* {
    margin: 0;
    padding: 0;
}

html {
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    height: auto;
    overflow: auto;
}

/* 头部导航 */
.header_bg{
    width: 100%;
    height: 29vw;
}
.header_bg>img{
    width: 100%;
    height: 100%;
}
nav {
    z-index: 99;
    position: fixed;
    top: 0;
    width: 100%;
    height: 8vw;
    display: flex;
    align-items: center;
}

.bg {
    background-color: #000;
}

.logo {
    width: 15vw;
    height: 5vw;
    margin-left: 18vw;
}

.logo img {
    width: 100%;
    height: 100%;
}

.text {
    width: 48vw;
    height: 8vw;
    display: flex;
    margin-left: 10vw;
}

.text>div {
    width: 8vw;
    height: 100%;
    text-align: center;
    line-height: 8vw;
    font-size: 1vw;
    color: #fff;
    white-space: nowrap;
}
.text>div>a{
    color: #fff;
    text-decoration: none !important;
}

.text>div:hover {
    cursor: pointer;
    background-color: rgba(35, 31, 31, 0.2);
}

.about {
    width: 8vw !important;
    height: 18vw !important;
    background-color: #000;
    display: none;
}

.ab:hover>.about {
    display: block;
}

.about a {
    display: block;
    text-decoration: none !important;
    width: 100%;
    height: 3.6vw;
    font-size: 1vw;
    color: #fff !important;
    line-height: 3.6vw;
}

.about a:hover {
    background-color: rgb(202, 19, 19);
}

.industry {
    width: 8vw;
    height: 10.8vw !important;
    background-color: #000;
    display: none;
}

.in:hover>.industry {
    display: block;
}

.industry a {
    display: block;
    text-decoration: none !important;
    height: 3.6vw;
    width: 100%;
    font-size: 1vw;
    color: #fff !important;
    line-height: 3.6vw;
}

.industry a:hover {
    background-color: rgb(202, 19, 19);
}


/* 内容 */
.contact_us{
    width: 80vw;
    height: auto;
    margin: 0 auto;
    margin-top: 4vw;
}
.contact_us_title{
    font-size: 2vw;
    display: flex;
    justify-content: space-between;
}
.contact_us_title>.small{
    font-size: 1vw;
    margin-top: .8vw;
}
.contact_us_line{
    width: 4vw;
    height: .2vw;
    background-color: rgb(183, 50, 50);
    margin-top: .3vw;
}
.contact_us_english{
    margin-top: .3vw;
    color: rgb(144, 135, 135);
}
.contact_us>.contact_us_details{
    width: 100%;
    height: auto;
    margin-top: 9vw;
}
.contact_us>.contact_us_details>.contact_us_details_first{
    width: 100%;
    height: auto;
}
.contact_us>.contact_us_details>.contact_us_details_first>div{
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    padding: 2vw;
    border-bottom: 1px solid #ebeef5;
}
.contact_us>.contact_us_details>.contact_us_details_first>div:hover{
    background-color: rgb(226, 207, 207);
    cursor: pointer;
}
.contact_us>.contact_us_details>.contact_us_details_first>div:hover a{
    background-color: rgb(237, 59, 59);
}
.contact_us>.contact_us_details>.contact_us_details_first>.contact_us_details_first_top>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}
.contact_us_details_first_top_text{
    width: auto;
    height: auto;
    margin-left: 3vw;
}
.contact_us_details_first_top_text>h3{
    font-size: 2vw;
}
.contact_us_details_first_top_text>span{
    display: block;
    font-size: 1vw;
    font-weight: 600;
    margin-top: 1vw;
}
.contact_us_details_first_top_text>p{
    margin-top: 2vw;
    font-size: 1vw;
    white-space: nowrap
}

.contact_us_details_first_top_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_first_top_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_first_center_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_first_center_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_first_bottom_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_first_bottom_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_first_center>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}
.contact_us_details_first_bottom>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}

/* 第二个 */
.contact_us>.contact_us_details>.contact_us_details_second{
    width: 100%;
    height: auto;
    display: none;
}
.contact_us>.contact_us_details>.contact_us_details_second>div{
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    padding: 2vw;
    border-bottom: 1px solid #ebeef5;
}
.contact_us>.contact_us_details>.contact_us_details_second>div:hover{
    background-color: rgb(226, 207, 207);
    cursor: pointer;
}
.contact_us>.contact_us_details>.contact_us_details_second>div:hover a{
    background-color: rgb(237, 59, 59);
}
.contact_us>.contact_us_details>.contact_us_details_second>.contact_us_details_second_top>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}
.contact_us_details_second_top_text{
    width: auto;
    height: auto;
    margin-left: 3vw;
}
.contact_us_details_second_top_text>h3{
    font-size: 2vw;
}
.contact_us_details_second_top_text>span{
    display: block;
    font-size: 1vw;
    font-weight: 600;
    margin-top: 1vw;
}
.contact_us_details_second_top_text>p{
    margin-top: 2vw;
    font-size: 1vw;
    white-space: nowrap
}

.contact_us_details_second_top_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_second_top_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_second_center_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_second_center_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_second_bottom_photo{
    width: 24vw;
    height: 16vw;
}
.contact_us_details_second_bottom_photo>img{
    width: 100%;
    height: 100%;
}
.contact_us_details_second_center>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}
.contact_us_details_second_bottom>a{
    position: absolute;
    right: 2vw;
    bottom: 2vw;
    display: block;
    width: 7vw;
    height: 2.6vw;
    text-align: center;
    line-height: 2.6vw;
    text-decoration: none;
    color: #fff;
    background-color: #d8d8d8;
    border-radius: 0.8vw;
}


/* 翻页 */
.turn_pages{
    width: 12vw;
    height: 2vw;
    margin: 0 auto;
    margin-top: 3vw;
    display: flex;
    justify-content: space-between;
}
.turn_pages>div{
    width: 2vw;
    height: 2vw;
    text-align: center;
    line-height: 1.8vw;
    border: 1px solid rgb(146, 144, 144);
    box-sizing: border-box;
    cursor: pointer;
}
#turn_pages_one{
    background-color: rgb(221, 62, 62);
    color: #fff;
}


/* 底部 */
.di_bu{
    width: 100%;
    height: auto;
    background-color: #2d3032;
    color: #fff;
    margin-top: 4vw;
}
.di_bu_top{
    width: 80vw;
    height: 17vw;
    margin: 0 auto;
    display: flex;
}
.di_bu_top>div{
    font-size: 1vw;
    padding-top: 2vw;
}
.di_bu_top_left{
    flex: 0.3;
}
.di_bu_top_center{
    flex: 0.3;
}
.di_bu_top_right{
    flex: 0.4;
}
.di_bu_top>div>h3{
    font-size: 1.6vw;
    padding-bottom: 1vw;
}
.di_bu_top>div>a{
    display: block;
    text-decoration: none;
    color: #fff;
    margin-top: 0.5vw;
}
.di_bu_top>div>ul>li{
    list-style: none;
    margin-top: 0.5vw;
}
.di_bu_bottom{
    width: 100%;
    height: auto;
    background-color: #000;
    text-align: center;
    color: #fff;
    padding-top: 1vw;
    padding-bottom: 1vw;
    font-size: 1vw;
}