A colossal ring world megacity orbiting a dying red giant star, massive titanium orbital rings with kilometer-tall spires and rotating habitat cylinders, solar sail arrays harvesting dim crimson light, sleek inter-ring shuttles navigating between glittering torus districts, floating archipelago gardens with engineered bioluminescent flora, deep burnt sienna and electric amber palette with stellar winds illuminating impossible orbital engineering, epic diagonal composition from habitable ring edge with tiny silhouetted space engineers on observation platforms emphasizes impossible stellar architectural scale, photorealistic, cinematic depth of field