/* 关于页面样式 */
.about_header {
  padding: 180px 0 80px;
  text-align: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
}

.about_header h1 {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--dark-color);
}

.about_header p {
  font-size: 20px;
  color: #636e72;
  max-width: 700px;
  margin: 0 auto;
}

.about_story {
  padding: 100px 0;
  background: white;
}

.about_story-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about_story-text h2 {
  font-size: 36px;
  margin-bottom: 20px;
  color: var(--dark-color);
}

.about_story-text p {
  margin-bottom: 20px;
  color: #636e72;
}

.about_story-image {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.about_mission {
  padding: 100px 0;
  background: var(--light-color);
  text-align: center;
}

.about_mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.about_mission-card {
  background: white;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.about_mission-card:hover {
  transform: translateY(-10px);
}

.about_mission-icon {
  font-size: 40px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.about_mission-card h3 {
  margin-bottom: 15px;
  color: var(--dark-color);
}

.about_team {
  padding: 100px 0;
  background: white;
  text-align: center;
}

.about_team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.about_team-member {
  background: var(--light-color);
  padding: 30px;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.about_team-member:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
}

.about_team-member-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 0 auto 20px;
  object-fit: cover;
}

.about_team-member-name {
  font-size: 20px;
  margin-bottom: 5px;
  color: var(--dark-color);
}

.about_team-member-role {
  color: var(--primary-color);
  margin-bottom: 15px;
}

.about_values {
  padding: 100px 0;
  background: var(--light-color);
  text-align: center;
}

.about_values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.about_values-card {
  background: white;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.about_values-icon {
  font-size: 40px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.about_values-card h3 {
  margin-bottom: 15px;
  color: var(--dark-color);
}

@media (max-width: 768px) {
  .about_story-content {
    grid-template-columns: 1fr;
  }

  .about_team-grid {
    grid-template-columns: 1fr;
  }

  .about_mission-grid {
    grid-template-columns: 1fr;
  }

  .about_values-grid {
    grid-template-columns: 1fr;
  }

  .about_header h1 {
    font-size: 36px;
  }

  .about_header p {
    font-size: 18px;
  }
}