Hi there,
this article explains how to keep the desktop ( inline ) menu on mobile for the secondary nav:
https://docs.generatepress.com/article/disable-secondary-navigation-mobile-menu/
To make the secondary menu items bold you can use this CSS:
.secondary-navigation .main-nav ul li a {
font-weight: bold;
}
And to add a ‘search’ label to the icon add this CSS:
.secondary-menu-bar-items .menu-bar-item.search-item > a:after {
content: 'Search';
margin-left: 10px;
}