.product {
  padding-top: 170px;
}

.part6 .ctTitle {
  margin-bottom: 135px;
  font-size: 30px;
  font-weight:bold;
  text-align: center;
}

.part6 {
  padding: 185px 0 138px;
}

.part5 {
  height: 985px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.part1 .p1_head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.part1 .p1_head .p1 {
  margin-bottom: 30px;
  font-size: 15px;
  line-height: 15px;
  color: #a9a9a9;
}

.part1 .p1_head .p2 {
  margin-bottom: 20px;
  font-size: 45px;
  line-height: 40px;
  text-transform: uppercase;
}

.part1 .p1_head .p3 {
  font-size: 35px;
  line-height: 45px;
}

.part1 .p1_head .right {
  font-size: 0;
}

.part1 .p1_head .right a {
  display: inline-block;
  margin-left: 20px;
}


.part1 .p1_head .right a img {
  display: block;
  max-width: 50px;
}

.part1 .bn {
  position: relative;
  height: 660px;
  margin-top: 120px;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.part1 .bn .info {
  position: absolute;
  width: 100%;
  top: 50%;
  left: 50%;
  font-size: 35px;
  line-height: 30px;
  color: white;
  font-weight: bold;
  text-align: center;
  transform: translate(-50%, -50%);
}

.part4 {
  max-width: 1190px;
  margin: 0 auto;
}

.part4 .tips {
  margin: 100px auto 86px;
  font-size: 20px;
  line-height: 25px;
  text-align: center;
  max-width: 800px;
}

.part4 ul {
  font-size: 0;
  margin-bottom: 100px;
}

.part4 li {
  width: calc((100% - 154px) / 3);
  margin-right: 77px;
  margin-bottom: 90px;
  text-align: left;
  font-size: 17px;
  line-height: 54px;
}

.part4 li a{ font-weight:bold; color:#585453;overflow: hidden;-webkit-line-clamp: 1;-webkit-box-orient: vertical;display: -webkit-box;}

.part4 li:nth-child(3n) {
  margin-right: 0;
}

.part4 li img {
  display: block;
  border: solid 2px #f3f3f3;
}

.part3 {
  padding-top: 135px;
}

.part3 .part3_1 .left_top {
  font-size: 30px;
  line-height: 45px;
  font-weight: bold;
}

.part3 .part3_1 ul {
  display: flex;
  margin: 85px auto 140px;
  justify-content: space-around;
}

.part3 .part3_1 ul li {
  text-align: center;
}

.part3 .part3_1 ul li img {
  margin: 0 auto 20px;
}

.part3 .part3_1 .p1 {
  font-size: 20px;
  line-height: 20px;
  font-weight: bold;
}

.part3 .part3_1 .p2 {
  margin: 10px auto 18px;
  font-size: 12px;
  line-height: 12px;
}

.part3 .part3_1 .p3 {
  width: 56px;
  height: 1px;
  margin: 0 auto;
  background-color: #b0b0b0;
}

.part3 .part3_2 {
  padding-top: 65px;
  border-top: 1px solid #eff3f6;
  border-bottom: 1px solid #eff3f6;
}

.part3 .part3_2 p {
  padding-left: 72px;
  font-size: 25px;
  line-height: 35px;
}

.part3 .part3_2 img {
  display: block;
  margin: 70px auto 115px;
}

.part2 .tips {
  max-width: 695px;
  margin: 295px auto 140px;
  text-align: center;
  font-size: 20px;
  line-height: 30px;
}

.part2 .swiper img {
  display: block;
  max-height: 550px;
}

.part2 .swiper .swiper-button-prev::after,
.part2 .swiper .swiper-button-next::after {
  display: none;
}

.part2 .swiper .swiper-button-prev,
.part2 .swiper .swiper-button-next {
  display: flex;
  width: 70px;
  height: 63px;
  opacity: 1;
}

.part2 .swiper .fl {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 4;
  transform: translate(-50%, -50%);
}

.part2 .swiper .swiper-button-prev {
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
  background-color: var(--themaBlack);
}

.part2 .swiper .swiper-button-next {
  border-top-right-radius: 20px;
  border-bottom-left-radius: 20px;
  background-color: #a9a9a9;
}

.part2 .swiper .swiper-slide {
  width: auto;
}



.part2 .p{ font-size:30px; color:#585453; font-weight: bold; margin-bottom:50px;}
.product-view .img{ text-align:center;width:50%}
.product-view .item{ padding-left:5%; font-size:16px;color:#686463;width:45%}
.product-view .item .p1{ font-size:35px; font-weight:bold; margin:50px 0;}
.product-view .item .p2{ text-transform:uppercase; line-height:25px;}
.product-view .item .p3{ height:1px; background:#f3f3f3; margin:5% 0;}
.product-view .item .p4{ margin-bottom:25px;}
.product-view{display: flex; margin-top:10%;}
.product-view .item nav a{ width:15%; display:inline-block; margin-right:5%; margin-bottom:5%;}
.product-view .item nav a img,.product-view .img img{ border:solid 2px #f3f3f3}


@media (max-width:1024px) {
.part5{ height:auto; padding:35% 0;}
.product-view{ display:block}
.product-view .img{ width:80%; margin:0 auto;}
.product-view .item{ padding-left:0; width:100%;}
}


@media (max-width:768px) {
.part6 .ctTitle{ font-size:26px; margin-bottom:10%}
.part6{ padding:15% 0 20%;}
.part4 li{width: 47.5%;margin-right: 5% !important; float:left}
.part4 li:nth-child(even) {margin-right: 0 !important;}
.part4 li img{ width:100%;}
.part4 ul{ margin-bottom:10%; overflow:hidden}
.part4 .tips{ margin:15% 0;}
.part3 .part3_1 ul{ display:block}
.part3 .part3_1 ul li{ width:24%; margin:2.5% 0;}
.part3 .part3_1 ul{ margin:10% 0;}
.part3{ padding-top:15%;}
.part2 .swiper .swiper-slide img{ height:500px;}
.part1 .bn{ height:auto; padding:50% 0;}
.part1 .bn{ margin-top:15%;}
.part2 .tips{ margin:35% 0 15%; padding:0 15px; font-size:18px;}
.product{ padding-top:25%;}
.part1 .p1_head .p2,.part1 .p1_head .p3{ font-size:32px; margin:5px 0 15px;}
.part1 .p1_head .p1{ margin-bottom:0}
}


@media (max-width:640px) {
.list > nav{ display:block}
.list > nav .param{ width:99%; margin-top:-1px;border: 1px solid #545454 !important;}
.list > nav .param a{ font-size:18px;}
.paramList .list_item{ width:100%; margin:5% 0 !important}
.list > nav .param p{ line-height:60px;}
.part4 li{ margin-bottom:10%; font-size:12px;}
.part3 .part3_2 p{ font-size:22px;}
.part3 .part3_2 img{ margin:10% 0 15%;}
.part3 .part3_2{ padding-top:10%;}
.part3 .part3_1 ul li{ width:49%;}
.part3 .part3_1 .p1{ font-size:16px;}
.part3 .part3_1 .left_top{ font-size:24px;}
.part2 .swiper .swiper-slide img{ height:300px;}
.part1 .bn .info{ font-size:24px;}
.product-view .item .p1{ font-size:18px; text-align:center}
.product-view .item nav a{ width:27%}
.part2 .p{ font-size:20px;}
}