.banner_box {
    width: 100%;
    height: 618px;
    background: url(../images/banner.jpg)top center no-repeat;
}

.banner_box .container {
    padding: 193px 0 0;
}

.txt {
    font-size: 24px;
    text-align: center;
    color: #fff;
    margin-bottom: 10px;
}

.txt2 {
    font-size: 0;
    width: 100%;
    height: 152px;
    background: url(../images/txt.png)top center no-repeat;
}

.txt3 {
    font-size: 24px;
    text-align: center;
    color: #fff;
    margin-top: 10px;
}

.box {
    width: 100%;
    height: 2100px;
    background: url(../images/box_bg.jpg)no-repeat;
    background-size: 100% 100%;
}

.box1-ul li {
    float: left;
    width: 380px;
    height: 64px;
    background: url(../images/btn01.png)no-repeat;
    background-size: 100%;
    margin-right: 30px;
    margin-bottom: 28px;
    color: #91f0fe;
    text-align: center;
    line-height: 64px;
}

.box1-ul li:nth-child(3) {
    margin-right: 0;
}

.box1-ul li:nth-child(6) {
    margin-right: 0;
}

.box2 {
    margin-top: 50px;
}

.box2_txt {
    font-size: 48px;
    color: #fff;
    text-align: center;
    font-weight: 550;
    margin-bottom: 20px;
}

.box2_txt span {
    color: #ffff00;
}

.box2_txt1 {
    font-size: 18px;
    color: #fff;
    text-align: center;
}

.box2-ul {
    margin-top: 47px;
}

.box2-ul li {
    float: left;
    height: 272px;
    border: 1px solid #337bfd;
    width: 220px;
    background-color: #060650;
    position: relative;
    margin-right: 20px;
}

.box2-ul li:nth-child(5) {
    margin-right: 0;
}

.box2-ul li>img {
    position: absolute;
    width: 100px;
    height: 100px;
    left: 29%;
    top: 17%;
}

.introduce {
    position: absolute;
    bottom: 15%;
    left: 19%;
    width: 140px;
    height: 40px;
    text-align: center;
    background-color: #064be8;
    border-radius: 20px;
    line-height: 40px;
    color: #fff;
}

.box2-ul li:hover .mask {
    display: block;
}

.mask {
    display: none;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: #f8f8f8;
    z-index: 5;
    box-sizing: border-box;
    padding: 20px;
}

.mask img {
    display: block;
}

.mask p {
    line-height: 60px;
    text-align: center;
    font-size: 18px;
    color: #404040;
}

.box3 {
    margin-top: 80px;
}

.box3-ul {
    margin-top: 47px;
}

.box3-ul li {
    float: left;
    width: 390px;
    margin: 0 4px;
    box-sizing: border-box;
    background: url(../images/box3-ul_bg.png)no-repeat;
    background-size: 100% 100%;
    padding: 20px 20px 0 20px;
    text-align: center;
    color: #fff;
    height: 550px;
}

.box3-ul li:nth-child(3) {
    margin-right: 0;
}

.box3-ul li h4 {
    height: 40px;
    line-height: 40px;
    margin-bottom: 15px;
    font-size: 20px;
    box-sizing: border-box;
    position: relative;
}

.box3-ul li img {
    display: block;
    width: 350px;
    height: 400px;
}

.box3-ul li p {
    line-height: 70px;
    font-size: 20px;
}

.box4 {
    margin-top: 80px;
}

.box4_bg {
    width: 100%;
    height: 456px;
    background: url(../images/box4_bg.png)no-repeat;
    margin-top: 47px;
    padding-top: 47px;
    box-sizing: border-box;
}

.box4_bg p {
    font-size: 18px;
    color: #fff;
    text-align: center;
}

.box4_bg img {
    display: block;
    margin: 20px auto 0;
	width: 240px;
}
.box4_bgm{
    display: none;
}

/* 移动端样式 */

@media only all and (max-width:1200px) {
    .banner_box {
        height: 13rem;
        background-size: auto 100%;
    }

    .banner_box .container {
        padding: 3rem 0;
    }

    .txt {
        font-size: 1rem;
    }

    .txt2 {
        width: 16rem;
        height: 3.5rem;
        background-size: 100% 100%;
        margin: 0 auto;
    }

    .txt3 {
        font-size: .9rem;
    }

    .box {
        width: 100%;
        height: auto;
        background: #000c36;
    }
    .box .container{
        padding: 1rem 0;
    }

    .box1-ul {
        width: 17rem;
        text-align: center;
        margin: 0 auto;
    }

    .box1-ul li {
        width: 8rem;
        height: 2rem;
        line-height: 2rem;
        background-size: 100% 100%;
        display: inline-block;
        margin: .5rem .3rem;
    }

    /* .box1-ul li:nth-child(1) {
        margin-left: 0;
    }
    .box1-ul li:nth-child(3) {
        margin-left: 0;
    }
    .box1-ul li:nth-child(5) {
        margin-left: 0;
    } */
    .box1-ul li:nth-child(2) {
        margin-right: 0;
    }

    .box1-ul li:nth-child(4) {
        margin-right: 0;
    }

    .box1-ul li:nth-child(6) {
        margin-right: 0;
    }

    .box1-ul li:nth-child(3) {
        margin-right: .3rem;
    }

    .box2 {
        margin-top: 1.5rem;
    }

    .box2_txt {
        font-size: 1.2rem;
        margin-bottom: .5rem;
    }

    .box2_txt1 {
        font-size: .6rem;
    }

    .box2-ul {
        margin-top: 1rem;
    }

    .box2-ul li {
        width: 29%;
        height: 7.5rem;
        margin: .3rem 1.9%;
    }

    .box2-ul li:nth-child(3) {
        margin-right: 0;
    }

    .box2-ul li>img {
        width: 2.5rem;
        height: 2.5rem;
        top: 1.5rem;
    }

    .introduce {
        width: 3.5rem;
        height: 1.5rem;
        line-height: 1.5rem;
        left: 20%;
    }

    .mask {
        padding: .3rem;
    }

    .mask p {
        font-size: .7rem;
        line-height: 1.2rem;
    }

    .box3 {
        margin-top: 2rem;
    }
    .box3-ul{
        margin-top: 1rem;
    }
    .box3-ul li {
        float: none;
        width: 90%;
        margin: .5rem auto;
        padding: .5rem .5rem 0 .5rem;
        height: auto;
    }
    /* .box3-ul li:nth-child(2){
        height: 24.5rem;
    } */
    .box3-ul li:nth-child(3) {
        margin: 0 auto;
    }

    .box3-ul li h4 {
        height: 1rem;
        line-height: 1rem;
        margin-bottom: .5rem;
        font-size: .8rem;
    }

    .box3-ul li img {
        width: 100%;
        height: auto;
    }

    .box3-ul li p {
        line-height: 2rem;
        font-size: .7rem;
    }
    .box4{
        margin-top: 2rem;
    }
    .box4_bg{
        display: none;
    }
    .box4_bgm{
        display: block;
        width: 90%;
        height: auto;
        background: url(../images/box4_bgm.png)no-repeat;
        background-size: 100% 100%;
        margin: 1rem auto 0;
        padding: .3rem;
		text-align: center;
        box-sizing: border-box;
    }
    .box4_bgm p{
        font-size: .8rem;
        color: #fff;
        width: 90%;
        margin: .5rem auto;
    }
    .gzh{
        width: 50%;
        height: 50%;
        margin: .5rem auto;
    }
    .gzh img{
        display: block;
        width: 100%;
        height: 100%;
    }
}