body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #222;
}

header, footer {
  text-align: center;
  padding: 1rem;
  background: #eaeaea;
}

header h1 {
  margin: 0.5rem 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  padding: 1rem;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
}

.card h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.card p {
  margin: 0.4rem 0;
}

.card a {
  display: inline-block;
  margin-top: 0.5rem;
  color: #0077cc;
  text-decoration: none;
  font-weight: bold;
}

.tag {
  display: inline-block;
  background: #ddd;
  color: #333;
  padding: 2px 6px;
  margin: 2px 4px 2px 0;
  border-radius: 4px;
  font-size: 0.75rem;
}

.card a:last-of-type {
  margin-top: 0.25rem;
  color: #008800;
}

.notes {
  background: #fff;
  padding: 1.5rem;
  margin: 2rem 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.notes h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.notes ul {
  padding-left: 1.2rem;
}

.notes li {
  margin-bottom: 0.8rem;
  line-height: 1.5;
}