modify exclusively the vertical structural columns visible in the scene do not modify hull color blue surfaces decking glazing furniture sofas and cushions bamboo plant coffee table loose objects lighting sky ocean shadows camera position perspective proportions of any element keep the global lighting color grading and atmosphere identical intervention area only the vertical columns supporting the upper structure replace the current column finish with a refined hainan huanghuali wood surface featuring a very subtle engraved li brocade pattern column specifications maintain exact geometry thickness height and structural proportions do not alter alignment or spacing keep the structural reading identical material light huanghuali wood tone warm honey beige visible fine natural grain satin finish not glossy soft light absorption pattern li brocade motif extremely subtle tone on tone engraved very shallow carving depth no dark inlay no printed texture no high contrast no ornamental exaggeration fine precise artisanal incision the pattern must feel integrated into the wood surface not applied on top no additional decorative frames no bronze borders no changes to adjacent surfaces the result must feel architectural refined minimal culturally grounded contemporary luxurious but restrained all other elements in the render must remain pixel identical to the original