Showa-style calendar design prompt

design_spec: dimensions: aspect_ratio: "3:4" layout: "Grid System (7 columns x 4 rows)" background_color: "#FFFFFF" header_section: month_number: text: "2" font_weight: "Bold" color: "#0055A4" alignment: "Center Top" month_name_en: text: "FEBRUARY" position: "Below Month Number" year: text: "2026" position: "Near Month Name" sub_calendars: description: "Small thumbnails of Jan 2026 and Mar 2026" grid_structure: columns: 7 (Sunday to Saturday) rows: 4 header_row_style: "Rainbow Color Block" column_colors: Sun: { bg: "#CC0000", text: "White" } Mon: { bg: "#333333", text: "White" } Tue: { bg: "#E69F00", text: "White" } Wed: { bg: "#009E73", text: "White" } Thu: { bg: "#0072B2", text: "White" } Fri: { bg: "#56B4E9", text: "White" } Sat: { bg: "#000080", text: "White" } cell_design: layout: "Vertical Split" height_modification: "Expanded Height (150% of standard)" top_half: content: "Date Number (Large)" alignment: "Center" bottom_half: content: "Memo Space" style: "5 Dotted Guide Lines (Light Grey)" typographical_rules: sundays_and_holidays: "Red Text" saturdays: "Blue Text" weekdays: "Black Text" data_mapping_feb_2026: # 2026 Feb is a non-leap year starting on Sunday. # Total days: 28. Exact 4 weeks structure. # Holidays: Feb 11 (National Foundation Day), Feb 23 (Emperor's Birthday) row_1: - { day: "Sun", date: "1", type: "sunday" } - { day: "Mon", date: "2", type: "weekday" } - { day: "Tue", date: "3", type: "weekday" } - { day: "Wed", date: "4", type: "weekday" } - { day: "Thu", date: "5", type: "weekday" } - { day: "Fri", date: "6", type: "weekday" } - { day: "Sat", date: "7", type: "saturday" } row_2: - { day: "Sun", date: "8", type: "sunday" } - { day: "Mon", date: "9", type: "weekday" } - { day: "Tue", date: "10", type: "weekday" } - { day: "Wed", date: "11", type: "holiday", label: "建国記念の日" } - { day: "Thu", date: "12", type: "weekday" } - { day: "Fri", date: "13", type: "weekday" } - { day: "Sat", date: "14", type: "saturday" } row_3: - { day: "Sun", date: "15", type: "sunday" } - { day: "Mon", date: "16", type: "weekday" } - { day: "Tue", date: "17", type: "weekday" } - { day: "Wed", date: "18", type: "weekday" } - { day: "Thu", date: "19", type: "weekday" } - { day: "Fri", date: "20", type: "weekday" } - { day: "Sat", date: "21", type: "saturday" } row_4: - { day: "Sun", date: "22", type: "sunday" } - { day: "Mon", date: "23", type: "holiday", label: "天皇誕生日" } - { day: "Tue", date: "24", type: "weekday" } - { day: "Wed", date: "25", type: "weekday" } - { day: "Thu", date: "26", type: "weekday" } - { day: "Fri", date: "27", type: "weekday" } - { day: "Sat", date: "28", type: "saturday" } output_instructions: - "Generate a grid with exactly 4 rows." - "Distribute vertical space evenly, making each day cell significantly taller than standard." - "Increase the number of memo guide lines in each cell to utilizing the extra vertical space." - "Color logic: 1(Sun), 8(Sun), 11(Holiday-Wed), 15(Sun), 22(Sun), 23(Holiday-Mon) -> RED." - "Color logic: 7, 14, 21, 28 -> BLUE."