/* 头部切换 */
html, body {
    position: relative;
    height: 100%;
}
.video-container {
    position: relative;
    width: 100%;
    height: 911px;
    margin: 0 auto;
    overflow: hidden;
}
#bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.controls {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    text-align: center;
    z-index: 2;
}
.controls img {
    cursor: pointer;
}
#play-btn2{
    margin-top: 400px;
}
.hide {
    display: none;
}
.videobg{
    width: 100%;
    height: 260px;
    margin-top: -260px;
    background: url(videopic3.png)center center no-repeat;
    position: relative;
    z-index: 3;
}

/* 第一背景 */
.sectionbg1{
    background: url(bigbg1.png)center top;
    position: relative;
    z-index: 11;
}
/* 印象江苏 */
.section1{
    width: 1200px;
    margin: 0 auto;
}
.s1title{
    width: 1200px;
    margin: 0 auto 30px auto;
    text-align: center;
}
.s1cont{
    width: 1200px;
    margin: 0 auto;
    display: flex;
}
.s1link{
    width: 526px;
    height: 56px;
    margin-bottom: 15px;
    background: url(s1bg.png)center center no-repeat;
    text-align: center;
    line-height: 56px;
}
.s1link a{
    color: #333333;
    font-size: 20px;
    font-family: PingFangSC-Semibold;
    font-weight: 500;
}
.s1link.active{
    background: url(s1bghover.png)center center no-repeat;
}
.s1link.active a{
    color: #137C9A;
}
.sectionbiaoti li:last-child{
    margin-bottom: 0;
}
.s1left{
    width: 644px;
    height: 488px;
    margin-left: 30px;
    background: url(s1leftbg.png)center center no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
}
.s1neirong{
    display: none;
}
.s1neirong img{
    width: 513px;
    height: 355px;
}
/* 产业科技 */
.section2{
    margin: 70px auto 0 auto;
}
.s2title{
    width: 1200px;
    margin: 0 auto;
    text-align: center;
}
.s2cont{
    width: 1200px;
    margin: 20px auto 0 auto;
    position: relative;
}
.s2c1{
    width: 327px;
    position: absolute;
    top: 110px;
    left: 0;
}
.s2c1 a{
    font-size: 16px;
    font-weight: 500;
    font-family: PingFangSC-Semibold;
    color: #333333;
}
.s2c1 a:hover{
    color: #137C9A;
}
.s2c1 span{
    float: right;
    margin:0 60px 0 10px;
    height: 72px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.s2c1 a:nth-child(3) span{
    margin: 0 70px 0 0;
}
.s2c1 a:nth-child(1){
    width: 296px;
    height: 72px;
    margin:0 0 50px 29px;
    display: block;
    background: url(s2c1pic1.png)center center no-repeat;
}
.s2c1 a:nth-child(2){
    width: 294px;
    height: 72px;
    margin:0 0 50px 0;
    display: block;
    background: url(s2c1pic2.png)center center no-repeat;
}
.s2c1 a:nth-child(3){
    width: 296px;
    height: 72px;
    margin:0 0 0 29px;
    display: block;
    background: url(s2c1pic3.png)center center no-repeat;
}
.s2c2{
    width: 600px;
    height: 573px;
    margin: 0 auto;
    background: url(s2c2pic.png)center center no-repeat;
    position: relative;
}
.s2dian1{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 140px;
    left: 33px;
}
.s2dian2{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 260px;
    left: 6px;
}
.s2dian3{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 382px;
    left: 23px;
}
.s2dian4{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 140px;
    right: 40px;
}
.s2dian5{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 260px;
    right: 6px;
}
.s2dian6{
    width: 16px;
    height: 16px;
    background: url(s2dian.png)center center no-repeat;
    position: absolute;
    top: 382px;
    right: 23px;
}
.s2c3{
    width: 327px;
    position: absolute;
    top: 110px;
    right: 0;
}
.s2c3 a{
    font-size: 16px;
    font-weight: 500;
    font-family: PingFangSC-Semibold;
    color: #333333;
    float: right;
}
.s2c3 a:hover{
    color: #137C9A;
}
.s2c3 span{
    float: left;
    height: 72px;
    margin-left: 75px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.s2c3 a:nth-child(1){
    width: 303px;
    height: 72px;
    margin:0 24px 50px 0;
    display: block;
    background: url(s2c3pic1.png)center center no-repeat;
}
.s2c3 a:nth-child(2){
    width: 294px;
    height: 72px;
    margin:0 0 50px 0;
    display: block;
    background: url(s2c3pic2.png)center center no-repeat;
}
.s2c3 a:nth-child(3){
    width: 303px;
    height: 72px;
    margin:0 24px 0 0;
    display: block;
    background: url(s2c3pic3.png)center center no-repeat;
}
.s2c4{
    width: 1200px;
    height: 210px;
    background: url(s2c4bg.png)center center no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -20px;
}

/* 改革开放 */
.s3title{
    width: 1200px;
    margin: 70px auto 30px auto;
    text-align: center;
}
.s3cont1{
    display: flex;
    width: 1200px;
    margin: 0 auto;
}
.s3c1{
    width: 277px;
    height: 313px;
    background: url(s3c1pic.png)center center no-repeat;
    position: relative;
    margin-right: 30px;
}
.s3c2{
    width: 277px;
    height: 313px;
    background: url(s3c3pic511.png)center center no-repeat;
    position: relative;
    margin-right: 30px;
}
.s3c3{
    width: 277px;
    height: 313px;
    background: url(s3c5pic.png)center center no-repeat;
    position: relative;
    margin-right: 30px;
}
.s3c4{
    width: 277px;
    height: 313px;
    background: url(s3c6pic.png)center center no-repeat;
    position: relative;
}
.s3cont1 div a,.s3cont2 div a{
    width: 144px;
    height: 163px;
    font-size: 16px;
    background: url(s3contbg.png)center center no-repeat;
    position: absolute;
    top: 81px;
    left: 72px;
    color: #ffffff;
    font-weight: 500;
    font-family: PingFangSC-Semibold;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.s3cont2{
    display: flex;
    width: 891px;
    margin: -44px auto 0 auto;
}
.s3c5{
    width: 277px;
    height: 313px;
    background: url(gs3c5pic.png)center center no-repeat;
    position: relative;
    margin-right: 30px;
}
.s3c6{
    width: 277px;
    height: 313px;
    background: url(gs3c6pic.png)center center no-repeat;
    position: relative;
    margin-right: 30px;
}
.s3c7{
    width: 277px;
    height: 313px;
    background: url(s3c7pic511.png)center center no-repeat;
    position: relative;
}

/* 文化旅游 */
.s4title{
    width: 1200px;
    margin: 70px auto 30px auto;
    text-align: center;
}
.s4cont{
    width: 1200px;
    height: 447px;
    margin: 0 auto;
    position: relative;
}
.s4cont div{
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-family: PingFangSC-Semibold;
}
.s4cont div a{
    color: #ffffff;
    font-weight: 500;
}
.s4pic1{
    width: 205px;
    height: 447px;
    position: absolute;
    top: 0;
    left: 0;
    background: url(s4pic1.png)center center no-repeat;
}
.s4pic2{
    width: 205px;
    height: 447px;
    position: absolute;
    top: 0;
    left: 235px;
    background: url(s4pic2g.png)center center no-repeat;
}
.s4pic3{
    width: 260px;
    height: 141px;
    position: absolute;
    top: 0;
    left: 470px;
    background: url(s4pic3.png)center center no-repeat;
}
.s4pic4{
    width: 260px;
    height: 141px;
    position: absolute;
    top: 153px;
    left: 470px;
    background: url(s4pic4.png)center center no-repeat;
}
.s4pic5{
    width: 260px;
    height: 141px;
    position: absolute;
    bottom: 0;
    left: 470px;
    background: url(s4pic5.png)center center no-repeat;
}
.s4pic6{
    width: 205px;
    height: 447px;
    position: absolute;
    top: 0;
    right: 235px;
    background: url(s4pic6.png)center center no-repeat;
}
.s4pic7{
    width: 205px;
    height: 447px;
    position: absolute;
    top: 0;
    right: 0;
    background: url(s4pic7.png)center center no-repeat;
}

/* 交通出行 */
.s5title{
    width: 1200px;
    margin: 70px auto 30px auto;
    text-align: center;
}
.s5cont{
    width: 1200px;
    height: 432px;
    margin: 0 auto;
    position: relative;
}
.s5cont a div{
    font-size: 16px;
    font-weight: 500;
    color: #ffffff;
    line-height: 24px;
    position: absolute;
    bottom: 10px;
    left: 15px;
    font-family: PingFangSC-Semibold;
}
.s5pic1{
    width: 278px;
    height: 372px;
    display: block;
    background: url(s5pic1.png)center center no-repeat;
    position: absolute;
    top: 0;
    left: 0;
}
.s5pic2{
    width: 278px;
    height: 372px;
    display: block;
    background: url(s5pic2.png)center center no-repeat;
    position: absolute;
    top: 60px;
    left: 308px;
}
.s5pic3{
    width: 278px;
    height: 372px;
    display: block;
    background: url(s5pic3.png)center center no-repeat;
    position: absolute;
    top: 0;
    right: 308px;
}
.s5pic4{
    width: 278px;
    height: 372px;
    display: block;
    background: url(gs5pic4.png)center center no-repeat;
    position: absolute;
    top: 60px;
    right: 0;
}

/* 生态环境 */
.s6title{
    width: 1200px;
    margin: 70px auto 30px auto;
    text-align: center;
}
.s6cont{
    width: 1200px;
    height: 670px;
    margin: 0 auto;
    background: url(s6bg.png)center top no-repeat;
    position: relative;
}
.s6cont a{
    font-family: PingFangSC-Semibold;
    color: #333333;
    font-weight: 500;
    font-size: 16px;
    text-align: center;
    display: block;
}
.s6cont a:hover{
    color: #3d6395;
}
.s6cont a img{
    margin-bottom: 15px
}
.s6pic1{
    width: 225px;
    position: absolute;
    top: 5px;
    left: 206px;
}
.s6pic2{
    width: 170px;
    position: absolute;
    top: 0px;
    right: 280px;
}
.s6pic3{
    width: 218px;
    position: absolute;
    top: 220px;
    left: 50px;
}
.s6pic4{
    width: 356px;
    position: absolute;
    top: 130px;
    left: 415px;
}
.s6pic5{
    width: 217px;
    position: absolute;
    top: 165px;
    right: 55px;
}
.s6pic6{
    width: 230px;
    position: absolute;
    top: 450px;
    left: 280px;
}
.s6pic7{
    width: 210px;
    position: absolute;
    top: 420px;
    right: 250px;
}

/* 城市名片 */
.s7title{
    width: 1200px;
    margin: 70px auto 30px auto;
    text-align: center;
}
.ditu {
    max-width: 1204px;
    margin: 0 auto;
    overflow: hidden;
}
#map-container {
    width: 424px;
    height: 440px;
    float: right;
}
.city-info-panel {
    width: 780px;
    height: 440px;
    float: right;
    margin-bottom: 120px;
}
.city-info h2{
    display: none;
}
.city-info img {
    margin-top: 40px;
    width: 780px;
    height: 383px;
}