:root{--ewupb-primary:#111827;--ewupb-radius:8px}
.ewupb-btn{background:var(--ewupb-primary);color:#fff;border:0;border-radius:var(--ewupb-radius);padding:12px 16px;cursor:pointer}
.ewupb-sticky{position:fixed;left:0;right:0;bottom:0;z-index:9999;background:#fff;border-top:1px solid #e5e7eb;padding:12px}