body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: #f9fafb;
  color: #1f2937;
  line-height: 1.7;
}

a:visited {
  color: inherit;
}

h1, h2, h3 {
  color: #111827;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0.5rem 0;
}

ul {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  list-style-type: disc;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th, td {
  border: 1px solid #d1d5db;
  padding: 0.5rem;
  text-align: left;
}

thead {
  background-color: #f3f4f6;
  font-weight: 600;
}

details summary {
  cursor: pointer;
  font-weight: 600;
}

details[open] summary {
  color: #2563eb;
}