.up-container { max-width: 600px; margin: 0 auto; padding: 20px; }
.up-section { display: none; }
.up-section.active { display: block; }
.up-form input, .up-form button { width: 100%; padding: 10px; margin: 5px 0; }
.up-error { color: red; }
.up-download-btn { display: inline-block; padding: 10px 20px; background: #0073aa; color: white; text-decoration: none; margin: 5px; border-radius: 5px; }
.up-download-btn:hover { background: #005177; }