main .name {
    font-size: 34px;
    font-family: SourceHanSansCN-Regular;
    color: #333333;
    padding-bottom: 40px;
    border-bottom: 1px solid #E0E0E0;
}

main .subtitle {
    font-size: 24px;
    font-family: SourceHanSansCN-Regular;
    color: #333F;
    margin-bottom: 13px;
    margin-top: 55px;
}
main .subimg{
    display:grid;
    grid-template-columns:49% 49%;
    grid-gap:20px;
}
main img{ height:auto}
main  {
    font-size: 16px;
    font-family: SourceHanSansCN-Regular;
    color: #666666;
    line-height: 32px;
    text-align: justify;
}

main img {
    width: auto;
    max-width: 100%;
    margin: 37px auto 0;
    display: block;
}
.box {
    display: grid;
    justify-content: space-between;
    grid-template-columns: repeat(2,49%);
    margin-top: 50px;
    flex-wrap: wrap;
    text-align: center;
    color: #888;
    grid-row-gap: 48px;
}
.box .top{
    background-color: #F3F3F3;
    padding: 20px;
    box-sizing: border-box;
    margin-bottom: 20px;
}
.box .one  {
    height: fit-content;
}
.box .one img{
    margin-top: 0;
    margin-bottom: 20px;
}
@media screen and (max-width:1440px) {
    main .name {
        font-size:30px ;
    }
}
@media screen and (max-width:1280px) {
    main .subtitle {
        font-size: 20px;
    }
    main .subtitle {
        margin-top: 40px;
    }
    main .name {
        font-size:26px;
    }
}
@media screen and (max-width:1024px) {
    main .subtitle {
        font-size: 16px;
    }
    main {
        font-size: 14px;
        line-height: 28px;
    }
    main .subtitle {
        margin-top: 30px;
    }
    main .name {
        margin-bottom: 30px;
        font-size:20px ;
        padding-bottom: 20px;
    }
    main img {
        width: 100%;
        margin-top: 30px;
    }
    .box {
        grid-template-columns: repeat(1,100%);
        grid-row-gap: 30px;
    }
}
@media screen and (max-width:991px) {
    main .subimg{
        display:block;
    }
}