@media (max-width: 768px) {
  .nav-center .site-title,
  .nav-center .subtitle {
    display: none;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    background: #fff;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    border-top: 1px solid #eaeaea;
    padding: 20px 0;
  }

  .nav-links a {
    padding: 10px 20px;
    text-align: center;
  }

  .nav-links.active {
    display: flex;
  }

  .menu-btn {
    display: block;
  }

  .close-btn {
    display: none;
  }

  .menu-open .menu-btn {
    display: none;
  }

  .menu-open .close-btn {
    display: block;
  }

  .hero-image {
    height: 60vh;
  }
  .hero-text h1 {
    font-size: 2rem;
  }
  .hero-text p {
    font-size: 1rem;
  }
  .hero-text button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}