@charset "UTF-8";



/*air-features*/
.air-features .collecting{
    padding: 45px 0;
    background-color: #f7f7f7;
}
.air-features  .title{
    margin-bottom: 30px;
}
.air-features  .title h3{
    color: #0071af;
    font-size: 24px;
}
.air-features .collecting > div{
    width: 1400px;
    margin: auto;
}
.air-features .collecting p{
    margin-bottom: 20px;
    color: #333;
    font-size: 14px ;
}
.air-features .collecting .pic{
    font-size: 0;
}
.air-features .collecting .pic div{
    width: 32%;
    overflow: hidden;
}
.air-features .collecting .pic div + div{
    margin-left: 2%;
}
.air-features .collecting .pic div:hover img{
    transform: scale(1.1);
}
.air-features .collecting .pic div img{
    transition: .3s;
}
.air-features .unit{
    width: 1400px;
    margin: auto;
    padding: 50px 0;
}
.air-features .unit ul{
    font-size: 0;
}
.air-features .unit ul li{
    width: 32%;
    height: 500px;
    padding: 20px 10px;
    background-color: #fafafa;
    box-sizing: border-box;
    vertical-align: middle;
}
.air-features .unit ul li + li{
    margin-left: 2%;
}
.air-features .unit ul li:nth-child(1){
    background-image: url("../img/bgbg.png");
    background-position: 90% bottom;
    background-repeat: no-repeat;
}
.air-features .unit ul li div{
    display: inline-block;
    height: 43px;
    margin-bottom: 25px;
    margin-left: -10px;
    padding-left:45px ;
    padding-right: 20px;
    background-color: #c1c1c1;
    color: white;
    font-size: 24px;
    line-height: 43px;
}
.air-features .unit ul li div:before{
    content: '';
    position: absolute;
    top: 50%;
    left: 15px;
    width: 8px;
    height: 8px;
    margin-top: -6px;
    border: 2px solid #c1c1c1;
    background-color: white;
    box-shadow: 0px 0px 0px 1px #fff;
    border-radius: 50%;
}
.air-features .unit ul li:hover div{
    background-color: #0071af;
}
.air-features .unit ul li:hover div:before{
    border-color: #0d6fb8;
}
.air-features .unit ul li p{
    margin-bottom: 30px;
    color: #333;
    font-size: 14px;
    line-height: 25px;
}
.air-features .transmission{
    padding-top: 20px;
    padding-bottom: 60px;
    text-align: center;
}
.air-features .transmission p{
    color: #333;
    font-size: 14px;
    line-height: 25px;
}

/*air-situation*/
.air-situation .auto {
    width: 1400px;
    margin: auto;
    padding-top: 70px;
}
.air-situation .auto .title{
    margin-bottom: 45px;
}
.air-situation .auto .title h3{
    margin-bottom: 20px;
    color: #0071af;
    font-size: 24px;
}
.air-situation .auto .title i{
    width: 28px;
    height: 42px;
    background: url("../img/down3.png") no-repeat center/100%;
}
.air-situation .auto p{
    width: 1000px;
    margin: auto;
    color: #333;
    font-size: 14px;
    line-height: 25px;
    text-align: center;
}
.air-situation .auto ul {
    font-size: 0;
    margin: 30px 0 90px;
}
.air-situation .auto ul li{
    overflow: hidden;
    width: 24%;
}
.air-situation .auto ul li + li{
    margin-left: 1%;
}
.air-situation .auto ul li img{
    transition: .3s;
}
.air-situation .auto ul li:hover img{
    transform: scale(1.1);
}


/*air-technology*/
.air-technology .process{
    padding: 90px 0 120px;
    background-color: #fafafa;
}
.air-technology .process ul{
    width: 1400px;
    margin: auto;
    font-size: 0;
    text-align: center;
}
.air-technology .process ul li{
    width: 255px;
    height: 230px;
    border: 1px solid #0d6fb8;
    box-sizing: border-box;
    vertical-align: top;
}
.air-technology .process ul li + li{
    margin-left:125px ;
}
.air-technology .process ul li:before{
    content: '1';
    position: absolute;
    top: -70px;
    left: 50%;
    width: 140px;
    margin-left: -70px;
    background-color: #fafafa;
    color: rgba(204,204,204,.3);
    font-size: 100px;
    text-align: center;
}
.air-technology .process ul li:nth-child(2):before{
    content: '2';
}
.air-technology .process ul li:nth-child(3):before{
    content: '3';
}
.air-technology .process ul li:nth-child(4):before{
    content: '4';
}
.air-technology .process ul li:after{
    content: '';
    position: absolute;
    bottom: -25px;
    left: 50%;
    width: 70px;
    height: 49px;
    margin-left:-35px ;
    background:#fafafa url("../img/gou.png") no-repeat center;
}

.air-technology .process ul li:hover:before{
    color: rgba(0,113,175,.3);
}
.air-technology .process ul li:hover:after{
    background-image: url("../img/gou1.png");
}
.air-technology .process ul li h3{
    top: -15px;
    left: 50%;
    color: #0d6fb8;
    font-size: 20px;
    transform: translateX(-50%);
}
.air-technology .process ul li p{
    width: 90%;
    margin: 70px auto;
    color: #333;
    font-size: 14px;
    line-height: 25px;
    text-align: center;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
}
.air-technology .auto {
    width: 1400px;
    margin: auto;
    padding-top: 70px;
}
.air-technology .auto .title{
    margin-bottom: 45px;
}
.air-technology .auto .title h3{
    margin-bottom: 20px;
    color: #0071af;
    font-size: 24px;
}
.air-technology .auto p{
    width: 1000px;
    margin: auto;
    color: #333;
    font-size: 14px;
    line-height: 25px;
    text-align: center;
}
.air-technology .auto ul {
    font-size: 0;
    margin: 30px 0 60px;
}
.air-technology .auto ul li{
    overflow: hidden;
    width: 24%;
}
.air-technology .auto ul li + li{
    margin-left: 1%;
}
.air-technology .auto ul li img{
    transition: .3s;
}
.air-technology .auto ul li:hover img{
    transform: scale(1.1);
}
.air-technology .server {
    width: 1400px;
    margin: auto;
    padding-bottom: 110px;
    color: #333;
    font-size: 14px ;
}
.air-technology .server .title{
    margin-bottom: 45px;
}
.air-technology .server .title h3{
    margin-bottom: 20px;
    color: #0071af;
    font-size: 24px;
}
.air-technology .server p{
    margin-bottom: 30px;
    line-height: 25px;
}
.air-technology .server .pic {
    font-size: 0;
}
.air-technology .server .pic > div{
    width: 50%;
}


/*air-composition*/
.air-composition .collecting{
    padding: 45px 0;
    background-color: #f7f7f7;
}
.air-composition  .title{
    margin-bottom: 30px;
}
.air-composition  .title h3{
    color: #0071af;
    font-size: 24px;
}
.air-composition .collecting > div{
    width: 1400px;
    margin: auto;
}
.air-composition .collecting p{
    margin-bottom: 20px;
    color: #333;
    font-size: 14px ;
}
.air-composition .collecting .pic{
    font-size: 0;
}
.air-composition .collecting .pic div{
    width: 32%;
    overflow: hidden;
}
.air-composition .collecting .pic div + div{
    margin-left: 2%;
}
.air-composition .collecting .pic div:hover img{
    transform: scale(1.1);
}
.air-composition .collecting .pic div img{
    transition: .3s;
}
.air-composition .with-water{
    padding: 50px 0;
    background: url("../img/gfda.png") no-repeat center/cover;
}
.air-composition .with-water p{
    width: 750px;
    margin:0 auto 30px;
    color: #333;
    font-size: 14px;
    line-height: 25px;
    text-align: center;
}
.air-composition .with-water .pic{
    width: 1000px;
    margin: auto;
    font-size: 0;
}
.air-composition .with-water .pic div{
    width: 49%;
}
.air-composition .with-water .pic div + div{
    margin-left: 2%;
}
.air-composition .maintenance{
    padding-top: 50px;
    padding-bottom: 60px;
}
.air-composition .maintenance > div{
    width: 1400px;
    margin: auto;
}
.air-composition .title{
    margin-bottom: 35px;
}
.air-composition  .title h3{
    color: #0071af;
    font-size: 22px;
}
.air-composition .maintenance > div .p,
.air-composition .maintenance > div p{
    color: #333;
    font-size: 14px;
}
.air-composition .maintenance > div .p{
    margin-bottom: 20px;
}
.air-composition .maintenance > div p {
    line-height: 25px;
}
.air-composition .maintenance > div p + p{
    text-indent: 1em;
}
.air-composition .maintenance ul{
    margin-top: 20px;
    font-size: 0;
}
.air-composition .maintenance ul li{
    width: 24%;
}
.air-composition .maintenance ul li + li{
    margin-left: 1%;
}
.air-composition .maintenance ul li a{
    display: none;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,.8);
    font-size: 14px;
}
.air-composition .maintenance ul li:hover a{
    display: block;
}
.air-composition .maintenance ul li a div{
    top: 50%;
    left: 50%;
    width: 100%;
    color: #fff;
    text-align: center;
    transform: translate(-50%,-50%);
}