色づく入り江

Use case: stylized-concept. Asset type: original downloadable iPhone wallpaper and visual preference comparison. Output a single portrait image, aspect ratio 9:19.5, ideally 1440 x 3120. Full bleed artwork only, no frame. The TOP 45% must be a uniform empty field with no subject, horizon, lettering or symbols, reserved for a lock-screen clock. All visual interest stays in the LOWER HALF. No text, numbers, watermark, signature, logos, characters, or UI. Scene: an imagined coastal inlet painted in matte gouache, sweeping curved shoreline starting at the lower right and curving to center at y65%, broad turquoise sea shape at lower left, two coral-orange rounded headlands at lower right. Small pale ivory wave marks limited to the bottom fifth. Horizon at y60%, a uniformly pale warm ivory sky above. Bold beautifully balanced saturated turquoise and coral-orange, bright summer palette, simplified hand-painted shapes, fine natural pigment texture restricted to the landscape. No sun, no clouds, no boats, no buildings, no people, no palms. Elegant contemporary landscape illustration, vivid and inviting.