The site's motion system, on the surface it was worked out on — a duration scale, three easing curves, weight expressed as duration-plus-curve, ambient loops, and a few signature behaviors, all honoring a reduced-motion contract. Drag anything and the whole system responds live. Restraint is the default: nothing overshoots or bounces unless you ask it to.
Preview
Duration scale
Six named steps. Each swatch runs back and forth on its own step's duration, same neutral ease (ambient's curve) across all six, so the only variable your eye is reading is duration.
Easing library
Three named curves — enter, exit, ambient. Click any track to replay. Defaults are restrained: no bounce, elastic, or overshoot anywhere. Weight/importance is expressed by pairing these with a duration step (section 3), not by separate curve variants.
Weight / importance tuner
Three objects, same on-screen distance, each a live example of duration + curve composition — pick any duration step and any curve per tier on the right. "Heavy object entering" = slow + enter; "light object drifting" = fast + ambient. No bespoke per-tier curve or cushion — these three are worked examples, not an enum.
Enter / exit round trip
One card, the actual enter/exit curves from section 2 above at duration.base — arriving and leaving matched together, not a technique bake-off. Tune the curves in section 2; this just shows them working as a pair.
Ambient loop lab
Subtle, low-amplitude looping motion for a "living site, not a distracting one." The three pulsing dots share one desync control: at 0 they pulse in unison ("robotic"); higher values stagger their phase ("organic"). The crosshair only tracks the cursor inside this panel.
breathing glow
pulsing grid nodes (desync)
gradient drift
cursor-lag crosshair (this panel only)
Choreography / stagger lab
A small hero mockup — eyebrow, headline, subhead, CTA, image — enters as one GSAP timeline. Order and interval are tunable on the right.
Signature behaviors
Three named, scoped behaviors — not global page effects.
Grid draw-on
Hand-drawn via stroke-dashoffset (no DrawSVGPlugin), wired to replay every time this section scrolls into view, not just once. Scroll this panel up and back down to see it re-trigger.
Crosshair track
Scoped to this card only — fades out the moment the cursor leaves its bounds. Not a page-wide effect.
Hover to track — leave the card and the reticle fades.
The shipped scale (tokens/motion.json), roughly-evenly spaced. Named by role, not by ms — reach for fast/base/slow in components, not raw numbers. Drag anything to explore; Reset returns to these values.
Four bezier control-point numbers per curve (x1 y1 x2 y2, same meaning as CSS cubic-bezier()). Defaults are restrained on purpose — nothing overshoots past 1.0 by default. Three curves only — settle/emphasis/two-phase linear-settle were cut after live tuning; weight is duration+curve composition (section 3), not more curves.
enter — entrances, ease-out
exit — exits, ease-in / accelerate
ambient — loops, sine-like ease-in-out
Per semantic tier: a duration step + a curve name — freely combinable, not a bespoke per-tier curve. This is the composition itself, not a preview of hidden math.
primary
Duration
Curve
secondary
Duration
Curve
tertiary
Duration
Curve
Nothing to tune here — this demo runs directly on the enter/exit curves from section 2 and duration.base from section 1. It's a worked example of the two curves paired together, not a separate control surface.
Amplitude defaults low — ambient motion should read as "alive," not "animated." Desync prevents multiple loops sharing a start time.
0 = all three dots pulse in unison ("robotic"). Higher = staggered phase ("organic").
Order the hero mockup's five elements enter in, and the delay between each.
Grid draw-on runs on the enter curve. Theme-crossfade timing below; crosshair-track's lag constant is shared with the ambient crosshair (section 5).
Crossfade easing
Ambient/looping motion fully disables under reduced motion (not dampened). Essential transitions collapse to fast/near-instant instead.