* {
    padding: 0
}

.w {
    width: 1400px;
    margin: 0 auto
}

p {
    line-height: 1
}

.banner {
    overflow: hidden
}

.banner .banner_w {
    height: 720px;
    background-image: url(../img/banner5.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    position: relative;
    overflow: hidden
}

.banner .banner_w .banner_sousuo {
    text-align: center;
    margin-top: 256px
}

.banner .banner_w .banner_sousuo h4 {
    font-family: "biaoti";
    font-size: 36px;
    color: #149bb6;
    text-align: center;
    font-weight: 600
}

.banner .banner_w .banner_sousuo .sous {
    position: relative;
    width: 662px;
    height: 48px;
    margin-top: 68px;
    margin: 68px auto
}

.banner .banner_w .banner_sousuo .sous button {
    width: 48px;
    height: 48px;
    border-radius: 48px;
    overflow: hidden;
    border: none;
    cursor: pointer;
    position: absolute;
    right: 0;
    background-color: #149bb6
}

.banner .banner_w .banner_sousuo .sous input {
    width: 100%;
    height: 48px;
    border-radius: 48px;
    overflow: hidden;
    box-sizing: border-box;
    padding: 0 29px;
    color: #333;
    font-family: "biaotixi";
    border: 1px solid #149bb6
}

.product {
    margin-top: 60px
}

.product .product_box {
    display: flex;
    justify-content: space-between;
    gap: 25px;
}

.product .product_box .product_left {
    padding: 0 20px 17px;
    border: 1px solid #e5e5e5;
    border-radius: 10px;
    overflow: hidden;
    width: 268px;
    box-sizing: border-box;
}

.product .product_box .product_left h4 {
    padding: 17px 0;
    border-bottom: 1px solid #e5e5e5;
    font-size: 17px;
    color: #333;
    font-family: "biaotixi"
}

.product .product_box .product_left .product_href a {
    display: flex;
    justify-content: space-between
}

.product .product_box .product_left .product_href a span {
    font-family: "biaotixi"
}

.product .product_box .product_left .product_href a {
    margin-top: 25px
}

.product .product_box .product_right {
    max-width: 1100px;
    width: 100%;
    box-sizing: border-box
}

.product .product_box .product_right .product_list_box {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    justify-content: center;
}

.product .product_box .product_right .product_list_box .list_box {
    max-width: 256px;
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #f0f0f0;
    box-shadow: 0 1px 6px 0 #dfdfdf
}

.product .product_box .product_right .product_list_box .top_img {
    width: 100%;
    height: 290px;
    background-color: #fefefe;
    position: relative;
    overflow: hidden
}

.product .product_box .product_right .product_list_box .top_img .chanplogo {
    position: absolute;
    opacity: .2;
    width: 100%
}

.product .product_box .product_right .product_list_box .top_img img {
    width: 100%
}

.product .product_box .product_right .product_list_box .bot_box {
    padding: 10px;
    background-color: #fff;
    font-family: 'biaotixi'
}

.product .product_box .product_right .product_list_box .bot_box .bianm {
    display: flex;
    margin-top: 10px
}

.product .product_box .product_right .product_list_box .bot_box .bianm i,
.product .product_box .product_right .product_list_box .bot_box .bianm span {
    font-size: 14px;
    color: #000;
    line-height: 1
}

.product .product_box .product_right .product_list_box .bot_box .bianm i {
    font-size: 16px;
    padding-top: 0;
    margin-right: 5px
}

.product .product_box .product_right .product_list_box .bot_box h1 {
    font-family: 'biaoti';
    font-size: 16px;
    height: 40px;
    color: #38aac1;
    margin-top: 15px
}

.product .product_box .product_right .product_list_box .bot_box a {
    padding: 8px 30px;
    border-radius: 10px;
    overflow: hidden;
    background-color: #149bb6;
    color: #fff;
    border: 0;
    font-family: 'biaoti';
    font-weight: 100;
    margin: 10px auto 0;
    text-align: center;
    cursor: pointer;
    display: inline-block;
    transition: all .5s ease
}

.product .product_box .product_right .product_list_box .bot_box a:hover {
    background-color: #128ba3
}

.product .product_box .product_right .qiehuan {
    margin: 20px auto;
    text-align: center
}

.product .product_box .product_right .qiehuan a {
    margin: 0 3px;
    display: inline-block;
    width: 30px;
    height: 30px;
    background-color: #e5e5e5;
    text-align: center;
    line-height: 28px;
    color: #333;
    font-family: "biaotixi";
    border-radius: 30px;
    overflow: hidden;
    transition: all .3s ease;
    color: #464646
}

.product .product_box .product_right .qiehuan a:hover {
    color: #fff;
    background-color: #149bb6
}
@media (max-width:575px) {
    .product .product_box{
        display: block;
    }
    .product .product_box .product_left{
        width: 100%;
        margin-bottom: 20px;
    }
}
@media (max-width:800px) {
    .banner .banner_w .banner_sousuo .sous {
        width: 95%
    }
    .product .product_box .product_right .product_list_box .bot_box h1{
        font-size: 14px;
    }
    .product_left {
    }

    .product .product_box .product_right .product_right_box {
        display: flex;
        flex-wrap: wrap
    }

    .product .product_box .product_right .product_list_box .top_img{
        height: 184px;
    }
    .product .product_box .product_right .product_list_box .list_box{
        max-width: 180px;
    }
}

@media (max-width:870px) {
    .banner .banner_w .banner_sousuo h4 {
        font-size: 24px;
        width: 95%;
        margin: 0 auto
    }
}

@media (max-width:1060px) {
    .product .product_box .product_right .product_list_box .list_box {
        flex: 1 1 calc(50% - 20px);
        /* min-width: 200px; */
        box-sizing: border-box
    }
}

@media (max-width:1400px) {
    .w {
        width: 95%;
        margin: 0 auto
    }

    .banner .banner_w {
        width: 100%
    }

    .banner {
        margin-top: 100px !important
    }
}