diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_Layers.py b/D03_PlanAnalysis/D03_PlanAnalysis_Layers.py
index 25a991b2e..534b74e5e 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_Layers.py
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_Layers.py
@@ -264,8 +264,6 @@ def slope_layer(
     project_root: Path, models_dir: Path, epsg: int, kind: str = "slope"
 ) -> dict[str, Any]:
     """급경사(`slope`) · 음영기복(`hillshade`) — 지문(격자 파일 · 단계 · 판) 같으면 저장본."""
-    from common_util.common_util_crs import tm_to_lonlat
-
     npz = models_dir / f"dtm_sheet_{SHEET_SURFACE_DEFAULT_METHOD}.npz"
     stamp = file_stamp(npz)
     if stamp is None:
@@ -286,14 +284,19 @@ def slope_layer(
     half = cell / 2
     box = (x[0] - half, y[0] - half, x[-1] + half, y[-1] + half)
     value["box_m"] = [float(v) for v in box]
-    value["box"] = [
-        list(tm_to_lonlat(px, py, epsg))
-        for px, py in ((box[0], box[1]), (box[2], box[1]), (box[2], box[3]), (box[0], box[3]))
-    ]
+    value["box"] = lonlat_corners(box, epsg)
     write_derived(project_root, store_kind, key, value)
     return value
 
 
+def lonlat_corners(box: Any, epsg: int) -> list[list[float]]:
+    """TM 상자 → 경위도 네 귀퉁이(왼쪽 아래부터 돎) — GL 바탕 그림 자리(586)."""
+    from common_util.common_util_crs import tm_to_lonlat
+
+    x0, y0, x1, y1 = (float(v) for v in box)
+    return [list(tm_to_lonlat(px, py, epsg)) for px, py in ((x0, y0), (x1, y0), (x1, y1), (x0, y1))]
+
+
 # ── 보호 · 규제 구역 ─────────────────────────────────────
 
 # (열쇠, 이름, 브이월드 WFS 겹 이름) — `_분석_440-C` 표 1 그대로
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_Router.py b/D03_PlanAnalysis/D03_PlanAnalysis_Router.py
index c5628f21b..80dfd7972 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_Router.py
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_Router.py
@@ -214,7 +214,8 @@ async def plan_layer_raster(project_id: UUID, kind: str = "slope") -> dict[str,
             raise HTTPException(status_code=503, detail=str(error)) from error
         except RuntimeError as error:
             raise HTTPException(status_code=502, detail=str(error)) from error
-        return {"status": "success", "kind": kind, **value}
+        box_lonlat = layers.lonlat_corners(value["box_m"], epsg)
+        return {"status": "success", "kind": kind, **value, "box": box_lonlat}
     if kind not in layers.RASTER_KINDS:
         raise HTTPException(status_code=400, detail=f"없는 그림 겹: {kind}")
     root, epsg, _ = await _layer_root(project_id)
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerDefs.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerDefs.ts
index b49bdf12a..e3a50f9fb 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerDefs.ts
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerDefs.ts
@@ -1,7 +1,8 @@
 /* =============================================================================
  * D03_PlanAnalysis_UI_LayerDefs.ts
- * D03 바탕 겹 정의(PLAN 569-2 · 581-1 · 581-2 · 584-1 · 584-3) — 겹 단추 묶음 · 처음 값 · 보호구역 · 토양형 색 ·
- *   산사태위험지도 범례 · 선 겹(단층 · 지질구조선 · 0차곡) 꼴 · 켬끔 취향 읽기 · 면 겹 채우기 · 선 긋기 · 그림 겹 놓기.
+ * D03 바탕 겹 정의(PLAN 569-2 · 581-1 · 581-2 · 584-1 · 584-3 · 586-2) — 겹 단추 묶음 · 처음 값 · 보호구역 · 토양형 색 ·
+ *   산사태위험지도 범례 · 선 겹(단층 · 지질구조선 · 0차곡) 꼴 · 켬끔 취향 읽기 · 면 겹 채우기 · 선 긋기 · 그림 겹 놓기 ·
+ *   GL 바탕 자료(지물 색 붙이기 · 그림 귀퉁이 · 음영 그늘 그림).
  *   부르는 곳 = `D03_PlanAnalysis_UI_Layers.ts`(받기 · 그리기 차례 · 범례).
  * ========================================================================== */
 
@@ -11,11 +12,13 @@ import { readByKey } from "../A00_Common/b_page_state";
 import {
   drawPreparedLayer,
   normalizedToScreen,
+  type GeoJsonCollection,
   type PreparedLayer,
   type ViewState,
 } from "../B04_PreProcess/B04_PreProcess_UI_MapRender";
 import type { PlanRaster } from "./D03_PlanAnalysis_Api";
 import type { ScreenMap } from "./D03_PlanAnalysis_UI_Map";
+import type { GlImage } from "./D03_PlanAnalysis_UI_MapGl";
 
 export type PlanLayerKey =
   | "satellite"
@@ -268,3 +271,41 @@ export function readPref(key: string): Record<PlanLayerKey, boolean> {
   }
   return on;
 }
+
+/** GL 자료 — 지물마다 그릴 색(`_color`) · 덧 속성을 붙인 사본. */
+export function glTagged(
+  collection: GeoJsonCollection,
+  color: (props: Record<string, unknown>) => string,
+  extra: Record<string, unknown> = {},
+): GeoJsonCollection {
+  return {
+    ...collection,
+    features: (collection.features ?? []).map((feature) => ({
+      ...feature,
+      properties: { ...feature.properties, ...extra, _color: color(feature.properties ?? {}) },
+    })),
+  };
+}
+
+/** GL 그림 자리 — 서버 경위도 귀퉁이(왼쪽 아래부터 돎) → 왼쪽 위부터 · 없으면 null. */
+export function glImage(raster: PlanRaster, url = raster.image): GlImage | null {
+  const box = raster.box;
+  return box?.length === 4 ? { url, corners: [box[3], box[2], box[1], box[0]] } : null;
+}
+
+/** 음영 그늘 그림 — 위성 위 「곱하기 0.75」와 같은 검은 반투명(밝기 g → 투명도 0.75 · (1 − g)). */
+export function shadeImage(image: HTMLImageElement): string {
+  const canvas = document.createElement("canvas");
+  canvas.width = image.naturalWidth;
+  canvas.height = image.naturalHeight;
+  const context = canvas.getContext("2d")!;
+  context.drawImage(image, 0, 0);
+  const pixels = context.getImageData(0, 0, canvas.width, canvas.height);
+  const px = pixels.data;
+  for (let i = 0; i < px.length; i += 4) {
+    px[i + 3] = Math.round(0.75 * (255 - px[i]) * (px[i + 3] / 255));
+    px[i] = px[i + 1] = px[i + 2] = 0;
+  }
+  context.putImageData(pixels, 0, 0);
+  return canvas.toDataURL("image/png");
+}
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerPaint.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerPaint.ts
new file mode 100644
index 000000000..23ac319cd
--- /dev/null
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerPaint.ts
@@ -0,0 +1,258 @@
+/* =============================================================================
+ * D03_PlanAnalysis_UI_LayerPaint.ts
+ * D03 바탕 겹 옛 캔버스 그리기(PLAN 569-2 · 581 · 584 · 586-2) — 그리기 차례 · 색 · 굵기 · 투명도.
+ *   GL 바탕(586-2)이 같은 꼴을 MapLibre 로 그림(`D03_PlanAnalysis_UI_MapGl`) · 이것은 GL 을 못 쓰거나 끈 때.
+ *   부르는 곳 = `D03_PlanAnalysis_UI_Layers.ts`(받기 · 켬끔 · GL 이면 쉼).
+ * ========================================================================== */
+
+import { themeColor } from "@ui/ui_template_palette";
+import type { VWorldMeta } from "../B04_PreProcess/B04_PreProcess_Api_Fetch";
+import {
+  createNormalizer,
+  drawPreparedLabels,
+  lonLatToScreen,
+  pickLevelStep,
+} from "../B04_PreProcess/B04_PreProcess_UI_MapRender";
+import {
+  LINE_KEYS,
+  LINE_LAYERS,
+  ZONE_COLORS,
+  drawRaster,
+  fillLayer,
+  stroke,
+  type PlanLayerKey,
+} from "./D03_PlanAnalysis_UI_LayerDefs";
+import type { Prepared } from "./D03_PlanAnalysis_UI_LayerLegend";
+import type { PlanMapLayer } from "./D03_PlanAnalysis_UI_Map";
+
+/** 바탕 겹(아래 → 위) — 켬끔 · 받은 자료 · 위성 틀 · 위성 그림(음영 곱하기)을 그때그때 읽음. */
+export function createCanvasLayers(opts: {
+  on: Record<PlanLayerKey, boolean>;
+  data: Partial<Prepared>;
+  meta: () => VWorldMeta | null;
+  satellite: () => HTMLImageElement | null;
+}): PlanMapLayer[] {
+  const { on, data } = opts;
+  /** 등고 글 폭 기억(글꼴 하나 · 582). */
+  const labelWidths = new Map<string, number>();
+  return [
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.hillshade || !data.hillshade) return;
+        // 위성 위 = 곱하기(밝은 곳은 그대로 · 그늘만 짙게) · 위성 없으면 그대로
+        if (on.satellite && opts.satellite()) {
+          context.globalCompositeOperation = "multiply";
+          context.globalAlpha = 0.75;
+        }
+        drawRaster(context, map, data.hillshade);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.slope || !data.slope) return;
+        context.globalAlpha = 0.55;
+        drawRaster(context, map, data.slope);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.landslide || !data.landslide) return;
+        context.globalAlpha = 0.6;
+        drawRaster(context, map, data.landslide);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.soils || !data.soils) return;
+        for (const { layer, color } of data.soils.kinds) {
+          const fill = themeColor(color, "#facc15");
+          fillLayer(context, layer, map.view, fill, 0.35, { color: fill, width: 1.4 });
+        }
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.zones || !data.zones) return;
+        for (const [kind, layer] of data.zones.kinds) {
+          const color = themeColor(ZONE_COLORS[kind] ?? "--draw-warning", "#eab308");
+          fillLayer(context, layer, map.view, color, 0.22, { color, width: 1.6 });
+        }
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.bands || !data.bands) return;
+        const road = themeColor("--draw-map-band-road", "#facc15");
+        const stream = themeColor("--draw-map-band-stream", "#22d3ee");
+        fillLayer(context, data.bands.road, map.view, road, 0.16, {
+          color: road,
+          width: 1.2,
+          dash: [6, 4],
+        });
+        fillLayer(context, data.bands.stream, map.view, stream, 0.18, {
+          color: stream,
+          width: 1.2,
+          dash: [6, 4],
+        });
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.cadastral || !data.cadastral) return;
+        context.globalAlpha = 0.8;
+        stroke(context, map, data.cadastral, themeColor("--draw-map-parcel", "#f0abfc"), 0.8);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.water || !data.water) return;
+        const color = themeColor("--draw-map-water", "#0ea5e9");
+        fillLayer(context, data.water, map.view, color, 0.45, { color, width: 1 });
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.building || !data.building) return;
+        const color = themeColor("--draw-map-building", "#fb7185");
+        fillLayer(context, data.building, map.view, color, 0.7, {
+          color: "rgba(0, 0, 0, 0.55)",
+          width: 0.6,
+        });
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        const contour = on.contour && data.contour;
+        if (!contour) return;
+        const color = themeColor("--draw-map-contour", "#ffd68c");
+        const step = pickLevelStep(contour, map.view, 5);
+        context.globalAlpha = 0.7;
+        stroke(context, map, contour, color, 0.8, step);
+        stroke(context, map, contour, color, 1.6, 25); // 계곡선
+        context.globalAlpha = 1;
+        context.font = "10px system-ui, sans-serif";
+        context.textAlign = "center";
+        context.textBaseline = "middle";
+        drawPreparedLabels(
+          context,
+          contour,
+          map.view,
+          color,
+          25,
+          map.uprightRad,
+          "rgba(0, 0, 0, 0.6)",
+          labelWidths,
+        );
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.road || !data.road) return;
+        stroke(context, map, data.road.all, "rgba(0, 0, 0, 0.55)", 3.2);
+        stroke(context, map, data.road.all, themeColor("--draw-map-road", "#f8fafc"), 1.6);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.forestRoad || !data.road) return;
+        context.setLineDash([7, 4]);
+        stroke(context, map, data.road.small, "rgba(0, 0, 0, 0.55)", 3.6);
+        stroke(context, map, data.road.small, themeColor("--draw-map-forest-road", "#f59e0b"), 2);
+        context.setLineDash([]);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        const got = on.forestRoadFile && data.forestRoadFile;
+        if (!got) return;
+        stroke(context, map, got.layer, "rgba(0, 0, 0, 0.55)", 4);
+        stroke(context, map, got.layer, themeColor("--draw-map-forest-road-file", "#ea580c"), 2.4);
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        if (!on.stream || !data.stream) return;
+        const color = themeColor("--draw-map-stream", "#38bdf8");
+        stroke(context, map, data.stream[0], color, 1);
+        stroke(context, map, data.stream[1], color, 2.4);
+      },
+    },
+    ...LINE_KEYS.map((key): PlanMapLayer => ({
+      base: true,
+      draw: (context, map) => {
+        const got = on[key] && data[key];
+        if (!got) return;
+        const { color, width, dash } = LINE_LAYERS[key];
+        context.setLineDash(dash);
+        stroke(context, map, got.layer, "rgba(0, 0, 0, 0.55)", width + 1.6);
+        stroke(context, map, got.layer, themeColor(color, "#f43f5e"), width);
+        context.setLineDash([]);
+      },
+    })),
+    {
+      base: true,
+      draw: (context, map) => {
+        const got = on.landslideZones && data.landslideZones;
+        const meta = opts.meta();
+        if (!got || !meta) return;
+        const color = themeColor("--draw-map-landslide-zone", "#e11d48");
+        // 필지 = 「이 필지 안 어딘가」 테두리만(지정 넓이 ≪ 필지 · 칠하지 않음)
+        context.setLineDash([6, 3]);
+        stroke(context, map, got.parcels, "rgba(255, 255, 255, 0.7)", 3.2);
+        stroke(context, map, got.parcels, color, 1.8);
+        context.setLineDash([]);
+        const normalizer = createNormalizer(meta);
+        context.fillStyle = color;
+        context.strokeStyle = "#ffffff";
+        context.lineWidth = 1.5;
+        for (const point of got.info.points) {
+          const [x, y] = lonLatToScreen(normalizer, map.view, point.lon, point.lat);
+          if (x < -10 || y < -10 || x > map.view.width + 10 || y > map.view.height + 10) continue;
+          context.beginPath();
+          context.arc(x, y, 5, 0, Math.PI * 2);
+          context.fill();
+          context.stroke();
+        }
+      },
+    },
+    {
+      base: true,
+      draw: (context, map) => {
+        const meta = opts.meta();
+        if (!on.place || !data.place || !meta) return;
+        const normalizer = createNormalizer(meta);
+        context.font = "600 11px system-ui, sans-serif";
+        context.textAlign = "center";
+        context.textBaseline = "bottom";
+        context.lineWidth = 3;
+        context.strokeStyle = "rgba(0, 0, 0, 0.7)";
+        context.fillStyle = themeColor("--draw-map-place", "#f8fafc");
+        for (const place of data.place) {
+          const [x, y] = lonLatToScreen(normalizer, map.view, place.lon, place.lat);
+          if (x < -60 || y < -20 || x > map.view.width + 60 || y > map.view.height + 20) continue;
+          map.upright(context, x, y, () => {
+            context.beginPath();
+            context.arc(x, y, 2.5, 0, Math.PI * 2);
+            context.fill();
+            context.strokeText(place.name, x, y - 4);
+            context.fillText(place.name, x, y - 4);
+          });
+        }
+      },
+    },
+  ];
+}
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Layers.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Layers.ts
index c1b783231..2ae96323b 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Layers.ts
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Layers.ts
@@ -15,8 +15,9 @@
  *        건물 → 등고선 → 도로 → 임도 짐작 → 올린 임도망도 → 세류 → 선 겹 → 산사태취약지역 → 지명 → 그은 선.
  *   겹 모두 = 바탕 캔버스(`base` · 582) · 등고선 = 줌 단계 색인 · 글 폭 기억.
  *   범례 = 켠 겹의 받은 범위 안 수 · 넓이(왼쪽 아래 · `D03_PlanAnalysis_UI_LayerLegend`).
- *   GL 바탕 시험(586-1 · 끝 단추 · `aislo:pref:d03.gl` · 처음 = 끔) — 위성 · 급경사 · 지적 · 등고선 · 도로 · 세류를
- *     MapLibre 가 그림(`D03_PlanAnalysis_UI_MapGl`) · 캔버스는 그 겹을 건너뜀(등고 글은 캔버스).
+ *   GL 바탕(586-2 · 처음 = 켬 · 끝 단추 끔 = 옛 캔버스 · `aislo:pref:d03.canvas`) — 겹 스물 · 등고 글 · 지명을
+ *     MapLibre 가 그림(`D03_PlanAnalysis_UI_MapGl`) · 캔버스 바탕 겹은 쉼(등고 간격 셈만) · 받기 · 범례는 같음 ·
+ *     WebGL 못 씀 · 잃음 = 저절로 옛 캔버스 + 알림(취향은 안 바꿈).
  * ========================================================================== */
 
 import { showToast } from "@ui/ui_template_elements";
@@ -34,8 +35,6 @@ import {
 } from "../B04_PreProcess/B04_PreProcess_Api_Fetch";
 import {
   createNormalizer,
-  drawPreparedLabels,
-  lonLatToScreen,
   pickLevelStep,
   type GeoJsonCollection,
   type PreparedLayer,
@@ -61,25 +60,29 @@ import {
   FOREST_ROAD_KINDS,
   GROUPS,
   LAYERS,
-  LINE_KEYS,
   LINE_LAYERS,
   SOIL_COLORS,
   WATER_KEYS,
   ZONE_COLORS,
-  drawRaster,
-  fillLayer,
+  glImage,
+  glTagged,
   loadImage,
   readPref,
-  stroke,
+  shadeImage,
   type PlanLayerKey,
 } from "./D03_PlanAnalysis_UI_LayerDefs";
 import { layerCounts, legendRows, type Prepared } from "./D03_PlanAnalysis_UI_LayerLegend";
-import { createGlBase, GL_KEYS } from "./D03_PlanAnalysis_UI_MapGl";
+import { createCanvasLayers } from "./D03_PlanAnalysis_UI_LayerPaint";
+import { createGlBase, GL_FONT, type GlImage } from "./D03_PlanAnalysis_UI_MapGl";
 import type { PlanMap, PlanMapLayer } from "./D03_PlanAnalysis_UI_Map";
 import type { Vertex } from "./logic/D03_PlanAnalysis_Plan";
 
 const PREF_KEY = "aislo:pref:d03.layers";
-const GL_PREF_KEY = "aislo:pref:d03.gl";
+/** GL 글꼴 미리 받음 — 받기 전에 그린 글자는 대체 글꼴로 굳음(못 받아도 그림). */
+const glFont = (weight: string, text: string): Promise<unknown> =>
+  document.fonts.load(`${weight} 24px "${GL_FONT}"`, text || "가").catch(() => null);
+/** 옛 캔버스로 그림("1") — 처음 = GL. */
+const CANVAS_PREF_KEY = "aislo:pref:d03.canvas";
 /** 등고선을 받아 올 그은 선 둘레(m). */
 const CONTOUR_PAD_M = 600;
 type DataKey = keyof Prepared;
@@ -100,6 +103,8 @@ export interface PlanLayers {
     on: Record<PlanLayerKey, boolean>;
     loaded: PlanLayerKey[];
     counts: Record<string, number>;
+    /** GL 겹마다 화면에 그린 지물 수(보임만 · GL 끔 = 빈 것). */
+    gl: Record<string, number>;
   };
 }
 
@@ -116,9 +121,14 @@ export function createPlanLayers(opts: {
   let uploading = false;
   let meta: VWorldMeta | null = null;
   let satellite: HTMLImageElement | null = null;
-  const gl = createGlBase(projectId);
-  let glOn = readByKey(GL_PREF_KEY) === "1";
-  map.setGl(glOn ? gl : null);
+  /** 음영 GL 그림 — 그대로 · 위성 위 그늘(「곱하기」 꼴). */
+  let hillshade: { plain: GlImage; shade: GlImage } | null = null;
+  const gl = createGlBase(projectId, (why) => {
+    if (!glOn) return;
+    showToast(`그래픽 카드 그림을 못 써 옛 그림으로 — ${why}`, "info");
+    useGl(false);
+  });
+  let glOn = readByKey(CANVAS_PREF_KEY) !== "1";
 
   const buttons = new Map<PlanLayerKey, HTMLButtonElement>();
   const groups = GROUPS.map((group) =>
@@ -150,18 +160,24 @@ export function createPlanLayers(opts: {
   roadGroup.splice(roadGroup.indexOf(buttons.get("forestRoadFile")!) + 1, 0, upload);
   const glButton = createIconButton({
     icon: "gauge",
-    title:
-      "GL 바탕 시험(위성 조각 · 급경사 · 지적 · 등고선 · 도로 · 세류를 그래픽 카드로 · 끔 = 지금 그림)",
+    title: "그래픽 카드 그림(바탕 겹 · 글을 GPU 로 · 끔 = 옛 캔버스 그림)",
     size: 32,
     pressed: glOn,
     onClick: () => {
-      glOn = !glOn;
-      writeByKey(GL_PREF_KEY, glOn ? "1" : "0");
-      glButton.setAttribute("aria-pressed", String(glOn));
-      map.setGl(glOn ? gl : null);
+      writeByKey(CANVAS_PREF_KEY, glOn ? "1" : "0");
+      useGl(!glOn);
     },
   });
   glButton.dataset.layer = "gl";
+  /** GL ↔ 옛 캔버스 — 못 켜면 캔버스(알림은 `onFail`). */
+  function useGl(want: boolean): void {
+    glOn = want && map.setGl(gl);
+    if (!glOn) map.setGl(null);
+    glButton.setAttribute("aria-pressed", String(glOn));
+    void ensure("satellite");
+    showSatellite();
+    map.redrawBase();
+  }
   groups.push([glButton]);
   const tools = createMapTools({ label: "지도 겹", groups });
   const bar = tools.root;
@@ -174,8 +190,9 @@ export function createPlanLayers(opts: {
   legend.className = "d03-plan__legend";
   legend.title = "켠 겹 범례 — 받은 지형 범위 안 수 · 넓이";
 
+  /** 받음 — 위성은 GL 이면 조각(한 장 그림 안 받음). */
   const loadedOf = (key: PlanLayerKey): boolean =>
-    key === "satellite" ? !!satellite : !!data[dataKey(key)];
+    key === "satellite" ? glOn || !!satellite : !!data[dataKey(key)];
 
   function sync(): void {
     for (const def of LAYERS) {
@@ -187,13 +204,15 @@ export function createPlanLayers(opts: {
       button.setAttribute("aria-label", title);
     }
     upload.disabled = !meta || uploading;
-    for (const key of GL_KEYS) gl.setVisible(key, on[key]);
+    for (const def of LAYERS) gl.setVisible(def.key, on[def.key]);
+    gl.setData("hillshade", hillshade && (on.satellite ? hillshade.shade : hillshade.plain));
     const rows = meta ? legendRows(on, data) : [];
     legend.replaceChildren(...rows.map((row) => createLegend(row)));
     legend.hidden = !rows.length;
   }
 
   sync();
+  useGl(glOn);
 
   function toggle(key: PlanLayerKey): void {
     on[key] = !on[key];
@@ -246,6 +265,7 @@ export function createPlanLayers(opts: {
         layer: prepareLayer(info.collection, createNormalizer(at)),
         info,
       };
+      gl.setData("forestRoadFile", info.collection);
       on.forestRoadFile = true;
       writeByKey(PREF_KEY, JSON.stringify(on));
       showToast(
@@ -283,6 +303,7 @@ export function createPlanLayers(opts: {
       features: (collection.features ?? []).filter((feature) => test(feature.properties ?? {})),
     });
     if (key === "satellite") {
+      if (glOn) return; // GL = 조각
       // 범위가 넓어지면 주소가 바뀌어 옛 그림을 안 씀
       const v = `${at.x_min}_${at.x_max}_${at.y_min}_${at.y_max}`;
       satellite = await loadImage(`${getVWorldMapUrl(projectId, "satellite")}&v=${v}`);
@@ -296,12 +317,10 @@ export function createPlanLayers(opts: {
         Math.max(...xs) + CONTOUR_PAD_M,
         Math.max(...ys) + CONTOUR_PAD_M,
       ].map((v) => v.toFixed(0));
-      const collection = await fetchCachedSheetLayer<GeoJsonCollection>(
-        projectId,
-        "도엽_등고선",
-        "route",
-        bbox.join(","),
-      );
+      const [collection] = await Promise.all([
+        fetchCachedSheetLayer<GeoJsonCollection>(projectId, "도엽_등고선", "route", bbox.join(",")),
+        glFont("400", "0123456789-"),
+      ]);
       data.contour = indexLayerLod(prepare(collection, ["등고수치"]));
       gl.setData("contour", collection);
     } else if (key === "stream") {
@@ -330,30 +349,52 @@ export function createPlanLayers(opts: {
     } else if (key === "forestRoadFile") {
       const info = await fetchPlanForestRoads(projectId);
       data.forestRoadFile = { layer: prepare(info.collection), info };
+      gl.setData("forestRoadFile", info.collection);
     } else if (key === "landslideZones") {
       const info = await fetchPlanLandslideZones(projectId);
       data.landslideZones = { parcels: prepare(info.parcels), info };
+      gl.setData("landslideZones", {
+        features: [
+          ...(info.parcels.features ?? []),
+          ...info.points.map((point) => ({
+            type: "Feature",
+            properties: {},
+            geometry: { type: "Point", coordinates: [point.lon, point.lat] },
+          })),
+        ],
+      } as GeoJsonCollection);
       if (info.missing.length)
         showToast(`산사태취약지역 — ${info.missing.join(" · ")} 자료 없음`, "info");
     } else if (key === "slope" || key === "hillshade" || key === "landslide") {
       const raster = await fetchPlanRaster(projectId, key);
-      data[key] = { raster, image: await loadImage(raster.image) };
-      const box = raster.box; // 경위도 귀퉁이(왼쪽 아래부터 돎)
-      if (key === "slope" && box?.length === 4)
-        gl.setData("slope", { url: raster.image, corners: [box[3], box[2], box[1], box[0]] });
+      const image = await loadImage(raster.image);
+      data[key] = { raster, image };
+      const plain = glImage(raster);
+      if (key !== "hillshade") gl.setData(key, plain);
+      else if (plain) hillshade = { plain, shade: glImage(raster, shadeImage(image))! };
     } else if (key === "water") {
       const parts = await Promise.all(
         WATER_KEYS.map((name) => fetchPlanSheetLayer(projectId, name)),
       );
-      data.water = prepare({ features: parts.flatMap((part) => part.features ?? []) });
+      const water = { features: parts.flatMap((part) => part.features ?? []) };
+      data.water = prepare(water);
+      gl.setData("water", water);
     } else if (key === "building") {
-      data.building = prepare(await fetchPlanSheetLayer(projectId, "건물"));
+      const building = await fetchPlanSheetLayer(projectId, "건물");
+      data.building = prepare(building);
+      gl.setData("building", building);
     } else if (key === "zones") {
       const zones = await fetchPlanZones(projectId);
       const kinds = new Map<string, PreparedLayer>();
       for (const kind of Object.keys(zones.summary))
         kinds.set(kind, prepare(pick(zones, (props) => props["kind"] === kind)));
       data.zones = { kinds, summary: zones.summary };
+      gl.setData(
+        "zones",
+        glTagged(zones, (props) =>
+          themeColor(ZONE_COLORS[String(props["kind"])] ?? "--draw-warning", "#eab308"),
+        ),
+      );
       const failed = Object.values(zones.summary).filter((kind) => kind.failed);
       if (failed.length)
         showToast(
@@ -369,6 +410,15 @@ export function createPlanLayers(opts: {
         })),
         summary: soils.summary,
       };
+      const colorOf = new Map(
+        soils.summary.map((soil, i) => [soil.code, data.soils!.kinds[i].color]),
+      );
+      gl.setData(
+        "soils",
+        glTagged(soils, (props) =>
+          themeColor(colorOf.get(props["code"] as never) ?? "", "#facc15"),
+        ),
+      );
     } else if (key === "faults" || key === "lineaments" || key === "zeroOrder") {
       const kind = LINE_LAYERS[key].kind;
       // 0차곡 첫 셈 = 몇 초 — 늦으면 알림
@@ -388,6 +438,7 @@ export function createPlanLayers(opts: {
           count: got.count,
           length_m: got.length_m,
         };
+        gl.setData(key, got.collection);
       } finally {
         window.clearTimeout(slow);
       }
@@ -398,6 +449,16 @@ export function createPlanLayers(opts: {
         road: prepare(info.road.collection),
         info,
       };
+      const band = (name: "stream" | "road", fallback: string): GeoJsonCollection =>
+        glTagged(info[name].collection, () => themeColor(`--draw-map-band-${name}`, fallback), {
+          _band: name,
+        });
+      gl.setData("bands", {
+        features: [
+          ...(band("road", "#facc15").features ?? []),
+          ...(band("stream", "#22d3ee").features ?? []),
+        ],
+      });
     } else {
       const collection = await fetchPlanSheetLayer(projectId, "지명");
       data.place = (collection.features ?? []).flatMap((feature) => {
@@ -407,229 +468,35 @@ export function createPlanLayers(opts: {
         const [lon, lat] = geometry.coordinates as number[];
         return [{ lon, lat, name }];
       });
+      await glFont("600", data.place.map((place) => place.name).join(""));
+      gl.setData("place", {
+        features: data.place.map(({ lon, lat, name }) => ({
+          type: "Feature",
+          properties: { name },
+          geometry: { type: "Point", coordinates: [lon, lat] },
+        })),
+      } as GeoJsonCollection);
     }
   }
 
-  /** 등고 글 폭 기억(글꼴 하나 · 582). */
-  const labelWidths = new Map<string, number>();
+  const canvasLayers = createCanvasLayers({
+    on,
+    data,
+    meta: () => meta,
+    satellite: () => satellite,
+  });
+
+  /** GL 이면 캔버스 바탕 겹은 쉼 — 등고 주곡선 간격(화면 안 가닥 수)만 셈. */
   const layers: PlanMapLayer[] = [
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.hillshade || !data.hillshade) return;
-        // 위성 위 = 곱하기(밝은 곳은 그대로 · 그늘만 짙게) · 위성 없으면 그대로
-        if (on.satellite && satellite) {
-          context.globalCompositeOperation = "multiply";
-          context.globalAlpha = 0.75;
-        }
-        drawRaster(context, map, data.hillshade);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.slope || !data.slope || glOn) return;
-        context.globalAlpha = 0.55;
-        drawRaster(context, map, data.slope);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.landslide || !data.landslide) return;
-        context.globalAlpha = 0.6;
-        drawRaster(context, map, data.landslide);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.soils || !data.soils) return;
-        for (const { layer, color } of data.soils.kinds) {
-          const fill = themeColor(color, "#facc15");
-          fillLayer(context, layer, map.view, fill, 0.35, { color: fill, width: 1.4 });
-        }
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.zones || !data.zones) return;
-        for (const [kind, layer] of data.zones.kinds) {
-          const color = themeColor(ZONE_COLORS[kind] ?? "--draw-warning", "#eab308");
-          fillLayer(context, layer, map.view, color, 0.22, { color, width: 1.6 });
-        }
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.bands || !data.bands) return;
-        const road = themeColor("--draw-map-band-road", "#facc15");
-        const stream = themeColor("--draw-map-band-stream", "#22d3ee");
-        fillLayer(context, data.bands.road, map.view, road, 0.16, {
-          color: road,
-          width: 1.2,
-          dash: [6, 4],
-        });
-        fillLayer(context, data.bands.stream, map.view, stream, 0.18, {
-          color: stream,
-          width: 1.2,
-          dash: [6, 4],
-        });
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.cadastral || !data.cadastral || glOn) return;
-        context.globalAlpha = 0.8;
-        stroke(context, map, data.cadastral, themeColor("--draw-map-parcel", "#f0abfc"), 0.8);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.water || !data.water) return;
-        const color = themeColor("--draw-map-water", "#0ea5e9");
-        fillLayer(context, data.water, map.view, color, 0.45, { color, width: 1 });
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.building || !data.building) return;
-        const color = themeColor("--draw-map-building", "#fb7185");
-        fillLayer(context, data.building, map.view, color, 0.7, {
-          color: "rgba(0, 0, 0, 0.55)",
-          width: 0.6,
-        });
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        const contour = on.contour && data.contour;
-        if (!contour) return;
-        const color = themeColor("--draw-map-contour", "#ffd68c");
-        const step = pickLevelStep(contour, map.view, 5);
-        if (glOn) gl.setContourStep(step); // 선 = GL · 글 = 캔버스
-        if (!glOn) {
-          context.globalAlpha = 0.7;
-          stroke(context, map, contour, color, 0.8, step);
-          stroke(context, map, contour, color, 1.6, 25); // 계곡선
-        }
-        context.globalAlpha = 1;
-        context.font = "10px system-ui, sans-serif";
-        context.textAlign = "center";
-        context.textBaseline = "middle";
-        drawPreparedLabels(
-          context,
-          contour,
-          map.view,
-          color,
-          25,
-          map.uprightRad,
-          "rgba(0, 0, 0, 0.6)",
-          labelWidths,
-        );
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.road || !data.road || glOn) return;
-        stroke(context, map, data.road.all, "rgba(0, 0, 0, 0.55)", 3.2);
-        stroke(context, map, data.road.all, themeColor("--draw-map-road", "#f8fafc"), 1.6);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.forestRoad || !data.road) return;
-        context.setLineDash([7, 4]);
-        stroke(context, map, data.road.small, "rgba(0, 0, 0, 0.55)", 3.6);
-        stroke(context, map, data.road.small, themeColor("--draw-map-forest-road", "#f59e0b"), 2);
-        context.setLineDash([]);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        const got = on.forestRoadFile && data.forestRoadFile;
-        if (!got) return;
-        stroke(context, map, got.layer, "rgba(0, 0, 0, 0.55)", 4);
-        stroke(context, map, got.layer, themeColor("--draw-map-forest-road-file", "#ea580c"), 2.4);
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.stream || !data.stream || glOn) return;
-        const color = themeColor("--draw-map-stream", "#38bdf8");
-        stroke(context, map, data.stream[0], color, 1);
-        stroke(context, map, data.stream[1], color, 2.4);
-      },
-    },
-    ...LINE_KEYS.map((key): PlanMapLayer => ({
-      base: true,
-      draw: (context, map) => {
-        const got = on[key] && data[key];
-        if (!got) return;
-        const { color, width, dash } = LINE_LAYERS[key];
-        context.setLineDash(dash);
-        stroke(context, map, got.layer, "rgba(0, 0, 0, 0.55)", width + 1.6);
-        stroke(context, map, got.layer, themeColor(color, "#f43f5e"), width);
-        context.setLineDash([]);
-      },
+    ...canvasLayers.map((layer): PlanMapLayer => ({
+      ...layer,
+      draw: (c, m) => void (glOn || layer.draw(c, m)),
     })),
     {
       base: true,
-      draw: (context, map) => {
-        const got = on.landslideZones && data.landslideZones;
-        if (!got || !meta) return;
-        const color = themeColor("--draw-map-landslide-zone", "#e11d48");
-        // 필지 = 「이 필지 안 어딘가」 테두리만(지정 넓이 ≪ 필지 · 칠하지 않음)
-        context.setLineDash([6, 3]);
-        stroke(context, map, got.parcels, "rgba(255, 255, 255, 0.7)", 3.2);
-        stroke(context, map, got.parcels, color, 1.8);
-        context.setLineDash([]);
-        const normalizer = createNormalizer(meta);
-        context.fillStyle = color;
-        context.strokeStyle = "#ffffff";
-        context.lineWidth = 1.5;
-        for (const point of got.info.points) {
-          const [x, y] = lonLatToScreen(normalizer, map.view, point.lon, point.lat);
-          if (x < -10 || y < -10 || x > map.view.width + 10 || y > map.view.height + 10) continue;
-          context.beginPath();
-          context.arc(x, y, 5, 0, Math.PI * 2);
-          context.fill();
-          context.stroke();
-        }
-      },
-    },
-    {
-      base: true,
-      draw: (context, map) => {
-        if (!on.place || !data.place || !meta) return;
-        const normalizer = createNormalizer(meta);
-        context.font = "600 11px system-ui, sans-serif";
-        context.textAlign = "center";
-        context.textBaseline = "bottom";
-        context.lineWidth = 3;
-        context.strokeStyle = "rgba(0, 0, 0, 0.7)";
-        context.fillStyle = themeColor("--draw-map-place", "#f8fafc");
-        for (const place of data.place) {
-          const [x, y] = lonLatToScreen(normalizer, map.view, place.lon, place.lat);
-          if (x < -60 || y < -20 || x > map.view.width + 60 || y > map.view.height + 20) continue;
-          map.upright(context, x, y, () => {
-            context.beginPath();
-            context.arc(x, y, 2.5, 0, Math.PI * 2);
-            context.fill();
-            context.strokeText(place.name, x, y - 4);
-            context.fillText(place.name, x, y - 4);
-          });
-        }
+      draw: (_, m) => {
+        if (glOn && on.contour && data.contour)
+          gl.setContourStep(pickLevelStep(data.contour, m.view, 5));
       },
     },
   ];
@@ -643,7 +510,9 @@ export function createPlanLayers(opts: {
     if (changed) {
       satellite = null;
       for (const key of Object.keys(data)) delete data[key as DataKey];
-      for (const key of GL_KEYS) if (key !== "satellite") gl.setData(key, null);
+      hillshade = null;
+      for (const def of LAYERS)
+        if (def.key !== "satellite" && def.key !== "forestRoad") gl.setData(def.key, null);
     }
     map.update({ meta });
     showSatellite();
@@ -660,6 +529,16 @@ export function createPlanLayers(opts: {
       on: { ...on },
       loaded: LAYERS.map((def) => def.key).filter(loadedOf),
       counts: layerCounts(data),
+      gl: Object.fromEntries(
+        (gl.map()?.getStyle().layers ?? [])
+          .filter((layer) => layer.layout?.visibility !== "none")
+          .map((layer) => [
+            layer.id,
+            layer.type === "raster"
+              ? 1
+              : gl.map()!.queryRenderedFeatures({ layers: [layer.id] }).length,
+          ]),
+      ),
     }),
   };
 }
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Map.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Map.ts
index ef846600b..a9d3386a3 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Map.ts
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Map.ts
@@ -11,7 +11,9 @@
  * 캔버스 두 장(582) — 아래 = 위성 · 바탕 겹(`base`) · 위 = 그은 선 · 재기 · 누름 받음.
  *   마우스 움직임 = 위만 다시 그림 · 화면이 바뀌면(옮김 · 확대 · 돌림 · 겹) 둘 다 · 한 화면 한 번(rAF).
  * TM 겹(그은 선 · 재기 · 그림 겹)은 경위도로 바꿔 바탕과 같은 자리(586-0 · `localTmFrame`) — 좌표계를 모르면 옛 꼴.
- * GL 바탕 시험(586-1 · `setGl`) — 맨 아래 MapLibre 가 이 화면을 따라감 · 캔버스 겹은 그 투영으로 그림.
+ * GL 바탕(586 · `setGl`) — 맨 아래 MapLibre 가 이 화면을 따라감 · 캔버스 겹은 그 투영으로 그림.
+ *   카메라 주인 = 이 화면 `view` · 돌림 하나 — 휠 · 가운데 끌기 · 돌림 단추 · 맞춤 · 앞으로 붙을 팬 단추 · 단축키는
+ *   모두 `view` 를 바꾸고 `draw()` → 한 화면 한 번 `glCamera` 로 MapLibre 를 맞춘 뒤 캔버스를 그림.
  * ========================================================================== */
 
 import { createMapTools, mapToolButton } from "@ui/ui_template_map_tools";
@@ -127,8 +129,8 @@ export interface PlanMap {
   redraw: () => void;
   /** 바탕 겹까지 다시 그림(겹 켬끔 · 받음). */
   redrawBase: () => void;
-  /** GL 바탕 켬(MapLibre 를 맨 아래에) · null = 끔(지금 캔버스). */
-  setGl: (gl: GlBase | null) => void;
+  /** GL 바탕 켬(MapLibre 를 맨 아래에 · 참 = 섬 · 거짓 = WebGL 못 씀) · null = 끔(옛 캔버스). */
+  setGl: (gl: GlBase | null) => boolean;
   /** 맞출 점이 들어오게 다시 맞춤. */
   fit: () => void;
   /** 검증 창구 — 작업 좌표계 점 → 화면에 보이는 px(돌린 뒤 · 그리기 전이면 null). */
@@ -526,12 +528,13 @@ export function createPlanMap(events: PlanMapEvents): PlanMap {
     redraw: drawTop,
     redrawBase: draw,
     setGl(next) {
-      if (next === gl) return;
+      if (next === gl) return !!gl;
       gl?.enable(null);
-      gl = next;
-      gl?.enable(root);
+      gl = null;
+      if (next?.enable(root)) gl = next;
       gl?.resize();
       draw();
+      return !!gl;
     },
     fit() {
       refit();
diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_MapGl.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_MapGl.ts
index 5b024dbaf..10251ba5e 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_UI_MapGl.ts
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_MapGl.ts
@@ -1,14 +1,20 @@
 /* =============================================================================
  * D03_PlanAnalysis_UI_MapGl.ts
- * D03 GL 바탕 시험(PLAN 586-1 · 요구 445 B) — 바탕 겹 여섯을 MapLibre(WebGL · BSD-3)로:
- *   위성 조각(서버 대리 z6~19) · 급경사 그림 · 지적 · 등고선(주곡선 · 계곡선 25 m) · 도로 · 세류 · 하천.
- *   그 밖 겹 · 등고 글 · 그은 선 · 재기 · 누름 = 지금 캔버스 그대로(위에 겹침).
- *   카메라 = D03 화면(`ViewState` · 돌림)을 따라감 · 조작은 안 받음(누름은 위 캔버스).
- *   자료 = 지금 받는 GeoJSON 그대로(조각내기는 MapLibre 일꾼 스레드) · 지도가 없어도 자료는 담아 둠.
+ * D03 GL 바탕(PLAN 586-1 · 586-2 · 요구 445 B · 448) — 바탕 겹 스물을 MapLibre(WebGL · BSD-3)로:
+ *   위성 조각(서버 대리 · 서버 기억 z6~19) · 그림 겹(음영 · 급경사 · 산사태위험 = image) ·
+ *   면 겹(산림입지 · 보호구역 · 띠 · 물 면 · 건물 = fill) · 선 겹(지적 · 등고선 · 도로 · 임도 짐작 · 올린 임도망도 ·
+ *   세류 · 단층 · 지질구조선 · 0차곡 · 산사태취약 필지 = line · 점선 포함) · 점(산사태취약 · 지명 = circle) ·
+ *   글(등고 수치 · 지명 = symbol · 겹치면 뺌 · 글꼴 = 화면 Noto Sans KR(OFL · 자체 보관)을 그 자리에서 그림 —
+ *   꼴에 글꼴 주소가 없으면 MapLibre 가 모든 글자를 화면 글꼴로 그림 · 글꼴 조각 파일 없음).
+ *   그은 선 · 재기 · 고르기 · 누름 = 위 캔버스 그대로(위에 겹침).
+ *   카메라 주인 = D03 화면(`ViewState` · 돌림) 하나 — 여기는 따라가기만 · 조작은 안 받음.
+ *   자료 = 지금 받는 GeoJSON 그대로(조각내기는 MapLibre 일꾼 스레드) · 색 = 받는 쪽이 지물에 붙인 `_color`.
+ *   그래픽 카드 · WebGL 이 없거나 잃으면 `onFail` — 부르는 쪽이 옛 캔버스로.
  * ========================================================================== */
 
 import {
   Map as MapLibreMap,
+  type ExpressionSpecification,
   type FilterSpecification,
   type LayerSpecification,
   type SourceSpecification,
@@ -17,138 +23,334 @@ import "maplibre-gl/dist/maplibre-gl.css";
 import { API_BASE_URL } from "@config/config_frontend";
 import { themeColor } from "@ui/ui_template_palette";
 import type { GeoJsonCollection } from "../B04_PreProcess/B04_PreProcess_UI_MapRender";
+import type { PlanLayerKey } from "./D03_PlanAnalysis_UI_LayerDefs";
 
-/** GL 로 옮긴 겹. */
-export type GlLayerKey = "satellite" | "slope" | "cadastral" | "contour" | "road" | "stream";
-export const GL_KEYS: readonly GlLayerKey[] = [
-  "satellite",
-  "slope",
-  "cadastral",
-  "contour",
-  "road",
-  "stream",
-];
+/** 자료 소스(임도 짐작 = 도로 소스를 거름 · 위성 = 조각). */
+export type GlSource = Exclude<PlanLayerKey, "satellite" | "forestRoad">;
 
-/** 급경사 그림 — 주소 + 네 귀퉁이 경위도(왼쪽 위 · 오른쪽 위 · 오른쪽 아래 · 왼쪽 아래). */
+/** 그림 겹 — 주소 + 네 귀퉁이 경위도(왼쪽 위 · 오른쪽 위 · 오른쪽 아래 · 왼쪽 아래). */
 export interface GlImage {
   url: string;
   corners: [[number, number], [number, number], [number, number], [number, number]];
 }
 
+/** 글꼴 — 화면 `@font-face`(ui_template/fonts · OFL) 이름. 미리 받아 둬야 첫 글자가 대체 글꼴로 안 굳음. */
+export const GL_FONT = "Noto Sans KR";
+const GL_FONT_BOLD = [`${GL_FONT} SemiBold`, GL_FONT];
+
 export interface GlBase {
   /** 자료 담기(지도 없어도 · 켤 때 올림) — null = 비움. */
-  setData: (
-    key: Exclude<GlLayerKey, "satellite">,
-    data: GeoJsonCollection | GlImage | null,
-  ) => void;
-  setVisible: (key: GlLayerKey, on: boolean) => void;
+  setData: (source: GlSource, data: GeoJsonCollection | GlImage | null) => void;
+  setVisible: (key: PlanLayerKey, on: boolean) => void;
   /** 등고선 주곡선 간격(m) — 캔버스와 같은 「화면 안 가닥 수」 규칙. */
   setContourStep: (step: number) => void;
-  /** 켬 = 지도를 `parent` 맨 앞에 만듦 · 끔 = 버림. */
-  enable: (parent: HTMLElement | null) => void;
+  /** 켬 = 지도를 `parent` 맨 앞에 만듦(참 = 섬 · 거짓 = WebGL 못 씀) · null = 버림. */
+  enable: (parent: HTMLElement | null) => boolean;
   map: () => MapLibreMap | null;
   /** 화면을 따라감(경위도 가운데 · 줌 · 돌림 도) — 같은 화면에 바로 그림. */
   camera: (center: [number, number], zoom: number, bearingDeg: number) => void;
   resize: () => void;
 }
 
-const HALO = "rgba(0, 0, 0, 0.55)";
+type GlSpec = LayerSpecification & { key: PlanLayerKey; source: GlSource | "satellite" };
 
-const LEVEL = ["to-number", ["get", "등고수치"], 0];
+const HALO = "rgba(0, 0, 0, 0.55)";
+const ROUND = { "line-join": "round", "line-cap": "round" } as const;
+const COLOR: ExpressionSpecification = ["get", "_color"];
+const LEVEL: ExpressionSpecification = ["to-number", ["get", "등고수치"], 0];
 /** 주곡선 = 간격 배수(계곡선도 — 캔버스처럼 계곡선은 두 번 겹쳐 짙음). */
 const minorFilter = (step: number): FilterSpecification =>
   ["==", ["%", LEVEL, step], 0] as unknown as FilterSpecification;
+const INDEX = ["==", ["%", LEVEL, 25], 0] as unknown as FilterSpecification;
+/** 캔버스 점선(px) → MapLibre 점선(선 굵기 배수). */
+const dash = (px: number[], width: number): number[] => px.map((v) => v / width);
 
-/** 겹 차례(아래 → 위)와 꼴 — 캔버스 `D03_PlanAnalysis_UI_Layers` 의 색 · 굵기 · 투명도 그대로. */
-function layerSpecs(step: number): Array<LayerSpecification & { key: GlLayerKey }> {
-  const contour = themeColor("--draw-map-contour", "#ffd68c");
-  const road = themeColor("--draw-map-road", "#f8fafc");
-  const stream = themeColor("--draw-map-stream", "#38bdf8");
-  const parcel = themeColor("--draw-map-parcel", "#f0abfc");
-  const round = { "line-join": "round", "line-cap": "round" } as const;
+/** 선 겹 — 검은 테두리 + 선(점선이면 둘 다 같은 px 무늬). */
+function haloLine(
+  key: PlanLayerKey,
+  source: GlSource,
+  color: string,
+  width: number,
+  pattern: number[] = [],
+  halo = { color: HALO, width: width + 1.6 },
+  filter?: FilterSpecification,
+): GlSpec[] {
+  const line = (id: string, paint: Record<string, unknown>, w: number): GlSpec =>
+    ({
+      key,
+      id,
+      type: "line",
+      source,
+      ...(filter ? { filter } : {}),
+      layout: ROUND,
+      paint: {
+        ...paint,
+        "line-width": w,
+        ...(pattern.length ? { "line-dasharray": dash(pattern, w) } : {}),
+      },
+    }) as GlSpec;
+  return [
+    line(`${key}-halo`, { "line-color": halo.color }, halo.width),
+    line(key, { "line-color": color }, width),
+  ];
+}
+
+/** 면 겹 — 채움 + 테두리(캔버스 `fillLayer` 처럼 테두리 투명도 0.9). */
+function fillEdge(
+  key: PlanLayerKey,
+  source: GlSource,
+  fill: string | ExpressionSpecification,
+  opacity: number | ExpressionSpecification,
+  edge: { color: string | ExpressionSpecification; width: number; dash?: number[] },
+): GlSpec[] {
   return [
-    { key: "satellite", id: "satellite", type: "raster", source: "satellite" },
     {
-      key: "slope",
-      id: "slope",
+      key,
+      id: key,
+      type: "fill",
+      source,
+      paint: { "fill-color": fill, "fill-opacity": opacity },
+    } as GlSpec,
+    {
+      key,
+      id: `${key}-edge`,
+      type: "line",
+      source,
+      layout: ROUND,
+      paint: {
+        "line-color": edge.color,
+        "line-width": edge.width,
+        "line-opacity": 0.9,
+        ...(edge.dash ? { "line-dasharray": dash(edge.dash, edge.width) } : {}),
+      },
+    } as GlSpec,
+  ];
+}
+
+/** 겹 차례(아래 → 위)와 꼴 — 캔버스 `D03_PlanAnalysis_UI_Layers` 의 색 · 굵기 · 투명도 · 차례 그대로. */
+function layerSpecs(step: number): GlSpec[] {
+  const contour = themeColor("--draw-map-contour", "#ffd68c");
+  const place = themeColor("--draw-map-place", "#f8fafc");
+  const landslideZone = themeColor("--draw-map-landslide-zone", "#e11d48");
+  const raster = (key: GlSource | "satellite", opacity: number): GlSpec =>
+    ({
+      key,
+      id: key,
       type: "raster",
-      source: "slope",
-      paint: { "raster-opacity": 0.55, "raster-fade-duration": 0 },
-    },
+      source: key,
+      paint: { "raster-opacity": opacity, "raster-fade-duration": 0 },
+    }) as GlSpec;
+  const lineKind = (key: "faults" | "lineaments" | "zeroOrder", width: number, pattern: number[]) =>
+    haloLine(key, key, themeColor(LINE_COLOR[key], "#f43f5e"), width, pattern);
+  return [
+    raster("satellite", 1),
+    raster("hillshade", 1), // 위성 위 = 「곱하기」와 같은 검은 그늘 그림(받는 쪽이 바꿈)
+    raster("slope", 0.55),
+    raster("landslide", 0.6),
+    ...fillEdge("soils", "soils", COLOR, 0.35, { color: COLOR, width: 1.4 }),
+    ...fillEdge("zones", "zones", COLOR, 0.22, { color: COLOR, width: 1.6 }),
+    ...fillEdge("bands", "bands", COLOR, ["case", ["==", ["get", "_band"], "road"], 0.16, 0.18], {
+      color: COLOR,
+      width: 1.2,
+      dash: [6, 4],
+    }),
     {
       key: "cadastral",
       id: "cadastral",
       type: "line",
       source: "cadastral",
-      layout: round,
-      paint: { "line-color": parcel, "line-width": 0.8, "line-opacity": 0.8 },
-    },
+      layout: ROUND,
+      paint: {
+        "line-color": themeColor("--draw-map-parcel", "#f0abfc"),
+        "line-width": 0.8,
+        "line-opacity": 0.8,
+      },
+    } as GlSpec,
+    ...((): GlSpec[] => {
+      const water = themeColor("--draw-map-water", "#0ea5e9");
+      return fillEdge("water", "water", water, 0.45, { color: water, width: 1 });
+    })(),
+    ...fillEdge("building", "building", themeColor("--draw-map-building", "#fb7185"), 0.7, {
+      color: HALO,
+      width: 0.6,
+    }),
     {
       key: "contour",
       id: "contour-minor",
       type: "line",
       source: "contour",
       filter: minorFilter(step),
-      layout: round,
+      layout: ROUND,
       paint: { "line-color": contour, "line-width": 0.8, "line-opacity": 0.7 },
-    },
+    } as GlSpec,
     {
       key: "contour",
       id: "contour-index",
       type: "line",
       source: "contour",
-      filter: ["==", ["%", LEVEL, 25], 0],
-      layout: round,
+      filter: INDEX,
+      layout: ROUND,
       paint: { "line-color": contour, "line-width": 1.6, "line-opacity": 0.7 },
-    },
+    } as GlSpec,
     {
-      key: "road",
-      id: "road-halo",
-      type: "line",
-      source: "road",
-      layout: round,
-      paint: { "line-color": HALO, "line-width": 3.2 },
-    },
-    {
-      key: "road",
-      id: "road",
-      type: "line",
-      source: "road",
-      layout: round,
-      paint: { "line-color": road, "line-width": 1.6 },
-    },
+      key: "contour",
+      id: "contour-label",
+      type: "symbol",
+      source: "contour",
+      filter: INDEX,
+      layout: {
+        "symbol-placement": "line",
+        "symbol-spacing": 320,
+        "text-field": ["to-string", LEVEL],
+        "text-font": [GL_FONT],
+        "text-size": 10,
+        "text-max-angle": 30,
+        "text-padding": 2,
+      },
+      paint: {
+        "text-color": contour,
+        "text-halo-color": "rgba(0, 0, 0, 0.6)",
+        "text-halo-width": 1.5,
+      },
+    } as GlSpec,
+    ...haloLine("road", "road", themeColor("--draw-map-road", "#f8fafc"), 1.6, [], {
+      color: HALO,
+      width: 3.2,
+    }),
+    ...haloLine(
+      "forestRoad",
+      "road",
+      themeColor("--draw-map-forest-road", "#f59e0b"),
+      2,
+      [7, 4],
+      { color: HALO, width: 3.6 },
+      [
+        "in",
+        ["get", "도로구분"],
+        ["literal", ["소로", "미분류"]],
+      ] as unknown as FilterSpecification,
+    ),
+    ...haloLine(
+      "forestRoadFile",
+      "forestRoadFile",
+      themeColor("--draw-map-forest-road-file", "#ea580c"),
+      2.4,
+      [],
+      { color: HALO, width: 4 },
+    ),
     {
       key: "stream",
       id: "stream",
       type: "line",
       source: "stream",
-      layout: round,
+      layout: ROUND,
       paint: {
-        "line-color": stream,
+        "line-color": themeColor("--draw-map-stream", "#38bdf8"),
         "line-width": ["case", ["==", ["get", "구분"], "세류"], 1, 2.4],
       },
-    },
-  ] as Array<LayerSpecification & { key: GlLayerKey }>;
+    } as GlSpec,
+    ...lineKind("faults", 2.4, []),
+    ...lineKind("lineaments", 1.8, [8, 4]),
+    ...lineKind("zeroOrder", 1.8, [4, 3]),
+    // 산사태취약 — 필지 = 「이 필지 안 어딘가」 테두리만 · 점 = 지정 자리
+    ...haloLine(
+      "landslideZones",
+      "landslideZones",
+      landslideZone,
+      1.8,
+      [6, 3],
+      { color: "rgba(255, 255, 255, 0.7)", width: 3.2 },
+      ["!=", ["geometry-type"], "Point"] as unknown as FilterSpecification,
+    ),
+    {
+      key: "landslideZones",
+      id: "landslideZones-point",
+      type: "circle",
+      source: "landslideZones",
+      filter: ["==", ["geometry-type"], "Point"],
+      paint: {
+        "circle-radius": 5,
+        "circle-color": landslideZone,
+        "circle-stroke-color": "#ffffff",
+        "circle-stroke-width": 1.5,
+      },
+    } as GlSpec,
+    {
+      key: "place",
+      id: "place-dot",
+      type: "circle",
+      source: "place",
+      paint: { "circle-radius": 2.5, "circle-color": place },
+    } as GlSpec,
+    {
+      key: "place",
+      id: "place",
+      type: "symbol",
+      source: "place",
+      layout: {
+        "text-field": ["get", "name"],
+        "text-font": GL_FONT_BOLD,
+        "text-size": 11,
+        "text-anchor": "bottom",
+        "text-offset": [0, -0.36],
+        "text-padding": 2,
+      },
+      paint: {
+        "text-color": place,
+        "text-halo-color": "rgba(0, 0, 0, 0.7)",
+        "text-halo-width": 1.5,
+      },
+    } as GlSpec,
+  ];
 }
 
+/** 선 겹 색 값(캔버스 `LINE_LAYERS` 와 같음). */
+const LINE_COLOR = {
+  faults: "--draw-map-fault",
+  lineaments: "--draw-map-lineament",
+  zeroOrder: "--draw-map-zero-order",
+} as const;
+
 /** 겹 색 지문 — 밝음 · 어두움이 바뀌면 색을 다시. */
 const themeKey = (): string =>
   ["--draw-map-contour", "--draw-map-road", "--draw-map-stream", "--draw-map-parcel"]
     .map((name) => themeColor(name, ""))
     .join();
 
-export function createGlBase(projectId: string): GlBase {
-  const data = new Map<GlLayerKey, GeoJsonCollection | GlImage | null>();
-  const visible = new Map<GlLayerKey, boolean>();
+const SOURCES: readonly (GlSource | "satellite")[] = [
+  "satellite",
+  "hillshade",
+  "slope",
+  "landslide",
+  "soils",
+  "zones",
+  "bands",
+  "cadastral",
+  "water",
+  "building",
+  "contour",
+  "road",
+  "forestRoadFile",
+  "stream",
+  "faults",
+  "lineaments",
+  "zeroOrder",
+  "landslideZones",
+  "place",
+];
+
+export function createGlBase(projectId: string, onFail: (why: string) => void): GlBase {
+  const data = new Map<GlSource, GeoJsonCollection | GlImage | null>();
+  const visible = new Map<PlanLayerKey, boolean>();
   let step = 5;
   let theme = "";
   let map: MapLibreMap | null = null;
   /** 첫 꼴이 섬(`isStyleLoaded` 는 조각 받는 동안 거짓이라 안 씀). */
   let ready = false;
-  const applied = new Map<GlLayerKey, unknown>();
+  const applied = new Map<string, unknown>();
   let container: HTMLDivElement | null = null;
 
-  const source = (key: GlLayerKey): SourceSpecification | null => {
+  const source = (key: GlSource | "satellite"): SourceSpecification | null => {
     if (key === "satellite")
       return {
         type: "raster",
@@ -160,23 +362,25 @@ export function createGlBase(projectId: string): GlBase {
     const got = data.get(key);
     if (!got) return null;
     if ("url" in got) return { type: "image", url: got.url, coordinates: got.corners };
-    return { type: "geojson", data: got as never, tolerance: 0.375 };
+    // 묶음 꼴 표시가 없는 자료(여러 겹을 합친 것 등)도 받게 다시 싸 줌
+    const collection = { type: "FeatureCollection", features: got.features ?? [] };
+    return { type: "geojson", data: collection as never, tolerance: 0.375 };
   };
 
-  /** 자료 · 켬끔 · 색을 지도에 맞춤(지도가 다 서면) — 자료는 바뀐 겹만 다시 올림. */
+  /** 자료 · 켬끔 · 색을 지도에 맞춤(지도가 다 서면) — 자료는 바뀐 소스만 다시 올림. */
   function apply(): void {
     if (!map || !ready) return;
     const now = themeKey();
     const specs = layerSpecs(step);
-    const drop = (key?: GlLayerKey): void => {
+    const drop = (key?: string): void => {
       for (const spec of specs)
-        if ((!key || spec.key === key) && map!.getLayer(spec.id)) map!.removeLayer(spec.id);
+        if ((!key || spec.source === key) && map!.getLayer(spec.id)) map!.removeLayer(spec.id);
     };
     if (now !== theme) {
       theme = now;
       drop(); // 밝음 · 어두움 = 색 다시
     }
-    for (const key of GL_KEYS) {
+    for (const key of SOURCES) {
       const got = key === "satellite" ? key : (data.get(key) ?? null);
       if (applied.get(key) === got) continue;
       applied.set(key, got);
@@ -188,7 +392,7 @@ export function createGlBase(projectId: string): GlBase {
       if (want) map.addSource(key, want);
     }
     specs.forEach(({ key, ...spec }, index) => {
-      if (!map!.getSource(key)) return;
+      if (!map!.getSource(spec.source)) return;
       if (!map!.getLayer(spec.id)) {
         // 늦게 온 겹도 제 차례(위 겹 밑)에
         const above = specs.slice(index + 1).find((next) => map!.getLayer(next.id));
@@ -198,6 +402,15 @@ export function createGlBase(projectId: string): GlBase {
     });
   }
 
+  function teardown(): void {
+    map?.remove();
+    container?.remove();
+    map = container = null;
+    ready = false;
+    theme = "";
+    applied.clear();
+  }
+
   return {
     setData(key, next) {
       if (data.get(key) === next) return;
@@ -215,32 +428,36 @@ export function createGlBase(projectId: string): GlBase {
       if (map?.getLayer("contour-minor")) map.setFilter("contour-minor", minorFilter(step));
     },
     enable(parent) {
-      if (!parent === !map) return;
       if (!parent) {
-        map?.remove();
-        container?.remove();
-        map = container = null;
-        ready = false;
-        theme = "";
-        applied.clear();
-        return;
+        teardown();
+        return false;
       }
+      if (map) return true;
       container = document.createElement("div");
       container.className = "d03-plan__gl";
       parent.prepend(container);
-      map = new MapLibreMap({
-        container,
-        style: { version: 8, sources: {}, layers: [] },
-        interactive: false,
-        attributionControl: false,
-        fadeDuration: 0,
-        maxZoom: 24,
-        renderWorldCopies: false,
-      });
+      try {
+        map = new MapLibreMap({
+          container,
+          style: { version: 8, sources: {}, layers: [] },
+          interactive: false,
+          attributionControl: false,
+          fadeDuration: 0,
+          maxZoom: 24,
+          renderWorldCopies: false,
+        });
+      } catch (error) {
+        teardown();
+        console.warn("D03 GL 바탕 못 켬", error);
+        onFail("브라우저가 WebGL 을 열지 못함");
+        return false;
+      }
       map.on("load", () => {
         ready = true;
         apply();
       });
+      map.on("webglcontextlost", () => onFail("그래픽 카드 문맥을 잃음"));
+      return true;
     },
     map: () => map,
     camera(center, zoom, bearingDeg) {
diff --git a/resources/tester/test_581_2_plan_soils.py b/resources/tester/test_581_2_plan_soils.py
index 32e03fecf..b8d798427 100644
--- a/resources/tester/test_581_2_plan_soils.py
+++ b/resources/tester/test_581_2_plan_soils.py
@@ -92,6 +92,8 @@ def test_screen_def_and_colors() -> None:
     assert re.search(rf"^\s+{entry.group(1)}:", icons, re.M)
     theme = (ROOT / "ui_template" / "ui_template_theme.css").read_text("utf-8")
     assert all(f"--draw-map-soil-{n}:" in theme for n in range(1, 7))
-    page = (ROOT / "D03_PlanAnalysis" / "D03_PlanAnalysis_UI_Layers.ts").read_text("utf-8")
+    page = (ROOT / "D03_PlanAnalysis" / "D03_PlanAnalysis_UI_LayerPaint.ts").read_text(
+        "utf-8"
+    )  # 586-2
     assert "if (!on.soils || !data.soils) return;" in page
     assert page.count("base: true,") == page.count("draw: (context, map) =>")  # 겹 모두 바탕(582)
diff --git a/resources/tester/test_582_contour_lod.py b/resources/tester/test_582_contour_lod.py
index 132a3dfca..c4a32af9f 100644
--- a/resources/tester/test_582_contour_lod.py
+++ b/resources/tester/test_582_contour_lod.py
@@ -75,7 +75,10 @@ def test_D03_만_켬():
     layers = _read("D03_PlanAnalysis/D03_PlanAnalysis_UI_Layers.ts")
     assert "indexLayerLod(prepare(collection" in layers
     # 581-1 합침 — 겹 모두 바탕 캔버스
-    assert layers.count("base: true") == layers.count("draw: (context, map)") >= 12  # 겹 모두 바탕(581 · 584 로 늘어남)
+    paint = _read("D03_PlanAnalysis/D03_PlanAnalysis_UI_LayerPaint.ts")  # 586-2 캔버스 그리기 따로
+    assert (
+        paint.count("base: true") == paint.count("draw: (context, map)") >= 12
+    )  # 겹 모두 바탕(581 · 584 로 늘어남)
     plan_map = _read("D03_PlanAnalysis/D03_PlanAnalysis_UI_Map.ts")
     assert "requestAnimationFrame(flush)" in plan_map
     assert "drawTop();" in plan_map
diff --git a/resources/tester/test_584_1_plan_geo_lines.py b/resources/tester/test_584_1_plan_geo_lines.py
index 4f855c427..529380914 100644
--- a/resources/tester/test_584_1_plan_geo_lines.py
+++ b/resources/tester/test_584_1_plan_geo_lines.py
@@ -230,5 +230,7 @@ def test_screen_defs_icons_colors() -> None:
         assert f"--draw-map-{color}:" in theme and f'"--draw-map-{color}"' in defs
     for kind in layers.LINE_KINDS:
         assert f'kind: "{kind}"' in defs  # 서버 열쇠와 같음
-    page = (ROOT / "D03_PlanAnalysis" / "D03_PlanAnalysis_UI_Layers.ts").read_text("utf-8")
+    page = (ROOT / "D03_PlanAnalysis" / "D03_PlanAnalysis_UI_LayerPaint.ts").read_text(
+        "utf-8"
+    )  # 586-2
     assert page.count("base: true,") == page.count("draw: (context, map) =>")  # 겹 모두 바탕(582)
diff --git a/resources/tester/test_584_3_plan_forest_road_zones.py b/resources/tester/test_584_3_plan_forest_road_zones.py
index 3938dd0b6..87ad0b83e 100644
--- a/resources/tester/test_584_3_plan_forest_road_zones.py
+++ b/resources/tester/test_584_3_plan_forest_road_zones.py
@@ -242,7 +242,10 @@ def test_screen_defs() -> None:
     defs = (folder / "D03_PlanAnalysis_UI_LayerDefs.ts").read_text("utf-8")
     icons = (ROOT / "ui_template" / "ui_template_icons.ts").read_text("utf-8")
     theme = (ROOT / "ui_template" / "ui_template_theme.css").read_text("utf-8")
-    page = (folder / "D03_PlanAnalysis_UI_Layers.ts").read_text("utf-8")
+    paint = (folder / "D03_PlanAnalysis_UI_LayerPaint.ts").read_text(
+        "utf-8"
+    )  # 586-2 캔버스 그리기 따로
+    page = (folder / "D03_PlanAnalysis_UI_Layers.ts").read_text("utf-8") + paint
     legend = (folder / "D03_PlanAnalysis_UI_LayerLegend.ts").read_text("utf-8")
     for key, color in (
         ("forestRoadFile", "forest-road-file"),
@@ -254,8 +257,13 @@ def test_screen_defs() -> None:
         assert f"--draw-map-{color}:" in theme and f'"--draw-map-{color}"' in page
     assert re.search(r"^\s+upload:", icons, re.M) and "pickFiles(" in page  # 부품 상자 고르기 창
     assert "<input" not in page and 'createElement("input")' not in page
-    assert page.count("base: true,") == page.count("draw: (context, map) =>")  # 겹 모두 바탕
+    assert paint.count("base: true,") == paint.count("draw: (context, map) =>")  # 겹 모두 바탕
     assert "임도 짐작" in legend and "올린 임도망도" in legend  # 범례 구분
     assert "이 시도 자료 없음" in legend
-    for name in ("D03_PlanAnalysis_UI_Layers.ts", "D03_PlanAnalysis_UI_LayerLegend.ts"):
+    for name in (
+        "D03_PlanAnalysis_UI_Layers.ts",
+        "D03_PlanAnalysis_UI_LayerLegend.ts",
+        "D03_PlanAnalysis_UI_LayerPaint.ts",
+        "D03_PlanAnalysis_UI_MapGl.ts",
+    ):
         assert len((folder / name).read_text("utf-8").splitlines()) <= 700