{
  "variant": "interlock",
  "construction": "two tangent elliptical arcs (base) + concentric offset accent crossing at the waist",
  "base": {
    "rx": 30,
    "ry": 20,
    "sweep": "230° (−38° to −268°)",
    "stroke": 13,
    "colour": "#04171F"
  },
  "flow": {
    "offset": 11,
    "stroke": 5.4,
    "gradient": [
      "#10BBD1",
      "#2FE3A2"
    ],
    "crossings": 1,
    "note": "G1-continuous cubic through the crossing; accent draws over the base"
  },
  "aspectBaseOnly": 0.7849,
  "aspectWithFlow": 0.9398,
  "capHeight": 68.6,
  "wordmarkWidth": 635.4,
  "markHeight": "1.38 × cap height",
  "gap": "0.46 × cap height",
  "smallSizeRule": "below 40 px the accent is dropped and the base thickened — see favicon-32/16 and icon-mono",
  "curves": "exact arc→cubic, α = 4/3·tan(Δt/4), 3 spans per bowl"
}