@media screen and (min-width: 1025px){
  #product_list_pc{
    display: block;
  }
  #product_list_phone{
    display: none;
  }
  .product_title_swiper{
    display: none;
  }
  .product_title{
    display: block;
  }
  #product{
    width: 100%;
    margin: 100px auto 130px;
  }
  .product{
    width: 82%;
    min-width: 1200px;
    margin: auto;
  }
  .product_title{
    width: 100%;
    min-width: 1200px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .product_title li{
    width: 186px;
    height: 47px;
    /* border: 1px solid #636363; */
    line-height: 47px;
    text-align: center;
    font-size: 16px;
    letter-spacing: 2px;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;
  }
  .product_title li a{
    display: block;
    width: 150px;
    height: 47px;
    /* border: 1px solid #636363; */
    line-height: 47px;
    text-align: center;
    font-size: 16px;
    letter-spacing: 2px;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;
  }
  .product_title li:hover a{
    background-color: #636363;
    border: none !important;
    color: #ffffff !important;
  }
  .product_title_act a{
    background-color: #636363;
    border: none !important;
    color: #ffffff !important;
  }
  .product_list{
    width: 100%;
    display: none;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-top: 45px;
  }
  .product_list_act{
    display: flex;
  }
  .product_list li{
    width: 31%;
    min-width: 380px;
    margin-right: 2%;
    margin-bottom: 50px;
  }
  .product_list li a:hover .product_list_title{
    opacity: 0.66; 
  }
  .product_list li a:hover .product_list_title div span::before{
    width: 5%;
  }
  .product_list li a:hover .product_list_title div span::after{
    width: 5%;
  }
  .product_list li:nth-child(3n){
    margin-right:0 !important;
  }
  .product_list li a{
    width: 100%;
    display: block;
    position: relative;
  }
  .product_list li a img{
    width: 100%;
    display: block;
  }
  .product_list_title{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgb(0, 0, 0);
    opacity:0;    
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .5s;
  }
  .product_list_title div{
    width: 96%;
    height: 94.5%;
    min-width: 366px;
    min-height: 262px;
    border: 1px solid #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .product_list_title div span{
    padding: 5px 13px;
    font-size: 16px;
    font-weight:400;
    letter-spacing: 3px;
    color: #ffffff;
    /* border-top: 1px solid #ffffff;
    border-bottom: 1px solid #ffffff;  */
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
  }
  .product_list_title div span::before{
    content: '';
    width: 100%;
    height: 1px;
    background-color: #ffffff;
    position: absolute;
    top: 0;
    transition: width .5s;
    text-align: center;
  }
  .product_list_title div span::after{
    content: '';
    width: 100%;
    height: 1px;
    background-color: #ffffff;
    position: absolute;
    bottom: 0;
    transition: width .5s;
  }


  .nav{
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 60px auto 0;
  }
  .nav li{
    padding: 10px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 22px;
    font-size: 20px;
    cursor: pointer;
  }
  .nav_act{
    background-color: rgba(229,229,229,1);
  }
  .next{
    margin-right: 0px !important;
  }
  .pre img,.next img{
    width: 25px;
    /* height: 18px; */
    display: block;
  }
}
@media (max-width: 1024px) and (min-width: 751px){
  #product_list_pc{
    display: block;
  }
  #product_list_phone{
    display: none;
  }
  .product_title_swiper{
    display: none;
  }
  .product_title{
    display: block;
  }
  #product{
    width: 100%;
    margin: 1rem auto 1.3rem;
  }
  .product{
    width: 82%;
    min-width: 9.2rem;
    margin: auto;
  }
  .product_title{
    width: 100%;
    min-width: 9.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .product_title li{
    width: 1rem;
    height: 0.47rem;
    /* border: 0.01rem solid #636363; */
    line-height: 0.47rem;
    text-align: center;
    font-size: 0.16rem;
    letter-spacing: 0.02rem;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;
  }
  .product_title li a{
    display: block;
    width: 1rem;
    height: 0.47rem;
    /* border: 0.01rem solid #636363; */
    line-height: 0.47rem;
    text-align: center;
    font-size: 0.16rem;
    letter-spacing: 0.02rem;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;
  }
  .product_title li:hover a{
    background-color: #636363;
    border: none !important;
    color: #ffffff !important;
  }
  .product_title_act a{
    background-color: #636363;
    border: none !important;
    color: #ffffff !important;
  }
  .product_list{
    width: 100%;
    display: none;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-top: 0.45rem;
  }
  .product_list_act{
    display: flex;
  }
  .product_list li{
    width: 31%;
    min-width: 2.8rem;
    margin-right: 1%;
    margin-bottom: 0.5rem;
  }
  .product_list li:hover .product_list_title{
    display: flex;
  }
  .product_list li:nth-child(3n){
    margin-right:0 !important;
  }
  .product_list li a{
    width: 100%;
    display: block;
    position: relative;
  }
  .product_list li a img{
    width: 100%;
    display: block;
  }
  .product_list_title{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.66);
    align-items: center;
    justify-content: center;
    display: none;
  }
  .product_list_title div{
    width: 96%;
    height: 94.5%;
    min-width: 3.66rem;
    min-height: 2.62rem;
    border: 0.01rem solid #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .product_list_title div span{
    padding: 0.05rem 0.13rem;
    font-size: 0.16rem;
    font-weight:400;
    letter-spacing: 0.03rem;
    color: #ffffff;
    border-top: 0.01rem solid #ffffff;
    border-bottom: 0.01rem solid #ffffff; 
  }


  .nav{
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0.6rem auto 0;
  }
  .nav li{
    width: 0.22rem;
    height: 0.22rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.22rem;
    font-size: 0.14rem;
    cursor: pointer;
  }
  .nav_act{
    background-color: rgba(229,229,229,1);
  }
  .next{
    margin-right: 0rem !important;
  }
  .pre img,.next img{
    width: 0.2rem;
    height: 0.18rem;
    display: block;
  }
}
@media screen and (max-width: 750px){
  .pc{
    display: none !important;
  }
  #product_list_pc{
    /* display: none; */
  }
  #product_list_phone{
    display: none;
  }
  .product_title_swiper{
    width: 6.9rem;
    height: 1rem;
    display:none;
  }
  .swiper-container{
    width: 100%;
    height: 100%;
  }
  .product_title_swiper .swiper-container .swiper-wrapper .swiper-slide{
    font-size: 0.28rem;
    text-align: center;
    transition: all .8s;
    line-height: 1rem;
    white-space: nowrap;
  }
  .swiper-slide-active{
    font-size: 0.35rem !important;
    font-weight: bold;
  }
  #product{
    width: 100%;
    margin: 1rem auto 1.3rem;
  }
  .product{
    width: 6.9rem;
    margin: auto;
  }
  .product_title{
    width: 6.9rem;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
  }
  .product_title li{
    width: 33%;
    height: 0.6rem;
    line-height: 0.6rem;
    text-align: center;
    font-size: 0.16rem;
    letter-spacing: 0.02rem;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;

  }
  .product_title li:nth-child(4n){
    margin-right:0;
  }
  .product_title li a{
    display: block;

    height: 0.6rem;
    line-height: 0.6rem;
    text-align: center;
    font-size: 0.25rem;
    letter-spacing: 0.02rem;
    color: #636363;
    cursor: pointer;
    box-sizing: border-box;
    white-space: nowrap;
  }
  /* .product_title li:hover a{
    background-color: #636363;
    border: none !important;
    color: #ffffff !important;
  } */
  .product_title_act a{
    background-color: #636363;
    color: #ffffff !important;
  }
  .product_list_a{
    display: none;
  }
  .product_list{
    width: 100%;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-top: 0.45rem;
  }
  .product_list_act{
    display: flex !important;
  }
  .product_list li{
    width: 31%;
    min-width: 3.1rem;
    margin-right: 1%;
    margin-bottom: 0.5rem;
  }
  .product_list li:hover .product_list_title{
    /* display: flex; */
  }
  .product_list li:nth-child(3n){
    margin-right:0 !important;
  }
  .product_list li a{
    width: 100%;
    display: block;
    position: relative;
  }
  .product_list li a img{
    width: 100%;
    display: block;
  }
  .product_list_title{
    width: 100%;
    height: 100%;


    background-color: rgba(0, 0, 0, 0.66);

  }

  .product_list_title div span{

    font-size: 0.26rem;
    font-weight:400;
    letter-spacing: 0.03rem;
    color: #ffffff;
display: block;
    text-align: center;
    line-height: 0.5rem;
  }


  .nav{
    display: flex;
    align-items: center !important;
    justify-content: center !important;
    margin: 0.6rem auto 0 !important;
  }
  .nav li{
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-right: 0.22rem !important;
    font-size: 0.4rem !important;
    cursor: pointer !important;
    padding: 0.1rem 0.2rem !important;
  }
  .nav_act{
    background-color: rgba(229,229,229,1) !important;
  }
  .next{
    margin-right: 0rem !important;
  }
  .pre img,.next img{
    width: 0.6rem !important;
    display: block !important;
  }
}