.site-header { position: sticky; top: 0; }
@media (min-width: 761px) {
    .site-header { top: calc(-1 * var(--nav-sections-height, 43px)); }
    .nav-top { position: sticky; top: 0; z-index: 2; background: #fff; }
    .site-header.is-condensed { box-shadow: 0 2px 9px #13234012; }
    .site-header.is-condensed .nav-main { visibility: hidden; pointer-events: none; }
    .site-header.is-condensed::before { clip-path: none; }
}