.list_1 {
  max-width: 1200px;
  width: 90%;
  /* margin: 100px auto 150px; */
  margin: 20px auto 150px;
}
.list_1 .f40 {
  width: 100%;
  padding: 30px 0;
  border-bottom: 1px solid #ccc;
  text-align: center;
  font-size: 40px;
  margin-bottom: 50px;
  font-family: 'AtAeroMedium';
}
.list_1 .box {
  width: 100%;
  min-height: 100vh;
  display: flex;
  justify-content: space-between;
  position: relative;
  grid-column-gap: 2%;
}
.list_1 .box .list {
  position: sticky;
  top: 100px;
  left: 0;
  height: fit-content;
  display: flex;
  flex-direction: column;
}
.list_1 .box .list .item {
  font-size: 16px;
  padding-left: 15px;
  padding: 5px 0 5px 15px;
  border-left: 2px solid #ddd;
  cursor: pointer;
  color: #666;
  /* font-family: 'Medium'; */
}
.list_1 .box .list .item.art {
  border-left: 2px solid #000;
  color: #000;
}
.list_1 .box .text {
  width: 860px;
  display: none;
}
.list_1 .box .text h2 {
  font-family: 'AtAeroMedium';
}
.list_1 .box .text .f30 {
  font-size: 30px;
  margin-bottom: 20px;
  scroll-margin-top: 100px; /* 适用于 Chrome 和 Firefox，定义滚动时的偏移量 */
}
.list_1 .box .text p {
  font-size: 16px;
  color: #151515;
  margin-bottom: 15px;
  font-family: 'Regular';
}
.list_1 .box .text.art {
  display: block;
}


@media screen and (max-width: 768px) {
  .list_1{
    width: 90%;
  }
  .list_1 .box .list{
    display: none;
  }
}