body {
      font-family: Arial, sans-serif;
      background: #f7f9fc;
      margin: 0;
      padding: 0;
      line-height: 1.6;
      color: #222;
    }
    header {
      background: #003366;
      color: #fff;
      padding: 20px;
      text-align: center;
    }
    header h1 {
      margin: 0;
      font-size: 22px;
    }
    .container {
      width: 95%;
      max-width: 460px;
      margin: 20px auto;
      background: #fff;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    }
    h2 {
      color: #003366;
      margin-top: 30px;
    }
    h3 {
      color: #006699;
      margin-top: 20px;
    }
    p {
      margin: 12px 0;
    }
    ul {
      margin: 10px 0 20px 20px;
    }
    .highlight {
      background: #e6f3ff;
      border-left: 4px solid #006699;
      padding: 10px 15px;
      margin: 15px 0;
      font-weight: bold;
    }
    footer {
      text-align: center;
      padding: 20px;
      font-size: 14px;
      color: #555;
    }