*{
    padding:0;
    margin:0;
    list-style: none;
    
}

.bod{
    width:975px;
}
.head{
    width:975px;
    overflow: hidden;  
}
#aa{
    height:10px;
    width:975px;
}
.head .title{
    text-align: center;
    font-size: 20px;
    font-weight: 550;
    
}
.model{
    font-size: 16px;
    display: flex;
    margin: 50px auto;
    color: #666;
    line-height: 30px;
}
.model .introduction{
    width:180px;
    height:50px;
    background:#6f8ff2;
    color:white;
    text-align: center;
    line-height:50px;
    margin-left:30px;
    margin-top:10px
}
.model .word{
    font-size: 16px;
    width:70%;
    margin-left:40px 
}
.target{
    width:100%;
    background:#fbfcfe;
    height:495px;
    overflow: hidden;
}
.bottom{
    display: flex;
    margin-left: 20px;
}
.word_1{
   height:60px;
    margin: 40px auto;
    width:100px; 
    line-height: 38px;
    font-size: 22px;
    text-align: center;
}
.line{
    width:30px;
    height:7px;
    background:#6f8ff2;
    margin:0 auto;
}
.word_2{
    box-sizing: border-box;
    padding:60px 30px ;
    width:280px; 
    height:290px;
    line-height: 30px;
    font-size: 14px;
    color: white;
    background: #9fddf6;
}
.introduce{
    width:100%;
}
.word_3{
    width:850px;
    margin: 0 auto;
}
.jiazhi{
    width:850px;
    margin: 0 auto;
    line-height: 30px;
    color: #666;
    line-height: 30px;
    font-size: 16px;
}
.zhuti{
    width:92%;
    margin-left:40px;
    height:450px;
    background: #f8f9fb;
    overflow: hidden;
}
.word_4{
    text-align: center;
    font-size: 14px;
}
.icon{
    margin: 40px auto;
}
.icon_1{
    margin-left:10px;
}
.last{
    width: 100%;
}
.img_k{
    width:975px;
}
.img_w{
    width:945px;
}
.word_5{
    box-sizing: border-box;
    padding:35px 25px ;
    width:280px; 
    height:290px;
    line-height: 23px;
    font-size: 14px;
    color: white;
    background: #9fddf6;
}
.word_6{
    box-sizing: border-box;
    padding:26px 18px ;
    width:280px; 
    height:290px;
    line-height: 23px;
    font-size: 14px;
    color: white;
    background: #9fddf6;
}
.font_width{
    letter-spacing:0.8px
}
.height_1{
    height:60px;
}
.height_2{
    height:450px;
}
.height_3{
    height:300px;
}
.height_4{
    height:240px;
}
.height_5{
    height:420px;
}
.height_6{
    height:540px;
}
.height_7{
    height:360px;
}
.height_8{
    height:150px;
}
.height_9{
    height:180px;
}
.height_10{
    height:270px;
}