style>.wa{position:fixed;bottom:20px;right:20px;z-index:9999;background:#25D366;border-radius:50%;width:60px;height:60px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(0,0,0,.3);cursor:pointer}.wa:hover{background:#20B954;transform:scale(1.1)}

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