.renzheng {
    background-color: #f5f5f5;
}


.big_pic_con {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.big_pic {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 50px 0;
}

.big_pic_con_pic {
    height: 255px;
}

.big_pic_con_pic img {
    max-width: 100%;
}

.big_pic_con_info {
    background-color: #fff;
    width: 100%;
    height: 280px;
    padding-bottom: 15px;
}

.big_pic_con_info h1 {
    font-size: 72px;
    color: #333;
    padding: 40px 0;
}

.big_pic_con_info h2,
.big_pic_con_info h3 {
    font-size: 24px;
    color: #333;
    line-height: 1;

}


.big_pic_con_info p {
    line-height: 1.5;
    font-size: 16px;
    color: #696969;
    line-height: 1;
    padding: 15px 0 0 0;
}

@media screen and (max-width:768px) {
    .big_pic .za82a0col-md4:nth-of-type(3) {
        width: 100%;
        height: auto;
    }
}

@media screen and (max-width:650px) {
    .big_pic .za82a0col-md4 {
        width: 100%;
        height: auto;
    }

    .big_pic_con_pic {
        height: 220px;
    }
}

/* 质量管理 */
.quality {

    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 50px 0;

}

.quality_title {
    text-align: center;
}

.quality_title h3 {
    font-size: 36px;
    color: #000;
    font-weight: 555;
    padding-bottom: 15px;
}

.quality_title p {
    font-size: 16px;
    color: #595959;
    line-height: 2;
}

.quality_title span {
    font-size: 16px;
    color: #595959;
}

.quality_con {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
    background-color: #fff;

}

.quality_pic {
    width: 100%;
    overflow: hidden;
}

.quality_pic img {
    max-width: 90%;
    transition: all .4s ease;
}

.quality_pic:hover img {
    transform: scale(1.1);
}

.quality_info {

    width: 100%;
    padding-bottom: 15px;
}




.quality_info h3 {
    font-size: 24px;
    color: #333;
    line-height: 1.5;

}

.quality_con:hover h3 {
    color: #65b5ff;
}

@media screen and (max-width:768px) {
    .quality .quality_md4_1 {
        width: 100%;

    }

    .quality_pic {
        height: 454px;
    }

    .quality .quality_md4_1 .quality_pic {
        max-width: 100%;
        height: 300px;
    }
}

@media screen and (max-width:650px) {
    .quality .za82a0col-md4 {
        width: 100%;
        height: auto;
    }

    .quality .quality_md4_1 .quality_pic {
        width: 100%;
        height: auto;
    }

    .quality_pic {
        height: auto;
    }
}

/* 环境管理 */
.environment {

    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 50px 0;

}

.environment_title {
    text-align: center;
}

.environment_title h3 {
    font-size: 36px;
    color: #000;
    font-weight: 555;
    padding-bottom: 15px;
}

.environment_title p {
    font-size: 16px;
    color: #595959;
    line-height: 2;
}



.environment_con {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
    background-color: #fff;
    padding: 20px;
    box-sizing: border-box;
}

.environment_pic {
    width: 100%;
    overflow: hidden;

}

.environment_pic img {
    max-width: 100%;
    transition: all .4s ease;
}

.environment_pic:hover img {
    transform: scale(1.1);
    cursor: pointer;
}

@media screen and (max-width:650px) {
    .environment_con {

        padding: 10px;
    }
}