.pt30 {
    padding-top: 30px;
}

.produce_nav_fa {
    margin-top: 80px;
    background: #ffffff;
}

.produce_nav {
    background-color: #f2f2f2;
    height: 40px;
    line-height: 40px;
}

.info_top {
    background-color: #f7f7f7;
    border-bottom: 1px solid #2256AA;
}

.info_tip {
    color: #ffffff;
    background-color: #2256AA;
    display: inline-block;
    padding: 5px 10px;
}

.title {
    padding-top: 30px;
}

.info_main {
    padding: 20px 30px;
    color: #747474;
}

.info_p {
    width: 300px;
    font-size: 14px;
    margin-bottom: 10px;
}

.w200 {
    width: 200px;
}

.info_box {
    width: 800px;
    margin: auto;
    font-size: 16px;
    padding: 20px 0;
}

.info_box>div:first-child {
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
    font-size: 18px;
}

.info_box>div:nth-child(2),
.info_box>div:nth-child(4) {
    color: #2256AA;
    margin: 15px 0;
    font-weight: 500;
    font-weight: bold;
}

.info_box>div:nth-child(3),
.info_box>div:nth-child(5) {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.info_box>div:nth-child(3)>div,
.info_box>div:nth-child(5)>div {
    display: flex;
    padding: 5px 0;
}

.info_box>div:nth-child(3)>div>span:first-child,
.info_box>div:nth-child(5)>div>span:first-child {
    width: 80px;
    font-weight: 500;
    margin-right: 20px;
}

.info_box>div:nth-child(3)>div>span:last-child,
.info_box>div:nth-child(5)>div>span:last-child {
    flex: 1;
}

@media screen and (max-width: 750px) {

    .info_box>div:nth-child(3),
    .info_box>div:nth-child(5) {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .info_box>div:nth-child(3)>div,
    .info_box>div:nth-child(5)>div {
        padding: 3px 0;
        font-size: 14px;
    }
    
    .info_box>div:nth-child(3)>div>span:first-child,
    .info_box>div:nth-child(5)>div>span:first-child {
        width: 70px;
        margin-right: 10px;
    }
    
    .info_box>div:first-child {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .info_box>div:nth-child(2),
    .info_box>div:nth-child(4) {
        margin: 10px 0;
        font-size: 14px;
    }
    
    .info_box {
        padding: 10px 0;
        font-size: 14px;
    }
}

.info_list {
    width: 700px;
    margin: auto;
    font-size: 0;
}

.info_video {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 15px 0;
}

.info_list img {
    width: 700px;
}

.introduce {
    display: flex;
    margin-bottom: 30px;
}

.introduce_left {
    width: 420px;
    margin-right: 20px;
}

.introduce_imgBox {
    width: 420px;
    height: 420px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    /* 垂直居中 */
    justify-content: center;
    /* 水平居中 */
    /* 可选：防止图片溢出 */
    overflow: hidden;
}

.introduce_imgBox_img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.introduce_left_img {
    width: 420px;
    margin-bottom: 20px;
}

.introduce_left_list {
    width: 420px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.introduce_left_list_btn {
    width: 24px;
    height: 60px;
    font-size: 20px;
    font-weight: 600;
    color: #cccccc;
    line-height: 60px;
    text-align: center;
}

.introduce_left_list_imgs {
    width: 320px;
    height: 62px;
}

.w140 {
    width: 140px;
}

.w220 {
    width: 220px;
}

.introduce_left_list_imgs img {
    max-width: 60px;
    max-height: 60px;
}

.selected {
    border: 1px solid #2256AA;
}

.introduce_right {
    width: 460px;
}

.introduce_title {
    font-size: 16px;
    font-weight: 600;
    color: #000000;
    line-height: 30px;
    padding: 15px 0;
}

.introduce_tip {
    color: #999999;
    font-size: 12px;
    line-height: 30px;
    padding: 10px 12px;
    margin: 0px 0 20px;
    background: linear-gradient(90deg, #F0EFEF 0%, #F3F3F3 100%);
}

.introduce_tip_left {
    min-width: 50px;
    display: inline-block;
    text-align-last: justify;
    text-align: justify;
    margin-right: 5px;
}

.introduce_p {
    color: #747474;
    font-size: 14px;
    line-height: 34px;
}


@media screen and (max-width: 750px) {

    .w1200,
    .w900,
    .info_list img,
    .introduce_right,
    .introduce_left_img,
    .introduce_left_list {
        width: 100%;
    }

    .info_box {
        width: 90%;
    }
    .introduce_imgBox {
        width: 100%;
        max-height: 300px;
    }

    .info_list,
    .title {
        width: 90%;
    }

    .info_main {
        padding: 10px 40px;
    }

    .info_p {
        /*width: 150px;*/
        font-size: 10px;
        margin: 1px;
    }

    .title {
        padding-top: 6px;
    }

    .info_tip {
        font-size: 12px;
    }

    .produce_nav_fa {
        margin-top: 58px;
    }

    .produce_nav {
        height: 26px;
        padding: 0 10px;
        box-sizing: border-box;
        line-height: 26px;
    }

    .produce_nav p {
        line-height: 26px;
    }

    .introduce {
        display: block;
        margin: 20px 0;
    }

    .introduce_title {
        line-height: 24px;
        padding: 10px 0;
    }

    .introduce_p {
        font-size: 13px;
        line-height: 26px;
    }

    .introduce_tip {
        line-height: 26px;
        margin-bottom: 10px;
        pading: 5px 12px
    }

    .introduce_left {
        margin: 0;
        width: 100%;
    }

    .introduce_left_list_imgs {
        width: calc(100% - 100px);
        height: auto;
        max-height: 60px;
    }

    .introduce_left_list_imgs img {
        width: 22%;
        height: auto;
        max-height: 60px;
    }

}