body {
    padding: 0px;
    margin: 0px;
    background: #EDF4F6;
  }
     
    .main_a {
        position: relative;
        overflow: hidden;
        width: 1400px;
        height: 510px;

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





     /* 标题样式 */
     .mian-a-a {
        text-align: center;
        width: 646px;
        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: 205px;
        width: 483px;
        height: 249px;
        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: 176px;
height: 30px;
font-size: 22px;
font-family: PingFang SC-Bold, PingFang SC;
font-weight: bold;
color: #FFFFFF;
line-height: 0px;
position: absolute;
left: 632px;
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;
     
  
    }