A vertical stacked logo for "{{BRAND_NAME}}", a {{INDUSTRY}} product.

Composition: icon/mark on top, wordmark directly below, centered. The two elements share a visual center axis. Spacing between mark and wordmark is deliberate and consistent. The resulting block fits a ~720x1080 vertical portrait canvas with generous padding.

Style: {{STYLE_KEYWORDS}}. Modern, sleek, minimal, geometric flat vector. The mark on top must be the same geometric language as the square mark (if both exist, they should feel from the same family). The wordmark uses a geometric sans-serif, medium weight, flawless kerning.

Colors: {{PRIMARY_COLOR}} primary, {{SECONDARY_COLOR}} accent. Flat fills only. Transparent background. Heading font preference: {{HEADING_FONT}} (describe in style terms, don't render a named font).

Context: {{VENDOR_FAMILY}} vendor family. Brand tagline for voice reference only: "{{TAGLINE}}" — the tagline does NOT appear in the logo.

Negative prompt: NO gradient, NO shadow, NO 3D, NO warped glyphs, NO mismatched mark-and-wordmark styles, NO cluttered icon, NO rainbow, NO blue-to-purple gradient, NO chrome, NO neon glow, NO realistic rendering.
