Design System Specification · v2.4 LIBRARY EDITION

Terracotta & Warm Paper

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The v2.4 production design system featuring warm paper surfaces (#F9F7F4), terracotta accents (#B84724), dark ink typography (#0F0E0D), and muted editorial tones.

Design Foundations

Primary
#B84724
Terracotta Accent
Surface
#F9F7F4
Warm Paper Base
Container Low
#F0EDE8
Subtle Tint Card
On Surface
#0F0E0D
High-Contrast Ink
Secondary
#5A5550
Muted Editorial
Neutral Stone
#e4e2df
Divider & Border

Typographic Hierarchy

font-headline · Fraunces 400
Building systems that hold up under pressure.
font-headline · Subheadings
Section Title · Current Correctness Is Not Enough
font-body · Manrope (400 / 500)

A lot of refactoring is not caused by bad code. It is caused by design decisions that never had to become explicit when the system was small.

font-label · Space Grotesk
ARCHITECTURE SPECIFICATION · P95 LATENCY

Primitives & Indicators

Links & Actions

Primary Button Secondary Button
Animated Underline Link Interactive Link Hover Effect →

Geometric Indicators

Success / Secure State
Warning / Degraded State
Danger / Vulnerability State
Superscript DotTip (Hoverable)

Hover over this dot marker for inline explanation: Iterative HNSW

Content & Data Tables

Layer Latency (p95) Security Boundary Status Marker
Identity Token 1.2 ms Gateway JWT PASS
Path Resolution 3.4 ms In-Memory Org Tree PASS
Vector Retrieval 14.8 ms PostgreSQL ltree ITERATIVE
Warm Light Code Block
export function buildLtreeFilter(paths: AuthorizedPaths) 
  // Safe parameterized ltree ancestor matching
  return `dc.path <@ :inheritedPath::ltree`;

Callout System