.research-model {
  --swiper-theme-color: #ccd5dd; /* 设置Swiper风格 */
  --swiper-navigation-color: #ccd5dd; /* 单独设置按钮颜色 */
  --swiper-navigation-size: 42px; /* 设置按钮大小 */
  --swiper-navigation-sides-offset: 10px;
}
.research-model .swiper-button-next, .research-model .swiper-button-prev{
  width: 42px;
}
.head-bg {
  background: url(../images/research/head-bg.png) no-repeat center / 1920px;           
  width: 100%;
}
.head-new {
  background-color: #f9fdff;
}
.research-center {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.research-2 {
  margin: 48px 0;
}

.research-img {
  width: 1200px;
  height: 668px;
  background: url(../images/research/research-2-img.png) no-repeat center;
  background-size: cover;
}
.contain_title .title-2 {
  margin-top: 16px;
  color: #303133;
}
.research-3 {
  margin-top: 40px;
}

.research-type {
  width: 1200px;
  display: flex;
  margin-top: 60px;
  color: #fff;
  flex-wrap: wrap;
}
.research-type-m {
  display: none;
}
.research-type .research-type-item {
  width: 400px;
  height: 185px;
  padding: 40px 20px;
  position: relative;
  box-sizing: border-box;
}
.research-type .type-item-title {
  font-weight: 500;
  font-size: 24px;
  color: #ffffff;
  position: relative;
}
.research-type .type-item-title::after {
  content: " ";
  position: absolute;
  bottom: -12px;
  left: 0;
  background-color: #fff;
  width: 36px;
  height: 4px;
  background: #ffffff;
  border-radius: 2px;
}
.research-type .type-item-mask {
  position: absolute;
  height: 370px;
  width: 400px;
  transform: scale(0);
  transform-origin: top left;
  z-index: -1;
}
.research-type .bottom .type-item-mask {
  transform-origin: bottom left;
}
.research-type .research-type-item:hover .type-item-mask {
  display: block;
  background-color: #2672ff;
  color: #fff;
  transform: scale(1);
  top: 0;
  left: 0;
  z-index: 10;
  padding: 40px 20px;
  box-sizing: border-box;
  transition: all 0.2s ease-out;
}
.research-type .research-type-item.bottom:hover .type-item-mask {
  top: -185px;
}
.type-item-1 {
  background: url(../images/research/research-type1.png) no-repeat;
  background-size: cover;
}
.type-item-2 {
  background: url(../images/research/research-type2.png) no-repeat;
  background-size: cover;
}
.type-item-3 {
  background: url(../images/research/research-type3.png) no-repeat;
  background-size: cover;
}
.type-item-4 {
  background: url(../images/research/research-type4.png) no-repeat;
  background-size: cover;
}
.type-item-5 {
  background: url(../images/research/research-type5.png) no-repeat;
  background-size: cover;
}
.type-item-6 {
  background: url(../images/research/research-type6.png) no-repeat;
  background-size: cover;
}
.mask-list {
  margin-top: 40px;
}
.mask-item {
  margin-top: 16px;
}
.research-4 {
  background: #f2f7f9;
  height: 580px;
  margin-top: 80px;
}
.swiper {
  width: 1088px;
  overflow: hidden;
}
.research-model {
  width: 1200px;
  display: flex;
  position: relative;
  margin-top: 48px;
}
.research-model .model-item {
  width: 248px;
  height: 336px;
  background: #ffffff;
  box-shadow: 0 8px 24px 0 #e1e4eb61;
  border-radius: 8px;
  padding: 30px 24px;
  position: relative;
  margin-right: 32px;
  box-sizing: border-box;
}
.research-model .model-item:last-child {
  margin-right: 0;
}
.research-model .swiper-button-prev:after {
  content: " ";
  background: url(../images/research/left.svg) no-repeat;
  background-size: cover;
  width: 42px;
  height: 42px;
}
.research-model .swiper-button-next:after {
  content: " ";
  background: url(../images/research/right.svg) no-repeat;
  background-size: cover;
  width: 42px;
  height: 42px;
}
.model-item .model-type-title {
  font-size: 14px;
  color: #303133;
  margin-bottom: 16px;
  margin-left: 12px;
}
.model-item .model-type-title::before {
  content: " ";
  width: 4px;
  height: 14px;
  background: #ff8181;
  border-radius: 8px;
  border-radius: 2px;
  position: absolute;
  left: 24px;
  top: 32px;
}
.model-item.model-type-2 .model-type-title::before {
  background: #75daa2;
}
.model-item.model-type-3 .model-type-title::before {
  background: #8981ff;
}
.model-item.model-type-4 .model-type-title::before {
  background: #ffb745;
}
.model-item .model-title {
  font-weight: 500;
  font-size: 18px;
  color: #303133;
  margin-bottom: 32px;
}
.model-item .model-content {
  font-size: 14px;
  color: #7b858d;
  letter-spacing: 0;
  line-height: 24px;
}
.model-item .model-tag {
  background: #dfeaff;
  border-radius: 4px;
  padding: 4px;
  color: #2672ff;
  position: absolute;
  bottom: 30px;
  display: inline-block;
  font-size: 12px;
}
.research-5 {
  margin-top: 60px;
}
.research-quantitative {
  display: flex;
  width: 1200px;
  margin: 0 auto;
  margin-top: 60px;
}
.research-quantitative .quan-img {
  width: 580px;
  height: 460px;
  background: url(../images/research/quantitative.jpg) no-repeat;
  background-size: cover;
}

.research-quantitative .quan-content {
  width: 542px;
  margin-left: 32px;
}
.quan-list li {
  margin-bottom: 28px;
}
.quan-list li:last-child {
  margin-bottom: 0;
}
.quan-list .title {
  font-weight: 500;
  font-size: 22px;
  color: #222222;
  letter-spacing: 0;
  margin-bottom: 7px;
}
.quan-list .describe {
  font-size: 16px;
  color: #666666;
}
.research-6 {
  margin-top: 60px;
  background: url(../images/research/research-6-bg.png) no-repeat center;
  padding-bottom: 68px;
  background-size: contain;
}
.research-qualitative {
  width: 1224px;
}
.quali-list {
  display: flex;
  flex-wrap: wrap;
  margin-top: 48px;
}
.quali-list li {
  width: 384px;
  height: 232px;
  background: #ffffff;
  box-shadow: 0 14px 30px 0 #e2e9f0;
  border-radius: 6px;
  margin: 12px;
  padding: 30px 24px;
  box-sizing: border-box;
  position: relative;
}
.quali-list .title {
  font-weight: 500;
  font-size: 20px;
  color: #303133;
  margin-bottom: 32px;
}
.quali-list .title::after {
  content: " ";
  position: absolute;
  right: 24px;
  top: 24px;
  width: 40px;
  height: 40px;
}
.quali-list .describe {
  color: #7b858d;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  flex-wrap: wrap;
  height: 104px;
}
.quali-list li:nth-child(1) .title::after {
  background: url(../images/research/01.png) no-repeat;
  background-size: cover;
}
.quali-list li:nth-child(2) .title::after {
  background: url(../images/research/02.png) no-repeat;
  background-size: cover;
}
.quali-list li:nth-child(3) .title::after {
  background: url(../images/research/03.png) no-repeat;
  background-size: cover;
}
.quali-list li:nth-child(4) .title::after {
  background: url(../images/research/04.png) no-repeat;
  background-size: cover;
}
.quali-list li:nth-child(5) .title::after {
  background: url(../images/research/05.png) no-repeat;
  background-size: cover;
}
.quali-list li:nth-child(6) .title::after {
  background: url(../images/research/06.png) no-repeat;
  background-size: cover;
}
@media (max-width: 768px) {
  .head-bg {
    background: url(../images/research/head-bg-m.png) no-repeat center;
    background-size: cover;
  }
  .research-2 {
    margin: 30px 0;
  }
  .research-img {
    width: 100%;
    background: url(../images/research/research-2-img-m.png) no-repeat center;
    background-size: contain;
  }
  .contain_title .title-2 {
    margin: 8px 12px 0;
  }
  .research-3 {
    margin-top: 0;
  }
  .research-4 {
    height: 492px;
    margin-top: 30px;
  }
  .research-model{
    width: 100%
  }
  .research-model .swiper-button-prev:after{
    display: none;
  }
  .research-model .swiper-button-next:after{
    display: none;
  }
  .research-model .model-item {
    width: 248px;
    height: 336px;
    border-radius: 8px;
    margin: 0 16px;
  }
  .research-type {
    display: none;
  }
  .research-type-m {
    display: block;
    width: 100%;
  }
  .type-item-container {
    background: #f2f7f9;
    border-radius: 3px;
    padding: 0 20px;
    margin: 12px;
    margin-top: 30px;
  }
  .research-type-m .type-item-title-m {
    cursor: pointer;
    position: relative;
    font-size: 18px;
    color: #303133;
    padding: 20px 0;
    position: relative;
    font-weight: 700;
  }
  .research-type-m .type-item-title-m:last-child {
    margin-bottom: 0;
  }
  .research-type-m .type-item-title-m::after {
    content: " ";
    background: url(../images/research/arrow-down.svg) no-repeat;
    width: 21px;
    height: 21px;
    position: absolute;
    right: 0;
  }
  .type-item-m.selected .type-item-title-m {
    color: #2672ff;
  }
  .type-item-m.selected .type-item-title-m::after {
    background: url(../images/research/arrow-up.svg) no-repeat;
  }
  .item-list {
    font-weight: 400;
    font-size: 14px;
    color: #7b858d;
    display: none;
  }
  .item-list .item {
    color: #7b858d;
    font-size: 14px;
    padding: 10px;
  }
  .type-item-m.selected .item-list {
    display: block;
  }
  .research-quantitative {
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 16px;
  }
  .research-quantitative .quan-img {
    width: 343px;
    height: 272px;
    background-size: contain;
  }
  .research-quantitative .quan-content {
    width: auto;
    margin: 16px 16px 0;
  }
  .research-qualitative {
    width: 100%;
  }
  .quan-list .title {
    font-size: 16px;
    margin-bottom: 8px !important;
    padding: 0;
  }
  .quan-list .describe {
    font-size: 13px;
  }
  .research-6 {
    margin-top: 60px;
    background: url(../images/research/research-6-bg-m.png) no-repeat center/ 100%;
    padding-bottom: 30px;
  }
  .quali-list {
    margin-top: 16px;
  }
  .quali-list li {
    padding: 28px 21px;
    margin: 12px 12px 0;
    height: 189px;
    width: 100%;
  }
  .quali-list li:first-child {
    margin-top: 0;
  }
  .quali-list .title{
    font-size: 16px;
    padding: 0;
    margin-bottom: 14px !important;
  }
  .quali-list .title::after{
    width: 36px;
    height: 36px;
  }
  .quali-list .describe{
    height: 110px;
    line-height: 1.8;
  }
  
}