diff --git a/app.py b/app.py
index 3b36164..4afe407 100644
--- a/app.py
+++ b/app.py
@@ -111,7 +111,10 @@ def ui_polish(raw_text: str) -> tuple[str, str]:
 
     ok, result = polish_text(raw_text)
     if ok:
-        return result, f"✅ Gemma4 润色完成，共 {len(result)} 字。"
+        return (
+            result,
+            f"✅ Gemma4 润色完成，共 {len(result)} 字。请向下滚动到 Step 3 选择音色并合成。",
+        )
     return "", f"❌ {result}"
 
 
@@ -525,6 +528,63 @@ gradio-app,
     height: 18px !important;
     flex-shrink: 0 !important;
 }
+@media (min-width: 520px) {
+    .gradio-container .voice-radio fieldset {
+        display: grid !important;
+        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
+        gap: 8px !important;
+        max-height: none !important;
+    }
+    .gradio-container .voice-radio label { margin: 0 !important; }
+}
+@media (max-width: 519px) {
+    .gradio-container .voice-radio fieldset {
+        max-height: 200px !important;
+        overflow-y: auto !important;
+    }
+}
+
+/* 分步流水线：纵向卡片，避免三栏挤扁 */
+.pipeline-flow {
+    width: 100% !important;
+    gap: 4px !important;
+}
+.pipeline-step-card {
+    border: 1px solid #374151 !important;
+    border-radius: 12px !important;
+    padding: 16px 18px !important;
+    background: #111827 !important;
+    margin-bottom: 18px !important;
+    width: 100% !important;
+    box-sizing: border-box !important;
+}
+.pipeline-step-card h3 {
+    margin-top: 0 !important;
+    padding-bottom: 8px !important;
+    border-bottom: 1px solid #374151 !important;
+}
+.gradio-container .pipeline-step-card button {
+    width: 100% !important;
+    max-width: 100% !important;
+    white-space: normal !important;
+    line-height: 1.35 !important;
+    min-height: 44px !important;
+}
+.gradio-container .accordion,
+.gradio-container .gr-accordion {
+    border: 1px solid #374151 !important;
+    border-radius: 10px !important;
+    background: #1a2332 !important;
+}
+.gradio-container .accordion > .label-wrap,
+.gradio-container .gr-accordion .label-wrap {
+    background: #1e293b !important;
+    color: #e5e7eb !important;
+}
+.gradio-container .accordion .content,
+.gradio-container .gr-accordion .content {
+    background: #111827 !important;
+}
 
 /* Dropdown 兜底（其他下拉组件深色化） */
 .gradio-container .gradio-dropdown input,
@@ -988,11 +1048,11 @@ def build_app() -> gr.Blocks:
                     [lock_log, speaker_status],
                 )
 
-            # ---- Tab 2: 分步操作 ----
+            # ---- Tab 2: 分步操作（纵向三步，避免三栏挤在一起）----
             with gr.Tab("🔧 分步流水线"):
                 gr.HTML(MIC_HINT_HTML)
-                with gr.Row(elem_classes=["pipeline-steps"]):
-                    with gr.Column(scale=1):
+                with gr.Column(elem_classes=["pipeline-flow"]):
+                    with gr.Group(elem_classes=["pipeline-step-card"]):
                         gr.Markdown("### Step 1 · 音频极速识别")
                         rec_audio = gr.Audio(
                             label="交易复盘碎碎念录音",
@@ -1002,36 +1062,37 @@ def build_app() -> gr.Blocks:
                         transcribe_btn = gr.Button("⚡ Faster-Whisper 识别", variant="primary")
                         transcribe_log = gr.Textbox(label="识别日志", lines=2, interactive=False)
 
-                    with gr.Column(scale=1):
+                    with gr.Group(elem_classes=["pipeline-step-card"]):
                         gr.Markdown("### Step 2 · Gemma4 纪律审判")
                         raw_text = gr.Textbox(
                             label="转写原文（可编辑）",
-                            lines=10,
+                            lines=8,
                             placeholder="识别结果将显示在此，也可手动粘贴...",
                         )
                         polish_btn = gr.Button("⚖️ 远程 Gemma4 严厉润色", variant="primary")
                         polish_log = gr.Textbox(label="润色日志", lines=2, interactive=False)
 
-                    with gr.Column(scale=1):
+                    with gr.Group(elem_classes=["pipeline-step-card"]):
                         gr.Markdown("### Step 3 · 本地 GPU 配音合成")
                         gr.Markdown(
-                            "> 全部在 **本机显卡** 运行，无需微软/讯飞 API。"
-                            "可选「我的锁定音色」或预设男/女声；合成前会自动清洗 Markdown。"
-                        )
-                        tts_voice = gr.Radio(
-                            label="配音音色（本地 ChatTTS）",
-                            choices=voice_choice_labels(),
-                            value=_default_voice_label(),
-                            info="预设音色需先在服务器执行 bash scripts/generate_voice_presets.sh",
-                            elem_classes=["voice-radio"],
+                            "<span style='color:#94a3b8;font-size:0.9rem'>"
+                            "本机显卡合成，无需 API。润色完成后在此选音色并点合成。</span>"
                         )
+                        with gr.Accordion("🎚️ 选择配音音色", open=True):
+                            tts_voice = gr.Radio(
+                                label="配音音色（本地 ChatTTS）",
+                                choices=voice_choice_labels(),
+                                value=_default_voice_label(),
+                                info="预设音色：bash scripts/generate_voice_presets.sh",
+                                elem_classes=["voice-radio"],
+                            )
                         polished_text = gr.Textbox(
-                            label="润色配音稿（可编辑，支持含 Markdown，合成时自动清洗）",
-                            lines=10,
+                            label="润色配音稿（可编辑，合成时自动清洗 Markdown）",
+                            lines=12,
                             placeholder="润色结果将显示在此...",
                         )
                         synth_btn = gr.Button("🔊 合成配音 WAV", variant="primary")
-                        synth_log = gr.Textbox(label="合成日志", lines=2, interactive=False)
+                        synth_log = gr.Textbox(label="合成日志", lines=3, interactive=False)
                         output_audio = gr.Audio(label="成品配音", type="filepath")
 
                 transcribe_btn.click(ui_transcribe, rec_audio, [raw_text, transcribe_log])