diff --git a/app/server.py b/app/server.py
index 9ccdd68..d08233b 100644
--- a/app/server.py
+++ b/app/server.py
@@ -149,7 +149,6 @@ class Handler(BaseHTTPRequestHandler):
             "/rules/create": self.create_rule,
             "/rules/update": self.update_rule,
             "/rules/delete": self.delete_rule,
-            "/rules/preview": self.preview_rule,
             "/test/send": self.send_test,
             "/account/password": self.change_password,
             "/deliveries/retry": self.retry_deliveries,
@@ -421,8 +420,6 @@ class Handler(BaseHTTPRequestHandler):
         title: str,
         action: str,
         rule: dict[str, Any] | None = None,
-        preview_html: str = "",
-        sample_payload: str | None = None,
     ) -> None:
         targets = self.list_targets()
         rule = rule or {
@@ -440,11 +437,6 @@ class Handler(BaseHTTPRequestHandler):
         selected_targets = target_checkbox_options(targets, rule.get("target_ids", []))
         hidden_id = f'<input type="hidden" name="id" value="{rule["id"]}">' if rule.get("id") else ""
         button_text = "保存修改" if rule.get("id") else "创建规则"
-        sample_payload = sample_payload or json.dumps(
-            {"timeframe": "5m", "symbol": "BTCUSDT", "strategy": "breakout", "action": "buy", "price": 68000},
-            ensure_ascii=False,
-            indent=2,
-        )
         body = f"""<header><h1>{html.escape(title)}</h1><p>消息统一使用飞书卡片。周期、品种、策略至少填写一个，空字段表示不限。</p></header>
 <form class="panel rule-form" method="post" action="{action}">
 {hidden_id}
@@ -458,12 +450,9 @@ class Handler(BaseHTTPRequestHandler):
 <label>卡片标题模板<input name="card_title_template" value="{html.escape(str(rule['card_title_template']))}" required></label>
 <label>卡片正文模板<textarea name="card_body_template" rows="6">{html.escape(str(rule['card_body_template']))}</textarea></label>
 <div class="field-target"><span class="field-label">发送到</span><div class="target-choices">{selected_targets}</div></div>
-<label class="check"><input name="enabled" type="checkbox" {'checked' if rule.get('enabled') else ''}> 启用</label>
-<h2>规则命中与卡片预览</h2>
-<input type="hidden" name="source_action" value="{html.escape(action)}">
-<label>样例 Alert JSON<textarea name="sample_payload" rows="9">{html.escape(sample_payload)}</textarea></label>
-<div class="actions"><button type="submit">{button_text}</button><button type="submit" formaction="/rules/preview">预览命中和卡片</button><a class="button-link secondary" href="/rules">返回列表</a></div>
-</form>{preview_html}"""
+<label class="switch"><input name="enabled" type="checkbox" {'checked' if rule.get('enabled') else ''}><span></span><strong>启用规则</strong></label>
+<div class="actions"><button type="submit">{button_text}</button><a class="button-link secondary" href="/rules">返回列表</a></div>
+</form>"""
         self.send_html(title, body)
 
     def render_rule_new(self) -> None:
@@ -500,72 +489,6 @@ class Handler(BaseHTTPRequestHandler):
 </section>"""
         self.send_html("删除路由规则", body)
 
-    def build_rule_from_form(self, form: dict[str, list[str]]) -> dict[str, Any]:
-        return {
-            "id": form.get("id", [""])[-1],
-            "name": form.get("name", [""])[-1].strip(),
-            "timeframe": form.get("timeframe", [""])[-1].strip(),
-            "symbol": form.get("symbol", [""])[-1].strip().upper(),
-            "strategy": form.get("strategy", [""])[-1].strip(),
-            "priority": int(form.get("priority", ["100"])[-1] or 100),
-            "card_title_template": form.get("card_title_template", ["TradingView {{symbol}} {{action}}"])[-1].strip(),
-            "card_body_template": form.get("card_body_template", [""])[-1].strip(),
-            "target_ids": [int(value) for value in form.get("target_ids", []) if value],
-            "enabled": 1 if form.get("enabled", [""])[-1] == "on" else 0,
-        }
-
-    def preview_rule(self) -> None:
-        form = parse_form_multi(self)
-        rule = self.build_rule_from_form(form)
-        sample_payload = form.get("sample_payload", ["{}"])[-1]
-        source_action = form.get("source_action", ["/rules/create"])[-1]
-        title = "编辑路由规则" if rule.get("id") else "新增路由规则"
-        try:
-            alert = normalize_alert(json.loads(sample_payload))
-            message = build_feishu_message(alert, rule)
-            matched = self.context.dispatcher.find_matching_rule(alert)
-            current_matches = self.rule_matches_alert(rule, alert)
-            preview_html = self.render_preview_result(rule, message, matched, current_matches)
-        except (json.JSONDecodeError, ValidationError, ValueError) as exc:
-            preview_html = f"""<section class="result-panel error"><h2>预览失败</h2><p>{html.escape(str(exc))}</p></section>"""
-        self.render_rule_form(title, source_action, rule, preview_html, sample_payload)
-
-    def rule_matches_alert(self, rule: dict[str, Any], alert: dict[str, Any]) -> bool:
-        if not any((rule.get("timeframe"), rule.get("symbol"), rule.get("strategy"))):
-            return False
-        if rule.get("timeframe") and rule["timeframe"] != alert.get("timeframe"):
-            return False
-        if rule.get("symbol") and rule["symbol"].upper() != alert.get("symbol"):
-            return False
-        if rule.get("strategy") and rule["strategy"] != alert.get("strategy"):
-            return False
-        return True
-
-    def render_preview_result(
-        self,
-        rule: dict[str, Any],
-        message: dict[str, Any],
-        matched: dict[str, Any] | None,
-        current_matches: bool,
-    ) -> str:
-        title = message["card"]["header"]["title"]["content"]
-        content = message["card"]["elements"][0]["text"]["content"]
-        matched_text = f"当前已保存规则 #{matched['id']} {matched['name']}" if matched else "没有已保存规则会命中"
-        current_text = "当前表单会匹配样例 Alert" if current_matches else "当前表单不会匹配样例 Alert"
-        return f"""<section class="result-panel success">
-<h2>预览结果</h2>
-<div class="result-grid">
-<div><span>当前表单</span><strong>{html.escape(current_text)}</strong></div>
-<div><span>系统实际命中</span><strong>{html.escape(matched_text)}</strong></div>
-<div><span>规则优先级</span><strong>{rule.get('priority')}</strong></div>
-<div><span>消息类型</span><strong>飞书卡片</strong></div>
-</div>
-<div class="feishu-preview">
-<div class="feishu-preview-header">{html.escape(title)}</div>
-<pre>{html.escape(content)}</pre>
-</div>
-</section>"""
-
     def render_logs(self) -> None:
         logs = self.list_logs()
         alert_rows = ""
diff --git a/app/static/styles.css b/app/static/styles.css
index 93c7599..a2c7886 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -238,6 +238,55 @@ td textarea {
   width: auto;
 }
 
+.switch {
+  display: inline-flex;
+  align-items: center;
+  gap: 10px;
+  margin: 4px 0 18px;
+  cursor: pointer;
+}
+
+.switch input {
+  position: absolute;
+  opacity: 0;
+  pointer-events: none;
+}
+
+.switch span {
+  position: relative;
+  width: 52px;
+  height: 30px;
+  border-radius: 999px;
+  background: #c8c2b5;
+  transition: background 0.18s ease;
+}
+
+.switch span::after {
+  content: "";
+  position: absolute;
+  top: 4px;
+  left: 4px;
+  width: 22px;
+  height: 22px;
+  border-radius: 50%;
+  background: #fff;
+  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.22);
+  transition: transform 0.18s ease;
+}
+
+.switch input:checked + span {
+  background: var(--accent);
+}
+
+.switch input:checked + span::after {
+  transform: translateX(22px);
+}
+
+.switch strong {
+  color: var(--ink);
+  font: 800 14px ui-sans-serif, system-ui, sans-serif;
+}
+
 .checks {
   margin: 8px 0 12px;
 }