rakapd2001/portal_berita ? reverse-engineered prompt

Build me a simple berita portal web app in PHP that lets me see a list of news posts, open one article for full details, and manage the data with add, edit, and delete actions.

I want it to feel like a small school project that is easy to use and clean to look at. Use a MySQL database connection, read the schema from the SQL file if needed, and wire the pages together so the homepage shows the latest or all news items, the detail page shows one full story, and the form pages can save changes back to the database.

Please make the layout neat and responsive enough to use on phone and desktop, with a simple navigation and readable typography. If anything is unclear, look up current docs online if you need to, and keep the code organized so it is easy to run locally with minimal setup.