ul,li{ list-style:none}
@media (min-width:650px){
    .business{
        max-width: 1920px;
        margin: 0 auto;
        margin-top: 70px;
    }
    .bg{
        max-width: 1920px;
        height: 350px;
        margin: 0 auto;
        text-align: center;
    }
    .guanyu{
        padding-top: 130px;
        color: #fff;
        font-size: 28px;
    }
    .guanyu1{
        text-align: left;
        padding-left: 200px;
        padding-top: 195px;
        color: #fff;
        font-size: 16px;
    }
    .guanyu1 a{
        color: #fff;
        font-size: 16px;
    }
    .back{
        max-width: 1920px;
        height: 50px;
        background-color: #666;
        color: #fff;
        text-align: center;
        line-height: 50px;
    }
    .cen{
        max-width: 1200px;
        margin: 0 auto;
        text-align: center;
        /* padding-bottom: 100px; */
    }
    .cen1{
        color: #002fa7;
        font-size: 16px;
        font-weight: 600;
        margin-top: 80px;
    }
    .cen2{
        font-size: 46px;
        color: #222;
        font-weight: 600;
        margin-top: 15px;
    }
    .par{
        margin-top: 50px;
        display: inline-block;
        vertical-align: middle;
        text-align: left;
        font-size: 16px;
        color: #444;
        line-height: 30px;
    }


    .un{
        max-width: 1200px;
        margin: 0 auto;
        padding-top: 70px;
        padding-bottom: 70px;
        display: flex;
    }
    .un1{
        width: 399px;
        height: 280px;
        text-align: center;
        border-left: 1px solid #aaaaaa;
        border-right: 1px solid #aaaaaa;
    }
    .un-t{
        padding-top: 55px;
        display: flex;
        justify-content: center; /* 水平居中 */
        align-items: center;     /* 垂直居中 */
    }
    .un-t1{
        font-size: 80px;
        color: #002fa7;
        font-weight: 600;
    }
    .un-t2{
        font-size: 18px;
        color: #002fa7;
        font-weight: 600;
        margin-top: 35px;
    }
    .un-c{
        margin-top: 15px;
        font-size: 18px;
        color: #444;
        font-weight: 600;
    }
    .un-u{
        color: #666;
        line-height: 30px;
        width: 80%;
        margin: 0 auto;
        margin-top: 20px;
    }
    .btm{
        max-width: 1920px;
        margin: 0 auto;
        height: 700px;
    }
    .btm1{
        max-width: 1200px;
        margin: 0 auto;
        text-align: center;
    }
    .btm-t{
        font-size: 30px;
        color: #fff;
        font-weight: 600;
        padding-top: 75px;
        margin-bottom: 60px;
    }
    .btms{
        display: flex;
    }
    .btm-c{
        width: 280px;
        height: 340px;
        background-color: #fff;
        border-radius: 10px;
        margin-left: 15px;
    }
    .btm-c img{
        padding-top: 35px;
        margin-bottom: 25px;
    }
    .btm-c1{
        font-size: 20px;
        color: #676767;
        font-weight: 600;
        margin-bottom: 40px;
    }
   .btm-c2{
        font-size: 16px;
        color: #676767;
        width: 80%;
        margin: 0 auto;
        line-height: 30px;
   }
   .center{
    max-width: 1920px;
    height: 680px;
    margin: 0 auto;
    background-color: #f4f4f4;
   }
   .center1{
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
   }
   .center-t{
    padding-top: 65px;
    margin-bottom: 45px;
    font-size: 30px;
    color: #444;
   }
   .center-c{
    display: flex;
   }
   .center-cl{
    width: 600px;
    height: 70px;
    background-color: #002fa7;
    text-align: center;
    line-height: 70px;
    font-size: 18px;
    color: #fff;
    font-weight: 600;
   }
   .center-cl1{
    width: 600px;
    height: 370px;
    background-color: #fff;
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
   }
   .center-cl1s{
    display: flex;
    margin-left: 50px;
    margin-top: 30px;
   }
   .center-cl1s1{
    width: 8px;
    height: 8px;
    border-radius: 8px;
    margin-top: 6px;
    margin-right: 12px;
    background-color: #002fa7;
   }
   .center-cl1s2{
    width: 180px;
    text-align: left;
   }
}

@media (max-width:450px){
    .business{
        max-width: 450px;
        margin: 0 auto;
        margin-top: 70px;
    }
     .bg{
        max-width: 450px;
        height: 200px;
        margin: 0 auto;
    }
    .guanyu{
        width: 100%;
        text-align: center;
        padding-top: 90px;
        color: #fff;
        font-size: 28px;
    }
    .guanyu1{
        margin-left: 10px;
        margin-top: 85px;
        color: #aaaaaa;
        font-size: 16px;
    }
    .guanyu1 a{
        color: #fff;
        font-size: 16px;
    }
    .back{
        max-width: 450px;
        height: 50px;
        background-color: #666;
        color: #fff;
        text-align: center;
        line-height: 50px;
    }
    .cen{
        max-width: 450px;
        margin: 0 auto;
        text-align: center;
        padding-bottom: 20px;
    }
    .cen1{
        color: #002fa7;
        font-size: 16px;
        font-weight: 600;
        margin-top: 80px;
    }
    .cen2{
        font-size: 46px;
        color: #222;
        font-weight: 600;
        margin-top: 15px;
    }
    .par{
        width: 90%;
        margin-top: 50px;
        display: inline-block;
        vertical-align: middle;
        text-align: left;
        font-size: 16px;
        color: #444;
        line-height: 30px;
    }

    .un{
        max-width: 450px;
        margin: 0 auto;
        padding-top: 70px;
        padding-bottom: 70px;
        /* display: flex; */
    }
    .un1{
        width: 399px;
        height: 280px;
        text-align: center;
        /* border-left: 1px solid #aaaaaa;
        border-right: 1px solid #aaaaaa; */
    }
    .un-t{
        padding-top: 55px;
        display: flex;
        justify-content: center; /* 水平居中 */
        align-items: center;     /* 垂直居中 */
    }
    .un-t1{
        font-size: 80px;
        color: #002fa7;
        font-weight: 600;
    }
    .un-t2{
        font-size: 18px;
        color: #002fa7;
        font-weight: 600;
        margin-top: 35px;
    }
    .un-c{
        margin-top: 15px;
        font-size: 18px;
        color: #444;
        font-weight: 600;
    }
    .un-u{
        color: #666;
        line-height: 30px;
        width: 80%;
        margin: 0 auto;
        margin-top: 20px;
    }

    .btm{
        max-width: 450px;
        margin: 0 auto;
        padding-bottom: 50px;
        /* height: 700px; */
    }
    .btm1{
        max-width: 450px;
        margin: 0 auto;
        text-align: center;
    }
    .btm-t{
        font-size: 30px;
        color: #fff;
        font-weight: 600;
        padding-top: 75px;
        margin-bottom: 60px;
    }
    .btms{
        /* display: flex; */
    }
    .btm-c{
        width: 280px;
        height: 340px;
        background-color: #fff;
        border-radius: 10px;
        margin: 0 auto;
        margin-top: 20px;
    }
    .btm-c img{
        padding-top: 35px;
        margin-bottom: 25px;
    }
    .btm-c1{
        font-size: 20px;
        color: #676767;
        font-weight: 600;
        margin-bottom: 40px;
    }
   .btm-c2{
        font-size: 16px;
        color: #676767;
        width: 80%;
        margin: 0 auto;
        line-height: 30px;
   }
   .center{
    max-width: 450px;
    /* height: 680px; */
    margin: 0 auto;
    background-color: #f4f4f4;
   }
   .center1{
    max-width: 450px;
    margin: 0 auto;
    text-align: center;
   }
   .center-t{
    padding-top: 65px;
    margin-bottom: 45px;
    font-size: 30px;
    color: #444;
   }
   .center-c{
    /* display: flex; */
   }
   .center-cl{
    max-width: 450px;
    height: 70px;
    background-color: #002fa7;
    text-align: center;
    line-height: 70px;
    font-size: 18px;
    color: #fff;
    font-weight: 600;
   }
   .center-cl1{
    max-width: 450px;
    /* height: 370px; */
    padding-bottom: 50px;
    background-color: #fff;
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
   }
   .center-cl1s{
    display: flex;
    margin-left: 50px;
    margin-top: 30px;
   }
   .center-cl1s1{
    width: 8px;
    height: 8px;
    border-radius: 8px;
    margin-top: 6px;
    margin-right: 12px;
    background-color: #002fa7;
   }
   .center-cl1s2{
    width: 180px;
    text-align: left;
   }
}