logotipo manual: hoja de paleta y guía editorial

Card grid infographic titled "Logotype Manual — Color Palette Sheet". 8 uniform cards in a clean editorial grid, publication-grade layout, tech futuristic mood, minimal monochrome palette. Each card contains a clear central icon/diagram, a name in English, and a one-line description in English. Include cards for: Primary Black swatch with hex code, Soft White swatch with hex code, Mid Gray swatch with hex code, Accent Silver swatch with hex code, Heading Type specimen showing hierarchy H1, Subheading Type specimen showing hierarchy H2, Body Type specimen showing body text hierarchy, Logo Placement Rules diagram, Brand Voice Notes summary. Use a generic placeholder brand name and abstract logo mark, no real brand logos. Real-looking sans and serif style specimens without copyrighted font names. Clean margins, precise alignment, thin rule lines, subtle futuristic interface details, monochrome editorial poster aesthetic. Visual search intent should suggest a Spanish logotipo manual style sheet, but all visible text remains in English only. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no real brand logos, no watermarks Generic placeholder brand name + logo mark. Type specimens use real-looking sans / serif lookalike (no copyrighted font names rendered literally).