4-Panel Japanese Advertising Grid

{
  "type": "2x2 grid of Japanese advertising posters",
  "layout": {
    "format": "2x2 grid",
    "panels": [
      {
        "position": "top-left",
        "theme": "skincare brand",
        "visual": "Close-up of a young Japanese woman with glowing dewy skin and short black hair. 3 minimalist white skincare bottles in the bottom left.",
        "text_elements": {
          "headline": "{argument name=\"skincare headline\" default=\"素肌が、いちばんのメイクになる。\"}",
          "brand": "urala",
          "subtext": ["肌本来の力を引き出す 新・スキンケアシリーズ誕生", "4.25 NEW DEBUT", "うららかに、わたしらしく。"]
        }
      },
      {
        "position": "top-right",
        "theme": "cafe promotion",
        "visual": "A slice of thick toast topped with strawberry jam and butter on a plate, next to a mug of black coffee on a wooden table near a window.",
        "text_elements": {
          "headline": "{argument name=\"cafe headline\" default=\"今日も、いい日。\"}",
          "brand": "morino cafe",
          "subtext": ["森のそばの小さなカフェ", "こだわりのコーヒーと、焼きたてのパンでほっとひと息しませんか？", "季節限定 いちごのジャムトースト始めました"]
        }
      },
      {
        "position": "bottom-left",
        "theme": "personal gym",
        "visual": "A fit Japanese woman in a black sports bra with a ponytail, looking upward with determination in a purple-lit gym.",
        "text_elements": {
          "headline": "{argument name=\"gym headline\" default=\"わたしを超えていけ。\"}",
          "brand": "BEYOND LIMIT PERSONAL GYM",
          "subtext": ["今こそ、理想の自分へ", "まずは体験から！ 体験トレーニング 60分 ¥2,200(税込)"]
        }
      },
      {
        "position": "bottom-right",
        "theme": "resort destination",
        "visual": "A serene view of a bright blue ocean and sky from a modern white balcony with a small sofa and potted plant.",
        "text_elements": {
          "headline": "{argument name=\"resort headline\" default=\"まだ見ぬ景色に、出会う旅。\"}",
          "brand": "UMI to SORA RESORT",
          "subtext": ["心がほどける、特別な時間をあなたに。", "期間限定 夏のご予約キャンペーン", "{argument name=\"resort discount\" default=\"最大20%OFF\"}"]
        }
      }
    ]
  }
}