def build_ppt(sections, images_map, templates):
    prs = Presentation()
    prs.slide_width, prs.slide_height = Inches(8.27), Inches(11.69)  # A4

    # 커버 슬라이드
    slide = prs.slides.add_slide(prs.slide_layouts[6])
    tb = slide.shapes.add_textbox(Inches(1), Inches(2), Inches(6.27), Inches(2))
    p = tb.text_frame.paragraphs[0]
    p.text = "🚀 자동 보고서"
    p.font.size = Pt(26); p.font.bold = True

    # 본문 슬라이드
    for sec in sections:
        slide = prs.slides.add_slide(prs.slide_layouts[6]