文字のないハロウィンのマンダラ塗り絵で、黒い輪郭線のゴシックで上品なスタイルです。円の中にツタとカエデの葉を添えたカボチャが描かれ、周りを三日月、クモの巣、コウモリが白地に囲んでいます。マンダラの周りの余白に名前、挨拶、パーティーの日付を加えて、自分だけの印刷用シートに作り変えられます。

Create a portrait 3:4 printable adult Halloween mandala coloring page on a pure white background. Render a single intricate, perfectly centered radial composition in crisp pure-black contour line art. At the center, draw a large, unmistakable pumpkin with a curved stem, carefully segmented ribs, curling leaves, and small ornamental details. Surround it with concentric mandala rings: repeat outlined bats, crescent moons, and spiderweb medallions evenly around the circle, alternating the motifs with delicate looping vines, dots, and petal-like forms. Maintain clear eightfold radial symmetry and a legible central pumpkin. Use fine, precise, consistent-weight black outlines with plenty of enclosed regions suitable for coloring with pencils or fine markers; keep intricate detail readable at letter/A4 print size. Leave a clean white safe margin around the entire design. Pure black outlines on pure white only: no gray, shading, hatching, gradients, color, filled black areas, texture, or border. No words, letters, labels, or numbers.