body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    margin: 0;
    padding: 40px 20px;
    background-color: #fafafa;
    color: #333;
    line-height: 1.6;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 20px;
}

h3 {
    font-weight: 600;
    margin-bottom: 15px;
    color: #444;
}

section {
    margin-bottom: 40px;
    padding: 0 10px;
    max-width: 800px;
}

#about p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 20px;
}

.external-links {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 25px;
    margin: 0 0 20px 0;
}

.external-links li a {
    text-decoration: none;
    font-weight: 600;
    color: #007bff;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    padding: 5px 0;
}

.external-links li a:hover {
    border-bottom: 2px solid #007bff;
    color: #0056b3;
}

.footer {
    font-size: 0.9rem;
    color: #888;
    margin-top: 50px;
    padding-bottom: 20px;
}

@media (max-width: 600px) {
  body {
    font-size: 1.05rem; 
    padding: 20px 10px;
  }

  h1 {
    font-size: 2.2rem; 
  }

  h3 {
    font-size: 1.3rem; 
  }

  #about p {
    font-size: 1.15rem;
  }

  .external-links li a {
    font-size: 1rem; 
  }
}