.u-back-top[data-v-ec93567e]{width:2.5rem;height:2.5rem;position:fixed;z-index:9;display:flex;flex-direction:row;flex-direction:column;justify-content:center;background-color:#e1e1e1;color:var(--color-content, #666666);align-items:center;transition:opacity .4s}.u-back-top__content[data-v-ec93567e]{display:flex;flex-direction:row;flex-direction:column;align-items:center}.u-back-top__content__tips[data-v-ec93567e]{font-size:.75rem;transform:scale(.8);line-height:1}.index[data-v-96734fd3]{padding-bottom:3.125rem;background-size:100% auto;background-repeat:no-repeat}