Canva membrete tech estilo jurídico en blanco y negro

Print-ready letterhead template for canva membrete (tech / SaaS). Company brief: canva membrete. Style: academic / law-firm, black + warm white palette. Header band with placeholder logo + company name. Footer strip with placeholder address, phone, email, website, registration number. Watermark: subtle logo mark. Generous text area for body copy. A4 portrait, no watermarks (other than chosen design). No real registration numbers or addresses — use clean placeholders. No fake government seals. Target search intent (rendered visually, no on-image text): "canva membrete" (es).