.site-header {
  position: relative;
  z-index: 40;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-white);
}

.site-header__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  gap: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  min-width: 0;
  gap: var(--space-2);
  color: var(--color-ink);
  text-decoration: none;
}

.site-header__logo {
  flex: 0 0 2rem;
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.site-header__brand-text {
  overflow: hidden;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__toggle {
  display: inline-flex;
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-ink);
  transition: border-color var(--transition-control), background-color var(--transition-control);
}

.site-header__toggle:hover {
  border-color: var(--color-cyan);
  background: var(--color-blue-wash);
}

.site-header__toggle-lines {
  display: grid;
  width: 1.25rem;
  gap: 0.25rem;
}

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

.site-header--menu-open .site-header__toggle-lines span:nth-child(1) {
  transform: translateY(0.375rem) rotate(45deg);
}

.site-header--menu-open .site-header__toggle-lines span:nth-child(2) {
  opacity: 0;
}

.site-header--menu-open .site-header__toggle-lines span:nth-child(3) {
  transform: translateY(-0.375rem) rotate(-45deg);
}

.site-header__nav {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  display: none;
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-mist);
  box-shadow: var(--shadow-floating);
}

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

.site-header__menu {
  display: grid;
  gap: 0;
  margin: 0;
  padding: var(--space-3) var(--gutter) 0;
  list-style: none;
}

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

.site-header__menu a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
}

.site-header__menu a:hover,
.site-header__menu a:focus-visible {
  color: var(--color-blue);
}

.site-header__mobile-action {
  padding: var(--space-4) var(--gutter) var(--space-5);
}

.site-header__download {
  display: none;
  flex: 0 0 auto;
  min-height: 2.5rem;
  padding-inline: var(--space-3);
  white-space: nowrap;
}

@media (min-width: 56.25rem) {
  .site-header__inner {
    min-height: 4.75rem;
    gap: var(--space-5);
  }

  .site-header__logo {
    flex-basis: 2.25rem;
    width: 2.25rem;
    height: 2.25rem;
  }

  .site-header__brand-text {
    font-size: 1.25rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    display: block;
    flex: 1 1 auto;
    max-height: none;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-header__menu {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-4);
    margin: 0;
    padding: 0;
  }

  .site-header__menu a {
    display: inline-flex;
    min-height: 2.5rem;
    align-items: center;
    padding: 0;
    border: 0;
    color: var(--color-slate);
    white-space: nowrap;
  }

  .site-header__menu a:hover,
  .site-header__menu a:focus-visible {
    color: var(--color-blue);
  }

  .site-header__menu-extra,
  .site-header__menu-contact {
    display: none;
  }

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

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

@media (min-width: 70rem) {
  .site-header__menu {
    gap: var(--space-5);
  }
}

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