diff --git a/paper/pnas/figs/fig1a.pdf b/paper/pnas/figs/fig1a.pdf
index 5a1b16e..43f78b3 100644
Binary files a/paper/pnas/figs/fig1a.pdf and b/paper/pnas/figs/fig1a.pdf differ
diff --git a/paper/pnas/main.pdf b/paper/pnas/main.pdf
index 5a69f3b..ff03958 100644
Binary files a/paper/pnas/main.pdf and b/paper/pnas/main.pdf differ
diff --git a/paper/pnas/make_figs.py b/paper/pnas/make_figs.py
index 1e945db..8d3d143 100644
--- a/paper/pnas/make_figs.py
+++ b/paper/pnas/make_figs.py
@@ -54,7 +54,7 @@ def _icon(svg_name: str):
     svg = OUT / "icons" / svg_name
     with tempfile.NamedTemporaryFile(suffix=".png") as f:
         try:
-            subprocess.run(["rsvg-convert", "-w", "2048", "-h", "2048", "-o", f.name, str(svg)],
+            subprocess.run(["rsvg-convert", "-w", "1024", "-h", "1024", "-o", f.name, str(svg)],
                            check=True, capture_output=True)
         except FileNotFoundError as e:
             raise RuntimeError("rsvg-convert (librsvg) is required to rasterise the icon SVGs "
@@ -122,8 +122,6 @@ def fig1a():
     xs = [x0, x0 + cw + sep, x0 + 2 * cw + sep]
     row_h, row_top = 0.157, 0.805
 
-    from matplotlib.offsetbox import AnnotationBbox, OffsetImage
-
     for j2, (name, arch, guarantee, edge, face, headfill, textcol, icon) in enumerate(TIERS):
         x = xs[j2]
         xc = x + cw / 2 - 0.02                              # text centred left of the icon slot
@@ -135,9 +133,16 @@ def fig1a():
                 linespacing=1.3, color=textcol)
         ax.text(xc, 0.833, guarantee, ha="center", va="bottom", fontsize=6.4,
                 style="italic", color=textcol, alpha=0.85)
+        # Reason: imshow + interpolation="none" embeds the icon unsampled in the PDF (an
+        # OffsetImage is always composited at figure dpi, i.e. ~39 px, whatever the source).
         img = _icon(icon)
-        ax.add_artist(AnnotationBbox(OffsetImage(img, zoom=28.0 / img.shape[0]),
-                                     (x + cw - gap - 0.024, 0.902), frameon=False))
+        iw = 28.0 / 1140.0                                  # 28 display px on an 11.4in/100dpi fig
+        ih = iw * 11.4 / 5.3
+        icx, icy = x + cw - gap - 0.024, 0.902
+        ax.imshow(img, extent=(icx - iw / 2, icx + iw / 2, icy - ih / 2, icy + ih / 2),
+                  interpolation="none", aspect="auto", zorder=5)
+        ax.set_xlim(0, 1)
+        ax.set_ylim(0, 1)
 
     for i2, (label, definition, cells) in enumerate(ROWS):
         tags = TAGS[i2]