fix sidebar: logo edge-to-edge, bg #04081a matches logo, remove border-radius duplicate

app.py

@@ -361,22 +361,23 @@ TOTEM_CSS = """
   flex: 0 0 256px;
   min-height: 100%;
   border-right: 1px solid rgba(246, 241, 232, 0.10);
-  background: linear-gradient(180deg, #07122D 0%, #081633 50%, #07122D 100%);
-  padding: 28px 0 24px 0;
+  background: #04081a;
+  padding: 0 0 24px 0;
   display: flex;
   flex-direction: column;
 }
 
 .totem-shell .totem-brand {
-  padding: 0 24px 0 24px;
-  margin-bottom: 28px;
+  padding: 0;
+  margin-bottom: 20px;
 }
 
 .totem-shell .totem-brand-img {
   width: 100%;
-  max-width: 190px;
+  max-width: 256px;
   height: auto;
   display: block;
+  border-radius: 0;
 }
 
 .totem-main {
@@ -767,16 +768,15 @@ TOTEM_CSS = """
 }
 
 .totem-shell .totem-brand {
-  margin-bottom: var(--space-6);
-  line-height: 1.1;
+  margin-bottom: 20px;
 }
 
 .totem-shell .totem-brand-img {
   width: 100%;
-  max-width: 220px;
+  max-width: 256px;
   height: auto;
   display: block;
-  border-radius: 10px;
+  border-radius: 0;
 }
 
 .totem-hero-bg {