# Portolan Chart (ポルトラーノ海図) — image generation prompt
# IndexStyle No.372 — https://indexstyle.org/styles/portolan-chart
# Style descriptors only. Never imitates a specific artist, studio, brand or work.

An original image in the visual language of Portolan Chart (Style, Diagrammatic Expression, 13th–17th century). Visual cues: Radiating rhumb lines; Names perpendicular to coasts; The vellum ground; Flags and monsters as ornament. Mood: Trust, Nostalgia, Exhilaration. Color cues: #e9e6dd, #67635d, #171615.

Constraints: do not imitate, reference or name any specific artist, studio, brand, character or copyrighted work.
Produce an original composition that follows the general period style described above.
Full design spec: https://indexstyle.org/styles/portolan-chart/design.md