/***
 * about styles
 **/
.about-content{
    max-width: 1200px;
    margin: 0 auto;
    font-size: 16px;
    color: #333333;
    line-height: 30px;
}
.anchor{
    height: 120px;
    margin-top: -120px;
    visibility: hidden;
}
.about_title{
    font-weight: bold;
    font-size: 40px;
    text-align: center;
    color: #262626;
    line-height: 44px;
    margin: 80px 0 40px;
}
.about-content .about-description{
    font-size: 18px;
    color: #666666;
    line-height: 30px;
    text-align: center;
}
.about-content .culture{
    margin: 60px auto;
}
.about-content .culture .culture_list{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    background: #FFFFFF;
    box-shadow: 0 27px 46px 1px rgba(0,0,0,0.19);
}
.about-content .culture .culture_list .culture_item{
    width: 33.3%;
    height: 270px;
    cursor: pointer;
    text-align: center;
    padding: 38px 30px;
}
.about-content .culture .culture_list .culture_item:nth-child(2){
    background-size: 100% 100%;
}
.about-content .culture .culture_list .culture_item .culture_item_icon{
    width: 68px;
    height: 68px;
    margin: 0 auto 20px;
    transition: all ease 0.3s;
}
.about-content .culture .culture_list .culture_item .culture_item_icon img{
    width: 100%;
    height: 100%;
}
.about-content .culture .culture_list .culture_item .culture_item_title{
    font-weight: bold;
    font-size: 20px;
    color: #10263B;
    line-height: 22px;
    margin: 20px 0;
    text-align: center;
}
.about-content .culture .culture_list .culture_item .culture_item_desc{
    font-size: 14px;
    color: #1A1A1A;
    line-height: 24px;
    text-align: center;
}
.about-content .culture .culture_list .culture_item:nth-child(2) .culture_item_title,
.about-content .culture .culture_list .culture_item:nth-child(2) .culture_item_desc{
    color: #FFFFFF;
}
.about-content .culture .culture_list .culture_item:hover .culture_item_icon{
    transform: rotateY(180deg);
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .about-content{
        width: 900px;
    }
    .about_title{
        font-size: 36px;
        line-height: 48px;
        margin: 40px 0 30px;
    }
    .about-content .about-description{
        margin-top: 30px;
        font-size: 16px;
        line-height: 24px;
    }
    .about-content .culture{
        margin: 50px auto;
    }
    .about-content .culture .culture_list .culture_item{
        padding: 28px 20px;
    }
}
@media only screen and (max-width: 1000px) {
    .about-content{
        width: 700px;
    }
    .about_title{
        font-size: 30px;
        line-height: 45px;
        margin: 30px 0 20px;
    }
    .about-content .about-description{
        margin-top: 20px;
        font-size: 14px;
        line-height: 20px;
    }
    .about-content .culture{
        margin: 40px auto;
    }
    .about-content .culture .culture_list .culture_item{
        padding: 18px 10px;
    }
}



/**
* choose  styles
***/
.choose-warp{
    width: 100%;
    padding: 20px 0 80px;
    background-size: 100% 100%;
}
.choose-warp .choose{
    width: 1200px;
    margin: 0 auto;
}
.choose .choose-list{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}
.choose .choose-list .choose-item{
    width: 380px;
    height: 189px;
    background-color: #FFFFFF;
    margin-top: 30px;
    cursor: pointer;
    padding: 30px 20px;
    border: 1px solid #D6D6D6;
}
.choose .choose-list .choose-item:nth-child(-n+3){
    margin-top: 0;
}
.choose .choose-list .choose-item .choose-item-icon{
    width: 58px;
    height: 58px;
    overflow: hidden;
    float: left;
}
.choose .choose-list .choose-item .choose-item-icon img{
    width: 100%;
    height: 100%;
}
.choose .choose-list .choose-item .choose-item-icon img.active{
    display: none;
}
.choose .choose-list .choose-item .choose-item-text{
    width: 260px;
    margin-left: 20px;
    float: left;
}
.choose .choose-list .choose-item .choose-item-title{
    font-weight: bold;
    font-size: 16px;
    color: #333333;
    line-height: 16px;
}
.choose .choose-list .choose-item .choose-item-desc{
    font-size: 14px;
    color: #666666;
    line-height: 24px;
    margin-top: 16px;
}
.choose .choose-list .choose-item:hover .choose-item-icon img.normal {
    display: none;
}
.choose .choose-list .choose-item:hover .choose-item-icon img.active {
    display: inline-block;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .choose-warp .choose{
        width: 900px;
    }
    .choose .choose-list .choose-item{
        width: 285px;
        height: 150px;
        padding: 10px;
    }
    .choose .choose-list .choose-item .choose-item-icon{
        width: 40px;
        height: 40px;
    }
    .choose .choose-list .choose-item .choose-item-text{
        width: 208px;
        margin-left: 15px;
    }
    .choose .choose-list .choose-item .choose-item-desc{
        line-height: 20px;
        margin-top: 10px;
    }
}
@media only screen and (max-width: 1000px) {
    .choose-warp{
        padding-bottom: 20px;
    }
    .choose-warp .choose{
        width: 700px;
    }
    .choose .choose-list .choose-item{
        width: 48%;
        height: 125px;
        padding: 10px;
    }
    .choose .choose-list .choose-item,
    .choose .choose-list .choose-item:nth-child(-n+3){
        margin-top: 10px;
    }
    .choose .choose-list .choose-item:nth-child(-n+2){
        margin-top: 0;
    }
    .choose .choose-list .choose-item .choose-item-icon{
        width: 50px;
        height: 50px;
    }
    .choose .choose-list .choose-item .choose-item-text{
        width: 249px;
        margin-left: 15px;
    }
    .choose .choose-list .choose-item .choose-item-desc{
        line-height: 20px;
        margin-top: 10px;
    }

}


/**
 * certificate styles
 ***/
.certificate_warp{
    width: 100%;
    position: relative;
}
.certificate_warp .about_bg{
    width: 100%;
    height: 192px;
    background: #0070D9;
    position: absolute;
    bottom: 0;
    z-index: -1;
}
.certificate_warp .certificate{
    width: 1200px;
    margin: 0 auto;
    position: relative;
    padding-bottom: 40px;
}
.certificate .swiper-slide img{
    width: 100%;
}
.certificate .swiper-button-prev,
.certificate .swiper-button-next{
    width: 42px;
    height: 42px;
    border: 1px solid #FFFFFF;
    border-radius: 50%;
    top: 75%;
}
.certificate .swiper-button-prev{
    left: -62px;
}
.certificate .swiper-button-next{
    right: -62px;
}
.certificate .swiper-button-prev::after,
.certificate .swiper-button-next::after{
    font-size: 20px;
    color: #FFFFFF;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .certificate_warp .certificate{
        width: 900px;
    }
    .certificate_warp .about_bg{
        height: 160px;
    }
    .certificate .swiper-button-prev,
    .certificate .swiper-button-next{
        width: 36px;
        height: 36px;
    }
    .certificate .swiper-button-prev{
        left: -50px;
    }
    .certificate .swiper-button-next{
        right: -50px;
    }
}
@media only screen and (max-width: 1000px) {
    .certificate_warp .certificate{
        width: 700px;
    }
    .certificate_warp .about_bg{
        height: 130px;
    }
    .certificate .swiper-button-prev,
    .certificate .swiper-button-next{
        width: 36px;
        height: 36px;
    }
    .certificate .swiper-button-prev{
        left: -50px;
    }
    .certificate .swiper-button-next{
        right: -50px;
    }
}


/**
 * brands styles
 ***/
.brands{
    width: 1200px;
    margin: 60px auto;
}
.brands .about_brand{
    width: 100%;
}
.brands .about_brand img{
    width: 100%;
}

@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .brands{
        width: 900px;
    }
}
@media only screen and (max-width: 1000px) {
    .brands{
        width: 700px;
    }
}