.phone{
  position: relative;
  width: 100%;
  height: 100%;
  overflow-x: hidden;
}

.phone .nav{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 0.9rem;
  padding: 0 0.3rem;
  z-index: 999;
  border-bottom: 1px solid #000;
}
.phone .nav .logo{
  width: auto;
  height: 0.5rem;
}
.phone .nav .nav_i{
  width: 0.3rem;
}
.phone .nav .h1{
  font-weight: bold;
  font-size: 0.3rem; 
  color: black;
  position: relative;
}

.phone .production{
  position: relative;
  padding: 0 0.4rem ;
}
.phone .production::before{
  position: absolute;
  content: '';
  width: 100%;
  height: 100%;
  background-size: 100% 100%;
  top: 0;
  left: 0;
}
.phone .production .tit{
  position: relative;
  text-align: center;
  font-size: large;
  color: #000;
  font-weight: bold;
}
.phone .production .tit::before{
  content: '';
  position: absolute;
  bottom:  -0.2 rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1 rem;
  height: 0.2 rem;
  background: #c11919;
}

.phone .production .nav_list{
  font-size: medium;
}

.phone .production .nav_list p{
  position: relative;
  font-size: medium; 
  width: 5 rem;
  height: 3 rem;
  line-height: 0.8rem;
  text-align: center;
  z-index: 1;
}
.phone .production .nav_list p a{
  color: #000;
}

.phone .production{
  position: relative;
  z-index: 1;
}
.phone .production .search{
  position: relative;
  font-size: small;
  width: 20%;
  height: 0.8 rem;
  border-radius: 0.5 rem;
  margin: 0.2 rem auto;
  border: 1px solid #000;
  align: center;
}
.phone .production .search .input{
  width: 100%;
  left: 100%;
  padding-left: 0.5rem;
  border: none;
  background-color: none;
  outline: none;
  border-radius: 0.18rem;
  background: none;
  height: 100%;
}
.phone .production .search .submit{
  position: absolute;
  top: 50%;
  right: -0.4rem;
  padding: 0 0.1rem;
  height: 1.8rem;
  line-height: 0.8rem;
  border-radius: 0.18rem;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: small;
  transform: translateY(-50%);
}
.phone .production .search::before{
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 0.8rem;
  height: 0.19rem;
  background: url("../images/i_search.png") no-repeat;
  background-size: 100% 100%;
  left: 0.2rem;
}
.phone .s_tit{
  font-size: 0.36rem;
  margin-bottom: 0.5rem;
}


.pop{
  position: fixed;
  top: 1rem;
  right: 0.32rem;
  width: 1.22rem;
  height: 3.5rem;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  background: rgba(0,0,0,06);
  border-radius: 0.1rem;
  display: none;
  z-index: 999;
}
.pop.on{
  display: flex;
}
.pop .item{
  display: flex;
  align-items: center;
  flex: 1;
  color: #fff;

  font-size: 0.2rem;
  -webkit-border-radius: 0.1rem;
  -moz-border-radius: 0.1rem;
  -ms-border-radius: 0.1rem;
  -o-border-radius: 0.1rem;
}


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

}
.top_tit .tit{
  width: 777px;
  height: 245px;
}

.phone .top_box .top_box_content .nav{
  display: flex;

}
.phone .top_box .top_box_content .nav p a{
  color: #000;
}
.phone .top_box .top_box_content .nav p{
  width: 20px;
  height: 150px;
  padding-left: 4px;
  border-left: 6px solid #000;
  font-size: 20px;
  margin-right: 80px;
}
.phone .top_box .top_box_content .nav p.on a{
  color: #c11919;
}
.phone .top_box .top_box_content .nav p.on{
  color: #c11919;
  border-left: 6px solid #c11919;
}


.phone .product_box{
  position: relative;
  width: 100%;
  z-index: 2;
}
.phone .product_box::before{
  content: '';
  /* position: absolute; */
  bottom: 0;
  left: 0;
  width: 100%;
  height: 964px;
  z-index: -1;
}
.phone .product_box .product_box_content{
  width: 600px;
  margin: auto;
}
.phone .product_box .title{
  text-align: center;
  position: relative;
  font-size: 36px;
  font-weight: bold;
  color: #000;
  margin: 110px 0;
}
.phone .product_box .title::before{
  content: '';
  position: absolute;
  left: 50%;
  bottom: -20px;
  width: 76px;
  height: 8px;
  background-color: #c11919;
  transform: translateX(-50%);
}


.phone .product_box .nav_box .search{
  width: 220px;
  height: 36px;
  border: 1px solid #000;
  border-radius: 18px;
  padding: 5px; 
  box-sizing: border-box;
  align: center;
}
.phone .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;
}
.phone .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;
}
.phone .product_box .nav_box .search .searcg_btn{
  position: absolute;
  top: 50%;
  right: 10px;
  height: 100%;
  padding-left: 24px;
  background-color: #000;
  color: #fff;
  font-size: 24px;
  line-height: 36px;
  border-radius: 20px;
  transform: translateY(-50%);
}