/* Top bar, site header, logo, navigation, and mobile menu button */

.topbar {
  color: rgba(255,255,255,.86);
  background: #081827;
  font-size: .84rem;
}

.topbar-inner {
  display: flex;
  min-height: 34px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.topbar a {
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(18,34,51,.09);
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  min-height: 100px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo {
  display: block;
  width: auto;
  height: 104px;
  max-width: 390px;
  object-fit: contain;
  transition: opacity 160ms ease, transform 160ms ease;
}

.brand:hover .site-logo {
  opacity: 0.86;
  transform: translateY(-1px);
}

.primary-navigation {
  display: flex;
  align-items: center;
  gap: 20px;
}

.primary-navigation a {
  color: var(--navy);
  font-size: .9rem;
  font-weight: 800;
  text-decoration: none;
}

.primary-navigation a:hover {
  color: var(--blue);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 9px;
  border: 0;
  background: transparent;
}

.menu-button span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--navy);
}