/* 主要部分 */
.main-content {
  margin-top: 10.3rem;
  padding: 10.3rem 10rem 11.1rem 10rem;
}
.content-title {
  font-size: 5.2rem;
  line-height: 5.6rem;
  text-align: center;
  font-family: "SourceHanSansCN-Bold";
  font-weight: normal;
  color: var(--font-color-2);
}
.search-container {
  margin-top: 3.8rem;
  width: 100%;
  padding: 1.3rem 3.7rem;
  background-color: var(--white-primary);
  border-radius: 10rem;
  display: flex;
  align-items: center;
}
.search-icon {
  width: 2.8rem;
  height: 2.8rem;
  margin-right: 1.1rem;
  display: flex;
}
.search-icon > svg,
.clear-btn > svg {
  width: 100%;
  height: 100%;
  margin: auto;
}
.search-input {
  flex: 1;
  font-size: 2rem;
  line-height: 2.8rem;
  color: var(--font-color-2);
}
.clear-btn {
  display: none;
  width: 1.9rem;
  height: 1.9rem;
  cursor: pointer;
}
.search-container:hover .clear-btn,
.search-input:focus + .clear-btn {
  display: flex;
}

/* 列表 */
.section-container {
  margin-top: 5.1rem;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 2rem;
}
.section-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8.3rem 0;
  border-radius: 2.4rem;
  background-color: var(--white-primary);
  transition: box-shadow 0.5s;
}
.section-item:hover { 
  box-shadow: 2px 3px 8px 0px #E3E3E38A, 10px 11px 15px 0px #E3E3E378,
  22px 25px 20px 0px #E3E3E347,39px 45px 24px 0px #E3E3E314,
  61px 70px 26px 0px #E3E3E303;
}
.item-icon {
  width: 7.5rem;
  height: 7.5rem;
}
.item-icon > img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.section-item h4 {
  text-align: center;
  margin-top: 2.5rem;
  font-size: 2.6rem;
  line-height: 3.4rem;
  font-family: "SourceHanSansCN-Bold";
  font-weight: normal;
  color: var(--font-color-2);
}

/* 搜索相关 */
.section-hidden {
  max-height: 0;
  overflow: hidden;
}
.result-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 4rem;
}
.result-item {
  padding: 5.5rem;
  background-color: var(--white-primary);
  border-radius: 2.4rem;
  transition: box-shadow 0.5s;
}
.result-item h4 {
  font-size: 2.6rem;
  line-height: 3.4rem;
  color: var(--font-color-2);
  /* 最多2行 */
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  white-space: normal;
}
.result-item p {
  margin-top: 2.8rem;
  font-size: 1.6rem;
  line-height: 2.8rem;
  color: var(--font-color-3);
  /* 最多4行 */
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  white-space: normal;
}
.result-item:hover {
  box-shadow: 2px 3px 8px 0px #E3E3E38A, 10px 11px 15px 0px #E3E3E378,
  22px 25px 20px 0px #E3E3E347,39px 45px 24px 0px #E3E3E314,
  61px 70px 26px 0px #E3E3E303;
}

@media screen and (max-width: 1280px) {
  .main-content {
    margin-top: 0;
  }
}

@media screen and (max-width: 767px) {
  .main-content {
    padding: 30px 20px;
  }
  .content-title {
    font-size: 40px;
    line-height: 50px;
  }
  .search-container {
    margin-top: 30px;
    width: 100%;
    padding: 10px 20px;
  }
  .search-icon {
    width: 20px;
    height: 20px;
    margin-right: 10px;
  }
  .clear-btn {
    width: 16px;
    height: 16px;
  }
  .search-input {
    font-size: 16px;
    line-height: 24px;
  }
  .section-container {
    margin-top: 30px;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 10px;
  }
  .section-item {
    padding: 30px 10px;
    border-radius: 20px;
  }
  .item-icon {
    width: 40px;
    height: 40px;
  }
  .section-item h4 {
    margin-top: 20px;
    font-size: 20px;
    line-height: 30px;
  }

  /* 搜索结果 */
  .result-container {
    grid-template-columns: 1fr;
    grid-gap: 16px;
  }
  .result-item {
    padding: 20px;
    border-radius: 20px;
  }
  .result-item h4 {
    font-size: 20px;
    line-height: 30px;
    text-align: center;
  }
  .result-item p {
    margin-top: 20px;
    font-size: 16px;
    line-height: 25px;
  }
}