.main-box {
  padding-bottom: 100px;
}
.header-img img {
  width: 100%;
}
.dfw {
  width: 1200px;
  margin: 0 auto;
}

/* 额外内容 */
.row-1 {
  margin-top: 40px;
}
.row-1-title:hover {
  color: #c30;
  text-decoration: underline;
}
.row-2 {
  margin-top: 60px;
  position: relative;
}
.r2-logo {
  width: 100%;
}
.r2-arrow {
  position: absolute;
  right: 40px;
  top: 60px;
  cursor: pointer;
}
.list-box {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 40px;
  margin-top: 40px;
}
.list-left {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  height: 240px;
  grid-gap: 20px;
}
.list-img {
  width: 100%;
  height: 210px;
}
.list-img-text {
  height: 30px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 14px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  text-align: center;
  line-height: 30px;
  font-family: simsun;
}
.list-img-text:hover {
  color: #fff;
  text-decoration: underline;
}
.list-item {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 16px;
  font-family: simsun;
  height: 40px;
  line-height: 40px;
}
.list-right {
  min-width: 0;
}
.list-title {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.list-title:hover {
  color: #c30;
  text-decoration: underline;
}