.site-topbar {
  color: rgba(255, 255, 255, 0.9);
  background: var(--iu-sky);
  font-size: 0.8rem;
}

.site-topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
  gap: 18px;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.topbar-link {
  opacity: 0.92;
  transition: 0.2s ease;
}

.topbar-link:hover {
  color: #fff;
  opacity: 1;
}

.lang-switch {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.lang-switch span {
  padding: 3px 10px;
}

.lang-switch span:first-child {
  color: var(--iu-blue-950);
  background: #fff;
  font-weight: 900;
}

.site-header {
  position: sticky;
  z-index: 999;
  top: 0;
  background: var(--iu-indigo);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
}

.admin-bar .site-header {
  top: 32px;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  gap: 32px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  min-width: 360px;
}

.site-brand img {
  display: block;
  width: 390px;
  max-height: 74px;
  object-fit: contain;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-button,
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 0;
  border-radius: 999px;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.search-button:hover,
.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.primary-nav > ul,
.dropdown-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.dropdown-primary-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.dropdown-menu-item {
  position: relative;
}

.dropdown-menu-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 48px;
  padding: 0 16px;
  color: rgba(255, 255, 255, 0.94);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 800;
  white-space: nowrap;
  transition:
    color 0.2s ease,
    background 0.2s ease;
}

.dropdown-menu-item:hover > .dropdown-menu-link,
.dropdown-menu-item:focus-within > .dropdown-menu-link {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
}

.dropdown-caret {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.82rem;
  line-height: 1;
  transform: translateY(-1px);
}

.dropdown-submenu {
  position: absolute;
  z-index: 1000;
  top: calc(100% + 14px);
  left: 0;
  display: block;
  min-width: 330px;
  max-width: 430px;
  padding: 12px 0;
  margin: 0;
  list-style: none;
  background: #fff;
  border: 1px solid rgba(226, 232, 240, 0.96);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.18);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  pointer-events: none;
  transition:
    opacity 0.18s ease,
    visibility 0.18s ease,
    transform 0.18s ease;
}

.dropdown-submenu::before {
  content: "";
  position: absolute;
  inset: -14px 0 auto;
  height: 14px;
}

.dropdown-menu-item:hover > .dropdown-submenu,
.dropdown-menu-item:focus-within > .dropdown-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-submenu > li {
  display: block;
  width: 100%;
}

.dropdown-submenu > li + li {
  border-top: 1px solid #eef2f7;
}

.dropdown-submenu a {
  display: block;
  width: 100%;
  padding: 13px 22px;
  color: #2b2b2b;
  background: #fff;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.35;
  transition:
    color 0.18s ease,
    background 0.18s ease,
    padding-left 0.18s ease;
}

.dropdown-submenu a:hover {
  color: var(--iu-blue-900);
  background: var(--iu-blue-50);
  padding-left: 28px;
}

.dropdown-submenu-item--parent > a {
  position: relative;
  color: var(--iu-blue-950);
  background: #f7faff;
  font-weight: 850;
}

.dropdown-submenu-item--parent > a::after {
  position: absolute;
  right: 21px;
  color: var(--iu-sky);
  content: "—";
}

.dropdown-nested-submenu {
  padding: 4px 0 8px;
  margin: 0;
  list-style: none;
  background: #fff;
}

.dropdown-nested-submenu li + li {
  border-top: 1px solid #f1f4f8;
}

.dropdown-nested-submenu a {
  position: relative;
  padding: 10px 22px 10px 42px;
  color: #46566d;
  font-size: 0.9rem;
  font-weight: 650;
}

.dropdown-nested-submenu a::before {
  position: absolute;
  top: 50%;
  left: 23px;
  width: 8px;
  height: 1px;
  background: #8ca2bd;
  content: "";
}

.dropdown-nested-submenu a:hover {
  padding-left: 47px;
}

.dropdown-menu-item:nth-child(1) .dropdown-submenu,
.dropdown-menu-item:nth-child(4) .dropdown-submenu,
.dropdown-menu-item:nth-child(5) .dropdown-submenu {
  min-width: 390px;
}

.dropdown-menu-item:nth-last-child(1) .dropdown-submenu,
.dropdown-menu-item:nth-last-child(2) .dropdown-submenu {
  left: auto;
  right: 0;
}

.mobile-panel {
  display: none;
  padding: 0 0 22px;
}

.mobile-panel.is-open {
  display: block;
}

.mobile-mega-nav {
  display: grid;
  gap: 12px;
}

.mobile-menu-group {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 18px;
}

.mobile-menu-title {
  display: block;
  padding: 14px 16px;
  color: #fff;
  font-size: 1rem;
  font-weight: 900;
  background: rgba(255, 255, 255, 0.08);
}

.mobile-menu-group > ul {
  display: grid;
  padding: 8px 14px 14px;
  margin: 0;
  list-style: none;
}

.mobile-menu-group > ul > li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.mobile-menu-group > ul > li > a {
  display: block;
  padding: 10px 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  font-weight: 700;
}

.mobile-menu-item--parent > a {
  color: #fff !important;
  font-weight: 850 !important;
}

.mobile-nested-menu {
  padding: 2px 0 10px 15px;
  margin: 0;
  list-style: none;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.mobile-nested-menu li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.mobile-nested-menu a {
  display: block;
  padding: 8px 0 8px 14px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.84rem;
  font-weight: 650;
}