Create a 16:9 amateur smartphone-style photo of an open notebook lying flat on a casual desk, filled with handwritten notes in black ballpoint pen. The handwriting is casual and slightly messy, like personal notes, with natural imperfections, crossed-out words, underlined headings, bullet points, and uneven spacing. Shoot from slightly above with natural daylight from a window, no flash, and realistic handheld framing. Keep the desk setting ordinary and unstaged, with paper texture, page crease, and soft shadows. Use fictional or generic note content only; avoid real product names, real company names, private personal information, passwords, phone numbers, email addresses, QR codes, URLs, legal claims, and readable confidential business details.
Output aspect ratio: 16:9.