Use case: subtle full-bleed website background texture for the Vignette clinical counseling training app.

Create a raster bitmap background only. No text, no UI, no screens, no device mockups, no logo, no people, no tile grid, no collage panels, no isolated sticker sheet.

Visual direction: a continuous warm off-white handmade paper surface with soft daylight, very subtle sage-teal and muted terracotta watercolor stains, faint botanical line impressions, light notebook-paper grain, and calm clinical education atmosphere. The image should work behind real interface panels without demanding attention.

Composition and framing: 16:9 landscape, seamless single surface, clean corners, generous negative space, no visible borders, no discrete cards, no obvious central object, no dramatic blob gradients.

Style and medium: refined editorial raster texture, warm clinical SaaS background, soft natural material, photographic-paper-meets-watercolor feel. Not vector art, not SVG, not flat icon illustration.

Palette: warm paper (#FBFAF8, #F4F2EE), sage teal (#3E7A6E), muted terracotta (#B0735C), low saturation, gentle contrast.

Output should be suitable as a CSS background image with panels layered over it.