.service {
  width: 100%;
  margin: 0 auto;
  position: relative;
  background: url(../images/index/fuwu-bg2.jpg) no-repeat center center;
  background-size: cover;
  height: 830px;
  margin-top: -200px;
  z-index: 10;
}
.service .service-wrap {
  width: 1200px;
  margin: 0 auto;
}
.service .service-wrap .service-title {
  width: 100%;
  height: 200px;
  text-align: center;
}
.service .service-wrap .service-title img {
  margin-top: 90px;
  width: 546px;
  height: 99px;
}
.service .service-wrap .title-line {
  position: absolute;
  top: 470px;
}
.service .service-wrap .service-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  padding-top: 80px;
  box-sizing: border-box;
}
.service .service-wrap .service-list li {
  width: 272px;
  height: 190px;
  padding-top: 40px;
  margin-right: 40px;
  margin-bottom: 40px;
  text-align: center;
  position: relative;
}
.service .service-wrap .service-list li .top {
  position: absolute;
  width: 100%;
  z-index: 2;
  top: 1px;
}
.service .service-wrap .service-list li .top img {
  width: 108px;
  height: 108px;
  cursor: pointer;
  transition: all 0.5s linear;
}
.service .service-wrap .service-list li .top .show {
  display: inline-block;
}
.service .service-wrap .service-list li .top .hidden {
  display: none;
}
.service .service-wrap .service-list li .top .rot {
  transform: rotateY(180deg);
}
.service .service-wrap .service-list li .top h4 {
  font-size: 20px;
  font-weight: bold;
  height: 55px;
  line-height: 55px;
  background-color: #f5f5f5;
}
.service .service-wrap .service-list li .middle {
  position: absolute;
  top: 120px;
  margin-bottom: 10px;
  width: 100%;
}
.service .service-wrap .service-list li .middle p {
  height: 46px;
  overflow: hidden;
  color: #999999;
  font-size: 16px;
  font-weight: 400;
}
.service .service-wrap .service-list li .bottom {
  position: absolute;
  top: 180px;
  width: 100%;
  text-align: center;
}
.service .service-wrap .service-list li .bottom .disline {
  width: 60px;
  height: 4px;
  margin: 0 auto;
}
.service .service-wrap .service-list li .bottom .close {
  background-color: #666666;
}
.service .service-wrap .service-list li .bottom .open {
  background-color: #1b60d5;
}

.dev-platform {
  width: 100%;
}
.dev-platform .dev-platform-wrap {
  width: 100%;
  height: 980px;
  margin: 0 auto;
  background: url("../images/index/pingtai-bg.png") no-repeat center center;
  background-size: cover;
}
.dev-platform .dev-platform-wrap .dev-platform-title {
  width: 100%;
  text-align: center;
  margin-bottom: 60px;
}
.dev-platform .dev-platform-wrap .dev-platform-title img {
  width: 640px;
  height: 120px;
  margin-top: 90px;
}
.dev-platform .dev-platform-wrap .dev-platform-nav {
  width: 980px;
  margin: 0 auto;
  color: #ffffff;
}
.dev-platform .dev-platform-wrap .dev-platform-nav ul {
  display: flex;
  flex-wrap: nowrap;
  font-size: 20px;
}
.dev-platform .dev-platform-wrap .dev-platform-nav ul li {
  width: 20%;
  text-align: center;
  height: 24px;
  cursor: pointer;
}
.dev-platform .dev-platform-wrap .dev-platform-nav ul .active h4 {
  color: #3b84ff;
  font-size: 24px;
  font-weight: bold;
  line-height: 24px;
}
.dev-platform .dev-platform-wrap .dev-platform-content {
  width: 1200px;
  margin: 20px auto 0;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li {
  display: none;
  align-items: center;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-img {
  width: 720px;
  overflow: hidden;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-img img {
  height: 480px;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text {
  width: 416px;
  height: 360px;
  background-color: #233b69;
  border-radius: 0 10px 10px 0;
  padding: 40px 0 0 40px;
  box-sizing: border-box;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text .con-text-title {
  color: #ffffff;
  font-size: 30px;
  font-family: "siyuanb";
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text .con-text-title .disline {
  width: 100px;
  height: 10px;
  background-color: #1b60d5;
  margin: 15px 0 32px 0;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text .con-text-main {
  color: #ffffff;
  font-size: 18px;
  font-family: "siyuanr";
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text .con-text-main p {
  padding: 10px;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li .con-text .con-text-main p img {
  margin-right: 13px;
}
.dev-platform .dev-platform-wrap .dev-platform-content ul li.active {
  display: flex;
}

.solve-problem {
  width: 100%;
  margin: 0 auto;
  background: url("../images/index/wenti-bg.png") no-repeat center center;
  background-size: cover;
}
.solve-problem .solve-problem-wrap {
  width: 1200px;
  height: 980px;
  display: flex;
  align-items: center;
  margin: 0 auto;
  padding: 132px 0;
  box-sizing: border-box;
}
.solve-problem .solve-problem-wrap .slove-problem-left {
  width: 580px;
  height: 676px;
  margin: 0 20px;
  box-shadow: 0 0 20px rgba(40, 82, 146, 0.8), 0 0 20px rgba(40, 82, 146, 0.6), 0 0 20px rgba(40, 82, 146, 0.4), 0 0 20px rgba(40, 82, 146, 0.2);
}
.solve-problem .solve-problem-wrap .slove-problem-left ul {
  height: 100%;
  background-size: cover;
}
.solve-problem .solve-problem-wrap .slove-problem-left ul li {
  width: 640px;
  height: 720px;
  display: none;
  padding: 80px 0 0 66px;
  box-sizing: border-box;
}
.solve-problem .solve-problem-wrap .slove-problem-left ul li h2 {
  width: 100%;
  font-size: 32px;
  font-family: siyuanb;
  font-weight: bold;
  color: rgb(255, 255, 255);
  line-height: 48px;
}
.solve-problem .solve-problem-wrap .slove-problem-left ul li p {
  width: 509px;
  height: 62px;
  font-size: 18px;
  font-family: siyuanb;
  font-weight: 400;
  color: rgb(255, 255, 255);
  line-height: 28px;
  margin: 12px 0 30px 0;
}
.solve-problem .solve-problem-wrap .slove-problem-left ul li a {
  display: inline-block;
  width: 120px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  border-radius: 5px;
  background-color: #1b60d5;
  color: #ffffff;
  font-size: 18px;
  font-size: siyuanr;
}
.solve-problem .solve-problem-wrap .slove-problem-left ul li.active {
  display: block;
}
.solve-problem .solve-problem-wrap .slove-problem-right {
  width: 600px;
  height: 700px;
}
.solve-problem .solve-problem-wrap .slove-problem-right .title {
  margin-left: 42px;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list {
  display: flex;
  flex-wrap: wrap;
  margin-top: 104px;
  width: 600px;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list li {
  width: 300px;
  height: 240px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: url(../images/solution/land/banner.jpg) no-repeat center center;
  background-size: cover;
  cursor: pointer;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list li h2 {
  height: 36px;
  font-size: 24px;
  font-family: siyuanb;
  font-weight: bold;
  color: rgb(255, 255, 255);
  line-height: 36px;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list li h2 p {
  width: 100%;
  text-align: center;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list li h2 p img {
  width: 18px;
  height: 18px;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list .first {
  background: url(../images/solution/flood/banner.jpg) no-repeat center center;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list .second {
  background: url(../images/solution/fire/banner.jpg) no-repeat center center;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list .third {
  background: url(../images/solution/land/banner.jpg) no-repeat center center;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list .fourth {
  background: url(../images/solution/electrical/banner.jpg) no-repeat center center;
}
.solve-problem .solve-problem-wrap .slove-problem-right ul.problem-list .active > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(to top, rgb(20, 20, 20), rgba(0, 0, 0, 0));
}

.why-chose {
  width: 100%;
  margin: 0 auto;
  background: url("../images/index/why-bg.jpg") no-repeat center center;
  background-size: cover;
  background-attachment: fixed;
}
.why-chose .why-chose-wrap {
  width: 1200px;
  height: 500px;
  margin: 0 auto;
  padding-top: 82px;
}
.why-chose .why-chose-wrap .why-chose-title {
  text-align: center;
  margin-bottom: 100px;
}
.why-chose .why-chose-wrap ul.why-chose-list {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
}
.why-chose .why-chose-wrap ul.why-chose-list li {
  width: 33%;
  display: flex;
}
.why-chose .why-chose-wrap ul.why-chose-list li .right {
  margin-left: 24px;
}
.why-chose .why-chose-wrap ul.why-chose-list li .right h4 {
  width: 64px;
  height: 32px;
  font-size: 32px;
  font-family: siyuanb;
  font-weight: bold;
  color: #ffffff;
  line-height: 48px;
  margin-bottom: 20px;
}
.why-chose .why-chose-wrap ul.why-chose-list li .right p {
  width: 176px;
  height: 48px;
  font-size: 16px;
  font-family: siyuanr;
  font-weight: 400;
  color: rgb(255, 255, 255);
  line-height: 24px;
}

.swiper-container .swiper-slide {
  text-align: center;
}
.swiper-container .swiper-slide img {
  width: 100%;
}
.swiper-container .swiper-button-prev {
  color: #ffffff;
  left: 140px;
}
.swiper-container .swiper-button-next {
  color: #ffffff;
  right: 140px;
}