Deploy Node.js Site to Hostinger

I already have the full source code for a dynamic Node.js website and an active Hostinger account with the domain ready to point. What I need now is straightforward: upload the code, set up any required environment variables, link the database if one is used, and make sure the site loads flawlessly from the browser.

Please handle:
• Transferring the project files to my Hostinger server (via FTP / SSH).
• Installing all dependencies with the correct Node version.
• Configuring environment variables, build scripts, and start commands.
• Connecting the site to its database and confirming data reads / writes.
• Testing that every public route, form, and API endpoint responds correctly over HTTPS.

Acceptance criteria: the site must be fully accessible at my domain with no console or server errors, and I need a short written summary of the steps you took so I can reproduce them in the future.