A dark mode web UI design mockup featuring a stylized, slender female character

A dark mode web UI design mockup featuring a stylized, slender female character resembling Jinx from Arcane. She stands offset to the right in a relaxed but dangerous posture, holding a glowing purple grenade, with a massive heavy machine gun slung behind her. She wears a punk-style black strappy crop top and dark utility pants with thick belts. Her pale skin—visible on her face, neck, shoulders, midriff, and arms—feels smooth like digital paint, heavily contoured by a harsh, intense neon green rim light. She has long thick blue twin braids and a confident smirk framed by dark grunge eyeliner. 

The composition is deliberately asymmetrical, functioning as a high-tech landing page. The left side is dominated by large, textured white typography spelling "ARCANE" layered behind the character. Behind her head, a bright neon green graffiti stroke spells "JINX". The background is a murky, smoky dark green gradient. Crisp, minimalist UI elements—navigation lines, social icons, and a scroll prompt—border the 16:9 frame. The lighting is dark ambient pushed by glowing neon accents. The vibe is chaotic, edgy, and anticipatory, capturing the gritty aesthetic of a modern gaming promotional site.