body {
    background-color: #f8f9fa;
    color: #212529;
  }

  .card {
    background-color: #ffffff;
    border-color: #dee2e6;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  }

  .card-body {
    color: #212529;
  }

  .form-control,
  .form-select {
    background-color: #f8f9fa;
    border-color: #ced4da;
    color: #212529;
  }

  .form-control:focus,
  .form-select:focus {
    background-color: #fff;
    color: #212529;
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
  }

  .form-text {
    color: #6c757d !important;
  }

  .instruction-step {
    background-color: #f8f9fa;
    border-left: 4px solid #0d6efd;
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 8px;
  }

  .alert-info {
    background-color: #cff4fc;
    border-color: #b6effb;
    color: #055160;
  }

  .alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
  }

  .alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
  }

  .alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
  }

  .video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }

  .video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
  }

  .step-number {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background-color: #0d6efd;
    color: white;
    border-radius: 50%;
    margin-right: 10px;
  }

  .instruction-img {
    max-width: 100%;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .wuxia-header {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/logoTS.png') no-repeat center center;
    background-size: cover;
    color: white;
    padding: 80px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }

  .feature-icon {
    font-size: 2.5rem;
    color: #0d6efd;
    margin-bottom: 15px;
  }

  footer {
    background-color: #212529;
    color: #f8f9fa;
    border-top: 1px solid #dee2e6;
  }

  footer a {
    color: #f8f9fa;
  }

  .section-title {
    color: #212529;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
  }

  .section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #0d6efd, #6ea8fe);
  }

  .card-header {
    border-bottom: 1px solid #dee2e6;
  }

  .border-primary,
  .border-success,
  .border-info {
    border-color: #dee2e6 !important;
  }

  .contact-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  .btn-outline-primary {
    border-color: #0d6efd;
    color: #0d6efd;
  }

  .btn-outline-primary:hover {
    background-color: #0d6efd;
    color: white;
  }

  .btn-outline-info {
    border-color: #0dcaf0;
    color: #0dcaf0;
  }

  .btn-outline-info:hover {
    background-color: #0dcaf0;
    color: white;
  }

  a.text-info {
    color: #0dcaf0 !important;
  }

  .input-group-text {
    background-color: #f8f9fa;
    border-color: #ced4da;
    color: #212529;
  }

  .badge {
    font-weight: 500;
  }

  .spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s;
  }

  .spinner-overlay.active {
    visibility: visible;
    opacity: 1;
  }

  .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #0d6efd;
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }

  @keyframes spin {
    0% {
      transform: rotate(0deg);
    }

    100% {
      transform: rotate(360deg);
    }
  }

  pre.script-code {
    background-color: #282c34;
    color: #abb2bf;
    border-radius: 8px;
    padding: 15px;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    line-height: 1.5;
    max-height: 300px;
  }

  .script-container {
    position: relative;
  }