.cn-home-float{
  position:fixed;
  left:16px;
  bottom:16px;
  width:48px;
  height:48px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:9999;
  text-decoration:none;
  color:#fff;
  background:rgba(13,32,51,.94);
  border:1px solid #2a5c80;
  box-shadow:0 10px 28px rgba(0,0,0,.35);
  backdrop-filter:blur(10px);
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}
.cn-home-float:hover{
  transform:translateY(-2px) scale(1.04);
  border-color:#28b8ff;
  background:#12314d;
}
.cn-home-float span{
  font-size:27px;
  line-height:1;
  transform:translateY(-1px);
}
@media(max-width:600px){
  .cn-home-float{
    left:12px;
    bottom:12px;
    width:44px;
    height:44px;
  }
}