.solution {
  width: 100%;
  padding-top: 60px;
  padding-bottom: 150px;
  background: #fff;
}
.solution .title {
  text-align: center;
  font-size: 36px;
  color: #4c4c4c;
}
.solution .describe {
  text-align: center;
  margin-top: 20px;
  font-size: 18px;
  color: #808080;
}
.solution .tab {
  margin-top: 40px;
}
.solution .tab ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}
.solution .tab li {
  width: 270px;
  height: 222px;
  margin-bottom: 20px;
  cursor: pointer;
  position: relative;
}
.solution .tab li .icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 130px;
  position: relative;
  z-index: 2;
}
.solution .tab li .icon img:last-child {
  display: none;
}
.solution .tab li .text {
  text-align: center;
  position: relative;
  z-index: 2;
}
.solution .tab li .text p {
  font-size: 24px;
  color: #5689ff;
}
.solution .tab li .text span {
  display: block;
  width: 30px;
  height: 2px;
  margin: 20px auto 0;
  background: #5689ff;
}
.solution .tab .active {
  background: #5689ff;
}
.solution .tab .active .icon img:first-child {
  display: none;
}
.solution .tab .active .icon img:last-child {
  display: block;
}
.solution .tab .active .text p {
  color: #fff;
}
.solution .tab .active .text span {
  background: #fff;
}
.solution .tab li:after {
  content: "";
  width: 100%;
  height: 0%;
  background: #5689ff;
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  transition: .3s;
}
.solution .tab li:hover img:first-child {
  display: none;
}
.solution .tab li:hover img:last-child {
  display: block;
}
.solution .tab li:hover .text p {
  color: #fff;
}
.solution .tab li:hover .text span {
  background: #fff;
}
.solution .tab li:hover:after {
  height: 100%;
}
.solution .list {
  padding: 50px;
  margin-top: 52px;
  background: #f5f5f5;
  position: relative;
}
.solution .list .triangle {
  width: 0;
  height: 0;
  border-width: 0 35px 60px;
  border-style: solid;
  border-color: transparent transparent #f5f5f5;
  position: absolute;
  top: -60px;
  left: 50%;
  margin-left: -35px;
}
.solution .list .lump {
  display: none;
  padding-bottom: 125px;
  background: #fff;
}
.solution .list .lump:nth-of-type(1) {
  display: block;
}
.solution .list .lump .pic {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
}
.solution .list .lump .text {
  width: 600px;
  text-align: center;
  color: #fff;
  position: absolute;
  left: 50%;
  top: 40px;
  margin-left: -300px;
}
.solution .list .lump .text h3 {
  font-size: 36px;
}
.solution .list .lump .text p {
  line-height: 36px;
  margin-top: 30px;
  font-size: 20px;
}
.solution .list .lump ul {
  margin-top: 65px;
  padding: 0 50px;
}
.solution .list .lump li {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 30px;
  border: 1px solid #c9c9c9;
  cursor: pointer;
}
.solution .list .lump li:last-child {
  margin-bottom: 0;
}
.solution .list .lump li .left {
  text-align: center;
  padding: 25px 0;
}
.solution .list .lump li .left img {
  display: block;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.solution .list .lump li .left img:nth-child(2) {
  display: none;
}
.solution .list .lump li .left strong {
  display: block;
  margin-top: 15px;
  font-size: 22px;
  font-weight: normal;
  color: #b2b2b2;
  position: relative;
  z-index: 2;
}
.solution .list .lump li .left:before {
  content: "";
  width: 1px;
  height: 50px;
  background: #c9c9c9;
  position: absolute;
  top: 30px;
  right: 0;
}
.solution .list .lump li .left:after {
  content: "";
  width: 0;
  height: 100%;
  background: #5689ff;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  transition: .3s;
}
.solution .list .lump li:hover {
  border: 1px solid transparent;
}
.solution .list .lump li:hover .left img:nth-child(1) {
  display: none;
}
.solution .list .lump li:hover .left img:nth-child(2) {
  display: block;
}
.solution .list .lump li:hover .left strong {
  color: #fff;
}
.solution .list .lump li:hover .left:after {
  width: 100%;
}
.solution .list .lump li .right {
  padding: 25px 60px;
}
.solution .list .lump li .right p {
  margin-top: 10px;
  font-size: 16px;
  color: #666;
  position: relative;
  z-index: 2;
}
.solution .list .lump li .right:after {
  content: "";
  width: 0;
  height: 100%;
  background: #e6e6e6;
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1;
  transition: .3s;
}
.solution .list .lump li:hover .right:after {
  width: 100%;
}
@media (max-width: 991px) {
  .solution .list .lump ul {
    padding: 0 25px;
  }
  .solution .list .lump li .left {
    padding: 20px 0;
  }
  .solution .list .lump li .right {
    padding: 20px 0;
  }
  .solution .list .lump li .left strong {
    font-size: 16px;
  }
  .solution .list .lump li .right {
    padding: 0 20px;
  }
  .solution .list .lump li .right p {
    font-size: 14px;
  }
}
@media (max-width: 767px) {
  .solution .title {
    font-size: 24px;
  }
  .solution .describe {
    font-size: 14px;
  }
  .solution .list {
    padding: 25px;
  }
  .solution .list .lump {
    padding-bottom: 50px;
  }
  .solution .list .lump .text {
    width: 100%;
    padding: 0 15px;
    margin-left: 0;
    left: 0;
  }
  .solution .list .lump .text h3 {
    font-size: 24px;
  }
  .solution .list .lump .text p {
    line-height: 28px;
    font-size: 14px;
  }
  .solution .list .lump ul {
    padding: 0 10px;
  }
  .solution .list .lump li .left {
    padding: 20px 0;
  }
  .solution .list .lump li .right {
    padding: 15px;
  }
  .solution .list .lump li .left:before {
    display: none;
  }
}