.center {
  width: 1200px;
  margin: 0 auto;
}

a:hover {
  color: #ffff;
}

a {
  color: #ffff;
}

div {
  box-sizing: border-box;
}

.common_div {
  padding: 60px 0;
  text-align: center;
}

.common_div .common_title {
  margin-bottom: 25px;
  font-size: 36px;
  font-weight: 700;
  color: #323232;
}

.common_div .common_tic {
  font-size: 18px;
  font-weight: 500;
  color: #969696;
  letter-spacing: 0.18px;
}


/* banner */
.banner {
  margin: 0 auto;
  width: 1920px;
  height: 600px;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/%E7%BB%84%2041.png);
  background-repeat: no-repeat;
}

.banner>.center>div {
  float: left;
}

.banner>.center>.right {
  margin-top: 113px;
}

.banner>.center .right_img {
  margin-bottom: 43px;
}

.banner>.center>.right .right_bottom a {
  display: inline-block;
  width: 135px;
  height: 43px;
  background: #f1b74b;
  border-radius: 4px;
  color: #ffff;
  font-size: 15px;
  text-align: center;
  line-height: 43px;
  transition: all .5s;
}

.banner>.center>.right .right_bottom a:hover {
  color: #0063ff;
}

.banner>.center>.left {
  margin-top: 94px;
  margin-left: 61px;
}



/* scene */
.scene {
  padding-top: 65px;
  height: 615px;
  background-color: #f5f5f5;
}

.scene_title {
  margin-bottom: 65px;
  font-size: 36px;
  color: #323232;
  font-weight: 700;
  text-align: center;
}

.scene_box .info {
  float: left;
  width: 590px;
  height: 369px;
}

.scene_box .info:first-child {
  margin-right: 20px;
}

.scene_box .info .info_top {
  padding: 50px 0px 31px 30px;
  height: 219px;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/2.png);
}

.scene_box .info:first-child .info_top {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/1.png);
}

.scene_box .info .info_top h5 {
  margin-bottom: 12px;
  font-size: 30px;
  font-weight: 500;
  color: #ffffff;
}

.scene_box .info .info_top p {
  margin-bottom: 32px;
  font-size: 24px;
  font-weight: 500;
  color: #ffffff;
}

.scene_box .info .info_top a {

  font-size: 14px;
  font-weight: 500;
  color: #ffffff;
}

.scene_box .info .info_top a i {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #ffffff;
}

.scene_box .info .info_bottom {
  height: 150px;
  padding: 35px 30px 0px 30px;
  font-size: 15px;
  font-weight: 500;
  color: #969696;
  line-height: 27px;
  letter-spacing: 0.08px;
  background-color: #ffff;
  border: 1px solid #e5e5e5;
}


/* ecosystem */

.ecosystem {
  height: 794px;
}

.ecosystem_info>div {
  float: left;
  width: 445px;
}

.ecosystem_info>.right>div {
  width: 445px;
  height: 500px;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/1-1.png);
}

.ecosystem_introduce {
  position: relative;
}

.ecosystem_info_below {
  padding: 23px;
  position: absolute;
  overflow: hidden;
  bottom: 0px;
  width: 100%;
  height: 80px;
  opacity: 0.95;
  background: #0486f3;
  transition: all .3s;
}

.ecosystem_introduce:hover .ecosystem_info_below {
  height: 100%;
}

.ecosystem_info_below:hover .text {
  display: none;
}

.ecosystem_info_below .text {
  font-size: 24px;
  color: #ffffff;
  letter-spacing: 0.24px;
}

.ecosystem_message .title {
  margin-bottom: 25px;
  font-size: 24px;
  color: #ffffff;
  letter-spacing: 0.24px;
}


.ecosystem_message .tic {
  margin-bottom: 35px;
  font-size: 16px;
  font-weight: 400;
  color: #ffffff;
  line-height: 26px;
  transform: translateX(-445px);
  transition: all .5s;
}

.ecosystem_message .a a {
  display: block;
  width: 98px;
  height: 33px;
  border: 1px solid #ffffff;
  border-radius: 2px;
  text-align: center;
  line-height: 33px;
  transform: translateX(-445px);
  transition: all 1s;
}

.ecosystem_message {
  display: none;
  transition: all .2s;
}

.ecosystem_info_below:hover .ecosystem_message {
  display: block;
}
.ecosystem_info_below:hover .tic.active{
  transform: translateX(0);
}
.ecosystem_info_below:hover .a a.active{
  transform: translateX(0);
}

.ecosystem_info>.left {
  margin-left: 10px;
  width: 745px;
}

.ecosystem_info>.left>div {
  float: left;
  width: 367px;
  height: 245px;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/2-1.png);
}

.ecosystem_info>.left>div:nth-child(2) {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/2-2.png);
}

.ecosystem_info>.left>div:nth-child(3) {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/3-1.png);
}

.ecosystem_info>.left>div:nth-child(4) {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/3-2.png);
}

.ecosystem_info>.left>div .ecosystem_info_below {
  background: #74c558;
}

.ecosystem_info>.left>div:nth-child(2) .ecosystem_info_below {
  background: #4fc8ba;
}

.ecosystem_info>.left>div:nth-child(3) .ecosystem_info_below {
  background: #4fc8ba;
}

.ecosystem_info>.left>div:nth-child(2n) {
  margin-left: 10px;
}

.ecosystem_info>.left>div:nth-of-type(2) {
  margin-bottom: 10px;
}


/* scheme */

.scheme {
  padding-bottom: 78px;
  background: #f5f5f5;
}

.scheme_box {
  display: flex;
  justify-content: space-between;
}

.scheme_info {
  position: relative;
  padding-top: 40px;
  padding-left: 29px;
  width: 392px;
  height: 480px;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/_1.png);
  overflow: hidden;
}


.scheme_info:nth-child(2) {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/_2.png);
}

.scheme_info:nth-child(3) {
  background-image: url(https://qiniugw.sdwanyue.com/20231226/_3.png);
}

.scheme_text {
  font-size: 24px;
  color: #ffffff;
  transition: all .5s;
}


.scheme_superstratum {
  padding: 99px 29px 0 29px;
  position: absolute;
  top: -480px;
  left: 0;
  width: 100%;
  height: 100%;
  background: #3d5db2;
  transition: all .5s;
}

.scheme_superstratum .title {
  margin-bottom: 29px;
  font-size: 24px;
  font-family: Source Han Sans CN, Source Han Sans CN-Medium;
  font-weight: 500;
  color: #ffffff;
  letter-spacing: 0.24px;
}

.scheme_superstratum .tic {
  font-size: 16px;
  color: #ffffff;
  line-height: 25px;
  letter-spacing: 0.16px;
  color: #ffffff;
}

.scheme_superstratum>div {
  width: 100%;
  height: 100%;
  position: relative;
}

.scheme_superstratum a {
  position: absolute;
  bottom: 20px;
  right: 20px;
}

.scheme_info:hover .scheme_superstratum {
  top: 0;
}


/* cost */
.cost {
  margin: 0 auto;
  width: 1920px;
  height: 541px;
  background-image: url(https://qiniugw.sdwanyue.com/20231226/bj.png);
}

.cost img {
  margin-top: 78px;
}


.flow {
  height: 480px;
}

.flow .center {
  margin-top: 75px;
  display: flex;
  justify-content: space-between;
}

.flow_box {
  display: flex;
  flex-direction: column;
  align-items: center;
  /* justify-content: space-around; */
  width: 287px;
  height: 330px;
}

.flow_box .flow_title {
  margin-top: 15px;
  margin-bottom: 23px;
  font-size: 20px;
  font-weight: 500;
  color: #323232;
  text-align: center;
  letter-spacing: 0.2px;
}

.flow_box .flow_tic {
  font-size: 15px;
  text-align: center;
  color: #646464;
  line-height: 26px;
  letter-spacing: 0.15px;
}

/* solve */
.solve {
  padding-top: 75px;
  height: 941px;
  background: #f5f5f5;
}

.solve .title {
  margin-bottom: 60px;
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  color: #323232;
  letter-spacing: 0.36px;
}

.solve_box {
  width: 100%;
  height: 580px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
}

.solve_info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-content: space-evenly;
  width: 222px;
  height: 277px;
  background: #ffffff;
  border: 1px solid #ededed;
  transition: all .2s;
}

.solve_info:hover {
  box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.15);
}

.solve_info span {
  font-size: 18px;
  font-weight: 500;
  color: #323232;
  letter-spacing: 0.18px;
}

.solve_info img {
  width: 158px;
  height: 158px;
}

.solve_a {
  margin-top: 60px;
}

.solve_a a {
  margin: 0 auto;
  display: block;
  width: 192px;
  height: 60px;
  background: #0486f3;
  border-radius: 2px;
  text-align: center;
  line-height: 60px;
}


/* why_choose */
.why_choose {
  padding-top: 92px;
  padding-bottom: 80px;
  height: 1280px;
}

.why_choose_top {
  width: 100%;
  height: 65px;
}

.why_choose_top .left {
  float: left;
  width: 350px;
}

.why_choose_top .left .title {

  margin-bottom: 10px;
  font-size: 34px;
  font-weight: 600;
  line-height: 34px;
  color: #121212;
}

.why_choose_top .left .tic {
  font-size: 15px;
  color: #646464;
  letter-spacing: 0.38px;
}

.why_choose_top .right {
  float: right;
  width: 737px;
  font-size: 15px;
  text-align: right;
  color: #666666;
  line-height: 23px;
  letter-spacing: 0.38px;
}

.why_choose_bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
  height: 980px;
  margin-top: 59px;
}

.why_choose_info {
  width: 376px;
  height: 475px;
  background: #ffff;
  box-shadow: 0px 4px 8px 0px rgba(0, 0, 0, 0.04);
}

.why_choose_info_img {
  position: relative;
  width: 100%;
  height: 264px;
}

.why_choose_info_img .position {
  position: absolute;
  right: 33px;
  bottom: -42px;
  width: 74px;
  height: 74px;
  overflow: hidden;
}

.why_choose_info_img .position img {
  transition: all .5s;
}

.why_choose_info:hover .why_choose_info_img .position img:nth-child(1) {
  opacity: 0;
}

.why_choose_info:hover .why_choose_info_img .position img:nth-child(2) {
  transform: translateY(-74px);
}

.why_choose_info_message {
  padding-top: 40px;
  padding-left: 25px;
}

.why_choose_info_message .title {
  font-size: 20px;
  font-weight: 500;
  color: #323232;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: all .2s;
}

.why_choose_info_message .tic {
  margin-bottom: 28px;
  margin-top: 22px;
  width: 299px;
  font-size: 15px;
  color: #666666;
  line-height: 22px;
  letter-spacing: 0.38px;
}

.why_choose_info_message a {
  display: block;
  font-size: 15px;
  color: #323232;
  line-height: 22px;
  letter-spacing: 0.38px;
  transition: all .2s;
}

.why_choose_info_message a img {
  vertical-align: middle;
  transition: all .5s;
}

.why_choose_info_message a img:nth-child(2) {
  display: none;
}

.why_choose_info:hover .why_choose_info_message a img:nth-child(2) {
  display: inline-block;
}

.why_choose_info:hover .why_choose_info_message a img:nth-child(1) {
  display: none;
}


.why_choose_info:hover .why_choose_info_message .title {
  color: #0486F3;
}

.why_choose_info:hover .why_choose_info_message a {
  color: #0486F3;
}