body{
    background: url("../img/help_bg.jpg") top center no-repeat;
}
.help_search{
    padding: 80px 0 40px 0;
}
.help_search_d1{
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 30px;
    text-align: center;
}
.help_search_d2{
    position: relative;
    width: 600px;
    height: 48px;
    background-color: #ffffff;
    border-radius: 4px;
    border: solid 1px #e6e8f3;
    margin: 0 auto 10px auto;
}
.help_search_d2 img{
    position: absolute;
    left: 16px;
    top: 17px;
}
.help_search_d2 input{
    height: 100%;
    width: 100%;
    padding-left: 48px;
    border: none;
    background: none;
}
.help_search_d3{
    width: 600px;
    margin: 10px auto;
}
.help_search_d3 a{
    margin-left: 10px;
    color: #8593b6;
}
.help_search_d3 a:hover{
    color: #3f68f5;
}
.help_title{
    margin: 60px auto;
    font-size: 32px;
    font-weight: bold;
    text-align: center;
}
.help_section1{
    background-image: linear-gradient(0deg,
    #ffffff 0%,
    #ebeffc 100%),
    linear-gradient(90deg, #5f87f8 0%, #3860f4 100%);
    background-blend-mode: normal, normal;
    box-shadow: 2px 4px 10px 0 #ebeffc;
    border-radius: 4px;
    padding: 20px;
}
.help_section1_tit{
    height: 60px;
    background-image: linear-gradient(90deg, #5f87f8 0%, #3860f4 100%);
    border-radius: 4px;
    padding: 0 30px;
    line-height: 60px;
    font-size: 20px;
    color: #ffffff;
    margin-bottom: 24px;
}
.help_section1_tit li{
    float: left;
    width: 25%;
    line-height: 60px;
}
.help_section1_list{
    padding: 0 30px;
}
.help_section1_list li{
    float: left;
    width: 25%;
}
.help_section1_list_a{
    display: block;
    text-align: left;
    color: #374567;
    margin-bottom: 20px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.help_section1_list_a:hover{
    color: #3c64f4;
}
.help_section1_list_line{
    display: inline-block;
    width: 24px;
    height: 1px;
    background-color: #8593b6;
    margin: 20px 0;
}
.help_section1_list_more{
    display: block;
    color: #374567;
    text-align: left;
}
.help_section1_list_more:hover{
    color: #3c64f4;
}
.help_section2 li{
    float: left;
    width: calc(25% - 15px);
    margin-right: 20px;
    height: 220px;
    background-image: linear-gradient(0deg, #ffffff 0%, #ebeffc 100%),
    linear-gradient(90deg, #5f87f8 0%, #3860f4 100%);
    background-blend-mode: normal, normal;
    box-shadow: 2px 4px 10px 0 #ebeffc;
    border-radius: 4px;
    padding: 30px 20px 0 20px;
}
.help_section2 li:nth-child(4n){
    margin-right: 0;
}
.help_section2 li b{
    display: block;
    margin-bottom: 20px;
    line-height: 30px;
}
.help_section2 li p{
    line-height: 30px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}
.help_section2 li a{
    float: right;
    color: #3c64f4;
    margin-top: 10px;
}