.about-hero {
  padding: 70px 0 85px;
  text-align: center;
  background: linear-gradient(180deg, rgba(239,246,255,1) 0%,rgba(255,255,255,1) 100%);
}

.about-hero h1 {
  color: var(--ink);
  font-size: 48px;
  font-weight: 900;
}

.about-hero p {
  width: 880px;
  margin: 30px auto 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 33px;
}

.mission-section {
  padding: 96px 0;
  background-color: rgba(248,250,252,1);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.mission-card {
  position: relative;
  height: 270px;
  overflow: hidden;
  padding: 48px;
  border-radius: 24px;
  color: var(--white);
}

.mission-card::after {
  position: absolute;
  right: -44px;
  bottom: -56px;
  width: 180px;
  height: 180px;
  border: 18px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  content: "";
}

.mission-blue {
  background: var(--blue);
}

.mission-dark {
  background: #071123;
}

.mission-card h2 {
  font-size: 30px;
  line-height: 30px;
  font-weight: 900;
}

.mission-card p {
  margin-top: 30px;
  font-size: 18px;
  line-height: 29px;
  color: #DBEAFE;
}

.mission-card div {
  display: flex;
  gap: 24px;
  margin-top: 36px;
  font-size: 16px;
  font-weight: 600;
}

.mission-card .line {
  font-weight: 500;
  /* 透明 */
  color: rgba(255, 255, 255, 0.2);
}

.mission-card div svg {
  width: 16px;
  height: 16px;
  margin-right: 8px;
  transform: translateY(2px);
}

.timeline-section {
  padding: 95px;
  background: var(--white);
}

.section-head h2 {
  font-size: 30px;
  line-height: 30px;
  font-weight: 700;
}

.timeline {
  position: relative;
  width: 1280px;
  margin: 54px auto 0;
}

.timeline-item {
  position: relative;
  width: 580px;
}

.timeline-item::after {
  content: "";
  position: absolute;
  top: 46px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #CBD5E1;
}

.timeline-item.left {
  margin-right: auto;
  text-align: right;
}

.timeline-item.active::after {
  background: var(--blue);
}

.timeline-item.right {
  margin-left: auto;
  text-align: left;
}

.timeline-item.left::after {
  right: -67px;
}

.timeline-item.right::after {
  left: -67px;
}

.timeline-item time {
  color: var(--blue);
  font-size: 24px;
  font-weight: 700;
}

.timeline-item h3 {
  margin-top: 8px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
}

.timeline-item p {
  margin-top: 13px;
  color: var(--muted);
  font-size: 16px;
  line-height: 24px;
}

.advantage-section {
  padding: 95px;
  background: var(--soft);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 65px;
}

.advantage-grid .icon {
  width: 48px;
  height: 48px;
}

.advantage-grid article {
  height: 246px;
  padding: 42px;
  border-radius: 16px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.advantage-grid h3 {
  margin-top: 24px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  text-align: center;
}

.advantage-grid p {
  margin-top: 20px;
  color: var(--muted);
  font-size: 16px;
  line-height: 24px;
  text-align: center;
}