body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 40px;
  background: #f5f5f5;
  color: #111;
}

header {
  margin-bottom: 30px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.tile {
  display: block;
  padding: 20px;
  background: white;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.tile:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.content {
  max-width: 700px;
  margin: auto;
}

.back {
  display: inline-block;
  margin-bottom: 20px;
  text-decoration: none;
}