@charset "utf-8";
/* CSS Document */

.img_top {
    background: url(../img/top/bg_img_top.png) left top no-repeat;
    background-size: cover;
    text-align: center;
    padding-top: 40px;
    width: 100%;
    overflow: hidden;
    padding-bottom: 30px;
}

.top_des {
    font-size: 23px;
    color: #0f3e80;
    font-weight: bold;
    width: 100%;
    text-align: center;
    line-height: 140%;
    padding-top: 70px;
    padding-bottom: 70px;
}

.banner_sp {
    display: none
}

.top_banner_page {
    width: 100%;
    overflow: hidden;
	text-align: center;
}

.top_service {
    width: 100%;
    overflow: hidden;
}

.inner_top_sv {
    width: 100%;
    overflow: hidden;
}

.inner_top_sv ul li {
    width: 552px;
    float: left;
    margin-right: 46px;
    margin-top: 40px;
}

.inner_top_sv ul li:nth-child(2n+2) {
    margin-right: 0;
}

.inner_top_sv ul li a {
    display: block;
    position: relative;
    overflow: hidden;
}

.sv_des {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    background: rgba(15, 62, 128, 0.8);
    color: #fff;
    font-size: 18px;
    padding: 20px 20px 20px 25px;
    line-height: 160%;
    max-height: 120px;
}

.inner_top_sv ul li:nth-child(3) .sv_des, .inner_top_sv ul li:nth-child(4) .sv_des {
    padding-top: 30px;
}

.inner_top_sv ul li img {
    -webkit-transition: all .5s;
    -moz-transition: all .5s;
    -o-transition: all .5s;
    transition: all .5s;
}

.inner_top_sv ul li a:hover img {
    -ms-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -webkit-transform: scale(1.2);
    -o-transform: scale(1.2);
    transform: scale(1.2);
}

.btn_top_sv {
    width: 100%;
    overflow: hidden;
    margin-top: 60px;
    display: block;
    text-align: center;
}
.btn_top_sv a{
    display: inline-block
}
.text_letters{
    width: 100%;
    overflow: hidden;
    font-size: 14px;
    line-height: 180%;
    margin-top: 60px;
}
@media screen and (max-width:767px) {
   
   .img_top{
       padding-top: 30px;
   } 
   .top_des{
       padding-top: 30px;
       padding-bottom: 30px;
       padding-left: 10px;
       padding-right: 10px;
   }
   .inner_top_sv ul li{
       width: 100%;
       float: left;
       margin-right: 0;
       padding-left: 10px;
       padding-right: 10px;
   }
   .inner_top_sv ul li img{
       width: 100%;
   }
   .btn_top_sv{
       margin-top: 30px;
       padding-left: 10px;
       padding-right: 10px;
   }
   .text_letters{
       margin-top: 30px;
       padding-left: 10px;
       padding-right: 10px;
   }
}
@media screen and (max-width:640px) {

    .sv_des{
        position: relative;
        max-height:inherit;
        background: #0f3e80;
        font-size: 16px;
        padding: 15px;
        margin-top: -1px;
    }
    .inner_top_sv ul li{
        margin-top: 20px;
       
    }
 
}
@media screen and (max-width:480px) {
    .top_des{
        font-size: 20px;
    }
}