/* Match ICCNRE 2027 navigation typography on every ICAI-NES page. */
.topbar {
  --nav-type-size: 20px;
  --nav-type-family: "Barlow Condensed", Arial, sans-serif;
  grid-template-columns: 210px minmax(0, 1fr) 210px;
  padding-inline: 18px;
  gap: 18px;
}
.topbar .brand { width: 210px; }
.topbar .brand > img { width: 210px; }
.topbar .main-menu { justify-content: center; gap: clamp(10px, 1.15vw, 20px); }
.topbar .main-menu > .nav-link, .topbar .nav-group > .nav-link {
  min-height: 52px;
  padding: 12px 4px;
  gap: 7px;
  font: 700 var(--nav-type-size)/1.4 var(--nav-type-family);
  letter-spacing: 0;
}
.topbar .nav-link i { font-size: 10px; }
.topbar .submenu a { min-height: 44px; font: 600 15px/1.58 Inter, "Microsoft YaHei", sans-serif; white-space: normal; }
.topbar .nav-actions { gap: 10px; }
.topbar .nav-actions .language-switch { font: 500 14px/1.58 Inter, "Microsoft YaHei", sans-serif; }
.topbar .nav-actions .submit-button { font: 700 13px/1.58 Inter, "Microsoft YaHei", sans-serif; }
.topbar .mobile-menu-cta { font: 700 12px/1.58 Inter, "Microsoft YaHei", sans-serif; }
.topbar .mobile-language { font: 500 14px/1.58 Inter, "Microsoft YaHei", sans-serif; }
@media (min-width: 1201px) and (max-width: 1400px) {
  .topbar { --nav-type-size: 19px; grid-template-columns: 190px minmax(0, 1fr) 190px; gap: 12px; padding-inline: 16px; }
  .topbar .brand { width: 190px; }
  .topbar .brand > img { width: 190px; }
  .topbar .main-menu { gap: 10px; }
  .topbar .nav-actions .submit-button { padding-inline: 12px; font-size: 12px; }
  .topbar .nav-actions .language-switch { min-width: 70px; }
}
@media (min-width: 1201px) and (max-width: 1279px) {
  .topbar { grid-template-columns: 180px minmax(0, 1fr) 180px; gap: 10px; padding-inline: 14px; }
  .topbar .brand { width: 180px; }
  .topbar .brand > img { width: 180px; }
  .topbar .nav-actions { gap: 8px; }
  .topbar .nav-actions .language-switch { min-width: 66px; padding-inline: 10px; }
}
@media (max-width: 1200px) {
  .hero:has(.main-menu.open) { z-index: 30; }
  .topbar { --nav-type-size: 17px; --nav-type-family: Inter, "Microsoft YaHei", sans-serif; min-height: 88px; display: flex; grid-template-columns: none; gap: 16px; }
  .topbar .brand { width: 200px; min-width: 0; flex: 0 1 200px; }
  .topbar .brand > img { width: 200px; }
  .topbar .nav-toggle { width: 44px; height: 44px; margin-left: auto; display: grid; place-items: center; color: var(--navy); background: #edf4fc; border: 0; border-radius: 8px; font-size: 20px; cursor: pointer; }
  .topbar .main-menu { position: absolute; top: calc(100% + 10px); right: 0; left: 0; padding: 10px; display: none; max-height: calc(100dvh - 116px); overflow-y: auto; background: #fff; border: 1px solid #e2eaf7; border-radius: 12px; box-shadow: 0 16px 36px #0b285329; }
  .topbar .main-menu.open { display: block; }
  .topbar .nav-group { display: block; }
  .topbar .main-menu > .nav-link, .topbar .nav-group > .nav-link { width: 100%; min-height: 50px; padding: 12px 14px; }
  .topbar .nav-parent { justify-content: space-between; }
  .topbar .submenu, .topbar .submenu-right { position: static; width: auto; min-width: 0; margin: 0 6px 8px; padding: 6px; display: none; background: #f3f7ff; border: 0; border-radius: 8px; box-shadow: none; opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
  .topbar .nav-group.open > .submenu { display: grid; transform: none; }
  .topbar .submenu a { min-height: 42px; padding: 10px 13px; font-size: 15px; }
}
@media (max-width: 620px) {
  .topbar { min-height: 78px; padding: 8px 12px; gap: 8px; }
  .topbar .brand { width: 164px; flex-basis: 164px; }
  .topbar .brand > img { width: 164px; }
  .topbar .nav-actions .submit-button { font-size: 11px; }
}