Update README.md

README.md

@@ -3,34 +3,16 @@ title: Interactive Math Tutor
 emoji: 📐
 colorFrom: blue
 colorTo: purple
-sdk: gradio
-sdk_version: "6.17.3"
-app_file: app.py
+sdk: docker
+app_port: 7860
 pinned: false
 ---
 
 # 📐 Interactive Math Tutor
 
-Free, no sign-up, step-by-step math tutoring from **Grade 1 through High School**.  
-Powered by open-source AI — no API key needed for anyone.
+Step-by-step math tutoring from Grade 1 through High School.
+Upload a worksheet image or type any problem — powered by Llama 3.1 via Groq.
 
-## ✨ Features
-- 📸 Upload a worksheet image OR type any problem
-- 🎓 Grade level selector for tailored explanations  
-- 📖 Every step explained before it's shown
-- ⚡ Streams answers token by token
-- 🆓 Completely free — uses HuggingFace free inference
-
-## 🔧 Setup
-
-1. Set your Space SDK to **Gradio** (not Docker) in Space Settings
-2. **No secrets needed** — `HF_TOKEN` is provided automatically by HuggingFace to every Space
-3. Upload `app.py`, `requirements.txt`, `README.md` — done!
-
-## 📦 Models Used
-| Task | Model |
-|---|---|
-| Text math problems | `Qwen/Qwen2.5-Math-72B-Instruct` |
-| Worksheet images | `Qwen/Qwen2-VL-7B-Instruct` |
-
-Both are free on HuggingFace Inference API.
+## Setup
+Add `GROQ_API_KEY` as a Space Secret (free at console.groq.com/keys).
+Or users can paste their own free Groq key in the UI.