.landing{width:100%;height:100%;font-size:0}.landing img{width:inherit}.landing .btn_landing{position:fixed;left:50%;bottom:.666667rem;transform:translateX(-50%);width:90%;height:1.282051rem;border-radius:.641026rem;border:none;background:#ff672e;line-height:1.282051rem;font-size:.512821rem;font-weight:500;color:#fff;font-family:PingFang SC}.landing .btn_landing .large{font-size:.717949rem}