.m-subnav[data-v-5871dbb2]{width:100%;max-width:750px;margin:0 auto;height:46px;background:#fff;display:flex;align-items:center;padding:0 15px;border-bottom:1px solid #f0f0f0;position:sticky;top:0;z-index:100}.m-subnav .m-back[data-v-5871dbb2]{width:18px;height:auto;margin-right:12px;cursor:pointer;transform:rotate(180deg)}.m-subnav .m-title[data-v-5871dbb2]{font-size:16px;font-weight:700;color:#333}