body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #000;
  color: #fff;
  text-align: center;
}
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: #000;
}
.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  font-weight: 300;
}
.btn {
  display: inline-block;
  padding: 15px 30px;
  border: 2px solid #fff;
  color: #fff;
  text-decoration: none;
  font-size: 1.2rem;
  transition: 0.3s;
}
.btn:hover {
  background: #fff;
  color: #000;
}
.catalog {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  padding: 40px;
}
.item {
  background: #111;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(255,255,255,0.1);
}
.item img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 15px;
}
.btn.small {
  padding: 10px 20px;
  font-size: 1rem;
}