fix: pull active media session on start, icon centering, tap highlight, media card

app/src/main/assets/h5/css/app.css

@@ -1,7 +1,14 @@
 /* Hearth 桌面样式：侧边栏 + 5 页框架 + 柔光玻璃容器 */
 /* Hearth launcher styles: sidebar + 5-page frame + soft-glass containers */
 
-* { margin: 0; padding: 0; box-sizing: border-box; }
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+  /* 移除 WebView 默认蓝色点击高亮，改用下方 :active 的 Miuix 风格反馈 */
+  /* Remove the default blue tap highlight; use the Miuix-style :active feedback below */
+  -webkit-tap-highlight-color: transparent;
+}
 
 html, body { height: 100%; }
 
@@ -72,12 +79,28 @@ body {
   cursor: pointer;
 }
 
-.rail-item .ico { width: 24px; height: 24px; }
+.rail-item .ico {
+  width: 24px;
+  height: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
 .rail-item .ico svg { width: 100%; height: 100%; display: block; }
 .rail-item .lbl { font-size: 11px; }
 
 .rail-item.active { background: var(--accent); color: #fff; }
 
+/* Miuix 风格点击反馈：轻按压时整体轻微变淡，替代默认蓝色高亮 */
+/* Miuix-style press feedback: a subtle fade on press instead of the blue highlight */
+.rail-item:active,
+.cell:active,
+.wcell:active,
+.st-item:active {
+  opacity: 0.6;
+  transition: opacity .12s ease;
+}
+
 .content { flex: 1; overflow: hidden; }
 
 .page { display: none; height: 100%; }