html,
body {
  height: 100%;
}

.pc {
  display: block;
}

.md {
  display: none;
}

.main {
  position: relative;
  /* height: calc(100% - 120px); */
  height: 100%;
  background-size: cover;
  background-repeat: no-repeat;
}

.main .btns {
  display: flex;
  align-items: center;
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.main .btns a {
  display: block;
  color: #1A1311;
  font-size: 14px;
  text-align: center;
  margin: 0 75px;
  padding: 10px;
  box-sizing: border-box;
  /* background-color: #fff; */
  font-family: 'SourceHanSansCN-ExtraLight'; 
  height: 100%;
}

.main .btns a:hover {
  color: #fff;
  background-color: #E85400;
}

.main .btns img {
  display: inline;
  height: 50px;
}
.main .btns a:nth-child(2) img{
  height: 80px;
  width: auto;
}

.main .img01 {
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
}

.main .img02 {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
}

@media screen and (max-width: 992px) {

  .pc {
    display: none;
  }
  
  .md {
    display: block;
  }
  
  .main {
    height: calc(100% - 60px);
  }

  .main .img01,
  .main .img02 {
    width: 70%;
  }

  .main .btns {
    display: block;
    width: 70%;
    top: 60%;
  }

  .main .btns a {
    margin: 0 0 10px;
    height: initial;
  }


}