*{
    font-size: 14px;
    font-family: 微软雅黑;
    margin: 0px;
    padding: 0px;
}
a{
    text-decoration: none;
    color: #000;
}
body {
    font-family: Arial, Helvetica, sans-serif;
}
.contents{
    width: 1200px;
    margin: 0px auto;
}
.h30{
    height: 30px;
}
.h50{
    height: 50px;
}
.h80{
    height: 80px;
}
.zt1_title{
    text-align: center;
}
.zt1_tit_bg{
    font-size: 98px;
    color: #EFF0F6;
}
.zt1_tit{
    font-size: 24px;
    color: #da261d;
    position: relative;
    top: -70px;
}
.part1_con >div{
    display: inline-block;
    vertical-align: top;
}
.part1_con >div:nth-child(2){
    width: 600px;
    margin-left: 60px;
}
.part1_con_tit{
    font-size: 20px;
}
.part1_con_bg{
    border-bottom: 2px solid #da261d;
    width: 50px;
    margin-bottom: 40px;
}
.part1_con_des{
    font-size: 16px;
    color: #4a4a4a;
    line-height: 28px;
    margin-bottom: 35px;
}
.part1_con a{
    font-size: 14px;
    color: #da261d;
    line-height: 28px;
    padding: 17px 30px;
    border: #da261d solid 1px;
}
.part_two{
    background: url("../images/zt1_part2_bg.jpg");
    height: 375px;
}
.part_two .zt1_tit_bg{
    color: rgba(255,255,255,0.2);
}
.part_two  .zt1_tit{
    color: #fff;
}
.part_two_des{
    margin-bottom: 35px;
}
.part_two_des .zt1_part2_son{
    display: inline-block;
    vertical-align: top;
    text-align: center;
    margin-left: 208px;
}
.part_two_des>div:nth-child(1) {
    margin-left: 0px;
}
.part_two_des .zt1_part2_son p{
    color: #fff;
    font-size: 14px;
    margin-top: 20px;
}
.part_two .zt1_title{
    height: 150px;
}
.part_two_more{
    text-align: center;
}
.part_two a{
    color: #fff;
    font-size: 14px;
    border: 1px solid #fff;
    line-height: 28px;
    padding: 10px 20px;

}

.part_th_list>div{
    display: inline-block;
    vertical-align: top;
    margin-left: 35px;
    margin-bottom: 35px;
}
.part_th_list>div:nth-child(1){
    margin-left: 0px;
}
.part_th_son{
    width: 270px;
    height: 270px;
}
.part_th_son_top img{
    width: 100%;
}
.part_th_son_top p{
   background-color: #da261d;
    color: #fff;
    text-align: center;
    height: 58px;
    line-height: 58px;
    position: relative;
    top: -58px;
}
.part_th_son_bro{
    background-color: rgba(218,40,33,0.8);
    width: 270px;
    height: 270px;
    padding: 30px 20px;
    position: relative;
    top: -338px;
}
.part_th_son_bro p:nth-child(1){
    height: 125px;
    font-size: 14px;
    color: #fff;
}
.part_th_son_bro p:nth-child(2){
    height: 30px;
    font-size: 14px;
    color: #fff;
    font-weight: bold;
}
.part_th_son_bro{
    opacity: 0;/*可以改变数值*/
    transition: opacity 1s ease-in-out;/*可以改变时间*/
    -moz-transition: opacity 1s ease-in-out;
    -webkit-transition: opacity 1s ease-in-out;
}
.part_th_son:hover .part_th_son_bro{
    opacity: 1.0;/*可以改变数值*/
    transition: opacity .55s ease-in-out;/*可以改变时间*/
    -moz-transition: opacity .55s ease-in-out;
    -webkit-transition: opacity .55s ease-in-out;
    position: relative;
    top: -270px;
}
.part_th_son:hover .part_th_son_top p{
    display: none;
}
.part_th_son_bro>p:nth-child(3) img{
    display: inline-block;
    vertical-align: top;
}

.part_th_more{
    text-align: center;
}
.part_th_more a{
    display: inline-block;
    vertical-align: top;
    border: 1px solid #135DAB;
    width: 260px;
    height: 55px;
    font-size: 14px;
    line-height: 55px;
    padding-left: 30px;
}
.part_th_more a img{
    position: relative;
    top: 0px;
    left: -20px;
}
.part_th_more a:nth-child(2){
    background-color: #135DAB;
    color: #fff;
    margin-inline-start: 35px;
}
.part_th_foot{
    text-align: center;
    font-family: Hiragino Sans GB;
    font-size: 20px;
    color: #da261d;
    margin-top: 50px;
}
.part_four{
    background: url("../images/zt1_part4_bg.jpg");
    height: 512px;
}
.part_four .zt1_tit_bg {
    color: rgba(255,255,255,0.2);
}
.part_four .zt1_tit{
    color: #fff;
}
.part_four_des>div{
    margin-left: 68px;
}
.part_four_des>div:nth-child(1){
    margin-left: 0px;
}
.part_four_son{
    display: inline-block;
    vertical-align: top;
    text-align: center;
}
.part_four_son p{
    font-size: 14px;
    color: #fff;
    text-align: center;
}
.part_four_son span{
    font-size: 19px;
    color: #ffd200;
}
.part_four_footer{
    width: 740px;
    height: 55px;
    margin: 55px auto 30px;
    text-align: center;
    color: #fff;
    font-size: 18px;
    line-height: 55px;
    border: 1px solid #033C7D;
    background-color: #033C7D;

}
.part_four_des br{
    display: none;
}

.nav-bar .main-nav > li {
    font-size: 14px!important;
    font-weight: bold;
    text-transform: uppercase;
}

@media (max-width: 768px) and (min-width: 320px) {
    body{
        margin-left: 5px;
        margin-right: 5px;
    }
    .contents {
        width: 100%;
        margin: 0px auto;
    }
    .zt1_tit_bg{
        font-size: 60px;
    }
    .zt1_tit {
        font-size: 14px;
        color: #da261d;
        position: relative;
        top: -52px;
    }
    .part1_con img{
        width: 100%;
    }
    .part1_con >div:nth-child(2){
        width: 100%;
        margin-left: 0px;
    }
    .part1_con_tit {
        font-size: 16px;
        margin-top: 15px;
    }
    .part1_con >div:nth-child(2) p{
           text-align: center;
    }
    .h80 {
    height: 30px;
    }
    .part1_con_bg{
        margin: 10px auto 20px;
    }
    .part1_con_des{
        font-size: 12px;
    }
    .part1_con a img{
        width: 10%;
    }
    .part1_con a {
        font-size: 12px;
        color: #da261d;
        line-height: 28px;
        padding: 5px 10px;
        border: #da261d solid 1px;
        margin: 0 auto;
        display: block;
        width: 80%;
    }
    .zt1_part2_son img{
        width: 40px;
        height: 30px;
    }
    .zt1_title {
    height: 100px;
    }
    .part_two .zt1_title {
    height: 100px;
    }
    .zt1_part2_son p{
        font-size: 12px!important;
    }
    .part_two_des .zt1_part2_son{
        margin-left: 0px;
        width: 23%;
    }
    .part_th_list>div{
        width: 49%;
        margin-left: 0px;
        margin-bottom: 10px;
        height: 175px;
    }
    .part_th_list .part_th_son_top img{
        height: 175px;
    }
    .part_th_son{
        height: 175px;
    }
    .part_th_son_top p {
        background-color: #da261d;
        color: #fff;
        text-align: center;
        height: 40px;
        line-height: 20px;
        position: relative;
        top: -41px;
        font-size: 12px;
    }
    .part_th_son_bro{
        width: auto;
        padding: 10px 5px;
            height: 174px;
        top: -214px;
    }
    .part_th_son_bro img{
        width: 47%;
    }
    .part_th_son_bro p{
        font-size: 12px!important;
    }
    .part_th_son_bro p:nth-child(1) {
        height: 85px;
    }
    .part_th_son_bro p:nth-child(2) {
    height: 20px;
    font-size: 14px;
    color: #fff;
    font-weight: bold;
    }
    .part_th_son:hover .part_th_son_bro {
        top: -174px;
    }
    .part_th_more a:nth-child(2) {
        background-color: #135DAB;
        color: #fff;
         margin-inline-start: 0px;
    }
    .part_th_more a{
        margin-bottom: 10px;
    }
    .part_four_des>div {
        margin-left: 0px;
        width: 32%;
        margin-bottom: 15px;
    }
    .part_four_des>div img{
        width: 40%;
    }
    .part_four_des br{
        display: block;
    }
    .part_four_des>div:nth-child(1) {
        margin-left: 70px;
    }
    .part_four_son p{
        font-size: 12px;
    }
    .part_four_footer {
        width: 90%;
        height: 40px;
        margin: 17px auto 85px;
        text-align: center;
        color: #fff;
        font-size: 12px;
        line-height: 40px;
        border: 1px solid #033C7D;
        background-color: #033C7D;
    }
    .part_two{
        height: 280px;
    }
    part_four {
        height: 470px;
    }
}