* {
.option-btn {
  border: 1px solid #ddd;
  background: #f7f7f7;
  padding: 1rem;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
}

.option-btn.active {
  background: #111;
  color: #fff;
}

.success-message {
  text-align: center;
  padding: 2rem 0;
}

@media (max-width: 992px) {

  .hero-content,
  .about-grid,
  .products-grid,
  .features {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {

  .navbar {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .section-heading h2,
  .about-grid h2 {
    font-size: 2rem;
  }

  .option-grid {
    grid-template-columns: 1fr;
  }
}