Custom CMS Download System

Files included:
- settings.php
- index.php
- admin.php
- download-page.php
- data/sales.txt
- data/.htaccess
- downloads/.htaccess

Setup:
1. Upload all files and folders to your server.
2. Put your real product ZIP into "downloads" folder. Must be a zip file.
3. Edit settings.php (optional)
4. Visit admin.php and log in. Password is "changeme123", please change your password.
5. Add a buyer email and click Send Product.
6. The buyer receives a secure link with up to 3 downloads.
7. Use Resend Download in admin.php to reset the limit and send the link again.

Requirements:
- PHP 5+
- mail() enabled on hosting
- Apache with .htaccess support recommended