body {
      background-color: #f5f5f5;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      padding-bottom: 60px;
    }
    .card {
      box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
      border-radius: 0.75rem;
      margin-top: 2rem;
    }
    .card-header {
      background: linear-gradient(45deg, #0d6efd, #0dcaf0);
      color: white;
      border-radius: 0.75rem 0.75rem 0 0 !important;
    }
    .security-notice {
      background-color: #d1ecf1;
      color: #0c5460;
      padding: 10px;
      border-radius: 5px;
      margin-bottom: 20px;
      border-left: 4px solid #0dcaf0;
    }
    .steps-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      margin: 30px 0;
    }
    .step {
      display: flex;
      flex-direction: column;
      align-items: center;
      z-index: 2;
    }
    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background-color: #6c757d;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin-bottom: 5px;
    }
    .step.active .step-number {
      background-color: #0d6efd;
    }
    .step-line {
      height: 3px;
      background-color: #6c757d;
      flex-grow: 1;
      margin: 0 10px;
    }
    .step-line.active {
      background-color: #0d6efd;
    }
    .step-label {
      font-size: 14px;
      color: #6c757d;
    }
    .step.active .step-label {
      color: #0d6efd;
      font-weight: bold;
    }
    .qrcode-container {
      padding: 20px;
      background-color: white;
      border-radius: 10px;
      display: inline-block;
      box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
      min-height: 200px;
      min-width: 200px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .login-status {
      text-align: center;
      margin-bottom: 20px;
      font-weight: bold;
    }
    .footer-info {
      text-align: center;
      margin-top: 30px;
      padding: 20px;
      background-color: #f8f9fa;
      border-top: 1px solid #dee2e6;
    }
    .footer-links {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 10px;
    }
    .footer-link {
      display: flex;
      align-items: center;
      color: #6c757d;
      text-decoration: none;
    }
    .footer-link img {
      margin-right: 5px;
      height: 16px;
    }
    .query-result {
      min-height: 50px;
      padding: 10px;
      border-radius: 5px;
      background-color: #f8f9fa;
      border: 1px solid #dee2e6;
    }
    .btn {
      transition: all 0.3s;
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    }
    #qrimg {
      font-size: 100px;
      color: #0d6efd;
    }
    .link-result {
      word-break: break-all;
      padding: 10px;
      background: #f8f9fa;
      border-radius: 5px;
      margin-top: 10px;
    }
    
    /* 自定义按钮颜色 */
    .btn-zjb {
      background-color: #0d6efd;
      border-color: #0d6efd;
      color: white;
    }
    .btn-hyjf {
      background-color: #20c997;
      border-color: #20c997;
      color: white;
    }
    .btn-dyjf {
      background-color: #fd7e14;
      border-color: #fd7e14;
      color: white;
    }
    
    /* 登录方式选择按钮 */
    .login-method-btn {
      padding: 20px;
      font-size: 18px;
      border-radius: 12px;
      margin: 10px 0;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 80px;
    }
    .btn-qq {
      background-color: #12b7f5;
      border-color: #12b7f5;
      color: white;
    }
    .btn-wx {
      background-color: #07c160;
      border-color: #07c160;
      color: white;
    }