vextris, cinematic film style, IMAX 70mm, cinematic still, retrofuturist sci-fi, ceremonial guard tableau, two sci-fi guards in white flowing robes with masked humanoid faces, enormous translucent bulb helmets mounted in ornate mechanical filigree frames, each holding a black futuristic rifle, standing inside a decayed rococo interior, large arched opening revealing a misty forest beyond, formal symmetrical spacing, soft cold daylight, desaturated teal-gray palette, cold cyan cast, deep blacks, muted highlights, subtle warm metal patina, analog film grain, atmospheric haze, worn ornate-industrial textures, grounded photorealism, aristocratic retrofuturist tension