narrative-deck：九节拍无依赖 HTML 演示

# Narrative Deck Nine-beat frame, fifteen effects, three templates. Placement beats spectacle. ## Scope **Does:** structure HTML decks; implement scroll/canvas effects. **Does not:** write content; export PDF/PPTX. ## Workflow 1. Ask purpose/audience/tone; infer when clear. 2. Shape story — read `references/story-design.md`. 3. Map beats — read `references/structure.md`. 4. Choose **at most three** effects — read `references/placement.md`. 5. Confirm beats/effects. 6. Start from `../templates/`. 7. Implement chosen references. 8. Run `references/checklist.md`. ## The Nine Beats Hook → Setup → Inciting → Pinch 1 → Midpoint → Pinch 2 → PP2 → Climax → Resolution. See `references/structure.md`. ## Effects | # | Effect | Serves | Reference | |---|---|---|---| | 01 | Scroll reveal | Setup | `references/01-reveal.md` | | 02 | Sticky scrollytelling | Pinch 1 | `references/02-scrolly.md` | | 03 | Hover disclosure | Inciting | `references/03-hover.md` | | 04 | You Draw It | Midpoint | `references/04-draw.md` | | 05 | Physics field | Ambient | `references/05-orbs.md` | | 06 | Forensic annotation | Pinch 1 / PP2 | `references/06-forensic.md` | | 07 | Kinetic type | Hook / Climax | `references/07-type.md` | | 08 | Parallax depth | Hook | `references/08-parallax.md` | | 09 | Colour threading | Throughout | `references/09-thread.md` | | 10 | Binary quiz | Midpoint | `references/10-quiz.md` | | 11 | Turn-by-turn | Pinch 2 | `references/11-proc.md` | | 12 | Spatial viewer | Midpoint | `references/12-ar.md` | | 13 | Before/after | Inciting / Climax | `references/13-ba.md` | | 14 | Audio waveform | Pinch 2 | `references/14-wave.md` | | 15 | Paywall simulator | Resolution | `references/15-pw.md` | Read only used effect references. ## Architecture — Non-Negotiable 1. Read `prefers-reduced-motion` once; animations jump to end. 2. Use `IntersectionObserver`; scroll math uses rAF + `ticking` + `{passive:true}`. 3. Gate canvas loops; max three active. 4. Replay uses WAAPI with `fill:'both'` and `cancel()`. 5. Tokens follow brand/tone; ask if missing. See `references/tokens.md`. 6. Hover reveals work on `:focus-visible`; use `<button>`, never `<div>`. 7. Canvas scales by `devicePixelRatio`. 8. Arrows/space advance slides; responsive from 360px. ## Hard Limits - **Three effects max.** Four reads as showreel. - **No climax effects.** Spectacle competes with resolution. - **Parallax: six layers maximum.** - **Kinetic type: headlines only.** Never body copy. - **No dependencies.** No build step, no framework, no package.json. ## Templates | File | Shape | |---|---| | `../templates/pitch.html` | problem → solution → ask | | `../templates/explainer.html` | question → mechanism | | `../templates/report.html` | finding → recommendation | ## Live Reference `../docs/index.html` runs all effects with replay controls. Lift working code from there.