From b29485f79d2d82ec44f2305f65a86ba53db95ea9 Mon Sep 17 00:00:00 2001
From: Mike Long <mikeylong@users.noreply.github.com>
Date: Thu, 15 Jan 2026 18:29:39 -0800
Subject: [PATCH 1/2] feat: validate layout.pageFrame via static analysis

---
 .../dist/commands/validate.d.ts.map           |   2 +-
 .../dist/commands/validate.js                 |  56 ++-
 .../dist/descriptors/static-analysis.d.ts.map |   2 +-
 .../dist/descriptors/static-analysis.js       | 326 +++++++++++++++-
 .../interfacectl-cli/docs/layout-pageframe.md | 264 +++++++++++++
 .../interfacectl-cli/src/commands/validate.ts | 144 ++++++-
 .../src/descriptors/static-analysis.ts        | 367 +++++++++++++++++-
 .../src/utils/violation-classifier.ts         |   2 +
 .../clamp-padding/app/globals.css             |   4 +
 .../clamp-padding/app/layout.tsx              |   8 +
 .../fixtures/pageframe-static/contract.json   |  37 ++
 .../pageframe-static/css-rule/app/globals.css |   5 +
 .../pageframe-static/css-rule/app/layout.tsx  |   7 +
 .../inline-styles/app/layout.tsx              |  14 +
 .../maxwidth-fail/app/layout.tsx              |  14 +
 .../missing-marker/app/layout.tsx             |   7 +
 .../pageframe-static/tailwind/app/layout.tsx  |  10 +
 .../test/fixtures/pageframe/contract.json     |  37 ++
 .../test/fixtures/pageframe/failing.html      |  23 ++
 .../test/fixtures/pageframe/passing.html      |  29 ++
 .../test/pageframe-static.test.mjs            | 136 +++++++
 .../test/pageframe-validator.test.mjs         |  72 ++++
 .../interfacectl-validator/dist/index.d.ts    |   2 +-
 .../dist/index.d.ts.map                       |   2 +-
 packages/interfacectl-validator/dist/index.js | 156 +++++++-
 .../interfacectl-validator/dist/types.d.ts    |  20 +-
 .../dist/types.d.ts.map                       |   2 +-
 27 files changed, 1709 insertions(+), 39 deletions(-)
 create mode 100644 packages/interfacectl-cli/docs/layout-pageframe.md
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/globals.css
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/contract.json
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/globals.css
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/inline-styles/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/maxwidth-fail/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/missing-marker/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe-static/tailwind/app/layout.tsx
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe/contract.json
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe/failing.html
 create mode 100644 packages/interfacectl-cli/test/fixtures/pageframe/passing.html
 create mode 100644 packages/interfacectl-cli/test/pageframe-static.test.mjs
 create mode 100644 packages/interfacectl-cli/test/pageframe-validator.test.mjs

diff --git a/packages/interfacectl-cli/dist/commands/validate.d.ts.map b/packages/interfacectl-cli/dist/commands/validate.d.ts.map
index e1d5039..bac0d41 100644
--- a/packages/interfacectl-cli/dist/commands/validate.d.ts.map
+++ b/packages/interfacectl-cli/dist/commands/validate.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"validate.d.ts","sourceRoot":"","sources":["../../src/commands/validate.ts"],"names":[],"mappings":"AAeA,OAAO,EAAsB,KAAK,eAAe,EAAE,MAAM,wBAAwB,CAAC;AAOlF,KAAK,YAAY,GAAG,MAAM,GAAG,MAAM,CAAC;AAmCpC,MAAM,WAAW,sBAAsB;IACrC,YAAY,CAAC,EAAE,MAAM,CAAC;IACtB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,cAAc,CAAC,EAAE,MAAM,EAAE,CAAC;IAC1B,YAAY,CAAC,EAAE,YAAY,CAAC;IAC5B,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,SAAS,CAAC,EAAE,eAAe,CAAC;CAC7B;AAED,wBAAsB,kBAAkB,CACtC,OAAO,EAAE,sBAAsB,GAC9B,OAAO,CAAC,MAAM,CAAC,CAiQjB"}
\ No newline at end of file
+{"version":3,"file":"validate.d.ts","sourceRoot":"","sources":["../../src/commands/validate.ts"],"names":[],"mappings":"AAeA,OAAO,EAAsB,KAAK,eAAe,EAAE,MAAM,wBAAwB,CAAC;AAOlF,KAAK,YAAY,GAAG,MAAM,GAAG,MAAM,CAAC;AAmCpC,MAAM,WAAW,sBAAsB;IACrC,YAAY,CAAC,EAAE,MAAM,CAAC;IACtB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,cAAc,CAAC,EAAE,MAAM,EAAE,CAAC;IAC1B,YAAY,CAAC,EAAE,YAAY,CAAC;IAC5B,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,SAAS,CAAC,EAAE,eAAe,CAAC;CAC7B;AAED,wBAAsB,kBAAkB,CACtC,OAAO,EAAE,sBAAsB,GAC9B,OAAO,CAAC,MAAM,CAAC,CAwQjB"}
\ No newline at end of file
diff --git a/packages/interfacectl-cli/dist/commands/validate.js b/packages/interfacectl-cli/dist/commands/validate.js
index ba4e870..0c5fb5e 100644
--- a/packages/interfacectl-cli/dist/commands/validate.js
+++ b/packages/interfacectl-cli/dist/commands/validate.js
@@ -126,15 +126,19 @@ export async function runValidateCommand(options) {
         };
     if (!structureResult.ok || !structureResult.contract) {
         if (!isJson) {
-            printHeader(pc.red("✖ Contract structure validation failed"), textReporter);
+            printHeader(pc.red("✖ Contract schema validation failed (capability gap)"), textReporter);
+            textReporter.error(pc.dim("Schema validation errors indicate the contract structure is not supported by this version of interfacectl."));
             for (const error of structureResult.errors) {
                 textReporter.error(pc.red(`  • ${error}`));
             }
         }
         else {
             for (const error of structureResult.errors) {
+                // Check if this is an additionalProperties error (capability gap)
+                const isCapabilityGap = error.includes("Additional property") ||
+                    error.includes("is not allowed");
                 findings.push({
-                    code: "contract.schema-error",
+                    code: isCapabilityGap ? "contract.schema-unsupported-field" : "contract.schema-error",
                     severity: "error",
                     category: "E0",
                     message: error,
@@ -272,6 +276,12 @@ function mapViolationsToFindings(summary) {
         "layout-width-exceeded": "layout.width-exceeded",
         "layout-width-undetermined": "layout.width-undetermined",
         "layout-container-missing": "layout.container-missing",
+        "layout-pageframe-container-not-found": "layout.pageframe.container-not-found",
+        "layout-pageframe-maxwidth-mismatch": "layout.pageframe.maxwidth-mismatch",
+        "layout-pageframe-padding-mismatch": "layout.pageframe.padding-mismatch",
+        "layout-pageframe-selector-unsupported": "layout.pageframe.selector-unsupported",
+        "layout-pageframe-non-deterministic-value": "layout.pageframe.non-deterministic-value",
+        "layout-pageframe-unextractable-value": "layout.pageframe.unextractable-value",
         "motion-duration-not-allowed": "motion.duration",
         "motion-timing-not-allowed": "motion.timing",
     };
@@ -331,6 +341,45 @@ function mapViolationsToFindings(summary) {
                         details.missingContainers ?? details.containerSources;
                     break;
                 }
+                case "layout-pageframe-selector-unsupported": {
+                    finding.expected = details.supportedSelectors;
+                    finding.found = details.selector;
+                    break;
+                }
+                case "layout-pageframe-container-not-found": {
+                    finding.expected = details.selector;
+                    finding.found = null;
+                    break;
+                }
+                case "layout-pageframe-maxwidth-mismatch": {
+                    finding.expected = details.expected;
+                    finding.found = details.actual;
+                    break;
+                }
+                case "layout-pageframe-padding-mismatch": {
+                    finding.expected = details.expected;
+                    finding.found = {
+                        left: details.actualLeft,
+                        right: details.actualRight,
+                    };
+                    break;
+                }
+                case "layout-pageframe-non-deterministic-value": {
+                    finding.expected = details.expected;
+                    finding.found = details.actual ?? {
+                        left: details.actualLeft,
+                        right: details.actualRight,
+                    };
+                    break;
+                }
+                case "layout-pageframe-unextractable-value": {
+                    finding.expected = details.expected;
+                    finding.found = details.actual ?? {
+                        left: details.actualLeft,
+                        right: details.actualRight,
+                    };
+                    break;
+                }
                 case "motion-duration-not-allowed": {
                     finding.expected = details.allowedDurations;
                     finding.found = details.durationMs;
@@ -442,7 +491,8 @@ function printSummary(summary, output) {
         }
         return;
     }
-    printHeader(pc.red("✖ Contract violations detected"), output);
+    printHeader(pc.red("✖ Surface compliance violations detected"), output);
+    output.log(pc.dim("Compliance violations indicate surfaces do not match the contract requirements."));
     for (const report of summary.surfaceReports) {
         if (report.violations.length === 0) {
             output.log(pc.green(`  • ${report.surfaceId}: OK`));
diff --git a/packages/interfacectl-cli/dist/descriptors/static-analysis.d.ts.map b/packages/interfacectl-cli/dist/descriptors/static-analysis.d.ts.map
index 989948e..52d29ba 100644
--- a/packages/interfacectl-cli/dist/descriptors/static-analysis.d.ts.map
+++ b/packages/interfacectl-cli/dist/descriptors/static-analysis.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"static-analysis.d.ts","sourceRoot":"","sources":["../../src/descriptors/static-analysis.ts"],"names":[],"mappings":"AAGA,OAAO,EACL,KAAK,iBAAiB,EACtB,KAAK,iBAAiB,EAMvB,MAAM,kCAAkC,CAAC;AAiC1C,MAAM,WAAW,eAAe;IAC9B,SAAS,CAAC,EAAE,MAAM,CAAC;IACnB,IAAI,EAAE,MAAM,CAAC;IACb,OAAO,EAAE,MAAM,CAAC;IAChB,QAAQ,CAAC,EAAE,MAAM,CAAC;CACnB;AAED,MAAM,WAAW,gCAAgC;IAC/C,aAAa,EAAE,MAAM,CAAC;IACtB,QAAQ,EAAE,iBAAiB,CAAC;IAC5B,cAAc,EAAE,GAAG,CAAC,MAAM,CAAC,CAAC;IAC5B,cAAc,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;CACrC;AAED,MAAM,WAAW,+BAA+B;IAC9C,WAAW,EAAE,iBAAiB,EAAE,CAAC;IACjC,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,MAAM,EAAE,eAAe,EAAE,CAAC;CAC3B;AAED,wBAAsB,yBAAyB,CAC7C,OAAO,EAAE,gCAAgC,GACxC,OAAO,CAAC,+BAA+B,CAAC,CAyC1C"}
\ No newline at end of file
+{"version":3,"file":"static-analysis.d.ts","sourceRoot":"","sources":["../../src/descriptors/static-analysis.ts"],"names":[],"mappings":"AAGA,OAAO,EACL,KAAK,iBAAiB,EACtB,KAAK,iBAAiB,EAOvB,MAAM,kCAAkC,CAAC;AA4D1C,MAAM,WAAW,eAAe;IAC9B,SAAS,CAAC,EAAE,MAAM,CAAC;IACnB,IAAI,EAAE,MAAM,CAAC;IACb,OAAO,EAAE,MAAM,CAAC;IAChB,QAAQ,CAAC,EAAE,MAAM,CAAC;CACnB;AAED,MAAM,WAAW,gCAAgC;IAC/C,aAAa,EAAE,MAAM,CAAC;IACtB,QAAQ,EAAE,iBAAiB,CAAC;IAC5B,cAAc,EAAE,GAAG,CAAC,MAAM,CAAC,CAAC;IAC5B,cAAc,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;CACrC;AAED,MAAM,WAAW,+BAA+B;IAC9C,WAAW,EAAE,iBAAiB,EAAE,CAAC;IACjC,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,MAAM,EAAE,eAAe,EAAE,CAAC;CAC3B;AAED,wBAAsB,yBAAyB,CAC7C,OAAO,EAAE,gCAAgC,GACxC,OAAO,CAAC,+BAA+B,CAAC,CA0C1C"}
\ No newline at end of file
diff --git a/packages/interfacectl-cli/dist/descriptors/static-analysis.js b/packages/interfacectl-cli/dist/descriptors/static-analysis.js
index d71dd4a..28c3a91 100644
--- a/packages/interfacectl-cli/dist/descriptors/static-analysis.js
+++ b/packages/interfacectl-cli/dist/descriptors/static-analysis.js
@@ -4,6 +4,30 @@ import { globby } from "globby";
 const SECTION_ATTRIBUTE_REGEX = /data-(?:contract-)?section\s*=\s*(?:"([^"]+)"|'([^']+)'|{`([^`]+)`}|{\s*["'`]([^"'`]+)["'`]\s*})/g;
 const CONTAINER_ATTRIBUTE_REGEX = /data-contract-container\s*=\s*(?:"([^"]+)"|'([^']+)'|{`([^`]+)`}|{\s*["'`]([^"'`]+)["'`]\s*})/g;
 const CONTRACT_CONTAINER_TOKEN = "contract-container";
+const PAGE_CONTAINER_ATTRIBUTE_REGEX = /data-contract\s*=\s*(?:"page-container"|'page-container'|{`page-container`}|{\s*["'`]page-container["'`]\s*})/g;
+// Inline style extraction
+const INLINE_STYLE_REGEX = /style\s*=\s*(?:"([^"]+)"|'([^']+)'|{`([^`]+)`}|{\s*["'`]([^"'`]+)["'`]\s*})/g;
+const INLINE_MAX_WIDTH_REGEX = /max-width\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_LEFT_REGEX = /padding-left\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_RIGHT_REGEX = /padding-right\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_INLINE_REGEX = /padding-inline\s*:\s*([0-9.]+)\s*px/gi;
+// CSS rule extraction for [data-contract="page-container"]
+const CSS_SELECTOR_PAGE_CONTAINER_REGEX = /\[data-contract\s*=\s*["']page-container["']\]\s*\{([^}]+)\}/gi;
+const CSS_MAX_WIDTH_REGEX = /max-width\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_LEFT_REGEX = /padding-left\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_RIGHT_REGEX = /padding-right\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_INLINE_REGEX = /padding-inline\s*:\s*([0-9.]+)\s*px/gi;
+// Tailwind class extraction (best-effort)
+const TAILWIND_MAX_WIDTH_REGEX = /max-w-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_X_REGEX = /px-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_LEFT_REGEX = /pl-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_RIGHT_REGEX = /pr-\[([0-9.]+)px\]/gi;
+// Non-deterministic value detection
+const CLAMP_REGEX = /clamp\s*\(/i;
+const CALC_REGEX = /calc\s*\(/i;
+// Optional CSS custom properties (fallback)
+const PAGE_FRAME_MAX_WIDTH_VAR_REGEX = /--contract-page-frame-max-width\s*:\s*([0-9.]+)\s*px/i;
+const PAGE_FRAME_PADDING_VAR_REGEX = /--contract-page-frame-padding-x\s*:\s*([0-9.]+)\s*px/i;
 const COMMON_GLOBBY_IGNORES = [
     "**/node_modules/**",
     "**/.next/**",
@@ -41,7 +65,7 @@ export async function collectSurfaceDescriptors(options) {
             });
             continue;
         }
-        const descriptorResult = await extractSurfaceDescriptor(options.workspaceRoot, surfaceRoot, surface.id);
+        const descriptorResult = await extractSurfaceDescriptor(options.workspaceRoot, surfaceRoot, surface.id, surface);
         structuralDescriptors.push(descriptorResult.descriptor);
         warnings.push(...descriptorResult.warnings);
         errors.push(...descriptorResult.errors);
@@ -55,7 +79,7 @@ function resolveSurfaceRoot(workspaceRoot, surface, surfaceRootMap) {
     }
     return path.join(workspaceRoot, "apps", surface.id);
 }
-async function extractSurfaceDescriptor(workspaceRoot, surfaceRoot, surfaceId) {
+async function extractSurfaceDescriptor(workspaceRoot, surfaceRoot, surfaceId, surface) {
     const warnings = [];
     const errors = [];
     const sectionFiles = await globby(["app/**/*.{ts,tsx,js,jsx}"], {
@@ -79,7 +103,7 @@ async function extractSurfaceDescriptor(workspaceRoot, surfaceRoot, surfaceId) {
         gitignore: true,
         ignore: COMMON_GLOBBY_IGNORES,
     });
-    const layout = await extractLayout(layoutCssFiles, sectionFiles, workspaceRoot, fileContentCache);
+    const layout = await extractLayout(layoutCssFiles, sectionFiles, workspaceRoot, fileContentCache, surface);
     const fonts = await extractFonts(surfaceRoot, sectionFiles, workspaceRoot, fileContentCache);
     if (fonts.length === 0) {
         const globalsPath = path.join(surfaceRoot, "app", "globals.css");
@@ -183,7 +207,7 @@ async function extractColors(surfaceRoot, cssFilePaths, sectionFiles, workspaceR
     }
     return [...colorValues.values()].sort((a, b) => a.value.localeCompare(b.value));
 }
-async function extractLayout(cssFilePaths, sectionFiles, workspaceRoot, fileContentCache) {
+async function extractLayout(cssFilePaths, sectionFiles, workspaceRoot, fileContentCache, surface) {
     let maxWidth = null;
     let layoutSource;
     for (const cssPath of cssFilePaths) {
@@ -211,11 +235,305 @@ async function extractLayout(cssFilePaths, sectionFiles, workspaceRoot, fileCont
             containerSources.add(path.relative(workspaceRoot, filePath));
         }
     }
+    // Extract pageFrame layout if contract defines it
+    let pageFrame;
+    if (surface?.layout.pageFrame) {
+        pageFrame = await extractPageFrameLayout(cssFilePaths, sectionFiles, workspaceRoot, fileContentCache, surface.layout.pageFrame);
+    }
     return {
         maxContentWidth: maxWidth,
         containers: [...containers].sort(),
         containerSources: [...containerSources].sort(),
         source: layoutSource,
+        pageFrame,
+    };
+}
+async function extractPageFrameLayout(cssFilePaths, sectionFiles, workspaceRoot, fileContentCache, pageFrameContract) {
+    if (!pageFrameContract) {
+        return undefined;
+    }
+    const containerSelector = pageFrameContract.containerSelector;
+    // Check if selector is supported (v1 only supports data-contract="page-container")
+    const isSupportedSelector = containerSelector === '[data-contract="page-container"]' ||
+        containerSelector === "[data-contract='page-container']" ||
+        containerSelector === '[data-contract={page-container}]';
+    if (!isSupportedSelector) {
+        // Return undefined to trigger selectorUnsupported violation
+        return undefined;
+    }
+    // Check if page-container marker exists in source files
+    let containerFound = false;
+    let containerSource;
+    let containerFileContent;
+    for (const filePath of sectionFiles) {
+        const content = await readFileCached(filePath, fileContentCache);
+        // Reset regex state
+        PAGE_CONTAINER_ATTRIBUTE_REGEX.lastIndex = 0;
+        if (PAGE_CONTAINER_ATTRIBUTE_REGEX.test(content)) {
+            containerFound = true;
+            containerSource = path.relative(workspaceRoot, filePath);
+            containerFileContent = content;
+            break;
+        }
+    }
+    if (!containerFound) {
+        // Container marker not found - return partial descriptor
+        return {
+            containerSelector,
+            maxWidthPx: null,
+            paddingLeftPx: null,
+            paddingRightPx: null,
+            source: undefined,
+            maxWidthHasClampCalc: undefined,
+            paddingHasClampCalc: undefined,
+        };
+    }
+    let maxWidthPx = null;
+    let paddingLeftPx = null;
+    let paddingRightPx = null;
+    let extractionSource;
+    let maxWidthHasClampCalc = false;
+    let paddingHasClampCalc = false;
+    // Strategy A: Extract from inline styles on the marked element
+    if (containerFileContent) {
+        INLINE_STYLE_REGEX.lastIndex = 0;
+        let styleMatch;
+        while ((styleMatch = INLINE_STYLE_REGEX.exec(containerFileContent)) !== null) {
+            const styleContent = styleMatch[1] ?? styleMatch[2] ?? styleMatch[3] ?? styleMatch[4] ?? "";
+            // Extract max-width
+            if (maxWidthPx === null) {
+                INLINE_MAX_WIDTH_REGEX.lastIndex = 0;
+                const maxWidthMatch = INLINE_MAX_WIDTH_REGEX.exec(styleContent);
+                if (maxWidthMatch) {
+                    const maxWidthValue = maxWidthMatch[0];
+                    // Check if this specific max-width value uses clamp/calc
+                    if (CLAMP_REGEX.test(maxWidthValue) || CALC_REGEX.test(maxWidthValue)) {
+                        maxWidthHasClampCalc = true;
+                    }
+                    else {
+                        const value = Number.parseFloat(maxWidthMatch[1]);
+                        if (Number.isFinite(value)) {
+                            maxWidthPx = value;
+                            extractionSource = containerSource;
+                        }
+                    }
+                }
+            }
+            // Extract padding
+            if (paddingLeftPx === null || paddingRightPx === null) {
+                INLINE_PADDING_INLINE_REGEX.lastIndex = 0;
+                const paddingInlineMatch = INLINE_PADDING_INLINE_REGEX.exec(styleContent);
+                if (paddingInlineMatch) {
+                    const paddingValue = paddingInlineMatch[0];
+                    // Check if this specific padding value uses clamp/calc
+                    if (CLAMP_REGEX.test(paddingValue) || CALC_REGEX.test(paddingValue)) {
+                        paddingHasClampCalc = true;
+                    }
+                    else {
+                        const value = Number.parseFloat(paddingInlineMatch[1]);
+                        if (Number.isFinite(value)) {
+                            paddingLeftPx = value;
+                            paddingRightPx = value;
+                            extractionSource = containerSource;
+                        }
+                    }
+                }
+                else {
+                    INLINE_PADDING_LEFT_REGEX.lastIndex = 0;
+                    INLINE_PADDING_RIGHT_REGEX.lastIndex = 0;
+                    const leftMatch = INLINE_PADDING_LEFT_REGEX.exec(styleContent);
+                    const rightMatch = INLINE_PADDING_RIGHT_REGEX.exec(styleContent);
+                    if (leftMatch && rightMatch) {
+                        const leftValueStr = leftMatch[0];
+                        const rightValueStr = rightMatch[0];
+                        // Check if padding values use clamp/calc
+                        if (CLAMP_REGEX.test(leftValueStr) ||
+                            CALC_REGEX.test(leftValueStr) ||
+                            CLAMP_REGEX.test(rightValueStr) ||
+                            CALC_REGEX.test(rightValueStr)) {
+                            paddingHasClampCalc = true;
+                        }
+                        else {
+                            const leftValue = Number.parseFloat(leftMatch[1]);
+                            const rightValue = Number.parseFloat(rightMatch[1]);
+                            if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+                                paddingLeftPx = leftValue;
+                                paddingRightPx = rightValue;
+                                extractionSource = containerSource;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    // Strategy B: Extract from CSS rules targeting [data-contract="page-container"]
+    if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+        for (const cssPath of cssFilePaths) {
+            const cssContent = await readFileCached(cssPath, fileContentCache);
+            CSS_SELECTOR_PAGE_CONTAINER_REGEX.lastIndex = 0;
+            let selectorMatch;
+            while ((selectorMatch = CSS_SELECTOR_PAGE_CONTAINER_REGEX.exec(cssContent)) !== null) {
+                const ruleContent = selectorMatch[1];
+                // Extract max-width (check for clamp/calc in max-width declaration)
+                if (maxWidthPx === null) {
+                    // First check if max-width exists (even with clamp/calc)
+                    const maxWidthDeclMatch = /max-width\s*:\s*([^;]+)/i.exec(ruleContent);
+                    if (maxWidthDeclMatch) {
+                        const maxWidthValue = maxWidthDeclMatch[1].trim();
+                        // Check if this specific max-width value uses clamp/calc
+                        if (CLAMP_REGEX.test(maxWidthValue) || CALC_REGEX.test(maxWidthValue)) {
+                            maxWidthHasClampCalc = true;
+                        }
+                        else {
+                            // Try to extract px value
+                            CSS_MAX_WIDTH_REGEX.lastIndex = 0;
+                            const maxWidthMatch = CSS_MAX_WIDTH_REGEX.exec(ruleContent);
+                            if (maxWidthMatch) {
+                                const value = Number.parseFloat(maxWidthMatch[1]);
+                                if (Number.isFinite(value)) {
+                                    maxWidthPx = value;
+                                    extractionSource = path.relative(workspaceRoot, cssPath);
+                                }
+                            }
+                        }
+                    }
+                }
+                // Extract padding (check for clamp/calc in padding declarations)
+                if (paddingLeftPx === null || paddingRightPx === null) {
+                    // First check if padding-inline exists (even with clamp/calc)
+                    const paddingInlineDeclMatch = /padding-inline\s*:\s*([^;]+)/i.exec(ruleContent);
+                    if (paddingInlineDeclMatch) {
+                        const paddingValue = paddingInlineDeclMatch[1].trim();
+                        // Check if this specific padding value uses clamp/calc
+                        if (CLAMP_REGEX.test(paddingValue) || CALC_REGEX.test(paddingValue)) {
+                            paddingHasClampCalc = true;
+                        }
+                        else {
+                            // Try to extract px value
+                            CSS_PADDING_INLINE_REGEX.lastIndex = 0;
+                            const paddingInlineMatch = CSS_PADDING_INLINE_REGEX.exec(ruleContent);
+                            if (paddingInlineMatch) {
+                                const value = Number.parseFloat(paddingInlineMatch[1]);
+                                if (Number.isFinite(value)) {
+                                    paddingLeftPx = value;
+                                    paddingRightPx = value;
+                                    extractionSource = path.relative(workspaceRoot, cssPath);
+                                }
+                            }
+                        }
+                    }
+                    else {
+                        CSS_PADDING_LEFT_REGEX.lastIndex = 0;
+                        CSS_PADDING_RIGHT_REGEX.lastIndex = 0;
+                        const leftMatch = CSS_PADDING_LEFT_REGEX.exec(ruleContent);
+                        const rightMatch = CSS_PADDING_RIGHT_REGEX.exec(ruleContent);
+                        if (leftMatch && rightMatch) {
+                            const leftValueStr = leftMatch[0];
+                            const rightValueStr = rightMatch[0];
+                            // Check if padding values use clamp/calc
+                            if (CLAMP_REGEX.test(leftValueStr) ||
+                                CALC_REGEX.test(leftValueStr) ||
+                                CLAMP_REGEX.test(rightValueStr) ||
+                                CALC_REGEX.test(rightValueStr)) {
+                                paddingHasClampCalc = true;
+                            }
+                            else {
+                                const leftValue = Number.parseFloat(leftMatch[1]);
+                                const rightValue = Number.parseFloat(rightMatch[1]);
+                                if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+                                    paddingLeftPx = leftValue;
+                                    paddingRightPx = rightValue;
+                                    extractionSource = path.relative(workspaceRoot, cssPath);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    // Strategy C: Extract from Tailwind bracket classes (best-effort, v1)
+    if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+        for (const filePath of sectionFiles) {
+            const content = await readFileCached(filePath, fileContentCache);
+            // Extract max-width from max-w-[NNNpx]
+            if (maxWidthPx === null) {
+                TAILWIND_MAX_WIDTH_REGEX.lastIndex = 0;
+                const maxWidthMatch = TAILWIND_MAX_WIDTH_REGEX.exec(content);
+                if (maxWidthMatch) {
+                    const value = Number.parseFloat(maxWidthMatch[1]);
+                    if (Number.isFinite(value)) {
+                        maxWidthPx = value;
+                        extractionSource = path.relative(workspaceRoot, filePath);
+                    }
+                }
+            }
+            // Extract padding from px-[NNpx] or pl-[NNpx]/pr-[NNpx]
+            if (paddingLeftPx === null || paddingRightPx === null) {
+                TAILWIND_PADDING_X_REGEX.lastIndex = 0;
+                const paddingXMatch = TAILWIND_PADDING_X_REGEX.exec(content);
+                if (paddingXMatch) {
+                    const value = Number.parseFloat(paddingXMatch[1]);
+                    if (Number.isFinite(value)) {
+                        paddingLeftPx = value;
+                        paddingRightPx = value;
+                        extractionSource = path.relative(workspaceRoot, filePath);
+                    }
+                }
+                else {
+                    TAILWIND_PADDING_LEFT_REGEX.lastIndex = 0;
+                    TAILWIND_PADDING_RIGHT_REGEX.lastIndex = 0;
+                    const leftMatch = TAILWIND_PADDING_LEFT_REGEX.exec(content);
+                    const rightMatch = TAILWIND_PADDING_RIGHT_REGEX.exec(content);
+                    if (leftMatch && rightMatch) {
+                        const leftValue = Number.parseFloat(leftMatch[1]);
+                        const rightValue = Number.parseFloat(rightMatch[1]);
+                        if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+                            paddingLeftPx = leftValue;
+                            paddingRightPx = rightValue;
+                            extractionSource = path.relative(workspaceRoot, filePath);
+                        }
+                    }
+                }
+            }
+        }
+    }
+    // Optional: CSS custom properties (fallback, not required)
+    if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+        for (const cssPath of cssFilePaths) {
+            const cssContent = await readFileCached(cssPath, fileContentCache);
+            if (maxWidthPx === null) {
+                const varMatch = cssContent.match(PAGE_FRAME_MAX_WIDTH_VAR_REGEX);
+                if (varMatch) {
+                    const value = Number.parseFloat(varMatch[1]);
+                    if (Number.isFinite(value)) {
+                        maxWidthPx = value;
+                        extractionSource = path.relative(workspaceRoot, cssPath);
+                    }
+                }
+            }
+            if (paddingLeftPx === null || paddingRightPx === null) {
+                const paddingXMatch = cssContent.match(PAGE_FRAME_PADDING_VAR_REGEX);
+                if (paddingXMatch) {
+                    const value = Number.parseFloat(paddingXMatch[1]);
+                    if (Number.isFinite(value)) {
+                        paddingLeftPx = value;
+                        paddingRightPx = value;
+                        extractionSource = path.relative(workspaceRoot, cssPath);
+                    }
+                }
+            }
+        }
+    }
+    return {
+        containerSelector,
+        maxWidthPx,
+        paddingLeftPx,
+        paddingRightPx,
+        source: extractionSource ?? containerSource,
+        maxWidthHasClampCalc: maxWidthHasClampCalc || undefined,
+        paddingHasClampCalc: paddingHasClampCalc || undefined,
     };
 }
 async function extractMotion(cssFilePaths, workspaceRoot, fileContentCache) {
diff --git a/packages/interfacectl-cli/docs/layout-pageframe.md b/packages/interfacectl-cli/docs/layout-pageframe.md
new file mode 100644
index 0000000..253999b
--- /dev/null
+++ b/packages/interfacectl-cli/docs/layout-pageframe.md
@@ -0,0 +1,264 @@
+# Layout Page Frame Validation
+
+The `layout.pageFrame` contract section enables validation of page container layout properties using static analysis of source files.
+
+## What It Validates
+
+The pageFrame validator checks:
+
+- **Container existence**: Verifies the element matching `containerSelector` exists in the DOM (via `data-contract="page-container"` marker)
+- **Max-width**: Compares extracted `max-width` CSS property against `containerMaxWidthPx`
+- **Horizontal padding**: Compares extracted `padding-left` and `padding-right` (or `padding-inline`) against `paddingXpx`
+
+## What It Does Not Validate
+
+- Framework-specific class names as the primary mechanism (Tailwind bracket classes are supported as a fallback)
+- Visual appearance or styling beyond the specified properties
+- Responsive breakpoints or media queries
+- Animation or transition properties
+- Content structure or semantic HTML
+- Values expressed using `clamp()`, `calc()`, or other non-deterministic CSS functions
+
+## Static Analysis v1
+
+The validator uses static analysis to extract deterministic pixel values from source files. It does not require runtime execution or special CSS custom properties.
+
+### Extraction Strategy
+
+The validator extracts values in this priority order:
+
+1. **Inline styles** on the marked element (`data-contract="page-container"`)
+   - Parses `style` attribute for `max-width`, `padding-left`, `padding-right`, or `padding-inline`
+   - Supports px values only
+
+2. **CSS rules** targeting the marker selector
+   - Detects rules like `[data-contract="page-container"] { max-width: ...; padding-inline: ...; }`
+   - Supports px values only
+   - If values use `clamp()` or `calc()`, returns `layout.pageFrame.unextractable-value`
+
+3. **Tailwind bracket classes** (best-effort, v1)
+   - Supports `max-w-[NNNpx]` and `px-[NNpx]` or `pl-[NNpx]/pr-[NNpx]`
+   - If only tokenized classes exist (e.g., `px-6`), returns `layout.pageFrame.unextractable-value` with guidance
+
+4. **CSS custom properties** (optional fallback)
+   - `--contract-page-frame-max-width` and `--contract-page-frame-padding-x`
+   - Not required, but supported if present
+
+### Limitations
+
+Static analysis v1:
+- **Requires deterministic px values** - cannot validate `clamp()`, `calc()`, or responsive expressions
+- **Requires container marker** - element must have `data-contract="page-container"` attribute
+- **Selector support** - v1 only supports `[data-contract="page-container"]` selector
+- **Tailwind classes** - only bracket notation (`max-w-[1200px]`) is supported, not tokenized classes
+
+If values cannot be extracted deterministically, the validator reports `layout.pageFrame.unextractable-value` with guidance on how to express the values.
+
+## Contract Schema
+
+Add `pageFrame` as an optional property within a surface's `layout` section:
+
+```json
+{
+  "surfaces": [
+    {
+      "id": "my-surface",
+      "type": "web",
+      "layout": {
+        "maxContentWidth": 1200,
+        "pageFrame": {
+          "containerSelector": "[data-contract=\"page-container\"]",
+          "containerMaxWidthPx": 1200,
+          "paddingXpx": 24,
+          "alignment": "center",
+          "enforcement": "strict"
+        }
+      }
+    }
+  ]
+}
+```
+
+### Schema Properties
+
+- `containerSelector` (required): CSS selector identifying the primary page container. v1 only supports `[data-contract="page-container"]`
+- `containerMaxWidthPx` (required): Expected max-width in pixels
+- `paddingXpx` (required): Expected horizontal padding (left and right) in pixels
+- `alignment` (optional): `"center"` or `"left"`, defaults to `"center"` (not validated in v1)
+- `enforcement` (optional): `"strict"` or `"warn"`, defaults to `"strict"`
+  - `strict`: Any mismatch causes validation failure (non-zero exit code)
+  - `warn`: Mismatches are reported but exit code is 0
+
+## Implementation Examples
+
+### Inline Styles (Recommended)
+
+```tsx
+<div
+  data-contract="page-container"
+  style={{
+    maxWidth: "1200px",
+    paddingLeft: "24px",
+    paddingRight: "24px",
+  }}
+>
+  {children}
+</div>
+```
+
+### CSS Rule on Marker Selector
+
+```css
+[data-contract="page-container"] {
+  max-width: 1200px;
+  padding-left: 24px;
+  padding-right: 24px;
+}
+```
+
+```tsx
+<div data-contract="page-container" className="page-container">
+  {children}
+</div>
+```
+
+### Tailwind Bracket Classes (Best-Effort)
+
+```tsx
+<div
+  data-contract="page-container"
+  className="max-w-[1200px] px-[24px]"
+>
+  {children}
+</div>
+```
+
+## CLI Usage
+
+Validate pageFrame layouts using static analysis:
+
+```bash
+interfacectl validate \
+  --contract path/to/interface.contract.json \
+  --root path/to/surface
+```
+
+Filter to specific surfaces:
+
+```bash
+interfacectl validate \
+  --contract path/to/interface.contract.json \
+  --root path/to/surface \
+  --surface my-surface
+```
+
+Output in JSON format:
+
+```bash
+interfacectl validate \
+  --contract path/to/interface.contract.json \
+  --root path/to/surface \
+  --format json
+```
+
+## Violation Types
+
+### `layout.pageFrame.selector-unsupported`
+
+The container selector in the contract is not supported in static analysis v1.
+
+**Resolution**: Use `[data-contract="page-container"]` as the selector.
+
+### `layout.pageFrame.container-not-found`
+
+The page container marker (`data-contract="page-container"`) was not found in source files.
+
+**Resolution**: Add `data-contract="page-container"` to the container element.
+
+### `layout.pageFrame.maxwidth-mismatch`
+
+Extracted max-width does not match the expected value.
+
+**Resolution**: Update the max-width to match the contract value.
+
+### `layout.pageFrame.padding-mismatch`
+
+Extracted padding does not match the expected value.
+
+**Resolution**: Update the padding to match the contract value.
+
+### `layout.pageFrame.unextractable-value`
+
+Values could not be extracted deterministically. This occurs when:
+- Values use `clamp()`, `calc()`, or other non-deterministic CSS functions
+- Only tokenized Tailwind classes are used (e.g., `px-6` instead of `px-[24px]`)
+- No matching styles are found in the expected locations
+
+**Resolution**: Express values using:
+- Inline styles with fixed px values
+- CSS rules targeting `[data-contract="page-container"]` with fixed px values
+- Tailwind bracket classes (e.g., `px-[24px]`)
+
+### `layout.pageFrame.non-deterministic-value`
+
+Values were found but use non-deterministic expressions like `clamp()` or `calc()`.
+
+**Resolution**: Replace with fixed px values or use inline styles.
+
+## Example Failure Output
+
+### Text Format
+
+```
+✖ Contract violations detected
+  • my-surface:
+      - Page frame max-width mismatch for surface "my-surface": expected 1200px, found 1400px.
+      - Page frame padding could not be extracted for surface "my-surface". Expected 24px. Static analysis requires deterministic px values.
+```
+
+### JSON Format
+
+```json
+{
+  "contractPath": "path/to/interface.contract.json",
+  "contractVersion": "1.0.0",
+  "summary": {
+    "errors": 2,
+    "warnings": 0
+  },
+  "findings": [
+    {
+      "code": "layout.pageframe.maxwidth-mismatch",
+      "severity": "error",
+      "category": "E2",
+      "surface": "my-surface",
+      "message": "Page frame max-width mismatch for surface \"my-surface\": expected 1200px, found 1400px.",
+      "expected": 1200,
+      "found": 1400,
+      "location": "app/layout.tsx"
+    },
+    {
+      "code": "layout.pageframe.unextractable-value",
+      "severity": "error",
+      "category": "E2",
+      "surface": "my-surface",
+      "message": "Page frame padding could not be extracted for surface \"my-surface\". Expected 24px. Static analysis requires deterministic px values.",
+      "expected": 24,
+      "found": {
+        "left": null,
+        "right": null
+      }
+    }
+  ]
+}
+```
+
+## Exit Codes
+
+- `strict` mode with violations → exit code 1 (v1) or 30 (v2)
+- `warn` mode with violations → exit code 0
+- No violations → exit code 0
+
+## Future Enhancements
+
+Runtime computed validation may be added later via `--url` option, but is not part of v1. The current implementation focuses on deterministic static analysis that works reliably in CI without requiring a running server.
diff --git a/packages/interfacectl-cli/src/commands/validate.ts b/packages/interfacectl-cli/src/commands/validate.ts
index d05bb3e..36bd805 100644
--- a/packages/interfacectl-cli/src/commands/validate.ts
+++ b/packages/interfacectl-cli/src/commands/validate.ts
@@ -220,16 +220,24 @@ export async function runValidateCommand(
   if (!structureResult.ok || !structureResult.contract) {
     if (!isJson) {
       printHeader(
-        pc.red("✖ Contract structure validation failed"),
+        pc.red("✖ Contract schema validation failed (capability gap)"),
         textReporter,
       );
+      textReporter.error(
+        pc.dim(
+          "Schema validation errors indicate the contract structure is not supported by this version of interfacectl.",
+        ),
+      );
       for (const error of structureResult.errors) {
         textReporter.error(pc.red(`  • ${error}`));
       }
     } else {
       for (const error of structureResult.errors) {
+        // Check if this is an additionalProperties error (capability gap)
+        const isCapabilityGap = error.includes("Additional property") || 
+                                error.includes("is not allowed");
         findings.push({
-          code: "contract.schema-error",
+          code: isCapabilityGap ? "contract.schema-unsupported-field" : "contract.schema-error",
           severity: "error",
           category: "E0",
           message: error,
@@ -242,6 +250,29 @@ export async function runValidateCommand(
 
   const contract = structureResult.contract;
 
+  // Check for deprecated allowedColors fields
+  for (let i = 0; i < contract.surfaces.length; i++) {
+    const surface = contract.surfaces[i];
+    if (surface.allowedColors !== undefined) {
+      const finding: JsonFinding = {
+        code: "contract.deprecated-field",
+        severity: "warning",
+        category: "E0",
+        message: `allowedColors is deprecated. Migrate to color.sourceOfTruth + color.rawValues policy.`,
+        location: `/surfaces/${i}/allowedColors`,
+      };
+      findings.push(finding);
+      if (!isJson) {
+        textReporter.warn(
+          pc.yellow(
+            `  • Surface "${surface.id}": allowedColors is deprecated (use color.sourceOfTruth + color.rawValues)`,
+          ),
+        );
+      }
+    }
+  }
+
+
   const surfaceFilters = new Set(
     (options.surfaceFilters ?? []).map((value) => value.trim()),
   );
@@ -292,29 +323,34 @@ export async function runValidateCommand(
   if (!isJson) {
     printSummary(summary, textReporter);
   }
-
   // Determine exit code based on violation categories
   let exitCode: number;
   if (violationFindings.length === 0) {
     exitCode = 0;
   } else {
-    // Find the highest severity category (E2 > E1)
-    let maxCategory: ViolationCategory | null = null;
-    for (const finding of violationFindings) {
-      const category = finding.category;
-      if (category === "E2") {
-        maxCategory = "E2";
-        break; // E2 is highest, no need to continue
-      } else if (category === "E1" && (maxCategory === null || maxCategory === "E1")) {
-        maxCategory = "E1";
+    // Filter to only error-level findings for exit code determination
+    const errorFindings = violationFindings.filter((f) => f.severity === "error");
+    if (errorFindings.length === 0) {
+      exitCode = 0; // Only warnings, don't fail
+    } else {
+      // Find the highest severity category (E2 > E1)
+      let maxCategory: ViolationCategory | null = null;
+      for (const finding of errorFindings) {
+        const category = finding.category;
+        if (category === "E2") {
+          maxCategory = "E2";
+          break; // E2 is highest, no need to continue
+        } else if (category === "E1" && (maxCategory === null || maxCategory === "E1")) {
+          maxCategory = "E1";
+        }
       }
-    }
 
-    if (maxCategory) {
-      exitCode = getExitCodeForCategory(maxCategory, exitCodeVersion);
-    } else {
-      // Fallback (should not happen, but handle gracefully)
-      exitCode = exitCodeVersion === "v2" ? 30 : 1;
+      if (maxCategory) {
+        exitCode = getExitCodeForCategory(maxCategory, exitCodeVersion);
+      } else {
+        // Fallback (should not happen, but handle gracefully)
+        exitCode = exitCodeVersion === "v2" ? 30 : 1;
+      }
     }
 
     // Print deprecation warning for v1
@@ -410,8 +446,16 @@ function mapViolationsToFindings(
     "layout-width-exceeded": "layout.width-exceeded",
     "layout-width-undetermined": "layout.width-undetermined",
     "layout-container-missing": "layout.container-missing",
+    "layout-pageframe-container-not-found": "layout.pageframe.container-not-found",
+    "layout-pageframe-maxwidth-mismatch": "layout.pageframe.maxwidth-mismatch",
+    "layout-pageframe-padding-mismatch": "layout.pageframe.padding-mismatch",
+    "layout-pageframe-selector-unsupported": "layout.pageframe.selector-unsupported",
+    "layout-pageframe-non-deterministic-value": "layout.pageframe.non-deterministic-value",
+    "layout-pageframe-unextractable-value": "layout.pageframe.unextractable-value",
     "motion-duration-not-allowed": "motion.duration",
     "motion-timing-not-allowed": "motion.timing",
+    "color-raw-value-used": "color.raw-value.used",
+    "color-token-namespace-violation": "color.token.namespace.violation",
   };
 
   for (const report of summary.surfaceReports) {
@@ -473,6 +517,45 @@ function mapViolationsToFindings(
             details.missingContainers ?? details.containerSources;
           break;
         }
+        case "layout-pageframe-selector-unsupported": {
+          finding.expected = details.supportedSelectors;
+          finding.found = details.selector;
+          break;
+        }
+        case "layout-pageframe-container-not-found": {
+          finding.expected = details.selector;
+          finding.found = null;
+          break;
+        }
+        case "layout-pageframe-maxwidth-mismatch": {
+          finding.expected = details.expected;
+          finding.found = details.actual;
+          break;
+        }
+        case "layout-pageframe-padding-mismatch": {
+          finding.expected = details.expected;
+          finding.found = {
+            left: details.actualLeft,
+            right: details.actualRight,
+          };
+          break;
+        }
+        case "layout-pageframe-non-deterministic-value": {
+          finding.expected = details.expected;
+          finding.found = details.actual ?? {
+            left: details.actualLeft,
+            right: details.actualRight,
+          };
+          break;
+        }
+        case "layout-pageframe-unextractable-value": {
+          finding.expected = details.expected;
+          finding.found = details.actual ?? {
+            left: details.actualLeft,
+            right: details.actualRight,
+          };
+          break;
+        }
         case "motion-duration-not-allowed": {
           finding.expected = details.allowedDurations;
           finding.found = details.durationMs;
@@ -498,6 +581,26 @@ function mapViolationsToFindings(
           finding.found = violation.surfaceId;
           break;
         }
+        case "color-raw-value-used": {
+          finding.expected = details.allowedValues;
+          finding.found = details.colorValue;
+          // Set severity based on policy: "warn" -> warning, "strict" -> error
+          if (details.policy === "warn") {
+            finding.severity = "warning";
+          } else if (details.policy === "strict") {
+            finding.severity = "error";
+          }
+          break;
+        }
+        case "color-token-namespace-violation": {
+          finding.expected = details.allowedNamespaces;
+          finding.found = details.tokenName;
+          // Token namespace violations are warnings by default
+          finding.severity = "warning";
+          break;
+        }
+        }
+
         default:
           break;
       }
@@ -614,7 +717,10 @@ function printSummary(
     return;
   }
 
-  printHeader(pc.red("✖ Contract violations detected"), output);
+  printHeader(pc.red("✖ Surface compliance violations detected"), output);
+  output.log(
+    pc.dim("Compliance violations indicate surfaces do not match the contract requirements."),
+  );
 
   for (const report of summary.surfaceReports) {
     if (report.violations.length === 0) {
diff --git a/packages/interfacectl-cli/src/descriptors/static-analysis.ts b/packages/interfacectl-cli/src/descriptors/static-analysis.ts
index 60c94c9..9af1522 100644
--- a/packages/interfacectl-cli/src/descriptors/static-analysis.ts
+++ b/packages/interfacectl-cli/src/descriptors/static-analysis.ts
@@ -9,6 +9,7 @@ import {
   type SurfaceLayoutDescriptor,
   type SurfaceMotionDescriptor,
   type SurfaceSectionDescriptor,
+  type PageFrameLayoutDescriptor,
 } from "@surfaces/interfacectl-validator";
 
 const SECTION_ATTRIBUTE_REGEX =
@@ -17,6 +18,33 @@ const SECTION_ATTRIBUTE_REGEX =
 const CONTAINER_ATTRIBUTE_REGEX =
   /data-contract-container\s*=\s*(?:"([^"]+)"|'([^']+)'|{`([^`]+)`}|{\s*["'`]([^"'`]+)["'`]\s*})/g;
 const CONTRACT_CONTAINER_TOKEN = "contract-container";
+const PAGE_CONTAINER_ATTRIBUTE_REGEX =
+  /data-contract\s*=\s*(?:"page-container"|'page-container'|{`page-container`}|{\s*["'`]page-container["'`]\s*})/g;
+// Inline style extraction
+const INLINE_STYLE_REGEX = /style\s*=\s*(?:"([^"]+)"|'([^']+)'|{`([^`]+)`}|{\s*["'`]([^"'`]+)["'`]\s*})/g;
+const INLINE_MAX_WIDTH_REGEX = /max-width\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_LEFT_REGEX = /padding-left\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_RIGHT_REGEX = /padding-right\s*:\s*([0-9.]+)\s*px/gi;
+const INLINE_PADDING_INLINE_REGEX = /padding-inline\s*:\s*([0-9.]+)\s*px/gi;
+// CSS rule extraction for [data-contract="page-container"]
+const CSS_SELECTOR_PAGE_CONTAINER_REGEX = /\[data-contract\s*=\s*["']page-container["']\]\s*\{([^}]+)\}/gi;
+const CSS_MAX_WIDTH_REGEX = /max-width\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_LEFT_REGEX = /padding-left\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_RIGHT_REGEX = /padding-right\s*:\s*([0-9.]+)\s*px/gi;
+const CSS_PADDING_INLINE_REGEX = /padding-inline\s*:\s*([0-9.]+)\s*px/gi;
+// Tailwind class extraction (best-effort)
+const TAILWIND_MAX_WIDTH_REGEX = /max-w-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_X_REGEX = /px-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_LEFT_REGEX = /pl-\[([0-9.]+)px\]/gi;
+const TAILWIND_PADDING_RIGHT_REGEX = /pr-\[([0-9.]+)px\]/gi;
+// Non-deterministic value detection
+const CLAMP_REGEX = /clamp\s*\(/i;
+const CALC_REGEX = /calc\s*\(/i;
+// Optional CSS custom properties (fallback)
+const PAGE_FRAME_MAX_WIDTH_VAR_REGEX =
+  /--contract-page-frame-max-width\s*:\s*([0-9.]+)\s*px/i;
+const PAGE_FRAME_PADDING_VAR_REGEX =
+  /--contract-page-frame-padding-x\s*:\s*([0-9.]+)\s*px/i;
 const COMMON_GLOBBY_IGNORES = [
   "**/node_modules/**",
   "**/.next/**",
@@ -93,11 +121,12 @@ export async function collectSurfaceDescriptors(
       continue;
     }
 
-    const descriptorResult = await extractSurfaceDescriptor(
-      options.workspaceRoot,
-      surfaceRoot,
-      surface.id,
-    );
+  const descriptorResult = await extractSurfaceDescriptor(
+    options.workspaceRoot,
+    surfaceRoot,
+    surface.id,
+    surface,
+  );
 
     structuralDescriptors.push(descriptorResult.descriptor);
     warnings.push(...descriptorResult.warnings);
@@ -123,6 +152,7 @@ async function extractSurfaceDescriptor(
   workspaceRoot: string,
   surfaceRoot: string,
   surfaceId: string,
+  surface?: InterfaceContract["surfaces"][number],
 ): Promise<{
   descriptor: SurfaceDescriptor;
   warnings: DescriptorIssue[];
@@ -165,6 +195,7 @@ async function extractSurfaceDescriptor(
     sectionFiles,
     workspaceRoot,
     fileContentCache,
+    surface,
   );
   const fonts = await extractFonts(
     surfaceRoot,
@@ -354,6 +385,7 @@ async function extractLayout(
   sectionFiles: string[],
   workspaceRoot: string,
   fileContentCache: Map<string, string>,
+  surface?: InterfaceContract["surfaces"][number],
 ): Promise<SurfaceLayoutDescriptor> {
   let maxWidth: number | null = null;
   let layoutSource: string | undefined;
@@ -385,11 +417,336 @@ async function extractLayout(
     }
   }
 
+  // Extract pageFrame layout if contract defines it
+  let pageFrame: PageFrameLayoutDescriptor | undefined;
+  if (surface?.layout.pageFrame) {
+    pageFrame = await extractPageFrameLayout(
+      cssFilePaths,
+      sectionFiles,
+      workspaceRoot,
+      fileContentCache,
+      surface.layout.pageFrame,
+    );
+  }
+
   return {
     maxContentWidth: maxWidth,
     containers: [...containers].sort(),
     containerSources: [...containerSources].sort(),
     source: layoutSource,
+    pageFrame,
+  };
+}
+
+async function extractPageFrameLayout(
+  cssFilePaths: string[],
+  sectionFiles: string[],
+  workspaceRoot: string,
+  fileContentCache: Map<string, string>,
+  pageFrameContract: InterfaceContract["surfaces"][number]["layout"]["pageFrame"],
+): Promise<PageFrameLayoutDescriptor | undefined> {
+  if (!pageFrameContract) {
+    return undefined;
+  }
+
+  const containerSelector = pageFrameContract.containerSelector;
+  
+  // Check if selector is supported (v1 only supports data-contract="page-container")
+  const isSupportedSelector =
+    containerSelector === '[data-contract="page-container"]' ||
+    containerSelector === "[data-contract='page-container']" ||
+    containerSelector === '[data-contract={page-container}]';
+
+  if (!isSupportedSelector) {
+    // Return undefined to trigger selectorUnsupported violation
+    return undefined;
+  }
+
+  // Check if page-container marker exists in source files
+  let containerFound = false;
+  let containerSource: string | undefined;
+  let containerFileContent: string | undefined;
+  for (const filePath of sectionFiles) {
+    const content = await readFileCached(filePath, fileContentCache);
+    // Reset regex state
+    PAGE_CONTAINER_ATTRIBUTE_REGEX.lastIndex = 0;
+    if (PAGE_CONTAINER_ATTRIBUTE_REGEX.test(content)) {
+      containerFound = true;
+      containerSource = path.relative(workspaceRoot, filePath);
+      containerFileContent = content;
+      break;
+    }
+  }
+
+  if (!containerFound) {
+    // Container marker not found - return partial descriptor
+    return {
+      containerSelector,
+      maxWidthPx: null,
+      paddingLeftPx: null,
+      paddingRightPx: null,
+      source: undefined,
+      maxWidthHasClampCalc: undefined,
+      paddingHasClampCalc: undefined,
+    };
+  }
+
+  let maxWidthPx: number | null = null;
+  let paddingLeftPx: number | null = null;
+  let paddingRightPx: number | null = null;
+  let extractionSource: string | undefined;
+  let maxWidthHasClampCalc = false;
+  let paddingHasClampCalc = false;
+
+  // Strategy A: Extract from inline styles on the marked element
+  if (containerFileContent) {
+    INLINE_STYLE_REGEX.lastIndex = 0;
+    let styleMatch: RegExpExecArray | null;
+    while ((styleMatch = INLINE_STYLE_REGEX.exec(containerFileContent)) !== null) {
+      const styleContent =
+        styleMatch[1] ?? styleMatch[2] ?? styleMatch[3] ?? styleMatch[4] ?? "";
+
+      // Extract max-width
+      if (maxWidthPx === null) {
+        INLINE_MAX_WIDTH_REGEX.lastIndex = 0;
+        const maxWidthMatch = INLINE_MAX_WIDTH_REGEX.exec(styleContent);
+        if (maxWidthMatch) {
+          const maxWidthValue = maxWidthMatch[0];
+          // Check if this specific max-width value uses clamp/calc
+          if (CLAMP_REGEX.test(maxWidthValue) || CALC_REGEX.test(maxWidthValue)) {
+            maxWidthHasClampCalc = true;
+          } else {
+            const value = Number.parseFloat(maxWidthMatch[1]);
+            if (Number.isFinite(value)) {
+              maxWidthPx = value;
+              extractionSource = containerSource;
+            }
+          }
+        }
+      }
+
+      // Extract padding
+      if (paddingLeftPx === null || paddingRightPx === null) {
+        INLINE_PADDING_INLINE_REGEX.lastIndex = 0;
+        const paddingInlineMatch = INLINE_PADDING_INLINE_REGEX.exec(styleContent);
+        if (paddingInlineMatch) {
+          const paddingValue = paddingInlineMatch[0];
+          // Check if this specific padding value uses clamp/calc
+          if (CLAMP_REGEX.test(paddingValue) || CALC_REGEX.test(paddingValue)) {
+            paddingHasClampCalc = true;
+          } else {
+            const value = Number.parseFloat(paddingInlineMatch[1]);
+            if (Number.isFinite(value)) {
+              paddingLeftPx = value;
+              paddingRightPx = value;
+              extractionSource = containerSource;
+            }
+          }
+        } else {
+          INLINE_PADDING_LEFT_REGEX.lastIndex = 0;
+          INLINE_PADDING_RIGHT_REGEX.lastIndex = 0;
+          const leftMatch = INLINE_PADDING_LEFT_REGEX.exec(styleContent);
+          const rightMatch = INLINE_PADDING_RIGHT_REGEX.exec(styleContent);
+          if (leftMatch && rightMatch) {
+            const leftValueStr = leftMatch[0];
+            const rightValueStr = rightMatch[0];
+            // Check if padding values use clamp/calc
+            if (
+              CLAMP_REGEX.test(leftValueStr) ||
+              CALC_REGEX.test(leftValueStr) ||
+              CLAMP_REGEX.test(rightValueStr) ||
+              CALC_REGEX.test(rightValueStr)
+            ) {
+              paddingHasClampCalc = true;
+            } else {
+              const leftValue = Number.parseFloat(leftMatch[1]);
+              const rightValue = Number.parseFloat(rightMatch[1]);
+              if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+                paddingLeftPx = leftValue;
+                paddingRightPx = rightValue;
+                extractionSource = containerSource;
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  // Strategy B: Extract from CSS rules targeting [data-contract="page-container"]
+  if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+    for (const cssPath of cssFilePaths) {
+      const cssContent = await readFileCached(cssPath, fileContentCache);
+
+      CSS_SELECTOR_PAGE_CONTAINER_REGEX.lastIndex = 0;
+      let selectorMatch: RegExpExecArray | null;
+      while ((selectorMatch = CSS_SELECTOR_PAGE_CONTAINER_REGEX.exec(cssContent)) !== null) {
+        const ruleContent = selectorMatch[1];
+
+        // Extract max-width (check for clamp/calc in max-width declaration)
+        if (maxWidthPx === null) {
+          // First check if max-width exists (even with clamp/calc)
+          const maxWidthDeclMatch = /max-width\s*:\s*([^;]+)/i.exec(ruleContent);
+          if (maxWidthDeclMatch) {
+            const maxWidthValue = maxWidthDeclMatch[1].trim();
+            // Check if this specific max-width value uses clamp/calc
+            if (CLAMP_REGEX.test(maxWidthValue) || CALC_REGEX.test(maxWidthValue)) {
+              maxWidthHasClampCalc = true;
+            } else {
+              // Try to extract px value
+              CSS_MAX_WIDTH_REGEX.lastIndex = 0;
+              const maxWidthMatch = CSS_MAX_WIDTH_REGEX.exec(ruleContent);
+              if (maxWidthMatch) {
+                const value = Number.parseFloat(maxWidthMatch[1]);
+                if (Number.isFinite(value)) {
+                  maxWidthPx = value;
+                  extractionSource = path.relative(workspaceRoot, cssPath);
+                }
+              }
+            }
+          }
+        }
+
+        // Extract padding (check for clamp/calc in padding declarations)
+        if (paddingLeftPx === null || paddingRightPx === null) {
+          // First check if padding-inline exists (even with clamp/calc)
+          const paddingInlineDeclMatch = /padding-inline\s*:\s*([^;]+)/i.exec(ruleContent);
+          if (paddingInlineDeclMatch) {
+            const paddingValue = paddingInlineDeclMatch[1].trim();
+            // Check if this specific padding value uses clamp/calc
+            if (CLAMP_REGEX.test(paddingValue) || CALC_REGEX.test(paddingValue)) {
+              paddingHasClampCalc = true;
+            } else {
+              // Try to extract px value
+              CSS_PADDING_INLINE_REGEX.lastIndex = 0;
+              const paddingInlineMatch = CSS_PADDING_INLINE_REGEX.exec(ruleContent);
+              if (paddingInlineMatch) {
+                const value = Number.parseFloat(paddingInlineMatch[1]);
+                if (Number.isFinite(value)) {
+                  paddingLeftPx = value;
+                  paddingRightPx = value;
+                  extractionSource = path.relative(workspaceRoot, cssPath);
+                }
+              }
+            }
+          } else {
+            CSS_PADDING_LEFT_REGEX.lastIndex = 0;
+            CSS_PADDING_RIGHT_REGEX.lastIndex = 0;
+            const leftMatch = CSS_PADDING_LEFT_REGEX.exec(ruleContent);
+            const rightMatch = CSS_PADDING_RIGHT_REGEX.exec(ruleContent);
+            if (leftMatch && rightMatch) {
+              const leftValueStr = leftMatch[0];
+              const rightValueStr = rightMatch[0];
+              // Check if padding values use clamp/calc
+              if (
+                CLAMP_REGEX.test(leftValueStr) ||
+                CALC_REGEX.test(leftValueStr) ||
+                CLAMP_REGEX.test(rightValueStr) ||
+                CALC_REGEX.test(rightValueStr)
+              ) {
+                paddingHasClampCalc = true;
+              } else {
+                const leftValue = Number.parseFloat(leftMatch[1]);
+                const rightValue = Number.parseFloat(rightMatch[1]);
+                if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+                  paddingLeftPx = leftValue;
+                  paddingRightPx = rightValue;
+                  extractionSource = path.relative(workspaceRoot, cssPath);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  // Strategy C: Extract from Tailwind bracket classes (best-effort, v1)
+  if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+    for (const filePath of sectionFiles) {
+      const content = await readFileCached(filePath, fileContentCache);
+      
+      // Extract max-width from max-w-[NNNpx]
+      if (maxWidthPx === null) {
+        TAILWIND_MAX_WIDTH_REGEX.lastIndex = 0;
+        const maxWidthMatch = TAILWIND_MAX_WIDTH_REGEX.exec(content);
+        if (maxWidthMatch) {
+          const value = Number.parseFloat(maxWidthMatch[1]);
+          if (Number.isFinite(value)) {
+            maxWidthPx = value;
+            extractionSource = path.relative(workspaceRoot, filePath);
+          }
+        }
+      }
+
+      // Extract padding from px-[NNpx] or pl-[NNpx]/pr-[NNpx]
+      if (paddingLeftPx === null || paddingRightPx === null) {
+        TAILWIND_PADDING_X_REGEX.lastIndex = 0;
+        const paddingXMatch = TAILWIND_PADDING_X_REGEX.exec(content);
+        if (paddingXMatch) {
+          const value = Number.parseFloat(paddingXMatch[1]);
+          if (Number.isFinite(value)) {
+            paddingLeftPx = value;
+            paddingRightPx = value;
+            extractionSource = path.relative(workspaceRoot, filePath);
+          }
+        } else {
+          TAILWIND_PADDING_LEFT_REGEX.lastIndex = 0;
+          TAILWIND_PADDING_RIGHT_REGEX.lastIndex = 0;
+          const leftMatch = TAILWIND_PADDING_LEFT_REGEX.exec(content);
+          const rightMatch = TAILWIND_PADDING_RIGHT_REGEX.exec(content);
+          if (leftMatch && rightMatch) {
+            const leftValue = Number.parseFloat(leftMatch[1]);
+            const rightValue = Number.parseFloat(rightMatch[1]);
+            if (Number.isFinite(leftValue) && Number.isFinite(rightValue)) {
+              paddingLeftPx = leftValue;
+              paddingRightPx = rightValue;
+              extractionSource = path.relative(workspaceRoot, filePath);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  // Optional: CSS custom properties (fallback, not required)
+  if (maxWidthPx === null || paddingLeftPx === null || paddingRightPx === null) {
+    for (const cssPath of cssFilePaths) {
+      const cssContent = await readFileCached(cssPath, fileContentCache);
+      
+      if (maxWidthPx === null) {
+        const varMatch = cssContent.match(PAGE_FRAME_MAX_WIDTH_VAR_REGEX);
+        if (varMatch) {
+          const value = Number.parseFloat(varMatch[1]);
+          if (Number.isFinite(value)) {
+            maxWidthPx = value;
+            extractionSource = path.relative(workspaceRoot, cssPath);
+          }
+        }
+      }
+
+      if (paddingLeftPx === null || paddingRightPx === null) {
+        const paddingXMatch = cssContent.match(PAGE_FRAME_PADDING_VAR_REGEX);
+        if (paddingXMatch) {
+          const value = Number.parseFloat(paddingXMatch[1]);
+          if (Number.isFinite(value)) {
+            paddingLeftPx = value;
+            paddingRightPx = value;
+            extractionSource = path.relative(workspaceRoot, cssPath);
+          }
+        }
+      }
+    }
+  }
+
+  return {
+    containerSelector,
+    maxWidthPx,
+    paddingLeftPx,
+    paddingRightPx,
+    source: extractionSource ?? containerSource,
+    maxWidthHasClampCalc: maxWidthHasClampCalc || undefined,
+    paddingHasClampCalc: paddingHasClampCalc || undefined,
   };
 }
 
diff --git a/packages/interfacectl-cli/src/utils/violation-classifier.ts b/packages/interfacectl-cli/src/utils/violation-classifier.ts
index 52be6f0..90666ae 100644
--- a/packages/interfacectl-cli/src/utils/violation-classifier.ts
+++ b/packages/interfacectl-cli/src/utils/violation-classifier.ts
@@ -17,6 +17,8 @@ export function classifyViolationType(
     "color-not-allowed",
     "motion-duration-not-allowed",
     "motion-timing-not-allowed",
+    "color-raw-value-used",
+    "color-token-namespace-violation",
   ];
 
   if (e1Types.includes(type)) {
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/globals.css b/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/globals.css
new file mode 100644
index 0000000..1aff918
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/globals.css
@@ -0,0 +1,4 @@
+[data-contract="page-container"] {
+  max-width: 1200px;
+  padding-inline: clamp(16px, 2vw, 24px);
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/layout.tsx
new file mode 100644
index 0000000..d8ea5ba
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/clamp-padding/app/layout.tsx
@@ -0,0 +1,8 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div data-contract="page-container" className="page-container">
+      <div data-contract-section="header">Header</div>
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/contract.json b/packages/interfacectl-cli/test/fixtures/pageframe-static/contract.json
new file mode 100644
index 0000000..4efbeb8
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/contract.json
@@ -0,0 +1,37 @@
+{
+  "contractId": "test-pageframe-static",
+  "version": "1.0.0",
+  "surfaces": [
+    {
+      "id": "test-surface",
+      "displayName": "Test Surface",
+      "type": "web",
+      "requiredSections": ["header"],
+      "allowedFonts": ["Inter"],
+      "allowedColors": ["#000000"],
+      "layout": {
+        "maxContentWidth": 1200,
+        "pageFrame": {
+          "containerSelector": "[data-contract=\"page-container\"]",
+          "containerMaxWidthPx": 1200,
+          "paddingXpx": 24,
+          "alignment": "center",
+          "enforcement": "strict"
+        }
+      }
+    }
+  ],
+  "sections": [
+    {
+      "id": "header",
+      "intent": "Page header",
+      "description": "Main page header section"
+    }
+  ],
+  "constraints": {
+    "motion": {
+      "allowedDurationsMs": [200, 300],
+      "allowedTimingFunctions": ["ease", "ease-in-out"]
+    }
+  }
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/globals.css b/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/globals.css
new file mode 100644
index 0000000..68de65b
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/globals.css
@@ -0,0 +1,5 @@
+[data-contract="page-container"] {
+  max-width: 1200px;
+  padding-left: 24px;
+  padding-right: 24px;
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/layout.tsx
new file mode 100644
index 0000000..62612a3
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/css-rule/app/layout.tsx
@@ -0,0 +1,7 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div data-contract="page-container" className="page-container">
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/inline-styles/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/inline-styles/app/layout.tsx
new file mode 100644
index 0000000..86e4931
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/inline-styles/app/layout.tsx
@@ -0,0 +1,14 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div
+      data-contract="page-container"
+      style={{
+        maxWidth: "1200px",
+        paddingLeft: "24px",
+        paddingRight: "24px",
+      }}
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/maxwidth-fail/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/maxwidth-fail/app/layout.tsx
new file mode 100644
index 0000000..099a154
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/maxwidth-fail/app/layout.tsx
@@ -0,0 +1,14 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div
+      data-contract="page-container"
+      style={{
+        maxWidth: "1400px",
+        paddingLeft: "24px",
+        paddingRight: "24px",
+      }}
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/missing-marker/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/missing-marker/app/layout.tsx
new file mode 100644
index 0000000..8e125ef
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/missing-marker/app/layout.tsx
@@ -0,0 +1,7 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div className="container">
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe-static/tailwind/app/layout.tsx b/packages/interfacectl-cli/test/fixtures/pageframe-static/tailwind/app/layout.tsx
new file mode 100644
index 0000000..c8b53cd
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe-static/tailwind/app/layout.tsx
@@ -0,0 +1,10 @@
+export default function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div
+      data-contract="page-container"
+      className="max-w-[1200px] px-[24px]"
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe/contract.json b/packages/interfacectl-cli/test/fixtures/pageframe/contract.json
new file mode 100644
index 0000000..cb5d44d
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe/contract.json
@@ -0,0 +1,37 @@
+{
+  "contractId": "test-pageframe",
+  "version": "1.0.0",
+  "surfaces": [
+    {
+      "id": "test-surface",
+      "displayName": "Test Surface",
+      "type": "web",
+      "requiredSections": ["header"],
+      "allowedFonts": ["Inter"],
+      "allowedColors": ["#000000"],
+      "layout": {
+        "maxContentWidth": 1200,
+        "pageFrame": {
+          "containerSelector": ".container",
+          "containerMaxWidthPx": 1200,
+          "paddingXpx": 24,
+          "alignment": "center",
+          "enforcement": "strict"
+        }
+      }
+    }
+  ],
+  "sections": [
+    {
+      "id": "header",
+      "intent": "Page header",
+      "description": "Main page header section"
+    }
+  ],
+  "constraints": {
+    "motion": {
+      "allowedDurationsMs": [200, 300],
+      "allowedTimingFunctions": ["ease", "ease-in-out"]
+    }
+  }
+}
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe/failing.html b/packages/interfacectl-cli/test/fixtures/pageframe/failing.html
new file mode 100644
index 0000000..4adff72
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe/failing.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Failing Page Frame Test</title>
+  <style>
+    .container {
+      max-width: 1400px; /* Wrong: should be 1200px */
+      padding-left: 32px; /* Wrong: should be 24px */
+      padding-right: 32px; /* Wrong: should be 24px */
+      margin-left: 0; /* Wrong: should be auto for center */
+      margin-right: 0;
+    }
+  </style>
+</head>
+<body>
+  <div class="container">
+    <h1>Test Page</h1>
+    <p>This page should fail pageFrame validation.</p>
+  </div>
+</body>
+</html>
diff --git a/packages/interfacectl-cli/test/fixtures/pageframe/passing.html b/packages/interfacectl-cli/test/fixtures/pageframe/passing.html
new file mode 100644
index 0000000..0798a85
--- /dev/null
+++ b/packages/interfacectl-cli/test/fixtures/pageframe/passing.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Passing Page Frame Test</title>
+  <style>
+    .container {
+      max-width: 1200px;
+      padding-left: 24px;
+      padding-right: 24px;
+      margin-left: auto;
+      margin-right: auto;
+    }
+  </style>
+</head>
+<body>
+  <div class="container">
+    <h1>Test Page</h1>
+    <p>This page should pass pageFrame validation with:</p>
+    <ul>
+      <li>containerSelector: ".container"</li>
+      <li>containerMaxWidthPx: 1200</li>
+      <li>paddingXpx: 24</li>
+      <li>alignment: "center"</li>
+    </ul>
+  </div>
+</body>
+</html>
diff --git a/packages/interfacectl-cli/test/pageframe-static.test.mjs b/packages/interfacectl-cli/test/pageframe-static.test.mjs
new file mode 100644
index 0000000..b1e239a
--- /dev/null
+++ b/packages/interfacectl-cli/test/pageframe-static.test.mjs
@@ -0,0 +1,136 @@
+import { test } from "node:test";
+import assert from "node:assert";
+import { spawn } from "node:child_process";
+import { promisify } from "node:util";
+import path from "node:path";
+import url from "node:url";
+import { readFile } from "node:fs/promises";
+
+const __dirname = url.fileURLToPath(new URL(".", import.meta.url));
+const fixturesDir = path.join(__dirname, "fixtures", "pageframe-static");
+const contractPath = path.join(fixturesDir, "contract.json");
+
+async function runValidate(fixtureName) {
+  const fixtureRoot = path.join(fixturesDir, fixtureName);
+  return new Promise((resolve, reject) => {
+    const proc = spawn(
+      "node",
+      [
+        path.join(__dirname, "..", "dist", "index.js"),
+        "validate",
+        "--contract",
+        contractPath,
+        "--root",
+        fixtureRoot,
+        "--format",
+        "json",
+      ],
+      {
+        cwd: path.join(__dirname, ".."),
+      },
+    );
+
+    let stdout = "";
+    let stderr = "";
+
+    proc.stdout.on("data", (data) => {
+      stdout += data.toString();
+    });
+
+    proc.stderr.on("data", (data) => {
+      stderr += data.toString();
+    });
+
+    proc.on("close", (code) => {
+      resolve({ code, stdout, stderr });
+    });
+
+    proc.on("error", (error) => {
+      reject(error);
+    });
+  });
+}
+
+test("pageFrame validation - inline styles (passing)", async () => {
+  const result = await runValidate("inline-styles");
+  const output = JSON.parse(result.stdout);
+  
+  // Should pass - no pageFrame violations
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  assert.strictEqual(pageFrameViolations.length, 0, "Should have no pageFrame violations");
+  assert.strictEqual(result.code, 0, "Should exit with code 0");
+});
+
+test("pageFrame validation - CSS rule (passing)", async () => {
+  const result = await runValidate("css-rule");
+  const output = JSON.parse(result.stdout);
+  
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  assert.strictEqual(pageFrameViolations.length, 0, "Should have no pageFrame violations");
+  assert.strictEqual(result.code, 0, "Should exit with code 0");
+});
+
+test("pageFrame validation - Tailwind classes (passing)", async () => {
+  const result = await runValidate("tailwind");
+  const output = JSON.parse(result.stdout);
+  
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  assert.strictEqual(pageFrameViolations.length, 0, "Should have no pageFrame violations");
+  assert.strictEqual(result.code, 0, "Should exit with code 0");
+});
+
+test("pageFrame validation - clamp() padding (non-deterministic)", async () => {
+  const result = await runValidate("clamp-padding");
+  const output = JSON.parse(result.stdout);
+  
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  
+  // Should have non-deterministic-value violation for padding (not unextractable-value)
+  const paddingViolation = pageFrameViolations.find(
+    (v) => v.code === "layout.pageframe.non-deterministic-value",
+  );
+  assert.ok(paddingViolation, "Should have non-deterministic-value violation for padding");
+  // Check that the violation details include the property
+  assert.ok(paddingViolation.expected !== undefined, "Violation should have expected value");
+  assert.strictEqual(result.code, 1, "Should exit with code 1 (strict mode)");
+});
+
+test("pageFrame validation - missing marker (container not found)", async () => {
+  const result = await runValidate("missing-marker");
+  const output = JSON.parse(result.stdout);
+  
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  
+  const containerViolation = pageFrameViolations.find(
+    (v) => v.code === "layout.pageframe.container-not-found",
+  );
+  assert.ok(containerViolation, "Should have container-not-found violation");
+  assert.strictEqual(result.code, 1, "Should exit with code 1");
+});
+
+test("pageFrame validation - max-width mismatch (failing)", async () => {
+  const result = await runValidate("maxwidth-fail");
+  const output = JSON.parse(result.stdout);
+  
+  const pageFrameViolations = output.findings.filter((f) =>
+    f.code.startsWith("layout.pageframe."),
+  );
+  
+  const maxWidthViolation = pageFrameViolations.find(
+    (v) => v.code === "layout.pageframe.maxwidth-mismatch",
+  );
+  assert.ok(maxWidthViolation, "Should have maxwidth-mismatch violation");
+  assert.strictEqual(maxWidthViolation.expected, 1200);
+  assert.strictEqual(maxWidthViolation.found, 1400);
+  assert.strictEqual(result.code, 1, "Should exit with code 1");
+});
diff --git a/packages/interfacectl-cli/test/pageframe-validator.test.mjs b/packages/interfacectl-cli/test/pageframe-validator.test.mjs
new file mode 100644
index 0000000..0a14989
--- /dev/null
+++ b/packages/interfacectl-cli/test/pageframe-validator.test.mjs
@@ -0,0 +1,72 @@
+import { test } from "node:test";
+import assert from "node:assert";
+import { readFile } from "node:fs/promises";
+import path from "node:path";
+import url from "node:url";
+import { spawn } from "node:child_process";
+import { promisify } from "node:util";
+
+const __dirname = url.fileURLToPath(new URL(".", import.meta.url));
+const fixturesDir = path.join(__dirname, "fixtures", "pageframe");
+
+// Helper to parse px values (replicate logic from validator)
+function parsePxValue(cssValue) {
+  if (cssValue === "none" || cssValue === "auto") {
+    return null;
+  }
+  const match = cssValue.match(/^([\d.]+)px$/);
+  if (match) {
+    return parseFloat(match[1]);
+  }
+  return null;
+}
+
+test("parsePxValue - valid pixel values", () => {
+  assert.strictEqual(parsePxValue("1200px"), 1200);
+  assert.strictEqual(parsePxValue("0px"), 0);
+  assert.strictEqual(parsePxValue("24.5px"), 24.5);
+  assert.strictEqual(parsePxValue("1000px"), 1000);
+});
+
+test("parsePxValue - invalid values", () => {
+  assert.strictEqual(parsePxValue("auto"), null);
+  assert.strictEqual(parsePxValue("none"), null);
+  assert.strictEqual(parsePxValue("100%"), null);
+  assert.strictEqual(parsePxValue("100"), null);
+  assert.strictEqual(parsePxValue(""), null);
+});
+
+test("parsePxValue - style comparison tolerance", () => {
+  const expected = 1200;
+  const actual1 = 1200;
+  const actual2 = 1201;
+  const actual3 = 1199;
+  const tolerance = 0;
+
+  assert.strictEqual(Math.abs(actual1 - expected) <= tolerance, true);
+  assert.strictEqual(Math.abs(actual2 - expected) <= tolerance, false);
+  assert.strictEqual(Math.abs(actual3 - expected) <= tolerance, false);
+
+  const tolerance2 = 2;
+  assert.strictEqual(Math.abs(actual2 - expected) <= tolerance2, true);
+  assert.strictEqual(Math.abs(actual3 - expected) <= tolerance2, true);
+});
+
+// Integration test with HTML fixtures
+test("pageFrame validation - integration with HTML fixture", async () => {
+  // Create a simple HTTP server fixture
+  const fixturePath = path.join(fixturesDir, "passing.html");
+  
+  // Ensure fixtures directory exists
+  try {
+    await readFile(fixturePath);
+  } catch (error) {
+    // Skip test if fixture doesn't exist yet
+    console.log("Skipping integration test - fixtures not set up");
+    return;
+  }
+
+  // This test would require a running server, so we'll mark it as a placeholder
+  // for now. In a real scenario, we'd start a local server and test against it.
+  assert.ok(true, "Integration test placeholder");
+});
diff --git a/packages/interfacectl-validator/dist/index.d.ts b/packages/interfacectl-validator/dist/index.d.ts
index c1534c2..8049b3e 100644
--- a/packages/interfacectl-validator/dist/index.d.ts
+++ b/packages/interfacectl-validator/dist/index.d.ts
@@ -8,6 +8,6 @@ export interface ContractStructureValidation {
 export declare function validateContractStructure(contractData: unknown, schema: object): ContractStructureValidation;
 export declare function evaluateSurfaceCompliance(contract: InterfaceContract, descriptor: SurfaceDescriptor): SurfaceReport;
 export declare function evaluateContractCompliance(contract: InterfaceContract, descriptors: SurfaceDescriptor[]): ValidationSummary;
-export type { InterfaceContract, ContractSurface, ContractSection, ContractConstraints, SurfaceDescriptor, SurfaceSectionDescriptor, SurfaceFontDescriptor, SurfaceColorDescriptor, SurfaceMotionDescriptor, SurfaceLayoutDescriptor, SurfaceReport, DriftViolation, ValidationSummary, DriftViolationType, DiffOutput, DiffEntry, DiffChangeType, DriftRisk, Severity, SafetyLevel, EnforcementPolicy, EnforcementMode, AutofixRule, FixSummary, FixEntry, FixError, } from "./types.js";
+export type { InterfaceContract, ContractSurface, ContractSection, ContractConstraints, SurfaceDescriptor, SurfaceSectionDescriptor, SurfaceFontDescriptor, SurfaceColorDescriptor, SurfaceMotionDescriptor, SurfaceLayoutDescriptor, PageFrameLayoutDescriptor, SurfaceReport, DriftViolation, ValidationSummary, DriftViolationType, DiffOutput, DiffEntry, DiffChangeType, DriftRisk, Severity, SafetyLevel, EnforcementPolicy, EnforcementMode, AutofixRule, FixSummary, FixEntry, FixError, } from "./types.js";
 export { getBundledDiffSchema, getBundledPolicySchema, getBundledFixSummarySchema, validateDiffOutput, validatePolicy, validateFixSummary, type ValidationResult, } from "./schema-validate.js";
 //# sourceMappingURL=index.d.ts.map
\ No newline at end of file
diff --git a/packages/interfacectl-validator/dist/index.d.ts.map b/packages/interfacectl-validator/dist/index.d.ts.map
index 120703b..a94b421 100644
--- a/packages/interfacectl-validator/dist/index.d.ts.map
+++ b/packages/interfacectl-validator/dist/index.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,iBAAiB,EACjB,iBAAiB,EACjB,aAAa,EACb,iBAAiB,EAIlB,MAAM,YAAY,CAAC;AAOpB,wBAAgB,wBAAwB,IAAI,MAAM,CAEjD;AAED,MAAM,WAAW,2BAA2B;IAC1C,EAAE,EAAE,OAAO,CAAC;IACZ,MAAM,EAAE,MAAM,EAAE,CAAC;IACjB,QAAQ,CAAC,EAAE,iBAAiB,CAAC;CAC9B;AAED,wBAAgB,yBAAyB,CACvC,YAAY,EAAE,OAAO,EACrB,MAAM,EAAE,MAAM,GACb,2BAA2B,CAyB7B;AAED,wBAAgB,yBAAyB,CACvC,QAAQ,EAAE,iBAAiB,EAC3B,UAAU,EAAE,iBAAiB,GAC5B,aAAa,CAyKf;AAED,wBAAgB,0BAA0B,CACxC,QAAQ,EAAE,iBAAiB,EAC3B,WAAW,EAAE,iBAAiB,EAAE,GAC/B,iBAAiB,CA6CnB;AA8BD,YAAY,EACV,iBAAiB,EACjB,eAAe,EACf,eAAe,EACf,mBAAmB,EACnB,iBAAiB,EACjB,wBAAwB,EACxB,qBAAqB,EACrB,sBAAsB,EACtB,uBAAuB,EACvB,uBAAuB,EACvB,aAAa,EACb,cAAc,EACd,iBAAiB,EACjB,kBAAkB,EAClB,UAAU,EACV,SAAS,EACT,cAAc,EACd,SAAS,EACT,QAAQ,EACR,WAAW,EACX,iBAAiB,EACjB,eAAe,EACf,WAAW,EACX,UAAU,EACV,QAAQ,EACR,QAAQ,GACT,MAAM,YAAY,CAAC;AAEpB,OAAO,EACL,oBAAoB,EACpB,sBAAsB,EACtB,0BAA0B,EAC1B,kBAAkB,EAClB,cAAc,EACd,kBAAkB,EAClB,KAAK,gBAAgB,GACtB,MAAM,sBAAsB,CAAC"}
\ No newline at end of file
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,iBAAiB,EACjB,iBAAiB,EACjB,aAAa,EACb,iBAAiB,EAKlB,MAAM,YAAY,CAAC;AAOpB,wBAAgB,wBAAwB,IAAI,MAAM,CAEjD;AAED,MAAM,WAAW,2BAA2B;IAC1C,EAAE,EAAE,OAAO,CAAC;IACZ,MAAM,EAAE,MAAM,EAAE,CAAC;IACjB,QAAQ,CAAC,EAAE,iBAAiB,CAAC;CAC9B;AAED,wBAAgB,yBAAyB,CACvC,YAAY,EAAE,OAAO,EACrB,MAAM,EAAE,MAAM,GACb,2BAA2B,CAyB7B;AAED,wBAAgB,yBAAyB,CACvC,QAAQ,EAAE,iBAAiB,EAC3B,UAAU,EAAE,iBAAiB,GAC5B,aAAa,CA6Tf;AAED,wBAAgB,0BAA0B,CACxC,QAAQ,EAAE,iBAAiB,EAC3B,WAAW,EAAE,iBAAiB,EAAE,GAC/B,iBAAiB,CA6CnB;AAyCD,YAAY,EACV,iBAAiB,EACjB,eAAe,EACf,eAAe,EACf,mBAAmB,EACnB,iBAAiB,EACjB,wBAAwB,EACxB,qBAAqB,EACrB,sBAAsB,EACtB,uBAAuB,EACvB,uBAAuB,EACvB,yBAAyB,EACzB,aAAa,EACb,cAAc,EACd,iBAAiB,EACjB,kBAAkB,EAClB,UAAU,EACV,SAAS,EACT,cAAc,EACd,SAAS,EACT,QAAQ,EACR,WAAW,EACX,iBAAiB,EACjB,eAAe,EACf,WAAW,EACX,UAAU,EACV,QAAQ,EACR,QAAQ,GACT,MAAM,YAAY,CAAC;AAEpB,OAAO,EACL,oBAAoB,EACpB,sBAAsB,EACtB,0BAA0B,EAC1B,kBAAkB,EAClB,cAAc,EACd,kBAAkB,EAClB,KAAK,gBAAgB,GACtB,MAAM,sBAAsB,CAAC"}
\ No newline at end of file
diff --git a/packages/interfacectl-validator/dist/index.js b/packages/interfacectl-validator/dist/index.js
index e1c0eee..305b74a 100644
--- a/packages/interfacectl-validator/dist/index.js
+++ b/packages/interfacectl-validator/dist/index.js
@@ -170,6 +170,148 @@ export function evaluateSurfaceCompliance(contract, descriptor) {
             });
         }
     }
+    // Validate pageFrame layout if contract defines it
+    if (surface.layout.pageFrame && descriptor.layout.pageFrame) {
+        const pageFrameContract = surface.layout.pageFrame;
+        const pageFrameDescriptor = descriptor.layout.pageFrame;
+        const enforcement = pageFrameContract.enforcement ?? "strict";
+        // Check if selector is supported
+        const containerSelector = pageFrameContract.containerSelector;
+        const isSupportedSelector = containerSelector === '[data-contract="page-container"]' ||
+            containerSelector === "[data-contract='page-container']" ||
+            containerSelector === '[data-contract={page-container}]';
+        if (!isSupportedSelector) {
+            const violation = {
+                surfaceId: descriptor.surfaceId,
+                type: "layout-pageframe-selector-unsupported",
+                message: `Page frame container selector "${containerSelector}" is not supported in static analysis. Use '[data-contract="page-container"]' instead.`,
+                details: {
+                    selector: containerSelector,
+                    supportedSelectors: ['[data-contract="page-container"]'],
+                },
+            };
+            violations.push(violation);
+        }
+        else {
+            // Validate container exists
+            if (pageFrameDescriptor.maxWidthPx === null &&
+                pageFrameDescriptor.paddingLeftPx === null &&
+                pageFrameDescriptor.paddingRightPx === null) {
+                violations.push({
+                    surfaceId: descriptor.surfaceId,
+                    type: "layout-pageframe-container-not-found",
+                    message: `Page container with data-contract="page-container" not found for surface "${descriptor.surfaceId}".`,
+                    details: {
+                        selector: containerSelector,
+                        source: pageFrameDescriptor.source,
+                    },
+                });
+            }
+            else {
+                // Validate max-width
+                const expectedMaxWidth = pageFrameContract.containerMaxWidthPx;
+                const actualMaxWidth = pageFrameDescriptor.maxWidthPx;
+                if (actualMaxWidth === null) {
+                    // Check if clamp/calc was detected
+                    if (pageFrameDescriptor.maxWidthHasClampCalc) {
+                        violations.push({
+                            surfaceId: descriptor.surfaceId,
+                            type: "layout-pageframe-non-deterministic-value",
+                            message: `Page frame max-width uses non-deterministic expression (clamp/calc) for surface "${descriptor.surfaceId}". Expected ${expectedMaxWidth}px. Static analysis requires deterministic px values. Use fixed px values in inline styles or CSS rules targeting [data-contract="page-container"].`,
+                            details: {
+                                property: "max-width",
+                                expected: expectedMaxWidth,
+                                actual: null,
+                                selector: containerSelector,
+                                source: pageFrameDescriptor.source,
+                            },
+                        });
+                    }
+                    else {
+                        violations.push({
+                            surfaceId: descriptor.surfaceId,
+                            type: "layout-pageframe-unextractable-value",
+                            message: `Page frame max-width could not be extracted for surface "${descriptor.surfaceId}". Expected ${expectedMaxWidth}px. Use inline styles, CSS rules targeting [data-contract="page-container"], or Tailwind bracket classes (max-w-[${expectedMaxWidth}px]).`,
+                            details: {
+                                property: "max-width",
+                                expected: expectedMaxWidth,
+                                actual: null,
+                                selector: containerSelector,
+                                source: pageFrameDescriptor.source,
+                            },
+                        });
+                    }
+                }
+                else if (actualMaxWidth !== expectedMaxWidth) {
+                    violations.push({
+                        surfaceId: descriptor.surfaceId,
+                        type: "layout-pageframe-maxwidth-mismatch",
+                        message: `Page frame max-width mismatch for surface "${descriptor.surfaceId}": expected ${expectedMaxWidth}px, found ${actualMaxWidth}px.`,
+                        details: {
+                            expected: expectedMaxWidth,
+                            actual: actualMaxWidth,
+                            selector: containerSelector,
+                            source: pageFrameDescriptor.source,
+                        },
+                    });
+                }
+                // Validate padding
+                const expectedPadding = pageFrameContract.paddingXpx;
+                const actualPaddingLeft = pageFrameDescriptor.paddingLeftPx;
+                const actualPaddingRight = pageFrameDescriptor.paddingRightPx;
+                if (actualPaddingLeft === null || actualPaddingRight === null) {
+                    // Check if clamp/calc was detected
+                    if (pageFrameDescriptor.paddingHasClampCalc) {
+                        violations.push({
+                            surfaceId: descriptor.surfaceId,
+                            type: "layout-pageframe-non-deterministic-value",
+                            message: `Page frame padding uses non-deterministic expression (clamp/calc) for surface "${descriptor.surfaceId}". Expected ${expectedPadding}px. Static analysis requires deterministic px values. Use fixed px values in inline styles or CSS rules targeting [data-contract="page-container"].`,
+                            details: {
+                                property: "padding",
+                                expected: expectedPadding,
+                                actualLeft: actualPaddingLeft,
+                                actualRight: actualPaddingRight,
+                                selector: containerSelector,
+                                source: pageFrameDescriptor.source,
+                            },
+                        });
+                    }
+                    else {
+                        violations.push({
+                            surfaceId: descriptor.surfaceId,
+                            type: "layout-pageframe-unextractable-value",
+                            message: `Page frame padding could not be extracted for surface "${descriptor.surfaceId}". Expected ${expectedPadding}px. Static analysis requires deterministic px values. Use inline styles, CSS rules targeting [data-contract="page-container"], or Tailwind bracket classes (px-[${expectedPadding}px]).`,
+                            details: {
+                                property: "padding",
+                                expected: expectedPadding,
+                                actualLeft: actualPaddingLeft,
+                                actualRight: actualPaddingRight,
+                                selector: containerSelector,
+                                source: pageFrameDescriptor.source,
+                            },
+                        });
+                    }
+                }
+                else if (actualPaddingLeft !== expectedPadding ||
+                    actualPaddingRight !== expectedPadding) {
+                    violations.push({
+                        surfaceId: descriptor.surfaceId,
+                        type: "layout-pageframe-padding-mismatch",
+                        message: `Page frame padding mismatch for surface "${descriptor.surfaceId}": expected ${expectedPadding}px on both sides, found left=${actualPaddingLeft}px right=${actualPaddingRight}px.`,
+                        details: {
+                            expected: expectedPadding,
+                            actualLeft: actualPaddingLeft,
+                            actualRight: actualPaddingRight,
+                            selector: containerSelector,
+                            source: pageFrameDescriptor.source,
+                        },
+                    });
+                }
+            }
+        }
+        // Apply enforcement mode: warn mode violations don't affect exit code
+        // This is handled at the CLI level by checking violation severity
+    }
     return {
         surfaceId: descriptor.surfaceId,
         violations,
@@ -221,10 +363,20 @@ function formatAjvErrors(errors) {
     return errors.map((error) => {
         const dataPath = error.instancePath || error.schemaPath;
         const baseMessage = error.message ?? "Validation error";
+        // Enhance error messages for common schema issues
+        let enhancedMessage = baseMessage;
+        if (error.keyword === "additionalProperties" && error.params?.additionalProperty) {
+            const prop = error.params.additionalProperty;
+            enhancedMessage = `Additional property "${prop}" is not allowed. This may indicate a capability gap - the field is not supported by the current schema version.`;
+        }
+        else if (error.keyword === "required" && error.params?.missingProperty) {
+            const prop = error.params.missingProperty;
+            enhancedMessage = `Required property "${prop}" is missing.`;
+        }
         if (error.params && Object.keys(error.params).length > 0) {
-            return `${dataPath}: ${baseMessage} (${JSON.stringify(error.params)})`;
+            return `${dataPath}: ${enhancedMessage} (${JSON.stringify(error.params)})`;
         }
-        return `${dataPath}: ${baseMessage}`;
+        return `${dataPath}: ${enhancedMessage}`;
     });
 }
 function buildSectionIndex(sections) {
diff --git a/packages/interfacectl-validator/dist/types.d.ts b/packages/interfacectl-validator/dist/types.d.ts
index 2b9cc41..a7302d1 100644
--- a/packages/interfacectl-validator/dist/types.d.ts
+++ b/packages/interfacectl-validator/dist/types.d.ts
@@ -1,4 +1,11 @@
 export type SurfaceType = "web" | "cli";
+export interface PageFrameLayout {
+    containerSelector: string;
+    containerMaxWidthPx: number;
+    paddingXpx: number;
+    alignment?: "center" | "left";
+    enforcement?: "strict" | "warn";
+}
 export interface ContractSurface {
     id: string;
     displayName: string;
@@ -9,6 +16,7 @@ export interface ContractSurface {
     layout: {
         maxContentWidth: number;
         requiredContainers?: string[];
+        pageFrame?: PageFrameLayout;
     };
 }
 export interface ContractSection {
@@ -47,11 +55,21 @@ export interface SurfaceMotionDescriptor {
     timingFunction: string;
     source?: string;
 }
+export interface PageFrameLayoutDescriptor {
+    containerSelector: string;
+    maxWidthPx?: number | null;
+    paddingLeftPx?: number | null;
+    paddingRightPx?: number | null;
+    source?: string;
+    maxWidthHasClampCalc?: boolean;
+    paddingHasClampCalc?: boolean;
+}
 export interface SurfaceLayoutDescriptor {
     maxContentWidth?: number | null;
     containers?: string[];
     containerSources?: string[];
     source?: string;
+    pageFrame?: PageFrameLayoutDescriptor;
 }
 export interface SurfaceDescriptor {
     surfaceId: string;
@@ -61,7 +79,7 @@ export interface SurfaceDescriptor {
     layout: SurfaceLayoutDescriptor;
     motion: SurfaceMotionDescriptor[];
 }
-export type DriftViolationType = "unknown-surface" | "missing-section" | "unknown-section" | "font-not-allowed" | "color-not-allowed" | "layout-width-exceeded" | "layout-width-undetermined" | "layout-container-missing" | "motion-duration-not-allowed" | "motion-timing-not-allowed" | "descriptor-missing" | "descriptor-unused";
+export type DriftViolationType = "unknown-surface" | "missing-section" | "unknown-section" | "font-not-allowed" | "color-not-allowed" | "layout-width-exceeded" | "layout-width-undetermined" | "layout-container-missing" | "layout-pageframe-selector-unsupported" | "layout-pageframe-container-not-found" | "layout-pageframe-maxwidth-mismatch" | "layout-pageframe-padding-mismatch" | "layout-pageframe-non-deterministic-value" | "layout-pageframe-unextractable-value" | "motion-duration-not-allowed" | "motion-timing-not-allowed" | "descriptor-missing" | "descriptor-unused";
 export interface DriftViolation {
     surfaceId: string;
     type: DriftViolationType;
diff --git a/packages/interfacectl-validator/dist/types.d.ts.map b/packages/interfacectl-validator/dist/types.d.ts.map
index d5c9ce3..e56b3c8 100644
--- a/packages/interfacectl-validator/dist/types.d.ts.map
+++ b/packages/interfacectl-validator/dist/types.d.ts.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"types.d.ts","sourceRoot":"","sources":["../src/types.ts"],"names":[],"mappings":"AAAA,MAAM,MAAM,WAAW,GAAG,KAAK,GAAG,KAAK,CAAC;AAExC,MAAM,WAAW,eAAe;IAC9B,iBAAiB,EAAE,MAAM,CAAC;IAC1B,mBAAmB,EAAE,MAAM,CAAC;IAC5B,UAAU,EAAE,MAAM,CAAC;IACnB,SAAS,CAAC,EAAE,QAAQ,GAAG,MAAM,CAAC;IAC9B,WAAW,CAAC,EAAE,QAAQ,GAAG,MAAM,CAAC;CACjC;AAED,MAAM,WAAW,eAAe;IAC9B,EAAE,EAAE,MAAM,CAAC;IACX,WAAW,EAAE,MAAM,CAAC;IACpB,IAAI,EAAE,WAAW,CAAC;IAClB,gBAAgB,EAAE,MAAM,EAAE,CAAC;IAC3B,YAAY,EAAE,MAAM,EAAE,CAAC;IACvB,aAAa,EAAE,MAAM,EAAE,CAAC;IACxB,MAAM,EAAE;QACN,eAAe,EAAE,MAAM,CAAC;QACxB,kBAAkB,CAAC,EAAE,MAAM,EAAE,CAAC;QAC9B,SAAS,CAAC,EAAE,eAAe,CAAC;KAC7B,CAAC;CACH;AAED,MAAM,WAAW,eAAe;IAC9B,EAAE,EAAE,MAAM,CAAC;IACX,MAAM,EAAE,MAAM,CAAC;IACf,WAAW,EAAE,MAAM,CAAC;CACrB;AAED,MAAM,WAAW,mBAAmB;IAClC,MAAM,EAAE;QACN,kBAAkB,EAAE,MAAM,EAAE,CAAC;QAC7B,sBAAsB,EAAE,MAAM,EAAE,CAAC;KAClC,CAAC;CACH;AAED,MAAM,WAAW,iBAAiB;IAChC,UAAU,EAAE,MAAM,CAAC;IACnB,OAAO,EAAE,MAAM,CAAC;IAChB,WAAW,CAAC,EAAE,MAAM,CAAC;IACrB,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,QAAQ,EAAE,eAAe,EAAE,CAAC;IAC5B,WAAW,EAAE,mBAAmB,CAAC;CAClC;AAED,MAAM,WAAW,wBAAwB;IACvC,EAAE,EAAE,MAAM,CAAC;IACX,MAAM,CAAC,EAAE,MAAM,CAAC;CACjB;AAED,MAAM,WAAW,qBAAqB;IACpC,KAAK,EAAE,MAAM,CAAC;IACd,MAAM,CAAC,EAAE,MAAM,CAAC;CACjB;AAED,MAAM,WAAW,sBAAsB;IACrC,KAAK,EAAE,MAAM,CAAC;IACd,MAAM,CAAC,EAAE,MAAM,CAAC;CACjB;AAED,MAAM,WAAW,uBAAuB;IACtC,UAAU,EAAE,MAAM,CAAC;IACnB,cAAc,EAAE,MAAM,CAAC;IACvB,MAAM,CAAC,EAAE,MAAM,CAAC;CACjB;AAED,MAAM,WAAW,yBAAyB;IACxC,iBAAiB,EAAE,MAAM,CAAC;IAC1B,UAAU,CAAC,EAAE,MAAM,GAAG,IAAI,CAAC;IAC3B,aAAa,CAAC,EAAE,MAAM,GAAG,IAAI,CAAC;IAC9B,cAAc,CAAC,EAAE,MAAM,GAAG,IAAI,CAAC;IAC/B,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,oBAAoB,CAAC,EAAE,OAAO,CAAC;IAC/B,mBAAmB,CAAC,EAAE,OAAO,CAAC;CAC/B;AAED,MAAM,WAAW,uBAAuB;IACtC,eAAe,CAAC,EAAE,MAAM,GAAG,IAAI,CAAC;IAChC,UAAU,CAAC,EAAE,MAAM,EAAE,CAAC;IACtB,gBAAgB,CAAC,EAAE,MAAM,EAAE,CAAC;IAC5B,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,SAAS,CAAC,EAAE,yBAAyB,CAAC;CACvC;AAED,MAAM,WAAW,iBAAiB;IAChC,SAAS,EAAE,MAAM,CAAC;IAClB,QAAQ,EAAE,wBAAwB,EAAE,CAAC;IACrC,KAAK,EAAE,qBAAqB,EAAE,CAAC;IAC/B,MAAM,EAAE,sBAAsB,EAAE,CAAC;IACjC,MAAM,EAAE,uBAAuB,CAAC;IAChC,MAAM,EAAE,uBAAuB,EAAE,CAAC;CACnC;AAED,MAAM,MAAM,kBAAkB,GAC1B,iBAAiB,GACjB,iBAAiB,GACjB,iBAAiB,GACjB,kBAAkB,GAClB,mBAAmB,GACnB,uBAAuB,GACvB,2BAA2B,GAC3B,0BAA0B,GAC1B,uCAAuC,GACvC,sCAAsC,GACtC,oCAAoC,GACpC,mCAAmC,GACnC,0CAA0C,GAC1C,sCAAsC,GACtC,6BAA6B,GAC7B,2BAA2B,GAC3B,oBAAoB,GACpB,mBAAmB,CAAC;AAExB,MAAM,WAAW,cAAc;IAC7B,SAAS,EAAE,MAAM,CAAC;IAClB,IAAI,EAAE,kBAAkB,CAAC;IACzB,OAAO,EAAE,MAAM,CAAC;IAChB,OAAO,CAAC,EAAE,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;CACnC;AAED,MAAM,WAAW,aAAa;IAC5B,SAAS,EAAE,MAAM,CAAC;IAClB,UAAU,EAAE,cAAc,EAAE,CAAC;CAC9B;AAED,MAAM,WAAW,iBAAiB;IAChC,QAAQ,EAAE,iBAAiB,CAAC;IAC5B,cAAc,EAAE,aAAa,EAAE,CAAC;CACjC;AAID,MAAM,MAAM,cAAc,GAAG,OAAO,GAAG,SAAS,GAAG,UAAU,GAAG,SAAS,CAAC;AAC1E,MAAM,MAAM,QAAQ,GAAG,OAAO,GAAG,SAAS,GAAG,MAAM,CAAC;AACpD,MAAM,MAAM,WAAW,GAAG,MAAM,GAAG,YAAY,GAAG,UAAU,CAAC;AAC7D,MAAM,MAAM,eAAe,GAAG,MAAM,GAAG,KAAK,GAAG,IAAI,CAAC;AAEpD,MAAM,WAAW,SAAS;IACxB,SAAS,CAAC,EAAE,MAAM,CAAC;IACnB,IAAI,EAAE,cAAc,CAAC;IACrB,IAAI,EAAE,MAAM,CAAC;IACb,aAAa,CAAC,EAAE,OAAO,CAAC;IACxB,aAAa,CAAC,EAAE,OAAO,CAAC;IACxB,QAAQ,EAAE,QAAQ,CAAC;IACnB,IAAI,CAAC,EAAE,MAAM,CAAC;IACd,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,MAAM,CAAC,EAAE;QACP,QAAQ,EAAE,MAAM,CAAC;QACjB,MAAM,EAAE,MAAM,CAAC;QACf,UAAU,EAAE,MAAM,CAAC;KACpB,CAAC;CACH;AAED,MAAM,WAAW,SAAS;IACxB,QAAQ,EACJ,YAAY,GACZ,oBAAoB,GACpB,uBAAuB,GACvB,cAAc,GACd,oBAAoB,GACpB,sBAAsB,GACtB,kBAAkB,GAClB,qBAAqB,GACrB,oBAAoB,GACpB,mBAAmB,CAAC;IACxB,QAAQ,EAAE,QAAQ,CAAC;IACnB,OAAO,EAAE,MAAM,CAAC;IAChB,YAAY,CAAC,EAAE,MAAM,EAAE,CAAC;CACzB;AAED,MAAM,WAAW,UAAU;IACzB,aAAa,EAAE,MAAM,CAAC;IACtB,IAAI,EAAE;QAAE,IAAI,EAAE,cAAc,CAAC;QAAC,OAAO,EAAE,MAAM,CAAA;KAAE,CAAC;IAChD,MAAM,CAAC,EAAE;QAAE,OAAO,EAAE,MAAM,CAAC;QAAC,WAAW,EAAE,MAAM,CAAA;KAAE,CAAC;IAClD,QAAQ,EAAE;QAAE,IAAI,EAAE,MAAM,CAAC;QAAC,OAAO,EAAE,MAAM,CAAA;KAAE,CAAC;IAC5C,QAAQ,EAAE;QAAE,IAAI,EAAE,MAAM,CAAC;QAAC,cAAc,CAAC,EAAE,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,CAAA;KAAE,CAAC;IACrE,aAAa,EAAE;QACb,OAAO,EAAE,OAAO,CAAC;QACjB,cAAc,EAAE,MAAM,EAAE,CAAC;QACzB,aAAa,EAAE,MAAM,EAAE,CAAC;KACzB,CAAC;IACF,OAAO,EAAE;QACP,YAAY,EAAE,MAAM,CAAC;QACrB,MAAM,EAAE;YAAE,KAAK,EAAE,MAAM,CAAC;YAAC,OAAO,EAAE,MAAM,CAAC;YAAC,QAAQ,EAAE,MAAM,CAAC;YAAC,OAAO,EAAE,MAAM,CAAA;SAAE,CAAC;QAC9E,UAAU,EAAE;YAAE,KAAK,EAAE,MAAM,CAAC;YAAC,OAAO,EAAE,MAAM,CAAC;YAAC,IAAI,EAAE,MAAM,CAAA;SAAE,CAAC;KAC9D,CAAC;IACF,OAAO,EAAE,SAAS,EAAE,CAAC;IACrB,UAAU,CAAC,EAAE,SAAS,EAAE,CAAC;IACzB,KAAK,CAAC,EAAE;QAAE,OAAO,EAAE,MAAM,CAAA;KAAE,CAAC;CAC7B;AAED,MAAM,WAAW,WAAW;IAC1B,EAAE,EAAE,MAAM,CAAC;IACX,OAAO,EAAE,MAAM,CAAC;IAChB,WAAW,EAAE,OAAO,CAAC;IACrB,WAAW,EAAE,MAAM,CAAC;IACpB,WAAW,EAAE,WAAW,CAAC;IACzB,WAAW,CAAC,EAAE,QAAQ,CAAC;CACxB;AAED,MAAM,WAAW,iBAAiB;IAChC,OAAO,EAAE,MAAM,CAAC;IAChB,WAAW,EAAE,MAAM,CAAC;IACpB,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB,KAAK,EAAE;QACL,IAAI,EAAE;YAAE,SAAS,EAAE,OAAO,CAAC;YAAC,iBAAiB,EAAE,OAAO,GAAG,SAAS,CAAA;SAAE,CAAC;QACrE,GAAG,EAAE;YAAE,KAAK,EAAE,MAAM,EAAE,CAAC;YAAC,MAAM,EAAE,OAAO,CAAA;SAAE,CAAC;QAC1C,EAAE,EAAE;YAAE,WAAW,EAAE,SAAS,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\ No newline at end of file

From 46d7167d561fb4ef7e0dc6d6cf364b3e9b4c78d8 Mon Sep 17 00:00:00 2001
From: Mike Long <mikeylong@users.noreply.github.com>
Date: Thu, 15 Jan 2026 18:30:08 -0800
Subject: [PATCH 2/2] feat: add color policy + allowedColors deprecation +
 traceable findings

---
 VERIFICATION_SUMMARY.md                       | 124 +++++++
 .../dist/commands/validate.d.ts.map           |   2 +-
 .../dist/commands/validate.js                 |  77 +++-
 .../interfacectl-cli/docs/color-policy.md     | 293 +++++++++++++++
 .../interfacectl-cli/src/commands/validate.ts |   2 -
 .../interfacectl-cli/src/utils/normalize.ts   |  10 +-
 .../test/color-deprecation.test.mjs           | 188 ++++++++++
 .../dist/index.d.ts.map                       |   2 +-
 packages/interfacectl-validator/dist/index.js | 143 +++++++-
 .../schema/surfaces.web.contract.schema.json  |  36 ++
 packages/interfacectl-validator/src/index.ts  | 337 +++++++++++++++++-
 .../schema/surfaces.web.contract.schema.json  | 193 +++++++++-
 packages/interfacectl-validator/src/types.ts  |  71 +++-
 13 files changed, 1422 insertions(+), 56 deletions(-)
 create mode 100644 VERIFICATION_SUMMARY.md
 create mode 100644 packages/interfacectl-cli/docs/color-policy.md
 create mode 100644 packages/interfacectl-cli/test/color-deprecation.test.mjs

diff --git a/VERIFICATION_SUMMARY.md b/VERIFICATION_SUMMARY.md
new file mode 100644
index 0000000..9307788
--- /dev/null
+++ b/VERIFICATION_SUMMARY.md
@@ -0,0 +1,124 @@
+# Color Policy Implementation Verification
+
+## ✅ Code Names Match Documentation
+
+All emitted codes match the documentation in `color-policy.md`:
+
+- ✅ `color.raw-value.used` - Emitted for raw color literals
+- ✅ `color.token.namespace.violation` - Emitted for CSS variables not matching allowed namespaces  
+- ✅ `contract.deprecated-field` - Emitted when `allowedColors` is present
+
+## ✅ Severity Mapping Matches Documentation
+
+### `color.raw-value.used`
+- **Policy: `"warn"`** → Severity: `"warning"` (does not fail validation)
+- **Policy: `"strict"`** → Severity: `"error"` (fails validation with exit code)
+
+Implementation location: `packages/interfacectl-cli/src/commands/validate.ts:578-592`
+
+```typescript
+case "color-raw-value-used": {
+  finding.expected = details.allowedValues;
+  finding.found = details.colorValue;
+  // Set severity based on policy: "warn" -> warning, "strict" -> error
+  if (details.policy === "warn") {
+    finding.severity = "warning";
+  } else if (details.policy === "strict") {
+    finding.severity = "error";
+  }
+  break;
+}
+```
+
+### `color.token.namespace.violation`
+- **Default**: Severity: `"warning"` (does not fail validation)
+
+Implementation location: `packages/interfacectl-cli/src/commands/validate.ts:595-601`
+
+```typescript
+case "color-token-namespace-violation": {
+  finding.expected = details.allowedNamespaces;
+  finding.found = details.tokenName;
+  // Token namespace violations are warnings by default
+  finding.severity = "warning";
+  break;
+}
+```
+
+### `contract.deprecated-field`
+- **Default**: Severity: `"warning"` (does not fail validation)
+
+Implementation location: `packages/interfacectl-cli/src/commands/validate.ts:258`
+
+## ✅ Exit Code Behavior
+
+**Warnings do not fail validation** - Only errors cause non-zero exit codes.
+
+Implementation location: `packages/interfacectl-cli/src/commands/validate.ts:330-348`
+
+```typescript
+} else {
+  // Filter to only error-level findings for exit code determination
+  const errorFindings = violationFindings.filter((f) => f.severity === "error");
+  if (errorFindings.length === 0) {
+    exitCode = 0; // Only warnings, don't fail
+  } else {
+    // Find the highest severity category (E2 > E1)
+    // ... exit code logic based on error findings only
+  }
+}
+```
+
+## Test Coverage
+
+All scenarios are covered in tests:
+
+- ✅ Schema accepts contract without `allowedColors`
+- ✅ Schema accepts contract with `color` policy
+- ✅ Deprecation warning emitted for `allowedColors`
+- ✅ Raw literal detection with `warn` policy (severity: warning)
+- ✅ Raw literal detection with `strict` policy (severity: error)
+- ✅ Allowlist/denylist behavior
+- ✅ Token namespace validation
+- ✅ Policy `off` skips checks
+
+## Ready for surfaces-monorepo Integration
+
+The implementation is ready for use in surfaces-monorepo:
+
+1. **Contracts with `allowedColors`** will:
+   - ✅ Pass schema validation
+   - ✅ Emit `contract.deprecated-field` warnings
+   - ✅ Continue to compliance checks (layout pageFrame drift will appear)
+
+2. **Contracts with `color` policy** will:
+   - ✅ Pass schema validation
+   - ✅ Emit `color.raw-value.used` findings based on policy (warn/strict)
+   - ✅ Emit `color.token.namespace.violation` warnings for invalid tokens
+
+3. **Exit codes**:
+   - ✅ `rawValues.policy: "warn"` → warnings only, exit code 0
+   - ✅ `rawValues.policy: "strict"` → errors, exit code based on category (E1/E2)
+
+## Next Steps for surfaces-monorepo
+
+1. Pull updated interfacectl changes
+2. Run `pnpm validate:ci`
+3. Verify output includes:
+   - `contract.deprecated-field` warnings for legacy `allowedColors`
+   - Actual compliance checks (layout pageFrame drift)
+4. (Optional) Add `color` policy section to contract:
+   ```json
+   {
+     "color": {
+       "sourceOfTruth": {
+         "type": "tokens",
+         "tokenNamespaces": ["--color-"]
+       },
+       "rawValues": {
+         "policy": "warn"
+       }
+     }
+   }
+   ```
+5. Leave `allowedColors` on surfaces for one iteration to see both deprecation warnings and v1 color findings
diff --git a/packages/interfacectl-cli/dist/commands/validate.d.ts.map b/packages/interfacectl-cli/dist/commands/validate.d.ts.map
index bac0d41..9579669 100644
--- a/packages/interfacectl-cli/dist/commands/validate.d.ts.map
+++ b/packages/interfacectl-cli/dist/commands/validate.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"validate.d.ts","sourceRoot":"","sources":["../../src/commands/validate.ts"],"names":[],"mappings":"AAeA,OAAO,EAAsB,KAAK,eAAe,EAAE,MAAM,wBAAwB,CAAC;AAOlF,KAAK,YAAY,GAAG,MAAM,GAAG,MAAM,CAAC;AAmCpC,MAAM,WAAW,sBAAsB;IACrC,YAAY,CAAC,EAAE,MAAM,CAAC;IACtB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,cAAc,CAAC,EAAE,MAAM,EAAE,CAAC;IAC1B,YAAY,CAAC,EAAE,YAAY,CAAC;IAC5B,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,SAAS,CAAC,EAAE,eAAe,CAAC;CAC7B;AAED,wBAAsB,kBAAkB,CACtC,OAAO,EAAE,sBAAsB,GAC9B,OAAO,CAAC,MAAM,CAAC,CAwQjB"}
\ No newline at end of file
+{"version":3,"file":"validate.d.ts","sourceRoot":"","sources":["../../src/commands/validate.ts"],"names":[],"mappings":"AAeA,OAAO,EAAsB,KAAK,eAAe,EAAE,MAAM,wBAAwB,CAAC;AAOlF,KAAK,YAAY,GAAG,MAAM,GAAG,MAAM,CAAC;AAmCpC,MAAM,WAAW,sBAAsB;IACrC,YAAY,CAAC,EAAE,MAAM,CAAC;IACtB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,cAAc,CAAC,EAAE,MAAM,EAAE,CAAC;IAC1B,YAAY,CAAC,EAAE,YAAY,CAAC;IAC5B,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,UAAU,CAAC,EAAE,MAAM,CAAC;IACpB,cAAc,CAAC,EAAE,OAAO,CAAC;IACzB,SAAS,CAAC,EAAE,eAAe,CAAC;CAC7B;AAED,wBAAsB,kBAAkB,CACtC,OAAO,EAAE,sBAAsB,GAC9B,OAAO,CAAC,MAAM,CAAC,CAqSjB"}
\ No newline at end of file
diff --git a/packages/interfacectl-cli/dist/commands/validate.js b/packages/interfacectl-cli/dist/commands/validate.js
index 0c5fb5e..b4784b3 100644
--- a/packages/interfacectl-cli/dist/commands/validate.js
+++ b/packages/interfacectl-cli/dist/commands/validate.js
@@ -149,6 +149,23 @@ export async function runValidateCommand(options) {
         return finalize(e0ExitCode, initialContractVersion);
     }
     const contract = structureResult.contract;
+    // Check for deprecated allowedColors fields
+    for (let i = 0; i < contract.surfaces.length; i++) {
+        const surface = contract.surfaces[i];
+        if (surface.allowedColors !== undefined) {
+            const finding = {
+                code: "contract.deprecated-field",
+                severity: "warning",
+                category: "E0",
+                message: `allowedColors is deprecated. Migrate to color.sourceOfTruth + color.rawValues policy.`,
+                location: `/surfaces/${i}/allowedColors`,
+            };
+            findings.push(finding);
+            if (!isJson) {
+                textReporter.warn(pc.yellow(`  • Surface "${surface.id}": allowedColors is deprecated (use color.sourceOfTruth + color.rawValues)`));
+            }
+        }
+    }
     const surfaceFilters = new Set((options.surfaceFilters ?? []).map((value) => value.trim()));
     const structuralDescriptorResult = await collectSurfaceDescriptors({
         workspaceRoot,
@@ -192,24 +209,31 @@ export async function runValidateCommand(options) {
         exitCode = 0;
     }
     else {
-        // Find the highest severity category (E2 > E1)
-        let maxCategory = null;
-        for (const finding of violationFindings) {
-            const category = finding.category;
-            if (category === "E2") {
-                maxCategory = "E2";
-                break; // E2 is highest, no need to continue
-            }
-            else if (category === "E1" && (maxCategory === null || maxCategory === "E1")) {
-                maxCategory = "E1";
-            }
-        }
-        if (maxCategory) {
-            exitCode = getExitCodeForCategory(maxCategory, exitCodeVersion);
+        // Filter to only error-level findings for exit code determination
+        const errorFindings = violationFindings.filter((f) => f.severity === "error");
+        if (errorFindings.length === 0) {
+            exitCode = 0; // Only warnings, don't fail
         }
         else {
-            // Fallback (should not happen, but handle gracefully)
-            exitCode = exitCodeVersion === "v2" ? 30 : 1;
+            // Find the highest severity category (E2 > E1)
+            let maxCategory = null;
+            for (const finding of errorFindings) {
+                const category = finding.category;
+                if (category === "E2") {
+                    maxCategory = "E2";
+                    break; // E2 is highest, no need to continue
+                }
+                else if (category === "E1" && (maxCategory === null || maxCategory === "E1")) {
+                    maxCategory = "E1";
+                }
+            }
+            if (maxCategory) {
+                exitCode = getExitCodeForCategory(maxCategory, exitCodeVersion);
+            }
+            else {
+                // Fallback (should not happen, but handle gracefully)
+                exitCode = exitCodeVersion === "v2" ? 30 : 1;
+            }
         }
         // Print deprecation warning for v1
         if (exitCodeVersion === "v1") {
@@ -284,6 +308,8 @@ function mapViolationsToFindings(summary) {
         "layout-pageframe-unextractable-value": "layout.pageframe.unextractable-value",
         "motion-duration-not-allowed": "motion.duration",
         "motion-timing-not-allowed": "motion.timing",
+        "color-raw-value-used": "color.raw-value.used",
+        "color-token-namespace-violation": "color.token.namespace.violation",
     };
     for (const report of summary.surfaceReports) {
         for (const violation of report.violations) {
@@ -405,6 +431,25 @@ function mapViolationsToFindings(summary) {
                     finding.found = violation.surfaceId;
                     break;
                 }
+                case "color-raw-value-used": {
+                    finding.expected = details.allowedValues;
+                    finding.found = details.colorValue;
+                    // Set severity based on policy: "warn" -> warning, "strict" -> error
+                    if (details.policy === "warn") {
+                        finding.severity = "warning";
+                    }
+                    else if (details.policy === "strict") {
+                        finding.severity = "error";
+                    }
+                    break;
+                }
+                case "color-token-namespace-violation": {
+                    finding.expected = details.allowedNamespaces;
+                    finding.found = details.tokenName;
+                    // Token namespace violations are warnings by default
+                    finding.severity = "warning";
+                    break;
+                }
                 default:
                     break;
             }
diff --git a/packages/interfacectl-cli/docs/color-policy.md b/packages/interfacectl-cli/docs/color-policy.md
new file mode 100644
index 0000000..247a0ac
--- /dev/null
+++ b/packages/interfacectl-cli/docs/color-policy.md
@@ -0,0 +1,293 @@
+# Color Policy
+
+The color policy section provides a flexible, evolution-friendly way to enforce color usage across surfaces. It replaces the deprecated `allowedColors` field on individual surfaces with a centralized policy that supports static analysis.
+
+## Overview
+
+The color policy is defined at the contract level and applies to all surfaces. It consists of four main sections:
+
+- **`sourceOfTruth`**: Defines where colors should come from (tokens vs. none)
+- **`rawValues`**: Controls detection and enforcement of raw color literals (hex, rgb, hsl)
+- **`semantics`**: (Future) Semantic role enforcement (accent, text, background, border)
+- **`consistency`**: (Future) Cross-surface consistency checks
+
+## Migration from `allowedColors`
+
+The `allowedColors` field on surfaces is **deprecated** and will be removed in a future version. Migrate to the new color policy:
+
+### Before (Deprecated)
+
+```json
+{
+  "surfaces": [
+    {
+      "id": "web-app",
+      "allowedColors": ["var(--color-primary)", "var(--color-secondary)"]
+    }
+  ]
+}
+```
+
+### After (Recommended)
+
+```json
+{
+  "color": {
+    "sourceOfTruth": {
+      "type": "tokens",
+      "tokenNamespaces": ["--color-"]
+    },
+    "rawValues": {
+      "policy": "warn"
+    }
+  },
+  "surfaces": [
+    {
+      "id": "web-app"
+    }
+  ]
+}
+```
+
+When `allowedColors` is present, interfacectl will emit a deprecation warning (`contract.deprecated-field`) but will not fail validation. The warning includes a JSON pointer to the deprecated field and guidance on migration.
+
+## Configuration
+
+### `sourceOfTruth`
+
+Defines the authoritative source for colors.
+
+```json
+{
+  "sourceOfTruth": {
+    "type": "tokens" | "none",
+    "tokenNamespaces": ["--color-", "--ds-color-"]  // Required if type is "tokens"
+  }
+}
+```
+
+- **`type: "tokens"`**: Colors must come from CSS variables (design tokens). Requires `tokenNamespaces`.
+- **`type: "none"`**: No source-of-truth enforcement (useful for gradual migration).
+
+**Token Namespace Validation**: When `type` is `"tokens"`, interfacectl validates that all CSS variable references start with one of the configured namespaces. Variables that don't match trigger `color.token.namespace.violation`.
+
+Example violation:
+- Contract: `tokenNamespaces: ["--color-"]`
+- Code: `var(--custom-red)` → Violation (doesn't start with `--color-`)
+- Code: `var(--color-primary)` → ✅ Valid
+
+### `rawValues`
+
+Controls detection and enforcement of raw color literals (hex, rgb, hsl, hsla).
+
+```json
+{
+  "rawValues": {
+    "policy": "off" | "warn" | "strict",
+    "allowlist": ["#ffffff", "#000000"],  // Optional
+    "denylist": ["#ff0000"]               // Optional
+  }
+}
+```
+
+**Policy Levels:**
+- **`"off"`**: No raw literal detection (except denylist violations)
+- **`"warn"`**: Emit warnings for raw literals (does not fail validation)
+- **`"strict"`**: Emit errors for raw literals (fails validation with exit code 1)
+
+**Allowlist & Denylist:**
+- **Allowlist**: Raw literals that are explicitly permitted (e.g., `#ffffff`, `#000000` for base colors)
+- **Denylist**: Raw literals that are always forbidden, regardless of policy level
+
+**Detection:**
+- Hex colors: `#rgb`, `#rrggbb`, `#rrggbbaa`
+- RGB/RGBA: `rgb(...)`, `rgba(...)`
+- HSL/HSLA: `hsl(...)`, `hsla(...)`
+- CSS variables (`var(--...)`) are **not** considered raw literals
+
+**Example:**
+```json
+{
+  "rawValues": {
+    "policy": "warn",
+    "allowlist": ["#ffffff", "#000000"],
+    "denylist": ["#ff0000"]
+  }
+}
+```
+
+- `#ff00aa` → Warning (not allowlisted)
+- `#ffffff` → ✅ Allowed (in allowlist)
+- `#ff0000` → Violation (in denylist, even if allowlisted)
+
+### `semantics` (Future)
+
+Semantic role enforcement for colors. Not yet enforced in v1, but schema accepts the structure for future use.
+
+```json
+{
+  "semantics": {
+    "roles": {
+      "accent": { "enforcement": "warn" },
+      "text": { "enforcement": "strict" },
+      "background": { "enforcement": "warn" },
+      "border": { "enforcement": "off" }
+    }
+  }
+}
+```
+
+### `consistency` (Future)
+
+Cross-surface consistency checks. Not yet enforced in v1, but schema accepts the structure for future use.
+
+```json
+{
+  "consistency": {
+    "acrossSurfaces": {
+      "enforcement": "warn",
+      "signals": ["token-name", "css-var-name", "class-fragment"]
+    }
+  }
+}
+```
+
+## Validation Codes
+
+### `color.raw-value.used`
+
+Emitted when a raw color literal is detected and violates the policy.
+
+- **Severity**: `warn` or `error` (based on `rawValues.policy`)
+- **Category**: `E1` (Token Policy)
+- **Details**:
+  - `colorValue`: The detected raw literal
+  - `source`: File location (if available)
+  - `policy`: The policy level (`warn` or `strict`)
+  - `jsonPointer`: `/color/rawValues`
+
+**Example:**
+```json
+{
+  "code": "color.raw-value.used",
+  "severity": "warn",
+  "category": "E1",
+  "message": "Raw color literal \"#ff00aa\" detected. Use design tokens instead.",
+  "location": "app/globals.css",
+  "found": "#ff00aa"
+}
+```
+
+### `color.token.namespace.violation`
+
+Emitted when a CSS variable doesn't start with any allowed namespace.
+
+- **Severity**: `warn` (default)
+- **Category**: `E1` (Token Policy)
+- **Details**:
+  - `tokenName`: The variable name (e.g., `--not-allowed-token`)
+  - `allowedNamespaces`: Array of allowed namespace prefixes
+  - `source`: File location (if available)
+  - `jsonPointer`: `/color/sourceOfTruth/tokenNamespaces`
+
+**Example:**
+```json
+{
+  "code": "color.token.namespace.violation",
+  "severity": "warn",
+  "category": "E1",
+  "message": "Color token \"--not-allowed-token\" does not start with any allowed namespace. Allowed namespaces: --color-, --ds-color-.",
+  "location": "app/components/Button.tsx",
+  "found": "--not-allowed-token",
+  "expected": ["--color-", "--ds-color-"]
+}
+```
+
+### `contract.deprecated-field`
+
+Emitted when `allowedColors` is present on a surface.
+
+- **Severity**: `warning`
+- **Category**: `E0` (Artifact Invalid)
+- **Details**:
+  - `field`: `"allowedColors"`
+  - `location`: JSON pointer to the field (e.g., `/surfaces/0/allowedColors`)
+  - `replacement`: `["color.sourceOfTruth", "color.rawValues"]`
+
+**Example:**
+```json
+{
+  "code": "contract.deprecated-field",
+  "severity": "warning",
+  "category": "E0",
+  "message": "allowedColors is deprecated. Migrate to color.sourceOfTruth + color.rawValues policy.",
+  "location": "/surfaces/0/allowedColors"
+}
+```
+
+## Static Analysis
+
+v1 color validation uses static analysis to extract colors from:
+
+- CSS files (`.css`)
+- Inline styles in component files (`.tsx`, `.jsx`, `.ts`, `.js`)
+- CSS variable references (`var(--...)`)
+- Raw color literals in CSS declarations
+
+**Limitations:**
+- Does not validate runtime computed colors
+- Does not parse complex CSS expressions (gradients, calc, etc.)
+- Conservative detection to avoid false positives
+
+## Best Practices
+
+1. **Start with `warn`**: Use `policy: "warn"` initially to identify raw literals without blocking builds
+2. **Use allowlists sparingly**: Only allowlist truly necessary base colors (e.g., `#ffffff`, `#000000`)
+3. **Denylist dangerous colors**: Use denylist to explicitly forbid problematic colors
+4. **Namespace tokens consistently**: Use a single namespace prefix (e.g., `--color-`) for all design tokens
+5. **Migrate gradually**: Keep `allowedColors` during migration, then remove once all surfaces use tokens
+
+## Example Contract
+
+```json
+{
+  "contractId": "ui.contract",
+  "version": "1.0.0",
+  "color": {
+    "sourceOfTruth": {
+      "type": "tokens",
+      "tokenNamespaces": ["--color-"]
+    },
+    "rawValues": {
+      "policy": "warn",
+      "allowlist": ["#ffffff", "#000000"],
+      "denylist": []
+    }
+  },
+  "surfaces": [
+    {
+      "id": "web-app",
+      "displayName": "Web App",
+      "type": "web",
+      "requiredSections": ["header"],
+      "allowedFonts": ["var(--font-primary)"],
+      "layout": {
+        "maxContentWidth": 1200
+      }
+    }
+  ],
+  "sections": [
+    {
+      "id": "header",
+      "intent": "Page header",
+      "description": "Main header section"
+    }
+  ],
+  "constraints": {
+    "motion": {
+      "allowedDurationsMs": [200, 300],
+      "allowedTimingFunctions": ["ease", "ease-in-out"]
+    }
+  }
+}
+```
diff --git a/packages/interfacectl-cli/src/commands/validate.ts b/packages/interfacectl-cli/src/commands/validate.ts
index 36bd805..c2a2f06 100644
--- a/packages/interfacectl-cli/src/commands/validate.ts
+++ b/packages/interfacectl-cli/src/commands/validate.ts
@@ -599,8 +599,6 @@ function mapViolationsToFindings(
           finding.severity = "warning";
           break;
         }
-        }
-
         default:
           break;
       }
diff --git a/packages/interfacectl-cli/src/utils/normalize.ts b/packages/interfacectl-cli/src/utils/normalize.ts
index 987f586..0c5b4fd 100644
--- a/packages/interfacectl-cli/src/utils/normalize.ts
+++ b/packages/interfacectl-cli/src/utils/normalize.ts
@@ -158,10 +158,12 @@ export function normalizeContract(
 
       if (SET_LIKE_FIELDS.has("allowedColors")) {
         const original = surface.allowedColors;
-        const sorted = normalizeSetField(original);
-        if (JSON.stringify(original) !== JSON.stringify(sorted)) {
-          metadata.reorderedPaths.push(`surfaces[${surfaceIdx}].allowedColors`);
-          normalizedSurface.allowedColors = sorted;
+        if (original) {
+          const sorted = normalizeSetField(original);
+          if (JSON.stringify(original) !== JSON.stringify(sorted)) {
+            metadata.reorderedPaths.push(`surfaces[${surfaceIdx}].allowedColors`);
+            normalizedSurface.allowedColors = sorted;
+          }
         }
       }
 
diff --git a/packages/interfacectl-cli/test/color-deprecation.test.mjs b/packages/interfacectl-cli/test/color-deprecation.test.mjs
new file mode 100644
index 0000000..c35a1f4
--- /dev/null
+++ b/packages/interfacectl-cli/test/color-deprecation.test.mjs
@@ -0,0 +1,188 @@
+import { test } from "node:test";
+import { spawn } from "node:child_process";
+import { once } from "node:events";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import assert from "node:assert/strict";
+import os from "node:os";
+import {
+  mkdtemp,
+  mkdir,
+  writeFile,
+  rm,
+} from "node:fs/promises";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const cliPackageDir = path.resolve(__dirname, "..");
+const cliExecutable = path.resolve(cliPackageDir, "dist", "index.js");
+
+async function runCommand(command, args, options = {}) {
+  const proc = spawn(command, args, {
+    ...options,
+    stdio: ["ignore", "pipe", "pipe"],
+  });
+
+  let stdout = "";
+  let stderr = "";
+
+  proc.stdout.on("data", (chunk) => {
+    stdout += chunk.toString();
+  });
+
+  proc.stderr.on("data", (chunk) => {
+    stderr += chunk.toString();
+  });
+
+  const exitCode = await once(proc, "exit").then(([code]) => code ?? 1);
+
+  return { exitCode, stdout, stderr };
+}
+
+test("validate emits deprecation warning for allowedColors", async () => {
+  const tempRoot = await mkdtemp(
+    path.join(os.tmpdir(), "interfacectl-deprecation-"),
+  );
+
+  try {
+    const contractPath = path.join(tempRoot, "contract.json");
+    const contract = {
+      contractId: "test",
+      version: "1.0.0",
+      surfaces: [
+        {
+          id: "test-surface",
+          displayName: "Test Surface",
+          type: "web",
+          requiredSections: ["header"],
+          allowedFonts: ["Inter"],
+          allowedColors: ["#000000", "#ffffff"],
+          layout: {
+            maxContentWidth: 1200,
+          },
+        },
+      ],
+      sections: [
+        {
+          id: "header",
+          intent: "Page header",
+          description: "Main header",
+        },
+      ],
+      constraints: {
+        motion: {
+          allowedDurationsMs: [200],
+          allowedTimingFunctions: ["ease"],
+        },
+      },
+    };
+
+    await writeFile(contractPath, JSON.stringify(contract, null, 2), "utf-8");
+
+    // Create minimal surface directory structure with source files
+    const surfaceDir = path.join(tempRoot, "apps", "test-surface");
+    await mkdir(surfaceDir, { recursive: true });
+    await writeFile(path.join(surfaceDir, "package.json"), JSON.stringify({ name: "test-surface" }), "utf-8");
+    // Create minimal app structure for Next.js surface
+    const appDir = path.join(surfaceDir, "app");
+    await mkdir(appDir, { recursive: true });
+    await writeFile(path.join(appDir, "layout.tsx"), `export default function Layout({ children }) { return <div>{children}</div>; }`, "utf-8");
+    await writeFile(path.join(appDir, "page.tsx"), `export default function Page() { return <div>Test</div>; }`, "utf-8");
+
+    const result = await runCommand(
+      "node",
+      [cliExecutable, "validate", "--contract", contractPath, "--workspace-root", tempRoot, "--format", "json", "--exit-codes", "v2"],
+      { cwd: tempRoot },
+    );
+
+    // Should pass schema validation (allowedColors is accepted but deprecated)
+    assert.equal(result.exitCode, 0, `Command failed: ${result.stderr}\n${result.stdout}`);
+
+    const output = JSON.parse(result.stdout);
+    assert.ok(output.findings);
+    
+    // Should have deprecation warning
+    const deprecationFinding = output.findings.find(
+      (f) => f.code === "contract.deprecated-field",
+    );
+    assert.ok(deprecationFinding, "Should emit contract.deprecated-field finding");
+    assert.equal(deprecationFinding.severity, "warning");
+    assert(deprecationFinding.message.includes("allowedColors"));
+    assert(deprecationFinding.message.includes("deprecated"));
+    assert(deprecationFinding.location, "Should include jsonPointer location");
+  } finally {
+    await rm(tempRoot, { recursive: true, force: true });
+  }
+});
+
+test("validate accepts contract with color policy", async () => {
+  const tempRoot = await mkdtemp(
+    path.join(os.tmpdir(), "interfacectl-color-policy-"),
+  );
+
+  try {
+    const contractPath = path.join(tempRoot, "contract.json");
+    const contract = {
+      contractId: "test",
+      version: "1.0.0",
+      surfaces: [
+        {
+          id: "test-surface",
+          displayName: "Test Surface",
+          type: "web",
+          requiredSections: ["header"],
+          allowedFonts: ["Inter"],
+          layout: {
+            maxContentWidth: 1200,
+          },
+        },
+      ],
+      sections: [
+        {
+          id: "header",
+          intent: "Page header",
+          description: "Main header",
+        },
+      ],
+      constraints: {
+        motion: {
+          allowedDurationsMs: [200],
+          allowedTimingFunctions: ["ease"],
+        },
+      },
+      color: {
+        sourceOfTruth: {
+          type: "tokens",
+          tokenNamespaces: ["--color-"],
+        },
+        rawValues: {
+          policy: "warn",
+        },
+      },
+    };
+
+    await writeFile(contractPath, JSON.stringify(contract, null, 2), "utf-8");
+
+    // Create minimal surface directory structure with source files
+    const surfaceDir = path.join(tempRoot, "apps", "test-surface");
+    await mkdir(surfaceDir, { recursive: true });
+    await writeFile(path.join(surfaceDir, "package.json"), JSON.stringify({ name: "test-surface" }), "utf-8");
+    // Create minimal app structure for Next.js surface
+    const appDir = path.join(surfaceDir, "app");
+    await mkdir(appDir, { recursive: true });
+    await writeFile(path.join(appDir, "layout.tsx"), `export default function Layout({ children }) { return <div>{children}</div>; }`, "utf-8");
+    await writeFile(path.join(appDir, "page.tsx"), `export default function Page() { return <div>Test</div>; }`, "utf-8");
+
+    const result = await runCommand(
+      "node",
+      [cliExecutable, "validate", "--contract", contractPath, "--workspace-root", tempRoot, "--format", "json", "--exit-codes", "v2"],
+      { cwd: tempRoot },
+    );
+
+    // Should pass schema validation
+    assert.equal(result.exitCode, 0, `Command failed: ${result.stderr}\n${result.stdout}`);
+  } finally {
+    await rm(tempRoot, { recursive: true, force: true });
+  }
+});
diff --git a/packages/interfacectl-validator/dist/index.d.ts.map b/packages/interfacectl-validator/dist/index.d.ts.map
index a94b421..b1790f1 100644
--- a/packages/interfacectl-validator/dist/index.d.ts.map
+++ b/packages/interfacectl-validator/dist/index.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,iBAAiB,EACjB,iBAAiB,EACjB,aAAa,EACb,iBAAiB,EAKlB,MAAM,YAAY,CAAC;AAOpB,wBAAgB,wBAAwB,IAAI,MAAM,CAEjD;AAED,MAAM,WAAW,2BAA2B;IAC1C,EAAE,EAAE,OAAO,CAAC;IACZ,MAAM,EAAE,MAAM,EAAE,CAAC;IACjB,QAAQ,CAAC,EAAE,iBAAiB,CAAC;CAC9B;AAED,wBAAgB,yBAAyB,CACvC,YAAY,EAAE,OAAO,EACrB,MAAM,EAAE,MAAM,GACb,2BAA2B,CAyB7B;AAED,wBAAgB,yBAAyB,CACvC,QAAQ,EAAE,iBAAiB,EAC3B,UAAU,EAAE,iBAAiB,GAC5B,aAAa,CA6Tf;AAED,wBAAgB,0BAA0B,CACxC,QAAQ,EAAE,iBAAiB,EAC3B,WAAW,EAAE,iBAAiB,EAAE,GAC/B,iBAAiB,CA6CnB;AAyCD,YAAY,EACV,iBAAiB,EACjB,eAAe,EACf,eAAe,EACf,mBAAmB,EACnB,iBAAiB,EACjB,wBAAwB,EACxB,qBAAqB,EACrB,sBAAsB,EACtB,uBAAuB,EACvB,uBAAuB,EACvB,yBAAyB,EACzB,aAAa,EACb,cAAc,EACd,iBAAiB,EACjB,kBAAkB,EAClB,UAAU,EACV,SAAS,EACT,cAAc,EACd,SAAS,EACT,QAAQ,EACR,WAAW,EACX,iBAAiB,EACjB,eAAe,EACf,WAAW,EACX,UAAU,EACV,QAAQ,EACR,QAAQ,GACT,MAAM,YAAY,CAAC;AAEpB,OAAO,EACL,oBAAoB,EACpB,sBAAsB,EACtB,0BAA0B,EAC1B,kBAAkB,EAClB,cAAc,EACd,kBAAkB,EAClB,KAAK,gBAAgB,GACtB,MAAM,sBAAsB,CAAC"}
\ No newline at end of file
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAEA,OAAO,EACL,iBAAiB,EACjB,iBAAiB,EACjB,aAAa,EACb,iBAAiB,EAKlB,MAAM,YAAY,CAAC;AAOpB,wBAAgB,wBAAwB,IAAI,MAAM,CAEjD;AAED,MAAM,WAAW,2BAA2B;IAC1C,EAAE,EAAE,OAAO,CAAC;IACZ,MAAM,EAAE,MAAM,EAAE,CAAC;IACjB,QAAQ,CAAC,EAAE,iBAAiB,CAAC;CAC9B;AAED,wBAAgB,yBAAyB,CACvC,YAAY,EAAE,OAAO,EACrB,MAAM,EAAE,MAAM,GACb,2BAA2B,CAyB7B;AA4ID,wBAAgB,yBAAyB,CACvC,QAAQ,EAAE,iBAAiB,EAC3B,UAAU,EAAE,iBAAiB,GAC5B,aAAa,CAqUf;AAED,wBAAgB,0BAA0B,CACxC,QAAQ,EAAE,iBAAiB,EAC3B,WAAW,EAAE,iBAAiB,EAAE,GAC/B,iBAAiB,CA6CnB;AAyCD,YAAY,EACV,iBAAiB,EACjB,eAAe,EACf,eAAe,EACf,mBAAmB,EACnB,iBAAiB,EACjB,wBAAwB,EACxB,qBAAqB,EACrB,sBAAsB,EACtB,uBAAuB,EACvB,uBAAuB,EACvB,yBAAyB,EACzB,aAAa,EACb,cAAc,EACd,iBAAiB,EACjB,kBAAkB,EAClB,UAAU,EACV,SAAS,EACT,cAAc,EACd,SAAS,EACT,QAAQ,EACR,WAAW,EACX,iBAAiB,EACjB,eAAe,EACf,WAAW,EACX,UAAU,EACV,QAAQ,EACR,QAAQ,GACT,MAAM,YAAY,CAAC;AAEpB,OAAO,EACL,oBAAoB,EACpB,sBAAsB,EACtB,0BAA0B,EAC1B,kBAAkB,EAClB,cAAc,EACd,kBAAkB,EAClB,KAAK,gBAAgB,GACtB,MAAM,sBAAsB,CAAC"}
\ No newline at end of file
diff --git a/packages/interfacectl-validator/dist/index.js b/packages/interfacectl-validator/dist/index.js
index 305b74a..1494f2b 100644
--- a/packages/interfacectl-validator/dist/index.js
+++ b/packages/interfacectl-validator/dist/index.js
@@ -27,6 +27,116 @@ export function validateContractStructure(contractData, schema) {
         contract: contractData,
     };
 }
+function validateColorPolicy(contract, descriptor, violations) {
+    const colorPolicy = contract.color;
+    if (!colorPolicy) {
+        return;
+    }
+    // Validate raw color literals
+    if (colorPolicy.rawValues) {
+        const policy = colorPolicy.rawValues.policy;
+        const allowlist = new Set(colorPolicy.rawValues.allowlist ?? []);
+        const denylist = new Set(colorPolicy.rawValues.denylist ?? []);
+        for (const color of descriptor.colors) {
+            const colorValue = color.value;
+            // Skip CSS variables
+            if (colorValue.startsWith("var(")) {
+                continue;
+            }
+            // Check if it's a raw color literal (hex, rgb, hsl)
+            const isRawLiteral = isRawColorLiteral(colorValue);
+            if (!isRawLiteral) {
+                continue;
+            }
+            // Check denylist first (denylist takes precedence, even when policy is "off")
+            if (denylist.has(colorValue)) {
+                violations.push({
+                    surfaceId: descriptor.surfaceId,
+                    type: "color-raw-value-used",
+                    message: `Raw color literal "${colorValue}" is not allowed (denylist). Use design tokens instead.`,
+                    details: {
+                        colorValue,
+                        source: color.source,
+                        policy: policy ?? "off",
+                        jsonPointer: "/color/rawValues",
+                    },
+                });
+                continue;
+            }
+            // Only check allowlist and policy violations when policy is not "off"
+            if (policy !== "off") {
+                // Check allowlist
+                if (allowlist.has(colorValue)) {
+                    continue; // Allowlisted, skip
+                }
+                // Emit violation based on policy
+                if (policy === "warn" || policy === "strict") {
+                    violations.push({
+                        surfaceId: descriptor.surfaceId,
+                        type: "color-raw-value-used",
+                        message: `Raw color literal "${colorValue}" detected. Use design tokens instead.`,
+                        details: {
+                            colorValue,
+                            source: color.source,
+                            policy,
+                            jsonPointer: "/color/rawValues",
+                        },
+                    });
+                }
+            }
+        }
+    }
+    // Validate token namespaces
+    if (colorPolicy.sourceOfTruth &&
+        colorPolicy.sourceOfTruth.type === "tokens" &&
+        colorPolicy.sourceOfTruth.tokenNamespaces) {
+        const allowedNamespaces = colorPolicy.sourceOfTruth.tokenNamespaces;
+        for (const color of descriptor.colors) {
+            const colorValue = color.value;
+            // Only check CSS variables
+            if (!colorValue.startsWith("var(")) {
+                continue;
+            }
+            // Extract variable name from var(--name)
+            const varMatch = colorValue.match(/var\((--[^)]+)\)/);
+            if (!varMatch) {
+                continue;
+            }
+            const varName = varMatch[1];
+            // Check if variable name starts with any allowed namespace
+            const hasAllowedNamespace = allowedNamespaces.some((namespace) => varName.startsWith(namespace));
+            if (!hasAllowedNamespace) {
+                violations.push({
+                    surfaceId: descriptor.surfaceId,
+                    type: "color-token-namespace-violation",
+                    message: `Color token "${varName}" does not start with any allowed namespace. Allowed namespaces: ${allowedNamespaces.join(", ")}.`,
+                    details: {
+                        tokenName: varName,
+                        allowedNamespaces,
+                        source: color.source,
+                        jsonPointer: "/color/sourceOfTruth/tokenNamespaces",
+                    },
+                });
+            }
+        }
+    }
+}
+function isRawColorLiteral(value) {
+    const trimmed = value.trim().toLowerCase();
+    // Hex colors (#rgb, #rrggbb, #rrggbbaa)
+    if (/^#([0-9a-f]{3}|[0-9a-f]{6}|[0-9a-f]{8})$/i.test(trimmed)) {
+        return true;
+    }
+    // rgb/rgba colors
+    if (/^rgba?\s*\(/.test(trimmed)) {
+        return true;
+    }
+    // hsl/hsla colors
+    if (/^hsla?\s*\(/.test(trimmed)) {
+        return true;
+    }
+    return false;
+}
 export function evaluateSurfaceCompliance(contract, descriptor) {
     const surface = findSurface(contract.surfaces, descriptor.surfaceId);
     const violations = [];
@@ -81,21 +191,28 @@ export function evaluateSurfaceCompliance(contract, descriptor) {
             });
         }
     }
-    const allowedColors = new Set(surface.allowedColors);
-    for (const color of descriptor.colors) {
-        if (!allowedColors.has(color.value)) {
-            violations.push({
-                surfaceId: descriptor.surfaceId,
-                type: "color-not-allowed",
-                message: `Color "${color.value}" is not allowed for surface "${descriptor.surfaceId}".`,
-                details: {
-                    color: color.value,
-                    source: color.source,
-                    allowedColors: [...allowedColors],
-                },
-            });
+    // Legacy allowedColors check (deprecated)
+    if (surface.allowedColors) {
+        const allowedColors = new Set(surface.allowedColors);
+        for (const color of descriptor.colors) {
+            if (!allowedColors.has(color.value)) {
+                violations.push({
+                    surfaceId: descriptor.surfaceId,
+                    type: "color-not-allowed",
+                    message: `Color "${color.value}" is not allowed for surface "${descriptor.surfaceId}".`,
+                    details: {
+                        color: color.value,
+                        source: color.source,
+                        allowedColors: [...allowedColors],
+                    },
+                });
+            }
         }
     }
+    // New color policy validation
+    if (contract.color) {
+        validateColorPolicy(contract, descriptor, violations);
+    }
     const reportedWidth = descriptor.layout.maxContentWidth;
     if (reportedWidth === null || reportedWidth === undefined) {
         violations.push({
diff --git a/packages/interfacectl-validator/dist/schema/surfaces.web.contract.schema.json b/packages/interfacectl-validator/dist/schema/surfaces.web.contract.schema.json
index 7a0a1f6..243f641 100644
--- a/packages/interfacectl-validator/dist/schema/surfaces.web.contract.schema.json
+++ b/packages/interfacectl-validator/dist/schema/surfaces.web.contract.schema.json
@@ -119,6 +119,9 @@
                 "minLength": 1
               },
               "uniqueItems": true
+            },
+            "pageFrame": {
+              "$ref": "#/$defs/pageFrame"
             }
           }
         }
@@ -183,6 +186,39 @@
           }
         }
       }
+    },
+    "pageFrame": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "containerSelector",
+        "containerMaxWidthPx",
+        "paddingXpx"
+      ],
+      "properties": {
+        "containerSelector": {
+          "type": "string",
+          "minLength": 1
+        },
+        "containerMaxWidthPx": {
+          "type": "number",
+          "minimum": 0
+        },
+        "paddingXpx": {
+          "type": "number",
+          "minimum": 0
+        },
+        "alignment": {
+          "type": "string",
+          "enum": ["center", "left"],
+          "default": "center"
+        },
+        "enforcement": {
+          "type": "string",
+          "enum": ["strict", "warn"],
+          "default": "strict"
+        }
+      }
     }
   }
 }
diff --git a/packages/interfacectl-validator/src/index.ts b/packages/interfacectl-validator/src/index.ts
index 4b8bb20..0238eee 100644
--- a/packages/interfacectl-validator/src/index.ts
+++ b/packages/interfacectl-validator/src/index.ts
@@ -8,6 +8,7 @@ import {
   DriftViolation,
   ContractSection,
   ContractSurface,
+  PageFrameLayoutDescriptor,
 } from "./types.js";
 import bundledSchema from "./schema/surfaces.web.contract.schema.json" with {
   type: "json",
@@ -55,6 +56,144 @@ export function validateContractStructure(
   };
 }
 
+function validateColorPolicy(
+  contract: InterfaceContract,
+  descriptor: SurfaceDescriptor,
+  violations: DriftViolation[],
+): void {
+  const colorPolicy = contract.color;
+  if (!colorPolicy) {
+    return;
+  }
+
+  // Validate raw color literals
+  if (colorPolicy.rawValues) {
+    const policy = colorPolicy.rawValues.policy;
+    const allowlist = new Set(colorPolicy.rawValues.allowlist ?? []);
+    const denylist = new Set(colorPolicy.rawValues.denylist ?? []);
+
+    for (const color of descriptor.colors) {
+      const colorValue = color.value;
+      
+      // Skip CSS variables
+      if (colorValue.startsWith("var(")) {
+        continue;
+      }
+
+      // Check if it's a raw color literal (hex, rgb, hsl)
+      const isRawLiteral = isRawColorLiteral(colorValue);
+      if (!isRawLiteral) {
+        continue;
+      }
+
+      // Check denylist first (denylist takes precedence, even when policy is "off")
+      if (denylist.has(colorValue)) {
+        violations.push({
+          surfaceId: descriptor.surfaceId,
+          type: "color-raw-value-used",
+          message: `Raw color literal "${colorValue}" is not allowed (denylist). Use design tokens instead.`,
+          details: {
+            colorValue,
+            source: color.source,
+            policy: policy ?? "off",
+            jsonPointer: "/color/rawValues",
+          },
+        });
+        continue;
+      }
+
+      // Only check allowlist and policy violations when policy is not "off"
+      if (policy !== "off") {
+        // Check allowlist
+        if (allowlist.has(colorValue)) {
+          continue; // Allowlisted, skip
+        }
+
+        // Emit violation based on policy
+        if (policy === "warn" || policy === "strict") {
+          violations.push({
+            surfaceId: descriptor.surfaceId,
+            type: "color-raw-value-used",
+            message: `Raw color literal "${colorValue}" detected. Use design tokens instead.`,
+            details: {
+              colorValue,
+              source: color.source,
+              policy,
+              jsonPointer: "/color/rawValues",
+            },
+          });
+        }
+      }
+    }
+  }
+
+  // Validate token namespaces
+  if (
+    colorPolicy.sourceOfTruth &&
+    colorPolicy.sourceOfTruth.type === "tokens" &&
+    colorPolicy.sourceOfTruth.tokenNamespaces
+  ) {
+    const allowedNamespaces = colorPolicy.sourceOfTruth.tokenNamespaces;
+    
+    for (const color of descriptor.colors) {
+      const colorValue = color.value;
+      
+      // Only check CSS variables
+      if (!colorValue.startsWith("var(")) {
+        continue;
+      }
+
+      // Extract variable name from var(--name)
+      const varMatch = colorValue.match(/var\((--[^)]+)\)/);
+      if (!varMatch) {
+        continue;
+      }
+
+      const varName = varMatch[1];
+      
+      // Check if variable name starts with any allowed namespace
+      const hasAllowedNamespace = allowedNamespaces.some((namespace) =>
+        varName.startsWith(namespace),
+      );
+
+      if (!hasAllowedNamespace) {
+        violations.push({
+          surfaceId: descriptor.surfaceId,
+          type: "color-token-namespace-violation",
+          message: `Color token "${varName}" does not start with any allowed namespace. Allowed namespaces: ${allowedNamespaces.join(", ")}.`,
+          details: {
+            tokenName: varName,
+            allowedNamespaces,
+            source: color.source,
+            jsonPointer: "/color/sourceOfTruth/tokenNamespaces",
+          },
+        });
+      }
+    }
+  }
+}
+
+function isRawColorLiteral(value: string): boolean {
+  const trimmed = value.trim().toLowerCase();
+  
+  // Hex colors (#rgb, #rrggbb, #rrggbbaa)
+  if (/^#([0-9a-f]{3}|[0-9a-f]{6}|[0-9a-f]{8})$/i.test(trimmed)) {
+    return true;
+  }
+
+  // rgb/rgba colors
+  if (/^rgba?\s*\(/.test(trimmed)) {
+    return true;
+  }
+
+  // hsl/hsla colors
+  if (/^hsla?\s*\(/.test(trimmed)) {
+    return true;
+  }
+
+  return false;
+}
+
 export function evaluateSurfaceCompliance(
   contract: InterfaceContract,
   descriptor: SurfaceDescriptor,
@@ -120,22 +259,30 @@ export function evaluateSurfaceCompliance(
     }
   }
 
-  const allowedColors = new Set(surface.allowedColors);
-  for (const color of descriptor.colors) {
-    if (!allowedColors.has(color.value)) {
-      violations.push({
-        surfaceId: descriptor.surfaceId,
-        type: "color-not-allowed",
-        message: `Color "${color.value}" is not allowed for surface "${descriptor.surfaceId}".`,
-        details: {
-          color: color.value,
-          source: color.source,
-          allowedColors: [...allowedColors],
-        },
-      });
+  // Legacy allowedColors check (deprecated)
+  if (surface.allowedColors) {
+    const allowedColors = new Set(surface.allowedColors);
+    for (const color of descriptor.colors) {
+      if (!allowedColors.has(color.value)) {
+        violations.push({
+          surfaceId: descriptor.surfaceId,
+          type: "color-not-allowed",
+          message: `Color "${color.value}" is not allowed for surface "${descriptor.surfaceId}".`,
+          details: {
+            color: color.value,
+            source: color.source,
+            allowedColors: [...allowedColors],
+          },
+        });
+      }
     }
   }
 
+  // New color policy validation
+  if (contract.color) {
+    validateColorPolicy(contract, descriptor, violations);
+  }
+
   const reportedWidth = descriptor.layout.maxContentWidth;
   if (reportedWidth === null || reportedWidth === undefined) {
     violations.push({
@@ -223,6 +370,154 @@ export function evaluateSurfaceCompliance(
     }
   }
 
+  // Validate pageFrame layout if contract defines it
+  if (surface.layout.pageFrame && descriptor.layout.pageFrame) {
+    const pageFrameContract = surface.layout.pageFrame;
+    const pageFrameDescriptor = descriptor.layout.pageFrame;
+    const enforcement = pageFrameContract.enforcement ?? "strict";
+
+    // Check if selector is supported
+    const containerSelector = pageFrameContract.containerSelector;
+    const isSupportedSelector =
+      containerSelector === '[data-contract="page-container"]' ||
+      containerSelector === "[data-contract='page-container']" ||
+      containerSelector === '[data-contract={page-container}]';
+
+    if (!isSupportedSelector) {
+      const violation: DriftViolation = {
+        surfaceId: descriptor.surfaceId,
+        type: "layout-pageframe-selector-unsupported",
+        message: `Page frame container selector "${containerSelector}" is not supported in static analysis. Use '[data-contract="page-container"]' instead.`,
+        details: {
+          selector: containerSelector,
+          supportedSelectors: ['[data-contract="page-container"]'],
+        },
+      };
+      violations.push(violation);
+    } else {
+      // Validate container exists
+      if (
+        pageFrameDescriptor.maxWidthPx === null &&
+        pageFrameDescriptor.paddingLeftPx === null &&
+        pageFrameDescriptor.paddingRightPx === null
+      ) {
+        violations.push({
+          surfaceId: descriptor.surfaceId,
+          type: "layout-pageframe-container-not-found",
+          message: `Page container with data-contract="page-container" not found for surface "${descriptor.surfaceId}".`,
+          details: {
+            selector: containerSelector,
+            source: pageFrameDescriptor.source,
+          },
+        });
+      } else {
+        // Validate max-width
+        const expectedMaxWidth = pageFrameContract.containerMaxWidthPx;
+        const actualMaxWidth = pageFrameDescriptor.maxWidthPx;
+
+        if (actualMaxWidth === null) {
+          // Check if clamp/calc was detected
+          if (pageFrameDescriptor.maxWidthHasClampCalc) {
+            violations.push({
+              surfaceId: descriptor.surfaceId,
+              type: "layout-pageframe-non-deterministic-value",
+              message: `Page frame max-width uses non-deterministic expression (clamp/calc) for surface "${descriptor.surfaceId}". Expected ${expectedMaxWidth}px. Static analysis requires deterministic px values. Use fixed px values in inline styles or CSS rules targeting [data-contract="page-container"].`,
+              details: {
+                property: "max-width",
+                expected: expectedMaxWidth,
+                actual: null,
+                selector: containerSelector,
+                source: pageFrameDescriptor.source,
+              },
+            });
+          } else {
+            violations.push({
+              surfaceId: descriptor.surfaceId,
+              type: "layout-pageframe-unextractable-value",
+              message: `Page frame max-width could not be extracted for surface "${descriptor.surfaceId}". Expected ${expectedMaxWidth}px. Use inline styles, CSS rules targeting [data-contract="page-container"], or Tailwind bracket classes (max-w-[${expectedMaxWidth}px]).`,
+              details: {
+                property: "max-width",
+                expected: expectedMaxWidth,
+                actual: null,
+                selector: containerSelector,
+                source: pageFrameDescriptor.source,
+              },
+            });
+          }
+        } else if (actualMaxWidth !== expectedMaxWidth) {
+          violations.push({
+            surfaceId: descriptor.surfaceId,
+            type: "layout-pageframe-maxwidth-mismatch",
+            message: `Page frame max-width mismatch for surface "${descriptor.surfaceId}": expected ${expectedMaxWidth}px, found ${actualMaxWidth}px.`,
+            details: {
+              expected: expectedMaxWidth,
+              actual: actualMaxWidth,
+              selector: containerSelector,
+              source: pageFrameDescriptor.source,
+            },
+          });
+        }
+
+        // Validate padding
+        const expectedPadding = pageFrameContract.paddingXpx;
+        const actualPaddingLeft = pageFrameDescriptor.paddingLeftPx;
+        const actualPaddingRight = pageFrameDescriptor.paddingRightPx;
+
+        if (actualPaddingLeft === null || actualPaddingRight === null) {
+          // Check if clamp/calc was detected
+          if (pageFrameDescriptor.paddingHasClampCalc) {
+            violations.push({
+              surfaceId: descriptor.surfaceId,
+              type: "layout-pageframe-non-deterministic-value",
+              message: `Page frame padding uses non-deterministic expression (clamp/calc) for surface "${descriptor.surfaceId}". Expected ${expectedPadding}px. Static analysis requires deterministic px values. Use fixed px values in inline styles or CSS rules targeting [data-contract="page-container"].`,
+              details: {
+                property: "padding",
+                expected: expectedPadding,
+                actualLeft: actualPaddingLeft,
+                actualRight: actualPaddingRight,
+                selector: containerSelector,
+                source: pageFrameDescriptor.source,
+              },
+            });
+          } else {
+            violations.push({
+              surfaceId: descriptor.surfaceId,
+              type: "layout-pageframe-unextractable-value",
+              message: `Page frame padding could not be extracted for surface "${descriptor.surfaceId}". Expected ${expectedPadding}px. Static analysis requires deterministic px values. Use inline styles, CSS rules targeting [data-contract="page-container"], or Tailwind bracket classes (px-[${expectedPadding}px]).`,
+              details: {
+                property: "padding",
+                expected: expectedPadding,
+                actualLeft: actualPaddingLeft,
+                actualRight: actualPaddingRight,
+                selector: containerSelector,
+                source: pageFrameDescriptor.source,
+              },
+            });
+          }
+        } else if (
+          actualPaddingLeft !== expectedPadding ||
+          actualPaddingRight !== expectedPadding
+        ) {
+          violations.push({
+            surfaceId: descriptor.surfaceId,
+            type: "layout-pageframe-padding-mismatch",
+            message: `Page frame padding mismatch for surface "${descriptor.surfaceId}": expected ${expectedPadding}px on both sides, found left=${actualPaddingLeft}px right=${actualPaddingRight}px.`,
+            details: {
+              expected: expectedPadding,
+              actualLeft: actualPaddingLeft,
+              actualRight: actualPaddingRight,
+              selector: containerSelector,
+              source: pageFrameDescriptor.source,
+            },
+          });
+        }
+      }
+    }
+
+    // Apply enforcement mode: warn mode violations don't affect exit code
+    // This is handled at the CLI level by checking violation severity
+  }
+
   return {
     surfaceId: descriptor.surfaceId,
     violations,
@@ -287,10 +582,21 @@ function formatAjvErrors(errors: ErrorObject[] | null | undefined): string[] {
   return errors.map((error) => {
     const dataPath = error.instancePath || error.schemaPath;
     const baseMessage = error.message ?? "Validation error";
+    
+    // Enhance error messages for common schema issues
+    let enhancedMessage = baseMessage;
+    if (error.keyword === "additionalProperties" && error.params?.additionalProperty) {
+      const prop = error.params.additionalProperty;
+      enhancedMessage = `Additional property "${prop}" is not allowed. This may indicate a capability gap - the field is not supported by the current schema version.`;
+    } else if (error.keyword === "required" && error.params?.missingProperty) {
+      const prop = error.params.missingProperty;
+      enhancedMessage = `Required property "${prop}" is missing.`;
+    }
+    
     if (error.params && Object.keys(error.params).length > 0) {
-      return `${dataPath}: ${baseMessage} (${JSON.stringify(error.params)})`;
+      return `${dataPath}: ${enhancedMessage} (${JSON.stringify(error.params)})`;
     }
-    return `${dataPath}: ${baseMessage}`;
+    return `${dataPath}: ${enhancedMessage}`;
   });
 }
 
@@ -318,6 +624,7 @@ export type {
   SurfaceColorDescriptor,
   SurfaceMotionDescriptor,
   SurfaceLayoutDescriptor,
+  PageFrameLayoutDescriptor,
   SurfaceReport,
   DriftViolation,
   ValidationSummary,
diff --git a/packages/interfacectl-validator/src/schema/surfaces.web.contract.schema.json b/packages/interfacectl-validator/src/schema/surfaces.web.contract.schema.json
index 7a0a1f6..65c36ba 100644
--- a/packages/interfacectl-validator/src/schema/surfaces.web.contract.schema.json
+++ b/packages/interfacectl-validator/src/schema/surfaces.web.contract.schema.json
@@ -43,6 +43,9 @@
     },
     "constraints": {
       "$ref": "#/$defs/constraints"
+    },
+    "color": {
+      "$ref": "#/$defs/color"
     }
   },
   "$defs": {
@@ -55,7 +58,6 @@
         "type",
         "requiredSections",
         "allowedFonts",
-        "allowedColors",
         "layout"
       ],
       "properties": {
@@ -99,7 +101,8 @@
             "type": "string",
             "minLength": 1
           },
-          "uniqueItems": true
+          "uniqueItems": true,
+          "description": "Deprecated: Use color.sourceOfTruth and color.rawValues instead. This field will be removed in a future version."
         },
         "layout": {
           "type": "object",
@@ -119,6 +122,9 @@
                 "minLength": 1
               },
               "uniqueItems": true
+            },
+            "pageFrame": {
+              "$ref": "#/$defs/pageFrame"
             }
           }
         }
@@ -183,6 +189,189 @@
           }
         }
       }
+    },
+    "pageFrame": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "containerSelector",
+        "containerMaxWidthPx",
+        "paddingXpx"
+      ],
+      "properties": {
+        "containerSelector": {
+          "type": "string",
+          "minLength": 1
+        },
+        "containerMaxWidthPx": {
+          "type": "number",
+          "minimum": 0
+        },
+        "paddingXpx": {
+          "type": "number",
+          "minimum": 0
+        },
+        "alignment": {
+          "type": "string",
+          "enum": ["center", "left"],
+          "default": "center"
+        },
+        "enforcement": {
+          "type": "string",
+          "enum": ["strict", "warn"],
+          "default": "strict"
+        }
+      }
+    },
+    "color": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "sourceOfTruth": {
+          "$ref": "#/$defs/colorSourceOfTruth"
+        },
+        "rawValues": {
+          "$ref": "#/$defs/colorRawValues"
+        },
+        "semantics": {
+          "$ref": "#/$defs/colorSemantics"
+        },
+        "consistency": {
+          "$ref": "#/$defs/colorConsistency"
+        }
+      }
+    },
+    "colorSourceOfTruth": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["type"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": ["tokens", "none"]
+        },
+        "tokenNamespaces": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "minLength": 1
+          },
+          "uniqueItems": true
+        }
+      },
+      "if": {
+        "properties": {
+          "type": {
+            "const": "tokens"
+          }
+        }
+      },
+      "then": {
+        "required": ["tokenNamespaces"]
+      }
+    },
+    "colorRawValues": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["policy"],
+      "properties": {
+        "policy": {
+          "type": "string",
+          "enum": ["off", "warn", "strict"]
+        },
+        "allowlist": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "minLength": 1
+          },
+          "uniqueItems": true
+        },
+        "denylist": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "minLength": 1
+          },
+          "uniqueItems": true
+        }
+      }
+    },
+    "colorSemantics": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "roles": {
+          "type": "object",
+          "additionalProperties": false,
+          "properties": {
+            "accent": {
+              "type": "object",
+              "additionalProperties": false,
+              "properties": {
+                "enforcement": {
+                  "type": "string",
+                  "enum": ["off", "warn", "strict"]
+                }
+              }
+            },
+            "text": {
+              "type": "object",
+              "additionalProperties": false,
+              "properties": {
+                "enforcement": {
+                  "type": "string",
+                  "enum": ["off", "warn", "strict"]
+                }
+              }
+            },
+            "background": {
+              "type": "object",
+              "additionalProperties": false,
+              "properties": {
+                "enforcement": {
+                  "type": "string",
+                  "enum": ["off", "warn", "strict"]
+                }
+              }
+            },
+            "border": {
+              "type": "object",
+              "additionalProperties": false,
+              "properties": {
+                "enforcement": {
+                  "type": "string",
+                  "enum": ["off", "warn", "strict"]
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "colorConsistency": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "acrossSurfaces": {
+          "type": "object",
+          "additionalProperties": false,
+          "properties": {
+            "enforcement": {
+              "type": "string",
+              "enum": ["off", "warn", "strict"]
+            },
+            "signals": {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "enum": ["token-name", "css-var-name", "class-fragment"]
+              },
+              "uniqueItems": true
+            }
+          }
+        }
+      }
     }
   }
 }
diff --git a/packages/interfacectl-validator/src/types.ts b/packages/interfacectl-validator/src/types.ts
index 1746757..339e7f3 100644
--- a/packages/interfacectl-validator/src/types.ts
+++ b/packages/interfacectl-validator/src/types.ts
@@ -1,15 +1,24 @@
 export type SurfaceType = "web" | "cli";
 
+export interface PageFrameLayout {
+  containerSelector: string;
+  containerMaxWidthPx: number;
+  paddingXpx: number;
+  alignment?: "center" | "left";
+  enforcement?: "strict" | "warn";
+}
+
 export interface ContractSurface {
   id: string;
   displayName: string;
   type: SurfaceType;
   requiredSections: string[];
   allowedFonts: string[];
-  allowedColors: string[];
+  allowedColors?: string[]; // Deprecated: use color.sourceOfTruth and color.rawValues
   layout: {
     maxContentWidth: number;
     requiredContainers?: string[];
+    pageFrame?: PageFrameLayout;
   };
 }
 
@@ -26,6 +35,44 @@ export interface ContractConstraints {
   };
 }
 
+export interface ColorSourceOfTruth {
+  type: "tokens" | "none";
+  tokenNamespaces?: string[];
+}
+
+export interface ColorRawValues {
+  policy: "off" | "warn" | "strict";
+  allowlist?: string[];
+  denylist?: string[];
+}
+
+export interface ColorRoleEnforcement {
+  enforcement: "off" | "warn" | "strict";
+}
+
+export interface ColorSemantics {
+  roles?: {
+    accent?: ColorRoleEnforcement;
+    text?: ColorRoleEnforcement;
+    background?: ColorRoleEnforcement;
+    border?: ColorRoleEnforcement;
+  };
+}
+
+export interface ColorConsistency {
+  acrossSurfaces?: {
+    enforcement: "off" | "warn" | "strict";
+    signals?: ("token-name" | "css-var-name" | "class-fragment")[];
+  };
+}
+
+export interface ColorPolicy {
+  sourceOfTruth?: ColorSourceOfTruth;
+  rawValues?: ColorRawValues;
+  semantics?: ColorSemantics;
+  consistency?: ColorConsistency;
+}
+
 export interface InterfaceContract {
   contractId: string;
   version: string;
@@ -33,6 +80,7 @@ export interface InterfaceContract {
   surfaces: ContractSurface[];
   sections: ContractSection[];
   constraints: ContractConstraints;
+  color?: ColorPolicy;
 }
 
 export interface SurfaceSectionDescriptor {
@@ -56,11 +104,22 @@ export interface SurfaceMotionDescriptor {
   source?: string;
 }
 
+export interface PageFrameLayoutDescriptor {
+  containerSelector: string;
+  maxWidthPx?: number | null;
+  paddingLeftPx?: number | null;
+  paddingRightPx?: number | null;
+  source?: string;
+  maxWidthHasClampCalc?: boolean;
+  paddingHasClampCalc?: boolean;
+}
+
 export interface SurfaceLayoutDescriptor {
   maxContentWidth?: number | null;
   containers?: string[];
   containerSources?: string[];
   source?: string;
+  pageFrame?: PageFrameLayoutDescriptor;
 }
 
 export interface SurfaceDescriptor {
@@ -81,10 +140,18 @@ export type DriftViolationType =
   | "layout-width-exceeded"
   | "layout-width-undetermined"
   | "layout-container-missing"
+  | "layout-pageframe-selector-unsupported"
+  | "layout-pageframe-container-not-found"
+  | "layout-pageframe-maxwidth-mismatch"
+  | "layout-pageframe-padding-mismatch"
+  | "layout-pageframe-non-deterministic-value"
+  | "layout-pageframe-unextractable-value"
   | "motion-duration-not-allowed"
   | "motion-timing-not-allowed"
   | "descriptor-missing"
-  | "descriptor-unused";
+  | "descriptor-unused"
+  | "color-raw-value-used"
+  | "color-token-namespace-violation";
 
 export interface DriftViolation {
   surfaceId: string;