:root {
    --primary-color: #4CAF50;
    --text-color: #333;
    --bg-color: #fff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
nav {
    background: var(--bg-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
}

/* 主横幅样式 */
.hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

/* 功能区样式 */
.features {
    padding: 80px 0;
    background: #f9f9f9;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    text-align: center;
    padding: 20px;
}

.feature-item img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    margin-bottom: 20px;
}

/* 下载区样式 */
.download {
    padding: 80px 0;
    text-align: center;
    background: white;
}

.app-stores {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.store-button img {
    height: 40px;
}

/* 页脚样式 */
footer {
    background: #333;
    color: white;
    padding: 40px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}


/* ... 其他样式保持不变 ... */

.download-section {
    margin: 40px 0;
    text-align: center;
}

.download-section h2 {
    margin-bottom: 30px;
    font-size: 32px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.download-buttons a {
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.download-buttons .apple {
    background: #000;
    color: #fff;
}

.download-buttons .google {
    background: #fff;
    color: #000;
    border: 2px solid #000;
}

.download-buttons a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-buttons a {
        width: 80%;
        text-align: center;
    }
}