:root {
    --primary-color: #007AFF;
    --text-color: #333;
    --background-color: #f5f5f7;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

.hero {
    background: linear-gradient(135deg, #0396FF 0%, #ABDCFF 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero .subtitle {
    font-size: 1.5rem;
    margin-bottom: 40px;
}

.app-store-badge {
    display: flex;
    justify-content: center;
}

.app-store-badge img {
    height: 40px;
}

.features {
    padding: 80px 0;
}

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

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

.feature-item img {
    width: 100%;
    max-width: 300px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.feature-item h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.app-preview {
    background: linear-gradient(135deg, #0396FF 0%, #ABDCFF 100%);
    padding: 80px 0;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.preview-grid img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-color);
}

footer {
    background-color: #333;
    color: white;
    padding: 20px 0;
    text-align: center;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
    }
} 

/* 修改下载按钮的样式 */
.download-button {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    border-radius: 10px; /* 圆角 */
    padding: 10px; /* 内边距 */
    text-decoration: none; /* 去掉下划线 */
    color: black; /* 文字颜色 */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); /* 增加阴影效果以增强立体感 */
    width: 150px; /* 固定宽度 */
}

.apple-logo {
    width: 20px; /* 根据需要调整 logo 大小 */
    height: 20px; /* 保持1:1的高宽比 */
    object-fit: contain; /* 确保图像保持比例 */
    margin-right: 10px; /* 文字与 logo 之间的间距 */
}

.preview-container {
    overflow-x: auto; /* 允许水平滚动 */
    white-space: nowrap; /* 防止换行 */
}

.preview-scroll img {
    width: 200px; /* 根据需要调整图片宽度 */
    margin-right: 10px; /* 图片之间的间距 */
    display: inline-block; /* 使图片并排显示 */
    border-radius: 12px; /* 添加圆角效果 */
}

.app-logo {
    width: 100px; /* 根据需要调整 logo 大小 */
    border-radius: 12px; /* 添加圆角效果 */
    margin-bottom: 20px; /* logo 与标题之间的间距 */
}