/* 响应式设计样式 */

/* 平板设备 (768px 及以下) */
@media screen and (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏 */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* 主页横幅 */
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        margin-bottom: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .version-info {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    /* 通用版块 */
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* 功能特色 */
    .features {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 应用截图 */
    /* 
    .screenshots {
        padding: 60px 0;
    }
    
    .screenshots-gallery {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    */
    
    /* 下载安装 */
    .download {
        padding: 60px 0;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    /* 更新日志 */
    .changelog {
        padding: 60px 0;
    }
    
    .version-header {
        flex-wrap: wrap;
    }
    
    /* 联系我们 */
    .contact {
        padding: 60px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 页脚 */
    .footer {
        padding: 50px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}

/* 手机设备 (480px 及以下) */
@media screen and (max-width: 480px) {
    /* 主页横幅 */
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
    }
    
    /* 通用版块 */
    .section-title {
        font-size: 1.8rem;
    }
    
    /* 功能特色 */
    .feature-card {
        padding: 20px;
    }
    
    /* 页脚 */
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-bottom {
        font-size: 0.9rem;
    }
}

/* 大屏幕设备 (1200px 及以上) */
@media screen and (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-subtitle {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}