.solution {
    background-color: #FAFAFA;
}

.box1 {
    padding: 80px 0 120px;
}
.box2 .zh,
.box1 .zh {
    color: #1B74E6;
    line-height: 1;
    text-align: center;
}

.box1 .en {
    font-family: Rany-Bold;
    color: #E6E6E6;
    line-height: 1;
    text-transform: uppercase;
    text-align: center;
}

.box1 .box-t {
    margin-top: 44px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.box1 .box-t a {
    min-width: 200px;
    line-height: 80px;
    background: #FFFFFF;
    box-shadow: 5px 9px 30px 0px rgba(216, 219, 219, 0.3);
    border-radius: 10px;
    font-weight: 300;
    font-size: 24px;
    color: #333333;
    padding: 0 30px;
    text-align: center;
    transition: all .6s;
}

.box1 .box-t a.active,
.box1 .box-t a:hover {
    background-color: #1B74E6;
    color: #fff;
    box-shadow: 5px 9px 30px 0px rgba(28, 121, 231, 0.3);
    border-radius: 10px;
}

.box1 .box-c {
    position: relative;
    margin-top: 65px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.box1 .box-c .l {
    width: 45.71%;
    position: sticky;
    top: 120px;
}

.box1 .box-c .l .pic {
    border-radius: 10px;
}

.box1 .box-c .r {
    width: 51.64%;
}

.box1 .box-c .r .r-title {
    font-weight: bold;
    color: #333333;
    line-height: 1, 33;
}

.box1 .box-c .r .r-des {
    font-weight: 400;
    font-size: 18px;
    color: #333333;
    line-height: 2;
    margin-top: 22px;
}
.box1 .box-c .r .r-des p:not(:last-child){
    margin-bottom: 20px;
}
.box1 .box-c .r .text-title {
    font-weight: 400;
    font-size: 24px;
    color: #1B74E6;
    line-height: 1.25;
    margin-top: 30px;
}

.box1 .box-c .r .list {
    margin-top: 30px;
}

.box1 .box-c .r .list li {
    display: flex;
}
.box1 .box-c .r .list li:not(:last-child) {
    margin-bottom: 18px;
}
.box1 .box-c .r .list li .bullet {
    width: 14px;
    height: 14px;
    background: #1B74E6;
    border-radius: 50%;
    margin-top: 8px;
}
.box1 .box-c .r .list li .text{
    flex: 1;
    margin-left: 17px;
    font-weight: bold;
    font-size: 18px;
    color: #1B74E6;
    line-height: 30px;
}
@media (max-width:1440px) {
    .box1 .box-c .r .list li:not(:last-child){
        margin-bottom: 8px;
    }
    .box1 .box-c .r .r-des,
    .box1 .box-c .r .list{
        margin-top: 15px;
    }
    
}
@media (max-width:1199px) {
    .box1 .box-t a{
        min-width: 160px;
        line-height: 60px;
        font-size: 22px;
    }
    .box1 .box-c{
        margin-top: 45px;
    }
    .box1{
        padding: 80px 0;
    }
    .box1 .box-c .r .text-title{
        font-size: 22px;
    }
    .box1 .box-c .r .list li .text{
        font-size: 16px;
        margin-left: 10px;
    }
    .box1 .box-c .r .list li .bullet{
        margin-top: 10px;
        width: 10px;
        height: 10px;
    }
    .box1 .box-c .r .r-des{
        font-size: 16px;
        line-height: 30px;
    }
}
@media (max-width:1024px) {
    .box1 .box-c .r .r-des, .box1 .box-c .r .list{
        margin-top: 10px;
    }
    .box1 .box-c .r .text-title{
        font-size: 20px;
        margin-top: 20px;
    }
    .box1 .box-t a{
        min-width: 140px;
        line-height: 50px;
        font-size: 20px;
    }
    .box1 .box-c,
    .box1 .box-t{
        margin-top: 40px;
    }
    .box1{
        padding: 70px 0;
    }
    .box1 .box-c{
        flex-direction: column;
    }
    .box1 .box-c .l{
        position:relative;
        top:0;
    }
    .box1 .box-c .r,
    .box1 .box-c .l{
        width: 100%;
    }
    .box1 .box-c .r{
        margin-top: 20px;
    }
}
@media (max-width: 768px) {
    .box1 .box-c,
    .box1 .box-t{
        margin-top: 30px;
    }
    .box1{
        padding: 60px 0;
    }
    .box1 .box-t a{
        min-width: 120px;
        line-height: 45px;
        font-size: 18px;
        padding: 0 20px;
    }
}
@media (max-width: 500px) {
    .box1 .box-t{
        gap: 10px;
    }
    .box1 .box-t a{
        min-width: 100px;
        line-height: 40px;
        font-size: 16px;
        padding: 0 14px;
    }
    .box1 .box-c .r .text-title{
        font-size: 18px;
    }
    .box1 .box-c,
    .box1 .box-t{
        margin-top: 25px;
    }
    .box1{
        padding: 50px 0;
    }
}