diff --git a/miniprogram/src/pages/scan-login/index.jsx b/miniprogram/src/pages/scan-login/index.jsx
index 8af2850..10b9b27 100644
--- a/miniprogram/src/pages/scan-login/index.jsx
+++ b/miniprogram/src/pages/scan-login/index.jsx
@@ -15,10 +15,9 @@ export default function ScanLogin() {
   const [busy, setBusy] = useState(false);
   const [msg, setMsg] = useState('');
   const [done, setDone] = useState(false);
-  const [loginMode, setLoginMode] = useState<'wx' | 'phone'>('wx');
+  const [loginMode, setLoginMode] = useState('wx');
   const [gatePhone, setGatePhone] = useState('');
   const [gateCode, setGateCode] = useState('');
-  const [cd, setCd] = useState(0);
 
   // 冷启动/扫码进入：纯 React useEffect 读当前实例参数（wxacode 的 scene 在 router.params.scene）。
   // 不再用 useLoad/useDidShow 等 Taro 元钩子（其内部在原生计时器里调度 React hook，会触发
@@ -51,9 +50,7 @@ export default function ScanLogin() {
     try {
       const r = await sendCode(gatePhone);
       setMsg(`验证码已发送${r.debugCode ? `（演示 ${r.debugCode}）` : ''}`);
-      setCd(60);
-      // 小程序无 window，用全局 setInterval/clearInterval（源码里 window.* 会导致运行时 ReferenceError）
-      const t = setInterval(() => setCd((c) => (c <= 1 ? (clearInterval(t), 0) : c - 1)), 1000);
+      // 不启用 setInterval 倒计时：小程序原生定时器里 setState 会触发 "Invalid attempt to destruct non-iterable"，改为允许随时重发
     } catch (e) { setMsg((e && e.message) || '发送失败'); }
     finally { setBusy(false); }
   };
@@ -101,7 +98,7 @@ export default function ScanLogin() {
                 <Input className="input" placeholder="11 位手机号" value={gatePhone} onInput={(e) => setGatePhone(e.detail.value)} />
                 <View className="sl-code">
                   <Input className="input" placeholder="验证码" value={gateCode} onInput={(e) => setGateCode(e.detail.value)} />
-                  <Button className="btn btn-ghost btn-sm" disabled={cd > 0 || busy} onClick={sendSms}>{cd > 0 ? `${cd}s` : '验证码'}</Button>
+                  <Button className="btn btn-ghost btn-sm" disabled={busy} onClick={sendSms}>验证码</Button>
                 </View>
                 <Button className="btn btn-cta" loading={busy} onClick={phoneLoginNow}>登录</Button>
               </View>
diff --git a/miniprogram/src/pages/scan-login/index.scss b/miniprogram/src/pages/scan-login/index.scss
index 13418f1..5151df7 100644
--- a/miniprogram/src/pages/scan-login/index.scss
+++ b/miniprogram/src/pages/scan-login/index.scss
@@ -13,9 +13,9 @@
 .sl-actions { display: flex; flex-direction: column; gap: 16rpx; margin-top: 40rpx; }
 
 /* 登录门 */
-.sl-tabs { display: flex; gap: 4px; margin: 24rpx 0; padding: 4px; border-radius: 12px; background: #161618; border: 1px solid #d7ddf0; }
+.sl-tabs { display: flex; gap: 4px; margin: 24rpx 0; padding: 4px; border-radius: 12px; background: #eef1ff; border: 1px solid rgba(99,132,255,.14); }
 .sl-tab { flex: 1; text-align: center; padding: 12rpx 0; border-radius: 9px; color: #7a86b0; font-size: 26rpx; }
-.sl-tab.on { background: #fff; color: #111; }
+.sl-tab.on { background: #fff; color: #23315c; box-shadow: 0 4rpx 12rpx rgba(59,79,125,.10); }
 .sl-field { display: flex; flex-direction: column; gap: 14rpx; margin-top: 8rpx; }
 .sl-code { display: flex; gap: 12rpx; align-items: center; }
 .sl-code .input { flex: 1; }