body {
      font-family: 'Segoe UI', sans-serif;
      margin: 0;
      padding: 0;
      background: #f4f4f4;
      color: #333;
    }
    .container {
      max-width: 900px;
      margin: auto;
      padding: 2rem;
      background: #fff;
      box-shadow: 0 0 10px rgba(0,0,0,0.1);
    }
    h1, h2 {
      color: #2c3e50;
    }
    ul {
      padding-left: 1.2rem;
    }
    li {
      margin-bottom: 0.5rem;
    }
    @media (max-width: 600px) {
      .container {
        padding: 1rem;
      }
    }