.pc{
  position: relative;
  width: 100%;
  height: 100%;
  /* overflow: auto; */
}
.pc .top_box{
  width: 100%;
  height: 540px;
  /* background: url("../images/pc_banner.jpg") no-repeat;
  background-size: 100% 50%;  */
}
.pc .top_box .top_box_content{
  position: relative;
  width: 1200px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  padding-top: 30px;

}

.top_tit{
  box-sizing: border-box;
  padding-top: 100px;
  width: 1200px;
  margin:  auto ;

}
.top_tit .tit{
  width: 777px;
  height: 245px;
}
.pc .top_box .top_box_content .logo{
  width: 330px;
  height: auto;
}
.pc .top_box .top_box_content .nav{
  display: flex;

}
.pc .top_box .top_box_content .nav p a{
  color: #000;
}
.pc .top_box .top_box_content .nav p{
  width: 20px;
  height: 50px;
  padding-left: 4px;
  border-left: 6px solid #000;
  font-size: 20px;
  margin-right: 80px;
}
.pc .top_box .top_box_content .nav p.on a{
  color: #c11919;
}
.pc .top_box .top_box_content .nav p.on{
  color: #c11919;
  border-left: 6px solid #c11919;
}


.pc .product_box{
  position: relative;
  width: 100%;
  z-index: 2;
}
.pc .product_box::before{
  content: '';
  /* position: absolute; */
  bottom: 0;
  left: 0;
  width: 100%;
  height: 964px;
  z-index: -1;
  /* background: url("../images/pc_bg2.png") no-repeat;
  background-size: 100% 100%;  */
}
.pc .product_box .product_box_content{
  width: 1200px;
  margin: auto;
}
.pc .product_box .title{
  text-align: center;
  position: relative;
  font-size: 36px;
  font-weight: bold;
  color: #000;
  margin: 110px 0;
}
.pc .product_box .title::before{
  content: '';
  position: absolute;
  left: 50%;
  bottom: -20px;
  width: 76px;
  height: 8px;
  background-color: #c11919;
  transform: translateX(-50%);
}
.pc .product_box .nav_box{
  display: flex;
  justify-content: space-between;
  width: 100%;
}
.pc .product_box .nav{
  display: flex;
}
.pc .product_box .nav p{
  position: relative;
  margin-right: 80px;
  font-size: 28px;
}
.pc .product_box .nav p a{
  color: #000;
}
.pc .product_box .nav p.on a{
  color: #fff;
}
.pc .product_box .nav p.on{
  color: #fff;
}
.pc .product_box .nav p.on::before{
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 133px;
  height: 50px;
  background: url("../images/i_txt_bg.png") no-repeat;
  background-size: 100% 100%;
  z-index: -1;
  transform: translate(-50%,-50%);
}
.pc .product_box .nav_box .search{
  position: relative;
  width: 220px;
  height: 36px;
  border: 1px solid #000;
  border-radius: 18px;
  padding: 5px; 
  box-sizing: border-box;

}
.pc .product_box .nav_box .search::before{
  content: '';
  position: absolute;
  top: 50%;
  left: 20px;
  width: 18px;
  height: 18px;
  background: url("../images/i_search.png") no-repeat;
  background-size: 100% 100%;
  transform: translateY(-50%);
  z-index: 2;
}
.pc .product_box .nav_box .search input{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: none;
  border: none;
  outline: none;
  font-size: 20px;
  padding-left: 42px;
  border-radius: 18px;
}
.pc .product_box .nav_box .search .searcg_btn{
  position: absolute;
  top: 50%;
  right: -20px;
  height: 103%;
  padding-left: 14px;
  background-color: #000;
  color: #fff;
  font-size: 14px;
  line-height: 36px;
  border-radius: 20px;
  transform: translateY(-50%);
}
.pc .product_tit{
  font-size: 36px;
  margin: 77px 0 30px;
}
.pc .product_list{
  display: flex;
  justify-content: space-between;
}
.pc  .product_list .product_item{
  width: 32%;
  background-color: #fff;
}
.pc  .product_list .product_item .product_item_img{
  width: 100%;
  height: 338px;
}
.pc  .product_list .product_item .product_item_img img{
  width: 100%;
  height: 100%;
}
.pc  .product_list .product_item .msg{
  position: relative;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.pc .product_list .product_item .msg .tag{
  position: absolute;
  top: 18px;
  right: 32px;
  width: 35px;
  height: 55px;
  padding: 0 10px;
  background: url("../images/i_icon_bg.png") no-repeat;
  background-size: 100% 100%;
  color: #fff;
  font-size: 16px;
}
.pc .product_list .product_item .msg .msg_tit{
  font-size: 20px;
}
.pc  .product_list .product_item .msg .msg_tit span{
  color: #929292;
  font-size: 12px;
  margin-left: 20px;
}
.pc .product_list .product_item .msg .info{
  color: #666666;
  font-size: 14px;
}
.pc .product_list .product_item .msg .info span{
  margin-right: 20px;
}
.pc  .product_list .product_item .msg .details{
  color: #707070;
  font-size: 12px;
}
.pc .recommend_box{
  position: relative;
  width: 100%; 
  z-index: 1;
}
.pc .recommend_box::before{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 662px;
  background: url("../images/pc_bg3.png") no-repeat;
  background-size: 100% 100%;
  transform: translateY(-50%);
}
.product_list_box{
  width: 1200px;
  margin: auto;
}
.pc .recommend_box .recommend_box_content{
  width: 1200px;
  margin: 66px auto 0;
  height: 236px;
  background: url("../images/pc_tit_bg.png") no-repeat;
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 82px;
}
.pc .recommend_box .more{
  width: 220px;
  height: 40px;
  margin: 40px auto;
  border-radius: 10px;
  border: 1px solid #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #333333;
}
.footer_box{
  position: relative;
}
.footer_box::before{
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1386px;
  background: url("../images/txt_bg5.png") no-repeat;
  background-size: 100% 100%;
}
.footer_box .footer_box_content{
  width: 1200px;
  margin: 70px auto 0;
}
.footer_box .footer_box_content .list{
  display: flex;
  flex-wrap: wrap;
}
.footer_box .footer_box_content .list p{
  width: 20px;
  font-size: 18px;
  color: #000000;
  padding: 0 52px 0 12px;
  border-left: 1px solid #000;
  margin-bottom: 44px;
}
.footer_box .footer_box_content .fotter_msg{
  display: flex;
  align-items: center;
}
.footer_box .footer_box_content .fotter_msg img{
  width: 44px;
  height: auto;
}
.footer_box .footer_box_content .fotter_msg span{
  font-size: 16px;
  margin-left: 12px;
}
.line{
  width: 100%;
  height: 1px;
  background-color: #000;
  margin: 30px 0;
}
.fotter_tips{
  text-align: center;
  font-size: 18px;
  padding: 10px 0 30px;
}
.search-fixed{
  background-color: #fff;
}