/* 关于我们页面样式 */
.about-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  color: #333;
}

/* 英雄区域 */
.about-hero {
  background: linear-gradient(135deg, #3498db, #2c3e50);
  color: #fff;
  padding: 4rem 2rem;
  border-radius: 8px;
  margin-bottom: 3rem;
  text-align: center;
}

.about-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.about-tagline {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.about-description {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 使命部分 */
.about-mission {
  background: #f9f9f9;
  padding: 3rem;
  border-radius: 8px;
  margin-bottom: 3rem;
  text-align: center;
}

.mission-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-mission h2 {
  color: #2c3e50;
  margin-bottom: 1.5rem;
  font-size: 2rem;
}

.about-mission p {
  font-size: 1.2rem;
  line-height: 1.6;
  color: #555;
}

/* 核心价值观 */
.about-values {
  margin-bottom: 3rem;
}

.about-values h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.value-card {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.value-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.value-card h3 {
  color: #3498db;
  margin-bottom: 1rem;
}

.value-card p {
  color: #555;
  line-height: 1.6;
}

/* 我们的故事 */
.about-story {
  margin-bottom: 3rem;
}

.about-story h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

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

.story-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 120px;
  width: 2px;
  background: #3498db;
}

.timeline-item {
  position: relative;
  padding-left: 150px;
  margin-bottom: 2rem;
}

.timeline-date {
  position: absolute;
  left: 0;
  width: 100px;
  text-align: right;
  font-weight: bold;
  color: #3498db;
}

.timeline-content {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  position: relative;
}

.timeline-content::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 20px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  border: 2px solid #3498db;
  box-shadow: 0 0 0 4px #fff;
}

.timeline-content h3 {
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.timeline-content p {
  color: #555;
  line-height: 1.6;
}

/* 核心团队 */
.about-team {
  margin-bottom: 3rem;
}

.about-team h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-member {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.team-member:hover {
  transform: translateY(-5px);
}

.member-photo {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  overflow: hidden;
}

.photo-placeholder {
  width: 100%;
  height: 100%;
  background: #3498db;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: bold;
}

.team-member h3 {
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.member-title {
  color: #3498db;
  font-weight: bold;
  margin-bottom: 1rem;
}

.member-bio {
  color: #555;
  line-height: 1.6;
}

/* 合作伙伴 */
.about-partners {
  margin-bottom: 3rem;
}

.about-partners h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
}

.partner-logo {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}

.logo-placeholder {
  color: #777;
  font-weight: bold;
  text-align: center;
}

/* 联系我们 */
.about-contact {
  margin-bottom: 3rem;
}

.about-contact h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.contact-item {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
}

.contact-icon {
  font-size: 2rem;
  margin-right: 1.5rem;
  color: #3498db;
}

.contact-detail h3 {
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.contact-detail p {
  color: #555;
}

.contact-form-container {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.contact-form-container h3 {
  color: #2c3e50;
  margin-bottom: 1.5rem;
  text-align: center;
}

.contact-form {
  max-width: 800px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #555;
  font-weight: bold;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
}

.form-group textarea {
  resize: vertical;
}

.submit-button {
  background: #3498db;
  color: #fff;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.submit-button:hover {
  background: #2980b9;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .about-container {
    padding: 1rem;
  }

  .about-hero {
    padding: 3rem 1rem;
  }

  .about-mission {
    padding: 2rem;
  }

  .story-timeline::before {
    left: 20px;
  }

  .timeline-item {
    padding-left: 50px;
  }

  .timeline-date {
    position: static;
    text-align: left;
    margin-bottom: 0.5rem;
  }

  .timeline-content::before {
    left: -40px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}