body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #1e293b;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 40px 20px;
}

.header {
  border-bottom: 1px solid #ddd;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.buttons a {
  margin-left: 10px;
  text-decoration: none;
  padding: 10px 15px;
  border-radius: 10px;
  background: black;
  color: white;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}

.hero img {
  width: 100%;
  border-radius: 20px;
}

.dark {
  background: #0f172a;
  color: white;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 15px;
  background: white;
}

.contact {
  background: #f1f5f9;
}

footer {
  text-align: center;
  padding: 20px;
  background: #111;
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .hero, .grid-3 {
    grid-template-columns: 1fr;
  }
}