/* 响应式设计 */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 250px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 80px 2rem;
    transform: translateX(100%);
    transition: 0.3s;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  }

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

  .hero-content p {
    font-size: 1.2rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .about-content,
  .products-grid,
  .team-grid,
  .friends-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 2rem 1rem;
  }

  .scroll-to-top,
  .dark-mode-toggle {
    right: 10px;
    width: 35px;
    height: 35px;
  }

  .dark-mode-toggle {
    bottom: 60px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}