body {
  background-color: #F9FAFB;
  color: #1F2937;
  font-family: sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 50rem;
  margin: auto;
  padding: 2rem;
}

header {
  background: #FFF;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  padding: 1rem 1.5rem;
  border: 1px solid #E5E7EB;
  margin-bottom: 2rem;
}

header h1 {
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0;
}

header p {
  font-size: 1rem;
  color: #4B5563;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1F2937;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  border-left: 4px solid #ccc;
  padding-left: 1rem;
}

h3 {
  font-size: 1.125rem;
  font-weight: 500;
  color: #374151;
  margin-top: 1rem;
  margin-bottom: 0.25rem;
}

ul {
  list-style-position: inside;
  padding-left: 1rem;
  margin: 0;
}

ul li {
  margin-bottom: 0.25rem;
}

article {
  background: #FeFeFe;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  padding: 2.5rem;
  border: 1px solid #E5E7EB;
}

article p {
  font-size: 1rem;
  color: #4B5563;
  margin-bottom: 1rem;
}

article h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 1rem;
}

article blockquote {
  padding: 1rem;
  background: #F9FAFB;
  border-left: 4px solid #D1D5DB;
  color: #4B5563;
  font-style: italic;
  margin: 1rem 0;
}

article ul, article ol {
  list-style-position: inside;
  padding-left: 1rem;
  margin: 1rem 0;
}

article ul {
  list-style-type: '› ';
}

article ol {
  list-style-type: decimal;
}

article li {
  margin-bottom: 0.25rem;
}

@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }

  header {
    padding: 0.75rem 1rem;
  }

  article {
    padding: 1rem;
  }

  h2 {
    padding-left: 0.5rem;
  }

  ul, article ul, article ol {
    padding-left: 0.5rem;
  }
}