.part1 {
  position: relative;
  height: 987px;
}

.part1 .ctMain {
  width: 100%;
  top: initial;
  /* left: 210px; */
  left: 50%;
  bottom: 210px;
  text-align: left;
  /* transform: initial; */
  transform: translateX(-50%);
}

.part1 .b {
	font-weight:bold;
  max-width: 750px;
  font-size: 50px;
  line-height: 60px;
  color: white;
}

.part2 {
  padding: 145px 0 350px;
  position: relative;
  margin-bottom: 100px;
}

.part2 .Pic{
    position: absolute;
    right: 0;
    bottom: 10%;}

.part2 .b {
	font-weight:bold;
  font-size: 50px;
  line-height: 60px;
}

.part2 .s {
  max-width: 680px;
  margin-top: 175px;
  font-size: 20px;
  line-height: 30px;
  color: #717171;
}

.part3 ul {
  font-size: 0;
}

.part3 li.dibm {
  max-width: calc((100% - 145px) / 2);
  margin-bottom: 183px;
}

.part3 li.dibm.l {
  margin-left: 145px;
}

.part3 .b {
	font-weight:bold;
  max-width: 400px;
  height: 120px;
  font-size: 50px;
  line-height: 60px;
}

.part3 .s {
  max-width: 680px;
  height: 410px;
  margin-top: 30px;
  font-size: 20px;
  line-height: 30px;
  color: #717171;
}

.part3 .spc .s {
    height: initial;
}


.part3 .spc .putImg{ width:50%; max-width:687px; margin-left:5%;}

@media (max-width:1366px) {
.part3 .s{ height:500px;}
.part2 .Pic{ width:40%}
}

@media (max-width:1024px) {
.part3 .s{ height:650px;}
.part2 .Pic{ position:static; width:100%;}
.part2{ margin-bottom:0px;}
}


@media (max-width:768px) {
.part1{ height:auto; padding:60% 0 15% 0;}
.part1 .ctMain{ position:static;transform:none}
.part2{ padding:20% 0;}
.part2 .s{  margin-top:10%}
.part2 .b,.part3 .b{ font-size:40px; line-height:50px;}
.part3 li.dibm{ width:100%; margin:5% 0 10% !important; max-width:inherit}
.part3 .s{ height:auto; margin:5% 0 10%}
.part3 .b{ height:auto; margin-bottom:10%;}
.part3 li.spc a{ display:block}
.part3 .spc .putImg{ width:100%; max-width:inherit; margin-left:0}
.part2 .Pic{ margin-top:10%}
}

@media (max-width:640px) {
.part1 .b{ font-size:35px;}	
.part2 .b,.part3 .b{ font-size:30px; line-height:45px;}
.part2 .s{ font-size:18px;}
.part3 .s{ font-size:18px; line-height:25px;}
}