body { padding-top: 56px; }
.left-aligned { margin-left: auto; }
.bg-dark { background-color: #343a40 !important; }
.bg-hero { background-color: #45b06cff; }

/* CALLOUT */
.bd-callout { padding:1.25rem; margin-top:1.25rem; margin-bottom:1.25rem; border:1px solid #e9ecef; border-left-width:.25rem; border-radius:.25rem }
.bd-callout h4 { margin-bottom:.25rem }
.bd-callout p:last-child { margin-bottom:0 }
.bd-callout code { border-radius:.25rem }
.bd-callout+.bd-callout { margin-top:-.25rem }
.bd-callout-info { border-left-color:#5bc0de }
.bd-callout-warning { border-left-color:#f0ad4e }
.bd-callout-danger { border-left-color:#d9534f }

/* footer */
/* Footer 基本样式 */
#footer {
    background-color: #f9f9f9;
    color: #333;
    padding: 40px 20px;
    border-top: 1px solid #ddd;
    font-family: Arial, sans-serif;
  }
  
  .footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .footer-section {
    flex: 1;
    min-width: 200px;
    margin: 20px;
  }
  
  .footer-section h3 {
    font-size: 18px;
    color: #0073e6;
    margin-bottom: 10px;
  }
  
  .footer-section ul li {
    margin-bottom: 8px;
  }
  
  .footer-section ul li a {
    font-size: 14px;
    color: #333;
    transition: color 0.3s;
  }
  
  .footer-section ul li a:hover {
    color: #0073e6;
  }
  
  /* Logo 样式 */
  .footer-logos {
    text-align: center;
    margin: 20px 0;
  }
  
  .footer-logos img {
    max-width: 100px;
    margin: 0 15px;
  }
  
  /* 奖项样式 */
  .footer-awards {
    text-align: center;
    font-size: 16px;
    color: #555;
  }
  
  .footer-awards img {
    max-width: 80px;
    margin: 10px;
  }
  
  /* 联系信息样式 */
  .footer-contact {
    text-align: center;
    font-size: 14px;
    color: #333;
    margin-top: 20px;
  }
  
  .footer-contact img.prometheus-logo {
    vertical-align: middle;
    max-height: 24px;
  }
  
  /* 版权声明 */
  .footer-copyright {
    text-align: center;
    font-size: 14px;
    color: #666;
    margin-top: 20px;
  }
  
  .footer-copyright a {
    text-decoration: none;
    color: #0073e6;
  }
  
  .footer-copyright a:hover {
    text-decoration: underline;
  }
  
  /* 响应式设计 */
  @media (max-width: 768px) {
    .footer-container {
      flex-direction: column;
      align-items: center;
    }
  
    .footer-section {
      margin: 10px 0;
    }
  
    .footer-logos img {
      max-width: 80px;
    }
  
    .footer-awards img {
      max-width: 60px;
    }
  
    .footer-contact img.prometheus-logo {
      max-height: 20px;
    }
  }