@charset "UTF-8";
*{
    margin: 0;
    padding:0;
}
ul li{
    list-style: none;
    float:left;
}
a{
    text-decoration: none;
    color:#fff;
}
/* 导航 */
.main{
    width:100%;
    margin:0 auto;
    overflow: hidden;
}
.main_header{
    position:relative;
    width:100%;
    height:100%;
    min-height: 785px;
    background: url(../img/about_banner.png)no-repeat;
    background-size:cover;
    overflow: hidden;
}
.main_header_nav{
    position: relative;
    margin-top:25px;
    height:42px;
    font-size:12px;
    cursor:pointer;
}
.main_header_nav_center{
    width:53px;
    height:42px;
    margin:0 auto;
}
.main_header_nav_left{
    height: 42px;
    line-height: 42px;
    position: absolute;
    left: 0;
    top: 0;
    padding-left:68px;
}
.main_header_nav_left li{
    margin-right:80px;
}
.main_header_nav_right{
    height: 42px;
    line-height: 42px;
    position: absolute;
    right: 0;
    top: 0;
    padding-right:68px;
}
.main_header_nav_right li{
    margin-left:80px;
}
.main_header_rotation_chart{
    font-size:32px;
    color: #FFFFFF;
}

.main_header_more:hover{
    color:#6699CC;
    font-weight:bold;
}
.main_header_more1:hover{
    color:#fff;
    font-weight:bold;
}
.main_header_more{
    display:inline-block;
    width:128px;
    height:42px;
    line-height:42px;
    background:rgba(255,255,255,1);
    border-radius:21px;
    font-size:16px;
    color: #6699CC;
    text-align: center;
    cursor:pointer;
   
}
.main_header_more1{
    width: 128px;
    height: 42px;
    line-height: 42px;
    background: #6699CC;
    border-radius: 21px;
    font-size: 16px;
    color: #fff;
    text-align: center;
    cursor: pointer;
    display: block;
    margin: 0 auto;

}
.main_header_rotation_chart{
    width:100%;
}
.main_header_nav .main_header_more{
    cursor:pointer;
}


/* 第一栏 */
.one_column{
    padding: 85px 0;
    /* height:803px; */
    background:rgba(250,250,250,1);
    position: relative;
    overflow: hidden;
}
.one_column .text_left{
    width: 35%;
    display: inline-block;
    float: left;
    overflow: hidden;
    margin-top: 13%;
    padding: 0 50px;
    margin-left: 5%;
}
.one_column .text_left .title{
    font-size:30px;
    color:#303030;
}
.one_column .text_left .txt{
    margin-top:32px;
    font-size:16px;
    color:#696969;
}
.one_column .text_left .txt .mor{
    margin-top:32px;
    cursor:pointer;

}
.one_column .img_right{
    width:55%;
    float:right;
    display:inline-block;
    
}

/* 第二栏 */

.two_column{
    /* height:803px; */
    padding: 85px 0;
    background:#fff;
    position: relative;
    overflow: hidden;

}
.two_column .left_img{
    width:55%;
    display:inline-block;
    float:left;
    /* background:#626262; */
}
.two_column .right_txt{
    width: 35%;
    display: inline-block;
    float: left;
    overflow: hidden;
    margin-top: 18%;
    padding: 0 30px;
    margin-left: 5%;
}
.right_txt .tit{
    font-size: 30px;
    color: #303030;
    font-family: MicrosoftYaHei;
}
.right_txt .txt{
    margin-top:32px;
    font-size:16px;
    color:#696969;
}
/* 第三栏 */

.three_column{
    position: relative;
    overflow: hidden;
    background: rgba(250,250,250,1);
    overflow: hidden;
    padding: 147px 0;

}
.three_column .left_img{
    width:50%;
    display:inline-block;
    float:left;
    background:#626262;
}
.three_column .right_txt{
    width: 40%;
    display: inline-block;
    float: left;
    overflow: hidden;
    margin-top: 13%;
    padding: 0 30px;
    margin-left: 5%;
}
.three_column .tit{
    font-size: 30px;
    color: #303030;
}
.right_txt .txt{
    line-height: 25px;
    margin-top:32px;
    font-size:16px;
    color:#696969;
}

/* 第四栏 */
.fourth_column {
    background: #fff;
    overflow: hidden;
}
.fourth_column .tit{
    color:#303030;
    font-size:30x;
    padding-top:153px;
    margin-bottom:153px;
    text-align: center;
}
/* 文字描述 */
.year{
    color:#6699CC;
}
.describe{
    color:#696969;
}
 /* 发展历程 */
 .small_point_1 {
    position: absolute;
    top: 60px;
    left: 95.5px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_2 {
    position: absolute;
    top: -60px;
    left: 277.5px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_3 {
    position: absolute;
    top: 60px;
    left: 453.5px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_4 {
    position: absolute;
    top: -60px;
    left: 630px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_5 {
    position: absolute;
    top: 60px;
    left: 807px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_6 {
    position: absolute;
    top: -60px;
    left: 984px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

.small_point_7 {
    position: absolute;
    top: 60px;
    left: 1161px;
    width: 6px;
    height: 6px;
    background: rgba(229, 229, 229, 1);
    border-radius: 50%;
}

/* 文字描述 */
.text_1 {
    position: absolute;
    top: 75px;
    left: 12px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    /* height: 200px; */
    line-height: 21px;
}

.text_2 {
    position: absolute;
    top: -135px;
    left: 202px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;
}

.text_3 {
    position: absolute;
    top: 75px;
    left: 371px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;
}
.text_4 {
    position: absolute;
    top: -135px;
    left: 550px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;


}

.text_5 {
    position: absolute;
    top: 75px;
    left: 726px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;

}

.text_6 {
    position: absolute;
    top: -135px;
    left: 903px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;

}

.text_7 {
    position: absolute;
    top: 75px;
    left: 1079px;
    width: 168px;
    text-align: center;
    font-size: 14px;
    line-height: 21px;

}

/* 指针 */
.Pointer_1 {
    position: absolute;
    left: 98px;
    top: 0px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_2 {
    position: absolute;
    left: 280px;
    top: -60px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_3 {
    position: absolute;
    left: 456px;
    top: 0px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_4 {
    position: absolute;
    left: 633px;
    top: -60px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_5 {
    position: absolute;
    left: 809px;
    top: 0px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_6 {
    position: absolute;
    left: 987px;
    top: -60px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}

.Pointer_7 {
    position: absolute;
    left: 1163px;
    top: 0px;
    width: 1px;
    height: 60px;
    background: #E5E5E5;
}
/* 大圆点 */
.big_point_1 {
    position: absolute;
    left: 85px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_2 {
    position: absolute;
    left: 267px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_3 {
    position: absolute;
    left: 443px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_4 {
    position: absolute;
    left: 619px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_5 {
    position: absolute;
    left: 796px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_6 {
    position: absolute;
    left: 973px;
    top: -12px;
    width: 28px;
    height: 28px;
    background: rgba(102, 153, 204, 1);
    border-radius: 50%;
}

.big_point_7 {
    position: absolute;
    left: 1149px;
    top: -12px;
    width: 28px;
    height: 28px;
    border: 3px solid rgba(102,153,204,1);
    background: rgba(255,255,255,1);
    border-radius: 50%;
}