body {
  font-family: "IBM Plex Mono", "Courier New", monospace;
  background-color: #fafafa;
  color: #111;
  max-width: 720px;
  margin: 4rem auto;
  padding: 0 1.5rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

a:hover {
  opacity: 0.7;
  border-color: transparent;
}

nav {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

nav a {
  margin: 0 1rem;
  text-transform: uppercase;
  font-weight: 500;
  border: none;
}

nav a:hover {
  opacity: 0.6;
}

h1, h2, h3 {
  font-weight: 500;
  line-height: 1.3;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.4rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.2rem;
}