.commerce-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);box-shadow:0 4px 18px rgba(20,35,70,.06)}
body.commerce-page[data-theme="dark"] .commerce-header{background:rgba(13,20,42,.9);box-shadow:0 4px 18px rgba(0,0,0,.2)}