.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(12, 17, 23, 0.78);
  border-bottom: 1px solid var(--color-border);
}

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

.site-header__brand {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.site-header__toggle {
  display: none;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: transparent;
  color: var(--color-text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-nav__link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-nav__link--active,
.site-nav__link:hover {
  color: var(--color-text);
}

@media (max-width: 48rem) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: 0.85rem 0;
  }

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

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-bottom: var(--space-sm);
  }

  .site-nav.is-open {
    display: flex;
  }
}