.title {
  position: relative;
  width: 100%;
  height: 6.25rem;
  line-height: 6.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.625rem;
  color: #FFFFFF;
  background: #1A62EE;
  text-align: left;
  font-style: normal;

}

.title img {
  width: 1.5rem;
  height: 1.5rem;
  position: absolute;
  left: 2%;
  padding: .625rem;
  cursor: pointer;
}

.about {

  margin: 1.0625rem auto;

}

.top-div {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  row-gap: 0;
  column-gap: 0;
}

.top-div-item {
  position: relative;
  display: inline-block;
  width: 195px;
  height: 135px;
  border-radius: 28px 28px 28px 28px;
  margin: auto;
  margin-top: 40px;
}

.top-div-item-img {
  transition: filter 0.3s ease;
  /* 平滑过渡效果 */
  width: 195px;
  height: 135px;
  object-fit: cover;
  border-radius: 28px 28px 28px 28px;
}

.top-div-item-text {
  width: 195px;
  height: 135px;
  border-radius: 28px 28px 28px 28px;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: end;
  justify-content: center;
  font-weight: bold;
  font-size: 16px;
  color: white;
  padding-bottom: 30px;
  background-color: rgba(0, 0, 0, 0.5);
  box-sizing: border-box;
  /* 半透明背景 */
  opacity: 0;
  /* 文本默认不显示 */
  transition: opacity 0.3s ease;
  /* 平滑过渡效果 */
}

.top-div-item:hover .top-div-item-img {
  filter: grayscale(50%);
  /* 应用灰度滤镜 */
  border-radius: 28px 28px 28px 28px;
}

.top-div-item:hover .top-div-item-text {
  opacity: 1;
  /* 鼠标悬停时显示文本 */
}

@media only screen and (max-width:678px) {
  .top-div {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 0;
    column-gap: 0;
  }

  .top-div-item {
    zoom: 0.7;
  }
}

.content {
  flex: 1;
  padding-top: 16px;
  font-weight: 400;
  font-size: 14px;
  color: #B4BFBA;
  line-height: 26px;
  text-align: left;
  font-style: normal;
}

.span {
  margin-bottom: 20px;
}

.content-title {
  margin-top: 40px;
}