/* Reset */
  *, *::before, *::after {
    box-sizing: border-box;
  }
  body {
    margin: 0; padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f9fafb;
    color: #222;
    line-height: 1.6;
    margin-top: 7em;
  }
  h1, h2, h3 {
    font-weight: 700;
    color: #0a4275;
  }
  h1 {
    font-size: 2.8rem;
    margin-bottom: 0.5rem;
    text-align: center;
    padding-top: 2rem;
  }
  h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 3px solid #0a4275;
    padding-bottom: 0.25rem;


  }
  h3 {
    font-size: 1.2rem;
    margin-bottom: 0.4rem;
    color: #0d3a5e;
  }
  main {
    max-width: 960px;
    margin: 0 auto 3rem auto;
    padding: 0 1rem;
    margin-top: 12em;

  }
  section {
    margin-bottom: 2rem;
  }
  section ul {
    list-style: none;
    padding-left: 1rem;
  }
  section ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.3rem;
    font-size: 1rem;

  }
  section ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #0a4275;
    font-weight: bold;
  }
  /* Special paragraph style for longer texts */
  .course-description {
    background: #e8f0fe;
    border-left: 5px solid #0a4275;
    padding: 1rem 1rem 1rem 1.2rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    color: #0a3e7a;
  }
  /* Responsive typography */
  @media (max-width: 600px) {
    h1 {
      font-size: 2rem;
      padding-top: 1.2rem;
    }
    h2 {
      font-size: 1.4rem;
      margin-top: 1.5rem;
    }
    h3 {
      font-size: 1rem;
    }
    ul li {
      font-size: 0.95rem;
    }
  }