.about-intro {
  background: var(--bg-white);
}

.intro-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-text h2 {
  font-size: 32px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.intro-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.intro-image {
  background: linear-gradient(135deg, #f0f7ff, #e8f4f8);
  border-radius: var(--radius-lg);
  padding: 40px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  position: relative;
  overflow: hidden;
}

.intro-image::before {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: rgba(26,115,232,0.06);
  top: -60px;
  right: -60px;
}

.intro-image::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(0,180,216,0.06);
  bottom: -40px;
  left: -40px;
}

.mission-section {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 80px 0;
  color: #fff;
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.mission-item .icon {
  font-size: 48px;
  margin-bottom: 20px;
  display: block;
}

.mission-item h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.mission-item p {
  font-size: 14px;
  opacity: 0.85;
  line-height: 1.7;
}

.timeline-section {
  background: var(--bg-light);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 40px;
  position: relative;
}

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

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-light);
  box-shadow: 0 0 0 3px var(--primary);
  z-index: 1;
  top: 4px;
}

.timeline-content {
  width: calc(50% - 40px);
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.timeline-year {
  display: inline-block;
  padding: 2px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-content h4 {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.team-section {
  background: var(--bg-white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.team-card {
  text-align: center;
  padding: 32px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 28px;
  font-weight: 600;
}

.team-card h4 {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.team-card .title {
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 8px;
}

.team-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .intro-content {
    grid-template-columns: 1fr;
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .mission-grid {
    grid-template-columns: 1fr;
  }
  .timeline::before {
    left: 20px;
  }
  .timeline-item,
  .timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-left: 50px;
  }
  .timeline-dot {
    left: 20px;
  }
  .timeline-content {
    width: 100%;
  }
  .team-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }
}