.main-nav .nav-group { position: relative; }
.main-nav .nav-group summary {
  list-style: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  padding: 8px 18px 8px 0;
  white-space: nowrap;
  position: relative;
}
.main-nav .nav-group summary::-webkit-details-marker { display: none; }
.main-nav .nav-group summary::after {
  content: "⌄";
  position: absolute;
  right: 0;
  top: 7px;
  color: #6b9b55;
  font-size: 1rem;
}
.main-nav .nav-group[open] summary,
.main-nav .nav-group summary:hover,
.main-nav .nav-group summary:focus-visible {
  color: #0f5670;
  border-color: #6b9b55;
  outline: none;
}
.main-nav .nav-submenu {
  z-index: 50;
  background: #fff;
  border: 1px solid #dce5df;
  border-radius: 14px;
  min-width: 230px;
  padding: 8px;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  box-shadow: 0 18px 42px rgba(26, 55, 65, .18);
}
.main-nav .nav-submenu-right { left: auto; right: 0; }
.main-nav .nav-submenu a {
  border: 0;
  border-radius: 9px;
  padding: 11px 12px;
  display: block;
  white-space: nowrap;
}
.main-nav .nav-submenu a:hover,
.main-nav .nav-submenu a:focus-visible { background: #eef7fa; }
.main-nav .nav-members {
  color: #fff;
  background: #123a4a;
  border: 0;
  border-radius: 11px;
  padding: 10px 14px;
}
.main-nav .nav-members:hover,
.main-nav .nav-members:focus-visible { color: #fff; background: #0f5670; }

@media (width <= 980px) {
  .main-nav .nav-group { width: 100%; }
  .main-nav .nav-group summary { border-bottom: 1px solid #edf0ec; padding: 13px 34px 13px 12px; }
  .main-nav .nav-group summary::after { top: 12px; right: 14px; }
  .main-nav .nav-submenu,
  .main-nav .nav-submenu-right {
    background: #f6faf8;
    border: 0;
    border-radius: 0 0 12px 12px;
    min-width: 0;
    padding: 4px 8px 9px 20px;
    position: static;
    box-shadow: none;
  }
  .main-nav .nav-submenu a { white-space: normal; }
  .main-nav .nav-members { border-radius: 10px; margin-top: 6px; }
}