.part_1 {position: relative;z-index: 9;background: #fff;}
.part_1 .title{margin-bottom: 2rem;}
.part_1 .tt{ padding-bottom: 1.5rem;margin-bottom: 1.5rem;border-bottom:1px solid #c7c7c7;position: relative;}
.part_1 .tt .cn{ font-size: 2rem; color: #404040; font-weight: bold;}
.part_1 .company {padding: 3rem 0 2rem;}
.part_1 .company .intro{ color: #767676; line-height: 2rem;text-indent: 2rem;text-align: justify;}
.part_1 .company .intro p {font-size:1rem;}
.part_1 .company img{ width: 100%;}

@media  screen and (max-width: 765px){
    .part_1 .tt .cn { font-size: 1.5rem;}
    .part_1 .tt{ padding-bottom: 1rem;margin-bottom: 1rem;}
}