body {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen;
  background: #f4fef4;
  margin: 0;
  padding: 0;
  color: #222;
}

.hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
}

.logo {
  height: 200px;
  margin-bottom: 1rem;
}

.highlight {
  color: #00aa55;
}

.subtitle {
  font-size: 1.25rem;
  color: #555;
  max-width: 600px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  text-align: left;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease-in-out;
  text-decoration: none;
  color: inherit;
}

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

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
  color: #888;
}

/********* 404 *******/
.not-found {
  text-align: center;
  padding: 5rem 1rem;
}

.not-found h1 {
  font-size: 5rem;
  margin: 0;
  color: #00aa55;
}

.not-found h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.not-found .message {
  font-size: 1rem;
  color: #666;
  margin-bottom: 2rem;
}

.back-home {
  text-decoration: none;
  background-color: #00aa55;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.back-home:hover {
  background-color: #008f49;
}