* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #f7f9fb;
  color: #333;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background: #0031d6;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.logo-lab {
  height: 80px;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.5rem;
  color: white;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  flex-grow: 1;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
  cursor: pointer;
  height: 13em;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.card img {
  max-width: 100%;
  height: 90px;
  object-fit: contain;
  margin-bottom: 0.5rem;
}

.card h2 {
  font-size: 1rem;
  color: #222;
  margin-top: 0.3rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #ffffff;
  font-size: 0.9rem;
  color: #555;
  border-top: 1px solid #eee;
}