* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
  padding: 1rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.app-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.app-card {
  display: block;
  background-color: white;
  padding: 1rem;
  border-radius: 1rem;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.app-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.app-card img {
  width: 60px;
  height: 60px;
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
}

footer {
  text-align: center;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #777;
}