.site-header {
  position: relative;
  z-index: 100;
  width: 100%;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-ivory);
}

.site-header__inner {
  display: flex;
  min-height: 5rem;
  align-items: center;
  gap: var(--space-3);
}

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

.site-header__logo {
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  object-fit: contain;
}

.site-header__brand-name {
  min-width: 0;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.03em;
  line-height: 1;
  white-space: nowrap;
}

.site-header__toggle {
  display: inline-flex;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 0.25rem;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.site-header__toggle-line {
  display: block;
  width: 1.125rem;
  height: 2px;
  border-radius: 2px;
  background: var(--color-ink);
  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 {
  position: absolute;
  z-index: 101;
  top: calc(100% + 1px);
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 5rem);
  overflow-x: hidden;
  overflow-y: auto;
  padding: var(--space-5) var(--container-padding) var(--space-6);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-white);
  box-shadow: var(--shadow-panel);
}

.site-header__nav.is-open {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.site-header__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.site-header__nav-list a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  padding: 0.625rem 0;
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  line-height: var(--leading-label);
  text-decoration: none;
}

.site-header__nav-list a:hover,
.site-header__nav-list a[aria-current="page"] {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-lemon);
  text-decoration-thickness: 0.22em;
  text-underline-offset: 0.32em;
}

.site-header__mobile-cta {
  width: 100%;
}

.site-header__cta {
  display: none;
  flex: 0 0 auto;
  white-space: nowrap;
}

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

@media (min-width: 54rem) {
  .site-header__inner {
    min-height: 5.5rem;
    gap: var(--space-5);
  }

  .site-header__logo {
    width: 3rem;
    height: 3rem;
    flex-basis: 3rem;
  }

  .site-header__brand-name {
    font-size: 1.35rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    display: block;
    min-width: 0;
    max-height: none;
    margin-left: auto;
    padding: 0;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(0.65rem, 1.4vw, 1.35rem);
  }

  .site-header__nav-list a {
    min-height: 2.75rem;
    padding: 0;
    white-space: nowrap;
  }

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

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

@media (min-width: 75rem) {
  .site-header__inner {
    gap: var(--space-6);
  }
}