body {
  font-family: system-ui, -apple-system, sans-serif;
  max-width: 700px;
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.6;
  color: #222;
  background-color: #fafafa;
}

h1, h2 {
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.25rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.3rem;

  nav & {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #666;
    margin-bottom: 0.5rem;
  }
}

a {
  color: #0645ad;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

p {
  margin: 1rem 0;
}

ol, ul {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #ddd;
}

form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

input[type="url"] {
  flex: 1;
  padding: 0.5rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border: none;
  background-color: #0645ad;
  color: white;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #042d73;
}