.w {
  width: 1137px;
}

.top-card {
  padding: 30px 0 130px;
  box-sizing: border-box;
}
.top-card .title {
  font-size: 52px;
  color: #3eaef4;
  margin-bottom: 70px;
  font-weight: bold;
}
.top-card .desc p {
  color: #808080;
  font-size: 16px;
  line-height: 35px;
  text-align: justify;
  position: relative;
}
.top-card .desc p::before {
  content: "";
  width: 4px;
  height: 4px;
  background-color: #cbcbcb;
  border-radius: 100%;
  position: absolute;
  top: 15px;
  left: -10px;
}

.hardlist {
  background-color: #f9f9f9;
  padding: 54px 0;
  box-sizing: border-box;
}
.hardlist .listop {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.hardlist .listop .item {
  width: 24%;
  background-color: #fff;
  display: flex;
  align-items: center;
  padding: 20px 0;
}
.hardlist .listop .item .icon {
  width: 56px;
  height: 56px;
  margin: 0 10px 0 20px;
}
.hardlist .listop .item .name {
  font-size: 16px;
}

.scientific-item {
  background-color: #f9f9f9;
  padding: 54px 0;
  box-sizing: border-box;
}
.scientific-item .title {
  font-size: 30px;
  color: #010101;
  margin-bottom: 54px;
}
.scientific-item .list {
  margin-top: 68px;
  display: flex;
  flex-wrap: wrap;
}
.scientific-item .list .item {
  width: 33.3333333%;
  display: flex;
  align-items: center;
  margin-bottom: 42px;
}
.scientific-item .list .item::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: #3eaef4;
  border-radius: 2px;
  margin-right: 11px;
  transform: rotate(45deg);
}
.scientific-item .list .item .text {
  position: relative;
  font-size: 16px;
  transition: all 0.3s;
  cursor: pointer;
}
.scientific-item .list .item .text:hover {
  color: #3eaef4;
}
.scientific-item .list .item .text:hover .block-tips {
  opacity: 1;
  z-index: 10;
}
.scientific-item .list .item .block-tips {
  cursor: auto;
  transition: all 0.3s;
  opacity: 0;
  position: absolute;
  top: 38px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #fff;
  width: 452px;
  box-shadow: 0px 3px 6px 0px rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 15px;
  z-index: -10;
  font-size: 14px;
  color: #666666;
  line-height: 24px;
  text-align: justify;
  white-space: pre-line;
}
.scientific-item .list .item .block-tips::before {
  content: "";
  width: 20px;
  height: 20px;
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  background-color: #fff;
}
.scientific-item .list .item .block-tips::after {
  content: "";
  width: 100%;
  height: 20px;
  position: absolute;
  top: -20px;
  left: 0;
}
.scientific-item .list .item .block-tips.image {
  display: flex;
  height: 150px;
}
.scientific-item .list .item .block-tips.image .icon {
  width: 150px;
  height: 150px;
}
.scientific-item .list .item .block-tips.image .info {
  margin-left: 10px;
  overflow-y: auto;
  padding-right: 10px;
}
.scientific-item .list .item .block-tips.image .info::-webkit-scrollbar {
  width: 5px;
}
.scientific-item .list .item .block-tips.image .info::-webkit-scrollbar-track {
  border-radius: 10px;
  background-color: #eee;
}
.scientific-item .list .item .block-tips.image .info::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: #84c9f5;
}