fix(tickets): hide native radio dot in department picker

Global input[type=radio] rules in main.css out-specified the ticket
picker's hide rule, pulling the radio back into flow before the pill.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/css/routes/tickets-compose.css

@@ -249,7 +249,24 @@
 /* 部门：单选卡片（替代下拉，选项一目了然）。 */
 .aksrt-ticket-types__list { display: flex; flex-wrap: wrap; gap: 8px; }
 .aksrt-ticket-type { position: relative; margin: 0; cursor: pointer; }
-.aksrt-ticket-type input { position: absolute; opacity: 0; pointer-events: none; }
+/* 原生单选点视觉隐藏，选中态由胶囊承载。选择器需压过 main.css 全局
+ * input[type=radio] 及其 :hover / :checked（会把它拉回文档流并显出圆点）。 */
+.aksrt-ticket-types .aksrt-ticket-type input[type="radio"],
+.aksrt-ticket-types .aksrt-ticket-type input[type="radio"]:hover,
+.aksrt-ticket-types .aksrt-ticket-type input[type="radio"]:checked {
+  position: absolute;
+  inset: 0;
+  width: 1px;
+  min-width: 0;
+  height: 1px;
+  margin: 0;
+  border: 0;
+  box-shadow: none;
+  opacity: 0;
+  overflow: hidden;
+  clip-path: inset(50%);
+  pointer-events: none;
+}
 
 .aksrt-ticket-type span {
   display: inline-flex;