# 4SI Online Brand Resources 2.1

This is the compact public package for partners, press, integrations, and
approved third-party communication.

## Start here

1. Read `Brand-Guide/4SI-Brand-Guide-for-Partners-v2.1.pdf`.
2. Use the corporate logo when 4SI is the subject or sender.
3. Use the exact Presence signature when the platform or a public product is the
   subject.
4. Prefer SVG. Use PNG only when the destination cannot use vector artwork.

## Public architecture

- Company: 4SI
- Platform: 4SI Presence, shortened to Presence after first reference
- Products: Presence Key, Presence Layer, Presence Home

## Folder map

- `01-Corporate-Logo` - corporate lockup, symbol, and wordmark
- `02-Presence-Platform` - Presence platform signature
- `03-Presence-Products` - Key, Layer, and Home signatures
- `04-Digital` - symbol exports and public design tokens
- `05-Reference` - usage terms and type-source note
- `06-Web-Resources` - website copy, manifest, and page implementation
- `Brand-Guide` - concise partner guidelines
- `Downloads` - website-ready grouped ZIP downloads

## Core rules

- Corporate logo: entirely black or entirely white.
- Never recolor the particle.
- Never reconstruct the signatures.
- Never create a combined 4SI plus Presence product lockup.
- Do not imply certification, endorsement, or partnership without written approval.

The current public source is `by4si.com/brand`.
