body {
    padding: 0px;
    margin: 0px;
    background: #EDF4F6;
  }

.main_a {
    position: relative;
    overflow: hidden;
    width: 1400px;
    height: 520px;

    background: #FFFFFF;
    opacity: 1;
    border-radius: 0px;
    margin: 0 auto;
    position: relative;
}





 /* 标题样式 */
 .mian-a-a {
    text-align: center;
    width: 682px;
    height: 50px;
    opacity: 1;
    margin: 0 auto;
margin-top: 140px;
margin-bottom: 60px;
    /* background: #FFFFFF; */
}

.mian-span-a {
height: 28px;
    width: 159px;
    float: left;
    margin-top: 11px;
}

.mian-span-b {
    height: 28px;
    width: 159px;
    float: left;
    margin-top: 11px;
}

.mian-span-d {
    width: 338px;
    height: 50px;
    font-size: 36px;
    font-family: PingFang SC;
    font-weight: bold;
    line-height: 0px;
    color: #333333;
    opacity: 1;

}
.mian-p-a {
    margin: 0 20px;
    width: auto;
    height: 50px;
    font-size: 40px;
    float: left;
    display: inline-block;
    text-align: center;
    line-height: 40px;
   
}

.mian-span-c {
    margin-top: 30px;
    display: inline-block;
    text-align: center;
    width: 152px;
    height: 50px;
    font-size: 36px;
    font-family: PingFang SC;
    font-weight: bold;
    line-height: 0px;
    color: #333333;
    opacity: 1;
}
 /* 标题样式结束 */

 .main_a .title {
    position: absolute;
    float: left;
    width: 117px;
    left: 0px;
    top: 0px;
}

.title h3 {
    vertical-align: middle;
    width: 151px;
    height: 40px;
    font-size: 28px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #333333;
    line-height: 0px;
    margin: 51px 0 0 100px; 
}

.title i {
    vertical-align: middle;
    display: inline-block;
    width: 39px;
    height: 35px;
    opacity: 1;
margin-top: -2px;
    background-repeat: no-repeat;
    background-size: cover;
    background-image: url("../img/组\ 39.png");
}

.p-1 {
    position: absolute;
    float: left;
    left: 100px;
    top: 152px;
    width: 483px;
    height: 353px;
    font-size: 18px;
    font-family: PingFang SC;
    font-weight: 500;
    line-height: 36px;
    color: #333333;
    opacity: 1;
    /* text-indent: 2em; */
    text-align: justify;

}




.main_a .img{
    position: absolute;
    width: 643px;
    height: 381px;
    top: 139px;
    left: 657px;
}


.main_b {
    position: relative;
    width: 1400px;
    height: 535px;
    margin: 0 auto;
    overflow: hidden;
 background: #FFFFFF;
}
.main_b h1{
    width: 198px;
height: 30px;
font-size: 22px;
font-family: PingFang SC-Bold, PingFang SC;
font-weight: bold;
color: #FFFFFF;
line-height: 0px;

position: absolute;
left: 620px;
top: 324px;
z-index: 1;
}
.main_b img {
    position: absolute;
    display: block;
    width: 440px;
    height: 412px;
    left: 503px;
    top: 120px;
}

.main_b ul li {
    width: 72px;
    height: 25px;
    font-size: 18px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #333333;
    line-height: 0px;
}

.main_b ol li:nth-child(1) {
    position: absolute;
    left: 441px;
    top: 138px;
}

.main_b ol li:nth-child(2) {
    position: absolute;
    left: 371px;
    top: 220px;
}

.main_b ol li:nth-child(3) {
    position: absolute;
    left: 346px;
    top: 335px;
}

.main_b ol li:nth-child(4) {
    position: absolute;
    left: 369px;
    top: 435px;
}

.main_b ol li:nth-child(5) {
    position: absolute;
    left: 441px;
    top: 513px;
}

.main_b ul li:nth-child(1) {
    position: absolute;
    left: 932px;
    top: 138px;
}

.main_b ul li:nth-child(2) {
    position: absolute;
    left: 1006px;
    top: 220px;
}

.main_b ul li:nth-child(3) {
    position: absolute;
    left: 1026px;
    top: 335px;
}

.main_b ul li:nth-child(4) {
    position: absolute;
    left: 1006px;
    top: 435px;
}

.main_b ul li:nth-child(5) {
    position: absolute;
    left: 932px;
    top: 513px;
}

.main_b ol li {
    width: 72px;
    height: 25px;
    font-size: 18px;
    font-family: PingFang SC-Bold, PingFang SC;
    font-weight: bold;
    color: #333333;
    line-height: 0px;
}







    .main_c {
        width: 1400px;
        height: auto;
        margin: 0 auto;
        overflow: hidden;
        background:#FFFFFF;
    }

    .main_c ul {
        text-align: center;
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
        width: auto;
        height: 350px;
        margin: 0 auto;
        margin-top: 50px;
    }

    .main_c ul li {
        width: 350px;
        height: 302px;
        background: #FFFFFF;
        box-shadow: 0px 12px 24px 1px rgba(136,136,136,0.1600);
        margin-left: 75px;  
    
    }
    .main_c ul li:nth-child(1) {
   
        margin-left: 0px;  
    
    }

    .main_c ul li h1 {
        margin: 16px 0 0 124px;
        width: 96px;
        height: 33px;
        font-size: 24px;
        font-family: PingFang SC-Bold, PingFang SC;
        font-weight: bold;
        color: #488EFF;
        line-height: 0px;
   
    }

    .main_c ul li p {
        width: 223px;
        height: 55px;
        font-size: 18px;
        font-family: PingFang SC-Medium, PingFang SC;
        font-weight: 500;
        color: #333333;
        line-height: 30px;
     
        margin: 0px 0 0 64px;
    }

    .main_c ol {
        text-align: center;
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
        width: auto;
    height:350px;
        margin: 0 auto;
        margin-top: 30px;
    }

    .main_c ol li {
        width: 350px;
        height: 302px;
        background: #FFFFFF;
        box-shadow: 0px 12px 24px 1px rgba(136,136,136,0.1600);
     margin-left: 75px;  
    }
    .main_c ol li:nth-child(1) {
   
        margin-left: 0px;  
    
    }
    li {
        list-style: none;
    }

    .main_c ol li h1 {
        margin: 16px 0 0 124px;
        width: 96px;
        height: 33px;
        font-size: 24px;
        font-family: PingFang SC-Bold, PingFang SC;
        font-weight: bold;
        color: #488EFF;
        line-height: 0px;
   
    }

    .main_c ol li p {
        width: 223px;
        height: 55px;
        font-size: 18px;
        font-family: PingFang SC-Medium, PingFang SC;
        font-weight: 500;
        color: #333333;
        line-height: 30px;
     
        margin: 0px 0 0 64px;
    }

    .main_c ul li img {
        width: 115px;
        height: 135px;
        margin: 27px 0 0 0px;
       
   
    }

    .main_c ol li img {
        width: 115px;
        height: 135px;
        margin: 27px 0 0 0px;
     
  
    }