.event-header { position: relative; z-index: 60; background: #fff; border-bottom: 1px solid #dde6ed; color: #003b75; }
.event-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; max-width: 1440px; margin: auto; padding: 8px 32px; min-height: 96px; }
.event-header__logo img { display: block; width: 174px; height: auto; }
.event-header__nav { display: flex; align-items: center; gap: 28px; font: 400 13px/1.5 Lato, Arial, sans-serif; }
.event-header__nav a, .event-header__nav summary { color: #003b75; text-decoration: none; text-transform: uppercase; padding: 12px 0; cursor: pointer; }
.event-header__nav a:hover, .event-header__nav summary:hover { text-decoration: underline; text-underline-offset: 5px; }
.event-header__nav [aria-current="page"] { font-weight: 900; }
.event-header__nav details { position: relative; }
.event-header__nav summary { list-style: none; }
.event-header__nav summary::-webkit-details-marker { display: none; }
.event-header__submenu { position: absolute; top: 100%; left: 0; min-width: 190px; display: grid; padding: 10px 18px; border: 1px solid #dde6ed; background: #fff; box-shadow: 0 8px 20px #003b751a; }
@media (max-width: 1100px) {
  .event-header__inner { flex-wrap: wrap; justify-content: center; gap: 8px; padding: 12px 18px; }
  .event-header__nav { justify-content: center; flex-wrap: wrap; gap: 4px 22px; }
}
@media (max-width: 640px) {
  .event-header__logo img { width: 130px; }
  .event-header__nav { font-size: 11px; gap: 2px 16px; }
  .event-header__nav a, .event-header__nav summary { padding: 7px 0; }
}