Internal reference
Design System
Every value here is extracted from the live code (globals.css, layout.tsx and the components themselves. And every rationale is summarised from the docblocks those components carry, which is where this codebase keeps its decisions. Where a component is module-private, its sample is a replica built from the exact same class strings and labelled as such. Not linked from the nav, and excluded from indexing.
Foundation
Color
globals.css
Why it exists
The site commits to one accent. Everything else is a near-black surface or a white/foreground opacity ramp. Which is why a project's own colour never reaches text anywhere, and why the project-card kind line uses the site cyan rather than the per-project hue: doing otherwise put red, violet and purple side by side on a page whose whole argument is restraint.
Depth on a near-black page cannot come from drop shadows. A shadow needs something lighter than itself to fall onto, and the body panel is already #0B0B0B. So cards are the same value as or darker than the surface behind them, and the depth cue is the lit top edge (an inset white hairline) instead.
Core
The three custom properties in globals.css, plus the two poles every ramp is mixed from.
--background
#0a0a0a
globals.css:root
--foreground
#f5f5f5
globals.css:root
--accent
#00ccff
globals.css:root · the site's single accent
black
#000000
Card fill: GlowButton, WhyBox, StatRow, testimonial cards
white
#ffffff
Never flat. Always through an opacity ramp
Surface ladder
Six near-black steps, each owned by a specific surface.
meta card
#070707
MetaRow boxed cells (primitives.tsx)
page
#0a0a0a
--background
body panel
#0B0B0B
Case-study body panel (CaseStudyShell, HeadingFrame)
section panel
#0E0E0E
Zigzag panels (globals.css), BeforeAfter
filled card
#141414
SplitCard, avatar well, BeforeAfter chrome
glow bloom
#181818
GlowButton's blurred halo
Project accents
From content/projects.ts. Each drives exactly two things: the deck's index number, and a wash mixed into --background at 6% behind a deck panel. They reach no text anywhere.
subscriptions-ui
#4285F4
map-implementation
#EF4444
free-trial
#8B5CF6
hoop-carpool
#A855F7
Effect palettes
Component-local colours that never leave their effect: the glitch layers (GlitchText, on More work) and the contact rain trail (DigitalRain preset).
glitch cyan
#00ccff
.glitch__layer--cyan (globals.css) · var(--accent), not its own value
glitch red
#ff2e5b
.glitch__layer--red (globals.css)
rain trail
#00ccff
DigitalRain trailColor default · the accent as a LITERAL, since canvas fillStyle resolves no CSS vars
Foundation
Tokens
globals.css · layout.tsx
Why it exists
Three colour tokens and two font tokens; everything else is derived from them through opacity. The ramps matter more than the hexes: opacity is the only thing ranking text on this site, so the levels have to run in the order the reader should follow.
That order was once inverted, and it is the reason the ramp is written down: Prose sat at 65 (dimmer than the bullet lists and boxes leaning on it. So a scan of the page surfaced the scaffolding and buried the reasoning.
Theme tokens
--background
#0a0a0a
Page ground. Exposed to Tailwind as bg-background via --color-background.
--foreground
#f5f5f5
All text, through the ramp below. Exposed as text-foreground.
--accent
#00ccff
Labels, active marks, bullets, focus rings, outline headings.
--font-sans
"Satoshi", ui-sans-serif, system-ui
The reading voice. Fontshare: 400/500/700 + real italics 401/501/701. No 600 exists. Font-semibold on it would synthesise a fake, so use font-bold.
--font-nav
var(--font-montserrat)
The furniture voice (font-nav): nav, labels, eyebrows, footer. next/font Montserrat, latin subset.
Text ramp
Rendered at each level, in reading order: argument above support above captions.
100: headings, data, active nav, highlighted spans
/80: WhyBox body, quotes, testimonial quotes, SkillChips
/75: Prose (the narrative voice), the hero claim
/70: bullet lists, card body copy, ProblemPair bodies
/55: muted labels, resting nav links, meta lines, footer
/50: figure captions (italic), the hero footline
/45: display only: the receding half of a two-tone claim
/45 is the exception that proves the floor, and it earns it by never appearing in running text. All nine uses are one device (a claim cut at the full stop, setup receding, payoff at full strength. And every one sits between 18px and 44px, where there is far more ink per glyph and the same value reads brighter than it would in a paragraph. It was flagged as off-ramp by the audit below until the nine were read: the code was right and this page was incomplete. Use it for that device and nothing else.
/50 is a hard floor, and it is a contrast floor rather than a taste one: at the footer's 10px the text counts as normal text to WCAG and needs 4.5:1, which over that panel lands exactly at 50%. The /55 the footer uses measures 5.82:1. An older revision used /25 there. About 1.7:1, invisible and failing.
Border ramp
Hairlines do the framing. Hover brightens along the same ramp. White/20 → /45 on GlowButton, /15 → /30 on the resume pill, /10 → /20 on StatRow.
white/10
The hairline: cards, rules, header border, dividers
white/15
SkillChips, resume pill, footer dividers, contact tree
white/20
GlowButton border (rest), avatar ring
white/25
Crop marks, GlowButton ambient border
Fill washes
A background lighter than its surface is always a white wash, never a new grey. That is what keeps the surface ladder from growing a seventh step every time something needs to lift.
white/[0.02]
StatRow hover fill
white/[0.03]
Footer panel
white/[0.04]
TraceButton hover fill
white/5
Active row, mobile nav sheet
Ghost devices sit on the same scale: watermark glyphs at white/[0.06]–[0.07] (SplitCard numerals, the testimonial quote mark), background icons at opacity-5 (MetaRow, StatRow), the plus-grid texture at stroke-opacity 0.05, hero underlines at white/10.
Foundation
Typography
layout.tsx · primitives.tsx
Why it exists
Two voices, and the split is strict. Satoshi is what you read. Display, headings, body, quotes. Montserrat is the furniture. Labels, nav, footer, anything naming a thing rather than saying it.
The label system is one component, MiniHeading, and that is a consolidation rather than a preference: the site once had fourteen distinct Montserrat label styles (eight trackings, four sizes, four weights. Of which two covered 32 of 53 uses and the other twelve were improvised on the spot. Those two became label and micro. A rule that lives in a doc loses to whatever is quickest to type, so every non-interactive label goes through the component and the rule enforces itself.
lead (16px) was added later, on purpose and against the two-sizes rule: at 11px the words naming the Learnings, Challenge and Impact cards were the smallest type on the page, and those are the three panels a recruiter reads last and remembers. 16 is not a new number. It is the body step the site already had. 18 was built first and rejected as too loud.
Satoshi. Display & reading
Display / Hero H1
Hero.tsx
clamp(3.8rem, 13vw, 11rem) · 700 · uppercase · leading-[0.9] · tracking-tight. Outline word: text-transparent + -webkit-text-stroke 2px #f5f5f5.
MiguelDuran
H2 / SectionHeading
SectionHeading.tsx
text-[40px] sm:text-[56px] · 700 · uppercase · leading-[1.02] · tracking-tight · text-balance. Trailing word stroked 1.5px in #f5f5f5, or accent via strokeAccent. Case studies pass text-[26px] sm:text-[56px].
Selected work
The challenge
The case-study size is not a style choice: the default 40px collided with the cover h1 below sm, where that h1's clamp bottoms out at 32px. Page title and section title rendered the same size and the cover stopped reading as the top of anything. 26px restores a 1.23x step. Desktop is untouched.
Statement. Heading & claim
primitives.tsx · Statement
text-xl sm:text-3xl · 700 · uppercase · leading-[1.1] · tracking-tight. Asymmetric margins: 96px above, 28px below, because it introduces the block under it.
How I fixed both lists
So we handed our clients the keys
The two variants exist because across 22 uses these were one treatment, which meant the loudest voice on the page said “Results” in the same breath as its thesis. The grammar is the test: a claim has a verb and asserts something, so it is italic. A pull-quote, the author's own line. A label is a noun phrase naming the block below it, so it stays upright. The italic is a real 701 cut, not a sheared roman.
Panel title (PANEL_TITLE)
primitives.tsx · PANEL_TITLE
text-lg sm:text-xl · 500 · italic · uppercase · tracking-tight. Colour is deliberately NOT baked in: WhyBox sets it accent, ValidationColumns sets it muted.
Why?
Body / Prose
primitives.tsx · Prose
text-sm sm:text-base · leading-relaxed · foreground/75 · max-w-xl · space-y-7.
The narrative voice, and therefore the brightest running text on the page. Body copy is 16px on a 26px line, and the paragraph gap is 28. At the old 16 the space between paragraphs was tighter than the space between lines inside them.
Figure caption
primitives.tsx
text-sm sm:text-base · italic · foreground/50. One job, one level. Shot, ShotGrid and Placeholder all use it.
The complete flow, ready for handover.
Montserrat (the label system
MiniHeading: three sizes, three tones, and the system ends there.
Sizes. Lead / label / micro
primitives.tsx · MiniHeading
lead 16px / 0.14em / 500 · label 14px / 0.14em / 500 · micro 11px / 0.28em / 500. All uppercase, leading-none.
Lead (the title of a card
Label (step markers, kind lines
Micro. Sub-labels inside panels
The known cost of lead, stated so it is not rediscovered as a bug: at 16 a card title is the same size as body copy, so what separates them is the caps, the tracking and the colour. That is the trade. Which is why lead must never be used for a label sitting in running text.
Tones (accent / muted / strong
primitives.tsx · MiniHeading
A real prop, not a className override: text-foreground and text-foreground/55 are utilities of EQUAL specificity, so passing one in className races the tone and sometimes loses.
Accent (the default
Muted (foreground/55
Strong. Full foreground
Documented non-users
Hero.tsx / Header.tsx / Footer.tsx
Voices that deliberately stay outside MiniHeading, so nobody 'fixes' them into it.
11 / 0.35em / 400 (the eyebrow voice (hero footline)
14 / 0.14em / 400 (resting nav link
16 / 600 (active nav link
11 / 0.28em (resume pill
10 / 0.14em. Footer
The nav is the interesting exception: it has the label geometry but keeps its own weights, because it is interactive chrome that encodes state in size and weight , 400 resting, 600 active, plus a 14→16px scale. MiniHeading's flat 500 would erase the signal.
Foundation
Spacing & radii
primitives.tsx · globals.css
Why it exists
Four steps of vertical rhythm, and only four. Each roughly doubles the last, which is what makes them read as levels rather than noise. Before this the page used eleven values between 0 and 64, and the two commonest (24 and 32) were close enough to be the same gap under two names.
The number that mattered is 28. Body copy is 16px on a 26px line, and paragraphs were 16px apart, 0.62 of a line, so the space between paragraphs was tighter than the space between lines inside them, and the eye had nothing telling it where one idea ended. Bullets were worse at 0.33. A paragraph gap must be at least one line; that is the whole rule, and it is why the step is 28 and not 24.
Radii are the same kind of decision. Square is the platform: Home, About and the deck contain zero rounded corners. The case studies spent a while at 12px, which made them the only rounded surfaces on the site. A live audit found 43 elements at 4px, 10 pills, and six at 12px, exactly as the comment warned. Writing a rule down is not applying it.
Vertical rhythm
Bars at true size.
12px (inside one component (label → value, item → item)
28px (between paragraphs, and a block and its lead-in
56px (between blocks: prose ↔ image ↔ box
96px (between groups within a section
224px. Between sections (Section's pt-40 sm:pt-56)
Two blocks in a row close up to 12px automatically, by adjacency ([data-block] + [data-block]): a run of stat cards or screens is one thing cut into pieces, and 56px between the pieces makes each read as a separate statement. data-block="apart" restores 56 where the blocks genuinely are separate statements.
Layout widths
Bars to scale against the 1152px container.
max-w-6xl (72rem) (the content column
max-w-3xl (48rem) (case-study reading column
max-w-2xl (42rem) (Statement's cap
max-w-xl (36rem) (Prose's cap
232px (rail lane (168) + 4rem gap, lg+
px-6 (24px). The page gutter
Radii
0. Square
Every card, panel and image frame
2px. Focus ring
The sitewide:focus-visible outline
4px. Buttons
GlowButton, staged images
full (pills
SkillChips, avatar ring, status dot
Focus indicator
Sitewide base rule, wrapped in:where() so it has ZERO specificity. Any component wanting its own treatment still wins without !important. There is deliberately no outline:none anywhere, since:focus-visible only fires for keyboard users.
Before this rule, exactly one element on the site had a designed focus state. Everything else fell back to the browser default, which is a different shape and colour on every platform and reads as unstyled on a near-black page.
Foundation
Two-tone claim
the four case studies
Why it exists
One sentence cut at the full stop: the setup recedes to foreground/45, the payoff lands at full strength. The sentence dims and then lights up as you read it, so the contrast carries the meaning and no extra structure has to.
It exists to avoid a two-column grid. Subscriptions UI has already used the ProblemPair box six times by the time you reach its Impact line; saying the same before/after in one line of type, with tone doing the work, is a different instrument for the same job.
What recedes must be CONTEXT, never DATA. That is the rule the device shares with ProblemPair, which deliberately does NOT tone its two halves: it splits one continuous unit, so value carries the whole contrast. Dimming half of a card that is already separated by a border reads as the card being disabled instead.
Specs
Dim half
text-foreground/45. Display sizes only, never running text
Bright half
full foreground, inherited
Sizes in use
18 to 44px (text-lg through text-[44px]) across nine uses
Cut
at the full stop, where the sentence turns
Behaviour
- THE PAYOFF SHOULD BE SHORTER THAN THE SETUP. Impact works because its payoff (35 chars) is half its setup (76). Subscriptions UI's Product Manager line was cut after 'Product Manager' first (56 characters of setup against 145 of payoff. And a long bright tail reads as a wall rather than a punch, so the grey was extended to run almost the whole sentence.
- THREE USES PER CASE STUDY, MAXIMUM. The same dose as the Statement primitive, and for the same reason: the effect lives on being rare. Subscriptions UI spends all three (the cover lead, The Challenge, Impact); Hoop Carpool spends one.
- Size follows length. Free Trial's closing claim runs 345 characters and sits at 24px rather than Subscriptions UI's 44px. At 44 it would be a wall. Shortening the copy is what would earn the bigger size.
- It is not a component. Nine hand-written spans, because the cut point is a judgement about that specific sentence. Which is also why the ratio and the ceiling above are written down rather than enforced.
The device at its two working sizes
Changing a subscription plan used to take the development team and a release. Now the retailer does it themselves.
Hoop had a product defined on paper and a first version of the app. As the only designer, I rebuilt it from research to release.
Foundation
Elevation
primitives.tsx · globals.css
Why it exists
There are only four colour tokens and two font tokens in this system, and that is not an omission. It is the point. What would be a token elsewhere is a recipe repeated verbatim here: the lit top edge appears 13 times across 6 files as the same string, because it is the one depth cue that survives on a near-black page.
A drop shadow does very little here: it needs something lighter than itself to fall onto, and the body panel is #0B0B0B. So the shadows below are mostly family resemblance rather than depth. The real work is done by the fill, the hairline and the lit edge.
Shadow recipes
The literal strings, and where each is used.
Card
inset 0 1px 0 white/8, plus 0 6px 16px -4px black/60. StatRow, ProblemPair.
Conclusion
inset 0 1px 0 white/10, plus 0 25px 50px -12px black/70. WhyBox, Impact. Deepens to black/90 on hover.
Dealt card
shadow-2xl black/70 → black/90 when lifted. Testimonials.
The conclusion recipe spells its second layer out longhand for a mechanical reason: Tailwind's shadow-2xl and an arbitrary inset both write box-shadow, so they cannot be stacked as two utilities. The second would simply replace the first.
Layout custom properties
Computed values the CSS keeps as variables, because each encodes the same idea: the distance from the viewport edge to the content column.
Specs
--zig-x / --zig-y
max(1.5rem, (100vw - 72rem)/2 + 1.5rem), and that × 0.5774. The zigzag panels' diagonal. The rise is pinned to the run by tan(30°), so the cut angle holds at every viewport; the flat plateau it leaves is exactly the width of the content.
--rule-left / --rule-right
Measured per word in Hero.tsx, so each headline underline spans exactly the viewport. The first version overshot a viewport-width each side and let overflow clip it. Which put 59% of the animation off-screen and made the duration meaningless.
--cs-ratio / --cs-natural
Per-image, set inline by Zoomable so the lightbox can size as min(92vw, max(82vh × ratio, natural width)). Only the element knows these two numbers, which is why they are properties rather than a fixed width.
Breakpoints
Tailwind's defaults, unmodified. But three of them carry site-specific meaning.
Specs
sm · 640px
The big one. Below it the deck's media panel becomes a static grid row, the contact tree stops forking sideways, the header nav gives way to the sheet, and most type steps down.
lg · 1024px
Where the case-study rail appears, taking 232px (168px lane + 4rem gap) out of the content column. Which is why.cs-rule has two values and Shot's hero size switches here.
xl · 1280px
Used only for grid density on this reference page; the site itself caps at max-w-6xl (1152px) and stops growing before it.
Foundation
Motion
globals.css · framer variants
Why it exists
One speed per gesture, everywhere it appears. Background lines all draw at 3000ms, verticals and horizontals alike. They ran at 1600 and 3000 until 13 Sep 2026, on the argument that a horizontal crosses the reading axis and needed longer; the split held only while the two never appeared together. The About's foot draws both at once, and at two speeds the frame arrived in two pieces.
Every animation respects prefers-reduced-motion, and the trade is always the same: keep the information, drop the travel. The card trace still shows its drawn edge, the marquee still shows its list. They just arrive instead of moving.
Line draw (ease-out-expo)
cubic-bezier(0.16, 1, 0.3, 1)
The house drawing curve: bg-line-grow, TraceButton, TraceCta, ContactCta's tree, the testimonial deal.
Background lines
3000ms, both orientations
One speed, sitewide. `.bg-line-grow` is the only vertical draw there is, so changing it lands on Home, the Hero, the case studies and the About together.
Cover morph
500ms · cubic-bezier(0.45, 0, 0.25, 1)
View transition: a clicked card's photo travels into the case-study backdrop; the old snapshot fades in 240ms.
Case-study entrance
1200ms · cubic-bezier(0.22, 1, 0.36, 1)
cs-rise-a/b/c, staggered 0/180/480ms; the backdrop settles backward over 1400ms.
Card deal (THROW)
1.15s · cubic-bezier(0.16, 1, 0.3, 1)
Testimonials, thrown in from x ±140 as the card reaches mid-screen.
Touch trace
1.1s → 0.8s → 0.5s, sequential
ProjectCard's line on touch devices: left edge, bottom edge, arrow. Each delay is the previous segment's delay plus its duration, so it reads as one stroke turning a corner.
Springs
220/26 · 400/34 · 300/24 · 300/20
GlowButton halo, header marker, active nav label, testimonial lift (stiffness/damping).
Hover transitions
300ms ease-out · media 700ms
Button padding/border/colour; ProjectCard image scale to 1.04.
Component
ProjectCard
ProjectCard.tsx
Why it exists
The editorial project card, shared by Selected work on Home and Other projects at the foot of every case study. Deliberately not a box: typography does the work, and hover traces a single white line around the card's left and bottom edges that resolves into an arrow head.
The kind line is the site cyan and not the project's own accent. It used to take the per-project colour, which put red, violet and purple side by side in the last viewport of every case study. Cyan rather than foreground/55 because “View case study” at the foot of the same card is already 55% at this exact size and tracking. Matching it would make the card open and close on two identical-looking labels.
Specs
Media
aspect-[5/4] · object-cover · overflow-hidden
Kind line
MiniHeading label (14 / 0.14em / 500, accent)
Title
text-2xl · 700 · uppercase · leading-[1.05] · tracking-tight
Description
text-sm · leading-relaxed · foreground/55
CTA
font-nav · text-sm · 500 · tracking-[0.14em] · foreground/55 → foreground
Behaviour
- Hover scales the photo to 1.04 over 700ms and traces the left edge, the bottom edge, then the arrow head.
- On touch there is no hover, so CardTrace arms the same gesture from an IntersectionObserver. The trace plays on a CLOCK (1.1s + 0.8s + 0.5s), not a scroll timeline. A scroll-linked version shipped first and was abandoned: the stroke is continuous, so the arrow is necessarily last, and 'last' in a view timeline meant the card was already leaving the top of the screen.
- It stays a server component: the trace lives in its own client component, and ViewTransition works in RSC.
- The image carries the morph name project-shot-<slug>, so clicking the card sends its photo travelling into the case-study cover backdrop.
- sizes is measured at nine viewports rather than derived from the grid. The old flat 33vw ignored the container cap, its padding and the gutters, running 1.39x over at 1440px.
Live components

Design Sprint
Subscriptions UI
Subscription management platform that let Ocado's retail partners build, launch and run their own plans.
View case study
Startup
Hoop Carpool
A sustainable mobility startup helping companies and universities reduce emissions, save on travel costs, and optimize parking.
View case studyThe code keeps a second media branch (the cut-out mockup floating over a 60% blurred accent bloom at opacity-20. As the fallback for a project with no staged render. Every live project has one, so it renders nowhere today.
Component
Testimonial card
Testimonials.tsx (module-private)
Why it exists
Testimonials as a dealt pile, one card per scroll beat. The carousel this replaced hid two thirds of the content behind arrows nobody clicks. Each card is thrown in from the side it settles toward, overlapping the one before it.
The sizes inside it are a ranking, arrived at by measurement. The portrait was once 192px of a 421px card (46%) while the quote it illustrated was 118px (28%). The picture of the person was bigger than what the person said. It overshot to 112 next, at which point the decorative quote glyph became the largest thing in the card at 1.5x the face. The order the card now states, largest first, is person, then quote, then ornament.
It is deliberately not a button. The lift conveys no information. The quote is fully readable either way, and nothing expands or navigates. It carried role="button" and aria-expanded for a while, which announced “…227 characters of quote…, button, collapsed” and then did nothing when activated.
Specs
Card
border-white/10 · bg-black · px-6 pb-8 pt-6 (sm: px-12 pb-10 pt-8) · shadow-2xl black/70
Avatar
h-32 w-32 (sm: h-36 w-36) · rounded-full · border-white/20 · bg-[#141414] · -mt-12/-mt-14
Name
text-2xl sm:text-3xl · 700 · uppercase · leading-none
Role
MiniHeading micro, muted
Quote
text-lg sm:text-xl · 400 · italic · leading-relaxed · foreground/80
Behaviour
- Dealt on scroll from x ±140 (1.15s ease-out-expo), deliberately late: the bottom 45% of the viewport does not count as in view, so the reader finishes one card before the next lands.
- Hover arms the lift after 1400ms. A cursor crossing the card on the way down the page should not set three cards off in a row. Touch gets the same moment from a tap.
- Lift: scale 1.018 (spring 300/20), shadow black/70 → /90, a corner-to-corner border-image gradient (white 10% → 28%) fading in, and a skewed shine sweep (via-white/[0.11], skewX -28°).
- The lifted card jumps to z-50, clear of the pile; resting cards stack by index so later ones land on top.
- The quote is weight 400 so the name can hit at 700 (Satoshi has no 600, so there is no middle step to soften the jump, which is the point.
- The card has no overflow-hidden, because the avatar must break out past its top edge; the shine gets its own clipping layer instead.
Replica. Classes verbatim, runtime states not frozen

Miguel was the soul of our team, creative, committed, and relentlessly user-focused. His design vision still defines core parts of our product.
Avatar fallback, when a person has no headshot
Initials, font-nav 500, tracking 0.08em, foreground/55 on #141414.
Component
Eyebrow
Eyebrow.tsx
Why it exists
The numbered section label on Home and About, “01 / Selected work”. It used to carry its own voice (11px / 0.35em / 400), the last survivor of the pre-consolidation label zoo: at 11px with a third of an em of tracking it read as legal print, and it named the biggest sections on the site.
It now delegates to MiniHeading's label size, so a section label on Home and a step marker inside a case study are literally the same style rather than two things that merely rhyme. It stays its own component because the name says what the thing IS at those seven call sites. And if the eyebrow ever wants to diverge again, this is where that decision goes.
01 / Selected work
02 / Kind words
03 / Say hi
Component
Case-study primitives
case-study/primitives.tsx
Why it exists
The filled-card family: black fill, white/10 hairline, and the lit top edge that is the only depth cue that survives on a near-black page. A lit edge reads as a made object rather than a drawn rectangle; a drop shadow does not, because it needs something lighter than itself to fall onto.
Each one exists to rank a specific kind of content. WhyBox is a conclusion in a box, so its body sits one step above Prose and clearly below Statement. ProblemPair keeps both bodies at the same tone on purpose: dimming the problem was tried and reverted, because what gets de-emphasised must be context, never data. And the problem statement is data the reader needs to understand the solution beside it.
Behaviour
- StatRow's columns track the count, so three stats sit on one line and a lone stat spans the full width with no holes to patch.
- The bullet is a short horizontal DASH, not a dot, 8px long, 2px thick, round-capped. The marker's top nudge is spelled out twice (11px at 16/26, 14px at 18/29) because a mark on a flex row only sits on the text's optical centre if pushed down by half the difference between line-height and mark height.
- MetaRow looks its icons up by label string, so a case study using a fifth or differently-named meta label renders no icon.
- WhyBox children land inside a <p>: never pass a list or block element, since a <ul> cannot legally nest in a <p> and React throws a hydration mismatch.
WhyBox · ProblemPair · StatRow · MetaRow
Why?
The reasoning card that closes a phase: accent italic panel title, body one step above Prose at foreground/80.
Problem
The problem box: muted label, white/10 border.
Solution
The solution box: accent label, accent/20 border. The pair's only difference beyond the label.
Participants
5
moderated, remote sessions
Sessions
45 min
interview + tasks
- Role
- Product Designer
- Timeline
- 6 weeks
BulletList · Quote · SkillChips
- The bullet is a dash: 8px long, 2px thick, round-capped, accent.
- List body sits at 16/18 with relaxed leading, foreground/70. One step up from Prose, so a list reads as the enumerated thing it is rather than a continuation of the paragraph above.
A pull quote from a research participant. Accent/50 left rule, italic, foreground/80.
Component
SplitCard
primitives.tsx
Why it exists
A card split in two: an argument on the left, the evidence for it on the right, with the screen running to the card's own edges. One component used by two case studies, and that is the point of it. Subscriptions UI's late requirements and Map Implementation's benchmark patterns are the same object, and they were two hand-built lookalikes that had already drifted apart in padding, alignment and how the image was treated.
The card is a floor, not a fixed height. At a fixed height it clipped copy: the version before this one swallowed 77px of a late requirement with no sign that it had. 348px is two thirds of the 520 it started at, and dropping the small index label from the text column is what made that realistic. It was ~46px spent on a number the ghost behind it already says.
Specs
Fill
#141414 · square · overflow-hidden
Grid
sm:grid-cols-2, even split · lg:min-h-[348px]
Text column
px-6 py-10 (sm: px-10 py-12), top-aligned
Slot
no padding · min-h-[260px] sm:[360px] lg:0
Ghost numeral
text-[9rem] · 700 · white opacity-[0.06] · translate-y-[0.111em]
Behaviour
- The card IS the grid, not a wrapper around one: min-h on a wrapper leaves its child at content height, so the image slot would stop short of a card that had grown.
- lg: only, and not out of laziness. Below it the text column narrows, the same paragraph wraps into far more lines, and a height fixed for the wide case would clip it.
- object-cover, so every card in a run paints the same rectangle. The cost is accepted rather than overlooked: cover crops whatever does not match the slot's ratio, and the fix for a bad crop is the FILE, not the CSS.
- translate-y-[0.111em] on the ghost was measured by painting the digits to a canvas and scanning for the lowest inked pixel (with leading-none the line box is 1em while bold Satoshi occupies more.
Live. The slot falls back to a Placeholder with no shot
The argument
The left column takes whatever labels and paragraphs the section needs, top-aligned so two cards in a run start their text at the same height. The slot on the right runs the card's full height, hard against its edge.
Component
ValidationColumns
primitives.tsx
Why it exists
A research session as an editorial three-column spread: hairline-separated columns, each carrying its figure at display size with a giant faint echo of that same figure behind it.
It replaces a StatRow. The same icon-tile card used four other times on the page. The numbers here are the evidence that the testing actually happened, and as one more row of chrome they read as decoration.
The ghost repeats what the column says, and ghost is its own prop rather than derived from position: a blanket 01/02/03 index was built first and dropped, because it put a second, larger number beside the real one and the eye read the wrong one. Pass an index only when the column has no figure of its own.
Behaviour
- Moved here from SubscriptionsUI.tsx on 19 Aug 2026, for the same reason SplitCard moved: Map Implementation needed the same grid, and the alternative was a second hand-built copy.
- itemScale switches the items between 18/24 full white ('figure', where they stand in for a numeral) and 16/18 ('body', BulletList's exact size, for columns whose items are short sentences). A real step on the type scale, not a new number.
- overflow-hidden on each column has to stay: a ghost glyph wider than its column pushes the whole page into horizontal scroll, which cost a debugging round on Hoop Carpool's longer section names.
- It carries cs-rule itself so every spread closes against the background line, rather than two of six reaching the edge because they happened to sit inside a Phase.
Live
Participants
moderated, remote
Tasks
- Find an address
- Refine the pin
Outcome
all five completed
Component
Figures
primitives.tsx · Shot / ShotGrid / Placeholder
Why it exists
Every figure is click-to-enlarge, by default rather than per call. A reader should not have to discover which images happen to open; if some do and some do not, the ones that do not read as broken.
The hero size is not a fourth step on the same ladder. It leaves the ladder. sm/md/lg are caps inside the 48rem reading column, which is why every product screen measured 688–707px however large its source was: a 2931×3807 export rendered at 707, a 4.1× reduction, under a line calling it the complete flow ready for handover. On a portfolio whose argument is that the execution is the proof, the largest image on the page was the decorative cover backdrop. Aria-hidden, 40% opacity, unreadable by design.
Specs
sm
max-w-sm (384px inside the reading column
md (default)
max-w-lg (512px
lg
max-w-3xl, 768px
hero
no cap + cs-rule, 872px from lg up, the full column below. For the ONE screen a section is about.
Caption
text-sm sm:text-base · italic · foreground/50
Behaviour
- sizes is derived from the cap rather than left to the caller, because a missing sizes fails silently and expensively: Next writes an x-descriptor srcset off the DECLARED width, so a DPR-2 phone fetches the 3840px variant of a 1920px slide to paint it at 327.
- Animated formats are detected from the extension and skip the optimiser: Next re-encodes to WebP/AVIF and keeps only the FIRST FRAME, so an animated GIF silently renders as a still with no error anywhere. Those take the pausable branch instead, which satisfies WCAG 2.2.2.
- ShotGrid builds its sizes string from the cols prop, subtracting the gutters the grid actually spends. A hardcoded string would be right for one caller and wrong for the rest.
- The lightbox floors at the image's OWN pixel width. Sizing as min(92vw, 82vh × ratio) was a trap for tall images: measured at 1440×900, a 1040×1401 board rendered 548px in the 'enlarged' view against 768px inline. Enlarging made it smaller.
Shot, default size, with its caption
Placeholder. The dashed stand-in for a shot not yet taken
Component
Insight
primitives.tsx
Why it exists
A research finding as a headline, its supporting detail, the participant's own words, and what the team decided to do about it, the four parts of a finding kept as four parts rather than flattened into one grey paragraph.
The quote and the ideas are a pair (the evidence and the decision it forced. So they are the same object: same padding, same size, same grey, same label voice. Told as an italic pull-quote above a bulleted list they stopped reading as one thought.
The three cells carry the page's trio of fills in order, black to #0A0A0A to #141414, so the block lightens as it moves from what happened to what to do about it. No shadows: the cells touch, so a relief would fall onto the cell below rather than onto the page.
Live
People trusted the map pin more than the address text.
Every participant dragged the pin to confirm, even when the typed address was already correct.
What they said
“I know it's right, but I want to see it on the map.”
What I’d do
Lead with the map, not the field.
Keep the pin draggable after a match.
Component
Section
primitives.tsx
Why it exists
The case-study section wrapper: the step marker, the oversized ghost watermark, the heading, and 224px of padding above it.
Its one subtlety is the first-child override. The first block after a heading drops one step of the rhythm, 56 → 28, because a heading has to sit closer to the text it introduces than to anything else on the page. At the full block gap it floated between its own section and the one above. It is done by position ([&>*:first-child]:mt-7) rather than by giving Prose a smaller margin, because the tightening belongs to the position: the same Prose two blocks down still wants its 56.
Behaviour
- The ghost is anchored to the heading, not to the top of the section, so the generous section padding stays clear and the watermark never collides with whatever came before.
- The heading takes a case-study-only size (26px on mobile) passed as a prop rather than changing SectionHeading's default, which also serves Home, About, the deck, Testimonials and ContactCta.
- The first-child override is guarded on `title`: with no heading there is nothing to hug, and the first child keeps the normal gap.
Live (padding trimmed so the sample fits the frame
02
The challenge
The first block after the heading sits 28px below it, not 56. Close enough to read as this heading's text.
Tool
Playground
live props
Why it exists
Three components whose props are a choice rather than content, and all three share a problem: the wrong pick is invisible in isolation and obvious in comparison.
MiniHeading's nine size × tone combinations each look reasonable alone. Statement's variant is decided by a grammar test nobody remembers under deadline. And TraceButton's two draw directions cannot be compared at all unless you can replay them on demand.
MiniHeading (size × tone
size
tone
Design sprint
<MiniHeading size="label" tone="accent">
Statement (variant
variant
Conclusions
A label: a noun phrase naming the block below it. Upright.
TraceButton. Draw direction
from
Sides: the near edges fork from their own centres, then four half-runs travel the top and bottom and meet in the middle. Used by TraceCta, where a line runs in horizontally.
Tool
Source audit
109 files scanned at build
Why it exists
Every number in this section is counted from the source at build time, not written down by hand. Which is the entire point of it.
This codebase keeps its rules in docblocks, and the recurring failure those docblocks describe is always the same shape: the rule was written down and then not applied. The StatRow comment says it outright. A live audit found six cards still at 12px radius, the only rounded surfaces left on the platform, eighteen lines under a sentence in bold saying they must not be. Writing a rule down is not applying it.
So this reads the tree and reports what is actually there. Add a seventh grey or a fifth opacity level and the page says so on the next load, instead of continuing to describe a system that no longer exists. The reference page excludes itself from the scan. Otherwise it would be reading its own homework.
Radii
Square is the platform. The sanctioned set is 0, 2px (focus ring), 4px (buttons and staged images) and full (pills).
2px radius
1 uses
1 files
Focus ring (globals.css base rule)
rounded-[4px]
15 uses
10 files
Buttons, staged images
rounded-full
17 uses
12 files
Pills, avatar ring, the dash bullet, status dot
rounded-md
1 uses
1 files
Mobile nav sheet rows
rounded-lg
0 uses
0 files
Outside the sanctioned set.
rounded-xl
0 uses
0 files
Outside the sanctioned set.
rounded-2xl
0 uses
0 files
Outside the sanctioned set.
rounded-[8px] / [12px] / [16px]
0 uses
0 files
Outside the sanctioned set.
Clean. Nothing outside the sanctioned set. The 12px cards the StatRow comment warns about are genuinely gone, not just documented as gone.
Text ramp
Every text-foreground/NN level in the tree, by frequency of level. The documented ramp is 50 / 55 / 70 / 75 / 80 plus full.
text-foreground/85
1 uses
1 files
Outside the sanctioned set.
text-foreground/80
25 uses
13 files
text-foreground/75
15 uses
11 files
text-foreground/70
50 uses
27 files
text-foreground/55
62 uses
29 files
text-foreground/50
12 uses
6 files
text-foreground/45
14 uses
5 files
text-foreground/40
4 uses
3 files
Outside the sanctioned set.
2 levels off the ramp. A level outside the documented five is a new rank nobody decided on. Either it should join the ramp, or it should become the nearest one that is already there.
The lit edge
The recipe the Elevation section calls a token in all but syntax. Counting it is what makes that claim checkable rather than rhetorical.
inset 0 1px 0 white/8–10
24 uses
9 files
Accent reach
text-accent
23 uses
17 files
bg-accent
22 uses
15 files
border-accent
6 uses
5 files
accent with opacity
6 uses
4 files
Label adoption
MiniHeading exists so labels stop being improvised. The hand-rolled trackings are not automatically wrong (the nav, footer and rail are documented non-users. But the number should stay small and known.
<MiniHeading>
71 uses
16 files
tracking-[0.14em]
25 uses
16 files
tracking-[0.28em]
4 uses
4 files
tracking-[0.35em]
2 uses
2 files
The eyebrow voice — a documented non-user
Off-palette colours
The strongest check here, because it catches the one thing a class-name scan cannot: a hardcoded colour that should have been a token.
#ffd27a
2 uses
components/about/LorePresenter.tsx, components/about/LoreScene.tsx
#6b4423
2 uses
components/about/LoreScene.tsx, components/about/PixelBoard.tsx
#532f1c
2 uses
components/about/LoreScene.tsx
#8a4c41
2 uses
components/about/LoreScene.tsx
#0d131d
1 uses
app/globals.css
#172639
1 uses
app/globals.css
#ffeacc
1 uses
components/PixelCharacter.tsx
#e8c39a
1 uses
components/PixelCharacter.tsx
#fde68a
1 uses
components/about/LorePresenter.tsx
#e0bf5f
1 uses
components/about/LorePresenter.tsx
#d9c261
1 uses
components/about/LorePresenter.tsx
#b89b45
1 uses
components/about/LorePresenter.tsx
#3a2a1a
1 uses
components/about/LorePresenter.tsx
#aecbe8
1 uses
components/about/LorePresenter.tsx
#7fa3c6
1 uses
components/about/LorePresenter.tsx
#8fadc9
1 uses
components/about/LorePresenter.tsx
#6c8cab
1 uses
components/about/LorePresenter.tsx
#1f3247
1 uses
components/about/LorePresenter.tsx
#f5f4f0
1 uses
components/about/LorePresenter.tsx
#dcd9d2
1 uses
components/about/LorePresenter.tsx
#9c988f
1 uses
components/about/LorePresenter.tsx
#171019
1 uses
components/about/LoreScene.tsx
#241722
1 uses
components/about/LoreScene.tsx
#38202e
1 uses
components/about/LoreScene.tsx
#523036
1 uses
components/about/LoreScene.tsx
#6f4038
1 uses
components/about/LoreScene.tsx
#8f5639
1 uses
components/about/LoreScene.tsx
#ad6d3d
1 uses
components/about/LoreScene.tsx
#c98a47
1 uses
components/about/LoreScene.tsx
#3f2531
1 uses
components/about/LoreScene.tsx
#2a181f
1 uses
components/about/LoreScene.tsx
#8a5a33
1 uses
components/about/LoreScene.tsx
#3a2114
1 uses
components/about/LoreScene.tsx
#f2e6c8
1 uses
components/about/LoreScene.tsx
#f4a05a
1 uses
components/about/LoreScene.tsx
#f6cf67
1 uses
components/about/LoreScene.tsx
#fadf8e
1 uses
components/about/LoreScene.tsx
#f2eee4
1 uses
components/about/LoreScene.tsx
#f7b06a
1 uses
components/about/LoreScene.tsx
#4d2f3f
1 uses
components/about/LoreScene.tsx
#875146
1 uses
components/about/LoreScene.tsx
#55663a
1 uses
components/about/LoreScene.tsx
#4c5c33
1 uses
components/about/LoreScene.tsx
#3d4a2c
1 uses
components/about/LoreScene.tsx
#a05b4d
1 uses
components/about/LoreScene.tsx
#f4e7c9
1 uses
components/about/LoreTitle.tsx
#9c6b3d
1 uses
components/about/PixelBoard.tsx
#4b4743
1 uses
components/about/PixelBoard.tsx
#3e3a36
1 uses
components/about/PixelBoard.tsx
#a9c9f5
1 uses
content/case-studies/SubscriptionsUI.tsx