abstract background for Korean cultural heritage conservation science presentation, inspired by conservation of traditional artifacts and paintings, minimal and modern composition, clean layered surfaces suggesting paper, silk, and aged materials, subtle restoration traces and material textures, no text, no people color palette strictly based on deep navy #37487C, soft lime #D2DC79, and pale ivory #EDF0D3, smooth gradients and soft blending, calm and professional academic mood very minimal scientific elements, only faint abstract hints of conservation tools (light reflections, glass surfaces), almost no machinery, focus on materials and preservation atmosphere flat design meets soft realism, balanced composition with generous negative space for presentation layout, high resolution, refined and elegant, not painterly, not ink wash style --ar 16:9 --v 6 --style raw --q 2