TITLE: Asterism — Draw Your Own Sky FILE: 009-constellation-mapper.html === PROMPT (exact prompt used) === Build "Asterism — Draw Your Own Sky", an interactive star chart where you invent constellations. A deep indigo night gradient (#060818 → #141a3d) with a procedurally placed star field (varying magnitude, subtle colour temperature from blue-white to amber, twinkle), a faint Milky Way band made of clustered noise particles, and fine gold line work (#e8c872) in the style of antique celestial atlases. Click one star and then another to draw gold connecting lines; when you close a shape (or press "Name it"), the constellation receives a generated mythic name (combined from curated word lists, e.g. "The Weeping Heron") and an engraved label with a faint illustrated halo appears. A side panel (glass, collapsible on mobile) lists your constellations; hovering highlights them. Also: a slowly rotating sky (drag to rotate), a toggle for a coordinate grid of curved RA/Dec-style lines, "Clear sky" and "Save as PNG". Constellations persist in localStorage. Typography: elegant serif capitals with wide tracking and italic Latin-flavoured subtitles. SHARED REQUIREMENTS (apply to every page in this 100-page collection): 1. One standalone HTML5 file. All CSS inline in