「Sky」は FontVibe AI で作成したバイキングルーンの文字エフェクトです。直線と45度の斜線だけで組んだ角ばったルーン風大文字。オーロラの夜空の下、冷たい鋼灰色の石に彫られています。

rendered in Elder Futhark runic letterforms — all strokes constructed from straight segments at horizontal, vertical, and 45-degree diagonal angles only; no curves anywhere, angular geometry derived from the physical constraint of carving into stone with a straight blade. Tall narrow proportions, strong vertical emphasis, sharp pointed terminals where strokes meet. Each stroke presents a flat angular face — illuminated and shadow faces alternate across the word creating the faceted highlight pattern of hand-carved letters. Pure runic geometry, powerfully ancient. 'Sky' in massive clean Elder Futhark runic letterforms, pure angular geometry — all strokes constructed from straight horizontal, vertical, and 45-degree diagonal segments, zero curves, each terminal ending in a sharp blade-cut point. The three letterforms stand with tall narrow proportions and strong vertical emphasis, faceted highlight and shadow faces alternating across each stroke as cold northern light carves across the angular geometry. Background: pure deep arctic black, fading to deep midnight blue-grey at the outer edges — a vast open darkness evoking an open northern sky before dawn. Overhead: a faint aurora corona, a thin ribbon of cold teal and pale violet electroluminescence arcing softly across the upper atmosphere without competing with the letterforms. Floor plane: flat polished black obsidian with razor-edge specular reflections of the letter bases, mirror-clean. Lighting: single hard cold key light from high above and slightly left, near-white with a trace of icy blue, casting crisp razor-sharp letter shadows downward onto the obsidian plane. Secondary cool fill from the right, deep shadow on the left flanks of each stroke. No fire, no particles, no moss, no organic texture. Tournament-stage cold authority — clean angular geometry as the complete visual statement. Ultra-high contrast, 8K render resolution, cinematic reveal quality.