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{
  "type": "Japanese infographic timeline poster",
  "language": "Japanese",
  "canvas": "landscape 4:3 educational chart with a clean white background, red grid lines, bold red title bar, small motorcycle illustrations, and dense Japanese annotations",
  "headline": "[④ 日本のバイクメーカー・名車と見た目系カスタム文化 年表]",
  "subtitle": "名車・メーカーの主な出来事（上段）と、見た目のカスタム・ドレスアップ文化（下段）を年表で比較",
  "layout": {
    "top_timeline": {
      "position": "upper two thirds",
      "description": "matrix comparing 4 Japanese motorcycle manufacturers across 8 decade columns, with each cell showing a year, model name, and small detailed side-view motorcycle illustration",
      "columns_count": 8,
      "columns": [
        "1950",
        "1960",
        "1970",
        "1980",
        "1990",
        "2000",
        "2010",
        "2020"
      ],
      "rows_count": 4,
      "rows": [
        {
          "maker": "HONDA",
          "logo_style": "red wing logo and HONDA text",
          "entries": [
            "1958 スーパーカブ C100",
            "1969 モンキー Z50M",
            "1971 CB400T ホークⅡ",
            "1981 CBX400F",
            "1992 モンキーR",
            "2008 モンキー・カブの趣味性表現",
            "2010 custom-style small bike illustration",
            "2021 CT125 ハンターカブ"
          ]
        },
        {
          "maker": "YAMAHA",
          "logo_style": "blue tuning-fork circle logo and YAMAHA text",
          "entries": [
            "1968 メイト",
            "1974 DT250",
            "1980 XJ400",
            "1983 RZ250 (4L3)",
            "1995 マジェスティ125",
            "2005 マジェスティ (SG20J)",
            "2023 XSR125"
          ]
        },
        {
          "maker": "SUZUKI",
          "logo_style": "red S logo and SUZUKI text",
          "entries": [
            "1971 バンバン90",
            "1976 GS400",
            "1982 GSX400E",
            "1985 RG250Γ",
            "2000 スカイウェイブ（初代）",
            "2017 SV650X",
            "2023 GSX-S125"
          ]
        },
        {
          "maker": "Kawasaki",
          "logo_style": "green Kawasaki mark and text",
          "entries": [
            "1969 500SS",
            "1976 KH400",
            "1981 Z400FX",
            "1983 GPz400F",
            "1998 W650",
            "2003 エストレヤ",
            "2022 250RS/250TR系（ネオクラ系譜）"
          ]
        }
      ]
    },
    "bottom_culture_timeline": {
      "position": "lower third",
      "section_title": "見た目系・ドレスアップ文化の流れ（下段）",
      "description": "7 horizontal culture rows with pale colored category labels on the left and pink arrows showing approximate periods of popularity",
      "rows": [
        {
          "label": "暴走族／族車文化",
          "icon": "small aggressive motorcycle emblem",
          "timeline": "1970s〜成立 → 1980s〜全盛 → 1990s〜減少へ → 2000s〜旧車會へ移行"
        },
        {
          "label": "旧車會文化",
          "icon": "rising-sun style icon",
          "timeline": "1980s後半〜旧車に暴走族風 → 1990s〜大規模集団走行が可視化 → 2000s〜イベント・ミーティング化"
        },
        {
          "label": "チョッパー／ボバー",
          "icon": "chopper motorcycle silhouette",
          "timeline": "1960s〜アメリカンスタイル流入 → 1970s〜チョッパー志向 → 1990s〜ボバー再評価 → 2000s〜カスタムの主流に"
        },
        {
          "label": "アメリカン／クルーザー",
          "icon": "cruiser motorcycle silhouette",
          "timeline": "1980s〜ドラッグスターなど登場 → 1990s〜アメリカンブーム → 2000s〜カスタム化進む"
        },
        {
          "label": "ビッグスクーターカスタム",
          "icon": "large scooter silhouette",
          "timeline": "2000s〜ビッグスクーターブーム → 2000s中盤〜オーディオ・メッキ・エアロ → 2010s〜ラグジュアリー化・多様化"
        },
        {
          "label": "カブカスタム／ミニバイクカスタム",
          "icon": "green small bike silhouette",
          "timeline": "1990s〜カブ・モンキー系カスタム → 2000s〜4ミニカスタムイベント増加 → 2010s〜キャンプ・アウトドア系へ"
        },
        {
          "label": "ネオクラシック／レトロ",
          "icon": "red helmet icon",
          "timeline": "2000s〜SR・W・エストレヤ人気 → 2010s〜レトロ・ネオクラシック人気"
        }
      ]
    },
    "right_sidebar": {
      "position": "right edge",
      "title": "豆知識・雑学",
      "style": "vertical column with red bullet dots, dotted separators, and 8 small motorcycle or emblem illustrations",
      "facts": [
        "カブは1958年登場。",
        "実用車カブは後に趣味車化。",
        "暴走族人数のピークは1982年。",
        "族車は見た目の記号が強い。",
        "旧車會は旧型二輪の集団文化。",
        "Z2・CB系は旧車文化の中心。",
        "ビッグスクーターは2000年代に。",
        "TW系は街乗り見た目文化。"
      ]
    },
    "footer": {
      "legend": [
        "黒・グレー＝名車・出来事（メーカーの主な出来事・名車）",
        "赤・ピンク＝文化・カスタムの広がり（おおよその期間）"
      ],
      "note": "※年代区分はおおよその目安です。"
    }
  },
  "visual_style": {
    "typography": "bold Japanese sans-serif, red headings, compact black labels, clear chart hierarchy",
    "colors": "dominant red and white, pale pink arrows, light pastel category strips, maker logos in brand colors",
    "illustration_style": "small crisp semi-realistic side-view motorcycle drawings with shadows, varied colors and eras, infographic clarity",
    "rendering": "high-resolution print-ready poster, sharp legible text, neat grid alignment, educational magazine style"
  }
}