.scc-key-milestones {
  max-width: 120rem;
  margin: 0 auto;
  padding: 8rem 0 9.6rem;
}

.scc-key-milestones .scc-milestones-title {
  font-family: Exo, sens-serif;
  font-weight: 600;
  font-size: 3.2rem;
  line-height: 3.2rem;
  color: #323232;
  margin-bottom: 4.2rem;
}

.scc-key-milestones .key-milestones-year {
  font-family: Exo, sens-serif;
  font-weight: 600;
  font-size: 9.6rem;
  line-height: 9.6rem;
  color: #34c8e5;
  margin-bottom: 3rem;
}

.scc-key-milestones .key-milestones-title {
  font-family: Exo, sens-serif;
  font-weight: 600;
  font-size: 2.8rem;
  color: #333;
  margin: 0 0 2.2rem;
}

.scc-key-milestones .key-milestones-spec {
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 2.4rem;
  color: #323232;
  margin: 0;
}

.scc-key-milestones .scc-key-milestones-container {
  display: flex;
  gap: 2.4rem;
  margin-bottom: 2.7rem;
}

.scc-key-milestones .scc-key-milestones-container .scc-key-milestones-right {
  width: 58.4rem;
  height: 36.2rem;
  border-radius: 0.8rem;
}

.scc-key-milestones .scc-key-milestones-container .scc-key-milestones-left {
  flex: 1;
}

.scc-key-milestones
  .scc-key-milestones-container
  .scc-key-milestones-right
  img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0.8rem;
}

.year-timeline {
  width: 100%;
  padding-top: 20px;
}

/* 灰色横线 */
.timeline-line {
  position: relative;
  height: 0.1rem;
  background-color: #d3d3d3;
  margin-bottom: 3.5rem;
}

/* 蓝色高亮块 */
.active-bar {
  position: absolute;
  left: 0;
  top: -0.7rem;
  width: 8.2rem;
  height: 1.7rem;
  background-color: #35c6df;
  border-radius: 0.2rem;
}

/* 年份列表 */
.year-list {
  display: flex;
  justify-content: space-between;
  padding: 0;
  margin: 0;
  list-style: none;
}

.year-list li {
  font-size: 2.8rem;
  font-weight: 600;
  font-family: Exo, sens-serif;
  color: #333;
  cursor: pointer;
  position: relative;
}

/* 选中年份 */
.year-list li.active {
  color: #000;
}

@media screen and (width <= 768px) {
  .scc-key-milestones {
    width: 100%;
    padding: 8.7rem 1.6rem 6.6rem;
  }

  .scc-key-milestones .scc-key-milestones-container {
    flex-direction: column;
  }

  .scc-key-milestones .scc-key-milestones-container .scc-key-milestones-right {
    width: 100%;
  }

  .year-list {
    overflow-x: auto;
    gap: 3.7rem;
  }

  /* 蓝色高亮块 */
  .active-bar {
    width: 6.8rem;
  }
}