Add credit photo styles

style.css

@@ -1073,10 +1073,34 @@ a.credit-card, .credit-card {
   transition: border-color 0.2s;
   text-decoration: none;
   color: inherit;
-  display: block;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
   cursor: pointer;
 }
 
+.credit-photo {
+  width: 80px;
+  height: 80px;
+  border-radius: 50%;
+  object-fit: cover;
+  margin-bottom: 0.75rem;
+  border: 2px solid var(--border);
+}
+
+.credit-initials {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--border);
+  color: var(--text-secondary);
+  font-family: var(--font-mono);
+  font-size: 1.1rem;
+  font-weight: 600;
+  letter-spacing: 0.05em;
+}
+
 a.credit-card:hover, .credit-card:hover {
   border-color: var(--accent);
 }