/* Normal desktop :1200px. */
@media (min-width: 1200px) and (max-width: 1500px) {


}


/* Normal desktop :992px. */
@media (min-width: 992px) and (max-width: 1200px) {


}

 
/* Tablet desktop :768px. */
@media (min-width: 768px) and (max-width: 991px) {
    .home2_title {
        font-size: 2.5rem !important;
    }
    
    .section-title {
        font-size: 2.2rem !important;
    }
    
    .fetures2 {
        padding: 80px 0 !important;
    }
    
    .app_choose {
        padding: 80px 0 !important;
        margin-top: 80px !important;
    }
    
    .pay_area {
        padding: 80px 0 !important;
    }
    
    .experience_area {
        padding: 80px 0 !important;
    }
    
    .cta_area {
        padding: 80px 0 !important;
    }
}

 
/* small mobile :320px. */
@media (max-width: 767px) {
    br {
        display: none;
    }
    
    /* 头部导航优化 */
    .header-area {
        padding: 10px 0 !important;
    }
    
    .logo img {
        width: 100px !important;
        height: 35px !important;
    }
    
    /* 主横幅区域优化 */
    .slider_2 {
        padding: 60px 0;
    }
    
    .home2_title {
        font-size: 2rem !important;
        line-height: 1.2;
    }
    
    .slider_2__content p {
        font-size: 1rem;
        line-height: 1.5;
    }
    
    .tp_white_border {
        padding: 12px 30px !important;
        font-size: 1rem !important;
    }
    
    /* 功能模块优化 */
    .fetures2 {
        padding: 60px 0 !important;
    }
    
    .section-title {
        font-size: 1.8rem !important;
        margin-bottom: 20px !important;
    }
    
    .featurebox2 {
        padding: 20px 15px;
        margin-bottom: 30px;
    }
    
    .fea-title {
        font-size: 1.3rem !important;
        margin-bottom: 15px;
    }
    
    /* 软件预览区域优化 */
    .app_choose {
        padding: 60px 0 !important;
        margin-top: 60px !important;
    }
    
    .choose_active {
        margin-top: 30px;
    }
    
    .choose_item img {
        max-width: 250px;
        margin: 0 auto;
    }
    
    /* 睡眠分析区域优化 */
    .pay_area {
        padding: 60px 0 !important;
    }
    
    .details_content_h2 {
        padding-top: 0 !important;
    }
    
    .section-title {
        font-size: 1.6rem !important;
        margin-bottom: 15px !important;
    }
    
    .Pay_images {
        padding-top: 30px !important;
    }
    
    /* 服务区域优化 */
    .experience_area {
        padding: 60px 0 !important;
    }
    
    .service {
        padding: 20px 15px;
        margin-bottom: 30px;
    }
    
    .service h4 {
        font-size: 1.2rem !important;
        margin-bottom: 10px;
    }
    
    /* CTA区域优化 */
    .cta_area {
        padding: 60px 0 !important;
    }
    
    .sub-title {
        font-size: 1.5rem !important;
        margin-bottom: 30px !important;
    }
    
    .cta_btn_2 {
        padding: 15px 40px !important;
        font-size: 1.1rem !important;
    }
    
    /* 页脚优化 */
    .footer-area {
        padding: 30px 0 !important;
    }
    
    /* 通用优化 */
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .row {
        margin-left: -10px;
        margin-right: -10px;
    }
    
    .col-12 {
        padding-left: 10px;
        padding-right: 10px;
    }
}
 
/* Large Mobile :480px. */
@media only screen and (min-width: 480px) and (max-width: 767px) {
    .home2_title {
        font-size: 2.2rem !important;
    }
    
    .section-title {
        font-size: 2rem !important;
    }
    
    .choose_item img {
        max-width: 300px;
    }
}

/* Hero first image sizing and centering */
@media (min-width: 992px) {
  .H2_iphonex { max-width: 420px; margin: 0 auto; display: block; }
}
@media (min-width: 768px) and (max-width: 991px) {
  .H2_iphonex { max-width: 340px; margin: 0 auto; display: block; }
}
@media (max-width: 767px) {
  .H2_iphonex {
    max-width: 260px;
    margin: 12px auto 0;
    display: block;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  }
  .slider_2__content { margin-bottom: 16px; }
}