body {
    font-family: "Microsoft YaHei", sans-serif;
    margin: 0;
    background: #f8f9fa;
    color: #444;
    line-height: 1.6;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 25px;
  }
  
  .site-header {
    background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%);
    padding: 22px 0;
    color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  }
  
  .site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    font-size: 30px;
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.5px;
  }
  
  .site-nav {
    margin-top: 0;
    display: flex;
    flex-wrap: wrap;
  }
  
  .main-content {
    display: flex;
    flex-direction: column;
    padding: 30px 0;
  }
  
  .main-content h2 {
    font-size: 28px;
    color: #0078d4;
    margin-bottom: 15px;
    padding-left: 15px;
    border-left: 4px solid #0078d4;
  }
  
  .main-content > p {
    margin-top: 0;
    margin-bottom: 30px;
    padding-left: 19px;
    color: #666;
  }
  
  .main-content .card {
    margin-bottom: 25px;
    background-color: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
  }
  
  .main-content .card:hover {
    transform: translateY(-5px);
  }
  
  .main-content .card h3 {
    color: #0078d4;
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 22px;
  }
  
  .main-content .card p {
    color: #555;
    margin-bottom: 20px;
  }
  
  .site-footer {
    background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%);
    color: rgba(255, 255, 255, 0.95);
    text-align: center;
    padding: 25px 0;
    font-size: 15px;
    letter-spacing: 0.3px;
    margin-top: 30px;
  }