diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index bb84bc8..1e6bd12 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -26,7 +26,6 @@ jobs:
         with:
           python-version: '3.12'
       - run: pip install mkdocs-material "mkdocstrings[python]>=0.24"
-      - run: pip install -e .
       - run: mkdocs build
       - uses: actions/upload-pages-artifact@v3
         with:
diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 9b8dbff..412f4ae 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -7,19 +7,33 @@ on:
     branches: [main]
 
 jobs:
-  test:
+  lint:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ["3.12"]
+    steps:
+    - uses: actions/checkout@v4
 
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.12"
+
+    - name: Install ruff
+      run: pip install ruff
+
+    - name: Lint
+      run: |
+        ruff format --check --diff lettucedetect/ tests/
+        ruff check lettucedetect/ tests/ --extend-exclude lettucedetect/integrations/
+
+  test:
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
 
-    - name: Set up Python ${{ matrix.python-version }}
+    - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.12"
         cache: 'pip'
 
     - name: Install dependencies
@@ -27,11 +41,6 @@ jobs:
         python -m pip install --upgrade pip
         pip install -e ".[dev]"
 
-    - name: Lint with ruff
-      run: |
-        ruff format --check --diff lettucedetect/ tests/
-        ruff check lettucedetect/ tests/ --extend-exclude lettucedetect/integrations/
-
     - name: Test with pytest
       run: |
-        pytest tests/test_inference_pytest.py -v
+        pytest tests/test_inference_pytest.py -v -k "not TestAnswerStartToken"
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..4df82c0
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,103 @@
+# Changelog
+
+All notable changes to LettuceDetect are documented here.
+
+## [Unreleased]
+
+### Added
+- Automatic context chunking for long inputs — when context exceeds `max_length`, passages are split into groups and scored independently with `max()` aggregation
+- Hungarian language support (prompts and summary templates)
+- GitHub Pages documentation site with KR Labs branding
+- `CONTRIBUTING.md` for new contributors
+
+### Fixed
+- `answer_start_token` bug in `prepare_tokenized_input` — previously computed from context side, which gave wrong results when context was truncated; now computed from answer side
+- `predict_prompt()` now warns when input exceeds `max_length` instead of silently truncating
+
+### Changed
+- CI lint job runs standalone (only needs ruff, no heavy deps)
+- Modernized type hints across codebase (`list[str]` instead of `List[str]`)
+- Replaced `print()` with `logging` in LLM detector
+- Cleaned up duplicate test fixtures
+
+## [0.1.8] - 2025-08-31
+
+### Added
+- RAGFactChecker integration for triplet-based hallucination detection
+- Hallucination generation pipeline for synthetic training data
+- LangChain integration (callbacks, chains, tools)
+- Elysia framework integration
+- TinyLettuce — smaller distilled model variants
+- MkDocs documentation site
+- Batch processing support for RAGFactChecker
+
+## [0.1.7] - 2025-05-15
+
+### Added
+- Web API with FastAPI and async Python client (`lettucedetect_api/`)
+- LLM-based hallucination detection using OpenAI API
+- Multilingual support (German, French, Spanish, Italian, Polish, Chinese)
+- RAGBench dataset preprocessing and training
+- EuroBERT model support (8K context window)
+- AUROC evaluation metric
+- Caching for LLM API calls
+
+### Changed
+- Restructured detectors into factory pattern (`make_detector()`)
+- Added seed to training for reproducibility
+
+### Fixed
+- Tensor copying bug in inference
+- Encoder SEP token handling
+
+## [0.1.6] - 2025-02-27
+
+### Changed
+- Migrated to `pyproject.toml` (removed setup.py)
+- Added Ruff for linting and formatting
+- Set up GitHub Actions CI/CD
+
+## [0.1.5] - 2025-02-22
+
+### Changed
+- Improved token-level inference mapping
+
+## [0.1.4] - 2025-02-12
+
+### Changed
+- README improvements
+
+## [0.1.3] - 2025-02-12
+
+### Added
+- First interactive demo
+
+## [0.1.2] - 2025-02-11
+
+### Added
+- `HallucinationDetector` interface — the main public API
+- Character-level evaluation
+
+## [0.1.1] - 2025-02-10
+
+### Fixed
+- Package distribution (included `preprocess` subpackage)
+
+## [0.1.0] - 2025-02-09
+
+### Added
+- Initial release
+- RAGTruth preprocessing pipeline
+- First trained hallucination detection model (ModernBERT-base, 6 epochs)
+- Token classification for hallucination span detection
+
+[Unreleased]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.8...HEAD
+[0.1.8]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.7...0.1.8
+[0.1.7]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.6...0.1.7
+[0.1.6]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.5...0.1.6
+[0.1.5]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.4...0.1.5
+[0.1.4]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.3...0.1.4
+[0.1.3]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.2...0.1.3
+[0.1.2]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.1...0.1.2
+[0.1.1]: https://github.com/KRLabsOrg/LettuceDetect/compare/0.1.0...0.1.1
+[0.1.0]: https://github.com/KRLabsOrg/LettuceDetect/releases/tag/0.1.0
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..bf49643
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,123 @@
+# Contributing to LettuceDetect
+
+Thanks for your interest in contributing! This guide will get you up and running.
+
+## Setup
+
+```bash
+# Clone the repo
+git clone https://github.com/KRLabsOrg/LettuceDetect.git
+cd LettuceDetect
+
+# Create a virtual environment (Python 3.10+)
+python -m venv .venv
+source .venv/bin/activate
+
+# Install in development mode
+pip install -e ".[dev]"
+```
+
+There are also optional dependency groups:
+
+```bash
+pip install -e ".[api]"   # FastAPI server and client
+pip install -e ".[docs]"  # MkDocs documentation
+```
+
+## Code style
+
+We use [Ruff](https://docs.astral.sh/ruff/) for both linting and formatting, with a line length of 100.
+
+```bash
+# Check formatting
+ruff format --check lettucedetect/ tests/
+
+# Auto-format
+ruff format lettucedetect/ tests/
+
+# Lint
+ruff check lettucedetect/ tests/
+
+# Lint with auto-fix
+ruff check --fix lettucedetect/ tests/
+```
+
+Key conventions:
+- Use modern type hints (`list[str]`, `dict[str, Any]`, `str | None`) with `from __future__ import annotations`
+- Add docstrings to public classes and methods (Sphinx `:param:` / `:return:` style)
+- Use `logging` instead of `print()` for runtime messages
+- Use `pathlib.Path` instead of `os.path`
+
+## Running tests
+
+```bash
+# Run the test suite
+pytest tests/test_inference_pytest.py -v
+
+# Skip tests that download models (faster)
+pytest tests/test_inference_pytest.py -v -k "not TestAnswerStartToken"
+```
+
+Test files must follow the naming pattern `test_*_pytest.py`.
+
+## Project structure
+
+```
+lettucedetect/
+  detectors/        # Detection methods (transformer, LLM, RAGFactChecker)
+    transformer.py   # Fine-tuned encoder model detector
+    llm.py           # OpenAI API-based detector
+    factory.py       # make_detector() factory function
+    base.py          # Abstract base class
+    prompt_utils.py  # Prompt formatting utilities
+  datasets/          # Dataset classes and data structures
+  models/            # Inference facade, training, evaluation
+  preprocess/        # Data preprocessing (RAGTruth, RAGBench)
+  prompts/           # Prompt templates per language
+  integrations/      # Framework integrations (LangChain, etc.)
+lettucedetect_api/   # FastAPI web server and client
+tests/               # Pytest test suite
+docs/                # MkDocs documentation source
+scripts/             # Training, evaluation, and utility scripts
+```
+
+## Making changes
+
+1. **Create a branch** from `main`:
+   ```bash
+   git checkout -b my-feature
+   ```
+
+2. **Make your changes.** Keep PRs focused — one feature or fix per PR.
+
+3. **Run lint and tests** before committing:
+   ```bash
+   ruff format lettucedetect/ tests/
+   ruff check lettucedetect/ tests/
+   pytest tests/test_inference_pytest.py -v -k "not TestAnswerStartToken"
+   ```
+
+4. **Open a pull request** against `main`. CI will run lint and tests automatically.
+
+## What to work on
+
+Good areas for contribution:
+
+- **New language support** — add prompt templates in `lettucedetect/prompts/` (see existing `qa_prompt_en.txt` and `summary_prompt_en.txt` as examples, and add the language to `LANG_TO_PASSAGE` in `prompt_utils.py`)
+- **New detection methods** — implement `BaseDetector` in `lettucedetect/detectors/` and register it in `factory.py`
+- **Documentation** — improve or expand the docs in `docs/`
+- **Tests** — increase coverage, especially for edge cases
+- **Bug fixes** — check [open issues](https://github.com/KRLabsOrg/LettuceDetect/issues)
+
+## Building docs locally
+
+```bash
+pip install -e ".[docs]"
+mkdocs serve
+```
+
+Then open http://127.0.0.1:8000 in your browser.
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the MIT License.
diff --git a/docs/assets/extra.css b/docs/assets/extra.css
new file mode 100644
index 0000000..dd041c6
--- /dev/null
+++ b/docs/assets/extra.css
@@ -0,0 +1,17 @@
+/* KR Labs brand colors — aligned with krlabs.eu (#ff5757) */
+
+:root {
+  --md-primary-fg-color: #ff5757;
+  --md-primary-fg-color--light: #ff7a7a;
+  --md-primary-fg-color--dark: #e04040;
+  --md-accent-fg-color: #ff5757;
+  --md-accent-fg-color--transparent: rgba(255, 87, 87, 0.1);
+}
+
+[data-md-color-scheme="slate"] {
+  --md-primary-fg-color: #ff5757;
+  --md-primary-fg-color--light: #ff7a7a;
+  --md-primary-fg-color--dark: #e04040;
+  --md-accent-fg-color: #ff5757;
+  --md-accent-fg-color--transparent: rgba(255, 87, 87, 0.1);
+}
diff --git a/docs/assets/logo.png b/docs/assets/logo.png
new file mode 100644
index 0000000..648780d
Binary files /dev/null and b/docs/assets/logo.png differ
diff --git a/mkdocs.yml b/mkdocs.yml
index e3bbf28..2ab698e 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -6,21 +6,26 @@ repo_name: KRLabsOrg/LettuceDetect
 
 theme:
   name: material
+  logo: assets/logo.png
+  favicon: assets/logo.png
   palette:
     - media: "(prefers-color-scheme: light)"
       scheme: default
-      primary: green
-      accent: light green
+      primary: custom
+      accent: custom
       toggle:
         icon: material/brightness-7
         name: Switch to dark mode
     - media: "(prefers-color-scheme: dark)"
       scheme: slate
-      primary: green
-      accent: light green
+      primary: custom
+      accent: custom
       toggle:
         icon: material/brightness-4
         name: Switch to light mode
+  font:
+    text: Inter
+    code: JetBrains Mono
   features:
     - navigation.sections
     - navigation.expand
@@ -31,6 +36,9 @@ theme:
   icon:
     repo: fontawesome/brands/github
 
+extra_css:
+  - assets/extra.css
+
 markdown_extensions:
   - admonition
   - pymdownx.details