diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index d8e5d9e943..f30ea3bef9 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -34,14 +34,13 @@ jobs:
             - docs_src/**
             - pyproject.toml
             - uv.lock
-            - mkdocs.yml
-            - mkdocs.env.yml
             - .github/workflows/build-docs.yml
             - .github/workflows/deploy-docs.yml
-            - scripts/mkdocs_hooks.py
+            - scripts/docs.py
   langs:
     needs:
       - changes
+    if: ${{ needs.changes.outputs.docs == 'true' }}
     runs-on: ubuntu-latest
     outputs:
       langs: ${{ steps.show-langs.outputs.langs }}
@@ -103,21 +102,28 @@ jobs:
         run: uv run ./scripts/docs.py update-languages
       - uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
-          key: mkdocs-cards-${{ matrix.lang }}-${{ github.ref }}
-          path: docs/${{ matrix.lang }}/.cache
+          key: zensical-${{ matrix.lang }}-${{ github.ref }}
+          path: site_zensical_src/${{ matrix.lang }}/.cache
       - name: Build Docs
         run: | # zizmor: ignore[template-injection] - comes from trusted source
           uv run ./scripts/docs.py build-lang ${{ matrix.lang }}
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: docs-site-${{ matrix.lang }}
-          path: ./site/**
+          # English owns root static assets. Translated pages reference /img, /css,
+          # and /js, so omit duplicated language-local copies from artifacts.
+          path: |
+            ./site/**
+            !./site/${{ matrix.lang }}/img/**
+            !./site/${{ matrix.lang }}/css/**
+            !./site/${{ matrix.lang }}/js/**
           include-hidden-files: true
 
   # https://github.com/marketplace/actions/alls-green#why
   docs-all-green:  # This job does nothing and is only used for the branch protection
     if: always()
     needs:
+      - langs
       - build-docs
     runs-on: ubuntu-latest
     steps:
@@ -125,4 +131,4 @@ jobs:
         uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe # v1.2.2
         with:
           jobs: ${{ toJSON(needs) }}
-          allowed-skips: build-docs
+          allowed-skips: langs, build-docs
diff --git a/.gitignore b/.gitignore
index 243cdb93a5..2c0d859ad7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@ __pycache__
 htmlcov
 dist
 site
+site_zensical_src
 .coverage*
 coverage.xml
 .netlify
diff --git a/docs/de/docs/index.md b/docs/de/docs/index.md
index c71391432a..d557554a12 100644
--- a/docs/de/docs/index.md
+++ b/docs/de/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/de/mkdocs.yml b/docs/de/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/de/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/en/docs/contributing.md b/docs/en/docs/contributing.md
index fe7318f6cd..d22fa09e58 100644
--- a/docs/en/docs/contributing.md
+++ b/docs/en/docs/contributing.md
@@ -100,10 +100,10 @@ Go into the language directory, for the main docs in English it's at `docs/en/`:
 $ cd docs/en/
 ```
 
-Then run `mkdocs` in that directory:
+Then run `zensical` in that directory:
 
 ```console
-$ mkdocs serve --dev-addr 127.0.0.1:8008
+$ zensical serve --dev-addr 127.0.0.1:8008
 ```
 
 ///
@@ -129,7 +129,7 @@ Completion will take effect once you restart the terminal.
 
 ### Docs Structure
 
-The documentation uses [MkDocs](https://www.mkdocs.org/).
+The documentation uses [Zensical](https://zensical.org).
 
 And there are extra tools/scripts in place to handle translations in `./scripts/docs.py`.
 
diff --git a/docs/en/docs/external-links.md b/docs/en/docs/external-links.md
index e92c881f42..e1614e818f 100644
--- a/docs/en/docs/external-links.md
+++ b/docs/en/docs/external-links.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  topic_repos: data/topic_repos.yml
+---
+
 # External Links
 
 **FastAPI** has a great community constantly growing.
diff --git a/docs/en/docs/fastapi-people.md b/docs/en/docs/fastapi-people.md
index 28e0ce3d69..ad32966e57 100644
--- a/docs/en/docs/fastapi-people.md
+++ b/docs/en/docs/fastapi-people.md
@@ -1,6 +1,16 @@
 ---
 hide:
   - navigation
+
+include_yaml:
+  github_sponsors: data/github_sponsors.yml
+  people: data/people.yml
+  contributors: data/contributors.yml
+  translation_reviewers: data/translation_reviewers.yml
+  skip_users: data/skip_users.yml
+  members: data/members.yml
+  sponsors_badge: data/sponsors_badge.yml
+  sponsors: data/sponsors.yml
 ---
 
 # FastAPI People
diff --git a/docs/en/docs/index.md b/docs/en/docs/index.md
index 149e44a044..0aeee755ec 100644
--- a/docs/en/docs/index.md
+++ b/docs/en/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/en/mkdocs.env.yml b/docs/en/mkdocs.env.yml
deleted file mode 100644
index c5f6e07d79..0000000000
--- a/docs/en/mkdocs.env.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-# Define this here and not in the main mkdocs.yml file because that one is auto
-# updated and written, and the script would remove the env var
-markdown_extensions:
-  pymdownx.highlight:
-    linenums: !ENV [LINENUMS, false]
diff --git a/docs/en/mkdocs.yml b/docs/en/mkdocs.yml
index bb67bca917..b2918cbb67 100644
--- a/docs/en/mkdocs.yml
+++ b/docs/en/mkdocs.yml
@@ -1,10 +1,10 @@
-INHERIT: ../en/mkdocs.env.yml
 site_name: FastAPI
 site_description: FastAPI framework, high performance, easy to learn, fast to code, ready for production
 site_url: https://fastapi.tiangolo.com/
 theme:
+  variant: classic
   name: material
-  custom_dir: ../en/overrides
+  custom_dir: overrides
   palette:
   - media: (prefers-color-scheme)
     toggle:
@@ -45,38 +45,13 @@ theme:
   - search.suggest
   - toc.follow
   icon:
-    repo: fontawesome/brands/github-alt
+    repo: octicons/mark-github-24
   logo: img/icon-white.svg
   favicon: img/favicon.png
   language: en
 repo_name: fastapi/fastapi
 repo_url: https://github.com/fastapi/fastapi
 plugins:
-  social:
-    cards_layout_options:
-      logo: ../en/docs/img/icon-white.svg
-  typeset: null
-  search: null
-  macros:
-    include_yaml:
-    - github_sponsors: ../en/data/github_sponsors.yml
-    - people: ../en/data/people.yml
-    - contributors: ../en/data/contributors.yml
-    - translators: ../en/data/translators.yml
-    - translation_reviewers: ../en/data/translation_reviewers.yml
-    - skip_users: ../en/data/skip_users.yml
-    - members: ../en/data/members.yml
-    - sponsors_badge: ../en/data/sponsors_badge.yml
-    - sponsors: ../en/data/sponsors.yml
-    - topic_repos: ../en/data/topic_repos.yml
-  redirects:
-    redirect_maps:
-      deployment/deta.md: deployment/cloud.md
-      advanced/graphql.md: how-to/graphql.md
-      advanced/custom-request-and-route.md: how-to/custom-request-and-route.md
-      advanced/conditional-openapi.md: how-to/conditional-openapi.md
-      advanced/extending-openapi.md: how-to/extending-openapi.md
-      advanced/testing-database.md: how-to/testing-database.md
   mkdocstrings:
     handlers:
       python:
@@ -102,13 +77,13 @@ plugins:
 nav:
 - FastAPI: index.md
 - features.md
-- Learn:
+- "":
   - learn/index.md
   - python-types.md
   - async.md
   - environment-variables.md
   - virtual-environments.md
-  - Tutorial - User Guide:
+  - "":
     - tutorial/index.md
     - tutorial/first-steps.md
     - tutorial/path-params.md
@@ -137,14 +112,14 @@ nav:
     - tutorial/path-operation-configuration.md
     - tutorial/encoder.md
     - tutorial/body-updates.md
-    - Dependencies:
+    - "":
       - tutorial/dependencies/index.md
       - tutorial/dependencies/classes-as-dependencies.md
       - tutorial/dependencies/sub-dependencies.md
       - tutorial/dependencies/dependencies-in-path-operation-decorators.md
       - tutorial/dependencies/global-dependencies.md
       - tutorial/dependencies/dependencies-with-yield.md
-    - Security:
+    - "":
       - tutorial/security/index.md
       - tutorial/security/first-steps.md
       - tutorial/security/get-current-user.md
@@ -161,7 +136,7 @@ nav:
     - tutorial/static-files.md
     - tutorial/testing.md
     - tutorial/debugging.md
-  - Advanced User Guide:
+  - "":
     - advanced/index.md
     - advanced/stream-data.md
     - advanced/path-operation-advanced-configuration.md
@@ -173,7 +148,7 @@ nav:
     - advanced/response-headers.md
     - advanced/response-change-status-code.md
     - advanced/advanced-dependencies.md
-    - Advanced Security:
+    - "":
       - advanced/security/index.md
       - advanced/security/oauth2-scopes.md
       - advanced/security/http-basic-auth.md
@@ -199,7 +174,7 @@ nav:
     - advanced/strict-content-type.md
   - fastapi-cli.md
   - editor-support.md
-  - Deployment:
+  - "":
     - deployment/index.md
     - deployment/versions.md
     - deployment/fastapicloud.md
@@ -209,7 +184,7 @@ nav:
     - deployment/cloud.md
     - deployment/server-workers.md
     - deployment/docker.md
-  - How To - Recipes:
+  - "":
     - how-to/index.md
     - how-to/general.md
     - how-to/migrate-from-pydantic-v1-to-pydantic-v2.md
@@ -222,7 +197,7 @@ nav:
     - how-to/configure-swagger-ui.md
     - how-to/testing-database.md
     - how-to/authentication-error-status-code.md
-- Reference (Code API):
+- "":
   - reference/index.md
   - reference/fastapi.md
   - reference/parameters.md
@@ -238,7 +213,7 @@ nav:
   - reference/response.md
   - reference/responses.md
   - reference/middleware.md
-  - OpenAPI:
+  - "":
     - reference/openapi/index.md
     - reference/openapi/docs.md
     - reference/openapi/models.md
@@ -248,7 +223,7 @@ nav:
   - reference/templating.md
   - reference/testclient.md
 - fastapi-people.md
-- Resources:
+- "":
   - resources/index.md
   - help-fastapi.md
   - contributing.md
@@ -256,7 +231,7 @@ nav:
   - external-links.md
   - newsletter.md
   - management-tasks.md
-- About:
+- "":
   - about/index.md
   - alternatives.md
   - history-design-future.md
@@ -264,10 +239,7 @@ nav:
   - management.md
 - release-notes.md
 markdown_extensions:
-  material.extensions.preview:
-    targets:
-      include:
-      - '*'
+  zensical.extensions.macros: null
   abbr: null
   attr_list: null
   footnotes: null
@@ -312,16 +284,16 @@ markdown_extensions:
   markdown_include_variants: null
 extra:
   social:
-  - icon: fontawesome/brands/github-alt
+  - icon: octicons/mark-github-24
     link: https://github.com/fastapi/fastapi
   - icon: fontawesome/brands/discord
     link: https://discord.gg/VQjSZaeJmf
-  - icon: fontawesome/brands/twitter
+  - icon: fontawesome/brands/x-twitter
     link: https://x.com/fastapi
+  - icon: fontawesome/brands/bluesky
+    link: https://bsky.app/profile/fastapi.tiangolo.com
   - icon: fontawesome/brands/linkedin
     link: https://www.linkedin.com/company/fastapi
-  - icon: fontawesome/solid/globe
-    link: https://tiangolo.com
   alternate:
   - link: /
     name: en - English
@@ -354,5 +326,5 @@ extra_javascript:
 - js/termynal.js
 - js/custom.js
 - js/init_kapa_widget.js
-hooks:
-- ../../scripts/mkdocs_hooks.py
+validation:
+  unresolved_references: false
diff --git a/docs/en/overrides/partials/copyright.html b/docs/en/overrides/partials/copyright.html
index dcca89abe3..9c9b60f680 100644
--- a/docs/en/overrides/partials/copyright.html
+++ b/docs/en/overrides/partials/copyright.html
@@ -4,8 +4,8 @@
     </div>
     {% if not config.extra.generator == false %}
     Made with
-    <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
-        Material for MkDocs
+    <a href="https://zensical.org" target="_blank" rel="noopener">
+        Zensical
     </a>
     {% endif %}
 </div>
diff --git a/docs/es/docs/index.md b/docs/es/docs/index.md
index bcae23914a..1217c4c6fa 100644
--- a/docs/es/docs/index.md
+++ b/docs/es/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/es/mkdocs.yml b/docs/es/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/es/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/fr/docs/index.md b/docs/fr/docs/index.md
index a351071f07..4c5bea3e4c 100644
--- a/docs/fr/docs/index.md
+++ b/docs/fr/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/fr/mkdocs.yml b/docs/fr/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/fr/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/ja/docs/index.md b/docs/ja/docs/index.md
index 2068874eb2..ac4d1242ed 100644
--- a/docs/ja/docs/index.md
+++ b/docs/ja/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/ja/mkdocs.yml b/docs/ja/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/ja/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/ko/docs/index.md b/docs/ko/docs/index.md
index 719fae8219..0dd0bef59e 100644
--- a/docs/ko/docs/index.md
+++ b/docs/ko/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/ko/mkdocs.yml b/docs/ko/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/ko/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/pt/docs/index.md b/docs/pt/docs/index.md
index a982657d86..6f54cd6dc3 100644
--- a/docs/pt/docs/index.md
+++ b/docs/pt/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/pt/mkdocs.yml b/docs/pt/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/pt/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/ru/docs/index.md b/docs/ru/docs/index.md
index 10184990b2..015b9769ef 100644
--- a/docs/ru/docs/index.md
+++ b/docs/ru/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/ru/mkdocs.yml b/docs/ru/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/ru/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/tr/docs/index.md b/docs/tr/docs/index.md
index 4ad59fa0a9..f6101be0d3 100644
--- a/docs/tr/docs/index.md
+++ b/docs/tr/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/tr/mkdocs.yml b/docs/tr/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/tr/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/uk/docs/index.md b/docs/uk/docs/index.md
index 213cf8db4a..2b770ff399 100644
--- a/docs/uk/docs/index.md
+++ b/docs/uk/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/uk/mkdocs.yml b/docs/uk/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/uk/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/zh-hant/docs/index.md b/docs/zh-hant/docs/index.md
index 60122a74ed..09974e59dc 100644
--- a/docs/zh-hant/docs/index.md
+++ b/docs/zh-hant/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/zh-hant/mkdocs.yml b/docs/zh-hant/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/zh-hant/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/docs/zh/docs/index.md b/docs/zh/docs/index.md
index c1d1c1f9b3..f89d0a6531 100644
--- a/docs/zh/docs/index.md
+++ b/docs/zh/docs/index.md
@@ -1,3 +1,8 @@
+---
+include_yaml:
+  sponsors: data/sponsors.yml
+---
+
 # FastAPI { #fastapi }
 
 <style>
diff --git a/docs/zh/mkdocs.yml b/docs/zh/mkdocs.yml
deleted file mode 100644
index de18856f44..0000000000
--- a/docs/zh/mkdocs.yml
+++ /dev/null
@@ -1 +0,0 @@
-INHERIT: ../en/mkdocs.yml
diff --git a/pyproject.toml b/pyproject.toml
index 8b066c125e..4bac4757b4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -132,21 +132,17 @@ docs = [
     { include-group = "docs-tests" },
     "black >=25.1.0",
     "cairosvg >=2.8.2",
-    # for MkDocs live reload
-    "click==8.2.1",
     "griffe-typingdoc >=0.3.0",
     "griffe-warnings-deprecated >=1.1.0",
     "jieba >=0.42.1",
     "markdown-include-variants >=0.0.8",
     "mdx-include >=1.4.1,<2.0.0",
-    "mkdocs-macros-plugin >=1.5.0",
-    "mkdocs-material >=9.7.0",
-    "mkdocs-redirects >=1.2.1,<1.3.0",
-    "mkdocstrings[python] >=0.30.1",
+    "mkdocstrings[python] >=1.0.3",
     "pillow >=11.3.0",
     "python-slugify >=8.0.4",
     "pyyaml >=5.3.1,<7.0.0",
     "typer >=0.21.1",
+    "zensical >=0.0.42",
 ]
 docs-tests = [
     "httpx >=0.23.0,<1.0.0",
diff --git a/scripts/docs.py b/scripts/docs.py
index c36f976d5f..a273cab2f8 100644
--- a/scripts/docs.py
+++ b/scripts/docs.py
@@ -10,7 +10,6 @@ from multiprocessing import Pool
 from pathlib import Path
 from typing import Any
 
-import mkdocs.utils
 import typer
 import yaml
 from jinja2 import Template
@@ -39,10 +38,6 @@ app = typer.Typer()
 
 mkdocs_name = "mkdocs.yml"
 
-missing_translation_snippet = """
-{!../../docs/missing-translation.md!}
-"""
-
 non_translated_sections = (
     f"reference{os.sep}",
     "release-notes.md",
@@ -58,7 +53,7 @@ docs_path = Path("docs")
 en_docs_path = Path("docs/en")
 en_config_path: Path = en_docs_path / mkdocs_name
 site_path = Path("site").absolute()
-build_site_path = Path("site_build").absolute()
+zensical_src_path = Path("site_zensical_src").absolute()
 
 header_pattern = re.compile(r"^(#{1,6}) (.+?)(?:\s*\{\s*(#.*)\s*\})?\s*$")
 header_with_permalink_pattern = re.compile(r"^(#{1,6}) (.+?)(\s*\{\s*#.*\s*\})\s*$")
@@ -105,7 +100,7 @@ def slugify(text: str) -> str:
 
 
 def get_en_config() -> dict[str, Any]:
-    return mkdocs.utils.yaml_load(en_config_path.read_text(encoding="utf-8"))
+    return yaml.unsafe_load(en_config_path.read_text(encoding="utf-8"))
 
 
 def get_lang_paths() -> list[Path]:
@@ -142,8 +137,6 @@ def new_lang(lang: str = typer.Argument(..., callback=lang_callback)):
         typer.echo(f"The language was already created: {lang}")
         raise typer.Abort()
     new_path.mkdir()
-    new_config_path: Path = Path(new_path) / mkdocs_name
-    new_config_path.write_text("INHERIT: ../en/mkdocs.yml\n", encoding="utf-8")
     new_llm_prompt_path: Path = new_path / "llm-prompt.md"
     new_llm_prompt_path.write_text("", encoding="utf-8")
     print(f"Successfully initialized: {new_path}")
@@ -159,29 +152,158 @@ def build_lang(
     """
     Build the docs for a language.
     """
-    lang_path: Path = Path("docs") / lang
-    if not lang_path.is_dir():
+    build_zensical_lang_to_stage(lang)
+    copy_zensical_stage_to_site(lang)
+    typer.secho(f"Successfully built docs for: {lang}", color=typer.colors.GREEN)
+
+
+def split_markdown_header(markdown: str) -> tuple[str, str]:
+    prefix = ""
+    if markdown.startswith("---\n"):
+        front_matter_end = markdown.find("\n---\n", 4)
+        if front_matter_end != -1:
+            front_matter_end += len("\n---\n")
+            prefix = markdown[:front_matter_end]
+            markdown = markdown[front_matter_end:]
+    if markdown.startswith("#"):
+        header, separator, body = markdown.partition("\n\n")
+        if separator:
+            return f"{prefix}{header}", body
+    if prefix:
+        return prefix.rstrip("\n"), markdown
+    return "", markdown
+
+
+def add_markdown_notice(markdown: str, notice: str) -> str:
+    header, body = split_markdown_header(markdown)
+    if header:
+        return f"{header}\n\n{notice}\n\n{body}"
+    return f"{notice}\n\n{body}"
+
+
+def is_non_translated_path(path: Path) -> bool:
+    src_path = path.as_posix()
+    return any(src_path.startswith(section) for section in non_translated_sections)
+
+
+def get_en_url(path: Path) -> str:
+    url_path = path.with_suffix("").as_posix()
+    if url_path.endswith("/index"):
+        url_path = url_path.removesuffix("index")
+    elif url_path != "index":
+        url_path = f"{url_path}/"
+    else:
+        url_path = ""
+    return f"https://fastapi.tiangolo.com/{url_path}"
+
+
+def get_zensical_theme_language(lang: str) -> str:
+    if lang == "zh-hant":
+        return "zh-Hant"
+    return lang
+
+
+def stage_zensical_docs(lang: str) -> Path:
+    lang_docs_path = docs_path / lang / "docs"
+    if not lang_docs_path.is_dir():
         typer.echo(f"The language translation doesn't seem to exist yet: {lang}")
         raise typer.Abort()
-    typer.echo(f"Building docs for: {lang}")
-    build_site_dist_path = build_site_path / lang
+
+    en_docs_source_path = en_docs_path / "docs"
+    staged_docs_src_path = zensical_src_path / "docs_src"
+    if not staged_docs_src_path.exists():
+        shutil.copytree(Path("docs_src"), staged_docs_src_path, dirs_exist_ok=True)
+    lang_stage_path = zensical_src_path / lang
+    staged_docs_path = lang_stage_path / "content"
+    shutil.rmtree(lang_stage_path, ignore_errors=True)
+    shutil.copytree(en_docs_source_path, staged_docs_path)
+
+    missing_translation = (docs_path / "missing-translation.md").read_text(
+        encoding="utf-8"
+    )
+    translation_banner_path = lang_docs_path / "translation-banner.md"
+    if not translation_banner_path.is_file():
+        translation_banner_path = en_docs_source_path / "translation-banner.md"
+    translation_banner = translation_banner_path.read_text(encoding="utf-8")
+
+    if lang != "en":
+        for staged_file in staged_docs_path.rglob("*.md"):
+            relative_path = staged_file.relative_to(staged_docs_path)
+            translated_file = lang_docs_path / relative_path
+            if translated_file.is_file():
+                markdown = translated_file.read_text(encoding="utf-8")
+                if relative_path.name == "translation-banner.md":
+                    staged_file.write_text(markdown, encoding="utf-8")
+                    continue
+                en_url = get_en_url(relative_path)
+                banner = translation_banner.replace("ENGLISH_VERSION_URL", en_url)
+                staged_file.write_text(
+                    add_markdown_notice(markdown, banner), encoding="utf-8"
+                )
+            elif not is_non_translated_path(relative_path):
+                markdown = staged_file.read_text(encoding="utf-8")
+                staged_file.write_text(
+                    add_markdown_notice(markdown, missing_translation),
+                    encoding="utf-8",
+                )
+
+    shutil.copytree(en_docs_path / "data", lang_stage_path / "data")
+    shutil.copytree(en_docs_path / "overrides", lang_stage_path / "overrides")
+
+    config = get_updated_config_content()
+    config["docs_dir"] = "content"
+    config["site_dir"] = "site"
+    if lang == "en":
+        config["site_url"] = "https://fastapi.tiangolo.com/"
+    else:
+        config["site_url"] = f"https://fastapi.tiangolo.com/{lang}/"
+    config.setdefault("theme", {})
+    config["theme"]["language"] = get_zensical_theme_language(lang)
+    if lang != "en":
+        # The root English build owns shared static assets; translated builds should
+        # reference those root paths instead of emitting language-local copies.
+        if "logo" in config["theme"]:
+            config["theme"]["logo"] = "/" + config["theme"]["logo"].lstrip("/")
+        if "favicon" in config["theme"]:
+            config["theme"]["favicon"] = "/" + config["theme"]["favicon"].lstrip("/")
+        config["extra_css"] = ["/" + path.lstrip("/") for path in config["extra_css"]]
+        config["extra_javascript"] = [
+            "/" + path.lstrip("/") for path in config["extra_javascript"]
+        ]
+    config_path = lang_stage_path / mkdocs_name
+    config_path.write_text(
+        yaml.dump(config, sort_keys=False, width=200, allow_unicode=True),
+        encoding="utf-8",
+    )
+    return config_path
+
+
+def build_zensical_config(config_path: Path) -> None:
+    subprocess.run(
+        ["zensical", "build", "--config-file", config_path.name],
+        check=True,
+        cwd=config_path.parent,
+    )
+
+
+def build_zensical_lang_to_stage(lang: str) -> Path:
+    typer.echo(f"Building Zensical docs for: {lang}")
+    config_path = stage_zensical_docs(lang)
+    config = yaml.unsafe_load(config_path.read_text(encoding="utf-8"))
+    build_site_dist_path = config_path.parent / config["site_dir"]
+    shutil.rmtree(build_site_dist_path, ignore_errors=True)
+    build_zensical_config(config_path)
+    return build_site_dist_path
+
+
+def copy_zensical_stage_to_site(lang: str) -> None:
+    build_site_dist_path = zensical_src_path / lang / "site"
     if lang == "en":
         dist_path = site_path
-        # Don't remove en dist_path as it might already contain other languages.
-        # When running build_all(), that function already removes site_path.
-        # All this is only relevant locally, on GitHub Actions all this is done through
-        # artifacts and multiple workflows, so it doesn't matter if directories are
-        # removed or not.
     else:
         dist_path = site_path / lang
         shutil.rmtree(dist_path, ignore_errors=True)
-    current_dir = os.getcwd()
-    os.chdir(lang_path)
-    shutil.rmtree(build_site_dist_path, ignore_errors=True)
-    subprocess.run(["mkdocs", "build", "--site-dir", build_site_dist_path], check=True)
     shutil.copytree(build_site_dist_path, dist_path, dirs_exist_ok=True)
-    os.chdir(current_dir)
-    typer.secho(f"Successfully built docs for: {lang}", color=typer.colors.GREEN)
 
 
 index_sponsors_template = """
@@ -223,7 +345,7 @@ def generate_readme_content() -> str:
     match_start = re.search(r"<!-- sponsors -->", content)
     match_end = re.search(r"<!-- /sponsors -->", content)
     sponsors_data_path = en_docs_path / "data" / "sponsors.yml"
-    sponsors = mkdocs.utils.yaml_load(sponsors_data_path.read_text(encoding="utf-8"))
+    sponsors = yaml.safe_load(sponsors_data_path.read_text(encoding="utf-8"))
     if not (match_start and match_end):
         raise RuntimeError("Couldn't auto-generate sponsors section")
     if not match_pre:
@@ -265,27 +387,33 @@ def generate_readme() -> None:
 @app.command()
 def build_all() -> None:
     """
-    Build mkdocs site for en, and then build each language inside, end result is located
-    at directory ./site/ with each language inside.
+    Build the full translated docs site into ./site/.
     """
     update_languages()
     shutil.rmtree(site_path, ignore_errors=True)
+    shutil.rmtree(zensical_src_path, ignore_errors=True)
+    shutil.copytree(Path("docs_src"), zensical_src_path / "docs_src")
     langs = [
         lang.name
         for lang in get_lang_paths()
         if (lang.is_dir() and lang.name in SUPPORTED_LANGS)
     ]
-    cpu_count = os.cpu_count() or 1
-    process_pool_size = cpu_count * 4
+    process_pool_size = min(4, len(langs), os.cpu_count() or 1)
     typer.echo(f"Using process pool size: {process_pool_size}")
     with Pool(process_pool_size) as p:
-        p.map(build_lang, langs)
+        p.map(build_zensical_lang_to_stage, langs)
+    if "en" in langs:
+        copy_zensical_stage_to_site("en")
+    for lang in langs:
+        if lang != "en":
+            copy_zensical_stage_to_site(lang)
+    typer.secho("Successfully built all docs", color=typer.colors.GREEN)
 
 
 @app.command()
 def update_languages() -> None:
     """
-    Update the mkdocs.yml file Languages section including all the available languages.
+    Update the docs config Languages section including all the available languages.
     """
     old_config = get_en_config()
     updated_config = get_updated_config_content()
@@ -305,7 +433,7 @@ def serve() -> None:
     """
     A quick server to preview a built site with translations.
 
-    For development, prefer the command live (or just mkdocs serve).
+    For development, prefer the command live.
 
     This is here only to preview a site with translations already built.
 
@@ -323,31 +451,21 @@ def serve() -> None:
 
 
 @app.command()
-def live(
-    lang: str = typer.Argument(
-        None, callback=lang_callback, autocompletion=complete_existing_lang
-    ),
-    dirty: bool = False,
-) -> None:
+def live() -> None:
     """
-    Serve with livereload a docs site for a specific language.
-
-    This only shows the actual translated files, not the placeholders created with
-    build-all.
-
-    Takes an optional LANG argument with the name of the language to serve, by default
-    en.
+    Serve the English docs with livereload from the source files.
     """
-    # Enable line numbers during local development to make it easier to highlight
-    if lang is None:
-        lang = "en"
-    lang_path: Path = docs_path / lang
-    # Enable line numbers during local development to make it easier to highlight
-    args = ["mkdocs", "serve", "--dev-addr", "127.0.0.1:8008"]
-    if dirty:
-        args.append("--dirty")
     subprocess.run(
-        args, env={**os.environ, "LINENUMS": "true"}, cwd=lang_path, check=True
+        [
+            "zensical",
+            "serve",
+            "--config-file",
+            mkdocs_name,
+            "--dev-addr",
+            "127.0.0.1:8008",
+        ],
+        cwd=en_docs_path,
+        check=True,
     )
 
 
@@ -358,7 +476,7 @@ def get_updated_config_content() -> dict[str, Any]:
     # Language names sourced from https://quickref.me/iso-639-1
     # Contributors may wish to update or change these, e.g. to fix capitalization.
     language_names_path = Path(__file__).parent / "../docs/language_names.yml"
-    local_language_names: dict[str, str] = mkdocs.utils.yaml_load(
+    local_language_names: dict[str, str] = yaml.safe_load(
         language_names_path.read_text(encoding="utf-8")
     )
     for lang_path in get_lang_paths():
diff --git a/scripts/mkdocs_hooks.py b/scripts/mkdocs_hooks.py
deleted file mode 100644
index 97006953d6..0000000000
--- a/scripts/mkdocs_hooks.py
+++ /dev/null
@@ -1,182 +0,0 @@
-from functools import lru_cache
-from pathlib import Path
-from typing import Any
-
-import material
-from mkdocs.config.defaults import MkDocsConfig
-from mkdocs.structure.files import File, Files
-from mkdocs.structure.nav import Link, Navigation, Section
-from mkdocs.structure.pages import Page
-
-non_translated_sections = [
-    "reference/",
-    "release-notes.md",
-    "fastapi-people.md",
-    "external-links.md",
-    "newsletter.md",
-    "management-tasks.md",
-    "management.md",
-]
-
-
-@lru_cache
-def get_missing_translation_content(docs_dir: str) -> str:
-    docs_dir_path = Path(docs_dir)
-    missing_translation_path = docs_dir_path.parent.parent / "missing-translation.md"
-    return missing_translation_path.read_text(encoding="utf-8")
-
-
-@lru_cache
-def get_translation_banner_content(docs_dir: str) -> str:
-    docs_dir_path = Path(docs_dir)
-    translation_banner_path = docs_dir_path / "translation-banner.md"
-    if not translation_banner_path.is_file():
-        translation_banner_path = (
-            docs_dir_path.parent.parent / "en" / "docs" / "translation-banner.md"
-        )
-    return translation_banner_path.read_text(encoding="utf-8")
-
-
-@lru_cache
-def get_mkdocs_material_langs() -> list[str]:
-    material_path = Path(material.__file__).parent
-    material_langs_path = material_path / "templates" / "partials" / "languages"
-    langs = [file.stem for file in material_langs_path.glob("*.html")]
-    return langs
-
-
-class EnFile(File):
-    pass
-
-
-def on_config(config: MkDocsConfig, **kwargs: Any) -> MkDocsConfig:
-    available_langs = get_mkdocs_material_langs()
-    dir_path = Path(config.docs_dir)
-    lang = dir_path.parent.name
-    if lang in available_langs:
-        config.theme["language"] = lang
-    if not (config.site_url or "").endswith(f"{lang}/") and lang != "en":
-        config.site_url = f"{config.site_url}{lang}/"
-    return config
-
-
-def resolve_file(*, item: str, files: Files, config: MkDocsConfig) -> None:
-    item_path = Path(config.docs_dir) / item
-    if not item_path.is_file():
-        en_src_dir = (Path(config.docs_dir) / "../../en/docs").resolve()
-        potential_path = en_src_dir / item
-        if potential_path.is_file():
-            files.append(
-                EnFile(
-                    path=item,
-                    src_dir=str(en_src_dir),
-                    dest_dir=config.site_dir,
-                    use_directory_urls=config.use_directory_urls,
-                )
-            )
-
-
-def resolve_files(*, items: list[Any], files: Files, config: MkDocsConfig) -> None:
-    for item in items:
-        if isinstance(item, str):
-            resolve_file(item=item, files=files, config=config)
-        elif isinstance(item, dict):
-            assert len(item) == 1
-            values = list(item.values())
-            if not values:
-                continue
-            if isinstance(values[0], str):
-                resolve_file(item=values[0], files=files, config=config)
-            elif isinstance(values[0], list):
-                resolve_files(items=values[0], files=files, config=config)
-            else:
-                raise ValueError(f"Unexpected value: {values}")
-
-
-def on_files(files: Files, *, config: MkDocsConfig) -> Files:
-    resolve_files(items=config.nav or [], files=files, config=config)
-    if "logo" in config.theme:
-        resolve_file(item=config.theme["logo"], files=files, config=config)
-    if "favicon" in config.theme:
-        resolve_file(item=config.theme["favicon"], files=files, config=config)
-    resolve_files(items=config.extra_css, files=files, config=config)
-    resolve_files(items=config.extra_javascript, files=files, config=config)
-    return files
-
-
-def generate_renamed_section_items(
-    items: list[Page | Section | Link], *, config: MkDocsConfig
-) -> list[Page | Section | Link]:
-    new_items: list[Page | Section | Link] = []
-    for item in items:
-        if isinstance(item, Section):
-            new_title = item.title
-            new_children = generate_renamed_section_items(item.children, config=config)
-            first_child = new_children[0]
-            if isinstance(first_child, Page):
-                if first_child.file.src_path.endswith("index.md"):
-                    # Read the source so that the title is parsed and available
-                    first_child.read_source(config=config)
-                    new_title = first_child.title or new_title
-            # Creating a new section makes it render it collapsed by default
-            # no idea why, so, let's just modify the existing one
-            # new_section = Section(title=new_title, children=new_children)
-            item.title = new_title.split("{ #")[0]
-            item.children = new_children
-            new_items.append(item)
-        else:
-            new_items.append(item)
-    return new_items
-
-
-def on_nav(
-    nav: Navigation, *, config: MkDocsConfig, files: Files, **kwargs: Any
-) -> Navigation:
-    new_items = generate_renamed_section_items(nav.items, config=config)
-    return Navigation(items=new_items, pages=nav.pages)
-
-
-def on_pre_page(page: Page, *, config: MkDocsConfig, files: Files) -> Page:
-    return page
-
-
-def on_page_markdown(
-    markdown: str, *, page: Page, config: MkDocsConfig, files: Files
-) -> str:
-    # Set metadata["social"]["cards_layout_options"]["title"] to clean title (without
-    # permalink)
-    title = page.title
-    clean_title = title.split("{ #")[0]
-    if clean_title:
-        page.meta.setdefault("social", {})
-        page.meta["social"].setdefault("cards_layout_options", {})
-        page.meta["social"]["cards_layout_options"]["title"] = clean_title
-
-    if isinstance(page.file, EnFile):
-        for excluded_section in non_translated_sections:
-            if page.file.src_path.startswith(excluded_section):
-                return markdown
-        missing_translation_content = get_missing_translation_content(config.docs_dir)
-        header = ""
-        body = markdown
-        if markdown.startswith("#"):
-            header, _, body = markdown.partition("\n\n")
-        return f"{header}\n\n{missing_translation_content}\n\n{body}"
-
-    docs_dir_path = Path(config.docs_dir)
-    en_docs_dir_path = docs_dir_path.parent.parent / "en/docs"
-
-    if docs_dir_path == en_docs_dir_path:
-        return markdown
-
-    # For translated pages add translation banner
-    translation_banner_content = get_translation_banner_content(config.docs_dir)
-    en_url = "https://fastapi.tiangolo.com/" + page.url.lstrip("/")
-    translation_banner_content = translation_banner_content.replace(
-        "ENGLISH_VERSION_URL", en_url
-    )
-    header = ""
-    body = markdown
-    if markdown.startswith("#"):
-        header, _, body = markdown.partition("\n\n")
-    return f"{header}\n\n{translation_banner_content}\n\n{body}"
diff --git a/uv.lock b/uv.lock
index 72407ae03d..effcdba998 100644
--- a/uv.lock
+++ b/uv.lock
@@ -336,15 +336,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/57/2f/55fca558f925a51db046e5b929deb317ddb05afed74b22d89f4eca578980/authlib-1.6.11-py2.py3-none-any.whl", hash = "sha256:c8687a9a26451c51a34a06fa17bb97cb15bba46a6a626755e2d7f50da8bff3e3", size = 244469, upload-time = "2026-04-16T07:22:48.413Z" },
 ]
 
-[[package]]
-name = "babel"
-version = "2.18.0"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/7d/b2/51899539b6ceeeb420d40ed3cd4b7a40519404f9baf3d4ac99dc413a834b/babel-2.18.0.tar.gz", hash = "sha256:b80b99a14bd085fcacfa15c9165f651fbb3406e66cc603abf11c5750937c992d", size = 9959554, upload-time = "2026-02-01T12:30:56.078Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/77/f5/21d2de20e8b8b0408f0681956ca2c69f1320a3848ac50e6e7f39c6159675/babel-2.18.0-py3-none-any.whl", hash = "sha256:e2b422b277c2b9a9630c1d7903c2a00d0830c409c59ac8cae9081c92f1aeba35", size = 10196845, upload-time = "2026-02-01T12:30:53.445Z" },
-]
-
 [[package]]
 name = "backports-tarfile"
 version = "1.2.0"
@@ -354,20 +345,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/b9/fa/123043af240e49752f1c4bd24da5053b6bd00cad78c2be53c0d1e8b975bc/backports.tarfile-1.2.0-py3-none-any.whl", hash = "sha256:77e284d754527b01fb1e6fa8a1afe577858ebe4e9dad8919e34c862cb399bc34", size = 30181, upload-time = "2024-05-28T17:01:53.112Z" },
 ]
 
-[[package]]
-name = "backrefs"
-version = "6.1"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/86/e3/bb3a439d5cb255c4774724810ad8073830fac9c9dee123555820c1bcc806/backrefs-6.1.tar.gz", hash = "sha256:3bba1749aafe1db9b915f00e0dd166cba613b6f788ffd63060ac3485dc9be231", size = 7011962, upload-time = "2025-11-15T14:52:08.323Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/3b/ee/c216d52f58ea75b5e1841022bbae24438b19834a29b163cb32aa3a2a7c6e/backrefs-6.1-py310-none-any.whl", hash = "sha256:2a2ccb96302337ce61ee4717ceacfbf26ba4efb1d55af86564b8bbaeda39cac1", size = 381059, upload-time = "2025-11-15T14:51:59.758Z" },
-    { url = "https://files.pythonhosted.org/packages/e6/9a/8da246d988ded941da96c7ed945d63e94a445637eaad985a0ed88787cb89/backrefs-6.1-py311-none-any.whl", hash = "sha256:e82bba3875ee4430f4de4b6db19429a27275d95a5f3773c57e9e18abc23fd2b7", size = 392854, upload-time = "2025-11-15T14:52:01.194Z" },
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