* {
    margin: 0;
    padding: 0;
}
.w {
    width: 1200px;
    margin:  auto;
}
body {
    width: 1920px;
    background-color: #fff;
}
li {
    list-style: none;
}
a {
    text-decoration: none;
}
/* 第一部分 */
.header {
    width: 1920px;
    height: 80px;
}
.header1 {
    /* overflow: hidden; */
    position: absolute;
    z-index: 2;
    width: 1920px;
    height: 80px;
    background-color: #2850AC;
    background-image: url(../pic/headBackground.png);
}
.logo {
    float: left;
    width: 150px;
    height: 42px;
    margin-top: 19px;
    margin-left: 360px;
}
.nav {
    float: left;
    margin-left: 423px;
}
.nav ul li{
    float: left;
}
.nav ul li a {
    display: block;
    width: 106px;
    height: 80px;
    margin-right: 55px;
    line-height: 80px;
    font-size: 20px;
    text-align: center;
    color: #fff;
}
.nav ul li:nth-child(3) a{
    border-bottom: 12px solid #14B84C;
    background-color: rgba(0, 0, 0, 0.3);
}
.nav ul li a:hover {
    color: #fff;
    /* border-bottom: 12px solid #14B84C; */
    background-color: rgba(0, 0, 0, 0.3);
}    
.header2 {
    position: relative;
    top: 80px;
    width: 1920px;
    height: 400px;
    background-image: url(../pic/banner2.png);
}
.header2 img:hover {
    transform: scale(1.0);
}

/* 下一个 */
.city_service_app {
    width: 1200px;
    height: 300px;
    margin-top: 121px;
    background-image: url(../product.pic/productUrbanServices.png);
}
.city_service_app_pic{
    overflow: hidden;
    width: 1200px;
    height: 300px;
    opacity: 1;
    background: rgba(0,0,0,0.40);
}
.shadow {
    width: 300px;
    height: 50px;
    opacity: 1;
    margin-top: 125px;
    background: #648bdc;
    border-radius: 40px;
    box-shadow: 0px 4px 4px 0px rgba(0,0,0,0.30); 
}
.check-details {
    float: left;
    width: 80px;
    height: 30px;
    opacity: 1;
    margin: 10px 22px 10px 95px;
    font-size: 20px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #ffffff;
}
.biao {
    float: left;
    width: 20px;
    height: 20px;
    margin-top: 15px;
    opacity: 1;
}
.shadow img {
    width: 20px;
    height: 20px;
}
/* 下一个 */
.city_service_app_title {
    width: 500px;
    height: 39px;
    opacity: 1;
    margin-top: 23px;
    font-size: 26px;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: center;
    color: #666666;
}
/* 下一个 */
.city_service_app_text {
    width: 1199px;
    height: 48px;
    opacity: 1;
    margin-top: 23px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #666666;
    line-height: 24px;
    letter-spacing: 0px;
}
/* 下一个 */
.data-exchange-platform_pic {
    overflow: hidden;
    width: 1200px;
    height: 599px;
    margin-top: 85px;
    opacity: 1;
}
/* 下一个 */
.data-exchange-platform_title {
    width: 234px;
    height: 39px;
    opacity: 1;
    margin-top: 23px;
    font-size: 26px;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: LEFT;
    color: #666666;
}

.data-exchange-platform_text {
    width: 1088px;
    height: 96px;
    opacity: 1;
    margin-top: 23px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #666666;
    line-height: 24px;
    letter-spacing: 0px;
}

.big-data-platform-pic {
    overflow: hidden;
    width: 1200px;
    height: 673px;
    opacity: 1;
    margin-top: 85px;
}

.big-data-platform-title {
    width: 481px;
    height: 39px;
    opacity: 1;
    margin-top: 23px;
    font-size: 26px;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: LEFT;
    color: #666666;
}

.big-data-platform-text {
    width: 1080px;
    height: 72px;
    opacity: 1;
    margin-top: 23px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #666666;
    line-height: 24px;
    letter-spacing: 0px;
}

.shared-exchange-platform-pic {
    overflow: hidden;
    width: 1200px;
    height: 307px;
    margin-top: 85px;
    opacity: 1;
}

.shared-exchange-platform-title {
    width: 234px;
    height: 39px;
    opacity: 1;
    margin-top: 23px;
    font-size: 26px;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: LEFT;
    color: #666666;
}

.information-management-system-pic {
    overflow: hidden;
    width: 1200px;
    height: 586px;
    margin-top: 85px;
    opacity: 1;
}

.information-management-system-title {
    width: 440px;
    height: 39px;
    opacity: 1;
    margin-top: 23px;
    font-size: 26px;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: LEFT;
    color: #666666;
}

.information-management-system-text{
    width: 1080px;
    height: 96px;
    opacity: 1;
    margin-top: 23px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #666666;
    line-height: 24px;
    letter-spacing: 0px;
}
/* 地图 */
/* #map {
    width: 1920px;
    height: 446px;
    margin-top: 85px;
} */


/* 下一个 */
/* 尾部 */
.tail {
    overflow: hidden;
    width: 1920px;
    height: 357px;
    margin-top: 85px;
    opacity: 1;
    background: #1f2633;
}
.tail_logo {
    float: left;
    width: 152px;
    height: 42px;
    margin: 156px 105px 157px 366px;
}
.tail_line{
    float: left;
    width: 1px;
    height: 252px;
    opacity: 1;
    margin: 62px 97px 43px 0px;
}
.tail_contact-information {
    float: left;
    width: 308px;
    height: 357px;
    margin-right: 197px;
}
.tail_contact-us {
    width: 219px;
    height: 30px;
    margin: 81px 294px 16px 0px;
}
.tail_contact-us_text a{
    float: left;
    width: 80px;
    height: 30px;
    opacity: 1;
    font-size: 20px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #ffffff;
}
.tail_contact-us_en {
    float: right;
    width: 122px;
    height: 30px;
    opacity: 0.16;
    font-size: 20px;
    font-family: Source Han Sans CN, Source Han Sans CN-Medium;
    font-weight: 500;
    text-align: LEFT;
    color: #fff;
}
.tail_line1 {
    width: 308px;
    height: 1px;
    opacity: 1;
    border: 1px solid #414956;
}
.tail_add {
    width: 308px;
    height: 24px;
    margin-top: 38px;
}
.tail_add-pic {
    float: left;
    width: 20px;
    height: 20px;
}
.tail_add-content {
    float: left;
    width: 274px;
    height: 24px;
    opacity: 0.7;
    margin-left: 14px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    font-weight: 400;
    text-align: LEFT;
    color: #ffffff;
}
.tail_tel {
    width: 308px;
    height: 24px;
    margin-top: 25px;
}
.tail_tel-pic {
    float: left;
    width: 20px;
    height: 20px;
}
.tail_tel-content {
    float: left;
    width: 200px;
    height: 24px;
    opacity: 0.7;
    margin-left: 14px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    font-weight: 400;
    text-align: LEFT;
    color: #ffffff;
}
.tail_email {
    width: 308px;
    height: 24px;
    margin-top: 23px;
}
.tail_email-pic {
    float: left;
    width: 20px;
    height: 20px;
}
.tail_email-content {
    float: left;
    width: 240px;
    height: 24px;
    opacity: 0.7;
    margin-left: 14px;
    font-size: 16px;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    font-weight: 400;
    text-align: LEFT;
    color: #ffffff;
}
.tail_QR-code {
    overflow: hidden;
    width: 269px;
    height: 103px;
    margin-top: 145px;
    background-color: rgba(225, 225, 225,0.1);
}
.tail_QR-code_pic {
    float: left;
    width: 89px;
    height: 89px;
    opacity: 1;
    margin: 7px 0px 7px 8px;
    background: #fff;
}
.tail_hint {
    float: right;
    overflow: hidden;
    width: 150px;
    height: 103px;
}
.scan-it {
    width: 120px;
    height: 24px;
    opacity: .3;
    margin: 30px 73px 6px 0px;
    font-size: 12px;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    font-weight: 400;
    text-align: center;
    color: #fff;
}
.scan-it-content {
    width: 150px;
    height: 24px;
    opacity: .3;
    margin: 0px 9px 41px 0px;
    font-size: 12px;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    font-weight: 400;
    text-align: LEFT;
    color: #fff;
}
.tail p:hover {
    color: #14b84c;
}