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Chrome DevTools Protocol 155.0.8059.39 · 推导

• Derived by counting computed styles of 54 visible elements in the main document; counts are element occurrences, not CSS declarations.
• Colors are normalised to sRGB hex; opacity inherited from ancestors is not applied.
• Spacing counts used margin, padding and gap values; auto margins appear as their resolved px size.
• Values reflect the page at rest at capture time; hover and focus states, scroll positions and animations are not reflected in this record.
• 1 element(s) with percentage border radii were not counted in radii.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Single viewport 1440x900 CSS px at device scale factor 1; other viewports are not reflected in this record (measure.responsive records them when that stage runs).
• Values reflect the page at rest at capture time; hover and focus states, scroll positions and animations are not reflected in this record.
• Main document only; iframe contents and ::before/::after pseudo-elements were not measured.
• Boxes are layout bounds in CSS px relative to the top-left corner of the document.
• Element roles come from documented deterministic heuristics (tag, ARIA role, name, class and alt hints), not from page semantics.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• One snapshot at the desktop width after the page loaded; content that appears on interaction or scroll is not reflected.
• Landmark and repeated-subtree signatures are the first 16 hex characters of the SHA-256 of a tag-and-class skeleton three levels deep (generated class-name hashes removed); equal signatures mean equal skeletons, not equal content.
• License statements are sentences of the visible text that match a license pattern; they are clues, not license determinations.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• One snapshot at the desktop width after the page loaded; content that appears on interaction or scroll is not reflected.
• Landmark and repeated-subtree signatures are the first 16 hex characters of the SHA-256 of a tag-and-class skeleton three levels deep (generated class-name hashes removed); equal signatures mean equal skeletons, not equal content.
• License statements are sentences of the visible text that match a license pattern; they are clues, not license determinations.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• One snapshot at the desktop width after the page loaded; content that appears on interaction or scroll is not reflected.
• Landmark and repeated-subtree signatures are the first 16 hex characters of the SHA-256 of a tag-and-class skeleton three levels deep (generated class-name hashes removed); equal signatures mean equal skeletons, not equal content.
• License statements are sentences of the visible text that match a license pattern; they are clues, not license determinations.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• One snapshot at the desktop width after the page loaded; content that appears on interaction or scroll is not reflected.
• Landmark and repeated-subtree signatures are the first 16 hex characters of the SHA-256 of a tag-and-class skeleton three levels deep (generated class-name hashes removed); equal signatures mean equal skeletons, not equal content.
• License statements are sentences of the visible text that match a license pattern; they are clues, not license determinations.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• One snapshot at the desktop width after the page loaded; content that appears on interaction or scroll is not reflected.
• Landmark and repeated-subtree signatures are the first 16 hex characters of the SHA-256 of a tag-and-class skeleton three levels deep (generated class-name hashes removed); equal signatures mean equal skeletons, not equal content.
• License statements are sentences of the visible text that match a license pattern; they are clues, not license determinations.

Chrome DevTools Protocol 155.0.8059.39 · 推导

• Single viewport 1440x900 CSS px at device scale factor 1; other viewports are not reflected in this record (measure.responsive records them when that stage runs).
• Derived from the element boxes in the cited measure.computed_style record: for each key element, the nearest other key element entirely below (axis y) or entirely to the right (axis x) with overlapping extent.
• Only gaps between listed key elements; spacing to unlisted elements and nested (ancestor/descendant) pairs is not included.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Single viewport 1440x900 CSS px at device scale factor 1; other viewports are not reflected in this record (measure.responsive records them when that stage runs).
• Values reflect the page at rest at capture time; hover and focus states, scroll positions and animations are not reflected in this record.
• Fixed and sticky elements appear at their initial scroll position; content that loads on scroll was not triggered.

REA Chrome DevTools Protocol observation provider 2 · 已观察

• Artifact identity is unavailable for this observation.
• The screenshot contains the visible viewport, including on-screen content.
• REA does not scroll, evaluate JavaScript, or capture beyond the current viewport.
• Browser host platform and architecture were not observed.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• The same document was laid out at each width without reloading; element boxes and styles at each width are observed, and an element absent at a width has no box.
• The narrow frame uses mobile layout (viewport meta) with the desktop user agent and without touch emulation, so it keeps a fine pointer that can hover; (hover: none) and (pointer: coarse) rules are not reflected, and sites that serve different HTML to mobile user agents may look different on phones.
• Flips were bisected with desktop probes (desktop layout) and record the 1 px boundary where the value changed; matching them to CSS width conditions is left to the report.
• Bisection covers display, layout box presence, flex-direction, grid track count and font-size of the tracked elements only.
• Width screenshots are JPEG, at most 8192 CSS px tall, rendered beyond the frame's own viewport without resizing it, so elements sized by viewport height keep the height the boxes describe.
• 2 bisected difference(s) changed continuously with the width (no single flip point) and are not listed as flips.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Boxes, styles and text are read from the browser; layers are merged, classified and named by the rules layers/3 (kinds, merged nodes and names are derived).

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Boxes, styles and text are read from the browser; layers are merged, classified and named by the rules layers/3 (kinds, merged nodes and names are derived).

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Boxes, styles and text are read from the browser; layers are merged, classified and named by the rules layers/3 (kinds, merged nodes and names are derived).

REA Chrome DevTools Protocol observation provider 2 · 已观察

• Artifact identity is unavailable for this observation.
• Observation starts when REA attaches; prior network and console activity is unavailable.
• Raw network headers, bodies, cookies, storage values, console objects, and WebSocket payloads are never retained; explicitly requested primitive console text is retained verbatim, while payload captures retain value-free shapes.
• Source maps are reported only as declarative URLs and are not fetched.
• URL-less scripts and console events without an allowed source URL are excluded because their origin cannot be proven.
• Browser host platform and architecture were not observed.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• States were forced with CSS.forcePseudoState (hover, focus, focus-visible); no pointer or keyboard events were sent, so states driven by JavaScript (mouseenter menus, focus handlers) are not reflected.
• Animations ran at 100x playback during the probes and the values were read 50 ms after each change; the playback rate was set back to 1 afterwards.
• Rules list only matched rules whose selector names the forced pseudo-class; inherited and user-agent rules are not listed.
• Element crops are taken only for elements fully inside the first screen and only for states that changed a property.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Scrolled with mouse-wheel events at the desktop width; scrolling inside inner containers and touch scrolling were not exercised.
• Pinned elements are the fixed and sticky elements of one snapshot taken before scrolling; viewportY lists their viewport y after each step where they had a box.
• domNodes is the browser's live node count (all frames, text nodes included); requests and animations are those that started during each step's settle time.
• Lazy images are counted from loading=lazy img elements and their src attribute; srcset candidates and CSS backgrounds are not matched.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Animations are those the browser started while the page was loaded, probed for hover and focus, scrolled and laid out at other widths; animations that never started during the visit are not listed.
• Measured with prefers-reduced-motion: no-preference.
• A transition is marked interrupted when its duration equals none of the computed transition-duration values seen for that property on its element (at rest, and in each forced hover and focus state for the elements probed) and is shorter than one of them: a reversed transition is shortened. Interrupted durations are not declared values.
• 4 transition(s) could not be compared with their element's computed transition-duration (the element was gone) and are not marked interrupted.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Only pages of the submitted page's origin are crawled; subdomains and other origins are listed as outbound and not visited.
• robots.txt is applied per RFC 9309 (group ageno, else *); the submitted page is always measured as the user's own single visit.
• Pages are loaded one after another in one tab with GET; addresses with a query, paths that look like they change state, non-HTML extensions and a second page of an already visited template are not loaded.
• robots.txt and sitemaps were requested 3 time(s), same-origin only and after the request guard; the request guard and egress proxy apply to page loads as well.

REA Chrome DevTools Protocol observation provider 2 · 已观察

• Artifact identity is unavailable for this observation.
• Static bundle findings are observations or bounded inferences; REA does not execute captured JavaScript.
• String-built routes and endpoints, encrypted configuration, and server-side behavior may remain unknown.
• Page-declared WebMCP metadata is untrusted and is never registered or invoked as an REA tool.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Single viewport 1440x900 CSS px at device scale factor 1; other viewports are not reflected in this record (measure.responsive records them when that stage runs).
• Headless Chrome with its own user agent plus the ageno token; sites may serve different content to automated browsers.
• Waited for the load event and at most 3000 ms of network quiet; content loaded later or on interaction is not reflected.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Matched against the ageno technology catalog (packages/measure techCatalog.ts, version in catalogVersion) using first-party response headers and cookie names, request hosts, script markers and the DOM of 5 page(s); headers and cookies of third-party origins are not attributed to the site.
• strength declared means the site states it itself (meta generator, server or x-powered-by header); unique_marker and pattern are clues, not confirmations.
• Script bodies were scanned in memory as they loaded (at most 1 MB each and 8 MB in total) and not kept; inline scripts only in their first 2048 characters.
• A technology the catalog does not list, or one that leaves none of its signals, is not reported.

Chrome DevTools Protocol 155.0.8059.39 · 已观察

• Requests the browser made for 5 page(s) from open_page on (load, probes, scrolling, crawl); requests made before the browser attached or by service workers are not included.
• Only shapes are kept (D-028): query parameter names, JSON field names and types of request and response bodies, header names (values only for server, x-powered-by and via) and cookie names; no values.
• Response bodies were read for fetch and XHR responses with a JSON media type up to 1 MB as soon as they finished; a body the browser had already dropped is marked evicted.
• First party means the document's host (without www.) or one of its subdomains; it is a naming rule, not an ownership check.