body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #222;
}
header {
  background: #111;
  color: #fff;
  padding: 2rem;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.5rem;
}
header p {
  font-size: 1.2rem;
  margin-top: 0.5rem;
}
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}
.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  padding: 1.5rem;
  text-align: center;
}
.card h3 {
  margin-top: 0;
}
.card p {
  color: #666;
}
.card a {
  text-decoration: none;
  color: #007aff;
  font-weight: 500;
}
footer {
  text-align: center;
  padding: 2rem;
  color: #777;
  font-size: 0.9rem;
}