{"type":"cinematic historical podcast cover and documentary thumbnail","aspect_ratio":"16:9 widescreen","language":"Chinese visible typography","style":"epic dark-gold historical documentary design, premium podcast cover, photorealistic composite, ancient Chinese imperial drama mixed with scientific genetics infographic, high contrast chiaroscuro, teal blue versus amber gold color grading, smoky atmosphere, subtle parchment texture, engraved map lines, elegant serif Chinese title typography","main_title":"{argument name=\"main title\" default=\"晋王的基因地图：李克用与沙陀之谜\"}","subtitle":"{argument name=\"subtitle\" default=\"古DNA如何重绘晚唐沙陀的来源与混合历史\"}","central_concept":"A grand visual explanation of an ancient DNA study about Li Keyong and the Shatuo people, combining Tang dynasty frontier politics, migration routes, burial archaeology, and genetic ancestry proportions.","layout":{"background":"split historical landscape: left half is cold blue northeastern grassland with faint mountains, horse caravans, map grid lines and glowing route traces; right half is warm golden western grassland and ruined fortress landscape with a great wall, watchtower, cave tombs, stone statues and desert haze; the middle horizon glows where the two regions converge","foreground_subject":{"position":"far left occupying about one quarter of the canvas","description":"a powerful late Tang / Jin prince warlord in ornate dark embroidered robe, fur mantle, jeweled belt, ceremonial hair crown and gold accessories, standing in three-quarter pose; face intentionally obscured by a plain rectangular blur block","side_name_plate":"{argument name=\"left name plate text\" default=\"李克用 晋沙陀领袖\"}"},"top_title":{"position":"upper center to upper right","appearance":"very large embossed metallic gold Chinese characters with subtle shadow and weathered texture","text":"{argument name=\"main title\" default=\"晋王的基因地图：李克用与沙陀之谜\"}"},"subtitle_band":{"position":"under main title","appearance":"thin horizontal divider lines on both sides, smaller white-gold Chinese text","text":"{argument name=\"subtitle\" default=\"古DNA如何重绘晚唐沙陀的来源与混合历史\"}"},"labeled_regions":{"count":2,"items":[{"position":"left-middle","label":"东部草原\n东北亚","visual":"blue map zone with glowing migration dots and route lines"},{"position":"right-middle","label":"西部草原\n欧亚大陆腹地","visual":"orange map zone with caravan silhouettes and desert fortress ruins"}]},"genetics_infographic":{"position":"lower center","description":"a luminous vertical DNA double helix at the center, acting as the meeting point of the two ancestry streams; orange and blue particle clouds merge around it","center_label":"汇合·融合","charts":{"count":2,"items":[{"position":"lower-left of center","type":"blue donut chart","value":"53.4%","label":"古代东北亚祖源"},{"position":"lower-right of center","type":"gold donut chart","value":"46.6%","label":"西部草原祖源"}]},"bottom_statement":{"position":"bottom center inside a decorative gold-outlined plaque","text":"沙陀并非单一血缘共同体"}},"right_vertical_label":{"position":"right edge beside tomb ruins","text":"{argument name=\"right vertical label text\" default=\"山西晋侯墓葬群\"}"},"decorative_science_elements":{"count":5,"items":["faint DNA helix diagram in the upper right","handwritten Chinese annotation marks across the sky","transparent scientific chart grid behind the landscape","thin glowing migration paths crossing the map","small scatterplot-style genetic data points near the bottom center"]},"composition_notes":"Keep all text legible, balanced for a YouTube/podcast cover at thumbnail size. Use cinematic depth, realistic lighting, ancient manuscript details, golden engraved borders, and an authoritative historical mystery tone. Avoid modern UI chrome, avoid cartoon style, avoid clutter over the main title."}