{
  "schema_version": 1,
  "revision": "5.0-legible-plaques",
  "units": "mm",
  "status": "digital_prototype_physical_fit_unverified",
  "interface": {
    "pitch": 8.0,
    "brick_height": 9.6,
    "plate_height": 3.2,
    "body_gap": 0.2,
    "reference_stud_diameter": 4.8,
    "stud_diameter_correction": 0.0,
    "stud_height": 1.8,
    "stud_lead_in": 0.25,
    "female_radial_clearance": 0.04,
    "socket_lead_in": 0.2,
    "socket_lead_in_height": 0.3,
    "roof": 1.6,
    "thin_plate_roof": 1.0,
    "tube_inner_diameter": 3.2,
    "roof_support_rib_width": 1.2
  },
  "fit_candidates": {
    "male_diameter_corrections": [-0.1, 0.0, 0.1],
    "female_radial_clearances": [-0.04, 0.0, 0.04, 0.08, 0.12],
    "test_order": "loosest first; test commercial-to-printed, printed-to-commercial, then printed-to-printed"
  },
  "message": {
    "interface_id": "BASE-FRONT-NP3",
    "lines": ["Same icon, New adventures", "github.com/USER"],
    "height": 40.0,
    "thickness": 2.4,
    "relief": 1.2,
    "minimum_straight_stroke": 0.84,
    "font": "resources/fonts/barlow-condensed/BarlowCondensed-Black.ttf",
    "bold_font": "resources/fonts/barlow-condensed/BarlowCondensed-Bold.ttf",
    "line_bottoms": [22.0, 7.0],
    "printability": {
      "targets": {
        "counter_central_half_chord": 1.02,
        "e_exit_channel": 1.1,
        "adjacent_glyph_clearance": 1.05
      },
      "sample_deflection_mm": 0.002,
      "actual_gap_tolerance_mm": 0.006,
      "aperture_grid_mm": 0.01,
      "aperture_uncertainty_mm": 0.03,
      "not_a_physical_qualification": true
    },
    "side_taper": 2.0,
    "rear_vertical_margin": 1.2,
    "rear_flat_thickness": 0.8,
    "clearance": 0.2,
    "back_y": 3.3,
    "bottom_z": 4.0,
    "front_beam_depth": 5.6,
    "base_color": "black",
    "letter_color": "white",
    "base_courses": 5,
    "x": 4.0,
    "retention": "Vertical dovetail slide; two removable stud-mounted top keepers.",
    "legacy_variant_distribution": "Unselected individual variant retained privately, not distributed."
  },
  "logo": {
    "outline": "resources/github-mark-relief.json",
    "disc_height": 0.4,
    "relief": 0.8,
    "back_y": 3.7,
    "base_color": "black",
    "relief_color": "white",
    "finish_color_change_z": 2.8,
    "provenance": "Printable relief derived from user-provided artwork; no original raster distributed."
  },
  "colors": {
    "black": {"hex": "#171d28", "name_ja": "ブラック"},
    "cyan": {"hex": "#21bdd6", "name_ja": "シアン"},
    "magenta": {"hex": "#c42eaa", "name_ja": "マゼンタ"},
    "green": {"hex": "#42df83", "name_ja": "グリーン"},
    "white": {"hex": "#f5f3eb", "name_ja": "ホワイト"}
  },
  "presentation": {
    "exploded_course_gap_mm": 20.0,
    "keeper_release_mm": 6.0,
    "keeper_forward_mm": 20.0,
    "plaque_release_mm": 45.0,
    "plaque_front_clearance_mm": 14.0,
    "plaque_display_drop_mm": 56.0,
    "note": "Display-only centered vertical separation; not a physical disassembly simulation."
  },
  "variants": [
    {
      "id": "A",
      "name": "MINI RELIEF",
      "name_ja": "薄く、小さく飾る",
      "target_mm": [144, 64, 188.4],
      "initial_target_mm": [144, 64, 150],
      "base_studs": [18, 8],
      "base_segments_x": [18],
      "message_width": 102.0,
      "text_sizes": [3.5, 2.8],
      "text_heights": [10.0, 10.0],
      "main_lettering_goals": {
        "counter_central_half_chord": 0.9,
        "e_exit_channel": 0.95,
        "adjacent_glyph_clearance": 0.8
      },
      "logo_x": 108.0,
      "logo_module_width": 32.0,
      "logo_diameter": 28.0,
      "body_width": 14,
      "body_courses": 14,
      "bottom_inset": 3,
      "goggle_bottom": 7,
      "eye_courses": [3, 5],
      "eye_columns": [5, 8],
      "face_y": [3, 5],
      "goggle_y": [2, 5],
      "headset_y": [2, 5],
      "chin_y": [3, 5],
      "crest_width": 4,
      "crest_height": 3.2,
      "description_ja": "16 mm厚の顔と浅いレリーフ。小さな机にも置きやすい最小構成。"
    },
    {
      "id": "B",
      "name": "DESK CLASSIC",
      "name_ja": "輪郭と厚みの標準型",
      "target_mm": [192, 80, 238.4],
      "initial_target_mm": [192, 80, 200],
      "base_studs": [24, 10],
      "base_segments_x": [24],
      "message_width": 142.0,
      "text_sizes": [5.0, 3.2],
      "text_heights": [12.0, 10.0],
      "logo_x": 148.0,
      "logo_module_width": 40.0,
      "logo_diameter": 36.0,
      "body_width": 20,
      "body_courses": 19,
      "bottom_inset": 5,
      "goggle_bottom": 9,
      "eye_courses": [4, 7],
      "eye_columns": [7, 12],
      "face_y": [3, 7],
      "goggle_y": [2, 7],
      "headset_y": [2, 8],
      "chin_y": [3, 7],
      "crest_width": 8,
      "crest_height": 6.4,
      "description_ja": "32 mm厚の顔、段差のあるゴーグル。写真の印象に近い推奨標準型。"
    },
    {
      "id": "C",
      "name": "DISPLAY SCULPT",
      "name_ja": "横顔まで立体に",
      "target_mm": [240, 112, 288.4],
      "initial_target_mm": [240, 112, 250],
      "base_studs": [30, 14],
      "base_segments_x": [15, 15],
      "message_width": 182.0,
      "text_sizes": [6.5, 3.6],
      "text_heights": [14.5, 10.0],
      "logo_x": 188.0,
      "logo_module_width": 48.0,
      "logo_diameter": 40.0,
      "body_width": 26,
      "body_courses": 24,
      "bottom_inset": 6,
      "goggle_bottom": 12,
      "eye_courses": [6, 10],
      "eye_columns": [9, 16],
      "face_y": [5, 11],
      "goggle_y": [3, 11],
      "headset_y": [2, 12],
      "chin_y": [4, 11],
      "crest_width": 10,
      "crest_height": 6.4,
      "description_ja": "48 mm厚の顔、80 mm厚の側面。ゴーグルも前に張り出す立体展示型。"
    }
  ]
}