{
  "schema_version": 1,
  "chart_type": "cartesian",
  "meta": {
    "title": "各渠道季度营收",
    "locale": "zh-CN",
    "quality_profile": "showcase"
  },
  "data": {
    "columns": [
      { "id": "quarter", "type": "string", "values": ["第一季度", "第二季度", "第三季度", "第四季度"] },
      { "id": "direct", "type": "number", "unit": "万元", "values": [1240, 1380, 1510, 1720] },
      { "id": "partner", "type": "number", "unit": "万元", "values": [860, 910, 1040, 1180] }
    ]
  },
  "encoding": {
    "x": { "column": "quarter", "scale": "band" },
    "y": { "label": "营收（万元）" }
  },
  "series": [
    { "id": "direct", "mark": "bar", "y": "direct", "label": "直销", "role": "primary" },
    { "id": "partner", "mark": "bar", "y": "partner", "label": "渠道伙伴", "role": "comparison" }
  ],
  "cards": [
    { "title": "结论", "items": ["直销与渠道伙伴营收均逐季增长，第四季度合计达 2,900 万元。", "两者全年增速接近（直销 +39%，渠道伙伴 +37%），渠道结构基本稳定在 41% 左右。"] }
  ]
}