style: 优化选角面板间距与角色卡片布局

src/styles.css

@@ -91,28 +91,6 @@
         font-family: ui-monospace, monospace;
         font-size: 13px;
     }
-    .casting-list {
-        display: grid;
-        grid-template-columns: repeat(3, minmax(0, 1fr));
-        gap: 8px;
-    }
-    .casting-item {
-        display: flex;
-        min-width: 0;
-        align-items: center;
-        justify-content: space-between;
-        gap: 12px;
-        padding: 11px 12px;
-        border: 1px solid var(--color-line);
-        border-radius: 5px;
-        background: var(--app-surface);
-        text-align: left;
-    }
-    .casting-item:hover,
-    .casting-item.selected {
-        border-color: var(--app-border);
-        background: var(--app-subtle);
-    }
     @media (max-width: 900px) {
         .identity-workspace {
             grid-template-columns: minmax(0, 1fr);
@@ -123,9 +101,6 @@
         .casting-stats {
             grid-template-columns: repeat(2, minmax(0, 1fr));
         }
-        .casting-list {
-            grid-template-columns: 1fr;
-        }
     }
 
     .page-container {