diff --git a/public/admin/config.yml b/public/admin/config.yml
index 810c193..c206900 100644
--- a/public/admin/config.yml
+++ b/public/admin/config.yml
@@ -27,6 +27,23 @@ logo:
 media_folder: "public/uploads"
 public_folder: "/uploads"
 
+# Keep the git repo lean: images are stored as plain git blobs (no LFS), so
+# every upload is converted client-side to WebP q85 and capped at 2048px
+# (documented media_libraries transformations). A phone photo lands in the
+# repo as ~100-300 KB instead of 5-10 MB.
+media_libraries:
+  default:
+    config:
+      slugify_filename: true
+      transformations:
+        raster_image:
+          format: webp
+          quality: 85
+          width: 2048
+          height: 2048
+        svg:
+          optimize: true
+
 collections:
   - name: news
     label: "News"
diff --git a/public/admin/preview.css b/public/admin/preview.css
index 990e80c..6509685 100644
--- a/public/admin/preview.css
+++ b/public/admin/preview.css
@@ -1,24 +1,61 @@
-/* Entry-preview styles for the Sveltia editor (registered via the officially
-   supported CMS.registerPreviewStyle API). Mirrors the portal's article look
-   so editors see roughly what readers will see. Kept intentionally tiny. */
+/* Entry-preview styles for the Sveltia editor, registered via the documented
+   CMS.registerPreviewStyle API (bare element selectors, per the official docs
+   example). This file MIRRORS the article styles 1:1 — the design tokens from
+   :root and the `.prose` block in src/styles/global.css — with `.prose`
+   dropped from selectors (the preview pane has no such wrapper).
+   KEEP IN SYNC: when you touch `.prose` or the tokens in global.css, update
+   the corresponding value here (a matching reminder sits next to `.prose`).
+   Fonts: same families as the site (site inlines them; the preview loads them
+   from Google Fonts — editors' browsers are online by definition). */
 @import url("https://fonts.googleapis.com/css2?family=Inter:wght@400..700&family=Space+Grotesk:wght@500..700&display=swap");
 
+:root {
+  /* tokens copied from global.css :root */
+  --galaxy: #00004a;
+  --moon: #f5f5f5;
+  --text: #101228;
+  --muted: #46536a;
+  --border: #e2e5ee;
+  --link: #0057c2;
+  --font-body: "Inter", Arial, system-ui, sans-serif;
+  --font-display: "Space Grotesk", var(--font-body);
+  --fs-s: 0.9rem;
+  --fs-l: 1.125rem;
+  --fs-xl: 1.5rem;
+  --radius: 16px;
+}
+
+/* preview shell ≈ article column */
 body {
-  font-family: "Inter", Arial, system-ui, sans-serif;
-  color: #101228;
-  line-height: 1.65;
+  font-family: var(--font-body);
+  color: var(--text);
   max-width: 70ch;
   margin: 0 auto;
   padding: 24px;
 }
-h1, h2 { font-family: "Space Grotesk", "Inter", sans-serif; color: #00004a; }
-h3, h4 { color: #00004a; }
-a { color: #0057c2; }
-img { max-width: 100%; height: auto; border-radius: 16px; }
+
+/* = global.css base heading/link rules = */
+h1, h2 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.025em; line-height: 1.1; }
+h3 { font-weight: 600; }
+h1, h2, h3 { overflow-wrap: break-word; text-wrap: balance; }
+a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
+
+/* = global.css `.prose` rules, selectors unwrapped = */
+body { line-height: 1.65; overflow-wrap: break-word; }
+h1 { color: var(--galaxy); }
+h2 { color: var(--galaxy); margin: 44px 0 12px; font-size: var(--fs-xl); }
+h3 { color: var(--galaxy); margin: 30px 0 8px; font-size: var(--fs-l); }
+p { margin: 0 0 16px; text-wrap: pretty; }
+ul, ol { margin: 0 0 16px; padding-left: 22px; }
+li { margin: 6px 0; }
 blockquote {
-  margin: 22px 0; padding: 12px 20px;
-  border-left: 3px solid #00e4d8; background: #f5f5f5;
+  margin: 22px 0; padding: 12px 20px; border-left: 3px solid var(--galaxy);
+  background: var(--moon); color: var(--text);
 }
-table { width: 100%; border-collapse: collapse; }
-th, td { padding: 10px 12px; border-bottom: 1px solid #e2e5ee; text-align: left; }
-thead th { border-bottom: 2px solid #00e4d8; color: #00004a; }
+img { max-width: 100%; height: auto; border: 1px solid var(--border); border-radius: var(--radius); }
+img + em, p > em:only-child { color: var(--muted); font-size: var(--fs-s); }
+hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
+table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; margin: 0 0 16px; font-size: var(--fs-s); }
+th { text-align: left; font-weight: 600; color: var(--galaxy); }
+th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
+thead th { border-bottom: 2px solid var(--galaxy); }
diff --git a/src/styles/global.css b/src/styles/global.css
index d47b3d0..53bb578 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -559,6 +559,8 @@ span.page-step { color: var(--muted); } /* disabled end stop — non-interactive
 }
 
 /* Long unbroken strings (URLs, identifiers) wrap instead of forcing page overflow */
+/* KEEP IN SYNC: public/admin/preview.css mirrors this .prose block (and the
+   tokens it uses) so the CMS entry preview matches the article 1:1. */
 .prose { line-height: 1.65; overflow-wrap: break-word; }
 .prose a { overflow-wrap: anywhere; }
 .prose h2 { color: var(--galaxy); margin: 44px 0 12px; font-size: var(--fs-xl); }