#header {
    width: 100%;
    height: 420px;
    background: linear-gradient(180deg, #367BF0, #41B9FF);
    background-size: auto 100%;
    position: relative;
    padding-top: 170px;
    box-sizing: border-box;
}
#header .header_title_wrap{
    width: 1080px;
    margin-right: auto;
    margin-left: auto;
}
#header .header_title_wrap .header_title {
    font-size: 64px;
    color: #FFFFFF;
    letter-spacing: 0;
    text-align: center;
    margin-bottom: 20px;
}
#header .header_title_wrap .header_des{
    font-size: 20px;
    color: #FFFFFF;
    line-height: 30px;
}
#middle .use_guidelines{
    width: 1080px;
    margin: 82px auto 60px auto;
}
#middle .use_guidelines .use_guidelines_title{
    font-size: 36px;
    font-weight: 500;
    color: #1A2736;
    line-height: 42px;
    margin-bottom: 20px;
}
#middle .use_guidelines .use_guidelines_des{
    width: 800px;
    font-size: 16px;
    font-weight: 400;
    color: #1A2736;
    line-height: 28px;
}
#middle .identification{
    width: 1080px;
    margin: 0 auto 60px auto;
}
#middle .identification .identification_title{
    font-size: 36px;
    font-weight: 500;
    color: #1A2736;
    line-height: 42px;
    margin-bottom: 20px;
}
#middle .identification .identification_box{
    width: 530px;
    height: 240px;
    background: #FFFFFF;
    border-radius: 4px;
    border: 1px solid #C9D1D8;
    transition: all .3s ease-in-out;
    position: relative;
}
.identification .identification_box .identification_link{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
}
#middle .identification .identification_box:hover{
    cursor: pointer;
    box-shadow: 0px 6px 30px 0px rgba(201, 209, 216, 0.4);
}
.identification .identification_box_top{
    width: 528px;
    height: 180px;
    background: #F1F6FA;
    border-radius: 4px 4px 0px 0px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}
.identification .identification_box_top img{
    height: 180px;
}
.identification_box .identification_box_bottom{
    font-size: 16px;
    font-weight: 500;
    color: #1A2736;
    line-height: 20px;
    text-align: center;
    margin-top: 20px;
}
.product_identification_box{
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
#middle .media_resources{
    width: 1080px;
    margin: 0 auto;
    padding-bottom: 120px;
}
#middle .media_resources .media_resources_title{
    font-size: 36px;
    font-weight: 500;
    color: #1A2736;
    line-height: 42px;
    margin-bottom: 20px;
}
.media_resources .media_resources_box .media_resources_item{
    width: 348px;
    height: 240px;
    background: #FFFFFF;
    border-radius: 4px;
    border: 1px solid #C9D1D8;
    transition: all .3s ease-in-out;
}
.media_resources .media_resources_box .media_resources_item:hover{
    cursor: pointer;
    box-shadow: 0px 6px 30px 0px rgba(201, 209, 216, 0.4);
}
.media_resources_item_top img{
    border-top-right-radius: 3px;
    border-top-left-radius: 3px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}
.media_resources_item_bottom{
    font-size: 16px;
    font-weight: 500;
    color: #1A2736;
    line-height: 20px;
    text-align: center;
    margin-top: 20px;
}
.media_resources .media_resources_box{
    display: flex;
    justify-content: space-between;
    flex-direction: row;
}
.media_resources_item{
    position: relative;
}
.media_resources_item .media_resources_link{
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
}
.identification .identification_box_top .brand_logo{
    height: 113px;
    display: none;
}
.identification .identification_box_top .brand_logo.active{
    display: block;
}
@media screen and (max-width: 1080px){
    #header .header_title_wrap{
        width: 80%;
    }
    #middle .use_guidelines{
        width: 90%;
    }
    #middle .use_guidelines .use_guidelines_des{
        width: 100%;
    }
    #middle .identification{
        width: 90%;
    }
    .product_identification_box{
        width: 100%;
    }
    #middle .identification .identification_box{
        width: calc(50% - 10px);
    }
    .identification .identification_box_top{
        width: 100%;
    }
    #middle .media_resources{
        width: 90%;
    }
    .media_resources .media_resources_box .media_resources_item{
        width: calc(33% - 10px);
        height: unset;
    }
    .media_resources_item_bottom{
        margin-bottom: 20px;
    }
}
@media screen and (max-width: 750px){
    .media_resources .media_resources_box .media_resources_item{
        width: 80%;
        margin-bottom: 20px;
    }
    .media_resources .media_resources_box .media_resources_item:last-child{
        margin-bottom: 0;
    }
    .media_resources .media_resources_box {
        justify-content: space-between;
        flex-direction: column;
        align-items: center;
    }
}
@media screen and (max-width: 590px){
    #middle .identification .identification_box{
        width: 100%;
    }
    .product_identification_box {
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    #middle .identification .identification_box:first-child{
        margin-bottom: 20px;
    }
}