html{scroll-padding-top:calc(var(--site-header-height,180px) + 16px)}
.site-header{position:sticky;top:0;z-index:50;box-shadow:0 6px 24px #0003}
@media(max-width:900px){.header-bottom #topNav.menu-open{max-height:calc(100dvh - var(--site-header-height,180px));overflow-y:auto;overscroll-behavior:contain}}