/* 
* 糖心官网响应式样式表
* 用于不同屏幕尺寸的适配
*/

/* 大型桌面设备 (1200px及以上) */
@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

/* 桌面设备 (992px到1199px) */
@media (max-width: 1199px) {
  .container {
    max-width: 960px;
  }
  
  .headline {
    font-size: 42px;
  }
  
  .sub-headline {
    font-size: 22px;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .download-options {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

/* 平板设备 (768px到991px) */
@media (max-width: 991px) {
  .container {
    max-width: 720px;
  }
  
  .header-wrapper {
    height: 70px;
  }
  
  .section-padding {
    padding: 60px 0;
  }
  
  .hero-section {
    padding: 140px 0 60px;
  }
  
  .headline {
    font-size: 36px;
  }
  
  .sub-headline {
    font-size: 20px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .about-content {
    flex-direction: column;
  }
  
  .about-text, .about-image {
    width: 100%;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .download-options {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonial-card {
    min-width: 100%;
    margin-bottom: 20px;
  }
  
  .contact-container {
    flex-direction: column;
  }
  
  .contact-info, .contact-form {
    width: 100%;
  }
  
  .contact-form {
    margin-top: 40px;
  }
  
  .footer-content {
    flex-direction: column;
  }
  
  .footer-logo {
    margin-bottom: 30px;
    text-align: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

/* 手机设备 (576px到767px) */
@media (max-width: 767px) {
  body {
    font-size: 15px;
  }
  
  .container {
    max-width: 540px;
  }
  
  .section-padding {
    padding: 50px 0;
  }
  
  .hero-section {
    padding: 120px 0 40px;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto 30px;
  }
  
  .headline {
    font-size: 32px;
  }
  
  .sub-headline {
    font-size: 18px;
  }
  
  .hero-description {
    font-size: 16px;
  }
  
  .cta-buttons {
    justify-content: center;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .navigation {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(255, 255, 255, 0.95);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  }
  
  .navigation.active {
    height: calc(100vh - 70px);
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
    padding: 20px;
  }
  
  .nav-item {
    margin: 15px 0;
    text-align: center;
  }
  
  .section-title {
    font-size: 26px;
  }
  
  .section-description {
    font-size: 16px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .download-options {
    grid-template-columns: 1fr;
  }
  
  .testimonials-slider {
    flex-direction: column;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 20px;
  }
  
  .footer-links-column {
    width: 100%;
    text-align: center;
  }
}

/* 小型手机设备 (576px以下) */
@media (max-width: 575px) {
  .container {
    width: 100%;
    padding: 0 20px;
  }
  
  .headline {
    font-size: 28px;
  }
  
  .section-header {
    margin-bottom: 30px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
  
  .about-content {
    gap: 20px;
  }
  
  .feature-card, .download-card, .testimonial-card {
    padding: 20px;
  }
  
  .contact-item {
    flex-direction: column;
    text-align: center;
  }
  
  .contact-icon {
    margin: 0 auto 15px;
  }
  
  .contact-form {
    padding: 20px;
  }
  
  .form-group input,
  .form-group textarea {
    padding: 10px;
  }
  
  .faq-question {
    padding: 15px 20px;
  }
  
  .faq-question h3 {
    font-size: 16px;
  }
  
  .faq-answer {
    padding: 0 20px;
  }
  
  .faq-question.active + .faq-answer {
    padding: 10px 20px 15px;
  }
}

/* 处理特定组件的响应式布局 */
@media (max-width: 480px) {
  .logo h1 {
    font-size: 24px;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  
  .btn {
    width: 100%;
  }
  
  .feature-icon, .device-icon {
    width: 60px;
    height: 60px;
  }
  
  .contact-form h3 {
    font-size: 20px;
  }
  
  .footer-logo h2 {
    font-size: 24px;
  }
}