diff --git a/app/api/ai/route.ts b/app/api/ai/route.ts
index 01c5bb5..527e184 100644
--- a/app/api/ai/route.ts
+++ b/app/api/ai/route.ts
@@ -10,6 +10,11 @@ import type { AiRequestBody } from "@/lib/ai/types";
 
 export const runtime = "nodejs";
 
+const STREAM_HEADERS = {
+  "Cache-Control": "no-cache, no-transform",
+  "X-Accel-Buffering": "no",
+};
+
 export async function POST(req: Request) {
   try {
     const body = (await req.json()) as AiRequestBody;
@@ -33,12 +38,19 @@ export async function POST(req: Request) {
       maxRetries: 0,
     });
 
-    return result.toTextStreamResponse();
+    const response = result.toTextStreamResponse();
+    for (const [key, value] of Object.entries(STREAM_HEADERS)) {
+      response.headers.set(key, value);
+    }
+    return response;
   } catch (err) {
     const message = err instanceof Error ? err.message : String(err);
     return new Response(message, {
       status: 500,
-      headers: { "Content-Type": "text/plain; charset=utf-8" },
+      headers: {
+        "Content-Type": "text/plain; charset=utf-8",
+        ...STREAM_HEADERS,
+      },
     });
   }
 }
diff --git a/components/modes/bazi-form.tsx b/components/modes/bazi-form.tsx
index f0f8d8e..cf0b4c3 100644
--- a/components/modes/bazi-form.tsx
+++ b/components/modes/bazi-form.tsx
@@ -163,7 +163,7 @@ export default function BaziForm() {
       )}
 
       {showAi && (
-        <div className="mx-auto h-96 w-full max-w-lg flex-1">
+        <div className="mx-auto w-full max-w-lg pt-2">
           <ResultAI
             completion={completion}
             isLoading={isLoading}
diff --git a/components/modes/combined-form.tsx b/components/modes/combined-form.tsx
index df83575..11930f2 100644
--- a/components/modes/combined-form.tsx
+++ b/components/modes/combined-form.tsx
@@ -299,7 +299,7 @@ export default function CombinedForm() {
       )}
 
       {showAi && (
-        <div className="mx-auto h-96 w-full max-w-lg flex-1">
+        <div className="mx-auto w-full max-w-lg pt-2">
           <ResultAI
             completion={completion}
             isLoading={isLoading}
diff --git a/components/modes/liuyao-form.tsx b/components/modes/liuyao-form.tsx
index 37297f2..35ddbb5 100644
--- a/components/modes/liuyao-form.tsx
+++ b/components/modes/liuyao-form.tsx
@@ -229,7 +229,7 @@ export default function LiuyaoForm() {
       </div>
 
       {showAi && (
-        <div className="mx-auto h-96 w-full max-w-lg flex-1">
+        <div className="mx-auto w-full max-w-lg pt-2">
           <ResultAI
             completion={completion}
             isLoading={isLoading}
diff --git a/components/result-ai.tsx b/components/result-ai.tsx
index a8c22df..da6b0b3 100644
--- a/components/result-ai.tsx
+++ b/components/result-ai.tsx
@@ -25,60 +25,48 @@ function ResultAI({
     if (!autoScroll) {
       return;
     }
-    scrollTo();
-  });
-
-  function scrollTo() {
-    requestAnimationFrame(() => {
-      if (
-        !scrollRef.current ||
-        scrollRef.current.scrollHeight ===
-          scrollRef.current.clientHeight + scrollRef.current.scrollTop
-      ) {
-        return;
-      }
-      scrollRef.current.scrollTo(0, scrollRef.current.scrollHeight);
-    });
-  }
+    scrollRef.current?.scrollTo(0, scrollRef.current.scrollHeight);
+  }, [completion, autoScroll]);
 
   function onScroll(e: HTMLElement) {
     if (!isLoading) {
       return;
     }
     const hitBottom = e.scrollTop + e.clientHeight >= e.scrollHeight - 15;
-    if (hitBottom === autoScroll) {
-      return;
+    if (hitBottom !== autoScroll) {
+      setAutoScroll(hitBottom);
     }
-    setAutoScroll(hitBottom);
   }
 
   return (
-    <div className="h-0 w-full flex-1 sm:max-w-md md:max-w-2xl">
+    <div className="flex w-full flex-col gap-2">
       {isLoading && (
-        <div className="flex h-0">
-          <span className="flex-1" />
-          <div className="relative -top-4 flex w-fit items-center pr-1 text-muted-foreground sm:left-2 sm:pr-3">
-            <RotateCw size={16} className="animate-spin" />
-            <span className="ml-1 text-sm">AI 分析中...</span>
-          </div>
+        <div className="flex items-center text-sm text-muted-foreground">
+          <RotateCw size={16} className="animate-spin" />
+          <span className="ml-1">AI 分析中...</span>
         </div>
       )}
       <div
         ref={scrollRef}
         onScroll={(e) => onScroll(e.currentTarget)}
-        className="max-h-full overflow-auto rounded-md border p-3 shadow dark:border-0 dark:bg-secondary/90 dark:shadow-none sm:p-5"
+        className="min-h-[240px] max-h-[420px] overflow-y-auto rounded-md border bg-background p-3 shadow sm:p-5 dark:border-0 dark:bg-secondary/90 dark:shadow-none"
       >
         {error ? (
-          <div className="text-destructive">
-            ಠ_ಠ 请求出错了！
-            <br />
-            {error}
+          <div className="text-sm text-destructive">
+            <p className="font-medium">请求出错了</p>
+            <p className="mt-1 whitespace-pre-wrap">{error}</p>
           </div>
+        ) : completion ? (
+          <Markdown className="prose max-w-none dark:prose-invert">
+            {completion}
+          </Markdown>
+        ) : isLoading ? (
+          <p className="text-sm text-muted-foreground">正在等待 AI 响应...</p>
         ) : (
-          <Markdown className="prose dark:prose-invert">{completion}</Markdown>
+          <p className="text-sm text-muted-foreground">暂无解读内容</p>
         )}
         {!isLoading && (
-          <Button onClick={onCompletion} size="sm" className="mt-2">
+          <Button onClick={onCompletion} size="sm" className="mt-3">
             <RotateCw size={18} className="mr-1" />
             重新生成
           </Button>
diff --git a/docs/NGINX.md b/docs/NGINX.md
new file mode 100644
index 0000000..3f0de1d
--- /dev/null
+++ b/docs/NGINX.md
@@ -0,0 +1,60 @@
+# Nginx 反代 + AI 流式输出
+
+浏览器访问 `https://你的域名/api/ai` 必须能到达 Next.js（3130），且**关闭缓冲**，否则页面上 AI 解读会一直空白或等到超时。
+
+## 1. 验证
+
+在**服务器**上分别测试：
+
+```bash
+# 本地直连（应成功）
+curl -s http://127.0.0.1:3130/api/health
+
+# 经域名（也必须成功，否则是 Nginx 问题）
+curl -s https://gate.hyf2.cc/api/health
+```
+
+若本地成功、域名 404 或返回 HTML，说明 Nginx 未正确反代 `/api/`。
+
+## 2. 推荐配置
+
+```nginx
+server {
+    listen 443 ssl http2;
+    server_name gate.hyf2.cc;
+
+    # ssl_certificate ...;
+
+    location / {
+        proxy_pass http://127.0.0.1:3130;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+
+        # AI 流式：必须关闭缓冲
+        proxy_buffering off;
+        proxy_cache off;
+        proxy_read_timeout 300s;
+        proxy_send_timeout 300s;
+        chunked_transfer_encoding on;
+    }
+}
+```
+
+修改后：
+
+```bash
+nginx -t && systemctl reload nginx
+```
+
+## 3. 浏览器测试
+
+```bash
+curl -N -X POST https://gate.hyf2.cc/api/ai \
+  -H "Content-Type: application/json" \
+  -d '{"mode":"bazi","payload":{"input":{"date":"1990-01-01","time":"12:00","gender":"male","longitude":120},"question":"测试","birthPlaceName":"上海市"}}'
+```
+
+应看到中文流式输出，而不是 HTML 404 页面。
diff --git a/lib/ai/client-stream.ts b/lib/ai/client-stream.ts
index 0d024b0..5b50710 100644
--- a/lib/ai/client-stream.ts
+++ b/lib/ai/client-stream.ts
@@ -1,18 +1,30 @@
 import type { AiRequestBody } from "@/lib/ai/types";
 
+function parseApiError(text: string, status: number): string {
+  const trimmed = text.trim();
+  if (
+    trimmed.startsWith("<!DOCTYPE") ||
+    trimmed.startsWith("<html") ||
+    trimmed.includes("<title>404")
+  ) {
+    return `AI 接口未到达后端 (${status})。请确认 Nginx 反代到 3130 且包含 /api/ 路径。`;
+  }
+  return trimmed.slice(0, 800) || `AI 请求失败 (${status})`;
+}
+
 export async function streamAiCompletion(
   body: AiRequestBody,
   onUpdate: (text: string) => void,
 ): Promise<void> {
   const res = await fetch("/api/ai", {
     method: "POST",
+    cache: "no-store",
     headers: { "Content-Type": "application/json" },
     body: JSON.stringify(body),
   });
 
   if (!res.ok) {
-    const message = (await res.text()).trim();
-    throw new Error(message || `AI 请求失败 (${res.status})`);
+    throw new Error(parseApiError(await res.text(), res.status));
   }
 
   if (!res.body) {
@@ -31,4 +43,11 @@ export async function streamAiCompletion(
     text += decoder.decode(value, { stream: true });
     onUpdate(text);
   }
+
+  text += decoder.decode();
+  onUpdate(text);
+
+  if (!text.trim()) {
+    throw new Error("AI 返回内容为空，请检查模型配置或稍后重试");
+  }
 }