Transform this 3D mockup into a flat, 2D printable digital file. Remove the gold pens and the marble background completely. Keep ONLY the rectangular gift certificate design. Keep the exact same text in Russian: 'ПОДАРОЧНЫЙ СЕРТИФИКАТ', 'Скидка 10%', 'Кератиновое выпрямление, ботокс, восстановление волос', 'Срок действия: 1 июня 2027 г.', 'Запись: +7 962 868 47 80. Мастер Алена'. Maintain the dark graphite background and the elegant gold foil hair wave patterns on the corners. The final image should be a flat, straight-on top-down view of the certificate, ready for printing, with no external objects or perspective distortion.
