.main{
    background-color: #f5f5f5;
    padding-bottom: 50px;
}

.part1{
    background-color: #fff;
    margin-bottom: 20px;
    padding: 30px 40px;
}

.part1 h2{
    font-size: 30px;
    margin-bottom: 15px;
}

.part1 .desc{
    font-size: 14px;
}

.part1 p{
    line-height: 26px;
    margin-bottom: 12px;
}

.part2{
    background-color: #fff;
    margin-bottom: 50px;

    display: flex;
    align-items: stretch;
}

.part2>*{
    flex: 0 0 auto;
}

.part2>.left{
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;

    padding: 40px 90px 40px 40px;
    width: 40%;
}

.part2 .left .tri-title{
    font-size: 18px;
    margin-bottom: 15px;
}

.part2 .left .info{
    font-size: 14px;
}

.part2 .left .info p{
    line-height: 23px;
    padding-top: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #d9d9d9;
}

.part2>.right{
    width: 60%;
    position: relative;
}

.part2>.right img{
    display: block;
    width: 100%;
    height: auto;
}

.part3{
    background-color: #fff;
}

@media (max-width: 960px) {
    .part2{
        flex-direction: column;
    }

    .part2>.left{
        width: 100%;
        padding-right: 40px;
    }

    .part2>.right{
        width: 100%;
    }
    .part1{
        padding: 20px 30px;
    }
    .part2>.left{
        padding: 30px;
    }
}

@media (max-width: 640px) {
    .part1{
        padding: 20px;
    }
    .part1 h2{
        font-size: 24px;
    }
    .part2>.left{
        padding: 20px;
    }
    .part2{
        margin-bottom: 30px;
    }
}