/* About 专属样式 */
.about-hero {
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('AI生成图片/080bb959b036f333a20a84c84824d148.jpeg') center/cover;
  color: white;
  text-align: center;
  padding: 120px 20px;
}

.about-hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.about-hero p {
  font-size: 1.3rem;
  max-width: 800px;
  margin: 0 auto;
}

.mission-vision {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 5rem 0;
  background: white;
}

.mv-card {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  text-align: center;
  border-left: 5px solid #00b4d8;
}

.mv-card h3 {
  font-size: 1.6rem;
  color: #0d1b2a;
  margin-bottom: 1rem;
}

.timeline {
  max-width: 800px;
  margin: 5rem auto;
  position: relative;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background: #00b4d8;
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  margin-bottom: 3rem;
  position: relative;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-year {
  flex: 1;
  text-align: center;
  font-size: 1.4rem;
  font-weight: bold;
  color: #00b4d8;
}

.timeline-content {
  flex: 2;
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  position: relative;
}

.timeline-content::after {
  content: '';
  position: absolute;
  top: 20px;
  width: 20px;
  height: 20px;
  background: #00b4d8;
  border-radius: 50%;
  transform: translateY(-50%);
}

.timeline-item:nth-child(even) .timeline-content::after {
  right: -10px;
}

.timeline-item:nth-child(odd) .timeline-content::after {
  left: -10px;
}

.team {
  padding: 5rem 0;
  background: #f0f4f8;
  text-align: center;
}

.team .container {
  max-width: 900px;
}

.team h2 {
  margin-bottom: 1.5rem;
}

.team p {
  line-height: 1.8;
  color: #333;
  font-size: 1.1rem;
}