.introduction .top-img[data-v-5699e996]{display:block;width:100%}.introduction .function[data-v-5699e996]{height:9.38rem;padding-top:1.2rem}.introduction .function .title[data-v-5699e996]{color:#222;font-size:.34rem;font-weight:700;text-align:center}.introduction .function .img[data-v-5699e996]{display:block;margin:.85rem auto 0;width:11.98rem}.introduction .audio-book[data-v-5699e996]{height:8.04rem;padding-top:1.2rem}.introduction .audio-book .img[data-v-5699e996]{display:block;margin:0 auto;width:11.98rem}.introduction .audio-book[data-v-5699e996]{background:linear-gradient(180deg,#effdfa99,#fff0)}