/*导航栏开始*/
.menu-box {
    position: absolute;
    width: 1200px;
    bottom: 0;
    left: calc(50% - 600px);
    background: #F4F4F4;
    opacity: 0.7;
    height: 103px;
    box-sizing: border-box;
    z-index: 1000;
}

.menu_item {
    width: 240px;
    height: 50px;
    text-align: center;
    line-height: 50px;
}

.menu_item:not(:nth-child(5n)) {
    border-right: 1px solid #0046b4;
}

.menu_item img {
    width: 30px;
    height: 28px;
    vertical-align: text-bottom;
}

.menu_item span {
    font-size: 21px;
    color: #000000;
}

/*导航栏结束*/

/*公司介绍*/
.introduce_box {
    background: #ffffff;
}

.introduce_content {
    position: absolute;
    top: 106px;
    left: 0;
    width: 100%;
}

.introduce_text {
    font-size: 17px;
    color: #181535;
    line-height: 25px;
    width: 534px;
    margin-top: 30px;
}

.line {
    height: 1px;
    background: #0046B4;
}

.com_number {
    font-size: 35px;
    font-weight: bold;
    color: #0046B4;
}

.com_unit {
    font-size: 18px;
    font-weight: bold;
    color: #0046B4;
}

.com_desc {
    font-weight: 400;
    font-size: 17px;
    color: #333333;
}

/*发展历程*/
.course_title {
    width: 100%;
    height: 60px;
    background: #0046B4;
    line-height: 60px;
    padding: 0 17px;

}

.time-item {
    padding-bottom: 45px;
    position: relative;
}

.time-left {
    padding-left: 150px;
    box-sizing: border-box;
}

.time_line {
    position: absolute;
    left: 155px;
    border-left: 2px solid #AAAAAA;
    height: 100%;
}

.year {
    font-size: 35px;
    color: #0046B4;
    width: 80px;
    margin-right: 80px;
}

.course_text {
    font-size: 17px;
    color: #000000;
    line-height: 22px;
    width: 850px;

}

.time_cicle {
    position: absolute;
    width: 12px;
    height: 12px;
    left: 150px;
    background: #0046B4;
    border-radius: 50%;

}

/*资质认证*/
.qualif {
    background: #EEEEEE;
    height: 380px;
    padding-left: 85px;
    padding-right: 62px;
    box-sizing: border-box;
}

.qualif_left {
    width: 700px;
    padding-top: 118px;
    padding-right: 90px;
}

.qualif_title {
    font-weight: bold;
    font-size: 25px;
    color: #1B5EAC;
}

.qualif_text {
    font-size: 14px;
    color: #000000;
    line-height: 21px;
}

.qualif_right {
    padding-top: 21px;
}

.qualif_right_itme {
    width: 273px;
    height: 102px;
}

.qualif_2 {
    background: #EEEEEE;
    width: 535px;
    height: 624px;
    padding: 54px 71px 0 85px;
    box-sizing: border-box;
}

.qualif_3, .qualif_4 {
    background: #EEEEEE;
    width: 639px;
    height: 299px;
    padding-top: 28px;
    box-sizing: border-box;
}

/*品牌文化*/
.brand_box {
    background: #000000;
}

.brand-img img {
    width: 357px;
    height: 174px;
    margin-top: 52px;
}

/*企业环境*/
.env_box {
    background: #000000;
    padding-bottom: 124px;
}

.env_title {
    text-align: center;
    padding-top: 103px;
}

.env_title_zh {
    font-size: 60px;
    font-weight: bold;
    color: #ffffff;
}

.env_title_en {
    color: #D2D2D2;
    font-size: 20px;
}

.env_item {
    width: 573px;
    margin-top: 80px;
}

.env_item img {
    width: 100%;
    height: 356px;
}

.env_item div {
    text-align: center;
    font-size: 22px;
    color: #ffffff;
    margin-top: 32px;
}

/*联系我们*/
.contact_box {
    background: #ffffff;
    height: 857px;
}

.contact_wx {
    width: 167px;
    text-align: center;
}

.contact_wx img {
    width: 100%;
    height: 167px;
}

.contact_wx_text {
    font-size: 14px;
    color: #000000;
}

.company_name {
    font-size: 28px;
    color: #000000;
}

.company_info {
    font-size: 17px;
    color: #000000;
}

.contact_right {
    width: 600px;
    height: 531px;
    background: #676767;
}

.brand_item {
    width: 275px;
    height: 144px;
    border-radius: 15px;
    border: 1px solid #72BEFF;
    padding: 53px 0px 0px 22px;
    box-sizing: border-box;
    color: #ffffff;
}

.lf_1 {
    position: absolute;
    color: #ffffff;
    top: 196px;
    left: 18px;
    text-align: right;
}

.lf_2 {
    position: absolute;
    color: #ffffff;
    top: 73px;
    left: 235px;
    text-align: right;
}

.lf_3 {
    position: absolute;
    color: #ffffff;
    top: 73px;
    right: 193px;
    text-align: left;
}

.lf_4 {
    position: absolute;
    color: #ffffff;
    top: 196px;
    right: 18px;
    text-align: left;
}

.brand_title {
    background: linear-gradient(#4FACFE, #00F2FE); /* 标准的语法 */
    -webkit-background-clip: text; /* 将渐变应用到文字上 */
    -webkit-text-fill-color: transparent; /* 设置文字颜色为透明，显示渐变效果 */
    font-weight: bold;
    font-size: 40px;
}

.b_item {
    width: 357px;
    height: 174px;
    padding: 44px 0 0 40px;
    box-sizing: border-box;
    border-radius: 15px;
    text-align: left;
    margin-top: 50px;

}