/* about.css - 作者介绍页面样式 */
.about-container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
  }
  
  .about-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
  }
  
  .author-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin: 0 auto 1.5rem;
  }
  
  .author-name {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
  }
  
  .author-tagline {
    font-size: 1.2rem;
    color: #7f8c8d;
    font-weight: 300;
    margin-bottom: 1rem;
  }
  
  .social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 1.5rem;
  }
  
  .social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: #f8f9fa;
    color: #2c3e50;
    border-radius: 50%;
    transition: all 0.3s ease;
  }
  
  .social-links a:hover {
    background: #3498db;
    color: white;
    transform: translateY(-3px);
  }
  
  .about-section {
    margin-bottom: 3rem;
    padding: 2rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  }
  
  .section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
    color: #2c3e50;
  }
  
  .skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
  }
  
  .skill-item {
    margin-bottom: 1rem;
  }
  
  .skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
  }
  
  .skill-bar {
    height: 10px;
    background: #ecf0f1;
    border-radius: 10px;
    overflow: hidden;
  }
  
  .skill-progress {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2980b9);
    border-radius: 10px;
    transition: width 1s ease-in-out;
  }
  
  .timeline {
    position: relative;
    padding-left: 3rem;
  }
  
  .timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    height: 100%;
    width: 2px;
    background: #3498db;
  }
  
  .timeline-item {
    position: relative;
    margin-bottom: 2rem;
  }
  
  .timeline-item::before {
    content: '';
    position: absolute;
    left: -3rem;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #3498db;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #3498db;
  }
  
  .timeline-date {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 0.5rem;
  }
  
  .timeline-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
  }
  
  .timeline-desc {
    color: #555;
    line-height: 1.6;
  }
  
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
  }
  
  .project-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #eee;
  }
  
  .project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  }
  
  .project-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
  }
  
  .project-content {
    padding: 1.5rem;
  }
  
  .project-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
  }
  
  .project-desc {
    color: #555;
    margin-bottom: 1rem;
    line-height: 1.5;
  }
  
  .project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1rem;
  }
  
  .project-tag {
    padding: 4px 10px;
    background: #f1f8ff;
    color: #3498db;
    border-radius: 20px;
    font-size: 0.8rem;
  }
  
  .project-link {
    display: inline-block;
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
  }
  
  .project-link:hover {
    color: #2980b9;
  }
  
  @media (max-width: 768px) {
    .author-name {
      font-size: 2rem;
    }
    
    .skills-container,
    .projects-grid {
      grid-template-columns: 1fr;
    }
    
    .timeline {
      padding-left: 2rem;
    }
    
    .timeline-item::before {
      left: -2.2rem;
    }
  }