* { box-sizing: border-box; }
.container{max-width:480px;margin:0 auto;}
a{text-decoration:none;color:inherit;}
.app-toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%) scale(0.9);background:rgba(20,20,20,0.9);color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;z-index:99999;max-width:80%;text-align:center;opacity:0;transition:opacity .2s,transform .2s;}
.app-toast.show{opacity:1;transform:translate(-50%,-50%) scale(1);}