/* 导航pc样式 */
  .product_nav {
    display: flex;
    justify-content: space-between;
    background-color: #1F2122;
    color: #FFF;
    font-size: 16px;
    line-height: 1;
    z-index: 20;
    position: sticky;
    width: 100%;
    top: 0;
    
    height: 60px;
    padding: 0 4.166667vw;
    box-sizing: border-box;
  }
 
  .product_nav>div {
    display: flex;
    align-items: center;
    position: relative;
  }
  
  .product_nav>div span {
    display: inline-block;
    width: 1.25vw;
    height: 1.25vw;
    border: 1px solid #fff;
    border-radius: 50%;
    margin-left: 1.04166vw;
    position: relative;
    cursor: pointer;
    display: none;
  }
  
  .product_nav>div span::before {
    content: "";
    position: absolute;
    width: 0.5vw;
    height: 0.5vw;
    border-right: 1px solid #fff;
    border-bottom: 1px solid #fff;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
  }
  
  .product_nav>div span.reverse::before {
    top: 60%;
    transform: translate(-50%, -50%) rotate(225deg);
  }
  
  .product_nav>div>div {
    position: absolute;
    top: 1.85vw;
    padding: 0.5vw 1vw;
    left: -1vw;
    background-color: #1F2122;
    border-radius: 1vw;
    border: 1px solid;
    display: none;
    min-width: 18vw;
    border-color: rgba(255, 255, 255, .3);
  }
  
  .product_nav>div>div a {
    margin-top: 0.5vw;
    display: block;
  }
  
  .product_nav>div>div a:nth-child(1) {
    margin-top: 0;
  }
  
  .product_nav ul {
    display: flex;
    align-items: center;
    
  }
  
  .product_nav ul>li {
    margin-right: 1.66666vw;
    list-style: none;
  
  }
  
  .product_nav ul>li:nth-last-child(1) {
    margin-right: 0;
  }
  
  .product_nav ul>li>a {
    position: relative;
    color: #fff;
    -webkit-text-decoration: none;
    text-decoration: none;
  }
  
  .product_nav ul>li>a::before {
    content: '';
    display: inline-block;
    height: 2px;
    background-color: #ffffff;
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 100%;
    transition-property: right;
    transition-duration: 0.3s;
    transition-timing-function: ease-out;
  }
  .product_nav ul>li>.noLine::before {
    content: '';
    display: none;
    height: 2px;
    background-color: #ffffff;
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0%;
    transition-property: right;
    transition-duration: 0.3s;
    transition-timing-function: ease-out;
  }
  
  .product_nav ul>li>a.active {
    cursor: default;
  }
  
  .product_nav ul>li>a.active:before {
    right: 0;
  }
  
  .product_nav ul>li>a:hover:before {
    right: 0;
  }

  .product_nav .product-nav-select{
    position: relative;
    cursor: pointer;
    height: 100%;
}
.product_nav .product-nav-select > a::before{
  content: '';
  display: inline-block;
  height: 2px;
  background-color: #ffffff;
  position: absolute;
  bottom: 16px;
  /* top: 42; */
  left: 0;
  right: 100%;
  transition-property: right;
  transition-duration: 0.3s;
  transition-timing-function: ease-out;
}
 .product-nav-bodymask{
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    position: fixed;
     top: 0;
    left: 0;
    z-index: 19 !important;
    backdrop-filter: blur(9px) !important;
    display: none;
    will-change: transform !important; 
    -webkit-backdrop-filter: blur(9px);
}

.product_nav .product-nav-select img{
    width: 10px;
    display: inline-block;
    margin-left: 5px;
    transition: .3s;
}
.product_nav .product-nav-select-list{
    position: absolute;
    top: 100%;
    left: 0;
    display: flex;
    flex-wrap: wrap;
    z-index: 10;
    display: none;
    padding-top: 20px;
}
.product_nav .product-nav-select-list > a{
    height: 35px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    font-size: 16px;
    line-height: 1.25;
    transition: .3s;
    color: #fff;
    -webkit-text-decoration: none;
    text-decoration: none;
}

.product_nav .stop-scroll{
    overflow: hidden !important;
}
.product_nav .product-nav-select > a{
    display: flex;
    align-items: center;
    height: 100%;
}
.product_nav .active img{
    transform: rotate(180deg) !important;
}
.product_nav .active .product-nav-select-list{
    display: block !important;
}
 .bodymask-active{
    display: block !important;
}
@media screen and (min-aspect-ratio: 11/10){
    .product_nav .product-nav-select:hover img{
        transform: rotate(180deg);
    }
    .product_nav .product-nav-select:hover .product-nav-select-list{
        display: block;
    }
    .product_nav .product-nav-select-list > a:hover{
        height: 45px;
         font-size: 20px;
    }
}

  
  @media screen and (max-aspect-ratio: 11/10) {
    .titleHide{
      display: none !important;
    }
    .product_nav {
      font-size: 14px;
      top: 0;
      padding: 0;
      height: auto;
      flex-direction: column;
     
    }
    .product_nav>div {
      width: 100%;
      justify-content: space-between;
      padding-left: 4.16666vw;
      padding-right: 4.16666vw;
      height: 40px;
      box-sizing: border-box;
    }
    .product_nav>div span {
      width: 5.55555vw;
      height: 5.55555vw;
      display: none;
    }
    .product_nav>div span::before {
      width: 2vw;
      height: 2vw;
    }
    .product_nav ul {
      /* position: relative; */
      padding-left: 24px;
      padding-right: 24px;
      height: 40px;
      border-top: 1px solid;
      border-color: rgba(103, 103, 103);
      overflow-y: auto;
      scrollbar-width: none; 
      /* width: 100%; */
    }
    .product_nav ul .gradient{
      position: fixed;
      height: 40px;
      width: 100%;
      z-index: 50;
    }
    .product_nav ul::before {
      position: fixed;
      content: '';
      width: 24px;
      height: 40px;
      left: 0;
      z-index: 50;
      background: linear-gradient(90.00deg, rgb(31, 33, 34),rgba(31, 33, 34, 0) 100%);
    }
    .product_nav ul::after {
      position: fixed;
      content: '';
      width: 24px;
      height: 40px;
      right: 0;
      z-index: 50;
      background: linear-gradient(270.00deg, rgb(31, 33, 34),rgba(31, 33, 34, 0) 100%);
    }
    .product_nav ul .gradient .gradientLeft {
      left: -24px;
      height: 100%;
      position: absolute;
      top: 0;
      width: 22px;
      
      background: linear-gradient(90.00deg, rgb(31, 33, 34),rgba(31, 33, 34, 0) 100%);

      
    }
    .product_nav ul .gradient .gradientRight {
      right: 24px;
      height: 100%;
      position: absolute;
      top: 0;
      width: 22px;
      background: linear-gradient(270.00deg, rgb(31, 33, 34),rgba(31, 33, 34, 0) 100%);
    }
    .product_nav ul>li {
      
      list-style: none;
      white-space: nowrap;
      
    }
    .product_nav ul>li:not(:last-child) {
      margin-right: 5vw;
     
      
    }
    .product_nav ul::-webkit-scrollbar {
      display: none;
    }
    .product_nav ul>li>a::before {
      display: none;
    }
    
    .product_nav ul>li>a.active {
      border-bottom: 1px solid #fff;
    }
    .product_nav .product-nav-select > a::before{
      
      content: '';
      display: inline-block;
      height: 1px;
      background-color: #ffffff;
      position: absolute;
      bottom: 23%;
      
      left: 0;
      right: 100%;
      transition-property: right;
      transition-duration: 0.3s;
      transition-timing-function: ease-out;
    }
    .product_nav .product-nav-select-list > a {
        width: 100%;
        border-bottom: 1px solid #fff;
    }
    .product_nav .product-nav-select-list {
        position: absolute;
        top: calc(100% + 20px);
        width: 100vw;
        box-sizing: border-box;
        padding: 0 25px;
    }
    .product_nav .product-nav-select {
        position: static;
    }
}