[
  {
    "id": "contours-minor",
    "type": "line",
    "source": "contours",
    "source-layer": "contours",
    "filter": ["all", ["!=", ["%", ["to-number", ["get", "ele"]], 100], 0], [">", ["to-number", ["get", "ele"]], 0]],
    "minzoom": 12,
    "paint": {
      "line-color": [
        "interpolate", ["linear"], ["to-number", ["get", "ele"]],
        0, "#b6905f",
        600, "#a67e50",
        1400, "#8c7458",
        2400, "#7a716b"
      ],
      "line-opacity": ["interpolate", ["linear"], ["zoom"], 12, 0.5, 14, 0.65],
      "line-width": ["interpolate", ["linear"], ["zoom"], 12, 0.5, 16, 1.1]
    }
  },
  {
    "id": "contours-index",
    "type": "line",
    "source": "contours",
    "source-layer": "contours",
    "filter": ["all", ["==", ["%", ["to-number", ["get", "ele"]], 100], 0], [">", ["to-number", ["get", "ele"]], 0]],
    "minzoom": 11,
    "paint": {
      "line-color": [
        "interpolate", ["linear"], ["to-number", ["get", "ele"]],
        0, "#a3763f",
        600, "#946a3c",
        1400, "#7d6551",
        2400, "#6d6560"
      ],
      "line-opacity": 0.7,
      "line-width": ["interpolate", ["linear"], ["zoom"], 11, 0.8, 16, 2.0]
    }
  },
  {
    "id": "contours-index-label",
    "type": "symbol",
    "source": "contours",
    "source-layer": "contours",
    "filter": ["all", ["==", ["%", ["to-number", ["get", "ele"]], 100], 0], [">", ["to-number", ["get", "ele"]], 0]],
    "minzoom": 13,
    "layout": {
      "symbol-placement": "line",
      "text-field": ["concat", ["to-string", ["round", ["to-number", ["get", "ele"]]]], " m"],
      "text-font": ["NotoSans-Regular"],
      "text-size": ["interpolate", ["linear"], ["zoom"], 13, 9, 16, 11.5],
      "symbol-spacing": 320,
      "text-max-angle": 30,
      "text-padding": 4,
      "text-rotation-alignment": "map",
      "text-pitch-alignment": "viewport",
      "text-allow-overlap": false,
      "text-ignore-placement": false
    },
    "paint": {
      "text-color": "#5f4a28",
      "text-halo-color": "#ffffff",
      "text-halo-width": 1.5,
      "text-halo-blur": 0.4
    }
  }
]