{
  "project": "雪线之上 · 吉林冰雪经济目标可视化交互系统",
  "version": "2026.10-Final",
  "coordinate_system": "WGS84_TO_LOCAL_PROJECTION",
  "bounding_box": {
    "min_lat": 41.0,
    "max_lat": 44.5,
    "min_lng": 121.6,
    "max_lng": 131.3
  },
  "key_locations": [
    {"id": "changbai", "name": "长白山主峰天池", "lng": 128.06, "lat": 42.00, "elevation": 2691, "role": "世界级粉雪核心极"},
    {"id": "changchun", "name": "长春市（省会都会圈）", "lng": 125.32, "lat": 43.88, "elevation": 222, "role": "冰雪综合服务与装备中枢"},
    {"id": "jilin", "name": "吉林市（万科松花湖/北大湖）", "lng": 126.55, "lat": 43.84, "elevation": 195, "role": "超级雪场集聚地"},
    {"id": "tonghua", "name": "通化市（新中国滑雪摇篮）", "lng": 125.94, "lat": 41.73, "elevation": 372, "role": "传统滑雪名城"},
    {"id": "yanbian", "name": "延边州（延吉/长白山北坡）", "lng": 129.51, "lat": 42.90, "elevation": 180, "role": "民俗与边境冰雪风情"}
  ],
  "policy_targets": {
    "season_2027_2028": {"tourists_billion": 2.3, "spending_billion_cny": 4200},
    "season_2029_2030": {"tourists_billion": 3.0, "spending_billion_cny": 5400},
    "growth_rate": {"tourists": "+30.4%", "spending": "+28.6%"},
    "annual_supply_tasks": {
      "sports_events": ">= 300 / year",
      "ice_rinks": ">= 500 / year",
      "parks": ">= 100 / year"
    }
  },
  "econometrics": {
    "ols_slope": 1745.2,
    "r_squared": 0.5137,
    "monte_carlo_probability": "88.7%",
    "leontief_multiplier": "1 : 3.82"
  }
}