diff --git a/src/features/agent/components/agent-command-panel.tsx b/src/features/agent/components/agent-command-panel.tsx
index 6ccd1bc..2be5d4a 100644
--- a/src/features/agent/components/agent-command-panel.tsx
+++ b/src/features/agent/components/agent-command-panel.tsx
@@ -610,7 +610,13 @@ export function AgentCommandPanel({
                     status={streaming ? "streaming" : "ready"}
                     onStop={onStopPrompt}
                   >
-                    {streaming ? undefined : <SendHorizontal size={15} aria-hidden="true" />}
+                    {streaming ? undefined : (
+                      <SendHorizontal
+                        size={15}
+                        style={{ transform: "rotate(-45deg)" }}
+                        aria-hidden="true"
+                      />
+                    )}
                   </PromptInputSubmit>
                 </div>
               </PromptInputFooter>
@@ -650,13 +656,13 @@ function VoiceInputButton({
       title={label}
       className={cn(
         "group relative grid h-8 w-8 shrink-0 place-items-center overflow-visible rounded-lg border after:absolute after:-inset-1 after:content-['']",
-        "border-transparent bg-transparent text-blue-600 shadow-none",
+        "border-transparent bg-transparent shadow-none",
         "transition-[color,background-color,border-color,box-shadow,transform] duration-200",
-        "hover:bg-slate-50 hover:text-blue-700",
         "focus-visible:outline-hidden focus-visible:ring-2 focus-visible:ring-blue-600/25 focus-visible:ring-offset-1",
         "disabled:cursor-not-allowed disabled:opacity-45",
-        isListening &&
-          "status-tone-danger bg-[var(--status-soft)] text-[var(--status-foreground)] [@media(hover:hover)]:hover:brightness-95"
+        isListening
+          ? "status-tone-danger bg-[var(--status-soft)] text-[var(--status-foreground)] [@media(hover:hover)]:hover:border-[var(--status-border)] [@media(hover:hover)]:hover:brightness-95"
+          : "text-slate-600 [@media(hover:hover)]:hover:border-[var(--action-border-hover)] [@media(hover:hover)]:hover:bg-[var(--action-soft)] [@media(hover:hover)]:hover:text-[var(--action-blue-hover)]"
       )}
       disabled={disabled}
       onClick={onClick}
@@ -668,10 +674,19 @@ function VoiceInputButton({
           aria-hidden="true"
           initial={{ opacity: 0, scale: 0.9 }}
           animate={
-            reduceMotion ? { opacity: 0.38, scale: 1 } : { opacity: [0.4, 0], scale: [1, 1.28] }
+            reduceMotion
+              ? { opacity: 0.38, scale: 1 }
+              : { opacity: [0, 0.4, 0], scale: [0.9, 1, 1.28] }
           }
           transition={
-            reduceMotion ? { duration: 0.16 } : { duration: 1.7, ease: "easeOut", repeat: Infinity }
+            reduceMotion
+              ? { duration: 0.16 }
+              : {
+                  duration: 1.7,
+                  ease: "easeOut",
+                  repeat: Infinity,
+                  times: [0, 0.12, 1]
+                }
           }
         />
       ) : null}
diff --git a/src/styles.css b/src/styles.css
index e1aebdb..bca6f6b 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -928,7 +928,7 @@ button.agent-history-session-trigger:not(:disabled):active {
 }
 
 .agent-panel-primary-icon {
-  border: 1px solid var(--action-blue);
+  border: 0;
   background: var(--action-blue);
   color: #ffffff;
   box-shadow: var(--action-shadow-primary);
diff --git a/tests/browser/agent-voice-hydration.e2e.ts b/tests/browser/agent-voice-hydration.e2e.ts
index 5f07889..4592334 100644
--- a/tests/browser/agent-voice-hydration.e2e.ts
+++ b/tests/browser/agent-voice-hydration.e2e.ts
@@ -83,3 +83,48 @@ test("speech recognition writes final transcript into the prompt", async ({ page
 
   await expect(page.getByPlaceholder("输入调度问题，Agent 将通过后端会话流式响应")).toHaveValue("检查城南泵站水位");
 });
+
+test("speech recognition pulse stays transparent across its loop boundary", async ({ page }) => {
+  await page.addInitScript(() => {
+    Object.defineProperty(window, "SpeechRecognition", {
+      configurable: true,
+      value: class SpeechRecognition {
+        start() {}
+
+        stop() {}
+
+        abort() {}
+      }
+    });
+  });
+  await page.goto("/", { waitUntil: "domcontentloaded" });
+
+  await page.getByRole("button", { name: "语音输入" }).click();
+
+  const pulse = page.locator('[data-slot="voice-input-pulse"]');
+  await expect(pulse).toBeVisible();
+  const seamOpacity = await pulse.evaluate((element) => {
+    const animation = element
+      .getAnimations()
+      .find((candidate) =>
+        (candidate.effect as KeyframeEffect | null)
+          ?.getKeyframes()
+          .some((keyframe) => keyframe.opacity !== undefined)
+      );
+    if (!animation?.effect) {
+      throw new Error("Voice input pulse opacity animation was not found");
+    }
+
+    animation.pause();
+    const duration = Number(animation.effect.getTiming().duration);
+    animation.currentTime = duration - 1;
+    const before = Number(window.getComputedStyle(element).opacity);
+    animation.currentTime = duration + 1;
+    const after = Number(window.getComputedStyle(element).opacity);
+
+    return { before, after };
+  });
+
+  expect(seamOpacity.before).toBeLessThan(0.02);
+  expect(seamOpacity.after).toBeLessThan(0.02);
+});