diff --git a/presentation/deck/deck.css b/presentation/deck/deck.css
index 9aefccc4..01deca93 100644
--- a/presentation/deck/deck.css
+++ b/presentation/deck/deck.css
@@ -108,7 +108,7 @@
border-radius: 9999px; background: #fff; border: 1.5px solid var(--bordeaux); }
.arit .brain-ai svg { width: 24px; height: 24px; color: var(--bordeaux); }
.arit.problem .stage span.brain-ai { display: inline-flex; margin: 3px auto 0; }
-.arit.problem .midrow { display: flex; gap: 28px; margin-top: 8px; align-items: flex-start; }
+.arit.problem .midrow { display: flex; gap: 0; margin-top: 8px; align-items: flex-start; }
.arit.problem .concepts { flex: 1; min-width: 0; }
.arit .concepts .lbl, .arit .rail .lbl { display: block; font: 700 10px/1 var(--mono); letter-spacing: .14em;
text-transform: uppercase; color: var(--bordeaux); margin: 0 0 5px; }
@@ -122,7 +122,7 @@
.arit .conn-elbow { position: absolute; height: 2px; background: var(--bordeaux); }
.arit .t-head { position: absolute; width: 0; height: 0; border: 5px solid transparent;
border-bottom: 7px solid var(--bordeaux); transform: translateX(-50%); }
-.arit .rail { width: 520px; border-left: 2px solid var(--bordeaux); padding-top: 12px; }
+.arit .rail { width: 540px; border-left: 2px solid var(--bordeaux); padding-top: 12px; }
.arit .rail .row { display: flex; align-items: center; gap: 12px; padding: 5px 14px 5px 16px; position: relative; }
.arit .rail .row::before { content: ''; position: absolute; left: -2px; top: 50%; width: 14px; height: 2px; background: var(--bordeaux); }
.arit .rail .row .oicon { flex: 0 0 26px; width: 26px; height: 26px; color: var(--bordeaux); display: block; }
diff --git a/presentation/deck/index.html b/presentation/deck/index.html
index 1e1ad57e..ddc49200 100644
--- a/presentation/deck/index.html
+++ b/presentation/deck/index.html
@@ -5,7 +5,7 @@
AritmoLab — Role of AI in the Analysis of Unstructured Clinical Databases
-
+