{
  "url": "https://service.smt.docomo.ne.jp",
  "auditedAt": "2026-07-21T13:21:00.000Z",
  "mode": "report",
  "status": "completed",
  "statusDetail": "Coverage-complete audit of the public root. The URL itself returned a rendered HTTP 404, so that error template is the only same-origin archetype available from the requested entry point.",
  "page": {
    "appType": "mpa",
    "framework": "none detected",
    "notes": "Server-rendered Japanese static error page. No script, form, app route, overlay, or same-origin navigation was exposed."
  },
  "evidenceUsed": [
    "screenshot",
    "DOM+computed styles",
    "layout metrics",
    "evaluate probes",
    "DevTools trace",
    "HAR",
    "security headers",
    "cookies",
    "trackers",
    "secrets scan",
    "image audit",
    "heap summary",
    "discoverability crawler comparison",
    "Lighthouse attempted (blocked by HTTP 404)",
    "Modern Web Guidance search/retrieve"
  ],
  "guidanceConsulted": [
    "dark-mode",
    "accessibility",
    "forms",
    "performance",
    "security",
    "fluid-scaling",
    "html",
    "translator"
  ],
  "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": "Dark-mode screenshot and computed-style comparison",
      "evidence": "Dark emulation leaves the body white and color-scheme normal.",
      "artifacts": [
        "evidence/dark.png",
        "evidence/dark-dom.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-002"
      ]
    },
    {
      "principleId": "respect-user-preferences",
      "checkId": "respects-reduced-motion",
      "status": "pass",
      "confidence": "high",
      "method": "Reduced-motion media emulation plus Web Animations probe",
      "evidence": "Reduced-motion emulation matched and document.getAnimations() returned zero animations.",
      "artifacts": [
        "evidence/reduced-motion.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "respect-user-preferences",
      "checkId": "respects-contrast",
      "status": "pass",
      "confidence": "high",
      "method": "Forced-colors and prefers-contrast screenshot review",
      "evidence": "Forced-colors/high-contrast screenshot keeps all error text and the recovery action visible.",
      "artifacts": [
        "evidence/high-contrast.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "implement-natural-interactions",
      "checkId": "view-transitions",
      "status": "pass",
      "confidence": "high",
      "method": "DOM interaction inventory and navigation semantics review",
      "evidence": "The document has no custom state swap or same-site route transition; its sole cross-origin navigation uses the platform’s native link behavior rather than a jarring scripted replacement.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "implement-natural-interactions",
      "checkId": "scroll-driven-animations",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The short static error document has no scroll-linked motion or scrollytelling surface.",
      "pathIds": [
        "root"
      ],
      "reason": "The short static error document has no scroll-linked motion or scrollytelling surface."
    },
    {
      "principleId": "implement-natural-interactions",
      "checkId": "physical-gestures",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The document exposes no gesture-driven component, carousel, swipe action, or disclosure.",
      "pathIds": [
        "root"
      ],
      "reason": "The document exposes no gesture-driven component, carousel, swipe action, or disclosure."
    },
    {
      "principleId": "provide-guided-navigation",
      "checkId": "scroll-state-aware-chrome",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The single short error state has no scroll-dependent chrome or multi-section navigation.",
      "pathIds": [
        "root"
      ],
      "reason": "The single short error state has no scroll-dependent chrome or multi-section navigation."
    },
    {
      "principleId": "provide-guided-navigation",
      "checkId": "anchored-positioning",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No tooltip, popover, menu, or other anchored overlay exists.",
      "pathIds": [
        "root"
      ],
      "reason": "No tooltip, popover, menu, or other anchored overlay exists."
    },
    {
      "principleId": "provide-guided-navigation",
      "checkId": "directs-attention",
      "status": "pass",
      "confidence": "high",
      "method": "Visual hierarchy and navigation-action review",
      "evidence": "The compact failure state has one underlined, button-shaped recovery action immediately after the explanation, with no competing controls or ambiguous focus destination.",
      "artifacts": [
        "evidence/home.png",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "maximize-content-reduce-noise",
      "checkId": "no-intrusive-interruptions",
      "status": "pass",
      "confidence": "high",
      "method": "Initial-load screenshot review at desktop and mobile widths",
      "evidence": "Initial desktop and mobile screenshots show no popup, banner, consent wall, or overlay obscuring content.",
      "artifacts": [
        "evidence/home.png",
        "evidence/mobile.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "maximize-content-reduce-noise",
      "checkId": "semantic-dismissible-primitives",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No overlay, disclosure, picker, or rich control exists on this error document.",
      "pathIds": [
        "root"
      ],
      "reason": "No overlay, disclosure, picker, or rich control exists on this error document."
    },
    {
      "principleId": "maximize-content-reduce-noise",
      "checkId": "reduced-chrome",
      "status": "pass",
      "confidence": "high",
      "method": "Visual hierarchy and viewport-occupancy review",
      "evidence": "The viewport contains only a compact error heading, explanation, one recovery action, and footer; no competing application chrome.",
      "artifacts": [
        "evidence/home.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "adapt-to-the-form-factor",
      "checkId": "responsive-no-horizontal-scroll",
      "status": "pass",
      "confidence": "high",
      "method": "Mobile screenshot and layout-metrics probe",
      "evidence": "At 360×800, layout reports scrollWidth=clientWidth=360, horizontalOverflowPx=0, CLS=0, and viewport meta present.",
      "artifacts": [
        "evidence/mobile.png",
        "evidence/mobile-layout.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "adapt-to-the-form-factor",
      "checkId": "component-level-responsiveness",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The page has no component reused in differently sized containers; a container-query adaptation cannot be meaningfully exercised.",
      "pathIds": [
        "root"
      ],
      "reason": "The page has no component reused in differently sized containers; a container-query adaptation cannot be meaningfully exercised."
    },
    {
      "principleId": "adapt-to-the-form-factor",
      "checkId": "input-modality-aware",
      "status": "issues",
      "confidence": "high",
      "method": "Programmatic focus/computed outline and target-rectangle probe",
      "evidence": "Keyboard focus is visible, but the only link is about 127×24px, too short for a robust touch target.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/mobile.png"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-003"
      ]
    },
    {
      "principleId": "support-core-task-success",
      "checkId": "clear-purpose-and-primary-action",
      "status": "issues",
      "confidence": "high",
      "method": "First-viewport screenshot and heading/action DOM review",
      "evidence": "The root communicates only “Error” and cannot explain or expose the requested service; its sole action leaves for another origin.",
      "artifacts": [
        "evidence/home.png",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-001"
      ]
    },
    {
      "principleId": "support-core-task-success",
      "checkId": "primary-flow-completion",
      "status": "issues",
      "confidence": "high",
      "method": "HAR status plus rendered primary-path walkthrough",
      "evidence": "The main document returns HTTP 404, so no service journey is available to complete.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/home.png"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-001"
      ]
    },
    {
      "principleId": "support-core-task-success",
      "checkId": "clear-system-state-and-recovery",
      "status": "pass",
      "confidence": "high",
      "method": "Rendered error-state and recovery-control review",
      "evidence": "The failure state is explicit in Japanese and supplies a clearly labelled return action; context is not hidden behind a spinner.",
      "artifacts": [
        "evidence/home.png",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "checkId": "good-core-web-vitals",
      "status": "pass",
      "confidence": "high",
      "method": "DevTools load trace and layout/long-task observers",
      "evidence": "Trace measured FCP/LCP 1.755s, TBT 0ms; layout measured CLS 0 and no long tasks. The static page has no eligible INP interaction workload.",
      "artifacts": [
        "evidence/load-trace-summary.json",
        "evidence/mobile-layout.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "checkId": "visual-stability",
      "status": "pass",
      "confidence": "high",
      "method": "Layout-shift observer and screenshot",
      "evidence": "Mobile layout observer measured CLS 0 with no shift entries; all visible content stayed stable.",
      "artifacts": [
        "evidence/mobile-layout.json",
        "evidence/mobile.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "checkId": "efficient-main-thread",
      "status": "pass",
      "confidence": "high",
      "method": "Trace long-task summary and rendered DOM inspection",
      "evidence": "Trace reports zero long tasks and 0ms total blocking time; the DOM contains no scripts.",
      "artifacts": [
        "evidence/load-trace-summary.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "checkId": "efficient-resource-delivery",
      "status": "issues",
      "confidence": "high",
      "method": "HAR summary confirmed against stylesheet placement in DOM plus trace summary",
      "evidence": "For 9.6KB total, load end is 2.732s; document takes 1.421s, three assets lack cache headers, a favicon redirects, and CSS is parser-blocking.",
      "artifacts": [
        "evidence/load-trace-summary.json",
        "evidence/load-summary.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-004"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "checkId": "trim-unused-and-duplicate-code",
      "status": "pass",
      "confidence": "high",
      "method": "HAR resource inventory and DOM script inspection",
      "evidence": "HAR transfers only 9.6KB across six first-party requests and the DOM has no JavaScript bundles or third-party code.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-inclusive",
      "checkId": "names-roles-labels",
      "status": "pass",
      "confidence": "high",
      "method": "DOM semantics inventory",
      "evidence": "The only interactive element is a native anchor with visible text; there are no form fields, images, canvas, or unnamed custom controls.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-inclusive",
      "checkId": "sufficient-contrast",
      "status": "pass",
      "confidence": "high",
      "method": "Normal and forced-colors visual review",
      "evidence": "Normal and forced-color screenshots show black text/actions against white/system surfaces with visible borders and underlines.",
      "artifacts": [
        "evidence/home.png",
        "evidence/high-contrast.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-inclusive",
      "checkId": "structure-and-focus",
      "status": "issues",
      "confidence": "high",
      "method": "Focused-element style probe and landmark/heading inventory",
      "evidence": "Focus has a visible browser outline and headings are ordered, but main=0 leaves primary content without a main landmark.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-005"
      ]
    },
    {
      "principleId": "be-inclusive",
      "checkId": "legible-text",
      "status": "pass",
      "confidence": "high",
      "method": "Multi-viewport screenshot and layout review",
      "evidence": "Desktop/mobile screenshots show unclipped Japanese text with short lines and no overlap or horizontal scrolling.",
      "artifacts": [
        "evidence/home.png",
        "evidence/mobile.png",
        "evidence/mobile-layout.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-inclusive",
      "checkId": "zoom-reflow-targets-and-media",
      "status": "issues",
      "confidence": "high",
      "method": "Viewport-meta and target-size probe",
      "evidence": "Viewport explicitly sets maximum-scale=1.0,user-scalable=no and the sole target is 24px high.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/mobile.png"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-003"
      ]
    },
    {
      "principleId": "follow-best-practices",
      "checkId": "no-console-errors",
      "status": "pass",
      "confidence": "high",
      "method": "DOM executable-script inventory and HAR error review",
      "evidence": "Rendered DOM contains no scripts, HAR shows all subresources successful, and no executable application code exists to throw during load.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/load-summary.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "follow-best-practices",
      "checkId": "sound-document-and-assets",
      "status": "pass",
      "confidence": "high",
      "method": "Document metadata and image audit",
      "evidence": "Document has HTML doctype, UTF-8 charset, valid heading text, and no img elements with sizing/aspect-ratio defects.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/images.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "follow-best-practices",
      "checkId": "browser-platform-hygiene",
      "status": "pass",
      "confidence": "high",
      "method": "DOM and application-surface inventory",
      "evidence": "No scripts, permission calls, forms, paste handlers, or application libraries are present; the static markup uses standard elements.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-discoverable",
      "checkId": "title-and-description",
      "status": "issues",
      "confidence": "high",
      "method": "DOM metadata probe",
      "evidence": "Title is only エラー and meta description is absent.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-006"
      ]
    },
    {
      "principleId": "be-discoverable",
      "checkId": "crawlable-and-mobile-friendly",
      "status": "issues",
      "confidence": "high",
      "method": "DOM link and viewport-meta probe",
      "evidence": "Viewport exists and link text is descriptive, but user scaling is disabled and the sole crawlable destination is insecure HTTP.",
      "artifacts": [
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-003",
        "F-007"
      ]
    },
    {
      "principleId": "be-discoverable",
      "checkId": "canonical-and-indexing-signals",
      "status": "issues",
      "confidence": "high",
      "method": "HAR status, metadata probe, and raw crawler fetch attempt",
      "evidence": "Main document is HTTP 404 with no canonical; raw robots/sitemap fetch was blocked by unsafe legacy TLS renegotiation.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/discoverability.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-007"
      ]
    },
    {
      "principleId": "be-discoverable",
      "checkId": "structured-and-shareable-metadata",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "This is an error state, not an article, product, event, place, organization profile, or other rich entity requiring structured/share metadata.",
      "pathIds": [
        "root"
      ],
      "reason": "This is an error state, not an article, product, event, place, organization profile, or other rich entity requiring structured/share metadata."
    },
    {
      "principleId": "be-private-and-secure",
      "checkId": "secure-transport-and-headers",
      "status": "issues",
      "confidence": "high",
      "method": "Security-header primitive and navigation URL inspection",
      "evidence": "HTTPS is used, but CSP, HSTS and nosniff are absent and the recovery URL downgrades to HTTP.",
      "artifacts": [
        "evidence/headers.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-008"
      ]
    },
    {
      "principleId": "be-private-and-secure",
      "checkId": "data-minimisation-and-third-parties",
      "status": "pass",
      "confidence": "high",
      "method": "Trackers, cookies, secrets and HAR third-party probes",
      "evidence": "Trackers probe finds zero third-party origins/known trackers; cookies finds zero cookies; secrets scan finds no exposed credentials.",
      "artifacts": [
        "evidence/trackers.json",
        "evidence/cookies.json",
        "evidence/secrets.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-private-and-secure",
      "checkId": "in-context-permissions-and-modern-auth",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No permission request or authentication surface exists on the error document.",
      "pathIds": [
        "root"
      ],
      "reason": "No permission request or authentication surface exists on the error document."
    },
    {
      "principleId": "be-private-and-secure",
      "checkId": "defensive-browser-policies",
      "status": "issues",
      "confidence": "high",
      "method": "Security-response-header inspection",
      "evidence": "No clickjacking protection, Referrer-Policy, Permissions-Policy, CSP/frame-ancestors, or HSTS is present.",
      "artifacts": [
        "evidence/headers.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-008"
      ]
    },
    {
      "principleId": "be-resilient",
      "checkId": "progressive-enhancement",
      "status": "pass",
      "confidence": "high",
      "method": "Rendered DOM and JavaScript-disabled crawler screenshot comparison",
      "evidence": "The error content is server-rendered HTML with no scripts or empty SPA mount; browser rendering does not depend on JavaScript.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/discoverability-rendered.png",
        "evidence/discoverability-crawler.png"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-resilient",
      "checkId": "resilient-runtime-behaviour",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No overlay, menu, asynchronous dependency, client state, or background runtime exists to exercise.",
      "pathIds": [
        "root"
      ],
      "reason": "No overlay, menu, asynchronous dependency, client state, or background runtime exists to exercise."
    },
    {
      "principleId": "be-resilient",
      "checkId": "offline-and-installable",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "This public error document is not an app-like surface, so installability and an offline app shell are not proportionate requirements.",
      "pathIds": [
        "root"
      ],
      "reason": "This public error document is not an app-like surface, so installability and an offline app shell are not proportionate requirements."
    },
    {
      "principleId": "be-resilient",
      "checkId": "network-and-http-failure-states",
      "status": "pass",
      "confidence": "high",
      "method": "Observed HTTP failure-state walkthrough",
      "evidence": "The observed 404 renders an explicit Japanese error, likely causes, and a labelled recovery action rather than a blank shell or spinner.",
      "artifacts": [
        "evidence/home.png",
        "evidence/load-summary.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-internationalised",
      "checkId": "lang-dir-and-logical-properties",
      "status": "issues",
      "confidence": "high",
      "method": "DOM language and stylesheet logical-property probe",
      "evidence": "html lang=ja is correct, but CSS uses physical left/right properties and no logical inline/block properties.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "pathIds": [
        "root"
      ],
      "findingIds": [
        "F-009"
      ]
    },
    {
      "principleId": "be-internationalised",
      "checkId": "locale-aware-data",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The error document contains no date, time, number, currency, duration, calendar, or user-entered locale data to format.",
      "pathIds": [
        "root"
      ],
      "reason": "The error document contains no date, time, number, currency, duration, calendar, or user-entered locale data to format."
    },
    {
      "principleId": "be-internationalised",
      "checkId": "time-zone-correctness",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The error document contains no scheduled event, timestamp, recurring interval, or time-zone-sensitive concept.",
      "pathIds": [
        "root"
      ],
      "reason": "The error document contains no scheduled event, timestamp, recurring interval, or time-zone-sensitive concept."
    },
    {
      "principleId": "be-trustworthy",
      "checkId": "no-dark-patterns",
      "status": "pass",
      "confidence": "high",
      "method": "Rendered commercial/deceptive-pattern inventory",
      "evidence": "The page contains one plainly labelled recovery link and no consent, pricing, ad, continuity, nagging, or disguised-control surface.",
      "artifacts": [
        "evidence/home.png",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-trustworthy",
      "checkId": "humane-error-handling",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "There is no form or user input to validate. The HTTP error-state recovery itself is assessed under resilience/core-task checks.",
      "pathIds": [
        "root"
      ],
      "reason": "There is no form or user input to validate. The HTTP error-state recovery itself is assessed under resilience/core-task checks."
    },
    {
      "principleId": "be-trustworthy",
      "checkId": "trustworthy-input-assistance",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No input, sign-in, address, payment, or account field exists.",
      "pathIds": [
        "root"
      ],
      "reason": "No input, sign-in, address, payment, or account field exists."
    },
    {
      "principleId": "be-trustworthy",
      "checkId": "safe-commercial-and-account-flows",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "No checkout, subscription, consent, authentication, or account-management flow is exposed.",
      "pathIds": [
        "root"
      ],
      "reason": "No checkout, subscription, consent, authentication, or account-management flow is exposed."
    },
    {
      "principleId": "be-sustainable",
      "checkId": "optimised-assets",
      "status": "pass",
      "confidence": "high",
      "method": "HAR byte budget and image audit",
      "evidence": "HAR transfers only 1.3KB of two decorative images and 9.6KB total; image audit finds no img sizing, srcset, lazy-load, or format waste.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/images.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-sustainable",
      "checkId": "no-wasteful-work",
      "status": "pass",
      "confidence": "high",
      "method": "Network, trace, and DOM work inventory",
      "evidence": "No scripts, background requests, timers, media, or third-party activity exist; trace reports no long tasks.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/load-trace-summary.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-sustainable",
      "checkId": "third-party-and-media-budget",
      "status": "pass",
      "confidence": "high",
      "method": "HAR third-party/media inventory and trackers probe",
      "evidence": "HAR and tracker probes find zero third-party bytes/origins and no audio, video, fonts, autoplay, or animation.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/trackers.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-agent-ready",
      "checkId": "structured-agent-capabilities",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The observed URL is only a public error state with no user capability or form to expose safely to an agent.",
      "pathIds": [
        "root"
      ],
      "reason": "The observed URL is only a public error state with no user capability or form to expose safely to an agent."
    },
    {
      "principleId": "be-agent-ready",
      "checkId": "on-device-inference",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The minimal static error state has no inference/summarisation task where an on-device model would improve the experience.",
      "pathIds": [
        "root"
      ],
      "reason": "The minimal static error state has no inference/summarisation task where an on-device model would improve the experience."
    },
    {
      "principleId": "be-memory-efficient",
      "checkId": "no-leak-under-repeated-interaction",
      "status": "not-applicable",
      "confidence": "high",
      "method": "Applicability judgement from rendered DOM and page inventory",
      "evidence": "The static error page has no modal, route state, feed, editor, or other representative interaction to repeat without fabricating a test.",
      "pathIds": [
        "root"
      ],
      "reason": "The static error page has no modal, route state, feed, editor, or other representative interaction to repeat without fabricating a test."
    },
    {
      "principleId": "be-memory-efficient",
      "checkId": "bounded-footprint",
      "status": "pass",
      "confidence": "high",
      "method": "Heap summary footprint measurement",
      "evidence": "Heap snapshot reports 27,336 nodes, 107,651 edges and 853,204 self-size bytes, proportionate to this tiny static page.",
      "artifacts": [
        "evidence/heap-baseline.json"
      ],
      "pathIds": [
        "root"
      ]
    },
    {
      "principleId": "be-memory-efficient",
      "checkId": "no-detached-dom-or-unbounded-listeners",
      "status": "pass",
      "confidence": "high",
      "method": "Heap constructor summary plus DOM executable-code inventory",
      "evidence": "The page has no application scripts or repeated client lifecycle; the heap summary shows a bounded single static state with no app-created listener/timer surface.",
      "artifacts": [
        "evidence/heap-baseline.json",
        "evidence/home-dom.json"
      ],
      "pathIds": [
        "root"
      ]
    }
  ],
  "principleOutcomes": [
    {
      "principleId": "respect-user-preferences",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-002"
      ]
    },
    {
      "principleId": "implement-natural-interactions",
      "expectation": "default",
      "status": "pass"
    },
    {
      "principleId": "provide-guided-navigation",
      "expectation": "default",
      "status": "pass"
    },
    {
      "principleId": "maximize-content-reduce-noise",
      "expectation": "default",
      "status": "pass"
    },
    {
      "principleId": "adapt-to-the-form-factor",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-003"
      ]
    },
    {
      "principleId": "support-core-task-success",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-001"
      ]
    },
    {
      "principleId": "be-fast-and-stable",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-004"
      ]
    },
    {
      "principleId": "be-inclusive",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-005",
        "F-003"
      ]
    },
    {
      "principleId": "follow-best-practices",
      "expectation": "default",
      "status": "pass"
    },
    {
      "principleId": "be-discoverable",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-006",
        "F-003",
        "F-007"
      ]
    },
    {
      "principleId": "be-private-and-secure",
      "expectation": "default",
      "status": "issues",
      "findingIds": [
        "F-008"
      ]
    },
    {
      "principleId": "be-resilient",
      "expectation": "contextual",
      "status": "pass"
    },
    {
      "principleId": "be-internationalised",
      "expectation": "contextual",
      "status": "issues",
      "findingIds": [
        "F-009"
      ]
    },
    {
      "principleId": "be-trustworthy",
      "expectation": "default",
      "status": "pass"
    },
    {
      "principleId": "be-sustainable",
      "expectation": "contextual",
      "status": "pass"
    },
    {
      "principleId": "be-agent-ready",
      "expectation": "contextual",
      "status": "not-applicable",
      "reason": "The observed URL is only a public error state with no user capability or form to expose safely to an agent. The minimal static error state has no inference/summarisation task where an on-device model would improve the experience."
    },
    {
      "principleId": "be-memory-efficient",
      "expectation": "default",
      "status": "pass"
    }
  ],
  "paths": [
    {
      "id": "root",
      "description": "Requested public root and its server-rendered error template; represents the only same-origin page exposed by the entry URL.",
      "url": "https://service.smt.docomo.ne.jp/",
      "conditions": [
        "desktop",
        "keyboard focus",
        "load/network/security",
        "JavaScript disabled"
      ],
      "result": "issues"
    },
    {
      "id": "root-mobile",
      "description": "Root error template at a narrow mobile viewport to test reflow, overflow and target sizing.",
      "url": "https://service.smt.docomo.ne.jp/",
      "conditions": [
        "viewport: 360x800"
      ],
      "result": "issues"
    },
    {
      "id": "root-dark",
      "description": "Root error template under dark color preference.",
      "url": "https://service.smt.docomo.ne.jp/",
      "conditions": [
        "prefers-color-scheme: dark"
      ],
      "result": "issues"
    },
    {
      "id": "root-contrast-motion",
      "description": "Root under high contrast/forced colors and reduced motion preferences.",
      "url": "https://service.smt.docomo.ne.jp/",
      "conditions": [
        "prefers-contrast: more",
        "forced-colors: active",
        "prefers-reduced-motion: reduce"
      ],
      "result": "pass"
    }
  ],
  "findings": [
    {
      "id": "F-001",
      "severity": "critical",
      "confidence": "high",
      "summary": "The requested service root is a 404 error page, so its primary task cannot be completed.",
      "evidence": "HAR records the main document as HTTP 404. The rendered page says the specified page does not exist and offers only a link to a different, insecure HTTP origin.",
      "artifacts": [
        "evidence/home.png",
        "evidence/load-summary.json",
        "evidence/home-dom.json"
      ],
      "suggestedFix": "Serve a useful service landing page at this public root, or issue a permanent redirect to the canonical HTTPS destination. Preserve a branded 404 only for genuinely missing paths.",
      "effort": "medium",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "support-core-task-success",
      "principleCheckId": "primary-flow-completion",
      "guidanceId": "forms",
      "guidanceCategory": "forms"
    },
    {
      "id": "F-002",
      "severity": "medium",
      "confidence": "high",
      "summary": "The page ignores the user’s dark color-scheme preference.",
      "evidence": "Under prefers-color-scheme: dark, the screenshot remains white and the computed body background is rgb(255,255,255); color-scheme remains normal.",
      "artifacts": [
        "evidence/dark.png",
        "evidence/dark-dom.json"
      ],
      "suggestedFix": "Declare color-scheme: light dark and supply preference-driven surface, text, border, and browser-control colors using prefers-color-scheme or light-dark().",
      "effort": "small",
      "pathId": "root-dark",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "respect-user-preferences",
      "principleCheckId": "respects-color-scheme",
      "guidanceId": "dark-mode",
      "guidanceCategory": "user-experience"
    },
    {
      "id": "F-003",
      "severity": "high",
      "confidence": "high",
      "summary": "The viewport blocks zoom and the only action has a 24px-high target.",
      "evidence": "The viewport is maximum-scale=1.0,user-scalable=no. The page probe measures the dメニューTOP link at about 127×24px, below the common 44×44 CSS-pixel touch target.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/mobile.png"
      ],
      "suggestedFix": "Remove maximum-scale and user-scalable restrictions, and enlarge the action’s clickable box to at least 44×44 CSS pixels without changing its visible text size.",
      "effort": "small",
      "pathId": "root-mobile",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-inclusive",
      "principleCheckId": "zoom-reflow-targets-and-media",
      "guidanceId": "accessibility",
      "guidanceCategory": "accessibility"
    },
    {
      "id": "F-004",
      "severity": "low",
      "confidence": "high",
      "summary": "A tiny error page has avoidable delivery latency and cache misses.",
      "evidence": "Trace reports LCP 1.755s and load end 2.732s despite only 9.6KB transferred. HAR shows 1.421s for the document, three static assets without cache headers, a favicon redirect, and a parser-blocking stylesheet.",
      "artifacts": [
        "evidence/load-trace-summary.json",
        "evidence/load-summary.json"
      ],
      "suggestedFix": "Return the correct document without the error/redirect chain, cache immutable static assets, inline the tiny critical error styles or ensure the stylesheet is promptly cacheable, and remove the duplicate favicon fetch.",
      "effort": "small",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-fast-and-stable",
      "principleCheckId": "efficient-resource-delivery",
      "guidanceId": "performance",
      "guidanceCategory": "performance"
    },
    {
      "id": "F-005",
      "severity": "low",
      "confidence": "high",
      "summary": "The document has no main landmark.",
      "evidence": "The DOM probe reports header=1 and footer=1 but main=0; the error content is placed in an unlabelled section.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "suggestedFix": "Wrap the primary error/recovery content in <main>; keep one descriptive h1 and expose recovery navigation with semantic structure.",
      "effort": "trivial",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-inclusive",
      "principleCheckId": "structure-and-focus",
      "guidanceId": "accessibility",
      "guidanceCategory": "accessibility"
    },
    {
      "id": "F-006",
      "severity": "high",
      "confidence": "high",
      "summary": "The public root has generic, incomplete search metadata.",
      "evidence": "The title is only エラー, meta description is absent, and the response is a 404. The page probe also finds no canonical URL.",
      "artifacts": [
        "evidence/page-probe.json",
        "evidence/load-summary.json",
        "evidence/discoverability.json"
      ],
      "suggestedFix": "Restore a successful landing page with a unique descriptive Japanese title, concise meta description, and canonical HTTPS URL.",
      "effort": "small",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-discoverable",
      "principleCheckId": "title-and-description",
      "guidanceId": "html",
      "guidanceCategory": "html"
    },
    {
      "id": "F-007",
      "severity": "high",
      "confidence": "high",
      "summary": "Indexing and navigation signals point to a broken or insecure destination.",
      "evidence": "HAR records HTTP 404 for the root; there is no canonical URL, and the only crawlable link uses http://smt.docomo.ne.jp/. robots.txt and sitemap.xml could not be fetched by the raw client because the endpoint requires unsafe legacy TLS renegotiation.",
      "artifacts": [
        "evidence/load-summary.json",
        "evidence/page-probe.json",
        "evidence/discoverability.json"
      ],
      "suggestedFix": "Return 200 or a permanent HTTPS redirect, make all recovery links HTTPS, publish a consistent canonical URL, and serve robots/sitemap endpoints over current TLS.",
      "effort": "medium",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-discoverable",
      "principleCheckId": "canonical-and-indexing-signals",
      "guidanceId": "html",
      "guidanceCategory": "html"
    },
    {
      "id": "F-008",
      "severity": "high",
      "confidence": "high",
      "summary": "The response omits baseline browser security policies.",
      "evidence": "The headers primitive finds no CSP, HSTS, X-Content-Type-Options, clickjacking protection, Referrer-Policy, or Permissions-Policy. The only recovery action downgrades to HTTP.",
      "artifacts": [
        "evidence/headers.json",
        "evidence/page-probe.json"
      ],
      "suggestedFix": "Add HSTS, CSP including frame-ancestors, nosniff, a strict Referrer-Policy, and a least-privilege Permissions-Policy; make every navigation HTTPS.",
      "effort": "medium",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-private-and-secure",
      "principleCheckId": "secure-transport-and-headers",
      "guidanceId": "security",
      "guidanceCategory": "security"
    },
    {
      "id": "F-009",
      "severity": "low",
      "confidence": "high",
      "summary": "Styles are tied to physical directions rather than writing modes.",
      "evidence": "The CSS/page probe detects physical left/right margins, padding, floats, and image positioning, and no logical inline/block properties.",
      "artifacts": [
        "evidence/home-dom.json",
        "evidence/page-probe.json"
      ],
      "suggestedFix": "Replace layout-relevant left/right properties with margin-inline, padding-inline, inset-inline, and logical alignment so the component survives other writing directions.",
      "effort": "small",
      "pathId": "root",
      "url": "https://service.smt.docomo.ne.jp/",
      "principleId": "be-internationalised",
      "principleCheckId": "lang-dir-and-logical-properties",
      "guidanceId": "translator",
      "guidanceCategory": "internationalization"
    }
  ],
  "taskList": [
    {
      "id": "T-001",
      "title": "Restore the service root or permanently redirect it to the canonical HTTPS destination",
      "priority": 1,
      "findingIds": [
        "F-001",
        "F-006",
        "F-007"
      ],
      "guidanceId": "html",
      "status": "open"
    },
    {
      "id": "T-002",
      "title": "Add baseline security response policies and remove the HTTP downgrade link",
      "priority": 2,
      "findingIds": [
        "F-008"
      ],
      "guidanceId": "security",
      "status": "open"
    },
    {
      "id": "T-003",
      "title": "Allow zoom and enlarge the recovery target",
      "priority": 3,
      "findingIds": [
        "F-003"
      ],
      "guidanceId": "accessibility",
      "status": "open"
    },
    {
      "id": "T-004",
      "title": "Add preference-driven dark colors",
      "priority": 4,
      "findingIds": [
        "F-002"
      ],
      "guidanceId": "dark-mode",
      "status": "open"
    },
    {
      "id": "T-005",
      "title": "Improve static resource caching and remove avoidable delivery hops",
      "priority": 5,
      "findingIds": [
        "F-004"
      ],
      "guidanceId": "performance",
      "status": "open"
    },
    {
      "id": "T-006",
      "title": "Add main landmark and logical-direction CSS",
      "priority": 6,
      "findingIds": [
        "F-005",
        "F-009"
      ],
      "guidanceId": "accessibility",
      "status": "open"
    }
  ],
  "artifacts": [
    {
      "type": "dom",
      "path": "evidence/home-dom.json",
      "caption": "Rendered HTML, CSS and computed styles for the public root",
      "condition": "default",
      "findingIds": [
        "F-001",
        "F-005",
        "F-009"
      ]
    },
    {
      "type": "screenshot",
      "path": "evidence/home.png",
      "caption": "Desktop first viewport shows the returned error page",
      "condition": "desktop",
      "findingIds": [
        "F-001"
      ]
    },
    {
      "type": "screenshot",
      "path": "evidence/mobile.png",
      "caption": "Narrow viewport rendering",
      "condition": "viewport: 360x800",
      "findingIds": [
        "F-003"
      ]
    },
    {
      "type": "layout",
      "path": "evidence/mobile-layout.json",
      "caption": "Narrow layout, CLS, long-task and overflow metrics",
      "condition": "viewport: 360x800",
      "findingIds": []
    },
    {
      "type": "screenshot",
      "path": "evidence/dark.png",
      "caption": "Page under requested dark color scheme",
      "condition": "prefers-color-scheme: dark",
      "findingIds": [
        "F-002"
      ]
    },
    {
      "type": "dom",
      "path": "evidence/dark-dom.json",
      "caption": "Computed colors under requested dark scheme",
      "condition": "prefers-color-scheme: dark",
      "findingIds": [
        "F-002"
      ]
    },
    {
      "type": "screenshot",
      "path": "evidence/high-contrast.png",
      "caption": "Forced-color/high-contrast rendering",
      "condition": "prefers-contrast: more; forced-colors: active",
      "findingIds": []
    },
    {
      "type": "other",
      "path": "evidence/reduced-motion.json",
      "caption": "Animation inventory under reduced motion",
      "condition": "prefers-reduced-motion: reduce",
      "findingIds": []
    },
    {
      "type": "trace",
      "path": "evidence/load-trace.json",
      "caption": "DevTools load performance trace",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "trace-summary",
      "path": "evidence/load-trace-summary.json",
      "caption": "Compact load timing and main-thread summary",
      "condition": "load",
      "findingIds": [
        "F-004"
      ]
    },
    {
      "type": "har",
      "path": "evidence/load.har",
      "caption": "Network archive for root load",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "har-summary",
      "path": "evidence/load-summary.json",
      "caption": "Network totals, status, caching and delivery summary",
      "condition": "load",
      "findingIds": [
        "F-001",
        "F-004",
        "F-006",
        "F-007"
      ]
    },
    {
      "type": "other",
      "path": "evidence/page-probe.json",
      "caption": "Metadata, landmarks, link target, focus and CSS-feature probe",
      "condition": "default",
      "findingIds": [
        "F-003",
        "F-005",
        "F-006",
        "F-007",
        "F-008",
        "F-009"
      ]
    },
    {
      "type": "other",
      "path": "evidence/headers.json",
      "caption": "Security response-header inspection",
      "condition": "load",
      "findingIds": [
        "F-008"
      ]
    },
    {
      "type": "other",
      "path": "evidence/cookies.json",
      "caption": "Cookie security/privacy inspection",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "other",
      "path": "evidence/trackers.json",
      "caption": "Third-party and tracker inventory",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "other",
      "path": "evidence/images.json",
      "caption": "Rendered image audit",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "other",
      "path": "evidence/secrets.json",
      "caption": "Client-visible secret scan",
      "condition": "load",
      "findingIds": []
    },
    {
      "type": "heap",
      "path": "evidence/heap-baseline.json",
      "caption": "Single-state heap summary",
      "condition": "after load",
      "findingIds": []
    },
    {
      "type": "discoverability",
      "path": "evidence/discoverability.json",
      "caption": "Raw-fetch versus browser discoverability result",
      "condition": "crawler comparison",
      "findingIds": [
        "F-006",
        "F-007"
      ]
    },
    {
      "type": "screenshot",
      "path": "evidence/discoverability-rendered.png",
      "caption": "Browser-rendered discoverability view",
      "condition": "JavaScript enabled",
      "findingIds": []
    },
    {
      "type": "screenshot",
      "path": "evidence/discoverability-crawler.png",
      "caption": "Crawler view",
      "condition": "JavaScript disabled",
      "findingIds": []
    },
    {
      "type": "lighthouse",
      "path": "evidence/lighthouse.json",
      "caption": "Lighthouse attempted; audit blocked by the page HTTP 404",
      "condition": "mobile Lighthouse",
      "findingIds": []
    }
  ],
  "budget": {
    "wallClockSeconds": 600,
    "pathCount": 4,
    "auditPasses": 1
  },
  "agent": "pi",
  "runId": "2026-07-21T13-18-59-730Z"
}