body {
      font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
      background-color: #f2f2f2;
      margin: 0;
      padding: 0;
      color: #333;
    }
    .banner {
      background: #0070ba;
      color: #fff;
      padding: 10px 20px;
      text-align: center;
      font-size: 14px;
    }
    .container {
      max-width: 600px;
      margin: 40px auto;
      background: #fff;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 0 12px rgba(0, 0, 0, 0.08);
      text-align: center;
    }
    img.logo, .paypal-gif {
      height: 40px;
      margin-bottom: 20px;
    }
    .paypal-gif {
      width: 60px;
      height: auto;
      display: block;
      margin: 20px auto;
    }
    .loader, .loader-small {
      border: 6px solid #eee;
      border-top: 6px solid #0070ba;
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin: 20px auto;
    }
    .loader { width: 60px; height: 60px; }
    .loader-small { width: 40px; height: 40px; }
    @keyframes spin { to { transform: rotate(360deg); } }
    h2 { color: #003087; font-size: 20px; margin-top: 10px; }
    .success { font-size: 48px; color: green; margin: 20px 0; }
    .btn {
      background: #0070ba;
      color: #fff;
      border: none;
      padding: 12px 24px;
      font-size: 16px;
      border-radius: 5px;
      cursor: pointer;
      margin-top: 20px;
    }
    input, textarea {
      width: 100%;
      padding: 10px;
      margin: 10px 0;
      border: 1px solid #ccc;
      border-radius: 5px;
      font-size: 15px;
    }
    .hidden { display: none; }
    .highlight { color: #d93025; font-weight: bold; }
    .step { display: flex; align-items: center; margin: 20px 0; }
    .circle {
      width: 24px; height: 24px; border-radius: 50%;
      background: #ccc; display: flex;
      align-items: center; justify-content: center;
      color: #fff; margin-right: 10px;
    }
    .circle.active { background: #0070ba; }
    .status-msg { font-size: 16px; margin-top: 20px; }
    #ipScanOutput {
      background: #111;
      color: #0f0;
      font-family: monospace;
      font-size: 13px;
      height: 250px;
      overflow-y: auto;
      padding: 15px;
      border-radius: 8px;
      box-shadow: inset 0 0 6px #000;
      margin-top: 15px;
    }
    #fixComplete {
      background: #e6f4ea;
      color: #1e4620;
      border: 1px solid #badbcc;
      padding: 15px;
      margin-top: 20px;
      border-radius: 5px;
      text-align: center;
      display: none;
    }
    footer {
      margin-top: 40px;
      padding: 20px;
      background: #fff;
      text-align: center;
      font-size: 12px;
      color: #777;
      border-top: 1px solid #ddd;
    }
    footer a {
      color: #0070ba;
      text-decoration: none;
      margin: 0 10px;
      cursor: pointer;
    }