diff --git a/docs/figures/geo-q2-guaranteed-reception-disk.png b/docs/figures/geo-q2-guaranteed-reception-disk.png
index 9fb885f..6de6f06 100644
Binary files a/docs/figures/geo-q2-guaranteed-reception-disk.png and b/docs/figures/geo-q2-guaranteed-reception-disk.png differ
diff --git a/scripts/make_figures.py b/scripts/make_figures.py
index dba1c9b..57e7ec4 100644
--- a/scripts/make_figures.py
+++ b/scripts/make_figures.py
@@ -23,7 +23,7 @@ import math
 import os
 import sys
 from pathlib import Path
-from typing import Any, Callable, Iterable, Sequence
+from typing import Any, Callable, Sequence
 
 ROOT = Path(__file__).resolve().parents[1]
 FONT_DIR = ROOT / "docs" / "paper" / "fonts"
@@ -130,7 +130,7 @@ def new_axes(width_mm: float, height_mm: float, *, ncols: int = 1,
 
 def axes_for_panels(panel_mm: float, aspects: Sequence[float], *, scale: float = 1.0,
                     width_ratios: Sequence[float] | None = None,
-                    extra_mm: float = 30.0, **kw: Any) -> tuple[Any, Any]:
+                    **kw: Any) -> tuple[Any, Any]:
     """按"每个面板高 panel_mm、宽 = 高 × 宽高比"手工排版。
 
     等比例坐标轴（``set_aspect('equal')``）在自动布局（constrained/tight）下会被
@@ -310,7 +310,8 @@ def decompose(run: dict[str, Any]) -> dict[str, Any]:
                          y=req.get("position", {}).get("y")))
     wall = [r for r in run["actions"] if r.get("wall_ts_ms")]
     real_s = (wall[-1]["wall_ts_ms"] - wall[0]["wall_ts_ms"]) / 1000.0 if len(wall) > 1 else 0.0
-    return dict(rows=rows, virtual_s=float(run["actions"][-1]["response"].get("virtual_time_s") or 0),
+    last = run["actions"][-1]["response"]
+    return dict(rows=rows, virtual_s=float(last.get("virtual_time_s") or 0.0),
                 real_s=real_s,
                 move_s=sum(r["move_s"] for r in rows),
                 switch_s=sum(r["switch_s"] for r in rows),
@@ -386,12 +387,12 @@ def clip_wedge(region: np.ndarray, station: Sequence[float], bearing: float,
             region = candidates[0]
             continue
         region = min(candidates, key=lambda cand: _direction_error(cand, station,
-                                                                   bearing, half_deg))
+                                                                   bearing))
     return region
 
 
-def _direction_error(poly: np.ndarray, station: Sequence[float], bearing: float,
-                     half_deg: float) -> float:
+def _direction_error(poly: np.ndarray, station: Sequence[float],
+                     bearing: float) -> float:
     """多边形中心方向与示向度的偏差；用于挑正确的半平面一侧。"""
     centre = poly.mean(axis=0)
     dx, dy = centre[0] - station[0], centre[1] - station[1]
@@ -691,7 +692,6 @@ def fig_q1_meetup(font: dict[str, Any]) -> Any:
     stations = data["stations"]
     xs = [s[0] for s in stations]
     ys = [s[1] for s in stations]
-    cx, cy = (min(xs) + max(xs)) / 2, (min(ys) + max(ys)) / 2
     half = max(max(xs) - min(xs), max(ys) - min(ys)) / 2 * 1.35 + 60
     reach = 2.4 * half
     mec_c = data["mec"]["center"]
@@ -703,7 +703,7 @@ def fig_q1_meetup(font: dict[str, Any]) -> Any:
     span = float(np.abs(verts - np.array(zoom_c)).max())
     zoom = max(1.8 * span, 0.8 * mec_r + span, 12.0)
 
-    fig, axes = axes_for_panels(62.0, [1.0, 1.0], width_ratios=[1.0, 1.0])
+    fig, axes = axes_for_panels(62.0, [1.0, 1.0])
     ax, axz = axes
     polar_axes(ax, half, grid=half / 2)
     for sx, sy, bearing, hd in stations:
@@ -846,13 +846,13 @@ def fig_q2_safe_disk(font: dict[str, Any]) -> Any:
                         edgecolor=C["success"], lw=1.2))
     ax.annotate("", xy=c, xytext=(0, 0),
                 arrowprops=dict(arrowstyle="-|>", color=C["violet"], lw=1.0))
-    ax.annotate(f"a = {a:.1f} m", ((c[0] + 0) / 2, (c[1] + 0) / 2),
-                textcoords="offset points", xytext=(-6, 26), ha="right",
-                fontproperties=font["song"], fontsize=7.6, color=C["violet"],
+    ax.annotate(f"a = {a:.1f} m", (c[0] / 2, c[1] / 2), textcoords="offset points",
+                xytext=(-10, 30), ha="center", fontproperties=font["song"],
+                fontsize=7.6, color=C["violet"],
                 arrowprops=dict(arrowstyle="-", color=C["violet"], lw=0.8))
-    ax.annotate(f"安全盘半径 {safe:.1f} m", (c[0], c[1] - safe * 0.7),
-                textcoords="offset points", xytext=(14, -20), ha="left",
-                fontproperties=font["song"], fontsize=7.6, color=C["success"],
+    ax.annotate(f"安全盘半径 {safe:.1f} m", (c[0], c[1]), textcoords="offset points",
+                xytext=(30, -34), ha="left", fontproperties=font["song"],
+                fontsize=7.6, color=C["success"],
                 arrowprops=dict(arrowstyle="-", color=C["success"], lw=0.8))
     ax.text(0, OMEGA_R * 0.98, "Ω：R = 1800 m", fontproperties=font["song"],
             fontsize=7.6, color=C["primary"], ha="center", va="top")
@@ -860,7 +860,7 @@ def fig_q2_safe_disk(font: dict[str, Any]) -> Any:
     ax.set_ylabel("y / m", fontproperties=font["song"])
 
     # 右：安全性依据（两半径相加 = 1000 m）
-    axz.set_aspect("auto")
+    axz.set_aspect("equal", adjustable="box")
     axz.axis("off")
     axz.set_xlim(-1.15, 1.25)
     axz.set_ylim(-0.35, 1.05)
@@ -945,7 +945,6 @@ def fig_q3_seven_coverage(font: dict[str, Any]) -> Any:
 def fig_q4_mincover(font: dict[str, Any]) -> Any:
     plan = load_plan("q4_mincover_v2")
     pts = np.array(plan["points"], dtype=float)
-    cert = plan["certificate"]
 
     fig, axes = axes_for_panels(64.0, [1.0, 1.0], width_ratios=[1.0, 1.0])
     ax, axr = axes