.wa-float{position:fixed;bottom:28px;right:28px;z-index:400;width:58px;height:58px;background:#25d366;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 18px rgba(37,211,102,.45);transition:transform .2s,box-shadow .2s;text-decoration:none}
  .wa-float:hover{transform:scale(1.1);box-shadow:0 6px 24px rgba(37,211,102,.55)}
  .wa-float svg{width:32px;height:32px;fill:#fff}
  .wa-float-pulse{position:absolute;inset:0;border-radius:50%;background:#25d366;animation:waPulse 2.2s ease-out infinite;z-index:-1}
  @keyframes waPulse{0%{transform:scale(1);opacity:.7}70%{transform:scale(1.55);opacity:0}100%{transform:scale(1.55);opacity:0}}