{
  "contract": "aesthetary.record/1.0",
  "record_spec": "1.1.0",
  "semantics": {
    "vocabulary": "aesthetary.public-evidence/1.0",
    "definitions": "vocabulary.json"
  },
  "slug": "streamline-moderne",
  "name": "Streamline Moderne",
  "identity": {
    "definition": {
      "state": "resolved",
      "text": "Streamline Moderne is an American style of architecture and industrial design that peaked in the late 1930s, expressing the speed of aeroplanes, ships and cars through horizontal lines, rounded corners and curves, speed-line bands, nautical details such as porthole windows and railings, and little applied ornament; its translation into palette and type for graphic surfaces is Aesthetary's reading."
    },
    "scope": {
      "state": "resolved",
      "text": "Streamline Moderne is 1930s-40s American architecture and industrial design. Aesthetary translates its horizontal lines, round corners and nautical details to graphic surfaces; palette and type are our reading.",
      "ruling": "D0-1"
    },
    "aliases": [
      "Moderne",
      "aerodynamic deco",
      "1930s streamline"
    ],
    "layer_verdict": {
      "state": "ruled",
      "value": "coherent_but_narrower",
      "ruling": "D0-1"
    }
  },
  "native_medium": {
    "state": "resolved",
    "value": [
      "architecture"
    ],
    "evidence": {
      "quote": "1930s-40s American architecture and industrial design",
      "field": "identity.scope (D0-1 approved scope)"
    },
    "ruling": "D0-5 MD-2 (2026-09-28)"
  },
  "research": {
    "line": "partly_sourced",
    "text": "Partly sourced",
    "sentence": "7 sources attached."
  },
  "areas": [
    {
      "area": "layout",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "typography",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "color",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "imagery",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "surface",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": null,
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "interface",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": null,
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "motion",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "motif",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": null,
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "technique",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": null,
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "form",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "hierarchy",
      "state": "resolved",
      "canon": "specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Specified"
      }
    },
    {
      "area": "density",
      "state": "resolved",
      "canon": "not_canonically_specified",
      "importance": "unknown",
      "posture_basis": "synthesis",
      "label": {
        "text": "Not specified by the source"
      }
    }
  ],
  "claims": [
    {
      "id": "layout-3",
      "text": "Composition: horizontal speed lines; curved forms.",
      "role": "rule",
      "area": "layout",
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "hierarchy-13",
      "text": "CURATORIAL: rank by position along the horizontal run — leftmost on the speed line leads. Unusual and native.",
      "role": "rule",
      "area": "hierarchy",
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "imagery-7",
      "text": "Imagery: rendered chrome.",
      "role": "rule",
      "area": "imagery",
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "surface-8",
      "text": "Form/motif/surface/technique: rounded corners, curved forms.",
      "role": "rule",
      "area": null,
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "motion-14",
      "text": "CURATORIAL: horizontal travel at constant velocity. Nothing rises, nothing steps.",
      "role": "rule",
      "area": "motion",
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "sm-r1",
      "text": "Expression is carried by the form itself; applied surface ornament is absent.",
      "role": "rule",
      "area": "form",
      "basis": "documentary",
      "support": {
        "state": "cited_unverified",
        "for": [
          "5VND9KGBRW1BD1BBEQMNQT0AGM"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "unverified",
        "text": "Documented · Source not yet verified"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "sm-r2",
      "text": "Horizontal continuity dominates: no vertical or stepped emphasis competes with the horizontal run of the form.",
      "role": "rule",
      "area": "form",
      "basis": "documentary",
      "support": {
        "state": "cited_unverified",
        "for": [
          "5VND9KGBRW1BD1BBEQMNQT0AGM"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "unverified",
        "text": "Documented · Source not yet verified"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "intent",
      "text": "Everything should look as though it moves through air. Rounding every corner and running horizontal lines across a form borrows the logic of aerodynamics for objects that never travel, so modernity is expressed as motion at rest.",
      "role": "argument",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-1",
      "text": "No stepped or faceted geometry.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-2",
      "text": "No vertical emphasis.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-3",
      "text": "No sharp corners.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-4",
      "text": "No applied ornament.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-5",
      "text": "No diagonal lift.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-7",
      "text": "Not open: steps.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-8",
      "text": "Not open: verticality.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "failure-9",
      "text": "Not open: sharp corners..",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "intent-negation",
      "text": "Refuses the stepped vertical geometry and applied ornament of Art Deco, and refuses sharp corners.",
      "role": "argument",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "intent-cost",
      "text": "Costs accepted: Ornamental richness; Verticality; Distinction from Art Deco at a glance",
      "role": "argument",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "intent-audience",
      "text": "Audience: A viewer who reads streamlining as modern and efficient rather than as styling.",
      "role": "argument",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "v1-distinguishing",
      "text": "Curves where the parent has steps; aerodynamic rather than ziggurat",
      "role": "diagnostic",
      "area": null,
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "v1-era",
      "text": "Era: early-modernist",
      "role": "context",
      "area": null,
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "v1-mood",
      "text": "Mood: sophisticated",
      "role": "context",
      "area": null,
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "v1-cross-library",
      "text": "Cross-library: Imagery: rendered chrome",
      "role": "context",
      "area": null,
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "surface-8.form",
      "text": "Form: rounded corners, curved forms",
      "role": "rule",
      "area": "form",
      "basis": "inherited",
      "support": {
        "state": "inherited",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "catalogue",
        "text": "From our catalogue entry"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "freedom-typography",
      "text": "Declared freedom: typography.",
      "role": "context",
      "area": "typography",
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "declared-freedom",
      "text": "Declared freedom: how many speed lines; chrome intensity.",
      "role": "context",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "motif-scope-reading",
      "text": "Aesthetary translates its horizontal lines, round corners and nautical details to graphic surfaces.",
      "role": "context",
      "area": "motif",
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "typography-scope-reading",
      "text": "Palette and type are our reading.",
      "role": "context",
      "area": "typography",
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:typography-1",
      "text": "Streamline Moderne storefront signs were typically built of individual letters, often in a sans-serif contemporary typeface.",
      "role": "rule",
      "area": "typography",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "storefront-specific character-defining features, San Francisco context statement"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:typography-2",
      "text": "Walter Huxley was a proponent of the pared-back streamline style; his 1935 ATF typeface Huxley Vertical became one of the most popular ways to give printing this Deco flavour.",
      "role": "context",
      "area": "typography",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S5"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "foundry naming and one designer; not a style-wide rule"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:motif-1",
      "text": "Speed lines (bands of horizontal piping or grooves) are a recurring mark on buildings, cars and small objects.",
      "role": "rule",
      "area": "motif",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3",
          "kcc-streamline-moderne-S4"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:motif-2",
      "text": "Nautical details recur: porthole windows, ship-like railings, curved glass; in France the style was called paquebot (ocean-liner style).",
      "role": "rule",
      "area": "motif",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S1",
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "'sometimes', per Getty"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:motif-3",
      "text": "Applied historical ornament is generally absent; the repeating marks are the speed lines and nautical elements themselves.",
      "role": "negative",
      "area": "motif",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:surface-1",
      "text": "Walls are smooth stucco or concrete, often painted white.",
      "role": "rule",
      "area": "surface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "San Francisco residential; WP adds 'subdued pastel'"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:surface-2",
      "text": "Industrial and new synthetic materials carry the look: chrome, Bakelite and other plastics, aluminium, stainless steel, glass block, tinted structural glass (Vitrolite, Carrara), porcelain enamel, plastic laminates.",
      "role": "rule",
      "area": "surface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S1",
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S4",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:surface-3",
      "text": "Surfaces are sleek and gleaming: materials gave 'the appearance of newness and sleekness', and surfaces were polished to a gleaming finish.",
      "role": "diagnostic",
      "area": "surface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S3",
          "kcc-streamline-moderne-S6"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "S6 is a secondary architecture-media source"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:interface-1",
      "text": "Radius is the style's defining edge treatment: rounded corners and curved surfaces, wraparound and curved glass, curved railings and overhangs.",
      "role": "rule",
      "area": "interface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S1",
          "kcc-streamline-moderne-S6"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "architecture; translation to screen corner radius is Aesthetary's reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:interface-2",
      "text": "Borders are metal bands and trim (aluminium, stainless steel, chrome) rather than ornamental frames.",
      "role": "context",
      "area": "interface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "door and window trim"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:interface-3",
      "text": "A boxy variant without curves exists under the names Moderne or Art Moderne, so rounded radius distinguishes Streamline Moderne specifically.",
      "role": "diagnostic",
      "area": "interface",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:technique-1",
      "text": "The look depended on new building technologies, notably bending structural glass, and on newly developed materials (extruded aluminium, porcelain enamel, glass block).",
      "role": "rule",
      "area": "technique",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:technique-2",
      "text": "Streamlining was based on admiration for industry and speed; contemporary criticism quoted by the Bard Graduate Center called it absurd to borrow forms from unrelated machinery, as with a pencil sharpener streamlined to resemble an airplane.",
      "role": "context",
      "area": "technique",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S4"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "1944 MoMA criticism quoted by BGC"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:technique-3",
      "text": "Porcelain enamel facing was often laid in a squared pattern on storefronts.",
      "role": "context",
      "area": "technique",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "storefronts"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:motion-1",
      "text": "Motion is represented, not performed: horizontal lines and rounded forms are described as creating 'the impression of motion and speed' in static buildings and objects.",
      "role": "rule",
      "area": "motion",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S6",
          "kcc-streamline-moderne-S2"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:motion-2",
      "text": "Electric light was built into architectural structure in the style, but no opened source documents animated or moving light.",
      "role": "context",
      "area": "motion",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:definition",
      "text": "Streamline Moderne is an American style of architecture and industrial design that peaked in the late 1930s, expressing the speed of aeroplanes, ships and cars through horizontal lines, rounded corners and curves, speed-line bands, nautical details such as porthole windows and railings, and little applied ornament; its translation into palette and type for graphic surfaces is Aesthetary's reading.",
      "role": "definition",
      "area": null,
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S1",
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "kcc:color-from-surface-1",
      "text": "Walls are smooth stucco or concrete, often painted white.",
      "role": "rule",
      "area": "color",
      "basis": "documentary",
      "support": {
        "state": "cited",
        "for": [
          "kcc-streamline-moderne-S2",
          "kcc-streamline-moderne-S3"
        ],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "documented",
        "mark": "attached",
        "text": "Documented · Source attached"
      },
      "scope": {
        "practice": "San Francisco residential; WP adds 'subdued pastel'"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "dcc:gestalt",
      "text": "Horizontal speed lines running in parallel across a form, corners rounded without exception, curved and continuous shapes rather than faceted ones, and bands of chrome or aluminium trim on smooth white or pale stucco. The diagnostic condition is horizontal continuity: the eye is pulled sideways along unbroken curves, and a stepped edge or a dominant vertical belongs to Art Deco. Art Deco steps and rises; Googie lifts diagonally and shouts at a motorist.",
      "role": "diagnostic",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [
        "kcc:motif-1",
        "kcc:interface-1",
        "kcc:interface-2",
        "kcc:surface-1",
        "kcc:surface-2",
        "kcc:motion-1"
      ],
      "ruling": null
    },
    {
      "id": "dcc:failure-6",
      "text": "Against Art Deco: curved/horizontal versus stepped/vertical. Against Googie: horizontal speed versus diagonal lift. Anti-signature: a stepped setback or vertical emphasis returns it to Art Deco. An angled baseline makes it Googie.",
      "role": "negative",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    },
    {
      "id": "dcc:gestalt-boundary",
      "text": "Against Art Deco: curved/horizontal versus stepped/vertical. Against Googie: horizontal speed versus diagonal lift. Anti-signature: a stepped setback or vertical emphasis returns it to Art Deco. An angled baseline makes it Googie.",
      "role": "boundary",
      "area": null,
      "basis": "synthesis",
      "support": {
        "state": "none",
        "for": [],
        "against": [],
        "contested": false
      },
      "label": {
        "kind": "reading",
        "text": "Our reading"
      },
      "derives_from": [],
      "ruling": null
    }
  ],
  "web_translations": [],
  "standard_practice": [],
  "sources": [
    {
      "id": "5VND9KGBRW1BD1BBEQMNQT0AGM",
      "kind": "source",
      "title": "Streamline Moderne: An Era of Curves, Speed, and Modernity",
      "url": "https://parametric-architecture.com/streamline-moderne/",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "phase3-batch-01:S6",
      "kind": "source",
      "title": "Parametric Architecture, \"Streamline Moderne: An Era of Curves, Speed and Modernity\"",
      "url": null,
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S1",
      "kind": "source",
      "title": "Streamlined Moderne (AAT 300253564)",
      "url": "https://www.getty.edu/vow/AATFullDisplay?find=Moderne&logic=AND&note=&english=N&prev_page=3&subjectid=300253564",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S2",
      "kind": "source",
      "title": "San Francisco Modern Architecture and Landscape Design 1935–1970 Historic Context Statement (with Case Report 2011.0059U)",
      "url": "https://commissions.sfplanning.org/hpcpackets/2011.0059U.pdf",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S3",
      "kind": "source",
      "title": "Streamline Moderne",
      "url": "https://en.wikipedia.org/wiki/Streamline_Moderne",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S4",
      "kind": "source",
      "title": "American Streamlined Design: The World of Tomorrow",
      "url": "https://www.bgc.bard.edu/gallery/exhibitions/36/american-streamlined-design",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S5",
      "kind": "source",
      "title": "Art Deco (Inspire Me: moderne and streamline styles of the 1920s and 1930s)",
      "url": "https://letterformarchive.org/art-deco/",
      "status": "verified",
      "retrieval": "retrieved"
    },
    {
      "id": "kcc-streamline-moderne-S6",
      "kind": "source",
      "title": "Streamline Moderne: An Era of Curves, Speed, and Modernity",
      "url": "https://parametric-architecture.com/streamline-moderne/",
      "status": "verified",
      "retrieval": "retrieved"
    }
  ],
  "relations": [
    {
      "slug": "googie",
      "kind": "confused_with",
      "status": "proposed"
    },
    {
      "slug": "art-deco",
      "kind": "confused_with",
      "status": "proposed"
    },
    {
      "slug": "art-deco",
      "kind": "specialises",
      "status": "proposed"
    }
  ],
  "open": [
    {
      "kind": "open_question",
      "question": "[form_module] A1: this language is native to substrate \"built_space\". Author a form module (substrate + transfer_note), or set depth_policy influence_only."
    },
    {
      "kind": "missing_research",
      "question": "Is there a style-wide Streamline Moderne lettering convention (e.g. horizontally stressed capitals, speed-line lettering)?"
    },
    {
      "kind": "missing_research",
      "question": "Is Streamline Moderne a member of Art Deco or a peer?"
    }
  ],
  "aesthetary_build": {
    "note": "Values Aesthetary built with. Not claims about the Aesthetic.",
    "measured": {
      "note": "Read from the page's own stylesheet at build time. Values Aesthetary built with, not claims about the Aesthetic.",
      "slug": "streamline-moderne",
      "stylesheet": "streamline-moderne.css",
      "bytes": 20448,
      "colours": [
        "#F4EDDF",
        "#232930",
        "#4A525B",
        "#155263",
        "#5A646E",
        "#6E7883",
        "#EDE3CE",
        "#EDF1F3",
        "#B9C1C8",
        "#99A2AB"
      ],
      "radii": [
        "1.4rem",
        "999px"
      ],
      "fontSizes": [
        "0.85rem",
        "0.9rem",
        "0.95rem",
        "1rem"
      ],
      "faces": [
        "Jost SM"
      ],
      "tokens": [
        {
          "name": "--sm-cream",
          "value": "#F4EDDF"
        },
        {
          "name": "--sm-cream-2",
          "value": "#EDE3CE"
        },
        {
          "name": "--sm-ink",
          "value": "#232930"
        },
        {
          "name": "--sm-ink-2",
          "value": "#4A525B"
        },
        {
          "name": "--sm-petrol",
          "value": "#155263"
        },
        {
          "name": "--sm-chrome-d",
          "value": "#5A646E"
        },
        {
          "name": "--sm-steel",
          "value": "#6E7883"
        },
        {
          "name": "--sm-chrome-hi",
          "value": "#EDF1F3"
        },
        {
          "name": "--sm-geo",
          "value": "\"Jost SM\", \"Century Gothic\", \"Avenir Next\", \"Trebuchet MS\", sans-serif"
        },
        {
          "name": "--sm-chrome",
          "value": "linear-gradient(180deg, var(--sm-chrome-hi) 0%, #B9C1C8 38%, var(--sm-steel) 62%, #99A2AB 100%)"
        },
        {
          "name": "--sm-step",
          "value": "clamp(1.25rem, 5vw, 4.5rem)"
        },
        {
          "name": "--lead",
          "value": "hover { background: var(--sm-ink)"
        }
      ],
      "animates": true,
      "absent": [
        "no text-shadow anywhere"
      ]
    },
    "design_grammar": {
      "note": "Aesthetary's translation of this record into web primitives. Every value carries a basis: \"record\" is a rule the record holds (cites names it), \"translation\" is our choice derived from the cited rules (because says how), \"not_recorded\" means the record is silent (guidance says what to do). A \"record\" value restates a claim the record holds; its standing is that claim's own kind in the record (a requirement, period practice, modern practice, or our interpretation), which the cited rule states. \"record\" does not by itself make a value a property of the language.",
      "slug": "streamline-moderne",
      "version": "2026-09-29",
      "summary": "A starting grammar for a website in Streamline Moderne: one horizontal run, every corner rounded, speed-line bands and thin metal trim on a pale ground, rank read from the left, and motion shown in the lines rather than performed.",
      "color": {
        "roles": [
          {
            "role": "ground",
            "value": "#F4EDDF",
            "use": "The page: a pale, warm white standing for painted stucco.",
            "basis": "translation",
            "cites": [
              "claim:kcc:surface-1",
              "claim:kcc:color-from-surface-1"
            ]
          },
          {
            "role": "ink",
            "value": "#232930",
            "contrast": "12.6:1",
            "use": "Headings and body.",
            "basis": "translation",
            "cites": [
              "claim:typography-scope-reading"
            ]
          },
          {
            "role": "petrol",
            "value": "#155263",
            "contrast": "7.5:1",
            "use": "The one accent: the lead capsule, links, focus.",
            "basis": "translation",
            "cites": [
              "claim:typography-scope-reading"
            ]
          },
          {
            "role": "trim",
            "value": "#5A646E",
            "contrast": "5.2:1",
            "use": "Trim lines and small labels.",
            "basis": "translation",
            "cites": [
              "claim:kcc:interface-2",
              "claim:kcc:surface-2"
            ]
          },
          {
            "role": "chrome",
            "value": "linear-gradient(180deg, #EDF1F3 0%, #B9C1C8 38%, #6E7883 62%, #99A2AB 100%)",
            "use": "Speed-line bands only, drawn as a lit metal rod. Never text, never a fill behind text.",
            "basis": "translation",
            "cites": [
              "claim:kcc:surface-2",
              "claim:kcc:surface-3"
            ]
          }
        ],
        "alternates": [
          {
            "label": "Pure white ground",
            "recorded": "often painted white",
            "value": "#FFFFFF",
            "basis": "translation",
            "cites": [
              "claim:kcc:surface-1"
            ]
          }
        ],
        "rules": [
          {
            "rule": "The ground is a smooth wall, often white.",
            "basis": "record",
            "cites": [
              "claim:kcc:color-from-surface-1"
            ]
          },
          {
            "rule": "Chrome, aluminium and stainless steel are materials for trim and bands.",
            "basis": "record",
            "cites": [
              "claim:kcc:surface-2"
            ]
          },
          {
            "rule": "Use chrome as line work only, never as the palette.",
            "basis": "translation",
            "cites": [
              "claim:kcc:surface-2",
              "claim:kcc:interface-2"
            ],
            "because": "The research treats chrome as a material, so it draws the bands and edges and leaves the ground to the wall colour."
          },
          {
            "rule": "The sources do not specify a palette beyond the wall colour.",
            "basis": "not_recorded",
            "cites": [
              "claim:typography-scope-reading"
            ],
            "guidance": "The ink and the one petrol accent are this page's choice; state any accent as yours.",
            "silence": "source"
          }
        ]
      },
      "typography": {
        "family": {
          "stack": "\"Jost SM\", \"Century Gothic\", \"Avenir Next\", \"Trebuchet MS\", sans-serif",
          "class": "a contemporary sans-serif, after the storefront letters the research documents"
        },
        "roles": [
          {
            "role": "display",
            "size": "clamp(2rem, 5.6vw, 4.1rem)",
            "weight": 600,
            "lineHeight": "1.06",
            "case": "uppercase",
            "tracking": "0.12em",
            "measure": null,
            "setting": "widened: scaleX(1.16) with the box compensated",
            "use": "The one name at the top."
          },
          {
            "role": "plate",
            "size": "0.82rem",
            "weight": 600,
            "lineHeight": "1.4",
            "case": "uppercase",
            "tracking": "0.26em",
            "measure": null,
            "use": "Section name plates seated on the course."
          },
          {
            "role": "body",
            "size": "1rem",
            "weight": 400,
            "lineHeight": "1.8",
            "case": null,
            "tracking": "0.02em",
            "measure": "56ch",
            "use": "Sentences."
          }
        ],
        "rules": [
          {
            "rule": "Storefront signs were built of individual letters, often in a contemporary sans-serif.",
            "basis": "record",
            "cites": [
              "claim:kcc:typography-1"
            ]
          },
          {
            "rule": "Set display type in a geometric sans in capitals, widened and tracked so the word runs sideways.",
            "basis": "translation",
            "cites": [
              "claim:kcc:typography-1",
              "token_rule:sm-r2"
            ],
            "because": "A contemporary sans after the storefront letters, stretched to follow the horizontal run."
          },
          {
            "rule": "Keep headings at one size; rank comes from position, not scale.",
            "basis": "translation",
            "cites": [
              "token_rule:hierarchy-13"
            ],
            "because": "Rank by position along the run."
          },
          {
            "rule": "The sources do not specify body type.",
            "basis": "not_recorded",
            "cites": [
              "claim:freedom-typography"
            ],
            "guidance": "Any calm sans works for sentences; the widened capitals are for names and labels only.",
            "silence": "source"
          }
        ]
      },
      "gridLayout": {
        "summary": "A horizontal run, not a column grid: content hugs the left edge and later items step rightward, with full-width speed courses as the section dividers.",
        "tokens": {
          "step": "clamp(1.25rem, 5vw, 4.5rem)",
          "course-gap": "7px"
        },
        "rules": [
          {
            "rule": "Composition is horizontal speed lines and curved forms.",
            "basis": "record",
            "cites": [
              "token_rule:layout-3"
            ]
          },
          {
            "rule": "Horizontal continuity dominates the form.",
            "basis": "record",
            "cites": [
              "token_rule:sm-r2"
            ]
          },
          {
            "rule": "Rank by position along the horizontal run: the leftmost leads.",
            "basis": "record",
            "cites": [
              "token_rule:hierarchy-13"
            ]
          },
          {
            "rule": "Divide sections with a full-width band of three parallel lines, the middle one heavier.",
            "basis": "translation",
            "cites": [
              "claim:kcc:motif-1",
              "token_rule:layout-3"
            ],
            "because": "Speed lines are bands of horizontal piping or grooves; on a page they are the dividers."
          },
          {
            "rule": "Step each later item one unit to the right instead of stacking it flush.",
            "basis": "translation",
            "cites": [
              "token_rule:hierarchy-13"
            ],
            "because": "Leftmost leads; what follows sits deeper along the run."
          },
          {
            "rule": "Density is not specified by the source.",
            "basis": "not_recorded",
            "cites": [],
            "guidance": "Leave open air to the right of the run; do not claim a density rule.",
            "silence": "source"
          }
        ]
      },
      "shapeGeometry": {
        "tokens": {
          "radius-capsule": "999px",
          "radius-panel": "1.6rem 1rem 1rem 1.6rem",
          "trim-width": "1px",
          "band-heavy": "6px",
          "band-light": "3px"
        },
        "rules": [
          {
            "rule": "Radius is the defining edge: rounded corners and curved surfaces.",
            "basis": "record",
            "cites": [
              "claim:kcc:interface-1"
            ]
          },
          {
            "rule": "Borders are metal bands and trim, not ornamental frames.",
            "basis": "record",
            "cites": [
              "claim:kcc:interface-2"
            ]
          },
          {
            "rule": "A boxy variant exists under other names; the rounded radius is what marks this one.",
            "basis": "record",
            "cites": [
              "claim:kcc:interface-3"
            ]
          },
          {
            "rule": "Carry expression in the form; applied ornament is absent.",
            "basis": "record",
            "cites": [
              "token_rule:sm-r1"
            ]
          },
          {
            "rule": "Round every corner on the page; no square box anywhere.",
            "basis": "translation",
            "cites": [
              "claim:kcc:interface-1",
              "claim:kcc:interface-3"
            ],
            "because": "Radius distinguishes the style from its boxy variant."
          }
        ]
      },
      "imagery": {
        "rules": [
          {
            "rule": "Imagery: rendered chrome.",
            "basis": "record",
            "cites": [
              "token_rule:imagery-7"
            ]
          },
          {
            "rule": "The repeating marks are speed lines and nautical details: portholes, ship-like railings, curved glass.",
            "basis": "record",
            "cites": [
              "claim:kcc:motif-2",
              "claim:kcc:motif-3"
            ]
          },
          {
            "rule": "Draw chrome as a gradient on line work; do not place photographs of chrome as texture.",
            "basis": "translation",
            "cites": [
              "token_rule:imagery-7",
              "claim:kcc:surface-2"
            ],
            "because": "Rendered chrome, used for the bands the research documents."
          },
          {
            "rule": "The sources do not specify a photography or illustration style.",
            "basis": "not_recorded",
            "cites": [
              "claim:kcc:motif-3"
            ],
            "guidance": "Use drawn marks from the documented set; do not add historical ornament to fill space.",
            "silence": "source"
          }
        ]
      },
      "components": {
        "button": {
          "name": "Button",
          "becomes": "A capsule on the run: fully rounded ends, a thin trim line, the leading action filled.",
          "anatomy": [
            "999px radius, both ends round",
            "1px trim line in steel",
            "label in widened sans capitals",
            "the lead action filled petrol"
          ],
          "tokens": {
            "radius": "999px",
            "border": "1px solid #5A646E",
            "background": "#F4EDDF",
            "lead-background": "#155263",
            "lead-text": "#F4EDDF",
            "height": "44px"
          },
          "states": {
            "default": "Pale ground, steel trim line, ink label.",
            "hover": "Trim and label turn petrol.",
            "focus": "3px petrol outline, 3px off, following the capsule.",
            "active": "Fills petrol; label turns to the ground colour.",
            "disabled": "Dashed trim line, label in secondary ink."
          },
          "accessibility": [
            "At least 44px tall.",
            "Label 7.5:1 on the filled capsule, 12.6:1 on the ground.",
            "Disabled is a dashed line, not only a fade."
          ],
          "values": [
            {
              "rule": "Round both ends of every button fully.",
              "basis": "translation",
              "cites": [
                "claim:kcc:interface-1"
              ],
              "because": "Rounded corners and curved surfaces are the style's defining edge; on screen the radius runs out to a capsule."
            },
            {
              "rule": "Draw the edge as a thin metal line, not a shadow or a tinted box.",
              "basis": "translation",
              "cites": [
                "claim:kcc:interface-2"
              ],
              "because": "Borders are metal bands and trim."
            },
            {
              "rule": "Fill only the leading action; the others follow it to the right, outlined.",
              "basis": "translation",
              "cites": [
                "token_rule:hierarchy-13"
              ],
              "because": "Rank is a position along the run; fill marks the lead without making it bigger."
            }
          ]
        },
        "card": {
          "name": "Card",
          "becomes": "A rounded panel with a trim line, its content leading from the left edge, never centred.",
          "anatomy": [
            "trim line all round",
            "radius larger at the leading (left) corners",
            "title in widened capitals",
            "one line of body"
          ],
          "tokens": {
            "border": "1px solid #5A646E",
            "radius": "1.6rem 1rem 1rem 1.6rem",
            "padding": "1.2rem",
            "background": "#F4EDDF"
          },
          "states": {
            "default": "Steel trim.",
            "hover": "Trim turns petrol and doubles on the inside.",
            "focus": "3px petrol outline."
          },
          "accessibility": [
            "The whole card is one link.",
            "Cards read left to right in source order, which is also their rank."
          ],
          "values": [
            {
              "rule": "Round every corner, with the leading corners rounder than the trailing ones.",
              "basis": "translation",
              "cites": [
                "claim:kcc:interface-1"
              ],
              "because": "The rounded, prow-like end reads forward; radius is the defining edge."
            },
            {
              "rule": "Set cards in one horizontal run; the first on the left leads.",
              "basis": "translation",
              "cites": [
                "token_rule:sm-r2",
                "token_rule:hierarchy-13"
              ],
              "because": "Horizontal continuity dominates, and rank is a position along the run."
            }
          ]
        },
        "input": {
          "name": "Input",
          "becomes": "A capsule field with its label above it, ruled by the same trim line as the button.",
          "anatomy": [
            "999px radius",
            "1px steel trim",
            "label above in small capitals",
            "error as a sentence below"
          ],
          "tokens": {
            "radius": "999px",
            "border": "1px solid #5A646E",
            "height": "44px",
            "padding": "0 1.2rem"
          },
          "states": {
            "default": "Steel trim on the ground.",
            "focus": "Petrol trim and a 3px petrol outline.",
            "error": "Petrol double trim; the message begins \"Error:\".",
            "disabled": "Dashed trim."
          },
          "accessibility": [
            "The label is real text above the field.",
            "Errors are words, not colour alone."
          ],
          "values": [
            {
              "rule": "Give fields the button's capsule and trim line.",
              "basis": "translation",
              "cites": [
                "claim:kcc:interface-1",
                "claim:kcc:interface-2"
              ],
              "because": "One edge treatment on every control: rounded, bordered by metal trim."
            }
          ]
        },
        "navigation": {
          "name": "Navigation",
          "becomes": "Capsule links seated on a three-line speed course; the current page is the filled one, and the order runs left to right.",
          "anatomy": [
            "three parallel lines, the middle heavier, full width",
            "capsule links riding the lines",
            "current page filled petrol"
          ],
          "tokens": {
            "course": "3px / 6px / 3px, 7px apart",
            "radius": "999px",
            "current": "#155263"
          },
          "states": {
            "default": "Outlined capsules on the course.",
            "hover": "Trim and label turn petrol.",
            "focus": "3px petrol outline.",
            "current": "Filled petrol, aria-current=\"page\"."
          },
          "accessibility": [
            "aria-current marks the current page, not colour alone.",
            "The course is decoration, hidden from assistive technology."
          ],
          "values": [
            {
              "rule": "Seat the navigation on a band of parallel horizontal lines.",
              "basis": "translation",
              "cites": [
                "claim:kcc:motif-1"
              ],
              "because": "Speed lines, bands of horizontal piping or grooves, are the recurring mark; here they carry the menu."
            },
            {
              "rule": "Order the links by importance from the left.",
              "basis": "translation",
              "cites": [
                "token_rule:hierarchy-13"
              ],
              "because": "Rank by position along the horizontal run."
            }
          ]
        }
      },
      "motion": {
        "spec": {
          "durations": {
            "state": "160ms",
            "travel": "19s"
          },
          "easing": {
            "state": "linear",
            "travel": "linear"
          },
          "transforms": "translateX only. Nothing rises, scales or rotates.",
          "entrance": "None. Content is there at load.",
          "hover": "Colour change on trim and label, linear, 160ms.",
          "reducedMotion": "Everything holds still; a travelling element rests at its designed position."
        },
        "rules": [
          {
            "rule": "Motion is represented, not performed: horizontal lines and rounded forms give the impression of speed.",
            "basis": "translation",
            "cites": [
              "claim:kcc:motion-1"
            ],
            "because": "The cited rule belongs to the Aesthetic's own medium; applying it to a screen component or motion is our translation."
          },
          {
            "rule": "If anything moves, it travels horizontally at constant velocity. Nothing rises, nothing steps.",
            "basis": "translation",
            "cites": [
              "token_rule:motion-14"
            ],
            "because": "The cited rule belongs to the Aesthetic's own medium; applying it to a screen component or motion is our translation."
          },
          {
            "rule": "Let at most one element travel, and only sideways.",
            "basis": "translation",
            "cites": [
              "claim:kcc:motion-1",
              "token_rule:motion-14"
            ],
            "because": "Motion is mostly drawn; one constant-velocity traveller is the page's whole budget."
          },
          {
            "rule": "Animated or moving light is not documented.",
            "basis": "not_recorded",
            "cites": [
              "claim:kcc:motion-2"
            ],
            "guidance": "Do not animate glows or signs; the research found electric light built in, not moving.",
            "silence": "source"
          }
        ]
      },
      "notRecorded": [
        {
          "category": "color",
          "what": "A palette beyond the wall colour",
          "why": "The research gives white or pale stucco and metal trim; ink and accent are ours."
        },
        {
          "category": "typography",
          "what": "Body type",
          "why": "Only storefront lettering is documented."
        },
        {
          "category": "gridLayout",
          "what": "Density",
          "why": "Not specified by the source."
        },
        {
          "category": "imagery",
          "what": "Photography or illustration style",
          "why": "The record holds rendered chrome and the documented marks only."
        },
        {
          "category": "components",
          "what": "Any interface convention of the period",
          "why": "The subject is buildings and objects; all four components are translations."
        },
        {
          "category": "motion",
          "what": "Animated light",
          "why": "No opened source documents it."
        }
      ],
      "silence": {
        "color": "source",
        "typography": "source",
        "gridLayout": "source",
        "shapeGeometry": "source",
        "imagery": "source",
        "components": "source",
        "motion": "source"
      },
      "uiNote": "The record documents interface conventions for Streamline Moderne. These four components are contemporary builds on those conventions, not historical artefacts."
    }
  }
}