body {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    text-align: center;
    padding: 40px 0 30px;
}

.logo {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.app-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.app-subtitle {
    font-size: 16px;
    color: #666;
    margin-bottom: 0;
}

.download-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.download-item {
    margin-bottom: 30px;
}

.download-item:last-child {
    margin-bottom: 0;
}

.download-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.app-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    margin-right: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.app-info h3 {
    margin: 0 0 5px;
    font-size: 20px;
    font-weight: bold;
}

.app-info p {
    margin: 0;
    font-size: 14px;
    color: #666;
}

.download-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 14px;
    color: #999;
}

.download-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.download-btn {
    flex: 1;
    min-width: calc(50% - 5px);
    padding: 16px;
    background: linear-gradient(135deg, #f32610, #f95f4a);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(243, 38, 16, 0.3);
}

.download-btn.store {
    background: linear-gradient(135deg, #4CAF50, #66BB6A);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

.download-btn.store:hover {
    background: linear-gradient(135deg, #45a049, #5cb860);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
}

.download-btn.full-width {
    min-width: 100%;
}

.download-btn:not(.store):hover {
    background: linear-gradient(135deg, #d4200c, #e85444);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(243, 38, 16, 0.4);
}

.download-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(243, 38, 16, 0.3);
}

.download-btn i {
    margin-right: 8px;
}

.tips-section {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
}

.tips-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-list li {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.tips-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #f32610;
    font-size: 18px;
    line-height: 1.4;
}

.tips-list li:last-child {
    margin-bottom: 0;
}

.wechat-mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    padding: 20px;
}

.wechat-mask.show {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

.wechat-tip {
    background: white;
    border-radius: 15px;
    padding: 30px 20px;
    text-align: center;
    max-width: 400px;
    margin-top: 60px;
}

.wechat-tip h3 {
    font-size: 20px;
    color: #333;
    margin: 0 0 15px;
}

.wechat-tip p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin: 0 0 20px;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.footer {
    text-align: center;
    padding: 25px 15px;
    font-size: 12px;
    color: #999;
    line-height: 1.8;
}

.footer a {
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #4CAF50;
}

@media (max-width: 480px) {
    .header {
        padding: 30px 0 20px;
    }
    
    .logo {
        width: 80px;
        height: 80px;
    }
    
    .app-title {
        font-size: 24px;
    }
    
    .download-section {
        padding: 20px;
    }
    
    .download-btn {
        padding: 14px;
        font-size: 14px;
        min-width: 100%;
    }
    
    .download-buttons {
        flex-direction: column;
        gap: 10px;
    }
}