.search-form { display:flex; align-items:flex-end; flex-wrap:wrap; gap:12px; }
.search-form label:first-child { flex:1 1 380px; min-width:0; max-width:620px; }
.search-form label:first-child input { width:100%; }
.contextual-help { border-left:4px solid #0d6670; }
.contextual-help summary { color:#075f79; font-weight:700; }
.contextual-help p { max-width:90ch; margin:12px 0; }
@media(max-width:760px) { .search-form label:first-child { flex-basis:100%; max-width:none; } }