.banner{
    position: relative;
}
.banner-txt{
    color: #fff;

    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateY(-50%);

    width: 560px;
    margin-left: 75px;


}   

.banner-txt h2{
    font-size: 47px;
    line-height: 68px;
    font-weight: bold;
}
.banner-txt h3{
    font-size: 28px;
    line-height: 64px;
    margin-top: 6px;
}


.btn{
    font-size: 20px;
    padding: 16px 40px;
    background-color: transparent;
    border: 1px solid #fff;
    
    border-radius: 0;
    color: #fff;
    margin-top: 30px;
    display: inline-block;
    transition: all .35s ease;
}
.btn:hover{
    background-color: #B51D23;
    color: #fff;
    border: 1px solid #B51D23;

}

/* 1 */
.section1{
    padding-top: 100px;
}
.section1-con{
    
    background: #B51D23;
    padding: 50px 0;

}
.section1-con .container{
    display: flex;
    align-items: center;
    justify-content: space-around;
}
.section1-con dl{
    display: inline-block;
    text-align: center;
}
.section1-con dl dt{
    height: 80px;
    overflow: hidden;
}
.section1-con dl dt img{
    max-height: 100%;
}
.section1-con dl dd{
    color: #fff;
    font-size: 16px;
    margin-top: 25px;
    font-weight: bold;
}

/* 2 */
.section2{
    /* padding-top: 80px; */
    padding-top: 102px;
}
.section2-con .container{
    display: flex;
    flex-wrap: wrap;

}
.section2-con dl{
    width: calc(33.33% - 20px);
    margin: 0 10px 60px;
    display: flex;
    align-items: center;

}
.section2-con dl dt{
    margin-right: 15px;
    flex-shrink: 0;

    width: 122px;
    height: 122px;
    background-color: #f6f8fa;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 100%;
    transition: all .35s ease;

}

.section2-con dl dt a{
    display: block;
    width: 100%;
    height: 100%;
}

.section2-con dl dd{
    padding-right: 30px;
}
.section2-con dl dd h2{
    font-weight: bold;
    font-size: 16px;
}
.section2-con dl dd p{
    font-size: 14px;
    color: #666;
    line-height: 22px;
    margin-top: 6px;
}

.section2-con dl:hover dt{
    background-color: #B51D23;
}

/* i1 */
.section2-con dl:nth-child(1) dt a{
    background: url("../images/portfolio-img1.png") no-repeat center;
}
.section2-con dl:nth-child(1):hover dt a{
    background: url("../images/portfolio-img1-white.png") no-repeat center;
}

/* i2 */
.section2-con dl:nth-child(2) dt a{
    background: url("../images/portfolio-img2.png") no-repeat center;
}
.section2-con dl:nth-child(2):hover dt a{
    background: url("../images/portfolio-img2-white.png") no-repeat center;
}
/* i3 */
.section2-con dl:nth-child(3) dt a{
    background: url("../images/portfolio-img3.png") no-repeat center;
}
.section2-con dl:nth-child(3):hover dt a{
    background: url("../images/portfolio-img3-white.png") no-repeat center;
}
/* i4 */
.section2-con dl:nth-child(4) dt a{
    background: url("../images/portfolio-img4.png") no-repeat center;
}
.section2-con dl:nth-child(4):hover dt a{
    background: url("../images/portfolio-img4-white.png") no-repeat center;
}
/* i5 */
.section2-con dl:nth-child(5) dt a{
    background: url("../images/portfolio-img5.png") no-repeat center;
}
.section2-con dl:nth-child(5):hover dt a{
    background: url("../images/portfolio-img5-white.png") no-repeat center;
}
/* i6 */
.section2-con dl:nth-child(6) dt a{
    background: url("../images/portfolio-img6.png") no-repeat center;
}
.section2-con dl:nth-child(6):hover dt a{
    background: url("../images/portfolio-img6-white.png") no-repeat center;
}






/* 3 */
.section3 {
    padding-bottom: 50px;
    padding-top: 40px;
}
.section3 .row{
    margin-left: -15px;
    margin-right: -15px;
    padding-top: 5px;
}
.section3 .item {
    margin: 0 15px;
    transition: all .35s ease;
    width: 33.33%;
}
.section3 .item img{
    transition: all .35s ease;
}

.section3 .item h2{
    font-weight: bold;
    font-size: 16px;
    margin-top: 20px;
    line-height: 22px;
}
.section3 .item p{
    font-size: 14px;
    margin-top: 10px;
    color: #999;
}

/* .section3 .item:hover img{
    transform: scale(1.1);
} */


.section3 .item:hover{
    transform: translateY(-5px);
}

.section3 .item:hover h2{
    color: #B51D23;
}


.row .img-con{
    position: relative;
    height: 0;
    overflow: hidden;
    padding-top: 65%;
    background-color: #f0f0f0;
}
.row .item img{
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
}

@media (max-width: 1440px) {
   

    .banner-txt h2{
        font-size: 30px;
        line-height: 36px;
    }
    .banner-txt h3{
        font-size: 20px;
        line-height: 46px;
    }
    .btn{
        font-size: 16px;
        margin-top: 15px;
    }

    .section1,
    .section2{
        padding-top: 70px;
    }

    .section3 .item h2{
        font-size: 14px;
        line-height: 20px;
    }

    .section2-con dl{
        margin-bottom: 30px;
    }

}


@media (max-width: 1090px) {
    .banner-txt{
        margin-left: 0;
        transform: translate3d(-50%,-50%,0);
        text-align: center;
        width: 94%;
    }
    .banner-txt h2{
        font-size: 18px;
    }

    .banner-txt h3{
        font-size: 15px;
    }

    .banner-txt h2,
    .banner-txt h3{
        line-height: 20px;
    }
    .btn{
        padding: 10px 30px;
        background-color: #B51D23;
        color: #fff;

        border-color: #B51D23;
        font-size: 15px;
        margin-top: 9px;
    }

    .section1{
        padding-top: 30px;
    }
    .section1-con dl dd{
        font-size: 15px;
        margin-top: 15px;
    }
    .section1-con{
        padding: 30px 0;
    }

    .section1-con dl dt {
        height: 60px;
    }
    .section2{
        padding-top: 30px;
    }
    .section2-con dl{
        margin-bottom: 30px;
    }

    .section2-con dl dt{
        width: 80px;
        height: 80px;
    }
    .section2-con dl dt a{
        background-size: 60px auto!important;
    }

    .section3{
        padding-top: 0;
    }

}


@media (max-width: 768px) {
    .section1-con .container{
        flex-wrap: wrap;
        justify-content: flex-start;
        align-items: flex-start;
        
    }
    .section1-con dl{
        width: 50%;
        margin-bottom: 10px;
    }

    .section1-con dl dt{
        height: 40px;
    }

    .section1-con dl dd{
        margin-top: 8px;
    }

    .section2-con dl{
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        margin-bottom: 20px;

    }

    .section3 .item{
        margin-left: 0;
        margin-right: 0;
    }
    .section3 .row{
        margin-left: -0;
        margin-right: -0;
        flex-wrap: wrap;
    }

    .section3 .item{
        width: 100%;
        margin-bottom: 14px;
    }
    .section3 .item p{
        margin-top: 5px;
    }
    .section3 .item h2{
        margin-top: 10px;
    }
    .section2-con dl dt {
        width: 60px;
        height: 60px;
    }
    .section2-con dl dt a{
        background-size: 35px auto!important;
    }

    .section3{
        padding-bottom: 20px;
    }



}