.key_baner {
    width: 100%;
}
.key_banner_bg {
    width: 100%;
    height: 445px;
    background: url("../images/keywordexpandsion/banner.png") no-repeat;
    background-size: 100% 100%;
    position: relative;
}
.key_banner_hint {
    font-size: 36px;

    font-weight: bold;
    color: #ffffff;
    line-height: 48px;
    position: absolute;
    left: 12%;
    top: 38%;
}
.key_banner_font {
    font-size: 16px;

    font-weight: bold;
    color: #ffffff;
    line-height: 30px;
    position: absolute;
    left: 12%;
    top: 50%;
    width: 50%;
}
.key_introduce {
    width: 100%;

    text-align: center;
    background-color: #ffff;
}
.key_introduce_hint {
    padding-top: 50px;
    padding-bottom: 20px;
    font-size: 30px;

    font-weight: bold;
    color: #333333;
}
.key_introduce_font {
    font-size: 14px;

    font-weight: 400;
    color: #333333;
}
.key_introduce_box_img {
    padding-top: 66px;
    padding-bottom: 60px;
}
.key_introduce_img {
    display: inline-block;
    margin: 0 auto;
    width: 62%;
    height: auto;
    /* width: 1029px;
    height: 445px; */
}
.key_scene {
    width: 100%;
    text-align: center;
    background-color: #f7f7f7;
    padding-bottom: 83px;
}
.key_scene_hint {
    padding-top: 70px;
    padding-bottom: 60px;
    font-size: 30px;

    font-weight: bold;
    color: #333333;
}
.key_scene_main {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.key_scene_main_item {
    background-color: #fff;
    width: 612px;
    /* min-height: 474px; */
    position: relative;
}
.key_scene_main_item img {
    width: 100%;
    height: auto;
}
.key_scene_main_item_hint {
    font-size: 18px;

    text-align: left;
    font-weight: bold;
    color: #333333;
    margin-top: 35px;
    margin-left: 55px;
    margin-bottom: 12px;
}
.key_scene_main_item_font {
    font-size: 14px;
    text-align: left;

    font-weight: 400;
    color: #8a8a8a;
    margin-left: 55px;
    margin-right: 55px;
    padding-bottom: 40px;
}
.key_scene_main_item_mg {
    margin-left: 37px;
}
.key_scene_hover {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 4px;
    display: flex;
    justify-content: center;
}
.key_scene_left {
    width: 0%;
    height: 100%;
    transition: all 0.5s;
    background-color: #ff6827;
}
.key_scene_right {
    width: 0%;
    height: 100%;
    transition: 0.5s;
    background-color: #ff6827;
}
.key_scene_main_item1:hover .key_scene_h1 .key_scene_left {
    width: 50%;
}
.key_scene_main_item1:hover .key_scene_h1 .key_scene_right {
    width: 50%;
}
.key_scene_main_item2:hover .key_scene_h2 .key_scene_left {
    width: 50%;
}
.key_scene_main_item2:hover .key_scene_h2 .key_scene_right {
    width: 50%;
}
.key_feature {
    width: 100%;
    text-align: center;
    background-color: #fff;
}
.key_feature_hint {
    padding-top: 67px;
    padding-bottom: 86px;
    font-size: 30px;

    font-weight: bold;
    color: #333333;
}
.key_feature_main {
    width: 100%;
    padding-bottom: 84px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.key_feature_item {
    box-sizing: border-box;
    width: 394px;
    height: 282px;
    border: 2px solid #f7f7f7;
    background-color: #f7f7f7;
}
.key_feature_mg {
    margin-left: 40px;
}
.key_feature_item_img {
    margin-top: -38px;
    margin-left: 44px;
    width: 158px;
    height: 158px;
    background-color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.06);
}
.key_feature_item_img_1 {
    background: url("../images/keywordexpandsion/ts_1_2.png") no-repeat;
    background-size: 100% 100%;
}
.key_feature_item_img_2 {
    background: url("../images/keywordexpandsion/ts_2_2.png") no-repeat;
    background-size: 100% 100%;
}
.key_feature_item_img_3 {
    background: url("../images/keywordexpandsion/ts_3_2.png") no-repeat;
    background-size: 100% 100%;
}
.key_feature_item_hint {
    font-size: 18px;
    text-align: left;

    font-weight: bold;
    color: #333333;
    margin-top: 30px;
    margin-left: 40px;
    margin-bottom: 12px;
}
.key_feature_item_font {
    margin-left: 40px;
    margin-right: 40px;
    text-align: left;
    font-size: 14px;

    font-weight: 400;
    color: #8a8a8a;
    line-height: 22px;
}
.key_feature_item:hover {
    border: 2px solid #ff6827;
    background-color: #ffff;
    transition: all 0.2s;
}
.key_feature_item:hover .key_feature_item_img {
    background-color: #ff6827;
    transition: all 0.3s;
}
.key_feature_item_1:hover .key_feature_item_img_1 {
    background: url("../images/keywordexpandsion/ts_1_1.png") no-repeat;
    background-size: 100% 100%;
    transition: all 0.3s;
}
.key_feature_item_2:hover .key_feature_item_img_2 {
    background: url("../images/keywordexpandsion/ts_2_1.png") no-repeat;
    background-size: 100% 100%;
    transition: all 0.3s;
}
.key_feature_item_3:hover .key_feature_item_img_3 {
    background: url("../images/keywordexpandsion/ts_3_1.png") no-repeat;
    background-size: 100% 100%;
    transition: all 0.3s;
}
.ww_11 {
    width: 94px;
    height: 85px;
}
.ww_22 {
    width: 104px;
    height: 101px;
}
.ww_33 {
    width: 74px;
    height: 106px;
}
@media screen and (max-width: 1277px) {
    .key_scene_main_item_mg {
        margin-left: 10px;
    }
    .key_feature_mg {
        margin-left: 10px;
    }
}
@media screen and (max-width: 768px) {
    .key_scene_main_item img {
        width: 100%;
    }
    .key_introduce_img {
        width: 96%;
        height: auto;
    }
    .key_scene_main_item_mg {
        margin-left: 0;
    }
    .key_feature_mg {
        margin-left: 0;
        margin-top: 30px;
    }
    .key_feature_item {
        width: 90%;
        height: 100%;
        background-color: #f7f7f7;
    }
    .key_feature_item_font {
        padding-bottom: 20px;
    }
}