html{scroll-behavior:smooth}.whatsapp-float{position:fixed;right:20px;bottom:20px;width:70px;height:70px;background:#25D366;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:0 4px 12px rgba(0,0,0,.2);z-index:9999;transition:transform .3s ease}.whatsapp-float:hover{transform:scale(1.1)}.whatsapp-float svg{width:30px;height:30px}