{
  "$description": "Primitive tier: what exists. Raw values with no opinion about use. From the agent-ready starter kit, tokenstoagents.ai/kit. Rename freely; keep the tier discipline.",
  "color": {
    "gray": {
      "50":  { "$value": "#FAFAFA", "$type": "color", "$description": "Lightest surface gray." },
      "100": { "$value": "#F4F4F5", "$type": "color", "$description": "Subtle background gray." },
      "300": { "$value": "#D4D4D8", "$type": "color", "$description": "Border-weight gray." },
      "500": { "$value": "#71717A", "$type": "color", "$description": "Mid gray, muted text weight." },
      "700": { "$value": "#3F3F46", "$type": "color", "$description": "Strong gray." },
      "950": { "$value": "#0A0A0A", "$type": "color", "$description": "Near-black, maximum text contrast." }
    },
    "red": {
      "100": { "$value": "#FEE2E2", "$type": "color", "$description": "Light red tint." },
      "500": { "$value": "#EF4444", "$type": "color", "$description": "Mid red." },
      "600": { "$value": "#DC2626", "$type": "color", "$description": "Deep red, text-contrast weight." }
    },
    "white": { "$value": "#FFFFFF", "$type": "color", "$description": "White." }
  },
  "space": {
    "1": { "$value": "4px",  "$type": "dimension", "$description": "Base unit." },
    "2": { "$value": "8px",  "$type": "dimension", "$description": "2x base." },
    "3": { "$value": "12px", "$type": "dimension", "$description": "3x base." },
    "4": { "$value": "16px", "$type": "dimension", "$description": "4x base." },
    "6": { "$value": "24px", "$type": "dimension", "$description": "6x base." },
    "8": { "$value": "32px", "$type": "dimension", "$description": "8x base." }
  },
  "font": {
    "size": {
      "100": { "$value": "0.875rem", "$type": "dimension", "$description": "Small text." },
      "200": { "$value": "1rem",     "$type": "dimension", "$description": "Body text." },
      "300": { "$value": "1.25rem",  "$type": "dimension", "$description": "Large text." },
      "500": { "$value": "2rem",     "$type": "dimension", "$description": "Heading." }
    },
    "weight": {
      "regular": { "$value": 400, "$type": "fontWeight", "$description": "Body weight." },
      "medium":  { "$value": 500, "$type": "fontWeight", "$description": "Emphasis weight." },
      "bold":    { "$value": 700, "$type": "fontWeight", "$description": "Heading weight." }
    }
  },
  "radius": {
    "small":  { "$value": "4px", "$type": "dimension", "$description": "Tight corner." },
    "medium": { "$value": "8px", "$type": "dimension", "$description": "Default corner." }
  }
}