body {
  margin: 0;
  padding: 24px;
  font-family: Arial, sans-serif;
  background: #fafafa;
  color: #111;
}

main {
  max-width: 1000px;
  margin: 0 auto;
}

h1 {
  font-size: 40px;
  margin-bottom: 8px;
}

h2 {
  margin-top: 40px;
}

.contributors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  border: 1px solid #ddd;
  background: white;
  padding: 16px;
}

.card img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
}

.card h3 {
  margin: 12px 0 4px;
}

.card p {
  margin: 6px 0;
}

.meta {
  color: #555;
  font-size: 14px;
}

.learned {
  padding-left: 18px;
}

.links a {
  margin-right: 10px;
}

footer {
  margin-top: 48px;
  border-top: 1px solid #ddd;
}