/* 响应式设计样式 */

/* 大屏幕设备 (1200px 及以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
    
    .hero-section {
        padding: 100px 0;
    }
    
    .feature-icon {
        width: 80px;
        height: 80px;
    }
    
    .feature-icon i {
        font-size: 35px;
    }
}

/* 中等屏幕设备 (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .pricing-display {
        font-size: 2.5rem;
    }
    
    .recommended-badge {
        top: -12px;
        padding: 6px 20px;
        font-size: 0.8rem;
    }
}

/* 平板设备 (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .navbar {
        padding: 15px 0;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
    }
    
    .hero-section {
        padding: 80px 0;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-content .lead {
        font-size: 1.1rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .feature-icon i {
        font-size: 25px;
    }
    
    .pricing-display {
        font-size: 2.2rem;
    }
    
    .download-card {
        margin-bottom: 30px;
    }
    
    .contact-info {
        margin-bottom: 20px;
    }
}

/* 手机横屏 (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .hero-section {
        padding: 60px 0;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content .lead {
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 10px 20px;
        font-size: 1rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon i {
        font-size: 20px;
    }
    
    .pricing-display {
        font-size: 2rem;
    }
    
    .recommended-badge {
        top: -10px;
        padding: 5px 15px;
        font-size: 0.75rem;
    }
    
    .countdown-item {
        min-width: 60px;
        padding: 15px 10px;
    }
    
    .countdown-number {
        font-size: 2rem;
    }
    
    .offer-title {
        font-size: 1.5rem;
    }
    
    .offer-subtitle {
        font-size: 1rem;
    }
    
    .discount-highlight {
        padding: 12px 20px;
        gap: 8px;
    }
    
    .discount-text {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }
    
    .special-offer-banner {
        padding: 30px;
    }
    
    .download-item {
        padding: 10px;
    }
    
    .download-item i {
        font-size: 25px;
        margin-right: 10px;
    }
    
    .qr-placeholder {
        width: 120px;
        height: 120px;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
    }
    
    .contact-icon i {
        font-size: 20px;
    }
}

/* 手机竖屏 (575px 及以下) */
@media (max-width: 575px) {
    /* 导航栏 */
    .navbar {
        padding: 10px 0;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .navbar-nav .nav-link {
        margin: 5px 0;
        padding: 10px 15px !important;
        text-align: center;
    }
    
    .navbar-collapse {
        background: rgba(102, 126, 234, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 10px;
        padding: 15px;
        margin-top: 10px;
    }
    
    /* 首页横幅 */
    .hero-section {
        padding: 40px 0;
        min-height: auto;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 30px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .hero-content .lead {
        font-size: 0.95rem;
        margin-bottom: 20px;
    }
    
    .d-flex.gap-3 {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-lg {
        width: 100%;
        max-width: 250px;
        margin-bottom: 10px;
    }
    
    .hero-image img {
        margin-bottom: 20px;
    }
    
    /* 通用间距 */
    .section {
        padding: 40px 0;
    }
    
    .py-5 {
        padding-top: 40px !important;
        padding-bottom: 40px !important;
    }
    
    .mb-5 {
        margin-bottom: 30px !important;
    }
    
    .mt-5 {
        margin-top: 30px !important;
    }
    
    /* 功能特性 */
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon i {
        font-size: 20px;
    }
    
    .card {
        margin-bottom: 20px;
    }
    
    /* 平台介绍 */
    .platform-image {
        margin-bottom: 20px;
    }
    
    .platform-content h3 {
        font-size: 1.3rem;
    }
    
    .feature-item {
        margin-bottom: 10px;
        padding: 8px;
    }
    
    .feature-item i {
        font-size: 18px;
        width: 20px;
    }
    
    /* 价格方案 */
    .pricing-display {
        font-size: 1.8rem;
    }
    
    .recommended-badge {
        top: -8px;
        padding: 4px 12px;
        font-size: 0.7rem;
    }
    
    .discount-badge {
        position: absolute;
        top: -5px;
        right: -5px;
        font-size: 0.65rem;
        padding: 2px 6px;
        min-width: 22px;
        transform: rotate(10deg);
    }
    
    .yearly-discount-badge {
        position: absolute;
        top: -8px;
        right: -10px;
        font-size: 0.55rem;
        padding: 2px 6px;
        min-width: 20px;
        transform: rotate(10deg);
    }
    
    .pricing-display {
        padding-top: 10px;
    }
    
    .countdown-container {
        gap: 15px;
    }
    
    .countdown-item {
        min-width: 50px;
        padding: 12px 8px;
    }
    
    .countdown-number {
        font-size: 1.5rem;
    }
    
    .countdown-label {
        font-size: 0.8rem;
    }
    
    .offer-title {
        font-size: 1.3rem;
    }
    
    .offer-subtitle {
        font-size: 0.9rem;
    }
    
    .discount-highlight {
        padding: 10px 15px;
        gap: 6px;
    }
    
    .discount-text {
        font-size: 1.2rem;
        letter-spacing: 1px;
    }
    
    .special-offer-banner {
        padding: 25px;
    }
    
    .discount-badge {
        top: -8px;
        right: -10px;
        font-size: 0.7rem;
        padding: 3px 8px;
        min-width: 28px;
    }
    
    .yearly-discount-badge {
        top: -12px;
        right: -15px;
        font-size: 0.6rem;
        padding: 3px 8px;
        min-width: 25px;
    }
    
    .pricing-display {
        padding-top: 15px;
    }
    
    .yearly-plan {
        padding: 10px;
    }
    
    .pricing-card {
        margin-bottom: 20px;
    }
    
    /* 下载区域 */
    .download-card {
        padding: 25px;
        margin-bottom: 25px;
    }
    
    .download-card h4 {
        font-size: 1.3rem;
        margin-bottom: 25px;
        text-align: center;
    }
    
    .download-item {
        padding: 15px 10px;
        margin-bottom: 12px;
    }
    
    .download-item i {
        font-size: 24px;
        margin-right: 15px;
        width: 40px;
        height: 40px;
    }
    
    .download-info h6 {
        font-size: 14px;
    }
    
    .download-info small {
        font-size: 12px;
    }
    
    .download-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .miniprogram-info-section {
        padding: 30px;
    }
    
    .miniprogram-info-item {
        padding: 25px;
    }
    
    .info-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .miniprogram-info-item h5 {
        font-size: 20px;
    }
    
    .feature-row {
        padding: 12px 15px;
    }
    
    .feature-bullet {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    /* 联系我们 */
    .contact-info {
        padding: 20px;
        margin-bottom: 15px;
    }
    
    .contact-icon {
        width: 45px;
        height: 45px;
    }
    
    .contact-icon i {
        font-size: 18px;
    }
    
    .contact-info h5 {
        font-size: 1rem;
    }
    
    .contact-info p {
        font-size: 0.9rem;
    }
    
    .contact-info small {
        font-size: 0.8rem;
    }
    
    /* 表单 */
    .card-body {
        padding: 20px;
    }
    
    .form-control {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .form-label {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }
    
    .btn-lg {
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    /* 页脚 */
    footer {
        padding: 30px 0;
    }
    
    footer h5 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    footer h6 {
        font-size: 0.95rem;
        margin-bottom: 10px;
    }
    
    footer ul li {
        margin-bottom: 8px;
    }
    
    footer ul li a {
        font-size: 0.9rem;
    }
    
    footer p {
        font-size: 0.85rem;
    }
    
    .social-links a {
        font-size: 1.2rem;
        margin-right: 10px;
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }
}

/* 超小屏幕设备 (480px 及以下) */
@media (max-width: 480px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .display-5 {
        font-size: 1.5rem;
    }
    
    .lead {
        font-size: 0.9rem;
    }
    
    .btn-lg {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .pricing-display {
        font-size: 1.5rem;
    }
    
    .recommended-badge {
        top: -6px;
        padding: 3px 10px;
        font-size: 0.65rem;
    }
    
    .download-item {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    .download-item i {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        padding: 10px;
    }
    
    .feature-item i {
        margin-right: 0;
        margin-bottom: 5px;
    }
}

/* 特殊设备适配 */

/* iPad Pro */
@media only screen 
and (min-device-width: 1024px) 
and (max-device-width: 1366px) 
and (-webkit-min-device-pixel-ratio: 2) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
    }
    
    .feature-icon i {
        font-size: 30px;
    }
}

/* iPhone X/11/12/13 */
@media only screen 
and (device-width: 375px) 
and (device-height: 812px) 
and (-webkit-device-pixel-ratio: 3) {
    .hero-section {
        padding: 50px 0;
    }
    
    .navbar {
        padding: 15px 0;
    }
    
    .hero-content h1 {
        font-size: 1.6rem;
    }
}

/* iPhone Plus */
@media only screen 
and (device-width: 414px) 
and (device-height: 736px) 
and (-webkit-device-pixel-ratio: 3) {
    .hero-content h1 {
        font-size: 1.7rem;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .back-to-top,
    .btn,
    #contact,
    footer {
        display: none !important;
    }
    
    .hero-section,
    #features,
    #platform,
    #pricing,
    #download {
        page-break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .card {
        border: 2px solid #333;
    }
    
    .form-control {
        border-width: 2px;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-section::before {
        animation: none;
    }
}

/* 深色模式支持已在主样式文件中处理，此处移除避免冲突 */