/* Prevent printing */
    @media print {
      html, body {
        display: none;
      }
    }

    body {
      font-family: 'Poppins', sans-serif;
      font-size: 1rem;
      line-height: 1.7;
      color: #222;
      background-color: #fff;
      margin: 0;
      padding: 0;
    }

    main {
      max-width: 900px;
      margin: auto;
      padding: 1rem;
    }

    h1, h2, h3 {
      font-weight: 600;
      color: #1a1a1a;
    }

    h1 {
      font-size: 1.8rem;
      text-align: center;
      color: #007acc;
      margin-top: 2rem;
      border: 1px solid grey;
      padding: 2px;
      background-color: #ecebeb;
    }

    h2 {
      font-size: 1.4rem;
      border-left: 4px solid #4CAF50;
      padding-left: 0.6rem;
      background-color: #4CAF50;
      color: white;
      padding-top: 5px;
      padding-bottom: 5px;
      margin-top: 50px;
    }

    ul {
      padding-left: 1.5rem;
      margin-top: 1rem;
      margin-bottom: 1rem;
      list-style: none;
    }

    ul li {
      margin-bottom: 0.5rem;
    }

    ul li a {
      text-decoration: none;
      color: #007acc;
      font-weight: 500;
      display: inline-block;
      padding: 5px 0;
      transition: color 0.3s;
    }

    ul li a:hover {
      color: #005999;
      text-decoration: underline;
    }

    /* Hero Section */
    .learn-english-index {
      background: url('https://i.ibb.co/BH3jRdqB/Apcenglish-home02.jpg') center/cover no-repeat;
      color: white;
      text-shadow: 0 0 10px black;
      padding: 100px 20px;
      text-align: center;
    }

    .learn-english-index h1 {
      font-size: 1.8rem;
      margin-top: 2rem;
      margin-bottom: 2rem;
      border: none;
      color: white;
      background: transparent;
    }

    .learn-english-index p {
      background-color: #222;
      padding: 6px;
      border-radius: 5px;
      display: inline-block;
    }

    /* Responsive */
    @media (max-width: 600px) {
      body {
        font-size: 0.95rem;
        padding: 0.5rem;
      }

      h1 {
        font-size: 1.5rem;
      }

      h2 {
        font-size: 1.2rem;
      }

      main {
        padding: 0.5rem;
      }
    }