/* 页面头部样式 */
.about-header {
  background-image: url("../img/about/banner.jpg");
  height: 40vh;
  margin-top: 0;
  background-position: center 30%;
}

.about-content {
  padding: 0;
}

.about-section {
  padding: 80px 0;
}

.about-section h2 {
  margin-bottom: 30px;
  font-size: 2rem;
  font-weight: 500;
}

.section-heading {
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 30px;
  color: #333;
  position: relative;
}

.text-center h2 {
  margin-bottom: 30px;
  font-size: 2rem;
  font-weight: 500;
}

.about-section p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #666;
  margin-bottom: 1.5rem;
}

.about-image {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
}

.milestone-section {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* 时间线样式 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 3rem auto;
}

.timeline-item {
  margin-bottom: 2rem;
  position: relative;
  padding-left: 2rem;
}

.timeline-year {
  font-weight: 600;
  color: #007bff;
  margin-bottom: 0.5rem;
}

.timeline-content {
  color: #666;
  font-size: 1.1rem;
  line-height: 1.6;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #007bff;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #e9ecef;
}

.milestone-image {
  max-height: 600px;
  object-fit: cover;
  width: auto;
  margin: 0 auto;
  display: block;
}

.bg-light {
  background-color: #f8f9fa;
}

/* 统计数据样式 */
.stats-container {
  display: flex;
  justify-content: space-between;
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  flex: 1;
  margin: 0 10px;
  min-width: 120px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: #007bff;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: #666;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .stats-container {
    flex-direction: column;
  }

  .stat-item {
    margin: 10px 0;
  }
}