.chat-floating-wrapper{position:fixed;bottom:85px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:25px}.chat-button{width:52px;height:52px;position:relative}.chat-button a{display:block;width:100%;height:100%}.chat-button img{width:100%;height:auto;border-radius:50%;border:2px solid #fff0;box-shadow:0 4px 8px rgb(0 0 0 / .15);transition:transform 0.3s ease,box-shadow 0.3s ease;position:relative;z-index:2}.chat-button::before,.chat-button::after{content:'';position:absolute;inset:0;border-radius:50%;animation:ripple 2.2s infinite ease-out;z-index:1;opacity:.6}.chat-button::after{animation-delay:0.6s}@keyframes ripple{0%{transform:scale(1);opacity:.6}100%{transform:scale(2.2);opacity:0}}.chat-button:hover img{transform:scale(1.1);box-shadow:0 0 15px rgb(0 104 255 / .4)}.chat-button.zalo img{border-color:#118cff}.chat-button.zalo::before{background:rgb(17 140 255 / .2)}.chat-button.zalo::after{background:rgb(17 140 255 / .15)}.chat-button.messenger img{border-color:#09F}.chat-button.messenger::before{background:rgb(0 153 255 / .2)}.chat-button.messenger::after{background:rgb(0 153 255 / .15)}.chat-button.hotline img{border-color:#4CAF50}.chat-button.hotline::before{background:rgb(76 175 80 / .2)}.chat-button.hotline::after{background:rgb(76 175 80 / .15)}@media (min-width:689px) and (max-width:991px){.chat-button{width:45px;height:45px}.chat-floating-wrapper{gap:20px}}@media (max-width:688px){.chat-button{width:42px;height:42px}.chat-floating-wrapper{gap:18px}}