/* 响应式设计 */

/* Tablet */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 36px;
  }

  .hero p {
    font-size: 18px;
  }

  .section-title {
    font-size: 28px;
  }

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

/* Mobile */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    gap: 15px;
  }

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

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 50px 0;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .btn {
    display: block;
    width: 100%;
    margin: 10px 0;
  }

  .btn-outline {
    margin-left: 0;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .services-grid,
  .features-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .article-header h1 {
    font-size: 24px;
  }

  .article-content {
    font-size: 15px;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .service-card {
    padding: 20px;
  }

  .blog-card {
    margin: 0 -15px;
    border-radius: 0;
  }
}