增加阅读是pdf中高亮显示

addon/content/icons/lecture.svg

@@ -1,5 +1,5 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20" fill="none">
-  <!-- ChatPapers voice lecture: paper + headphones -->
+  <!-- ChatPapers 语音伴读：论文 + 声波 + 耳机（与对话气泡图标区分） -->
   <path
     fill="context-fill"
     fill-opacity="0.92"
@@ -10,19 +10,55 @@
     fill-opacity="0.35"
     d="M10.6 2.85v2.35c0 .45.37.82.82.82h2.35L10.6 2.85z"
   />
+  <!-- 声波（替代对话图标的横线文本） -->
+  <rect x="4.4" y="8.35" width="1.15" height="2.8" rx="0.4" fill="context-fill" fill-opacity="0.5" />
+  <rect x="6.05" y="7.25" width="1.15" height="4.2" rx="0.4" fill="context-fill" fill-opacity="0.72" />
+  <rect x="7.7" y="8.65" width="1.15" height="2.2" rx="0.4" fill="context-fill" fill-opacity="0.5" />
+  <rect x="9.35" y="7.75" width="1.15" height="3.5" rx="0.4" fill="context-fill" fill-opacity="0.62" />
+  <!-- 耳机头梁 -->
+  <path
+    stroke="context-fill"
+    stroke-opacity="0.92"
+    stroke-width="1.15"
+    stroke-linecap="round"
+    fill="none"
+    d="M12.85 9.15c0-1.55 1.15-2.8 2.55-2.8s2.55 1.25 2.55 2.8"
+  />
+  <!-- 左耳罩 -->
+  <rect
+    x="11.55"
+    y="9.05"
+    width="2.15"
+    height="3.55"
+    rx="0.85"
+    fill="context-fill"
+    fill-opacity="0.92"
+  />
+  <!-- 右耳罩 -->
+  <rect
+    x="14.55"
+    y="9.05"
+    width="2.15"
+    height="3.55"
+    rx="0.85"
+    fill="context-fill"
+    fill-opacity="0.92"
+  />
+  <!-- 向外声波弧线 -->
   <path
     stroke="context-stroke"
-    stroke-opacity="0.55"
-    stroke-width="0.9"
+    stroke-opacity="0.45"
+    stroke-width="0.85"
     stroke-linecap="round"
-    d="M4.35 7.1h5.1M4.35 9.15h4.2"
+    fill="none"
+    d="M17.15 10.1c.55.45.9 1.05.9 1.75s-.35 1.3-.9 1.75"
   />
   <path
-    fill="context-fill"
-    d="M12.1 8.35c1.45 0 2.65 1.15 2.65 2.55v2.1c0 .35-.28.62-.62.62h-.75v1.05c0 .55-.45 1-1 1h-.55c-.55 0-1-.45-1-1v-1.05h-.55c-.35 0-.62-.28-.62-.62v-2.1c0-1.4 1.2-2.55 2.65-2.55z"
-  />
-  <path
-    fill="context-fill"
-    d="M16.55 9.05c1.05 0 1.9.82 1.9 1.85v1.35c0 1-.85 1.85-1.9 1.85-.35 0-.62-.28-.62-.62v-3.8c0-.35.28-.62.62-.62z"
+    stroke="context-stroke"
+    stroke-opacity="0.3"
+    stroke-width="0.85"
+    stroke-linecap="round"
+    fill="none"
+    d="M17.85 10.1c.85.7 1.35 1.65 1.35 2.75s-.5 2.05-1.35 2.75"
   />
 </svg>