.main{
    background-color: #f5f5f5;
}

.desc{
    font-size: 14px;
}

.desc p{
    line-height: 26px;
    min-height: 14px;
}

.part1{
    position: relative;
    display: flex;
    background: #fff;
    margin-bottom: 30px;
    min-height: 380px;
}

.part1 .left{
    padding: 45px 0 45px 45px;
    width: 450px;
    flex: 0 0 auto;
}

.part1 .left .desc{
    padding-left: 18px;
}

.part1 .right{
    position: absolute;
    height: 100%;
    width: calc(100% -  45px - 450px);
    top: 0;
    right: 0;
}
.part1 .right img{
    display: block;
    width: 100%;
    height: 100%;
}

.part2.block-list{
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.block-list .block img{
    display: block;
    width: 100%;
    height: auto;
}

.part2.block-list .block{
    width: calc(50% - 15px);
    flex: 0 0 auto;
    display: block;
}

.block-list .block .block-info{
    background: #fff;
    padding: 38px 40px;
}

.block-list .block .block-info .tri-title{
    margin-bottom: 12px;
}

.part3 .block-list{
    display: flex;
    margin-right: -30px;
    margin-bottom: 50px;
    align-items: stretch;
}
.part3 .block-list .block .block-info{
    padding: 20px 30px;
}

.part3 .block-list .block{
    width: calc(25% - 30px);
    flex: 0 0 auto;
    margin-right: 30px;
    display: block;
}

@media (max-width: 1280px) and (min-width: 751px) {
    .part3 .block-list .desc{
        line-height: 26px;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        text-overflow: ellipsis;
        overflow: hidden;
        height: 84px;
    }
}

.block-list .more{
    display: block;
    margin-top: 30px;
}

@media (max-width: 1280px) {
    .part1 .left{
        width: 390px;
        padding: 30px;
    }
    .part1 .right{
        width: calc(100% - 390px);
    }
}

@media (max-width: 960px) {
    .part1{
        padding: 30px;
        justify-content: space-between;
    }
    .part1 .left{
        padding: 0;
        width: calc(50% - 15px);
    }
    .part1 .right{
        height: auto;
        position: relative;
        display: flex;
        flex-direction: column;
        justify-content: center;
        flex: 0 0 auto;
        width: calc(50% - 15px);
    }
    .part3 .block-list{
        flex-wrap: wrap;
    }
    .part3 .block-list .block{
        width: calc(50% - 30px);
        flex: 0 0 auto;
    }
}
@media (max-width: 750px) {
    .part1{
        display: block;
        padding: 20px;
        margin-bottom: 20px;
    }
    .part1 .left{
        width: 100%;
        margin-bottom: 20px;
    }
    .part1 .right{
        width: 100%;
    }
    .part2.block-list{
        margin-bottom: 20px;
    }
    .part2.block-list .block{
        width: calc(50% - 10px);
    }
    .part3 .block-list{
        margin-right: -20px;
    }
    .part3 .block-list .block{
        width: calc(50% - 20px);
        margin-right: 20px;
        flex: 0 0 auto;
        margin-bottom: 20px;
    }
    .part3 .block-list .block .block-info,
    .block-list .block .block-info{
        padding: 20px;
    }
}

@media (max-width: 640px) {
    .part2.block-list .block,
    .part3 .block-list .block{
        width: calc(100% - 20px);
        margin-right: 20px;
        margin-bottom: 20px;
    }

    .part2.block-list{
        margin-right: -20px;
        flex-wrap: wrap;
        margin-bottom: 0;
    }
}