ChatGPT API for Frontier GPT 5.6 Reasoning

Build a single self-contained HTML file (inline CSS and JavaScript only — absolutely no external libraries, CDNs, frameworks, fonts, or image URLs) that opens directly in any modern browser and runs a living, self-growing glass greenhouse ecosystem simulator rendered entirely as flat Canvas/SVG vector illustration. The full-viewport scene is a domed Victorian greenhouse: a curved glass cupola arcs across the top as the framing element, its panes drawn as translucent jade-green polygons with soft specular highlights and thin muntin outlines, and a strip of dark cultivation soil runs along the bottom. Art direction is clean vector illustration — leaves and stems drawn with crisp vein-line outlining plus semi-transparent layered fills, a palette grounded in misty sage green and mossy brown with amber sunlight and jade-glass accents; no photorealism, no gradients-as-textures, keep it graphic and hand-illustrated in feel. Core interaction: clicking anywhere on the soil plants a seed at that spot, and the plant grows in real time using an actual L-system — implement a recursive rewriting grammar (axiom plus production rules with branching brackets and randomized angle/length jitter per instance so no two plants are identical) and animate the derivation so branches extend, fork, and unfurl leaves progressively over a few seconds rather than popping in fully formed. Tropical ferns and climbing vines should phototropically bend and curl toward a draggable sun: render a glowing amber sun disc the user can grab and drag anywhere in the sky, and every growing tip must continuously reorient its growth direction toward the sun's current position so dragging the sun visibly steers how the whole garden leans and climbs. Seedlings unfurl with an easing animation, and condensation droplets form on the glass and slowly slide down on a loop. Drive everything with a day-night cycle tied to the sun's position: the ambient light and sky wash slide smoothly along a warm-gold to cool-blue gradient, the sun's location sets the direction and length of soft plant shadows cast on the floor and the drifting light-spots across the glass, and at dusk fireflies fade in as small pulsing points of light drifting among the foliage. Composition radiates plant growth from the base upward toward the center, contained by the dome's arc. Use requestAnimationFrame for a continuous, quietly breathing animation loop; keep performance smooth with many plants on screen at once. Include subtle unobtrusive controls (e.g. a slider or auto-advancing toggle for time of day, and a reset/clear button) styled to match the illustrated aesthetic, plus a one-line hint telling the user to click the soil to plant and drag the sun to guide the growth. Make it responsive to any window size, and make the emotional tone calm, still, and alive — first morning light slanting in while tender shoots open together. This is a generative simulation, not a game or dashboard: prioritize the genuine recursive growth algorithm, the animation loop, and the light/shadow/phototropism physics.

Build a complete single-file HTML page containing an interactive global startup funding dashboard with fictional but internally consistent data for 8 industry sectors across 5 years. All CSS and JavaScript must be inline with zero external dependencies, no chart libraries, no CDNs, no images. Render three hand-coded visualizations on canvas or SVG: an animated bar chart that re-sorts with easing when the user picks a year from a slider, a line chart with hover tooltips showing exact values and a vertical tracking guide, and a donut chart whose segments expand on hover with a spring animation. Include a dark modern UI with a violet-to-teal accent palette, animated number counters in four KPI stat cards, a sector filter row of toggle chips that instantly updates all charts, and a light/dark theme switch with smooth color transitions. The layout must be responsive, collapsing to a single column below 768px, and every interaction must respond in real time without page reloads.