{
  "fontFamily": {
    "$type": "fontFamily",
    "body": {
      "$value": "'Montserrat', 'Helvetica Neue', Arial, sans-serif",
      "$description": "Primary font — Montserrat. Used for headings (h1-h6), body text, labels, and all UI elements"
    },
    "display": {
      "$value": "'Noto Serif SC', Georgia, 'Times New Roman', serif",
      "$description": "Display font — Noto Serif SC. Elegant serif for hero/display text only. Adds warmth and gravitas at large sizes"
    },
    "mono": {
      "$value": "'JetBrains Mono', 'Fira Code', Consolas, monospace",
      "$description": "Monospace font — for reference numbers (FA-2026-00847), tabular pricing data, and code"
    }
  },
  "fontSize": {
    "$type": "dimension",
    "$description": "Font size scale. General-purpose sizes (2xs–4xl) plus display-specific sizes for hero/marketing text.",
    "2xs":  { "$value": "0.6875rem", "$description": "11px — smallest UI text: compact captions, compact overlines" },
    "xs":   { "$value": "0.75rem",   "$description": "12px — small text: captions, labels, overlines, body/xs" },
    "sm":   { "$value": "0.875rem",  "$description": "14px — body small, labels, helper text" },
    "base": { "$value": "1rem",      "$description": "16px — default body text, heading/6, label/lg" },
    "md":   { "$value": "1.125rem",  "$description": "18px — body large, heading/5" },
    "lg":   { "$value": "1.25rem",   "$description": "20px — heading/4" },
    "xl":   { "$value": "1.5rem",    "$description": "24px — heading/3" },
    "2xl":  { "$value": "1.875rem",  "$description": "30px — heading/2" },
    "3xl":  { "$value": "2.25rem",   "$description": "36px — heading/1" },
    "4xl":  { "$value": "3rem",      "$description": "48px — reserved (legacy)" },
    "display": {
      "$description": "Display-specific sizes for hero and marketing text. Used exclusively with Noto Serif SC.",
      "sm":   { "$value": "2rem",     "$description": "32px — display/sm, smallest display text" },
      "3":    { "$value": "2.5rem",   "$description": "40px — display/3" },
      "2":    { "$value": "3.25rem",  "$description": "52px — display/2" },
      "1":    { "$value": "4rem",     "$description": "64px — display/1" },
      "hero": { "$value": "5rem",     "$description": "80px — display/hero, largest display text" }
    },
    "mobile": {
      "$description": "Reduced font sizes for mobile breakpoints (< 600px). Display and headings scale down; body sizes stay constant.",
      "displayHero": { "$value": "2rem",      "$description": "32px — mobile display/hero (from 80px desktop)" },
      "display1":    { "$value": "1.75rem",   "$description": "28px — mobile display/1 (from 64px desktop)" },
      "display2":    { "$value": "1.5rem",    "$description": "24px — mobile display/2 (from 52px desktop)" },
      "display3":    { "$value": "1.375rem",  "$description": "22px — mobile display/3 (from 40px desktop)" },
      "displaySm":   { "$value": "1.25rem",   "$description": "20px — mobile display/sm (from 32px desktop)" },
      "h1":          { "$value": "1.625rem",  "$description": "26px — mobile heading/1 (from 36px desktop)" },
      "h2":          { "$value": "1.375rem",  "$description": "22px — mobile heading/2 (from 30px desktop)" },
      "h3":          { "$value": "1.25rem",   "$description": "20px — mobile heading/3 (from 24px desktop)" },
      "h4":          { "$value": "1.125rem",  "$description": "18px — mobile heading/4 (from 20px desktop)" },
      "h5":          { "$value": "1rem",      "$description": "16px — mobile heading/5 (from 18px desktop)" },
      "h6":          { "$value": "0.875rem",  "$description": "14px — mobile heading/6 (from 16px desktop)" }
    }
  },
  "fontWeight": {
    "$type": "fontWeight",
    "regular":  { "$value": 400, "$description": "Regular weight — captions, display text (serif carries inherent weight)" },
    "medium":   { "$value": 500, "$description": "Medium weight — body text, labels. Slightly bolder than regular for improved readability" },
    "semibold": { "$value": 600, "$description": "Semibold — overlines, button text, navigation" },
    "bold":     { "$value": 700, "$description": "Bold — all headings (h1-h6)" }
  },
  "lineHeight": {
    "$type": "number",
    "$description": "Generic line-height scale. Typography variants use specific values for precise control.",
    "tight":   { "$value": 1.25,  "$description": "Tight leading — large headings, display text" },
    "snug":    { "$value": 1.375, "$description": "Snug leading — sub-headings, labels, small text" },
    "normal":  { "$value": 1.5,   "$description": "Normal leading — default body text, optimal readability" },
    "relaxed": { "$value": 1.75,  "$description": "Relaxed leading — large body text, long-form content" }
  },
  "letterSpacing": {
    "$type": "dimension",
    "$description": "Generic letter-spacing scale. Typography variants use specific values for precise control.",
    "tighter": { "$value": "-0.02em", "$description": "Tighter tracking — large display text" },
    "tight":   { "$value": "-0.01em", "$description": "Tight tracking — headings" },
    "normal":  { "$value": "0em",     "$description": "Normal tracking — body text, most content" },
    "wide":    { "$value": "0.02em",  "$description": "Wide tracking — captions, small text" },
    "wider":   { "$value": "0.05em",  "$description": "Wider tracking — labels, UI text" },
    "widest":  { "$value": "0.08em",  "$description": "Widest tracking — overlines, uppercase text" }
  }
}