TITLE: Meridian Mall — an empty atrium at dusk PROMPT: Build a single self-contained HTML page: a vaporwave mall atrium seen in one-point perspective at dusk. Palette #ffd6e8 pink sky, #b8a9ff lavender, #6ee7f9 cyan, #2b1d3a dusk purple, #f5f0e6 tile. The full-bleed scene is a fixed layer stack. Sky: a 100%×220% six-stop vertical gradient (#1a1230 → #2b1d3a → #6b4f8f → #b8a9ff → #ffd6e8 → #ffe9f2) whose background-position drifts 8% → 42% over a 38s alternate ease-in-out for a slow dusk cycle. A striped retro sun (radial pink gradient, 46vw max, masked by a 12px/18px repeating-linear-gradient of horizontal bands) pulses scale 1 → 1.045. The room is built from two CSS 3D planes meeting at a 52% horizon: the floor is a 300%-wide plane with transform perspective(520px) rotateX(74.5deg) from a top origin, filled with a four-quadrant conic-gradient checkerboard (#2b1d3a / #f5f0e6) at 132px tiles, scrolling 132px per 26s so the floor seems to glide, with an inset 160px vignette and a top-down dark gradient; the glass roof is the mirrored plane (rotateX(-73deg) from a bottom origin) with 90deg repeating mullion stripes in cream, cyan and lavender at 62% opacity. Side vignette walls, a repeating-column layer masked to the edges, a hazy back wall with a glowing cyan light strip, two inline-SVG palm silhouettes (#2b1d3a, four frond groups each swaying rotate -1.6deg → 1.6deg on staggered 7.5–10s loops), a fountain (elliptical basin with radial cyan water gradient, a floating tier, and a canvas jet drawn as a tapering plume with a bright white core plus gravity-simulated droplets and a base pool glow, DPR-scaled), and an inline-SVG escalator (translucent lavender-to-cyan glass balustrade, a 10-step staircase profile stroked with an animated dashed tread, a rounded handrail with a return stub, a dark plinth and a blinking pink lamp). HUD in a fixed layer: wide-tracked "Meridian Mall" title in Trebuchet MS 700 at clamp(19px,4.2vw,52px) with .46em tracking and a pink/lavender neon text-shadow; a frosted store directory panel on the left with eight rows that highlight cyan on hover and dim closed stores; a "Now Playing" cassette widget lower-right with two conic-gradient reels, a tape window and a play/pause state; a monospace hint line. Interaction: pointer drag on the scene pans a parallax rig — a single --px/--py custom property pair on the scene root drives per-layer translate3d multipliers (sky .16, sun .24, roof .34, floor .42, palms .6, fountain .7, escalator .58) with a 0.09 lerp; clicking the atrium splashes 22 extra fountain droplets; clicking the cassette starts a gesture-unlocked WebAudio pad (four detuned saw/triangle oscillators at 110/164.81/220/329.63Hz into a 620Hz lowpass modulated by a 0.08Hz LFO, 1.6s gain ramp to 0.16) and adds a VHS class that applies a hue-rotate wobble and a scanline overlay. Reduced motion stops the sky cycle, sway, escalator, blink and reveals but still paints a still jet frame. Everything inline, one