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Sentient OS

B2B · YC Fall 2026

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Automated design study · full homepage

Dark, center-aligned stacked product story with soft geometry and video-led proof.

Sentient OS - Proactive Intelligence with on-device AI opens with “Your Mac, sentient.” in a center-aligned stacked hero.
Evidence & method · 2 capture notes
Source
https://sentient-os.ai/
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.
  • 8 responsive breakpoint declarations were inspectable.
  • 6 stylesheets were 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

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

System overview

Hero
stacked · center
Surface
dark
Density
sparse
Content width
1600px full-width canvas
Confidence
medium
Primary action
Download for macOS

Color system

Dark 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 41.
Surface 2

Surface

Repeated container or section fill; relative occurrence score 25.
Surface 3

Surface

Repeated container or section fill; relative occurrence score 20.
Primary text

Primary text

Observed display foreground with 21.0:1 contrast against the captured canvas.
Secondary text

Secondary text

Observed reading foreground; measured canvas-reference contrast is 7.4:1.
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; Geist to body text; Geist Mono to body-small, label text.

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

Your Mac, sentient.

Instrument Serif · 60px/63px · weight 400 · tracking -1.5px · color rgb(255, 255, 255)
heading

Our thesis.

Instrument Serif · 36px/45px · weight 400 · tracking 0px · color rgb(255, 255, 255)
body

All the AI you use today only works when you type in a prompt. Truly proactive AI is different: it…

Geist · 15.5px/25.1875px · weight 400 · tracking 0px · color rgba(255, 255, 255, 0.600)
body-small

Sentient runs every night at 3 AM, as long as it's open in your menu bar & your Mac's plugged in

Geist Mono · 10px/15px · weight 400 · tracking 0.8px · color rgba(255, 255, 255, 0.549)
label

Sentient-OS-Labs/sentient-os

Geist Mono · 10px/15px · weight 400 · tracking 1.6px · color rgba(255, 255, 255, 0.451)

Spacing & shape

Spacing

Base unit
4px
Section gap
40px
Container
24px
12px24px16px20px40px4px32px14px8px6px

Shape

Soft geometry is the dominant shape voice. Elevation is selectively reinforced with shadow.

Pills
9999px
Containers
10px
Media
10px
Buttons
0px
Inspect borders & shadows · 10
Borders
1px solid rgba(255, 255, 255, 0.102)1px solid rgba(255, 255, 255, 0.298)1px solid rgba(255, 255, 255, 0.141)1px solid rgba(255, 255, 255, 0.122)1px solid rgb(255, 255, 255)
Shadows
rgba(0, 0, 0, 0.6) 0px 8px 24px 0pxrgba(0, 0, 0, 0.85) 0px 0px 24px 0pxrgba(255, 255, 255, 0.55) 0px 0px 6.4px 0pxrgba(142, 166, 255, 0.6) 0px 0px 6.4px 0pxrgba(0, 0, 0, 0.65) 0px 18px 60px 0px

Component grammar

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

Hero

Opening proposition

1 observed

Stacked, center-aligned opening anchored by “Download for macOS”.

Inspect 4 properties
Pattern
stacked
Alignment
center
Heading
Instrument Serif · 60px / 400
Media
video-led

Navigation

Global wayfinding

1 observed

Static navigation with 3 visible actions in the desktop opening.

Inspect 7 properties
Text
#ffffff
Border
none
Radius
0px
Padding
0px 32px 0px 32px
Type
Geist · 16px / 400
Position
static
Height
64px

Primary action

Conversion

1 observed

“Download for macOS” is the strongest first-viewport action by semantic intent and visual contrast.

Download for macOS
Inspect 6 properties
Background
#ffffff
Text
#171717
Border
none
Radius
9999px
Padding
14px 32px 14px 32px
Type
Geist · 16px / 500

Media frame

Visual proof

4 observed

4 style-matched media elements were found among 24 rendered candidates; cover fitting and 10px are the most repeated treatments.

Inspect 4 properties
Fit
cover, fill, contain
Ratios
1.41, 1.50, 1.18, 1.26, 1.23
Radius
10px, 0px
Candidate pool
24

Footer

Closing navigation

1 observed

3 visible actions close the page on a rgba(255, 255, 255, 0.039) surface.

Inspect 7 properties
Background
rgba(255, 255, 255, 0.039)
Text
#ffffff
Border
1px solid rgba(255, 255, 255, 0.102)
Radius
0px
Padding
20px 64px 20px 64px
Type
Geist · 16px / 400
Links
3

Layout & narrative

The homepage continues through 7 observed sections, moving from the opening proposition into Our thesis, Questions, answered, While you sleep, your Mac understands your entire life.

Structure
Stacked product narrative
Hero pattern
Stacked hero: message leads into visual proof within the opening
Grid
3 columns
Closing
Utility footer with 3 actions
Full section sequence · 7
  1. Our thesis.
  2. Questions, answered.
  3. While you sleep, your Mac understands your entire life.
  4. To create a knowledge base of everything.
  5. So you wake up to your work finished in one click.
  6. One more thing. Meet Sidekick.
  7. Seared Scallops with Saffron Risotto

Imagery, motion & responsive

Imagery

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

cover fitting · 10px repeated radius
Inspect imagery inventory
Composition
Multiple visual elements share the first viewport.
Inventory
23 images/canvas elements and 1 video across the analyzed homepage.

Motion

12 declared keyframes and 40 active animations were inspectable at capture; observed timing uses 0.2s, 0.3s, 0.4s.

Reduced-motion rules detected
Inspect motion inventory
Libraries
CSS / browser-native or bundled source not identifiable
Keyframes
shine, enter, exit, swipe-out-left, swipe-out-right, swipe-out-up, swipe-out-down, sonner-fade-in, sonner-fade-out, sonner-spin, film-logo-glow-spin, glow-spin
Durations
0.2s, 0.3s, 0.4s, 0.1s, 0.15s
Easings
ease, ease, ease, linear, ease-out
States
transition-all, hover, focus, active, disabled

Mobile

The same 3 visible navigation actions remain at mobile width. Hero remains center-aligned; mobile heading size is 36px.

Primary content reads as a single-column mobile flow.
Inspect responsive test
Viewport
390 × 844
Overflow
No horizontal overflow detected

Reproduction guidance

Do

  • Pair the observed #000000 canvas with #ffffff primary copy before adding secondary surfaces.
  • Use Instrument Serif at 60px/63px, weight 400, for the primary display moment.
  • Reserve the strongest first-viewport contrast for “Download for macOS” within the center-aligned stacked hero.
  • Video led media acts as the page’s primary visual proof rather than decoration.

Don’t

  • Do not mix in arbitrary radii; 9999px is the repeated treatment on pills.
  • Do not reuse the #ffffff action color across decorative elements; keep its interactive emphasis selective.
  • Do not introduce extra type families beyond Instrument Serif and Geist and Geist Mono.
  • Do not copy transition-all declarations; keep only purposeful transform or opacity motion.