75rem;
    justify-content: space-between;
    gap: var(--space-3);
  }

  .site-header__mark {
    width: 2.5rem;
    height: 2.5rem;
    flex-basis: 2.5rem;
  }

  .site-header__brand-name {
    font-size: 1.2rem;
  }

  .site-header .nav-toggle {
    display: flex;
  }

  .site-header__nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    width: 100%;
    max-height: calc(100vh - 4.75rem);
    overflow-x: hidden;
    overflow-y: auto;
    padding: var(--space-4) max(var(--gutter), 1rem) var(--space-5);
    border-bottom: 2px solid var(--color-graphite);
    background: var(--color-paper);
    box-shadow: 0 8px 14px rgb(61 58 58 / 12%);
  }

  .site-header__nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
  }

  .site-header__nav-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-header__nav-list li,
  .site-header__nav-list li + li {
    display: block;
    border-bottom: var(--border-soft);
  }

  .site-header__nav-list li:first-child {
    border-top: var(--border-soft);
  }

  .site-header__nav-list a {
    display: flex;
    min-height: 3rem;
    justify-content: flex-start;
    padding-inline: var(--space-2);
    font-size: var(--text-base);
    text-align: left;
    white-space: normal;
  }

  .site-header__cta {
    width: 100%;
    min-height: 3rem;
  }

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

@media (max-width: 25rem) {
  .site-header__brand {
    gap: var(--space-2);
  }

  .site-header__brand-name {
    font-size: 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .nav-toggle,
  .site-header .nav-toggle > span {
    transition: none;
  }
}