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Simulithic

B2B · YC Fall 2026

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Automated design study · full homepage

Light, center-aligned visual-first product story with sharp geometry and image-led proof.

Simulithic — Simulate product changes before you ship opens with “Simulate any experiment.
Evidence & method · 2 capture notes
Source
https://www.simulithic.com/
Captured
2026-09-08
Extractor
2.5.0
Evidence
hero, middle, closing, mobile
  • Automated interpretation; editorial review is pending.
  • Animated or layered text alternatives were detected; the analysis records the most visually prominent state at capture.
  • The hero heading was read from semantic heading markup.
  • 7 responsive breakpoint declarations were inspectable.
  • 1 stylesheet was inspectable; 0 cross-origin stylesheets were unavailable to rule inspection.
  • Computed styles describe the captured render; source design tokens and proprietary font files were not copied.

Captured screens

2026-09-08 · source viewport 1600 × 1000

Simulithic hero homepage design evidence. Hero viewport evidence; animated text state captured.
Hero1600 × 1000
Simulithic mid-page homepage design evidence. Mid-page viewport evidence; animated text state captured.
Mid-page1600 × 1000
Simulithic closing homepage design evidence. Closing viewport evidence; animated text state captured.
Closing1600 × 1000
Simulithic mobile homepage design evidence. Mobile viewport evidence; animated text state captured.
Mobile390 × 844

System overview

Hero
visual-led · center
Surface
light
Density
sparse
Content width
1600px full-width canvas
Confidence
medium
Primary action
Get early access

Color system

Light surfaces use 8 repeated semantic colors; the primary action carries the strongest interactive emphasis.

Canvas

Page canvas

Dominant rendered page background.
Surface 1

Surface

Repeated container or section fill; relative occurrence score 148.
Surface 2

Surface

Repeated container or section fill; relative occurrence score 117.
Surface 3

Surface

Repeated container or section fill; relative occurrence score 24.
Primary text

Primary text

Observed display foreground; its canvas-reference contrast is 1.0:1 and may rely on a local hero surface.
Secondary text

Secondary text

Observed reading foreground; measured canvas-reference contrast is 4.7:1.
Action

Primary action

Fill used by the dominant first-viewport action.
Border

Border and divider

Most repeated inspectable border color.

Typography

The observed type system assigns Instrument Serif to display, heading text; Instrument Sans to body, body-small, label text.

Metric previews use the observed CSS values. Source font files are not bundled, so unavailable families fall back locally.
display

Simulate any experiment. Ship the winner.

Instrument Serif · 80px/84.8px · weight 400 · tracking -1.92px · color rgb(255, 251, 245) · preview scaled
heading

Experiment as fast as you can build.

Instrument Serif · 56px/58.24px · weight 400 · tracking -1.4px · color rgb(255, 251, 245)
body

Simulated users skim, hesitate, and abandon carts at the same rates your real users do.

Instrument Sans · 15.5px/26.35px · weight 400 · tracking 0px · color rgb(114, 114, 114)
body-small

Test any variant before a human sees it. Lift and confidence intervals in minutes.

Instrument Sans · 14.5px/23.925px · weight 400 · tracking 0px · color rgb(114, 114, 114)
label

Get early access

Instrument Sans · 13.5px/20.25px · weight 500 · tracking 0px · color rgb(255, 251, 245)

Spacing & shape

Spacing

Base unit
4px
Section gap
40px
Container
16px
16px40px30px26px10px18px8px28px20px12px

Shape

Sharp geometry is the dominant shape voice. Separation relies on borders and surface contrast rather than shadow.

Containers
1px
Pills
999px
Media
0px
Inputs
0px
Buttons
0px
Inspect borders & shadows · 3
Borders
1px solid rgb(240, 240, 240)1px solid rgba(255, 251, 246, 0.549)
Shadows
None observed

Component grammar

Token-based examples, not original components. Source fonts may fall back locally.

Hero

Opening proposition

1 observed

Visual led, center-aligned opening anchored by “Get early access”.

Inspect 4 properties
Pattern
visual-led
Alignment
center
Heading
Instrument Serif · 80px / 400
Media
image-led

Navigation

Global wayfinding

1 observed

Persistent navigation with 5 visible actions in the desktop opening.

Inspect 8 properties
Background
#f9f9f9
Text
#262626
Border
none
Radius
0px
Padding
0px 0px 0px 0px
Type
Instrument Sans · 16px / 400
Position
sticky
Height
65px

Primary action

Conversion

1 observed

“Get early access” is the strongest first-viewport action by semantic intent and visual contrast.

Get early access
Inspect 6 properties
Background
#fffbf5
Text
#0a5bb5
Border
none
Radius
999px
Padding
14px 28px 14px 28px
Type
Instrument Sans · 15px / 500

Form control

Input and selection

1 observed

1 style-matched form control instance was found among 1 candidates; properties describe the dominant observed cluster.

Example input
Inspect 6 properties
Text
#fffbf5
Border
none
Radius
0px
Padding
10px 0px 10px 0px
Type
Instrument Sans · 15px / 400
Candidate pool
1

Media frame

Visual proof

4 observed

4 style-matched media elements were found among 6 rendered candidates; fill fitting and 0px are the most repeated treatments.

Inspect 4 properties
Fit
fill, cover
Ratios
1.00, 1.66, 3.59
Radius
0px
Candidate pool
6

Footer

Closing navigation

1 observed

5 visible actions close the page on a transparent surface.

Inspect 6 properties
Text
#262626
Border
none
Radius
0px
Padding
0px 0px 0px 0px
Type
Instrument Sans · 16px / 400
Links
5

Layout & narrative

The homepage continues through 7 observed sections, moving from the opening proposition into Connect once, then test everything, Agents grounded in real user behavior, Anything you would normally A/B test.

Structure
Visual marquee narrative
Hero pattern
Visual marquee: imagery carries most of the opening surface
Grid
3 columns
Closing
Utility footer with 5 actions
Full section sequence · 7
  1. Connect once, then test everything.
  2. Agents grounded in real user behavior.
  3. Anything you would normally A/B test.
  4. Experiment as fast as you can build.
  5. Connect your data
  6. Build your population
  7. Run the experiment

Imagery, motion & responsive

Imagery

Image led media acts as the page’s primary visual proof rather than decoration.

fill fitting · square-edged frames
Inspect imagery inventory
Composition
Multiple visual elements share the first viewport.
Inventory
6 images/canvas elements and 0 videos across the analyzed homepage.

Motion

4 declared keyframes and 26 active animations were inspectable at capture; observed timing uses 0.28s, 0.35s, 2.8s.

Reduced-motion rules detected
Inspect motion inventory
Libraries
CSS / browser-native or bundled source not identifiable
Keyframes
word-reveal, fade-up-in, sky-settle, haze-drift
Durations
0.28s, 0.35s, 2.8s, 0.2s, 1s
Easings
ease, ease, ease, cubic-bezier(0.22, 1, 0.36, 1), linear
States
hover, active, disabled

Mobile

Desktop navigation reduces from 5 visible actions to 2. Hero remains center-aligned; mobile heading size is 46px.

Observed multi-column desktop regions collapse to a single-column mobile flow.
Inspect responsive test
Viewport
390 × 844
Overflow
No horizontal overflow detected

Reproduction guidance

Do

  • Pair the observed #fcfbf9 canvas with #fffbf5 primary copy before adding secondary surfaces.
  • Use Instrument Serif at 80px/84.8px, weight 400, for the primary display moment.
  • Reserve the strongest first-viewport contrast for “Get early access” within the center-aligned visual-led hero.
  • Image led media acts as the page’s primary visual proof rather than decoration.

Don’t

  • Do not mix in arbitrary radii; 1px is the repeated treatment on containers.
  • Do not reuse the #fffbf5 action color across decorative elements; keep its interactive emphasis selective.
  • Do not introduce extra type families beyond Instrument Serif and Instrument Sans.
  • Do not add card shadows; the source separates content without repeated elevation.