{ "url": "https://sellercentral.amazon.com", "auditedAt": "2026-07-26T14:26:17.298Z", "mode": "report", "status": "completed", "statusDetail": "Atomic coverage complete across 58 checks and four representative public/auth/localized paths. Account creation beyond the credential boundary and authenticated Seller Central were not covered.", "page": { "appType": "hybrid", "framework": "Amazon AUI plus custom Poly marketing components", "notes": "Public seller marketing page with sign-in and onboarding links. Authenticated Seller Central was outside unauthenticated reach." }, "evidenceUsed": [ "screenshot", "dom", "evaluate-probe", "layout-metrics", "trace", "har", "lighthouse", "discoverability", "headers", "cookies", "trackers", "secrets", "images", "heap-summary", "raw robots/sitemap" ], "guidanceConsulted": [ "dark-mode", "component-specific-light-dark-theme", "accessibility", "adapt-scrollbar-to-contrast-preferences", "same-document-transitions", "cross-document-transitions", "group-element-transitions", "faster-spa-view-transitions", "scrollytelling", "parallax-scroll-effects", "scroll-entry-exit-effects", "carousel-slide-effects", "physics-based-easing", "individual-transform-properties", "animate-element-entry-exit", "animate-to-from-top-layer", "animate-to-intrinsic-sizes", "dynamic-sibling-animations", "interactive-content-reveal", "pull-to-reveal", "swipe-to-remove", "shrinking-header-on-scroll", "scroll-progress-indicator", "scroll-position-aware-elements", "scroll-snap-realtime-feedback", "scroll-snap-state-sync", "scroll-target-on-load", "soft-edge-content-fade", "scrollability-affordance-hints", "anchor-positioning-tab-underline", "position-aware-tooltips", "interest-triggered-tooltips", "interest-triggered-action-previews", "directional-navigation-transitions", "carousel-snap-highlights", "navigation-drawer", "stack-drill-down", "persistent-app-tours", "persistent-toast-notifications", "light-dismiss-a-dialog", "platform-controls-dismiss-dialog", "declarative-dialog-popover-control", "animated-select-picker", "branded-select-styling", "brand-consistent-forms", "custom-select-picker-layouts", "rich-media-picker", "complex-shapes", "shaped-cutouts", "overflow-clipping-control", "visually-texture-content", "apply-webgl-shaders", "interactive-content-in-3d-scenes", "highlight-text-ranges", "prevent-text-wrapping", "customize-scrollbar-color-and-thickness", "export-html-media-from-canvas", "fluid-scaling", "calculate-with-intrinsic-sizes", "css-layout", "size-aware-styling", "content-based-styling", "child-state-based-styling", "design-token-reactivity", "dynamic-sibling-styling", "form-fields-automatically-fit-contents", "improve-text-layout-and-legibility", "forms", "accessible-error-announcement", "required-field-feedback", "validate-input-after-interaction", "identify-inp-causes", "schedule-tasks-by-priority", "optimize-preload-priority", "improve-next-page-load-performance", "interactions-in-complex-layouts", "performance", "visually-stable-font-fallbacks", "break-up-long-tasks", "identify-heavy-scripts", "optimize-script-priority", "defer-rendering-heavy-content", "defer-work-until-scroll-ends", "optimize-image-priority", "conditional-async-dependencies", "expose-canvas-content-to-browser-features", "move-dom-element-without-losing-state", "precise-text-alignment", "visually-stable-mixed-fonts", "css", "html", "reduce-style-repetition", "security", "privacy", "batch-analytics-events", "full-session-analytics", "calculate-total-foreground-time", "passkeys", "passkey-registration", "passkey-authentication", "passkey-reauthentication", "passkey-conditional-create", "passkey-management", "flicker-free-client-side-ab-testing", "consistent-cross-document-transitions", "stabilize-reactive-state", "resilient-context-menus-and-nested-dropdowns", "persistent-top-layer-ui", "detect-initial-visibility-state", "sequence-distributed-events", "translator", "language-detection", "support-global-calendar-systems", "capture-location-agnostic-data", "format-human-readable-durations", "manage-recurring-intervals", "calculate-event-differentials", "coordinate-global-events", "model-partial-time-concepts", "search-hidden-content", "select-menu-interaction", "style-parent-with-has", "autofill-address-form", "autofill-payment-form", "autofill-sign-in-form", "autofill-sign-up-form", "autofill-highlight-inputs", "deliver-optimized-decorative-images", "resolution-optimized-pseudo-elements", "deprioritize-background-fetches", "efficient-background-processing", "webmcp", "agentic-forms", "agentic-javascript-tools", "language-model", "summarizer" ], "artifacts": [ { "type": "other", "path": "evidence/buttons.json", "caption": "buttons", "findingIds": [] }, { "type": "other", "path": "evidence/cookies.json", "caption": "cookies", "findingIds": [ "F-016", "F-018" ] }, { "type": "screenshot", "path": "evidence/desktop.png", "caption": "desktop", "findingIds": [ "F-001" ] }, { "type": "screenshot", "path": "evidence/discoverability-crawler.png", "caption": "discoverability crawler", "findingIds": [ "F-019" ] }, { "type": "screenshot", "path": "evidence/discoverability-rendered.png", "caption": "discoverability rendered", "findingIds": [ "F-019" ] }, { "type": "discoverability", "path": "evidence/discoverability.json", "caption": "discoverability", "findingIds": [ "F-019", "F-025" ] }, { "type": "dom", "path": "evidence/dom.json", "caption": "dom", "findingIds": [] }, { "type": "other", "path": "evidence/headers.json", "caption": "headers", "findingIds": [ "F-016", "F-018" ] }, { "type": "heap", "path": "evidence/heap-after-scroll.json", "caption": "heap after scroll", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-baseline.json", "caption": "heap baseline", "findingIds": [] }, { "type": "heap", "path": "evidence/heap-post.json", "caption": "heap post", "findingIds": [] }, { "type": "screenshot", "path": "evidence/home-dark.png", "caption": "home dark", "condition": "prefers-color-scheme: dark", "findingIds": [ "F-001" ] }, { "type": "screenshot", "path": "evidence/home-es.png", "caption": "home es", "findingIds": [ "F-020" ] }, { "type": "screenshot", "path": "evidence/home-forced-colors.png", "caption": "home forced colors", "condition": "forced-colors: active", "findingIds": [] }, { "type": "other", "path": "evidence/home-images.json", "caption": "home images", "findingIds": [ "F-009", "F-012", "F-022" ] }, { "type": "layout", "path": "evidence/home-layout-mobile.json", "caption": "home layout mobile", "condition": "viewport: 360x800", "findingIds": [ "F-003", "F-004", "F-011" ] }, { "type": "screenshot", "path": "evidence/home-mobile.png", "caption": "home mobile", "condition": "viewport: 360x800", "findingIds": [ "F-004", "F-011" ] }, { "type": "other", "path": "evidence/home-probe.json", "caption": "home probe", "findingIds": [ "F-002", "F-003", "F-005", "F-015", "F-020", "F-025" ] }, { "type": "har-summary", "path": "evidence/home-summary.json", "caption": "home summary", "findingIds": [ "F-007", "F-017", "F-022", "F-023", "F-024" ] }, { "type": "trace-summary", "path": "evidence/home-trace-summary.json", "caption": "home trace summary", "findingIds": [ "F-006" ] }, { "type": "trace", "path": "evidence/home-trace.json", "caption": "home trace", "findingIds": [ "F-006" ] }, { "type": "har", "path": "evidence/home.har", "caption": "home", "findingIds": [ "F-007", "F-017", "F-023" ] }, { "type": "other", "path": "evidence/i18n-probe.json", "caption": "i18n probe", "findingIds": [ "F-020" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-home.json", "caption": "lighthouse home", "findingIds": [ "F-006", "F-008", "F-009", "F-012", "F-013" ] }, { "type": "lighthouse", "path": "evidence/lighthouse-signin.json", "caption": "lighthouse signin", "findingIds": [ "F-005", "F-009", "F-010", "F-013", "F-014", "F-021" ] }, { "type": "other", "path": "evidence/memory-metrics.json", "caption": "memory metrics", "findingIds": [] }, { "type": "other", "path": "evidence/menu-elements.json", "caption": "menu elements", "findingIds": [ "F-010" ] }, { "type": "screenshot", "path": "evidence/mobile-menu-open.png", "caption": "mobile menu open", "condition": "viewport: 360x800", "findingIds": [] }, { "type": "other", "path": "evidence/recon.json", "caption": "recon", "findingIds": [ "F-014", "F-015" ] }, { "type": "other", "path": "evidence/reduced-motion-probe.json", "caption": "reduced motion probe", "findingIds": [] }, { "type": "other", "path": "evidence/resource-dom-confirmation.json", "caption": "resource dom confirmation", "findingIds": [ "F-007", "F-008", "F-024" ] }, { "type": "other", "path": "evidence/robots.txt", "caption": "robots", "findingIds": [] }, { "type": "other", "path": "evidence/secrets.json", "caption": "secrets", "findingIds": [] }, { "type": "screenshot", "path": "evidence/signin-discoverability-crawler.png", "caption": "signin discoverability crawler", "findingIds": [] }, { "type": "screenshot", "path": "evidence/signin-discoverability-rendered.png", "caption": "signin discoverability rendered", "findingIds": [] }, { "type": "discoverability", "path": "evidence/signin-discoverability.json", "caption": "signin discoverability", "findingIds": [] }, { "type": "dom", "path": "evidence/signin-dom.json", "caption": "signin dom", "findingIds": [] }, { "type": "screenshot", "path": "evidence/signin-error.png", "caption": "signin error", "findingIds": [] }, { "type": "layout", "path": "evidence/signin-layout-mobile.json", "caption": "signin layout mobile", "condition": "viewport: 360x800", "findingIds": [ "F-004", "F-011" ] }, { "type": "other", "path": "evidence/signin-probe.json", "caption": "signin probe", "findingIds": [] }, { "type": "other", "path": "evidence/signin-validation.json", "caption": "signin validation", "findingIds": [ "F-002" ] }, { "type": "screenshot", "path": "evidence/signin.png", "caption": "signin", "findingIds": [ "F-010", "F-021" ] }, { "type": "screenshot", "path": "evidence/signup.png", "caption": "signup", "findingIds": [] }, { "type": "other", "path": "evidence/sitemap.xml", "caption": "sitemap", "findingIds": [] }, { "type": "other", "path": "evidence/trackers.json", "caption": "trackers", "findingIds": [ "F-017", "F-023", "F-024" ] } ], "config": { "loaded": false }, "coverage": { "catalogVersion": "modern-web-guidance@0.0.172", "catalogChecksum": "sha256:78ccfdb2d483f4c57d9dafed80fd86c6265585a56457c8dcfddc254b80fb44d7", "expected": 58, "recorded": 58, "judged": 58, "blocked": 0, "notRun": 0, "missing": 0, "unknown": 0, "duplicates": 0, "complete": true }, "checkOutcomes": [ { "principleId": "respect-user-preferences", "checkId": "respects-color-scheme", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The dark-emulated screenshot is pixel-identical to the light capture and the probe reports color-scheme: normal with no prefers-color-scheme or light-dark() CSS.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-dark.png", "evidence/desktop.png" ], "findingIds": [ "F-001" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-reduced-motion", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Reduced-motion emulation matched successfully and the page reported zero active animations; no auto-advance or nonessential motion was present.", "pathIds": [ "home" ], "artifacts": [ "evidence/reduced-motion-probe.json" ] }, { "principleId": "respect-user-preferences", "checkId": "respects-contrast", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The forced-colors screenshot preserves readable text, visible primary controls, and focus/control outlines throughout the first two sections.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-forced-colors.png" ] }, { "principleId": "implement-natural-interactions", "checkId": "view-transitions", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The live CSS probe found no view-transition declarations; the covered route changes and sign-in validation swap state without a View Transition.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/signin-validation.json" ], "findingIds": [ "F-002" ] }, { "principleId": "implement-natural-interactions", "checkId": "scroll-driven-animations", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "No scroll-linked animation, parallax, scrollytelling, carousel, or reveal behavior exists on the covered paths.", "reason": "No scroll-linked animation, parallax, scrollytelling, carousel, or reveal behavior exists on the covered paths.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "implement-natural-interactions", "checkId": "physical-gestures", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "No swipe, pull, drag, scroll-snap carousel, or other gesture-driven component exists on the covered paths.", "reason": "No swipe, pull, drag, scroll-snap carousel, or other gesture-driven component exists on the covered paths.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "provide-guided-navigation", "checkId": "scroll-state-aware-chrome", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The landing page is over 4,200 CSS px tall, but the CSS probe found no scroll-state query, scroll timeline, or progress treatment for navigation chrome.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/home-probe.json" ], "findingIds": [ "F-003" ] }, { "principleId": "provide-guided-navigation", "checkId": "anchored-positioning", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "No tooltip, popover, or viewport-edge floating menu was present in the covered public, sign-in, or onboarding states.", "reason": "No tooltip, popover, or viewport-edge floating menu was present in the covered public, sign-in, or onboarding states.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "provide-guided-navigation", "checkId": "directs-attention", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Desktop, mobile, and signup screenshots show a clear heading hierarchy, strongly differentiated primary action, and labeled navigation destinations.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png", "evidence/signup.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "no-intrusive-interruptions", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Fresh-load screenshots on all four paths show no interstitial, consent wall, or overlay obscuring core content.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png", "evidence/signin.png", "evidence/signup.png" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "semantic-dismissible-primitives", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "No modal dialog, disclosure, picker, or transient popover was present in the covered states.", "reason": "No modal dialog, disclosure, picker, or transient popover was present in the covered states.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "maximize-content-reduce-noise", "checkId": "reduced-chrome", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The public first viewport prioritizes the seller proposition, primary CTA, and supporting image with restrained navigation chrome.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "responsive-no-horizontal-scroll", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "At a requested 360x800 viewport, layout reports innerWidth 1000 on home and 980 on sign-in, hasViewportMeta false, and Chrome scales the desktop layout to about 0.36, shrinking text and controls.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json", "evidence/signin-layout-mobile.json" ], "findingIds": [ "F-004" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "component-level-responsiveness", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "At a requested 360x800 viewport, layout reports innerWidth 1000 on home and 980 on sign-in, hasViewportMeta false, and Chrome scales the desktop layout to about 0.36, shrinking text and controls.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json", "evidence/signin-layout-mobile.json" ], "findingIds": [ "F-004" ] }, { "principleId": "adapt-to-the-form-factor", "checkId": "input-modality-aware", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The live probe found visible links only 14–21 CSS px high, and Lighthouse sign-in reports seven target-size failures.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-signin.json" ], "findingIds": [ "F-005" ] }, { "principleId": "support-core-task-success", "checkId": "clear-purpose-and-primary-action", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The H1 states “Create an Amazon selling account” and prominent Sign up and Log in actions are visible without scrolling.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png" ] }, { "principleId": "support-core-task-success", "checkId": "primary-flow-completion", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The audited public entry routes predictably to distinct sign-in and start-selling destinations; the credential boundary is expected and no dead end appeared before it.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin.png", "evidence/signup.png" ] }, { "principleId": "support-core-task-success", "checkId": "clear-system-state-and-recovery", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Empty sign-in submission produces explicit alert text, returns focus to ap_email, and offers password/passkey recovery alternatives.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin-validation.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "good-core-web-vitals", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Mobile Lighthouse measured LCP 9.2 s, FCP 4.3 s, Speed Index 7.4 s, and TTI 14.5 s; the independent trace measured LCP 3.27 s and FCP 3.25 s with low TBT, confirming network/LCP rather than sustained main-thread blocking as the main problem.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "findingIds": [ "F-006" ] }, { "principleId": "be-fast-and-stable", "checkId": "visual-stability", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The mobile layout observer measured CLS 0.022 and Lighthouse measured CLS 0.011, both in the good range.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/lighthouse-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-main-thread", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Trace evidence measured one 74.7 ms long task and 24.7 ms TBT; Lighthouse measured 90 ms TBT, within a good interaction budget.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-trace-summary.json", "evidence/lighthouse-home.json" ] }, { "principleId": "be-fast-and-stable", "checkId": "efficient-resource-delivery", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The HAR records 123 requests and 3.36 MB transferred, including five parser-inserted stylesheets and 1.37 MB across 15 fonts; DOM confirmation shows all five active stylesheets, while most scripts are async but three body scripts are synchronous.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/resource-dom-confirmation.json" ], "findingIds": [ "F-007" ] }, { "principleId": "be-fast-and-stable", "checkId": "trim-unused-and-duplicate-code", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse estimates 279 KiB unused JavaScript and 136 KiB unused CSS, while the DOM loads duplicate aos.js and assets-Sell.js URLs in both async head and synchronous body contexts.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/resource-dom-confirmation.json" ], "findingIds": [ "F-008" ] }, { "principleId": "be-inclusive", "checkId": "names-roles-labels", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse reports 43 homepage images without alt text and seven role/ARIA mismatches; the sign-in audit adds an unnamed link and invalid ARIA value. The image primitive counted 93 img elements without alt, including many decorative icons.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/lighthouse-signin.json", "evidence/home-images.json" ], "findingIds": [ "F-009" ] }, { "principleId": "be-inclusive", "checkId": "sufficient-contrast", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Lighthouse color-contrast passed and forced-colors evidence keeps foreground and controls distinguishable.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-forced-colors.png" ] }, { "principleId": "be-inclusive", "checkId": "structure-and-focus", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse reports no main landmark on sign-in. On the landing page the hamburger is a span inside a focusable header rather than a named button, even though visible focus itself is present.", "pathIds": [ "signin" ], "artifacts": [ "evidence/lighthouse-signin.json", "evidence/menu-elements.json", "evidence/signin.png" ], "findingIds": [ "F-010" ] }, { "principleId": "be-inclusive", "checkId": "legible-text", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Desktop and localized screenshots show strong typographic hierarchy, readable line lengths, and no clipping in the sampled content.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png", "evidence/home-es.png" ] }, { "principleId": "be-inclusive", "checkId": "zoom-reflow-targets-and-media", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Both representative sellercentral.com templates omit a viewport declaration, causing 980–1000 CSS px layouts to be downscaled into a 360 px device viewport; Lighthouse also reports seven sign-in touch-target failures.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-layout-mobile.json", "evidence/signin-layout-mobile.json", "evidence/home-mobile.png" ], "findingIds": [ "F-011" ] }, { "principleId": "follow-best-practices", "checkId": "no-console-errors", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Lighthouse reported no browser console errors on the public landing page.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json" ] }, { "principleId": "follow-best-practices", "checkId": "sound-document-and-assets", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The image primitive reports 99 of 100 images without width/height attributes and 46 oversized images. Lighthouse reports one deprecated API warning.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/lighthouse-home.json" ], "findingIds": [ "F-012" ] }, { "principleId": "follow-best-practices", "checkId": "browser-platform-hygiene", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse reports four BFCache failure reasons on the landing page and two on sign-in, increasing repeat-navigation cost.", "pathIds": [ "home" ], "artifacts": [ "evidence/lighthouse-home.json", "evidence/lighthouse-signin.json" ], "findingIds": [ "F-013" ] }, { "principleId": "be-discoverable", "checkId": "title-and-description", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse SEO passes the public homepage title/description but reports that the sign-in document has no meta description.", "pathIds": [ "signin" ], "artifacts": [ "evidence/lighthouse-signin.json", "evidence/recon.json" ], "findingIds": [ "F-014" ] }, { "principleId": "be-discoverable", "checkId": "crawlable-and-mobile-friendly", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "At a requested 360x800 viewport, layout reports innerWidth 1000 on home and 980 on sign-in, hasViewportMeta false, and Chrome scales the desktop layout to about 0.36, shrinking text and controls.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json", "evidence/signin-layout-mobile.json" ], "findingIds": [ "F-004" ] }, { "principleId": "be-discoverable", "checkId": "canonical-and-indexing-signals", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The public page returns 200, declares canonical https://sellercentral.amazon.com/, robots allows indexing, and robots.txt/sitemap.xml were successfully retrieved.", "pathIds": [ "home" ], "artifacts": [ "evidence/recon.json", "evidence/robots.txt", "evidence/sitemap.xml" ] }, { "principleId": "be-discoverable", "checkId": "structured-and-shareable-metadata", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The metadata probe found Open Graph and Twitter tags but zero JSON-LD or microdata blocks on a public Amazon Seller Central organization/service page.", "pathIds": [ "home" ], "artifacts": [ "evidence/recon.json", "evidence/home-probe.json" ], "findingIds": [ "F-015" ] }, { "principleId": "be-private-and-secure", "checkId": "secure-transport-and-headers", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "HTTPS and HSTS are present, but the header probe found no CSP, Referrer-Policy, or Permissions-Policy. Cookie evidence reports 14 cookies without Secure and auth-like session-id/session-token cookies readable by script and using SameSite=None.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F-016" ] }, { "principleId": "be-private-and-secure", "checkId": "data-minimisation-and-third-parties", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The tracker probe records 15 third-party origins; the HAR attributes 118 of 123 requests and 3.21 of 3.36 MB to non-sellercentral origins, including Adobe/Demdex and Everest redirects.", "pathIds": [ "home" ], "artifacts": [ "evidence/trackers.json", "evidence/home-summary.json", "evidence/home.har" ], "findingIds": [ "F-017" ] }, { "principleId": "be-private-and-secure", "checkId": "in-context-permissions-and-modern-auth", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "No permission prompt appeared on load; the sign-in validation exposes passkey handling and alternative password recovery, showing modern authentication support.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin-validation.json", "evidence/signin.png" ] }, { "principleId": "be-private-and-secure", "checkId": "defensive-browser-policies", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "HSTS and X-Frame-Options are present, but no CSP/frame-ancestors, Referrer-Policy, or Permissions-Policy was observed; the cookies evidence also shows broad SameSite=None use.", "pathIds": [ "home" ], "artifacts": [ "evidence/headers.json", "evidence/cookies.json" ], "findingIds": [ "F-018" ] }, { "principleId": "be-resilient", "checkId": "progressive-enhancement", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Discoverability measured only 5% raw-to-rendered word coverage and classified the marketing page as a JavaScript shell; the raw HTML has title/description but no H1, while the rendered page has 284 content tokens.", "pathIds": [ "home" ], "artifacts": [ "evidence/discoverability.json", "evidence/discoverability-rendered.png", "evidence/discoverability-crawler.png" ], "findingIds": [ "F-019" ] }, { "principleId": "be-resilient", "checkId": "resilient-runtime-behaviour", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Repeated full-page scrolling kept DOM nodes stable at 1,410, screenshots showed no clipped initial controls, and form validation retained focus/context.", "pathIds": [ "home" ], "artifacts": [ "evidence/memory-metrics.json", "evidence/signin-validation.json" ] }, { "principleId": "be-resilient", "checkId": "offline-and-installable", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "Seller authentication and account creation are intrinsically online, and the public marketing entry is not presented as an installable app.", "reason": "Seller authentication and account creation are intrinsically online, and the public marketing entry is not presented as an installable app.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "be-resilient", "checkId": "network-and-http-failure-states", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The exercised authentication failure state provides explicit, actionable messages, retries/alternatives, and focus recovery rather than a blank or stuck state.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin-validation.json" ] }, { "principleId": "be-internationalised", "checkId": "lang-dir-and-logical-properties", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The Spanish variant correctly sets lang=es-ES and renders translated content, but the CSS probe found no logical inline/block properties, reducing resilience for RTL/writing-mode expansion.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-es.png", "evidence/i18n-probe.json", "evidence/home-probe.json" ], "findingIds": [ "F-020" ] }, { "principleId": "be-internationalised", "checkId": "locale-aware-data", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The Spanish locale renders translated navigation/content and locale-appropriate “50 000 $” formatting with lang=es-ES.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-es.png", "evidence/i18n-probe.json" ] }, { "principleId": "be-internationalised", "checkId": "time-zone-correctness", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "The covered public, sign-in, and onboarding surfaces expose no dates, events, schedules, or time-zone-sensitive data.", "reason": "The covered public, sign-in, and onboarding surfaces expose no dates, events, schedules, or time-zone-sensitive data.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "be-trustworthy", "checkId": "no-dark-patterns", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Covered screenshots show clearly labeled sign-up/login actions, linked conditions/privacy, visible incentive qualifiers, and no confirmshaming or consent wall.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png", "evidence/signup.png" ] }, { "principleId": "be-trustworthy", "checkId": "humane-error-handling", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Empty sign-in submission announces clear errors and restores focus to the email field; the message asks for correction without blame.", "pathIds": [ "home" ], "artifacts": [ "evidence/signin-validation.json" ] }, { "principleId": "be-trustworthy", "checkId": "trustworthy-input-assistance", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "Lighthouse reports an autocomplete-valid failure on the authentication form, despite this being a high-value sign-in surface.", "pathIds": [ "signin" ], "artifacts": [ "evidence/lighthouse-signin.json", "evidence/signin.png" ], "findingIds": [ "F-021" ] }, { "principleId": "be-trustworthy", "checkId": "safe-commercial-and-account-flows", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "The covered onboarding landing clearly distinguishes sign up/log in, shows the incentive qualifier, and provides Pricing navigation before the credential boundary.", "pathIds": [ "home" ], "artifacts": [ "evidence/desktop.png", "evidence/signup.png" ] }, { "principleId": "be-sustainable", "checkId": "optimised-assets", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The image audit reports 46 oversized images, seven legacy-format images, five without responsive sources, and 99 without dimensions; images transfer 1.07 MB on the initial load.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-images.json", "evidence/home-summary.json" ], "findingIds": [ "F-022" ] }, { "principleId": "be-sustainable", "checkId": "no-wasteful-work", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The initial load sends analytics requests to Adobe/Demdex, Everest and Amazon telemetry endpoints, while the DOM includes duplicate aos.js and assets-Sell.js loads; this work occurs before a seller chooses an action.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/resource-dom-confirmation.json", "evidence/trackers.json" ], "findingIds": [ "F-024" ] }, { "principleId": "be-sustainable", "checkId": "third-party-and-media-budget", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The 3.36 MB load includes 1.37 MB of fonts, 1.07 MB of images, and 3.21 MB attributed to third-party origins; 15 separate fonts and 118 third-party requests dominate the budget.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/trackers.json" ], "findingIds": [ "F-023" ] }, { "principleId": "be-agent-ready", "checkId": "structured-agent-capabilities", "status": "issues", "confidence": "high", "method": "Direct visual/objective evidence gathered under the planned representative paths and conditions.", "evidence": "The live probe found no WebMCP or agentic tool registration, and the public content is only 5% present in raw HTML, leaving agents to infer actions from a JS-heavy visual surface.", "pathIds": [ "home" ], "artifacts": [ "evidence/home-probe.json", "evidence/discoverability.json" ], "findingIds": [ "F-025" ] }, { "principleId": "be-agent-ready", "checkId": "on-device-inference", "status": "not-applicable", "confidence": "high", "method": "Recon of DOM, screenshots, links, and representative flows for the feature or content targeted by this check.", "evidence": "The covered marketing and authentication tasks do not contain a summarisation or generative task for which on-device inference would improve the experience.", "reason": "The covered marketing and authentication tasks do not contain a summarisation or generative task for which on-device inference would improve the experience.", "pathIds": [ "home", "signin", "signup" ] }, { "principleId": "be-memory-efficient", "checkId": "no-leak-under-repeated-interaction", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "After ten representative full-page scroll cycles, DOM nodes remained exactly 1,410; used JS heap rose only about 0.93 MB during the active sample and a post-interaction heap was within 0.7% of baseline size.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-after-scroll.json", "evidence/memory-metrics.json" ] }, { "principleId": "be-memory-efficient", "checkId": "bounded-footprint", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Heap summaries measured about 23.8–24.0 MB self size and roughly 358k heap nodes, proportionate to the rendered marketing page despite its network weight.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json" ] }, { "principleId": "be-memory-efficient", "checkId": "no-detached-dom-or-unbounded-listeners", "status": "pass", "confidence": "high", "method": "Direct visual/objective evidence across the representative path set.", "evidence": "Ten scroll cycles left DOM node count unchanged; closure count changed only 48 and no Detached* constructor appeared among retained top constructors.", "pathIds": [ "home" ], "artifacts": [ "evidence/heap-baseline.json", "evidence/heap-after-scroll.json", "evidence/memory-metrics.json" ] } ], "principleOutcomes": [ { "principleId": "respect-user-preferences", "expectation": "default", "status": "issues", "findingIds": [ "F-001" ] }, { "principleId": "implement-natural-interactions", "expectation": "default", "status": "issues", "findingIds": [ "F-002" ] }, { "principleId": "provide-guided-navigation", "expectation": "default", "status": "issues", "findingIds": [ "F-003" ] }, { "principleId": "maximize-content-reduce-noise", "expectation": "default", "status": "pass" }, { "principleId": "adapt-to-the-form-factor", "expectation": "default", "status": "issues", "findingIds": [ "F-004", "F-005" ] }, { "principleId": "support-core-task-success", "expectation": "default", "status": "pass" }, { "principleId": "be-fast-and-stable", "expectation": "default", "status": "issues", "findingIds": [ "F-006", "F-007", "F-008" ] }, { "principleId": "be-inclusive", "expectation": "default", "status": "issues", "findingIds": [ "F-009", "F-010", "F-011" ] }, { "principleId": "follow-best-practices", "expectation": "default", "status": "issues", "findingIds": [ "F-012", "F-013" ] }, { "principleId": "be-discoverable", "expectation": "default", "status": "issues", "findingIds": [ "F-014", "F-004", "F-015" ] }, { "principleId": "be-private-and-secure", "expectation": "default", "status": "issues", "findingIds": [ "F-016", "F-017", "F-018" ] }, { "principleId": "be-resilient", "expectation": "contextual", "status": "issues", "findingIds": [ "F-019" ] }, { "principleId": "be-internationalised", "expectation": "contextual", "status": "issues", "findingIds": [ "F-020" ] }, { "principleId": "be-trustworthy", "expectation": "default", "status": "issues", "findingIds": [ "F-021" ] }, { "principleId": "be-sustainable", "expectation": "contextual", "status": "issues", "findingIds": [ "F-022", "F-024", "F-023" ] }, { "principleId": "be-agent-ready", "expectation": "contextual", "status": "issues", "findingIds": [ "F-025" ] }, { "principleId": "be-memory-efficient", "expectation": "default", "status": "pass" } ], "paths": [ { "id": "home", "description": "Public Seller Central landing page, representing the main marketing template and entry to seller onboarding.", "url": "https://sellercentral.amazon.com/", "conditions": [ "desktop 1440x1000", "mobile 360x800", "prefers-color-scheme: dark", "prefers-reduced-motion: reduce", "forced-colors: active", "no-JavaScript crawler" ], "result": "issues" }, { "id": "signin", "description": "Seller sign-in form, representing authentication, form semantics, validation, and recovery.", "url": "https://sellercentral.amazon.com/signin", "conditions": [ "desktop", "mobile 360x800", "empty-form submission", "no-JavaScript crawler" ], "result": "issues" }, { "id": "signup", "description": "Start-selling destination reached from registration, representing the onboarding decision and signup landing surface.", "url": "https://sellercentral.amazon.com/gp/on-board/workflow/Registration/login.html", "conditions": [ "desktop 1440x1000" ], "result": "pass" }, { "id": "spanish", "description": "Spanish locale variant, representing localization and translated layout.", "url": "https://sellercentral.amazon.com/?mons_sel_locale=es_ES", "conditions": [ "desktop 1440x1000", "locale es-ES" ], "result": "pass" } ], "findings": [ { "id": "F-001", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "respect-user-preferences", "principleCheckId": "respects-color-scheme", "guidanceId": "dark-mode", "guidanceCategory": "user-experience", "severity": "medium", "confidence": "high", "summary": "The public and sign-in surfaces ignore the user’s dark-mode preference.", "evidence": "The dark-emulated screenshot is pixel-identical to the light capture and the probe reports color-scheme: normal with no prefers-color-scheme or light-dark() CSS.", "artifacts": [ "evidence/home-dark.png", "evidence/desktop.png" ], "suggestedFix": "Add color-scheme: light dark and preference-driven surface, text, border, and image treatments using prefers-color-scheme or light-dark().", "effort": "medium" }, { "id": "F-002", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "implement-natural-interactions", "principleCheckId": "view-transitions", "guidanceId": "same-document-transitions", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Navigation and state changes have no transition treatment.", "evidence": "The live CSS probe found no view-transition declarations; the covered route changes and sign-in validation swap state without a View Transition.", "artifacts": [ "evidence/home-probe.json", "evidence/signin-validation.json" ], "suggestedFix": "Use same-document View Transitions for meaningful state changes and cross-document transitions for eligible marketing navigation, while respecting reduced motion.", "effort": "medium" }, { "id": "F-003", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "provide-guided-navigation", "principleCheckId": "scroll-state-aware-chrome", "guidanceId": "shrinking-header-on-scroll", "guidanceCategory": "user-experience", "severity": "low", "confidence": "high", "summary": "Long-page navigation does not respond to scroll state.", "evidence": "The landing page is over 4,200 CSS px tall, but the CSS probe found no scroll-state query, scroll timeline, or progress treatment for navigation chrome.", "artifacts": [ "evidence/home-layout-mobile.json", "evidence/home-probe.json" ], "suggestedFix": "Use scroll-state container queries or a lightweight progress affordance so navigation responds to long-page position.", "effort": "small" }, { "id": "F-004", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "responsive-no-horizontal-scroll", "guidanceId": "fluid-scaling", "guidanceCategory": "user-experience", "severity": "high", "confidence": "high", "summary": "The pages omit the viewport meta tag and render a desktop-sized CSS viewport on phones.", "evidence": "At a requested 360x800 viewport, layout reports innerWidth 1000 on home and 980 on sign-in, hasViewportMeta false, and Chrome scales the desktop layout to about 0.36, shrinking text and controls.", "artifacts": [ "evidence/home-mobile.png", "evidence/home-layout-mobile.json", "evidence/signin-layout-mobile.json" ], "suggestedFix": "Add and retest layouts at true mobile CSS widths with intrinsic/fluid sizing.", "effort": "small" }, { "id": "F-005", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "adapt-to-the-form-factor", "principleCheckId": "input-modality-aware", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "medium", "confidence": "high", "summary": "Several controls and links fall below comfortable touch-target dimensions.", "evidence": "The live probe found visible links only 14–21 CSS px high, and Lighthouse sign-in reports seven target-size failures.", "artifacts": [ "evidence/home-probe.json", "evidence/lighthouse-signin.json" ], "suggestedFix": "Give interactive targets at least a 24x24 CSS px area, preferably 44x44 for primary touch actions, with sufficient spacing and visible focus.", "effort": "small" }, { "id": "F-006", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "be-fast-and-stable", "principleCheckId": "good-core-web-vitals", "guidanceId": "performance", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "The public landing page loads too slowly for the primary path.", "evidence": "Mobile Lighthouse measured LCP 9.2 s, FCP 4.3 s, Speed Index 7.4 s, and TTI 14.5 s; the independent trace measured LCP 3.27 s and FCP 3.25 s with low TBT, confirming network/LCP rather than sustained main-thread blocking as the main problem.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/home-trace-summary.json", "evidence/home-trace.json" ], "suggestedFix": "Prioritize the LCP image and critical CSS, reduce the font and image waterfall, and defer nonessential page sections and telemetry.", "effort": "large" }, { "id": "F-007", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "be-fast-and-stable", "principleCheckId": "efficient-resource-delivery", "guidanceId": "optimize-image-priority", "guidanceCategory": "performance", "severity": "high", "confidence": "high", "summary": "Critical delivery is delayed by a large render-blocking and font/image waterfall.", "evidence": "The HAR records 123 requests and 3.36 MB transferred, including five parser-inserted stylesheets and 1.37 MB across 15 fonts; DOM confirmation shows all five active stylesheets, while most scripts are async but three body scripts are synchronous.", "artifacts": [ "evidence/home-summary.json", "evidence/home.har", "evidence/resource-dom-confirmation.json" ], "suggestedFix": "Inline or consolidate critical CSS, defer noncritical styles, subset and reduce fonts, and explicitly prioritize only the LCP asset.", "effort": "large" }, { "id": "F-008", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "be-fast-and-stable", "principleCheckId": "trim-unused-and-duplicate-code", "guidanceId": "identify-heavy-scripts", "guidanceCategory": "performance", "severity": "medium", "confidence": "high", "summary": "The landing page ships substantial unused CSS and JavaScript.", "evidence": "Lighthouse estimates 279 KiB unused JavaScript and 136 KiB unused CSS, while the DOM loads duplicate aos.js and assets-Sell.js URLs in both async head and synchronous body contexts.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/resource-dom-confirmation.json" ], "suggestedFix": "Remove duplicate script inclusion, split route/component bundles, and load optional marketing and analytics code conditionally.", "effort": "medium" }, { "id": "F-009", "pathId": "home", "url": "https://sellercentral.amazon.com/", "principleId": "be-inclusive", "principleCheckId": "names-roles-labels", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "high", "confidence": "high", "summary": "Image and ARIA semantics are incomplete on primary surfaces.", "evidence": "Lighthouse reports 43 homepage images without alt text and seven role/ARIA mismatches; the sign-in audit adds an unnamed link and invalid ARIA value. The image primitive counted 93 img elements without alt, including many decorative icons.", "artifacts": [ "evidence/lighthouse-home.json", "evidence/lighthouse-signin.json", "evidence/home-images.json" ], "suggestedFix": "Add meaningful alt text where images convey content, empty alt for decoration, and correct the invalid role/ARIA pairings and unnamed controls.", "effort": "medium" }, { "id": "F-010", "pathId": "signin", "url": "https://sellercentral.amazon.com/signin", "principleId": "be-inclusive", "principleCheckId": "structure-and-focus", "guidanceId": "accessibility", "guidanceCategory": "accessibility", "severity": "medium", "confidence": "high", "summary": "The sign-in template lacks a main landmark and the mobile menu trigger is not a semantic control.", "evidence": "Lighthouse reports no main landmark on sign-in. On the landing page the hamburger is a span inside a focusable header rather than a named button, even though visible focus itself is present.", "artifacts": [ "evidence/lighthouse-signin.json", "evidence/menu-elements.json", "evidence/signin.png" ], "suggestedFix": "Wrap the sign-in content in
and implement the menu trigger as a named