.yaotw-b2t{position:fixed;bottom:var(--yaotw-b2t-offset-y);right:var(--yaotw-b2t-offset-x);left:auto;z-index:var(--yaotw-b2t-z);display:flex;align-items:center;justify-content:center;padding:var(--yaotw-b2t-padding);border:none;border-radius:var(--yaotw-b2t-radius);background-color:var(--yaotw-b2t-bg);color:var(--yaotw-b2t-icon-color);cursor:pointer;transition:opacity 0.3s ease,transform 0.3s ease,background-color 0.2s ease,color 0.2s ease;line-height:0}.yaotw-b2t--left{left:var(--yaotw-b2t-offset-x);right:auto}.yaotw-b2t svg{width:var(--yaotw-b2t-size);height:var(--yaotw-b2t-size);display:block}.yaotw-b2t:hover,.yaotw-b2t:focus-visible{background-color:var(--yaotw-b2t-bg-hover);color:var(--yaotw-b2t-icon-color-hover);outline:none}.yaotw-b2t:focus-visible{box-shadow:0 0 0 3px rgb(0 0 0 / .2)}.yaotw-b2t--hidden{opacity:0;transform:translateY(10px);pointer-events:none}.yaotw-b2t--visible{opacity:1;transform:translateY(0);pointer-events:auto}