diff --git a/app.py b/app.py
index 4761568..be7fd4f 100644
--- a/app.py
+++ b/app.py
@@ -318,13 +318,25 @@ async def capture_with_playwright(
                 await stealth_async(page)
             
             try:
-                await page.goto(url, wait_until="networkidle", timeout=30000)
-            except:
                 await page.goto(url, wait_until="domcontentloaded", timeout=30000)
+            except Exception as e:
+                # 如果 domcontentloaded 超时，尝试 commit
+                try:
+                    await page.goto(url, wait_until="commit", timeout=30000)
+                except:
+                    pass
             
+            # 固定等待时间（用于验证、加载等过程）
             if wait_time > 0:
                 await page.wait_for_timeout(wait_time)
             
+            # 等待页面基本稳定
+            try:
+                await page.wait_for_load_state("networkidle", timeout=5000)
+            except:
+                # networkidle 超时没关系，继续执行
+                pass
+            
             if scroll_times > 0:
                 for i in range(scroll_times):
                     await page.evaluate("window.scrollBy(0, 800)")
diff --git a/templates/index.html b/templates/index.html
index de67b77..680b78d 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -295,20 +295,21 @@
                 </div>
                 
                 <div class="form-group">
-                    <label>滚动设置（用于加载动态内容）</label>
+                    <label>等待设置（重要！）</label>
                     <div class="row">
                         <div>
-                            <label for="scrollTimes">滚动次数</label>
+                            <label for="waitTime">页面加载等待(ms) ⏱️</label>
+                            <input type="number" id="waitTime" value="2000" min="0" max="60000" step="500">
+                            <small style="color: #666; display: block; margin-top: 4px;">某些网站需要较长验证过程，可设置为 10000-30000</small>
+                        </div>
+                        <div>
+                            <label for="scrollTimes">滚动次数（可选）</label>
                             <input type="number" id="scrollTimes" value="0" min="0" max="20">
                         </div>
                         <div>
                             <label for="scrollDelay">滚动间隔(ms)</label>
                             <input type="number" id="scrollDelay" value="1000" min="500" max="5000" step="100">
                         </div>
-                        <div>
-                            <label for="waitTime">页面加载等待(ms)</label>
-                            <input type="number" id="waitTime" value="2000" min="0" max="10000" step="500">
-                        </div>
                     </div>
                 </div>
                 
@@ -350,16 +351,23 @@
         </div>
         
         <div class="card api-docs">
-            <h3>📚 API 文档</h3>
-            <p>POST /api/capture</p>
-            <pre><code>{
+            <h3>📚 使用说明</h3>
+            <p><strong>重要提示：</strong></p>
+            <ul style="margin: 10px 0; line-height: 1.8;">
+                <li>⏱️ <strong>页面加载等待</strong>：某些网站需要验证过程（如 Cloudflare），请设置较长时间（10000-30000ms）</li>
+                <li>🔄 <strong>滚动次数</strong>：用于加载动态内容（如微博、推特等），建议 3-5 次</li>
+                <li>🎯 <strong>全页截图</strong>：滚动加载后建议开启此选项</li>
+            </ul>
+            <p style="margin-top: 15px;"><strong>API 调用：</strong></p>
+            <pre><code>POST /api/capture
+{
   "url": "https://example.com",
   "action": "screenshot",  // 或 "html"
-  "scroll_times": 3,
-  "scroll_delay": 1000,
-  "full_page": true,
-  "viewport": {"width": 1920, "height": 1080},
-  "wait_time": 2000
+  "wait_time": 15000,     // 重要！验证网站需设置较长等待
+  "scroll_times": 3,      // 可选：加载动态内容
+  "scroll_delay": 1000,  // 可选：滚动间隔
+  "full_page": true,     // 可选：全页截图
+  "backend": "playwright" // 可选：playwright 或 agent-browser
 }</code></pre>
         </div>
     </div>