/* 响应式设计 */

/* 大型平板和小型桌面 */
@media (max-width: 1200px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  h1 {
    font-size: 2.8rem;
  }
  
  h2 {
    font-size: 2.2rem;
  }
  
  .hero-image {
    width: 45%;
  }
}

/* 中型平板 */
@media (max-width: 992px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.3rem;
  }
  
  .hero .container {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-content {
    max-width: 100%;
    margin-bottom: var(--spacing-xl);
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-image {
    width: 60%;
    max-width: 300px;
  }
  
  .pain-points-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tab-content-inner {
    flex-direction: column;
  }
  
  .tab-text {
    width: 100%;
    padding-right: 0;
    margin-bottom: var(--spacing-lg);
  }
  
  .tab-image {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .pricing-cards {
    gap: var(--spacing-md);
  }
  
  .pricing-card {
    max-width: 300px;
  }
  
  .download .container {
    flex-direction: column;
    text-align: center;
  }
  
  .download-content {
    width: 100%;
    max-width: 100%;
    margin-bottom: var(--spacing-xl);
  }
  
  .download h2 {
    text-align: center;
  }
  
  .app-stores {
    justify-content: center;
  }
  
  .download-qr {
    justify-content: center;
  }
  
  .download-image {
    width: 60%;
    max-width: 300px;
  }
}

/* 小型平板和大型手机 */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  section {
    padding: var(--spacing-xl) 0;
  }
  
  h1 {
    font-size: 2.2rem;
    margin-bottom: var(--spacing-md);
  }
  
  h2 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
  }
  
  .main-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-content {
    margin-bottom: var(--spacing-lg);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .stat {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .pain-points-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .features-tabs-nav {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }
  
  .tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .app-styles-nav {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }
  
  .style-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
  }
  
  .pricing-cards {
    flex-direction: column;
    align-items: center;
  }
  
  .pricing-card {
    max-width: 100%;
  }
  
  .pricing-card.popular {
    transform: scale(1);
    order: -1;
    margin-bottom: var(--spacing-md);
  }
  
  .pricing-card.popular:hover {
    transform: scale(1) translateY(-8px);
  }
  
  .footer-top {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .footer-nav {
    flex-direction: column;
  }
  
  .footer-nav-column {
    width: 100%;
    margin-bottom: var(--spacing-md);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

/* 中小型手机 */
@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.6rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .step {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .step-number {
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }
  
  .step:not(:last-child)::after {
    display: none;
  }
  
  .testimonial-card {
    padding: var(--spacing-md);
  }
  
  .testimonial-author {
    flex-direction: column;
    text-align: center;
  }
  
  .testimonial-author img {
    margin-right: 0;
    margin-bottom: var(--spacing-sm);
  }
  
  .pricing-guarantee {
    flex-direction: column;
    text-align: center;
  }
  
  .guarantee-icon {
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }
  
  .app-stores {
    flex-direction: column;
    align-items: center;
  }
  
  .download-qr {
    flex-direction: column;
  }
  
  .download-qr img {
    margin-right: 0;
    margin-bottom: var(--spacing-sm);
  }
}