深邃藍色至明亮蔚藍的柔和漸層背景，右下角帶有柔和光暈

提示詞

Create a simple abstract full-frame gradient wallpaper in a 16:9 landscape canvas. Use a smooth, soft-focus blue color field with no text, no objects, no visible shapes, and no borders. The composition should transition from very dark navy and near-black in the upper-left corner into saturated cobalt and royal blue across the center, then into brighter azure and electric blue toward the right side, with a pale icy blue glow near the lower-right area. Keep the gradient organic and slightly uneven, like a blurred luminous surface, with subtle diagonal movement from dark upper left to bright lower right. Use high resolution, clean digital rendering, minimal noise, and a polished modern tech aesthetic. Main palette: near-black navy, deep cobalt blue, and pale icy azure.