diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aceab88..cf6f7f7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -48,6 +48,10 @@ jobs:
         run: |
           node tools/render-hidden-text.mjs
           python tools/verify-hidden-text.py
+      - name: Verify SVG cascade and inset-shadow paint from the installed package
+        run: |
+          node tools/render-engine-paint.mjs
+          python tools/verify-engine-paint.py
       - name: Verify inline wrapping from the installed package
         run: |
           npm run render:inline
@@ -65,7 +69,7 @@ jobs:
           npm run render:fonts -- --package-root output/font-baseline-consumer/node_modules/fullbleed --out output/font-baseline
           npm run verify:fonts -- --evidence-root output/font-baseline --allow-legacy-metadata
           npm run render:fonts
-          npm run verify:fonts -- --baseline output/font-baseline --reviewed-layout test/fixtures/inline-layout-2.5.24.json
+          npm run verify:fonts -- --baseline output/font-baseline --reviewed-layout test/fixtures/inline-layout-2.5.29.json
       - name: Verify installed custom font families against explicit faces
         run: |
           npm run render:families
@@ -109,6 +113,7 @@ jobs:
             output/standard-fonts/
             output/engine-regressions/
             output/hidden-text/
+            output/engine-paint/
             output/component-verification/
           retention-days: 7
 
@@ -150,7 +155,7 @@ jobs:
         run: |
           python -m pip install pypdf==6.19.0 pypdfium2==5.14.0 fonttools==4.65.0 pillow==12.3.0
           npm run render:fonts
-          npm run verify:fonts -- --reviewed-layout test/fixtures/inline-layout-2.5.24.json
+          npm run verify:fonts -- --reviewed-layout test/fixtures/inline-layout-2.5.29.json
           npm run render:families
           npm run verify:families
           npm run render:inline
@@ -161,6 +166,8 @@ jobs:
           python tools/verify-engine-regressions.py
           node tools/render-hidden-text.mjs
           python tools/verify-hidden-text.py
+          node tools/render-engine-paint.mjs
+          python tools/verify-engine-paint.py
           python tools/verify-components.py
       - uses: actions/upload-artifact@v4
         if: always() && matrix.os == 'windows-latest' && matrix.node == '22'
@@ -173,6 +180,7 @@ jobs:
             output/standard-fonts/
             output/engine-regressions/
             output/hidden-text/
+            output/engine-paint/
             output/component-verification/
           retention-days: 7
       - uses: actions/upload-artifact@v4
@@ -195,7 +203,7 @@ jobs:
     name: Browser package (${{ matrix.browser }})
     needs: build
     runs-on: ubuntu-latest
-    timeout-minutes: 15
+    timeout-minutes: 25
     strategy:
       fail-fast: false
       matrix:
@@ -237,6 +245,7 @@ jobs:
       - run: python tools/check-html-export.py --browser ${{ matrix.browser }} --label ci
       - run: python tools/verify-engine-regressions.py output/browser-${{ matrix.browser }}-ci --browser
       - run: python tools/verify-hidden-text.py output/browser-${{ matrix.browser }}-ci --browser
+      - run: python tools/verify-engine-paint.py output/browser-${{ matrix.browser }}-ci --browser
       - uses: actions/upload-artifact@v4
         if: always()
         with:
diff --git a/README.md b/README.md
index 0e5c6fd..4874704 100644
--- a/README.md
+++ b/README.md
@@ -20,8 +20,8 @@ download a PDF. Each starter also includes a ZIP for local development.
 Using Vue? The [Vue and TypeScript starter](examples/vue) includes editable
 templates, automatic previews, downloads, and a reusable `usePdfPreview` composable.
 
-This is an optional integration around the published **Fullbleed 2.5.24** engine.
-The package has its own version, **0.7.0**. Node applications can use a shared
+This is an optional integration around the published **Fullbleed 2.5.29** engine.
+The package has its own version, **0.7.1**. Node applications can use a shared
 render queue to bound active renders and waiting requests, include queue time in
 deadlines, cancel waiting jobs, and stop rendering cleanly during shutdown.
 The browser entry renders in a Web Worker, and the Node API supports worker and
@@ -31,14 +31,20 @@ process isolation. See the [browser guide](docs/browser.md),
 [font-family checks](https://github.com/fullbleed-engine/fullbleed-node/blob/main/docs/font-families.md), and
 [embedded-font checks](https://github.com/fullbleed-engine/fullbleed-node/blob/main/docs/font-subsets.md) for the retained fixtures.
 
-Version 0.7.0 adds [static HTML export with or without styles](docs/components.md#export-html-with-or-without-styles):
+Version 0.7.1 brings the stable engine's SVG stylesheet and inset-shadow fixes to
+Node.js and browser workers. The [paint checks](docs/engine-2.5.29.md) cover
+stylesheet selectors, inherited SVG colors and opacity, and clipped, blurred,
+translated and negative-spread inset shadows. The component and static HTML APIs
+remain unchanged.
+
+Version 0.7.0 added [static HTML export with or without styles](docs/components.md#export-html-with-or-without-styles):
 `doc.toHtml({ includeStyles: true })` embeds the document stylesheet;
 `doc.toHtml({ includeStyles: false })` removes CSS while preserving class names
 and content. Documents, fragments and JSX use the same export options. Importing
 `fullbleed/ui` does not load the PDF renderer or add JavaScript to the output.
 
 Version 0.6.0 added component authoring, attached stylesheets and explicit document
-rendering. The engine remains pinned to 2.5.24. The [component guide](docs/components.md)
+rendering. The [component guide](docs/components.md)
 includes zero-build JavaScript and TSX versions of a complete designed invoice.
 
 Version 0.5.1 brought the engine's hidden-text and font-decoration fixes to both
@@ -67,7 +73,7 @@ Use Node.js 22 or newer. Install the [npm package](https://www.npmjs.com/package
 npm install fullbleed
 ```
 
-For a version-pinned installation, use `npm install --save-exact fullbleed@0.7.0`.
+For a version-pinned installation, use `npm install --save-exact fullbleed@0.7.1`.
 Package archives and retained PDF/PNG evidence are attached to each
 [GitHub release](https://github.com/fullbleed-engine/fullbleed-node/releases).
 The [installation verification records](https://github.com/fullbleed-engine/fullbleed-node/tree/main/verification)
diff --git a/docs/components.md b/docs/components.md
index 3ed9dbc..cf61c80 100644
--- a/docs/components.md
+++ b/docs/components.md
@@ -32,7 +32,7 @@ await writeFile('invoice.pdf', result.pdf);
 await writeFile('invoice.png', result.previews[0]);
 ```
 
-Save this as `invoice.mjs`, install `fullbleed@0.7.0`, and run `node invoice.mjs`
+Save this as `invoice.mjs`, install `fullbleed@0.7.1`, and run `node invoice.mjs`
 with Node 22 or newer. Functions need no special wrapper. The optional
 `component(fn)` identity helper preserves the function and its types.
 
@@ -233,7 +233,11 @@ stylesheets; use raw CSS for nested at-rules.
 `document.toCss(...overrides)` returns layout defaults, document styles and then
 overrides in cascade order. `document.toHtml()` returns HTML only. When calling
 the underlying API yourself, pass both: `renderPdf({ html: doc.toHtml(), css: doc.toCss() })`.
-The pinned PDF engine does not load embedded stylesheets or remote CSS implicitly.
+Starting with 0.7.1, the pinned engine also reads supported static `<style>` sheets
+from complete HTML. `renderPdf({ html: doc.toHtml({ includeStyles: true }), css: '',
+defaultStyles: false })` carries the component CSS with the HTML. The installed
+package checks both paths against the same seven component examples. Remote
+stylesheets are not fetched; supply their CSS explicitly.
 
 The document's `title` and `lang` describe its HTML. `page` and `margin` are
 authoring metadata; set actual PDF page geometry in `@page` CSS. They do not set
@@ -292,9 +296,9 @@ CSS support and pagination, so browser HTML is not a promise of identical PDF
 layout. Values used as text and attributes are escaped, but developer-authored
 CSS, tags and URLs are not sanitized. Unstyled export is not a security sanitizer.
 
-For PDFs, continue using `report.renderPdf(renderer)` or
-`renderDocument(report, renderer)`. These pass HTML and CSS separately to the
-pinned engine; `includeStyles` changes HTML export only.
+For PDFs, `report.renderPdf(renderer)` and `renderDocument(report, renderer)`
+pass HTML and CSS together for you. The engine can also read the static
+stylesheets in complete styled HTML exports, as shown above.
 
 ## Queues and browsers
 
diff --git a/docs/engine-2.5.29.md b/docs/engine-2.5.29.md
new file mode 100644
index 0000000..eff551d
--- /dev/null
+++ b/docs/engine-2.5.29.md
@@ -0,0 +1,56 @@
+# Stylesheets, SVG and inset shadows
+
+Fullbleed JavaScript 0.7.1 pins the unchanged published Fullbleed 2.5.29
+Rust engine. Both `fullbleed` and `fullbleed/browser` use that engine.
+The component, JSX and static HTML export APIs are unchanged.
+
+This update brings the stable engine's SVG cascade and inset-shadow fixes
+to JavaScript, together with the correction for isolated-group opacity in
+saved-PDF previews. For example, an SVG shape selected by `.mark { fill: #d00000; }`
+must use that color instead of the default black. An inset shadow translated
+beyond the box must still shade the appropriate interior, and a negative-spread
+shadow must leave its specified clear area untouched.
+
+Pass document CSS through the `css` option, or attach a `StyleSheet` to a
+component document. The upgraded engine also reads supported static HTML
+`<style>` sheets: the seven installed component examples produce identical PDF
+and preview bytes when rendered from their complete styled HTML export with an
+empty CSS argument. Remote stylesheets are not fetched. Exported HTML
+can include the document stylesheet with `toHtml({ includeStyles: true })` or
+omit styles while preserving classes with `toHtml({ includeStyles: false })`.
+
+## Verification inputs
+
+[`engine-paint-2.5.28.json`](../test/fixtures/engine-paint-2.5.28.json) contains
+141 fixtures derived from the 2.5.28 core SVG and shadow checks. Their source
+cases, expected colors and tolerances are unchanged; the engine under test is
+now 2.5.29:
+
+- 106 SVG cases, including document selectors, inline SVG styles, inheritance,
+  cascade priorities, custom properties, current color, opacity, gradients,
+  masks, use references and external-image isolation. Inline SVG cases also
+  exercise a zero-effect filter fallback.
+- 27 inset-shadow cases covering signed spread, translation, blur, tables and
+  page-edge clipping.
+- Eight source/control documents for four complete clear-region comparisons
+  at 300 DPI.
+
+The paint checks compare explicit RGB expectations and Gaussian blur probes in
+both the generated preview and an independent PDFium rendering. They also check
+page counts, extracted text, physical page sizes and text bounds. The clear-region
+checks compare every pixel in the specified region against a shadow-free control.
+
+The release gate requires all fixtures from Node worker and process isolation
+on Windows and Linux, plus actual Chrome, Firefox and WebKit downloads. Native
+Rust and WASI output must match for these same fixtures. Repeated PDF and preview
+bytes must match. The earlier component, HTML export, hidden-text, default-style
+and font checks remain in the gate with their retained expectations.
+
+The public 0.7.0 package is the negative control: it reproduces SVG and shadow
+paint failures while passing explicit-color and empty-shadow controls. The held 2.5.28 candidate additionally reproduces four worker/process failures in saved-PDF previews for overlapping group members and reused symbols; its independently rendered PDFs pass. Both failing inputs and outputs are retained. This
+distinguishes the regressions from an unreadable PDF or a broken test harness.
+
+Release-specific PDF/PNG outputs, reports and the exact tested npm tarball are
+retained with the [GitHub release](https://github.com/fullbleed-engine/fullbleed-node/releases/tag/v0.7.1).
+These checks cover the specified inputs and supported rendering options; they
+do not establish complete CSS/browser parity or PDF standards conformance.
diff --git a/engine/Cargo.lock b/engine/Cargo.lock
index 8163cde..f5367ae 100644
--- a/engine/Cargo.lock
+++ b/engine/Cargo.lock
@@ -4,9 +4,9 @@ version = 4
 
 [[package]]
 name = "fullbleed"
-version = "2.5.24"
+version = "2.5.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "667e051d5273d2c2818fcd6a0bad49d655df65fb9442988e46e6ef15376d406f"
+checksum = "f266ce8efb4ccf38a8d9c809173720773aa5af95d7035bbe41372ff5be3d0f67"
 dependencies = [
  "fullbleed_audit_contract",
  "subsetter",
@@ -15,7 +15,7 @@ dependencies = [
 
 [[package]]
 name = "fullbleed-node-adapter"
-version = "0.7.0"
+version = "0.7.1"
 dependencies = [
  "fullbleed",
 ]
diff --git a/engine/Cargo.toml b/engine/Cargo.toml
index d83ff5b..0a4214d 100644
--- a/engine/Cargo.toml
+++ b/engine/Cargo.toml
@@ -1,12 +1,12 @@
 [package]
 name = "fullbleed-node-adapter"
-version = "0.7.0"
+version = "0.7.1"
 edition = "2024"
 license = "MIT"
 publish = false
 
 [dependencies]
-fullbleed = { version = "=2.5.24", features = ["svg_raster"] }
+fullbleed = { version = "=2.5.29", features = ["svg_raster"] }
 
 [profile.release]
 lto = true
diff --git a/package-lock.json b/package-lock.json
index 0d3d48f..54d6564 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "fullbleed",
-  "version": "0.7.0",
+  "version": "0.7.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "fullbleed",
-      "version": "0.7.0",
+      "version": "0.7.1",
       "license": "MIT",
       "dependencies": {
         "@bjorn3/browser_wasi_shim": "0.4.2"
diff --git a/package.json b/package.json
index c4cd9e9..d007842 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fullbleed",
-  "version": "0.7.0",
+  "version": "0.7.1",
   "description": "Generate PDFs from function components, JSX, or HTML/CSS in Node.js or a browser worker, with bundled fonts and PNG previews.",
   "type": "module",
   "main": "./src/index.cjs",
@@ -103,7 +103,7 @@
     "access": "public"
   },
   "fullbleed": {
-    "engineVersion": "2.5.24"
+    "engineVersion": "2.5.29"
   },
   "devDependencies": {
     "@types/node": "22.20.5",
diff --git a/test/engine-paint.mjs b/test/engine-paint.mjs
new file mode 100644
index 0000000..2741172
--- /dev/null
+++ b/test/engine-paint.mjs
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: MIT
+import { readFile } from 'node:fs/promises';
+
+export const enginePaintSource = JSON.parse(await readFile(new URL('./fixtures/engine-paint-2.5.28.json', import.meta.url), 'utf8'));
+export const enginePaintFixtures = enginePaintSource.cases.map(({ name, pages, html, css, previewDpi, defaultStyles }) =>
+  ({ name, pages, html, css, previewDpi, defaultStyles }));
diff --git a/test/fixtures/default-styles.json b/test/fixtures/default-styles.json
index ed06d6c..d6004bf 100644
--- a/test/fixtures/default-styles.json
+++ b/test/fixtures/default-styles.json
@@ -1,5 +1,5 @@
 {
-  "engineVersion": "2.5.24",
+  "engineVersion": "2.5.29",
   "legacyPackage": "0.4.1",
   "baseline": "Playground WASI renderer with unchanged HTML/CSS; legacy hashes from the published fullbleed@0.4.1 package.",
   "wasmSha256": "2fc9dc5548df93a1d8bac7a7f898781ae7a46c4112911294a07756123d895c40",
@@ -88,5 +88,7 @@
         "png": "00667c2a9d0edf8f7ed069853ee9a2c4f75a3ea604793120c0d899ac0a278775"
       }
     }
-  ]
+  ],
+  "baselineEngineVersion": "2.5.24",
+  "compatibilityScope": "The existing source, control and output hashes are unchanged. Engine 2.5.29 must reproduce them before release."
 }
diff --git a/test/fixtures/engine-paint-2.5.28.json b/test/fixtures/engine-paint-2.5.28.json
new file mode 100644
index 0000000..a57c0f5
--- /dev/null
+++ b/test/fixtures/engine-paint-2.5.28.json
@@ -0,0 +1,5719 @@
+{
+  "schema": "fullbleed.javascript.paint-fixtures.v1",
+  "engineVersion": "2.5.29",
+  "provenance": [
+    {
+      "path": "tools/smoke_svg_styles.py",
+      "sha256": "bc31bcc411c4087dcfefe6d92c5fef2b4cf41d9bb878641b9c366d1686ba4b53",
+      "source": "https://github.com/fullbleed-engine/fullbleed-official/blob/v2.5.28/tools/smoke_svg_styles.py"
+    },
+    {
+      "path": "tools/smoke_inset_shadows.py",
+      "sha256": "8f9ea0092c5305d0cdfd26075bbbffaff5a1b623bfd0d93bc7cd96db6fbf4415",
+      "source": "https://github.com/fullbleed-engine/fullbleed-official/blob/v2.5.28/tools/smoke_inset_shadows.py"
+    }
+  ],
+  "sourceCoreTag": "v2.5.28",
+  "scope": "Released SVG cascade and inset-shadow inputs with specified colors, Gaussian blur probes and complete clear-region controls. No complete CSS/browser parity claim.",
+  "negativeControl": {
+    "packageVersion": "0.7.0",
+    "engineVersion": "2.5.24",
+    "requiredFailingFamilies": [
+      "svg-cascade",
+      "inset-shadow"
+    ],
+    "passingControls": [
+      "svg-css-explicit-presentation-default",
+      "svg-css-explicit-presentation-filter-fallback",
+      "inset-empty-control-block"
+    ]
+  },
+  "cases": [
+    {
+      "name": "svg-css-explicit-presentation-default",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" fill=\"#d00000\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-explicit-presentation-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" fill=\"#d00000\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-document-class-default",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}.mark {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-document-class-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}.mark {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-document-ancestor-default",
+      "family": "svg-cascade",
+      "html": "<main class=\"brand\"><svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg></main> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}.brand .mark {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-document-ancestor-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<main class=\"brand\"><svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg></main> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}.brand .mark {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-document-child-default",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}svg > rect {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
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+    {
+      "name": "svg-css-svg-transparent-mask-group-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><defs><mask id=\"m\"><g opacity=\"0\"><rect width=\"100\" height=\"100\" fill=\"white\"/></g></mask></defs><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" fill=\"#d00000\" mask=\"url(#m)\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-stroke-opacity-replacement-default",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" fill=\"none\" stroke=\"#d00000\" stroke-width=\"100\" stroke-opacity=\"0.25\" style=\"stroke-opacity:1\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
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+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-stroke-opacity-replacement-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" fill=\"none\" stroke=\"#d00000\" stroke-width=\"100\" stroke-opacity=\"0.25\" style=\"stroke-opacity:1\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
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+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-use-inheritance-default",
+      "family": "svg-cascade",
+      "html": "<svg width=\"100\" height=\"100\"><defs><rect id=\"shape\" width=\"100\" height=\"100\"/></defs><use href=\"#shape\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}use {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
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+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-use-inheritance-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg width=\"100\" height=\"100\"><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><defs><rect id=\"shape\" width=\"100\" height=\"100\"/></defs><use href=\"#shape\"/></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}use {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
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+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
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+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-sibling-selector-default",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><g/><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}svg > g + rect {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
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+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-svg-sibling-selector-filter-fallback",
+      "family": "svg-cascade",
+      "html": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100\" height=\"100\" ><defs><filter id=\"force-raster\"><feGaussianBlur stdDeviation=\"0\"/></filter></defs><g/><rect id=\"target\" class=\"mark\" width=\"100\" height=\"100\" /></svg> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}svg > g + rect {fill:#d00000}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              208,
+              0,
+              0
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-external-svg-isolation-default",
+      "family": "svg-cascade",
+      "html": "<img width=\"100\" height=\"100\" src=\"data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiA+PHN0eWxlPi5tYXJrIHtmaWxsOiMwMDYwYzB9PC9zdHlsZT48cmVjdCBpZD0idGFyZ2V0IiBjbGFzcz0ibWFyayIgd2lkdGg9IjEwMCIgaGVpZ2h0PSIxMDAiIC8+PC9zdmc+\"> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}.mark {fill:#d00000 !important}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              0,
+              96,
+              192
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "svg-css-external-svg-root-opacity-inheritance-default",
+      "family": "svg-cascade",
+      "html": "<img width=\"100\" height=\"100\" src=\"data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiBvcGFjaXR5PSIwLjUiPjxyZWN0IGlkPSJ0YXJnZXQiIGNsYXNzPSJtYXJrIiB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIgZmlsbD0iI2QwMDAwMCIgb3BhY2l0eT0iaW5oZXJpdCIvPjwvc3ZnPg==\"> <p>1042</p>",
+      "css": "@page {size:300pt 200pt;margin:0} html,body {margin:0;padding:0} svg {display:block} p {margin:0}body {font-family:Inter}",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          300,
+          200
+        ],
+        "text": "1042",
+        "probes": [
+          {
+            "x": 24,
+            "y": 24,
+            "expected": [
+              243,
+              192,
+              192
+            ],
+            "tolerance": 2
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-hidden-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-hidden-block-clear-reference",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: none; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": []
+      }
+    },
+    {
+      "name": "inset-negative-hidden-block-clear-region",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [],
+        "clearRegion": {
+          "reference": "inset-negative-hidden-block-clear-reference",
+          "start": 0
+        }
+      }
+    },
+    {
+      "name": "inset-negative-hidden-rounded-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
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+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
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+            "y": 60,
+            "expected": [
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
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+            "y": 60,
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
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+            "y": 10,
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-hidden-rounded-block-clear-reference",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: none; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": []
+      }
+    },
+    {
+      "name": "inset-negative-hidden-rounded-block-clear-region",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [],
+        "clearRegion": {
+          "reference": "inset-negative-hidden-rounded-block-clear-reference",
+          "start": 0
+        }
+      }
+    },
+    {
+      "name": "inset-negative-left-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 35,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
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+            "y": 60,
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+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-right-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset -24px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 125,
+            "y": 60,
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
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+            "y": 60,
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-positive-offset-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 12px 0 0 8px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 45,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-diagonal-offset-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 24px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 60,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 90,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-diagonal-offset-block-clear-reference",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: none; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": []
+      }
+    },
+    {
+      "name": "inset-diagonal-offset-block-clear-region",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 24px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [],
+        "clearRegion": {
+          "reference": "inset-diagonal-offset-block-clear-reference",
+          "start": 144
+        }
+      }
+    },
+    {
+      "name": "inset-large-left-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 100px 0 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 105,
+            "y": 60,
+            "expected": [
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+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 125,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-large-right-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset -100px 0 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 45,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-large-down-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 0 60px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 65,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 90,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-large-up-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 0 -60px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 45,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 90,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-rounded-offset-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 20px 8px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 45,
+            "y": 30,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 40,
+            "y": 40,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 65,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-elliptical-negative-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 6px 14px 12px 20px / 12px 20px 6px 14px;\n  box-shadow: inset 24px 12px 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 45,
+            "y": 25,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-collapsed-hole-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 20px 0 0 50px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-translated-away-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 160px 0 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-translated-away-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 160px 0 12px 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
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+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
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+              87,
+              155
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+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 25,
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+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
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+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-negative-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 12px -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              202,
+              249
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+            "tolerance": 3
+          },
+          {
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+            "y": 60,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
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+            "y": 10,
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
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+            "y": 110,
+            "expected": [
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+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 23,
+            "y": 60,
+            "expected": [
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+              96,
+              162
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 29,
+            "y": 60,
+            "expected": [
+              49,
+              126,
+              187
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+            "tolerance": 10
+          },
+          {
+            "x": 35,
+            "y": 60,
+            "expected": [
+              104,
+              170,
+              223
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+            "tolerance": 10
+          },
+          {
+            "x": 41,
+            "y": 60,
+            "expected": [
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+              195,
+              244
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+            "tolerance": 10
+          },
+          {
+            "x": 47,
+            "y": 60,
+            "expected": [
+              143,
+              201,
+              249
+            ],
+            "tolerance": 10
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-empty-control-block",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 0 0 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
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+            "x": 25,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
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+            "y": 25,
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+              249
+            ],
+            "tolerance": 3
+          },
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+            "y": 60,
+            "expected": [
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+              249
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+            "tolerance": 3
+          },
+          {
+            "x": 21,
+            "y": 21,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
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+            "y": 60,
+            "expected": [
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
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+            "y": 60,
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+              255
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+            "tolerance": 3
+          },
+          {
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+            "y": 10,
+            "expected": [
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-hidden-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
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+            "x": 25,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
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+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
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+              255,
+              255
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+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-negative-hidden-cell-clear-reference",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: none; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": []
+      }
+    },
+    {
+      "name": "inset-negative-hidden-cell-clear-region",
+      "family": "inset-clear-region",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 8px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 300,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [],
+        "clearRegion": {
+          "reference": "inset-negative-hidden-cell-clear-reference",
+          "start": 0
+        }
+      }
+    },
+    {
+      "name": "inset-negative-left-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 0 -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
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+            "x": 25,
+            "y": 60,
+            "expected": [
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+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 35,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
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+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-positive-offset-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 12px 0 0 8px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 45,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
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+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-large-left-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 100px 0 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 25,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 105,
+            "y": 60,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 125,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-large-down-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 0 60px 0 0 #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 80,
+            "y": 25,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 65,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 90,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-negative-cell",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><table><tbody><tr><td class=\"box\"></td></tr></tbody></table></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 20px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 12px -12px #01579b; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 80,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 135,
+            "y": 60,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 10,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 150,
+            "y": 60,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 10,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 80,
+            "y": 110,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 23,
+            "y": 60,
+            "expected": [
+              12,
+              96,
+              162
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 29,
+            "y": 60,
+            "expected": [
+              49,
+              126,
+              187
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 35,
+            "y": 60,
+            "expected": [
+              104,
+              170,
+              223
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 41,
+            "y": 60,
+            "expected": [
+              136,
+              195,
+              244
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 47,
+            "y": 60,
+            "expected": [
+              143,
+              201,
+              249
+            ],
+            "tolerance": 10
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-translated-away-page-start",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 0px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 160px 0 12px 0 #01579b; }\n.box { position: absolute; left: 0px; top: 0px; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 5,
+            "y": 40,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 60,
+            "y": 40,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 115,
+            "y": 40,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 60,
+            "y": 5,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 1,
+            "y": 1,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 130,
+            "y": 40,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 60,
+            "y": 90,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-negative-page-start",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 0px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 12px -12px #01579b; }\n.box { position: absolute; left: 0px; top: 0px; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 60,
+            "y": 40,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 115,
+            "y": 40,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 130,
+            "y": 40,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 60,
+            "y": 90,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 3,
+            "y": 40,
+            "expected": [
+              12,
+              96,
+              162
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 9,
+            "y": 40,
+            "expected": [
+              49,
+              126,
+              187
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 15,
+            "y": 40,
+            "expected": [
+              104,
+              170,
+              223
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 21,
+            "y": 40,
+            "expected": [
+              136,
+              195,
+              244
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 27,
+            "y": 40,
+            "expected": [
+              143,
+              201,
+              249
+            ],
+            "tolerance": 10
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-translated-away-page-end",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 40px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 20px;\n  box-shadow: inset 160px 0 12px 0 #01579b; }\n.box { position: absolute; left: 40px; top: 40px; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 45,
+            "y": 80,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 100,
+            "y": 80,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 155,
+            "y": 80,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 100,
+            "y": 45,
+            "expected": [
+              1,
+              87,
+              155
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 41,
+            "y": 41,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 30,
+            "y": 80,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 100,
+            "y": 30,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          }
+        ]
+      }
+    },
+    {
+      "name": "inset-blur-negative-page-end",
+      "family": "inset-shadow",
+      "html": "<!doctype html><html><body><div class=\"stage\"><div class=\"box\"></div></div></body></html>",
+      "css": "@page { size: 160px 120px; margin: 0; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\nhtml, body { background: white; }\n.stage { padding: 40px; width: 160px; height: 120px; }\ntable { border-collapse: separate; border-spacing: 0; }\n.box { width: 120px; height: 80px; background: #90caf9; border-radius: 0;\n  box-shadow: inset 24px 0 12px -12px #01579b; }\n.box { position: absolute; left: 40px; top: 40px; }\n",
+      "pages": 1,
+      "previewDpi": 96,
+      "defaultStyles": false,
+      "expected": {
+        "pageSizePt": [
+          120,
+          90
+        ],
+        "text": "",
+        "probes": [
+          {
+            "x": 100,
+            "y": 80,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 155,
+            "y": 80,
+            "expected": [
+              144,
+              202,
+              249
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 30,
+            "y": 80,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 100,
+            "y": 30,
+            "expected": [
+              255,
+              255,
+              255
+            ],
+            "tolerance": 3
+          },
+          {
+            "x": 43,
+            "y": 80,
+            "expected": [
+              12,
+              96,
+              162
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 49,
+            "y": 80,
+            "expected": [
+              49,
+              126,
+              187
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 55,
+            "y": 80,
+            "expected": [
+              104,
+              170,
+              223
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 61,
+            "y": 80,
+            "expected": [
+              136,
+              195,
+              244
+            ],
+            "tolerance": 10
+          },
+          {
+            "x": 67,
+            "y": 80,
+            "expected": [
+              143,
+              201,
+              249
+            ],
+            "tolerance": 10
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/test/fixtures/hidden-text-2.5.24.json b/test/fixtures/hidden-text-2.5.24.json
index 3bbe4e9..a0d9c77 100644
--- a/test/fixtures/hidden-text-2.5.24.json
+++ b/test/fixtures/hidden-text-2.5.24.json
@@ -1,6 +1,6 @@
 {
   "schema": "fullbleed.javascript.hidden-text-fixtures.v1",
-  "engineVersion": "2.5.24",
+  "engineVersion": "2.5.29",
   "sourceCommit": "6251674614fff698ce685733e81bf481e6e81313",
   "sourceReview": "https://github.com/fullbleed-engine/fullbleed-official/pull/79",
   "sourceVerificationSha256": "7d5a431ca20aa50d94022494a0d6acdbfd73632aca7159f6aa60a0cfc541a7cd",
@@ -1604,5 +1604,7 @@
         ]
       }
     }
-  ]
+  ],
+  "baselineEngineVersion": "2.5.24",
+  "compatibilityScope": "The existing source, control and output hashes are unchanged. Engine 2.5.29 must reproduce them before release."
 }
diff --git a/test/fixtures/inline-layout-2.5.29.json b/test/fixtures/inline-layout-2.5.29.json
new file mode 100644
index 0000000..c09fbc0
--- /dev/null
+++ b/test/fixtures/inline-layout-2.5.29.json
@@ -0,0 +1,71 @@
+{
+  "schema": "fullbleed.reviewed_inline_layout.v1",
+  "engineVersion": "2.5.29",
+  "source": "https://crates.io/crates/fullbleed/2.5.29",
+  "reason": "All reviewed input, font, PDF, preview, independent raster and text hashes remain unchanged from the prior engine gate. The candidate must match these controls.",
+  "fonts": [
+    {
+      "name": "Inter-Variable.ttf",
+      "path": "fonts/Inter-Variable.ttf",
+      "bytes": 876576,
+      "sha256": "29160a80ff49ddcab2c97711247e08b1fab27a484a329ce8b813d820dc559031"
+    },
+    {
+      "name": "DMSerifDisplay-Regular.ttf",
+      "path": "fonts/DMSerifDisplay-Regular.ttf",
+      "bytes": 76580,
+      "sha256": "8cc3643535edf039aa5d95440a8542735e9197e4f4b8d9303e980fefbf5ab616"
+    },
+    {
+      "name": "DMSerifDisplay-Italic.ttf",
+      "path": "fonts/DMSerifDisplay-Italic.ttf",
+      "bytes": 71208,
+      "sha256": "df74c0ac387baeaeb0fe4f2324e1668e6a3ed8c09cd9796fe162c71753e19e45"
+    },
+    {
+      "name": "BebasNeue-Regular.ttf",
+      "path": "fonts/BebasNeue-Regular.ttf",
+      "bytes": 61400,
+      "sha256": "08e4623805102d819f58601e46e345648846075e363b2ceb23313c2d1c83ec73"
+    },
+    {
+      "name": "NotoSansMath-Regular.ttf",
+      "path": "fonts/NotoSansMath-Regular.ttf",
+      "bytes": 590904,
+      "sha256": "80b61fd613d3519197e64fff6f7e71fdc7f3e6526440ea4115b554ef7fd59af7"
+    }
+  ],
+  "fixtures": {
+    "invoice": {
+      "htmlSha256": "195725eeeb32c521e19b47dbacbb55048bebb6df8566ab135cdc41fbf33fe57a",
+      "cssSha256": "cda22b39ab1f7a1eeac7cd76d162b05cd3568c2430c099123ba30a2fbd58a296",
+      "pages": 1,
+      "text": "Northstar\nStudio\nD E S I G N  W I T H  D I R E C T I O N\nB R A N D\nD I G I T A L\nE X P E R I E N C E S\nT H A T  M A T T E R .\n42 Cedar Avenue\nPortland, OR 97205\nhello@example.invalid\nnorthstar.example.invalid\nINVOICE\nGOOD WORK.\nCLEAR DETAILS.\nLET'S MAKE\nWHAT'S NEXT.\nP R E P A R E D  F O R\nMaple & Finch\nAttn. Avery Morgan\nPortland, Oregon\nT H E  P R O J E C T\nAutumn launch\nBrand workshop, digital\ndesign & handoff\nI N V O I C E  N S - 1 0 4 2\nIssued \u00b7 01 October 2026\nDue \u00b7 31 October 2026\nCurrency \u00b7 USD\nDESCRIPTION HOURS RATE AMOUNT\nDiscovery & brand workshop\nPositioning, priorities, and a clear creative direction\n8 $125.00 $1,000.00\nDigital design & implementation\nA cohesive visual system, from layout to launch\n6 $95.00 $570.00\nReview & studio handoff\nFinal refinements, documentation, and delivery\n2 $150.00 $300.00\nA little clarity.\nA lot of possibility.\nThank you for inviting us\nto help shape your next chapter.\nSubtotal $1,870.00\nTax \u00b7 0% in this sample $0.00\nT O T A L  D U E  \u00b7  U S D\n$1,870.00\nP A Y M E N T  D E T A I L S\nReference NS-1042 with your payment.\nPayment instructions are supplied separately.\nA  N O T E  F R O M  T H E  S T U D I O\nQuestions about a line item?\nWrite to hello@example.invalid.\nNORTHSTAR STUDIO / INVOICE NS-1042 FICTIONAL SAMPLE \u00b7 01 / 01",
+      "pdfSha256": "3078d155f30536f5ad721f7be3c241cd78661ae41249131fc0fd65f37f23e408",
+      "previewsSha256": [
+        "72420749ccc3deaa8025daf7baffcdf79be716b6e8e93ed605effebed01e86c7"
+      ],
+      "pdfiumPixelSha256": [
+        "d71293741974bef9abffbdf5d88b0827b48fe6523f8d9baf46f46fe1000895a5"
+      ]
+    },
+    "report": {
+      "htmlSha256": "46b0e975d43914c8b4492218feae09ea0ad684091a9f9ee3b18f66a87202e521",
+      "cssSha256": "519591ae75c239ec602324f008dd99108ebeae0b9306df7215fa5f0442905473",
+      "pages": 3,
+      "text": "Common Ground\nC O M M U N I T Y T R U S T\nP E O P L E\nP L A C E S\nP O S S I B I L I T I E S\nCOMMON\nGROUND\nStronger places.\nMore room\nfor everyone.\n2026\nC O M M U N I T Y  R E V I E W\nA  Y E A R\nI N  C O M M O N\n0 2  /  O U R  R E A C H\nSmall actions,\nshared outcomes.\n0 3  /  O U R  R E S O U R C E S\nWhere the\nsupport goes.\nCOMMON GROUND / COMMUNITY REVIEW FICTIONAL DATA \u00b7 01 / 03Common Ground 0 2  /  O U R  R E A C H\nA  P L A C E  T O  B E G I N\nSmall actions.\nShared outcomes.\nAn open door, a working kitchen, a garden plot. This year, our fictional neighborhood\nprograms connected more people with practical spaces to learn, make, and belong.\n1,240\nhouseholds took part\nacross four neighborhoods\n4,860\nvolunteer hours\nshared across our programs\n12\ncommunity spaces\nkept open and active\nMore neighbors, each quarter.\nP A R T I C I P A T I N G H O U S E H O L D S\n420\n560\n790\n980\nQ1 Q2 Q3 Q4\nQuarterly participation counts; a household can participate in more than one quarter.\n\u201cBelonging starts\nwith somewhere\nto show up.\u201d\nO U R  P R O G R A M  P R I N C I P L E\nBuilt around daily life.\nEvening workshops, shared meals, and weekend garden\nsessions made participation easier for people with different\nschedules. The next step is a longer opening window at\neach neighborhood space.\nILLUSTRATIVE ANNUAL REVIEW / NOT AN ACTUAL ORGANIZATION 02 / 03Common Ground 0 3  /  O U R  R E S O U R C E S\nF O L L O W  T H E  S U P P O R T\nGood intentions.\nClear allocations.\nA practical view of this fictional operating budget. Every category supports the same\naim: useful places, open to more people.\nPROGRAM AREA ALLOCATION SHARE\nNeighborhood spaces $168,000.00 40%\nLearning & workshops $126,000.00 30%\nShared meals & gardens $84,000.00 20%\nAccess & transport $42,000.00 10%\nT O T A L O P E R A T I N G A L L O C A T I O N \u00b7 U S D $420,000.00\nWhat we count.\nHouseholds are deduplicated within the annual program\nregister. Volunteer hours include recorded event and\nmaintenance time. Space counts refer to year-round\nlocations, not individual events.\nQuarterly counts show participation within each period and\nmust not be added to estimate unique annual reach.\nWhat comes next.\nExtend evening access. Improve step-free entrances.\nPublish a simple monthly view of program activity and\nspending.\nA shared tomorrow\nis built in the everyday.\nCOMMON GROUND / METHODS & ALLOCATIONS FICTIONAL DATA \u00b7 03 / 03",
+      "pdfSha256": "139df89824e6a73c13ff62f1237bb8eb9f71e790dcbd051b1bb713ed2bc47802",
+      "previewsSha256": [
+        "33ee3398d59f6836368cdab0f3c725c3cf12cbf2f9f3a3ac6a6b168f6c1886f5",
+        "c8fe5102e9219962ea068201be0a6730cb37de797649f4b5f44478433e79b018",
+        "a3e8acbc7ba4147c56d45b606d3974ec4aecbda1b5d7362451e5e8890491dc7d"
+      ],
+      "pdfiumPixelSha256": [
+        "c7dc8db8fc08a78f74c4477629e0f68f3b34aa37b9b9eba46a977805933d3f03",
+        "c5e9d15bae4f208ecb0466ba3521e22c1f98c83aeab0e1112deec2fe20d8a711",
+        "05d2ebd36749c7421db665a5bba2ab36559e691b5bc5570ebc095d81af2585b7"
+      ]
+    }
+  },
+  "baselineSource": "https://crates.io/crates/fullbleed/2.5.24"
+}
diff --git a/test/test_release.py b/test/test_release.py
index 38da756..86aff17 100644
--- a/test/test_release.py
+++ b/test/test_release.py
@@ -322,5 +322,65 @@ def test_missing_installed_export_evidence_is_rejected(self):
                     release_check.verify_html_export_evidence(self.report)
 
 
+class PaintReleaseEvidenceTests(unittest.TestCase):
+    def setUp(self):
+        data = release_check.ENGINE_PAINT_SOURCE.read_bytes()
+        fixture = json.loads(data)
+        digest = hashlib.sha256(data).hexdigest()
+        names = sorted(case['name'] for case in fixture['cases'])
+        families = sorted({case['family'] for case in fixture['cases']})
+        self.report = dict(package_version='0.7.1', engine_version=fixture['engineVersion'], package_sha256='a'*64,
+            engine_paint=[dict(platform=platform, ok=True, package_version='0.7.1',
+                engine_version=fixture['engineVersion'], tarball_sha256='a'*64, source_sha256=digest,
+                negative_control=False, cases=2*len(names), families=families, case_names=names)
+                for platform in ['win32', 'linux']],
+            browser_matrix=[dict(browser=browser, paint_ok=True, paint_cases=len(names),
+                paint_source_sha256=digest, paint_negative_control=False) for browser in ['chrome', 'firefox', 'webkit']],
+            native_wasi_fixtures=[dict(name=name, nativeWasiPdfEqual=True, nativeWasiPreviewsEqual=True) for name in names])
+
+    def test_complete_paint_evidence_is_accepted(self):
+        release_check.verify_engine_paint_evidence(self.report)
+
+    def test_missing_or_duplicate_platform_is_rejected(self):
+        self.report['engine_paint'][0]['platform'] = 'linux'
+        with self.assertRaisesRegex(ValueError, 'Windows and Linux'):
+            release_check.verify_engine_paint_evidence(self.report)
+
+    def test_wrong_package_or_incomplete_evidence_is_rejected(self):
+        for key, value in [('ok', False), ('package_version', '0.7.0'), ('engine_version', '2.5.24'),
+                           ('tarball_sha256', 'b'*64), ('source_sha256', 'b'*64), ('negative_control', True),
+                           ('cases', 1), ('families', ['svg-cascade']), ('case_names', [])]:
+            with self.subTest(key=key):
+                self.setUp()
+                self.report['engine_paint'][0][key] = value
+                with self.assertRaisesRegex(ValueError, 'Paint inspection is incomplete'):
+                    release_check.verify_engine_paint_evidence(self.report)
+
+    def test_browser_gaps_and_negative_controls_are_rejected(self):
+        for key, value in [('paint_ok', False), ('paint_cases', 0), ('paint_source_sha256', 'b'*64),
+                           ('paint_negative_control', True)]:
+            with self.subTest(key=key):
+                self.setUp()
+                self.report['browser_matrix'][0][key] = value
+                with self.assertRaisesRegex(ValueError, 'Browser paint inspection'):
+                    release_check.verify_engine_paint_evidence(self.report)
+        self.setUp()
+        self.report['browser_matrix'].pop()
+        with self.assertRaisesRegex(ValueError, 'all three browser'):
+            release_check.verify_engine_paint_evidence(self.report)
+
+    def test_native_gaps_and_differences_are_rejected(self):
+        for change in ['missing', 'duplicate', 'pdf', 'preview']:
+            with self.subTest(change=change):
+                self.setUp()
+                rows = self.report['native_wasi_fixtures']
+                if change == 'missing': rows.pop()
+                elif change == 'duplicate': rows.append(dict(rows[-1]))
+                elif change == 'pdf': rows[-1]['nativeWasiPdfEqual'] = False
+                else: rows[-1]['nativeWasiPreviewsEqual'] = False
+                with self.assertRaisesRegex(ValueError, 'Native/WASI paint comparison'):
+                    release_check.verify_engine_paint_evidence(self.report)
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/tools/check-browser.py b/tools/check-browser.py
index cf325cc..af1c572 100644
--- a/tools/check-browser.py
+++ b/tools/check-browser.py
@@ -189,6 +189,7 @@ def check(name, condition):
             record = {'ok': True, 'checkedAt': datetime.now(timezone.utc).isoformat(), 'browserEngine': args.browser,
               'browser': browser.version, 'playwright': version('playwright'), 'pypdf': version('pypdf'), 'package': prepared['package'],
               'engine': prepared['engine'], 'installedTarballSha256': prepared['installedTarballSha256'],
+              'enginePaintSourceSha256': prepared['enginePaintSourceSha256'],
               'contentSecurityPolicy': policy, 'mainThreadWebAssemblyDisabled': True, 'checks': checks,
               'documents': documents, 'workerCalls': page.evaluate('harness.stats()'), 'network': network, 'serverRequests': requests,
               'pageErrors': errors, 'componentCases': len(component_cases), 'componentEditorDownload': True,
diff --git a/tools/check-installed-components.mjs b/tools/check-installed-components.mjs
index e608577..71dca40 100644
--- a/tools/check-installed-components.mjs
+++ b/tools/check-installed-components.mjs
@@ -37,6 +37,9 @@ try {
     assert.equal(styled, tsxCases[index].node.toHtml({ includeStyles: true }), name + ': JSX styled HTML');
     assert.equal(unstyled, tsxCases[index].node.toHtml({ includeStyles: false }), name + ': JSX unstyled HTML');
     assert(!/<style\b|\sstyle\s*=/i.test(unstyled), name + ': no exported CSS');
+    const embedded = await renderPdf({ html: styled, css: '', defaultStyles: false, previewDpi: 96 });
+    assert.deepEqual(embedded.pdf, result.pdf, name + ': embedded stylesheet PDF');
+    assert.deepEqual(embedded.previews, result.previews, name + ': embedded stylesheet previews');
     assert.deepEqual(result.pdf, repeated.pdf, name + ': function/JSX repeated PDF');
     assert.deepEqual(result.previews, repeated.previews, name + ': function/JSX previews');
     await writeFile(join(out, name + '.html'), node.toHtml());
@@ -47,7 +50,7 @@ try {
     for (const [i, png] of result.previews.entries()) await writeFile(join(out, `${name}-${i + 1}.png`), png);
     records.push({ name, pages, missingGlyphs: result.missingGlyphs, pdf: hash(result.pdf),
       previews: result.previews.map(hash), text, styledHtml: hash(styled), unstyledHtml: hash(unstyled),
-      jsxHtmlCssEqual: true, jsxStyledUnstyledEqual: true, repeatedPdfPreviewsEqual: true });
+      jsxHtmlCssEqual: true, jsxStyledUnstyledEqual: true, repeatedPdfPreviewsEqual: true, embeddedStyledHtmlPdfEqual: true });
   }
   const cjs = createRequire(import.meta.url)('fullbleed/ui');
   const baseline = await renderDocument(jsx(Document, { children: jsxDEV(Paragraph, { children: 'Installed JSX' }) }), renderPdf);
diff --git a/tools/prepare-browser-check.mjs b/tools/prepare-browser-check.mjs
index 283ecbf..13a2acd 100644
--- a/tools/prepare-browser-check.mjs
+++ b/tools/prepare-browser-check.mjs
@@ -10,6 +10,7 @@ import { inlineFixtures } from '../test/inline-wrapping.mjs';
 import { standardFontFixtures } from '../test/standard-fonts.mjs';
 import { engineRegressionFixtures } from '../test/engine-regressions.mjs';
 import { hiddenTextFixtures, hiddenTextSource } from '../test/hidden-text.mjs';
+import { enginePaintFixtures } from '../test/engine-paint.mjs';
 
 const root = resolve('.');
 const out = join(root, 'output/browser-verification');
@@ -64,6 +65,7 @@ const inputs = { invoice: await fixture('invoice'), report: await fixture('repor
   ...Object.fromEntries(standardFontFixtures.map(({ name, font, pages, ...input }) => [name, { ...input, previewDpi: 72 }])),
   ...Object.fromEntries(engineRegressionFixtures.map(({ name, pages, ...input }) => [name, input])),
   ...Object.fromEntries(hiddenTextFixtures.map(({ name, pages, ...input }) => [name, input])),
+  ...Object.fromEntries(enginePaintFixtures.map(({ name, pages, ...input }) => [name, input])),
   custom: { html: '<h1>Local asset test</h1><p>Integral: ⨌</p><img src="assets/brand/logo.svg" width="80" height="40">',
     css: "body {font-family:Inter,'Noto Sans Math'}", previewDpi: 72,
     fontFiles: ['NotoSansMath-Regular.ttf'],
@@ -105,6 +107,7 @@ for (const { name, expected } of hiddenTextSource.cases) {
 }
 for (const name of ['index.html', 'harness.js', 'components.css']) await copyFile('test/browser/' + name, join(site, name));
 const record = { package: pkg.version, engine: pkg.fullbleed.engineVersion, installedTarballSha256: pack.tarballSha256,
+  enginePaintSourceSha256: hash(await readFile(join(root, 'test/fixtures/engine-paint-2.5.28.json'))),
   ssrImportSafe: true, copyCommand: JSON.parse(copy.stdout), baselines, components: components.map(({ name, pages, text }) => ({ name, pages, text })) };
 await writeFile(join(out, 'prepared.json'), JSON.stringify(record, null, 2) + '\n');
 console.log(JSON.stringify({ ok: true, fixtures: Object.keys(baselines).length, files: Object.keys(manifest.files).length, package: pkg.version }));
diff --git a/tools/render-engine-paint.mjs b/tools/render-engine-paint.mjs
new file mode 100644
index 0000000..044f8ad
--- /dev/null
+++ b/tools/render-engine-paint.mjs
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: MIT
+import assert from 'node:assert/strict';
+import { createHash } from 'node:crypto';
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import { join, resolve } from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { parseArgs } from 'node:util';
+import { enginePaintFixtures } from '../test/engine-paint.mjs';
+
+const root = fileURLToPath(new URL('../', import.meta.url));
+const { values } = parseArgs({ options: { 'package-root': { type: 'string' }, out: { type: 'string' } } });
+let packageRoot = values['package-root'], packed;
+if (!packageRoot) {
+  packed = JSON.parse(await readFile(join(root, 'output/pack-verification/verification.json'), 'utf8'));
+  assert(packed.ok);
+  packageRoot = join(root, 'output/pack-verification', packed.installDirectory, 'node_modules/fullbleed');
+}
+packageRoot = resolve(packageRoot);
+const { renderPdf, version, engineVersion } = await import(pathToFileURL(join(packageRoot, 'src/index.js')).href);
+const manifest = JSON.parse(await readFile(join(packageRoot, 'dist/build.json'), 'utf8'));
+const hash = bytes => createHash('sha256').update(bytes).digest('hex');
+assert.equal(manifest.packageVersion, version);
+assert.equal(manifest.engineVersion, engineVersion);
+assert.equal(hash(await readFile(join(packageRoot, 'dist/engine.wasm'))), manifest.files['dist/engine.wasm'].sha256);
+const out = resolve(values.out ?? join(root, 'output/engine-paint'));
+await mkdir(join(out, '..'), { recursive: true });
+await mkdir(out);
+const report = { schema: 'fullbleed.javascript.engine-paint.renders.v1', ok: false,
+  packageVersion: version, engineVersion, node: process.version, platform: process.platform,
+  sourceSha256: hash(await readFile(join(root, 'test/fixtures/engine-paint-2.5.28.json'))),
+  wasmSha256: manifest.files['dist/engine.wasm'].sha256, installedTarballSha256: packed?.tarballSha256 ?? null, cases: [] };
+try {
+  for (const isolation of ['worker', 'process']) {
+    for (const { name, pages, ...input } of enginePaintFixtures) {
+      const directory = isolation + '-' + name;
+      const folder = join(out, directory);
+      await mkdir(folder);
+      await writeFile(join(folder, 'input.html'), input.html);
+      await writeFile(join(folder, 'style.css'), input.css);
+      const result = await renderPdf({ ...input, isolation });
+      assert.equal(result.engineVersion, engineVersion, name);
+      assert.equal(result.missingGlyphs, 0, name);
+      assert.equal(result.pages, pages, name);
+      assert.equal(result.previews.length, pages, name);
+      const repeated = await renderPdf({ ...input, isolation });
+      assert.deepEqual(repeated.pdf, result.pdf, name + ' repeated PDF');
+      assert.deepEqual(repeated.previews, result.previews, name + ' repeated previews');
+      await writeFile(join(folder, 'document.pdf'), result.pdf);
+      for (const [index, png] of result.previews.entries()) await writeFile(join(folder, `preview-${index + 1}.png`), png);
+      const entry = { name, isolation, directory, pages: result.pages, pdfSha256: hash(result.pdf),
+        previewsSha256: result.previews.map(hash), repeatPdfBytesIdentical: true, repeatPreviewBytesIdentical: true };
+      if (isolation === 'process') {
+        const worker = report.cases.find(row => row.name === name && row.isolation === 'worker');
+        assert.equal(entry.pdfSha256, worker.pdfSha256, name + ' worker/process PDF');
+        assert.deepEqual(entry.previewsSha256, worker.previewsSha256, name + ' worker/process previews');
+      }
+      report.cases.push(entry);
+    }
+  }
+  report.ok = true;
+} finally {
+  await writeFile(join(out, 'renders.json'), JSON.stringify(report, null, 2) + '\n');
+}
+console.log(JSON.stringify({ ok: report.ok, packageVersion: version, engineVersion, cases: report.cases.length }));
diff --git a/tools/verify-engine-paint.py b/tools/verify-engine-paint.py
new file mode 100644
index 0000000..9f8f471
--- /dev/null
+++ b/tools/verify-engine-paint.py
@@ -0,0 +1,169 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MIT
+"""Inspect JavaScript PDFs and previews against specified SVG/shadow paint."""
+from contextlib import closing
+from datetime import datetime, timezone
+from hashlib import sha256
+from importlib.metadata import version
+import argparse
+import json
+import math
+from pathlib import Path
+
+from PIL import Image, ImageChops
+from pypdf import PdfReader
+import pypdfium2 as pdfium
+
+ROOT = Path(__file__).resolve().parents[1]
+SOURCE = ROOT / 'test/fixtures/engine-paint-2.5.28.json'
+
+
+def digest(path):
+    return sha256(path.read_bytes()).hexdigest()
+
+
+def inspect_case(case, pdf, preview, destination):
+    checks = []
+    def check(name, ok, **details):
+        checks.append(dict(name=name, ok=bool(ok), **details))
+    reader = PdfReader(pdf)
+    expected = case['expected']
+    check('PDF page count', len(reader.pages) == case['pages'])
+    check('PDF text', [' '.join(page.extract_text().split()) for page in reader.pages] == [expected['text']])
+    with closing(pdfium.PdfDocument(pdf)) as document:
+        check('independent PDF page count', len(document) == 1)
+        assert len(document) == 1
+        with closing(document[0]) as page:
+            size = list(page.get_size())
+            check('physical page size', all(abs(a-b) < .01 for a, b in zip(size, expected['pageSizePt'])), actual=size)
+            with closing(page.get_textpage()) as text:
+                check('independent text', ' '.join(text.get_text_range().split()) == expected['text'])
+                outside = []
+                for index in range(text.count_chars()):
+                    if not text.get_text_range(index, 1).strip():
+                        continue
+                    left, bottom, right, top = text.get_charbox(index)
+                    if not (-1 <= left <= right <= size[0]+1 and -1 <= bottom <= top <= size[1]+1):
+                        outside.append([index, left, bottom, right, top])
+                check('text stays on paper', not outside, outside=outside)
+            with closing(page.render(scale=case['previewDpi']/72)) as bitmap:
+                independent = bitmap.to_pil().convert('RGB')
+    with Image.open(preview) as image:
+        native = image.convert('RGB')
+    try:
+        independent.save(destination / 'pdfium-1.png')
+        wanted_size = [math.ceil(n * case['previewDpi'] / 72) for n in expected['pageSizePt']]
+        for mode, image in [('preview', native), ('pdfium', independent)]:
+            # Independent PDF rasterizers can ceil a fractional device edge.
+            check(mode + ' dimensions', all(abs(a-b) <= 1 for a,b in zip(image.size, wanted_size)), actual=list(image.size))
+            for probe in expected['probes']:
+                x = math.floor((probe['x'] + .5) * case['previewDpi'] / 96)
+                y = math.floor((probe['y'] + .5) * case['previewDpi'] / 96)
+                color = list(image.getpixel((x, y)))
+                check(mode + ' color', max(abs(a-b) for a,b in zip(color, probe['expected'])) <= probe['tolerance'],
+                    x=x, y=y, actual=color, expected=probe['expected'], tolerance=probe['tolerance'])
+    finally:
+        independent.close()
+        native.close()
+    return checks
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('out', type=Path, nargs='?', default=ROOT / 'output/engine-paint')
+    parser.add_argument('--browser', action='store_true')
+    parser.add_argument('--negative-control', action='store_true')
+    args = parser.parse_args()
+    assert not (args.browser and args.negative_control)
+    source = json.loads(SOURCE.read_text(encoding='utf-8'))
+    cases = {case['name']: case for case in source['cases']}
+    assert len(cases) == len(source['cases'])
+    out = args.out.resolve()
+    origin = json.loads((out / ('verification.json' if args.browser else 'renders.json')).read_text(encoding='utf-8'))
+    assert origin['ok']
+    source_hash = digest(SOURCE)
+    if args.browser:
+        assert origin['enginePaintSourceSha256'] == source_hash
+        downloads = {item['file']: item for item in origin['documents']}
+        assert len(downloads) == len(origin['documents'])
+        records = [dict(name=name, isolation='browser', directory=name, pages=case['pages']) for name,case in cases.items()]
+        package, engine = origin['package'], origin['engine']
+    else:
+        assert origin['sourceSha256'] == source_hash
+        records = origin['cases']
+        assert len(records) == len(cases)*2
+        assert {(row['name'], row['isolation']) for row in records} == {(name, mode) for name in cases for mode in ('worker', 'process')}
+        package, engine = origin['packageVersion'], origin['engineVersion']
+    if args.negative_control:
+        assert (package, engine) == (source['negativeControl']['packageVersion'], source['negativeControl']['engineVersion'])
+    else:
+        assert engine == source['engineVersion']
+    report = dict(schema='fullbleed.javascript.engine-paint.verification.v1', ok=False,
+        checkedAt=datetime.now(timezone.utc).isoformat(), packageVersion=package, engineVersion=engine,
+        sourceSha256=source_hash, installedTarballSha256=origin.get('installedTarballSha256'),
+        wasmSha256=origin.get('wasmSha256'), negativeControl=args.negative_control, browser=args.browser,
+        tools={name: version(name) for name in ('pypdf', 'pypdfium2', 'pillow')}, cases=[],
+        scope='Specified colors, opacity/cascade controls, Gaussian blur probes, clear regions at 300 DPI, text and page bounds. No complete CSS/browser parity or standards claim.')
+    located = {}
+    try:
+        for record in records:
+            name, mode = record['name'], record['isolation']
+            case = cases[name]
+            destination = (out / record['directory']).resolve()
+            assert destination.is_relative_to(out)
+            destination.mkdir(exist_ok=True)
+            pdf = out / (name + '.pdf') if args.browser else destination / 'document.pdf'
+            preview = out / (name + '-1.png') if args.browser else destination / 'preview-1.png'
+            if args.browser:
+                for path in (pdf, preview):
+                    receipt = downloads[path.name]
+                    assert path.stat().st_size == receipt['bytes'] and digest(path) == receipt['sha256']
+            else:
+                assert record['repeatPdfBytesIdentical'] and record['repeatPreviewBytesIdentical']
+                assert digest(pdf) == record['pdfSha256'] and [digest(preview)] == record['previewsSha256']
+            try:
+                checks = inspect_case(case, pdf, preview, destination)
+                row = dict(name=name, family=case['family'], isolation=mode, pdfSha256=digest(pdf), checks=checks)
+                row['ok'] = all(check['ok'] for check in checks)
+            except Exception as error:
+                row = dict(name=name, family=case['family'], isolation=mode, ok=False, error=str(error), checks=[])
+            located[(name, mode)] = (preview, destination / 'pdfium-1.png', row)
+            report['cases'].append(row)
+        for (name, mode), (preview, independent, row) in located.items():
+            region = cases[name]['expected'].get('clearRegion')
+            if region is None:
+                continue
+            reference = located[(region['reference'], mode)]
+            for index, (label, actual) in enumerate((('preview', preview), ('pdfium', independent))):
+                with Image.open(actual) as a, Image.open(reference[index]) as b:
+                    assert a.size == b.size
+                    bounds = (region['start'], region['start'], *a.size)
+                    with a.convert('RGB') as rgb_a, b.convert('RGB') as rgb_b:
+                        with rgb_a.crop(bounds) as crop_a, rgb_b.crop(bounds) as crop_b:
+                            with ImageChops.difference(crop_a, crop_b) as difference:
+                                pixels = difference.tobytes()
+                                unequal = sum(any(pixel) for pixel in zip(pixels[0::3], pixels[1::3], pixels[2::3]))
+                    row['checks'].append(dict(name=label + ' complete clear region', ok=unequal == 0,
+                        dpi=300, region=list(bounds), differingPixels=unequal))
+            row['ok'] = all(check['ok'] for check in row['checks']) and 'error' not in row
+        failed = [row for row in report['cases'] if not row['ok']]
+        report['failedFamilies'] = sorted({row['family'] for row in failed})
+        if args.negative_control:
+            required = set(source['negativeControl']['requiredFailingFamilies'])
+            controls = set(source['negativeControl']['passingControls'])
+            report['ok'] = (required <= set(report['failedFamilies'])
+                and not any('error' in row for row in report['cases'])
+                and all(row['ok'] for row in report['cases'] if row['name'] in controls))
+        else:
+            report['ok'] = not failed
+        report['failedCases'] = [row['isolation'] + '/' + row['name'] for row in failed]
+    finally:
+        filename = 'engine-paint.json' if args.browser else 'verification.json'
+        (out / filename).write_text(json.dumps(report, indent=2) + '\n', encoding='utf-8')
+    print(json.dumps(dict(ok=report['ok'], package=package, engine=engine, cases=len(report['cases']),
+        negativeControl=args.negative_control, failed=len(report.get('failedCases', [])), failedFamilies=report.get('failedFamilies'))))
+    assert report['ok'], 'Inspect the retained paint verification report.'
+
+
+if __name__ == '__main__':
+    main()
diff --git a/tools/verify-native.mjs b/tools/verify-native.mjs
index 6407da3..18cf912 100644
--- a/tools/verify-native.mjs
+++ b/tools/verify-native.mjs
@@ -11,6 +11,7 @@ import { inlineFixtures } from '../test/inline-wrapping.mjs';
 import { standardFontFixtures } from '../test/standard-fonts.mjs';
 import { loadEngineRegressionFixtures } from '../test/engine-regressions.mjs';
 import { hiddenTextFixtures } from '../test/hidden-text.mjs';
+import { enginePaintFixtures } from '../test/engine-paint.mjs';
 
 const root = fileURLToPath(new URL('../', import.meta.url));
 const engine = join(root, 'engine');
@@ -28,6 +29,7 @@ fixtures.push(...inlineFixtures);
 fixtures.push(...standardFontFixtures);
 fixtures.push(...await loadEngineRegressionFixtures());
 fixtures.push(...hiddenTextFixtures);
+fixtures.push(...enginePaintFixtures);
 for (const [name, pages] of [['invoice', 1], ['report', 3]]) {
   fixtures.push({ name, pages, html: await readFile(join(root, 'examples', name + '.html'), 'utf8'), css: await readFile(join(root, 'examples', name + '.css'), 'utf8') });
 }
diff --git a/tools/verify-release.py b/tools/verify-release.py
index ba92acb..1a52f84 100644
--- a/tools/verify-release.py
+++ b/tools/verify-release.py
@@ -19,6 +19,7 @@
 HIDDEN_TEXT_SOURCE = ENGINE_REGRESSION_SOURCE.with_name('hidden-text-2.5.24.json')
 COMPONENT_SOURCE = ENGINE_REGRESSION_SOURCE.parents[1] / 'component-cases.mjs'
 HTML_EXPORT_SOURCE = Path(__file__).resolve().parent / 'html-export-fixtures.mjs'
+ENGINE_PAINT_SOURCE = ENGINE_REGRESSION_SOURCE.with_name('engine-paint-2.5.28.json')
 
 
 def require(condition, message):
@@ -59,6 +60,35 @@ def verify_html_export_evidence(report):
             'Installed styled and unstyled HTML evidence is incomplete')
 
 
+def verify_engine_paint_evidence(report):
+    source = ENGINE_PAINT_SOURCE.read_bytes()
+    fixture = json.loads(source)
+    source_sha = hashlib.sha256(source).hexdigest()
+    names = {case['name'] for case in fixture['cases']}
+    families = {case['family'] for case in fixture['cases']}
+    require(report.get('engine_version') == fixture['engineVersion'], 'Paint fixtures target another engine')
+    evidence = report.get('engine_paint', [])
+    require(len(evidence) == 2 and {item.get('platform') for item in evidence} == {'win32', 'linux'},
+            'Paint inspection requires Windows and Linux evidence')
+    require(all(item.get('ok') is True and item.get('package_version') == report['package_version']
+                and item.get('engine_version') == report['engine_version']
+                and item.get('tarball_sha256') == report['package_sha256']
+                and item.get('source_sha256') == source_sha and item.get('negative_control') is False
+                and item.get('cases') == 2*len(names) and set(item.get('families', [])) == families
+                and item.get('case_names') == sorted(names) for item in evidence),
+            'Paint inspection is incomplete or targets another package, tarball, source or negative control')
+    browsers = report.get('browser_matrix', [])
+    require(len(browsers) == 3 and {item.get('browser') for item in browsers} == {'chrome', 'firefox', 'webkit'},
+            'Paint inspection requires all three browser downloads')
+    require(all(item.get('paint_ok') is True and item.get('paint_cases') == len(names)
+                and item.get('paint_source_sha256') == source_sha and item.get('paint_negative_control') is False
+                for item in browsers), 'Browser paint inspection is incomplete or targets another source')
+    native = {item.get('name'): item for item in report.get('native_wasi_fixtures', [])}
+    require(len(native) == len(report.get('native_wasi_fixtures', [])) and names.issubset(native)
+                and all(native[name].get('nativeWasiPdfEqual') is True and native[name].get('nativeWasiPreviewsEqual') is True
+                        for name in names), 'Native/WASI paint comparison is incomplete or duplicated')
+
+
 def verify_binding(version, run_id, run, release, tag_commit, report):
     require(re.fullmatch(r'[0-9]+\.[0-9]+\.[0-9]+', version), 'Use a stable numeric version')
     require(re.fullmatch(r'[0-9]+', run_id), 'Use a numeric CI run ID')
@@ -156,6 +186,8 @@ def verify_binding(version, run_id, run, release, tag_commit, report):
             verify_component_evidence(report)
         if release_version >= (0, 7, 0):
             verify_html_export_evidence(report)
+        if release_version >= (0, 7, 1):
+            verify_engine_paint_evidence(report)
 
 
 def verify_tarball(data, info, report):