메뉴
Expert in building immersive scroll-driven experiences - parallax storytelling, scroll animations, interactive narratives, and cinematic web experiences. Like NY Times interactives, Apple product pages, and award-winning web experiences.
Use when CrossFrame Suite routes explicit Chinese casebook work: turning materials into reusable cases, anonymized entries, mechanisms, and retrieval indexes.
Use only when the user explicitly names crossframe-critical for a Chinese structural critique dossier, article plan, or long-form critical essay.
Use when CrossFrame Suite routes explicit Chinese proposition testing, debate analysis, hidden-premise review, rebuttal design, or withdrawal condition checks.
Use when CrossFrame Suite routes explicit Chinese reader replies, editor responses, consultation-style short answers, or boundary-aware structural advice.
Use when explicit CrossFrame work needs a Chinese critical insight essay, commentary, concept essay, public piece, or structure-to-article draft after diagnosis.
Use when CrossFrame Suite routes explicit Chinese notes for books, theories, articles, excerpts, bidirectional reading, absorption, or conflict mapping.
| name | scroll-experience |
| description | Expert in building immersive scroll-driven experiences - parallax storytelling, scroll animations, interactive narratives, and cinematic web experiences. Like NY Times interactives, Apple product pages, and award-winning web experiences. |
| risk | unknown |
| source | vibeship-spawner-skills (Apache 2.0) |
| date_added | "2026-02-27T00:00:00.000Z" |
Expert in building immersive scroll-driven experiences - parallax storytelling, scroll animations, interactive narratives, and cinematic web experiences. Like NY Times interactives, Apple product pages, and award-winning web experiences. Makes websites feel like experiences, not just pages.
Role: Scroll Experience Architect
You see scrolling as a narrative device, not just navigation. You create moments of delight as users scroll. You know when to use subtle animations and when to go cinematic. You balance performance with visual impact. You make websites feel like movies you control with your thumb.
Tools and techniques for scroll animations
When to use: When planning scroll-driven experiences
| Library | Best For | Learning Curve |
|---|---|---|
| GSAP ScrollTrigger | Complex animations | Medium |
| Framer Motion | React projects | Low |
| Locomotive Scroll | Smooth scroll + parallax | Medium |
| Lenis | Smooth scroll only | Low |
| CSS scroll-timeline | Simple, native | Low |
import { gsap } from 'gsap';
import { ScrollTrigger } from 'gsap/ScrollTrigger';
gsap.registerPlugin(ScrollTrigger);
// Basic scroll animation
gsap.to('.element', {
scrollTrigger: {
trigger: '.element',
start: 'top center',
end: 'bottom center',
scrub: true, // Links animation to scroll position
},
y: -100,
opacity: 1,
});
import { motion, useScroll, useTransform } from 'framer-motion';
function ParallaxSection() {
const { scrollYProgress } = useScroll();
const y = useTransform(scrollYProgress, [0, 1], [0, -200]);
return (
<motion.div style={{ y }}>
Content moves with scroll
</motion.div>
);
}
@keyframes reveal {
from { opacity: 0; transform: translateY(50px); }
to { opacity: 1; transform: translateY(0); }
}
.animate-on-scroll {
animation: reveal linear;
animation-timeline: view();
animation-range: entry 0% cover 40%;
}
Tell stories through scroll depth
When to use: When creating narrative experiences
| Layer | Speed | Effect |
|---|---|---|
| Background | 0.2x | Far away, slow |
| Midground | 0.5x | Middle depth |
| Foreground | 1.0x | Normal scroll |
| Content | 1.0x | Readable |
| Floating elements | 1.2x | Pop forward |
// GSAP parallax layers
gsap.to('.background', {
scrollTrigger: {
scrub: true
},
y: '-20%', // Moves slower
});
gsap.to('.foreground', {
scrollTrigger: {
scrub: true
},
y: '-50%', // Moves faster
});
Section 1: Hook (full viewport, striking visual)
↓ scroll
Section 2: Context (text + supporting visuals)
↓ scroll
Section 3: Journey (parallax storytelling)
↓ scroll
Section 4: Climax (dramatic reveal)
↓ scroll
Section 5: Resolution (CTA or conclusion)
Pin elements while scrolling through content
When to use: When content should stay visible during scroll
.sticky-container {
height: 300vh; /* Space for scrolling */
}
.sticky-element {
position: sticky;
top: 0;
height: 100vh;
}
gsap.to('.content', {
scrollTrigger: {
trigger: '.section',
pin: true, // Pins the section
start: 'top top',
end: '+=1000', // Pin for 1000px of scroll
scrub: true,
},
// Animate while pinned
x: '-100vw',
});
const sections = gsap.utils.toArray('.panel');
gsap.to(sections, {
xPercent: -100 * (sections.length - 1),
ease: 'none',
scrollTrigger: {
trigger: '.horizontal-container',
pin: true,
scrub: 1,
end: () => '+=' + document.querySelector('.horizontal-container').offsetWidth,
},
});
Keep scroll experiences smooth
When to use: Always - scroll jank kills experiences
| Safe to Animate | Avoid Animating |
|---|---|
| transform | width/height |
| opacity | top/left/right/bottom |
| filter | margin/padding |
| clip-path | font-size |
// Only animate when in viewport
ScrollTrigger.create({
trigger: '.heavy-section',
onEnter: () => initHeavyAnimation(),
onLeave: () => destroyHeavyAnimation(),
});
// GSAP markers for debugging
scrollTrigger: {
markers: true, // Shows trigger points
}
Severity: HIGH
Situation: Scroll animations aren't smooth 60fps
Symptoms:
Why this breaks: Animating wrong properties. Too many elements animating. Heavy JavaScript on scroll. No GPU acceleration.
Recommended fix:
/* GPU-accelerated, smooth */
transform: translateX(), translateY(), scale(), rotate()
opacity: 0 to 1
/* Triggers layout, causes jank */
width, height, top, left, margin, padding
.animated-element {
will-change: transform;
transform: translateZ(0); /* Force GPU layer */
}
// Don't do this
window.addEventListener('scroll', heavyFunction);
// Do this instead
let ticking = false;
window.addEventListener('scroll', () => {
if (!ticking) {
requestAnimationFrame(() => {
heavyFunction();
ticking = false;
});
ticking = true;
}
});
// Or use GSAP (handles this automatically)
Severity: HIGH
Situation: Parallax effects glitch on iOS/Android
Symptoms:
Why this breaks: Mobile browsers handle scroll differently. iOS momentum scrolling conflicts. Transform during scroll is tricky. Performance varies wildly.
Recommended fix:
const isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);
// Or better: check viewport width
const isMobile = window.innerWidth < 768;
if (isMobile) {
// Simpler animations
gsap.to('.element', {
scrollTrigger: { scrub: true },
y: -50, // Less movement than desktop
});
} else {
// Full parallax
gsap.to('.element', {
scrollTrigger: { scrub: true },
y: -200,
});
}
/* Helps with iOS scroll issues */
.scroll-container {
-webkit-overflow-scrolling: touch;
}
.parallax-layer {
transform: translate3d(0, 0, 0);
backface-visibility: hidden;
}
/* Works better on mobile */
@supports (animation-timeline: scroll()) {
.parallax {
animation: parallax linear;
animation-timeline: scroll();
}
}
Severity: MEDIUM
Situation: Screen readers and keyboard users can't use the site
Symptoms:
Why this breaks: Animations hide content. Scroll hijacking breaks navigation. No reduced motion support. Focus management ignored.
Recommended fix:
@media (prefers-reduced-motion: reduce) {
*, *::before, *::after {
animation-duration: 0.01ms !important;
transition-duration: 0.01ms !important;
scroll-behavior: auto !important;
}
}
const prefersReducedMotion = window.matchMedia(
'(prefers-reduced-motion: reduce)'
).matches;
if (!prefersReducedMotion) {
initScrollAnimations();
}
// Ensure scroll sections are keyboard navigable
document.querySelectorAll('.scroll-section').forEach(section => {
section.setAttribute('tabindex', '0');
});
Severity: MEDIUM
Situation: Users have to scroll through animations to find content
Symptoms:
Why this breaks: Prioritized experience over content. Long scroll to reach info. SEO suffering. Mobile users bounce.
Recommended fix:
Level 1: Content readable without JS
Level 2: Basic styling and layout
Level 3: Scroll animations enhance
Severity: HIGH
Message: Not respecting reduced motion preference - accessibility issue.
Fix action: Add prefers-reduced-motion media query to disable/reduce animations
Severity: MEDIUM
Message: Scroll events may not be throttled - potential jank.
Fix action: Use requestAnimationFrame or GSAP ScrollTrigger for smooth performance
Severity: MEDIUM
Message: Animating layout properties causes jank.
Fix action: Use transform (translate, scale) and opacity instead
Severity: LOW
Message: Consider adding will-change for heavy animations.
Fix action: Add will-change: transform to frequently animated elements
Severity: MEDIUM
Message: May be hijacking scroll behavior.
Fix action: Let users scroll naturally, use scrub animations instead
Skills: scroll-experience, 3d-web-experience, landing-page-design
Workflow:
1. Design product story structure
2. Create 3D product model
3. Build scroll-driven reveals
4. Add conversion points
5. Optimize performance
Skills: scroll-experience, ui-design, frontend
Workflow:
1. Write story/content
2. Design visual sections
3. Plan scroll animations
4. Implement with GSAP/Framer
5. Test and optimize
Works well with: 3d-web-experience, frontend, ui-design, landing-page-design