.content{
    width: 100%;
    margin-bottom: 0;
}
/***
 * about styles
 **/
.about{
    width: 100%;
    position: relative;
    margin-top: 120px;
}
.about .about-content{
    width: calc( 50% + 300px );
    background: #0070D9;
    padding: 80px 345px 150px calc( 50% - 600px );
    position: relative;
}
.about .about-content .about-line{
    position: absolute;
    top: 90px;
    left: calc( 100% - 960px );
    width: 30px;
    height: 2px;
    background: #FFFFFF;
}
.about .about-content .about-sub-title{
    font-weight: bold;
    font-size: 20px;
    color: #FFFFFF;
    line-height: 22px;
}
.about .about-content .about-title{
    font-weight: bold;
    font-size: 36px;
    color: #FFFFFF;
    line-height: 40px;
    margin-top: 20px;
}
.about .about-content .about-desc{
    font-size: 14px;
    color: #FFFFFF;
    line-height: 21px;
    margin-top: 40px;
}
.about .about-video-wrap{
    width: 50%;
    position: absolute;
    top: -80px;
    right: 0;
    aspect-ratio: 960 / 537;
    border-radius: 12px;
}
.about .about-video-wrap .about-img{
    width: 100%;
    position: relative;
}
.about .about-video-wrap .about-img img{
    width: 100%;
    height: 100%;
}
.about .about-video-wrap .about-img .about-img-icon{
    width: 98px;
    height: 177px;
    position: absolute;
    bottom: -80px;
    left: 202px;
    background: #0070D9;
    cursor: pointer;
}
.about .about-video-wrap .about-img .about-img-icon img{
    width: 46px;
    height: 46px;
    margin: 26px;
}
.about .about-video-wrap .about-img .about-img-icon .about-img-icon-text{
    font-size: 12px;
    color: #FFFFFF;
    line-height: 18px;
    text-align: center;
    margin-top: 22px;
}
.about .about-video-wrap .about-video{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 2;
    background-color: #E6E6E6;
    display: none;
    border-radius: 12px;
    overflow: hidden;
}
.about .about-video-wrap .about-video video{
    width: 100%;
    height: 100%;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .about .about-content{
        width: calc( 50% + 200px);
        padding: 60px 220px 60px calc(50% - 450px);
    }
    .about .about-content .about-line{
        top: 69px;
        left: calc(100% - 695px);
        width: 25px;
    }
    .about .about-content .about-sub-title{
        font-size: 18px;
        line-height: 20px;
    }
    .about .about-content .about-title{
        font-size: 27px;
        line-height: 30px;
        margin-top: 10px;
    }
    .about .about-content .about-desc{
        margin-top: 30px;
    }
    .about .about-video-wrap{
        top: -60px;
    }
    .about .about-video-wrap .about-img .about-img-icon{
        width: 80px;
        height: 160px;
        left: 120px;
    }
    .about .about-video-wrap .about-img .about-img-icon img{
        width: 40px;
        height: 40px;
        margin: 20px;
    }
    .about .about-video-wrap .about-img .about-img-icon .about-img-icon-text{
        margin-top: 20px;
    }
}
@media only screen and (max-width: 1000px) {
    .about .about-content{
        width: calc( 50% + 120px);
        padding: 40px 120px 40px calc(50% - 350px);
    }
    .about .about-content .about-line{
        top: 48px;
        left: calc(100% - 510px);
        width: 20px;
    }
    .about .about-content .about-sub-title{
        font-size: 14px;
        line-height: 16px;
    }
    .about .about-content .about-title{
        font-size: 20px;
        line-height: 22px;
        margin-top: 5px;
    }
    .about .about-content .about-desc{
        margin-top: 10px;
        font-size: 12px;
        line-height: 18px;
    }
    .about .about-content .about-more img{
        width: 24px;
        height: 24px;
    }
    .about .about-video-wrap{
        top: -40px;
    }
    .about .about-video-wrap .about-img .about-img-icon{
        width: 80px;
        height: 160px;
        left: 40px;
    }
    .about .about-video-wrap .about-img .about-img-icon img{
        width: 40px;
        height: 40px;
        margin: 20px;
    }
    .about .about-video-wrap .about-img .about-img-icon .about-img-icon-text{
        margin-top: 20px;
    }
}


/**
 * certificate styles
 ***/
.certificate{
    width: 1200px;
    margin: 80px auto;
}
.certificate .title{
    font-weight: bold;
    font-size: 36px;
    color: #1A1A1A;
    line-height: 41px;
}
.certificate .certificate-list{
    margin: 0 auto;
    position: relative;
    display: flex;
    flex-wrap: wrap;
}
.certificate-list .certificate-item{
    width: 24%;
    margin-right: 1.33%;
    margin-top: 40px;
}
.certificate-list .certificate-item:nth-child(4n){
    margin-right: 0;
}
.certificate-list .certificate-item img{
    width: 100%;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .certificate{
        width: 900px;
        margin: 60px auto;
    }
    .certificate-list .certificate-item{
        margin-top: 30px;
    }
}
@media only screen and (max-width: 1000px) {
    .certificate{
        width: 700px;
        margin: 40px auto;
    }
    .certificate-list .certificate-item{
        margin-top: 20px;
    }
}


/**
 * brands styles
 **/
.brands{
    width: 100%;
    border-top: 1px solid #CCCCCC;
}
.brands .brands-content{
    width: 1200px;
    margin: 0 auto;
}
.brands .brands-content .brands-list{
}
.brands .brands-content .brands-list .brands-item{
    width: 20%;
    aspect-ratio: 240 / 120;
    background: #FFFFFF;
    float: left;
    overflow: hidden;
    cursor: pointer;
}
.brands .brands-content .brands-list .brands-item img{
    width: 100%;
    height: 100%;
    transition: all .5s;
}
.brands .brands-content .brands-list .brands-item:hover img{
    transform: scale(1.1);
}


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




.choose-wrap{
    width: 100%;
    height: 503px;
    padding: 80px 0;
    background: url("../images/choose-bg.webp") no-repeat center center;
    background-size: cover;
}
.choose{
    width: 1200px;
    margin: 0 auto;
}
.choose .choose-left{
    width: 60%;
    float: left;
    position: relative;
}
.choose .choose-line{
    position: absolute;
    top: 10px;
    left: -60px;
    width: 30px;
    height: 2px;
    background: #FFFFFF;
}
.choose .choose-sub-title{
    font-weight: bold;
    font-size: 20px;
    color: #C8C8C8;
    line-height: 22px;
}
.choose .choose-title{
    font-weight: bold;
    font-size: 36px;
    color: #FFFFFF;
    line-height: 54px;
    margin-top: 16px;
}
.choose .choose-list{
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
}
.choose .choose-list .choose-item{
    font-size: 16px;
    color: #C8C8C8;
    line-height: 24px;
    width: 50%;
    margin-top: 20px;
}
.choose .choose-list .choose-item img{
    width: 24px;
    height: 24px;
    margin-right: 8px;
}
.choose .choose-right{
    width: 372px;
    float: right;
    background: #FFFFFF;
    border-radius: 8px;
    padding: 30px 30px;
}
.choose .choose-right .choose-icon{
    width: 80px;
    height: 62px;
}
.choose .choose-right .choose-desc{
    font-size: 12px;
    color: #666666;
    line-height: 20px;
    margin-top: 20px;
}


@media only screen and (min-width: 1000px) and (max-width: 1440px) {
    .choose-wrap{
        height: 400px;
        padding: 60px 0;
    }
    .choose{
        width: 900px;
    }
    .choose .choose-line{
        width: 25px;
        left: -55px;
    }
    .choose .choose-sub-title{
        font-size: 18px;
        line-height: 20px;
    }
    .choose .choose-title{
        font-size: 27px;
        line-height: 30px;
        margin-top: 10px;
    }
    .choose .choose-list{
        margin-top: 10px;
    }
    .choose .choose-list .choose-item{
        font-size: 14px;
        margin-top: 15px;
    }
    .choose .choose-right{
        width: 350px;
        padding: 10px 20px;
    }
    .choose .choose-right .choose-icon{
        width: 60px;
        height: 45px;
    }
    .choose .choose-right .choose-desc{
        margin-top: 5px;
    }
    .choose .choose-right .choose-more{
        margin-top: 10px;
    }
}
@media only screen and (max-width: 1000px) {
    .choose-wrap{
        height: 300px;
        padding: 40px 0;
    }
    .choose{
        width: 700px;
    }
    .choose .choose-left{
        width: 57%;
    }
    .choose .choose-line{
        width: 20px;
        left: -40px;
    }
    .choose .choose-sub-title{
        font-size: 14px;
        line-height: 16px;
    }
    .choose .choose-title{
        font-size: 20px;
        line-height: 22px;
        margin-top: 5px;
    }
    .choose .choose-list{
        margin-top: 10px;
    }
    .choose .choose-list .choose-item{
        font-size: 12px;
        margin-top: 15px;
    }
    .choose .choose-list .choose-item img{
        width: 20px;
        height: 20px;
        margin-right: 0;
    }
    .choose .choose-right{
        width: 300px;
        padding: 5px 10px;
    }
    .choose .choose-right .choose-icon{
        width: 40px;
        height: 31px;
    }
    .choose .choose-right .choose-desc{
        margin-top: 2px;
        line-height: 16px;
    }
    .choose .choose-right .choose-more{
        margin-top: 5px;
    }
    .choose .choose-right .choose-more img{
        width: 24px;
        height: 24px;
        margin-left: 8px;
    }
}