diff --git a/assets/www/style.css b/assets/www/style.css
index 3244093..4aa1671 100644
--- a/assets/www/style.css
+++ b/assets/www/style.css
@@ -365,7 +365,18 @@ details.log-details[open] > summary { color: var(--fg); }
     font-size: 0.95rem;
 }
 .kv dt { color: var(--muted); }
-.kv dd { margin: 0; color: var(--fg); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
+.kv dd {
+    margin: 0;
+    color: var(--fg);
+    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+    /* Grid items default to min-width: auto (= content width), so a long
+       unbreakable value like a SHA-256 fingerprint would push past the
+       card. min-width: 0 lets the 1fr track enforce the column width, and
+       overflow-wrap: anywhere gives the colon-separated hex string valid
+       break opportunities. */
+    min-width: 0;
+    overflow-wrap: anywhere;
+}
 
 .coming {
     display: flex;