diff --git a/.github/workflows/sync.yaml b/.github/workflows/sync.yaml
index 6aee0aa..3812b14 100644
--- a/.github/workflows/sync.yaml
+++ b/.github/workflows/sync.yaml
@@ -6,7 +6,7 @@ on:
   workflow_dispatch:
   pull_request:
     paths:
-      - src/scverse_doc/theme/scverse/static/_tokens.css
+      - src/scverse_doc/theme/scverse/static/styles/_tokens.css
       - src/scverse_doc/theme/scverse/static/scverse-fa.svg
       - scripts/**
 
diff --git a/.gitignore b/.gitignore
index da69f80..12729b1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,8 @@ __pycache__/
 
 # Distribution / packaging
 /dist/
+# Built by hatch_build.py
+*.min.css*
 
 # Tests and coverage
 /data/
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 45ab2ba..14159ab 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,6 +12,8 @@ repos:
       - id: biome-format
         exclude: ^\.cruft\.json$ # inconsistent indentation with cruft - file never to be modified manually.
         groups: [format]
+      - id: biome-lint
+        args: [--error-on-warnings]
   - repo: https://github.com/tox-dev/pyproject-fmt
     rev: v2.30.3
     hooks:
@@ -21,6 +23,7 @@ repos:
     rev: v1.46.6
     hooks:
       - id: djlint-reformat
+        groups: [format]
       - id: djlint
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.17.1
diff --git a/biome.jsonc b/biome.jsonc
index a130bbe..d7adb9e 100644
--- a/biome.jsonc
+++ b/biome.jsonc
@@ -7,7 +7,7 @@
             "**",
             "!src/scverse_doc/registry.json",
             "!src/scverse_doc/_accents.json",
-            "!src/scverse_doc/theme/scverse/static/_tokens.css",
+            "!src/scverse_doc/theme/scverse/static/styles/_tokens.css",
         ],
     },
     "formatter": { "useEditorconfig": true },
diff --git a/docs/contributing.md b/docs/contributing.md
index 44c3b03..77b6a02 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -341,8 +341,9 @@ sphinx-build -M html . _build -W
 
 ### Changing the theme
 
-The theme lives in `src/scverse_doc/theme/scverse`: brand tokens in `static/_tokens.css`,
+The theme lives in `src/scverse_doc/theme/scverse`: brand tokens in `static/styles/_tokens.css`,
 component styling in `static/styles/scverse.css`, and the sidebar, header and footer parts in `components/`.
+On package build or docs build, `scverse.css` is bundled into a minified `scverse.min.css` with its imports inlined.
 
 After a change, build the docs and check {doc}`kitchen-sink` – it renders every construct the theme
 styles – in both colour schemes, using the theme switcher in the page header.
diff --git a/hatch_build.py b/hatch_build.py
new file mode 100644
index 0000000..5b97fcd
--- /dev/null
+++ b/hatch_build.py
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: MPL-2.0
+"""Build the theme’s ``styles/*.min.css``, see ``scverse_doc.theme._bundle``."""
+
+from __future__ import annotations
+
+import runpy
+from pathlib import Path
+from typing import Any
+
+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+
+
+class CSSBundleHook(BuildHookInterface):  # type: ignore[type-arg]
+    """Bundle the theme stylesheets."""
+
+    def initialize(self, version: str, build_data: dict[str, Any]) -> None:  # noqa: D102
+        # By path, as the package isn’t installed yet.
+        mod = runpy.run_path(str(Path(self.root) / "src/scverse_doc/theme/_bundle.py"))
+        if (exe := mod["find_lightningcss"]()) is None:
+            msg = "lightningcss binary not found"
+            raise RuntimeError(msg)
+        mod["bundle"](exe)
diff --git a/pyproject.toml b/pyproject.toml
index fb84c60..f7fe185 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [build-system]
 build-backend = "hatchling.build"
-requires = [ "hatch-fancy-pypi-readme", "hatch-vcs", "hatchling" ]
+requires = [ "hatch-fancy-pypi-readme", "hatch-vcs", "hatchling", "lightningcss-cli" ]
 
 [project]
 name = "scverse-doc"
@@ -50,16 +50,18 @@ dev = [
   "twine>=4.0.2",
 ]
 test = [
-  "coloraide",      # to check the accent lightness bounds
+  "coloraide",        # to check the accent lightness bounds
   "coverage>=7.10",
-  "defusedxml",     # for sphinx.testing’s HTML assertions
+  "defusedxml",       # for sphinx.testing’s HTML assertions
+  "lightningcss-cli", # to rebuild the theme’s stylesheet bundles
   "pytest",
-  "pytest-cov",     # For VS Code’s coverage functionality
-  "wenmode",        # for scripts/check_changelog.py
+  "pytest-cov",       # For VS Code’s coverage functionality
+  "wenmode",          # for scripts/check_changelog.py
 ]
 doc = [
   "ipykernel",
   "ipython",
+  "lightningcss-cli",            # to rebuild the theme’s stylesheet bundles
   "scverse-misc[sphinx]>=0.1.2",
   "sphinx-autodoc-typehints",
   "sphinxcontrib-bibtex>=1",
@@ -72,6 +74,10 @@ metadata.hooks.fancy-pypi-readme.content-type = "text/markdown"
 metadata.hooks.fancy-pypi-readme.fragments = [
   { path = "README.md", start-after = "<!-- badges-end -->\n" },
 ]
+build.targets.wheel.exclude = [ "/src/scverse_doc/theme/scverse/static/styles/" ]
+build.targets.wheel.artifacts = [ "/src/scverse_doc/theme/scverse/static/styles/*.min.css*" ]
+# Builds `styles/*.min.css`, which replace the stylesheet sources in wheels, see `hatch_build.py`.
+build.targets.wheel.hooks.custom = {}
 build.targets.sdist.exclude = [ "/docs", "/tests" ]
 envs.default.installer = "uv"
 envs.default.dependency-groups = [ "dev" ]
@@ -85,7 +91,7 @@ envs.hatch-check-code.scripts.lint-check = "echo 'try `hatch check code --fix`';
 envs.hatch-check-code.scripts.lint-fix = "prek run -a --no-group=format --no-group=typecheck"
 envs.hatch-check-fmt.dependencies = [ "prek" ]
 envs.hatch-check-fmt.scripts.format-check = "echo 'try `hatch check fmt --fix`'; false"
-envs.hatch-check-fmt.scripts.format-fix = "prek run -a --group=format --no-group=typecheck"
+envs.hatch-check-fmt.scripts.format-fix = "prek run -a --group=format"
 envs.hatch-check-types.features = [ "full" ]
 envs.hatch-check-types.scripts.check = [ "mypy" ]
 envs.hatch-check-types.dependency-groups = [ "typecheck", "doc", "test" ]
diff --git a/scripts/sync_brand_tokens.py b/scripts/sync_brand_tokens.py
index b7ab50e..6f80cad 100755
--- a/scripts/sync_brand_tokens.py
+++ b/scripts/sync_brand_tokens.py
@@ -35,7 +35,7 @@
 
 HERE = Path(__file__).parent
 STATIC = HERE.parent / "src" / "scverse_doc" / "theme" / "scverse" / "static"
-TARGET = STATIC / "_tokens.css"
+TARGET = STATIC / "styles" / "_tokens.css"
 
 #: Website file -> package file, copied verbatim.
 ASSETS = {
diff --git a/src/scverse_doc/theme/__init__.py b/src/scverse_doc/theme/__init__.py
index 76b177d..728998e 100644
--- a/src/scverse_doc/theme/__init__.py
+++ b/src/scverse_doc/theme/__init__.py
@@ -17,6 +17,7 @@
 from sphinx.util.typing import ExtensionMetadata
 
 from ..registry import DEFAULT_ACCENT, _build_cache, packages
+from ._bundle import bundle, find_lightningcss
 
 if TYPE_CHECKING:
     from sphinx.application import Sphinx
@@ -102,6 +103,9 @@ def _configure(app: Sphinx) -> None:
         return
 
     _add_chrome(config)
+    # In source trees, rebuild the stylesheet bundles so edits show without reinstalling.
+    if exe := find_lightningcss():
+        bundle(exe)
 
     css = _ACCENT_CSS.format(accent=_accent(config))
     if secondary := _secondary_accent(config):
diff --git a/src/scverse_doc/theme/_bundle.py b/src/scverse_doc/theme/_bundle.py
new file mode 100644
index 0000000..1a6f7cf
--- /dev/null
+++ b/src/scverse_doc/theme/_bundle.py
@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: MPL-2.0
+"""Bundle the theme stylesheets into minified ``*.min.css``, saving browsers a request per `@import`.
+
+Stdlib only: ``hatch_build.py`` runs this before the package is installed.
+"""
+
+from __future__ import annotations
+
+import shutil
+import subprocess
+import sysconfig
+from pathlib import Path
+
+STYLES = Path(__file__).parent / "scverse" / "static" / "styles"
+
+
+def find_lightningcss() -> str | None:
+    """Find the binary `lightningcss-cli` installs into the env, which needn’t be on $PATH."""
+    return shutil.which("lightningcss", path=sysconfig.get_path("scripts"))
+
+
+def bundle(exe: str) -> None:
+    """Bundle each ``styles/*.css`` into ``*.min.css`` next to it; ``_*.css`` partials are only imported.
+
+    Each bundle gets a ``*.min.css.map`` source map, which embeds the sources.
+    Wheels ship no sources, so this is a no-op outside of source trees.
+    """
+    for src in STYLES.glob("[!_]*.css"):
+        if not src.name.endswith(".min.css"):
+            # No --targets, so modern syntax like light-dark() passes through untouched.
+            # Relative paths in STYLES, as the CLI writes them into the source map and its URL as given.
+            args = ["--bundle", "--minify", "--sourcemap", src.name, "-o", src.with_suffix(".min.css").name]
+            subprocess.run([exe, *args], cwd=STYLES, check=True)
diff --git a/src/scverse_doc/theme/scverse/components/toggle-secondary-sidebar.html b/src/scverse_doc/theme/scverse/components/toggle-secondary-sidebar.html
index a9b8480..2bf174b 100644
--- a/src/scverse_doc/theme/scverse/components/toggle-secondary-sidebar.html
+++ b/src/scverse_doc/theme/scverse/components/toggle-secondary-sidebar.html
@@ -1,7 +1,7 @@
 {#- Opens the secondary sidebar drawer on narrow screens; pydata only renders its own in the (empty) navbar.
 
     Unconditional: pydata decides whether a page has a secondary sidebar only after it has dropped
-    the header templates that render empty. scverse.css hides the button on pages without one.
+    the header templates that render empty. styles/_pydata.css hides the button on pages without one.
 -#}
 <button
   type="button"
diff --git a/src/scverse_doc/theme/scverse/static/styles/_pydata.css b/src/scverse_doc/theme/scverse/static/styles/_pydata.css
new file mode 100644
index 0000000..de25577
--- /dev/null
+++ b/src/scverse_doc/theme/scverse/static/styles/_pydata.css
@@ -0,0 +1,140 @@
+/*
+ * Workarounds for pydata-sphinx-theme, kept apart from the scverse styling so they can be upstreamed.
+ * Nothing in here uses scverse tokens.
+ */
+
+/* --- Header ------------------------------------------------------------- */
+
+.bd-header-article {
+    /* pydata pushes __end right with margin-left: auto, but never makes this a flex container */
+    .header-article-items,
+    .header-article-items__start,
+    .header-article-items__end,
+    .header-article-item {
+        display: flex;
+        align-items: center;
+        gap: 0.5rem;
+    }
+
+    /* Bootstrap’s list margin would push them off-centre */
+    ul.bd-breadcrumbs {
+        margin: 0;
+    }
+
+    /* Space the icon links like the buttons beside them */
+    ul.navbar-icon-links {
+        column-gap: 0.5rem;
+    }
+
+    /* On narrow screens, wrap the breadcrumbs instead of the buttons */
+    .header-article-items__start {
+        min-width: 0;
+    }
+    .header-article-items__end {
+        flex-shrink: 0;
+    }
+
+    /* pydata only styles these inside .bd-header */
+    button.sidebar-toggle {
+        font-size: var(--pst-font-size-icon);
+        color: var(--pst-color-text-muted);
+        background-color: inherit;
+        border: none;
+        padding: 0.5rem;
+    }
+    /* pydata’s $breakpoint-sidebar-primary (lg) and $breakpoint-sidebar-secondary (xl) */
+    @media (min-width: 960px) {
+        button.primary-toggle {
+            display: none;
+        }
+    }
+    @media (min-width: 1200px) {
+        button.secondary-toggle {
+            display: none;
+        }
+    }
+}
+
+/* The navbar is empty unless a `navbar_*` option fills it (see theme.toml).
+ * Then drop it, let the sidebars stick to the top of the viewport,
+ * and make the article header sticky like sphinx-book-theme’s, since it holds the controls instead. */
+html:not(:has(.bd-header__inner)) {
+    --pst-header-height: 0px;
+    /* pydata derives these from the header height */
+    --pst-header-article-height: calc(4rem * 2 / 3);
+    scroll-padding-top: calc(var(--pst-header-article-height) + 1rem);
+
+    .bd-header {
+        display: none;
+    }
+
+    /* pydata sizes the logo by the header height */
+    .navbar-brand {
+        --pst-header-height: auto;
+    }
+
+    /* pydata’s overflow-x would make this the sticky header’s scroll container;
+     * min-width keeps wide content from pushing off the secondary sidebar instead. */
+    .bd-main .bd-content .bd-article-container {
+        overflow-x: unset;
+        min-width: 0;
+    }
+
+    .bd-header-article {
+        position: sticky;
+        top: 0;
+        z-index: 1020; /* Bootstrap’s $zindex-sticky */
+        background-color: var(--pst-color-background);
+        /* Span the article container’s padding, so content doesn’t peek out beside it */
+        margin: -1rem -1rem 0;
+        padding-inline: 1rem;
+        /* pydata’s navbar shadow, horizontally shrunk so it only extends downwards */
+        box-shadow: -0.125rem 0.25rem 0.25rem -0.125rem var(--pst-color-shadow);
+    }
+    /* Where supported, only once the page is scrolled */
+    @supports (animation-timeline: scroll()) {
+        .bd-header-article {
+            animation: scverse-header-shadow linear both;
+            animation-timeline: scroll();
+            animation-range: 0 1rem;
+        }
+    }
+}
+@keyframes scverse-header-shadow {
+    from {
+        box-shadow: none;
+    }
+}
+/* A filled navbar has pydata’s own sidebar toggles. Its JS only binds the first .primary-toggle/.secondary-toggle,
+ * so the ones from our toggle-*-sidebar.html components further down would do nothing. */
+html:has(.bd-header__inner) .bd-header-article button.sidebar-toggle {
+    display: none;
+}
+.bd-main:not(:has(#pst-secondary-sidebar)) button.secondary-toggle {
+    display: none;
+}
+
+/* Bootstrap’s dropdown link colours, as specific as pydata’s a:visited(:hover), so they win by coming later */
+a.dropdown-item {
+    color: var(--bs-dropdown-link-color);
+
+    &:hover {
+        color: var(--bs-dropdown-link-hover-color);
+    }
+    &:is(.active, :active) {
+        color: var(--bs-dropdown-link-active-color);
+    }
+}
+
+/* --- Sidebar ------------------------------------------------------------ */
+
+.sidebar-primary-item {
+    /* Hide empty sidebar items; this:
+     * excludes defined custom elements (which only contain Shadow DOM)
+     * includes an empty ad container
+     */
+    &:has(> :only-child:empty:not(readthedocs-flyout:defined)),
+    &:has(> #ethical-ad-placement):not(:has(> #ethical-ad-placement > *)) {
+        display: none;
+    }
+}
diff --git a/src/scverse_doc/theme/scverse/static/styles/_readthedocs.css b/src/scverse_doc/theme/scverse/static/styles/_readthedocs.css
new file mode 100644
index 0000000..9701790
--- /dev/null
+++ b/src/scverse_doc/theme/scverse/static/styles/_readthedocs.css
@@ -0,0 +1,63 @@
+/* Read the Docs addons (flyout and search), themed via the custom properties of their web components. */
+
+/* --- Flyout ------------------------------------------------------------- */
+
+readthedocs-flyout {
+    --readthedocs-flyout-background-color: transparent;
+    --readthedocs-flyout-font-family: inherit;
+    --readthedocs-flyout-divider-color: var(--scverse-color-border);
+    --readthedocs-flyout-color: var(--scverse-color-text-muted);
+    --readthedocs-flyout-current-version-color: var(
+        --scverse-color-accent-text
+    );
+    --readthedocs-flyout-section-heading-color: var(--scverse-color-text-muted);
+    --readthedocs-flyout-link-color: var(--pst-color-link-higher-contrast);
+    --readthedocs-flyout-item-link-color: var(--pst-color-link);
+
+    padding: 0;
+}
+
+/* --- Search ------------------------------------------------------------- */
+
+readthedocs-search {
+    --readthedocs-search-font-family: var(--scverse-font-body);
+    --readthedocs-search-code-font-family: var(--scverse-font-mono);
+    --readthedocs-search-color: var(--scverse-color-text);
+    --readthedocs-search-link-color: var(--pst-color-link);
+    --readthedocs-search-content-background-color: var(
+        --scverse-color-background
+    );
+    --readthedocs-search-content-border-color: var(--scverse-color-border);
+    --readthedocs-search-filters-border-color: var(--scverse-color-border);
+    --readthedocs-search-input-background-color: var(
+        --scverse-color-surface-alt
+    );
+    --readthedocs-search-footer-background-color: var(
+        --scverse-color-footer-bg
+    );
+    --readthedocs-search-footer-color: var(--scverse-color-text-muted);
+    --readthedocs-search-footer-code-background-color: var(
+        --scverse-color-code-bg
+    );
+    --readthedocs-search-footer-code-border-color: var(
+        --scverse-color-border-muted
+    );
+    --readthedocs-search-result-background-color: var(
+        --scverse-color-background
+    );
+    --readthedocs-search-result-active-background-color: var(
+        --pst-color-primary-bg
+    );
+    --readthedocs-search-result-border-color: var(--scverse-color-border-muted);
+    --readthedocs-search-result-color: var(--scverse-color-text);
+    --readthedocs-search-result-heading-color: var(--scverse-color-heading);
+    --readthedocs-search-result-subheading-color: var(
+        --scverse-color-text-secondary
+    );
+    --readthedocs-search-result-highlight-color: var(
+        --scverse-color-accent-text
+    );
+    --readthedocs-search-result-icon-color: var(--scverse-color-text-muted);
+    --readthedocs-search-badge-background-color: var(--pst-color-primary-bg);
+    --readthedocs-search-badge-color: var(--scverse-color-text);
+}
diff --git a/src/scverse_doc/theme/scverse/static/_tokens.css b/src/scverse_doc/theme/scverse/static/styles/_tokens.css
similarity index 100%
rename from src/scverse_doc/theme/scverse/static/_tokens.css
rename to src/scverse_doc/theme/scverse/static/styles/_tokens.css
diff --git a/src/scverse_doc/theme/scverse/static/styles/scverse.css b/src/scverse_doc/theme/scverse/static/styles/scverse.css
index 9cbdefc..2622003 100644
--- a/src/scverse_doc/theme/scverse/static/styles/scverse.css
+++ b/src/scverse_doc/theme/scverse/static/styles/scverse.css
@@ -11,7 +11,9 @@
  *    clamps the accent’s lightness to meet WCAG AA against the current background. See scverse_doc.theme.
  */
 
-@import url("../_tokens.css");
+@import url("_tokens.css");
+@import url("_pydata.css");
+@import url("_readthedocs.css");
 
 /* Specific enough to beat pydata’s own html[data-theme="…"] token blocks. */
 html[data-theme] {
@@ -61,115 +63,6 @@ html {
 
 /* --- Header ------------------------------------------------------------- */
 
-/* The navbar is empty unless a `navbar_*` option fills it (see theme.toml).
- * Then drop it, let the sidebars stick to the top of the viewport,
- * and make the article header sticky like sphinx-book-theme’s, since it holds the controls instead. */
-html:not(:has(.bd-header__inner)) {
-    --pst-header-height: 0px;
-    /* pydata derives these from the header height */
-    --pst-header-article-height: calc(4rem * 2 / 3);
-    scroll-padding-top: calc(var(--pst-header-article-height) + 1rem);
-
-    .bd-header {
-        display: none;
-    }
-
-    /* pydata sizes the logo by the header height */
-    .navbar-brand {
-        --pst-header-height: auto;
-    }
-
-    /* pydata’s overflow-x would make this the sticky header’s scroll container;
-     * min-width keeps wide content from pushing off the secondary sidebar instead. */
-    .bd-main .bd-content .bd-article-container {
-        overflow-x: unset;
-        min-width: 0;
-    }
-
-    .bd-header-article {
-        position: sticky;
-        top: 0;
-        z-index: 1020; /* Bootstrap’s $zindex-sticky */
-        background-color: var(--pst-color-background);
-        /* Span the article container’s padding, so content doesn’t peek out beside it */
-        margin: -1rem -1rem 0;
-        padding-inline: 1rem;
-        /* pydata’s navbar shadow, horizontally shrunk so it only extends downwards */
-        box-shadow: -0.125rem 0.25rem 0.25rem -0.125rem var(--pst-color-shadow);
-    }
-    /* Where supported, only once the page is scrolled */
-    @supports (animation-timeline: scroll()) {
-        .bd-header-article {
-            animation: scverse-header-shadow linear both;
-            animation-timeline: scroll();
-            animation-range: 0 1rem;
-        }
-    }
-}
-@keyframes scverse-header-shadow {
-    from {
-        box-shadow: none;
-    }
-}
-/* A filled navbar has pydata’s own sidebar toggles. Its JS only binds the first .primary-toggle/.secondary-toggle,
- * so the ones from our toggle-*-sidebar.html components further down would do nothing. */
-html:has(.bd-header__inner) .bd-header-article button.sidebar-toggle {
-    display: none;
-}
-
-.bd-header-article {
-    /* pydata pushes __end right with margin-left: auto, but never makes this a flex container */
-    .header-article-items,
-    .header-article-items__start,
-    .header-article-items__end,
-    .header-article-item {
-        display: flex;
-        align-items: center;
-        gap: 0.5rem;
-    }
-
-    /* Bootstrap’s list margin would push them off-centre */
-    ul.bd-breadcrumbs {
-        margin: 0;
-    }
-
-    /* Space the icon links like the buttons beside them */
-    ul.navbar-icon-links {
-        column-gap: 0.5rem;
-    }
-
-    /* On narrow screens, wrap the breadcrumbs instead of the buttons */
-    .header-article-items__start {
-        min-width: 0;
-    }
-    .header-article-items__end {
-        flex-shrink: 0;
-    }
-
-    /* pydata only styles these inside .bd-header */
-    button.sidebar-toggle {
-        font-size: var(--pst-font-size-icon);
-        color: var(--pst-color-text-muted);
-        background-color: inherit;
-        border: none;
-        padding: 0.5rem;
-    }
-    /* pydata’s $breakpoint-sidebar-primary (lg) and $breakpoint-sidebar-secondary (xl) */
-    @media (min-width: 960px) {
-        button.primary-toggle {
-            display: none;
-        }
-    }
-    @media (min-width: 1200px) {
-        button.secondary-toggle {
-            display: none;
-        }
-    }
-}
-.bd-main:not(:has(#pst-secondary-sidebar)) button.secondary-toggle {
-    display: none;
-}
-
 /* ``fa-scverse`` is not a real Font Awesome glyph – the synced logo is masked into it. */
 .fa-scverse {
     display: inline-block;
@@ -198,30 +91,9 @@ html:has(.bd-header__inner) .bd-header-article button.sidebar-toggle {
     }
 }
 
-/* Bootstrap’s dropdown link colours, as specific as pydata’s a:visited(:hover), so they win by coming later */
-a.dropdown-item {
-    color: var(--bs-dropdown-link-color);
-
-    &:hover {
-        color: var(--bs-dropdown-link-hover-color);
-    }
-    &:is(.active, :active) {
-        color: var(--bs-dropdown-link-active-color);
-    }
-}
-
 /* --- Sidebar ------------------------------------------------------------ */
 
 .sidebar-primary-item {
-    /* Hide empty sidebar items; this:
-     * excludes defined custom elements (which only contain Shadow DOM)
-     * includes an empty ad container
-     */
-    &:has(> :only-child:empty:not(readthedocs-flyout:defined)),
-    &:has(> #ethical-ad-placement):not(:has(> #ethical-ad-placement > *)) {
-        display: none;
-    }
-
     /* for visual consistency, make the search field fill the sidebar */
     .search-button-field {
         width: 100%;
@@ -235,66 +107,6 @@ nav.bd-links p.caption {
     );
 }
 
-readthedocs-flyout {
-    --readthedocs-flyout-background-color: transparent;
-    --readthedocs-flyout-font-family: inherit;
-    --readthedocs-flyout-divider-color: var(--scverse-color-border);
-    --readthedocs-flyout-color: var(--scverse-color-text-muted);
-    --readthedocs-flyout-current-version-color: var(
-        --scverse-color-accent-text
-    );
-    --readthedocs-flyout-section-heading-color: var(--scverse-color-text-muted);
-    --readthedocs-flyout-link-color: var(--pst-color-link-higher-contrast);
-    --readthedocs-flyout-item-link-color: var(--pst-color-link);
-
-    padding: 0;
-}
-
-/* --- Search ------------------------------------------------------------- */
-
-readthedocs-search {
-    --readthedocs-search-font-family: var(--scverse-font-body);
-    --readthedocs-search-code-font-family: var(--scverse-font-mono);
-    --readthedocs-search-color: var(--scverse-color-text);
-    --readthedocs-search-link-color: var(--pst-color-link);
-    --readthedocs-search-content-background-color: var(
-        --scverse-color-background
-    );
-    --readthedocs-search-content-border-color: var(--scverse-color-border);
-    --readthedocs-search-filters-border-color: var(--scverse-color-border);
-    --readthedocs-search-input-background-color: var(
-        --scverse-color-surface-alt
-    );
-    --readthedocs-search-footer-background-color: var(
-        --scverse-color-footer-bg
-    );
-    --readthedocs-search-footer-color: var(--scverse-color-text-muted);
-    --readthedocs-search-footer-code-background-color: var(
-        --scverse-color-code-bg
-    );
-    --readthedocs-search-footer-code-border-color: var(
-        --scverse-color-border-muted
-    );
-    --readthedocs-search-result-background-color: var(
-        --scverse-color-background
-    );
-    --readthedocs-search-result-active-background-color: var(
-        --pst-color-primary-bg
-    );
-    --readthedocs-search-result-border-color: var(--scverse-color-border-muted);
-    --readthedocs-search-result-color: var(--scverse-color-text);
-    --readthedocs-search-result-heading-color: var(--scverse-color-heading);
-    --readthedocs-search-result-subheading-color: var(
-        --scverse-color-text-secondary
-    );
-    --readthedocs-search-result-highlight-color: var(
-        --scverse-color-accent-text
-    );
-    --readthedocs-search-result-icon-color: var(--scverse-color-text-muted);
-    --readthedocs-search-badge-background-color: var(--pst-color-primary-bg);
-    --readthedocs-search-badge-color: var(--scverse-color-text);
-}
-
 /* --- Cards -------------------------------------------------------------- */
 
 /* .bd-content exists to beat sphinx-design in selector specificity */
diff --git a/src/scverse_doc/theme/scverse/theme.toml b/src/scverse_doc/theme/scverse/theme.toml
index 7b51404..9ff23b6 100644
--- a/src/scverse_doc/theme/scverse/theme.toml
+++ b/src/scverse_doc/theme/scverse/theme.toml
@@ -1,7 +1,8 @@
 [theme]
 inherit = "pydata_sphinx_theme"
+# Built from styles/scverse.css by hatch_build.py.
 stylesheets = [
-    "styles/scverse.css",
+    "styles/scverse.min.css",
 ]
 pygments_style = { default = "tango" }
 sidebars = ["navbar-logo", "search-button-field", "scverse-sidebar-nav"]
diff --git a/tests/test_build.py b/tests/test_build.py
index 8ea53b3..ceab59c 100644
--- a/tests/test_build.py
+++ b/tests/test_build.py
@@ -49,7 +49,7 @@ def minimal(tmp_path_factory: pytest.TempPathFactory) -> Iterator[tuple[SphinxTe
 def test_theme_renders_the_shared_chrome(minimal: tuple[SphinxTestApp, str]) -> None:
     app, html = minimal
     assert app.config.html_theme == "scverse"
-    for css in ("styles/scverse.css", "scverse-accent.css"):
+    for css in ("styles/scverse.min.css", "scverse-accent.css"):
         assert css in html
     assert "NumFOCUS" in html
     assert "github.com/scverse/pertpy/edit/main/docs/index.md" in html