diff --git a/inst/reveal.js-5.2.1/dist/theme/ids.css b/inst/reveal.js-5.2.1/dist/theme/ids.css
index 8d56808..1489184 100644
--- a/inst/reveal.js-5.2.1/dist/theme/ids.css
+++ b/inst/reveal.js-5.2.1/dist/theme/ids.css
@@ -969,7 +969,9 @@
   font-family: "Fira Sans Condensed", sans-serif;
   font-size: 16px;
   text-align: left;
-  margin-top: 10px;
+  /* breathing room below the title bar; padding instead of margin, because
+     the vertical-centering wrapper zeroes its first child's margin */
+  padding-top: 18px;
   max-height: 510px;
   font-weight: 400;
   color: #253b43;
@@ -983,13 +985,22 @@
 
 .references .csl-entry {
   color: #888888;
-  margin-bottom: 0.5em;
+  /* the hanging indent visually separates entries; no extra margin needed */
+  margin-bottom: 0;
 }
 
 .csl-entry .csl-authors-year {
-  display: block;
-  font-weight: bold;
-  color: #4d616b;
+  font-weight: 400;
+  color: #253b43;
+}
+
+/* in print/PDF, let long bibliographies flow onto continuation pages
+   instead of being clipped by the on-screen scroll box */
+@media print {
+  .reveal .references {
+    max-height: none !important;
+    overflow: visible !important;
+  }
 }
 
 .reveal code.sourceCode:last-child + pre {