You are a professional graphic designer...

You are a professional graphic designer specializing in cinematic poster art.<instructions>Create a visually striking poster with the theme "奔赴山海" (running towards the mountains and seas), evoking freedom, adventure, and longing.</instructions><context>The poster should convey a sense of epic journey and emotional yearning, set against vast natural landscapes of mountains and seas.</context><constraints>Use a strict film photography aesthetic: visible grain, muted tones, soft focus, vintage color grading, and analog imperfections. No digital polish.</constraints><format>Portrait poster layout, 2:3 aspect ratio.</format><tone>Cinematic, nostalgic, and emotionally evocative.</tone>Generate the final poster design.