* {
    margin: 0;
    padding: 0;
    font-family: "微软雅黑";
}

.clear {
    clear: both;
}

.hidden {
    display: none;
}
.introduce_cto{
    position: relative;
}
.introduce_cto .swiper-container{
    height: 1206px;
}
.i_part1 {
    background: url("../images/introduce/part1/bg01.jpg");
    width: 750px;
    height: 1206px;
}

.i_part1_img {
    width: 750px;
    margin: 0 auto;
}

.i_part2 {
    position: relative;
    background: url("../images/introduce/part2/bg02.jpg") no-repeat;
    width: 750px;
    height: 1206px;
}

.part2_x {
    position: absolute;
    bottom: 66px;
    width: 750px;
}

.i_part2_img {
    background: url("../images/introduce/part2/part2_logo.png") no-repeat;
    width: 249px;
    height: 17px;
    margin: 0 auto;
}

.i_part3 {
    background: url("../images/introduce/part3/part3_bg.jpg") no-repeat;
    width: 750px;
    height: 1206px;
    padding-top: 460px;
    box-sizing: border-box;
}

.i_part3_x {
    margin: 0 auto;
    width: 630px;
    font-size: 26px;
    color: white;
    text-indent: 56px;
    line-height: 44px;
}

.i_part4 {
    background: url("../images/introduce/part4/part4_bg.jpg") no-repeat;
    width: 750px;
    height: 1206px;
    position: relative;
}

.i_part4_o {
    padding: 110px 0 70px;
}

.i_part4_address {
    background: url("../images/introduce/part4/part4_address.png") no-repeat;
    width: 403px;
    height: 114px;
    margin: 0 auto;
}

.i_part4_map {
    background: url("../images/introduce/part4/part4_map.jpg") no-repeat;
    width: 750px;
    height: 658px;
    margin: 0 auto;
}
.part4_bottom{
    position: absolute;
    bottom: 70px;
    width: 750px;
}
.i_part4_img{
    background: url("../images/introduce/part4/part4_bottomlogo.png") no-repeat;
    width: 248px;
    height: 17px;
    margin: 0 auto;
}
.i_part5{
    background: url("../images/introduce/part5/part5_bg.jpg") no-repeat;
    width: 750px;
    height: 1206px;
    position: relative;
}
.i_part5_o{
    padding: 105px 0 116px;
}
.i_part4_contactus{
    background: url("../images/introduce/part5/part5_contactus.png")no-repeat;
    width: 292px;
    height: 121px;
    margin: 0 auto;
}
.i_part5_code{
    width: 275px;
    margin: 0 auto;
}
.i_part5_code img{
    width: 275px;
    height: 276px;
}
.i_part5_txt{
    text-align: center;
    color: rgb(245,245,245);
    font-size: 36px;
    line-height: 92px;
}
.i_part5_x{
    text-align: center;
    color: rgb(245,245,245);
    font-size: 32px;
    line-height: 44px;
    padding-top: 150px;
}
.part5_bottom{
    position: absolute;
    bottom: 70px;
    width: 750px;
}
.i_part5_img{
    background: url("../images/introduce/part4/part4_bottomlogo.png") no-repeat;
    width: 248px;
    height: 17px;
    margin: 0 auto;
}
.i_part6{
    background: url("../images/introduce/part5/part5_bg.jpg") no-repeat;
    width: 750px;
    height: 1206px;
    position: relative;
}
.part6_bottom{
    position: absolute;
    bottom: 70px;
    width: 750px;
}
.i_part6_img{
    background: url("../images/introduce/part4/part4_bottomlogo.png") no-repeat;
    width: 248px;
    height: 17px;
    margin: 0 auto;
}
.i_part6_code{
    background: url("../images/introduce/part6/part6_code.jpg")no-repeat;
    width: 444px;
    height: 443px;
    margin: 0 auto;
}
.i_part6_txt{
    text-align: center;
    color: rgb(245,245,245);
    font-size: 44px;
}
@-webkit-keyframes guideTop {
    0% {
        -webkit-transform: translateY(0.312em);
        opacity: 0;
    }
    60% {
        -webkit-transform: translateY(-0.8em);
        opacity: 1;
    }
    100% {
        -webkit-transform: translateY(-1.25em);
        opacity: 0;
    }
}
@-webkit-keyframes music {
    from{-webkit-transform:rotate(0deg)}
    to{-webkit-transform:rotate(360deg)}
}
.arrow{
    position: absolute;
    width: 50px;
    bottom: 20px;
    left: 0;
    right: 0;
    margin: 0 auto;
    -webkit-animation: guideTop 1.2s infinite;
}
#sound_control{
    position: fixed;
    z-index: 9999;
    top: 20px;
    right: 20px;
    width: 50px;
}
.music{
    -webkit-animation: music 4s linear infinite;
}