diff --git a/data/index.html b/data/index.html
index c401077..f174f00 100644
--- a/data/index.html
+++ b/data/index.html
@@ -3,696 +3,459 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
-    <title>健康监测系统 · 设备配网</title>
+    <title>健康监测系统 - 配网设置</title>
     <style>
         :root {
-            --bg: #f0f4ff;
-            --card: #ffffff;
-            --text: #1e293b;
-            --muted: #94a3b8;
-            --border: #e2e8f0;
-            --accent: #6366f1;
-            --accent-hover: #4f46e5;
-            --accent-light: #eef2ff;
-            --green: #16a34a;
-            --red: #dc2626;
-            --amber: #f59e0b;
-            --radius: 16px;
-            --radius-sm: 12px;
-            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+            --primary: #4A90D9;
+            --danger: #E74C3C;
+            --success: #27AE60;
+            --bg: #F5F7FA;
+            --card-bg: #FFFFFF;
+            --text: #2C3E50;
+            --text-light: #7F8C8D;
+            --border: #E1E8ED;
+            --radius: 12px;
         }
 
-        * { margin: 0; padding: 0; box-sizing: border-box; }
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
 
         body {
-            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
             background: var(--bg);
             color: var(--text);
             min-height: 100vh;
-            min-height: 100dvh;
+            padding: 16px;
             display: flex;
             flex-direction: column;
             align-items: center;
-            padding: 24px 16px 40px;
-            -webkit-font-smoothing: antialiased;
-            -moz-osx-font-smoothing: grayscale;
-        }
-
-        /* ---- Decorative blobs ---- */
-        body::before,
-        body::after {
-            content: '';
-            position: fixed;
-            border-radius: 50%;
-            pointer-events: none;
-            z-index: 0;
-        }
-        body::before {
-            top: -180px; right: -180px;
-            width: 380px; height: 380px;
-            background: radial-gradient(circle, rgba(99,102,241,0.07) 0%, transparent 70%);
-        }
-        body::after {
-            bottom: -120px; left: -120px;
-            width: 300px; height: 300px;
-            background: radial-gradient(circle, rgba(34,197,94,0.05) 0%, transparent 70%);
         }
 
         .container {
+            max-width: 420px;
             width: 100%;
-            max-width: 440px;
-            position: relative;
-            z-index: 1;
         }
 
-        /* ---- Header ---- */
+        /* 头部 */
         .header {
             text-align: center;
-            padding: 12px 0 20px;
+            padding: 24px 0;
         }
 
-        .logo {
-            width: 60px;
-            height: 60px;
-            margin: 0 auto 14px;
-            background: linear-gradient(135deg, #6366f1, #8b5cf6);
-            border-radius: 18px;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            box-shadow: 0 10px 28px rgba(99, 102, 241, 0.28);
-        }
-
-        .logo svg {
-            width: 30px;
-            height: 30px;
+        .header .icon {
+            font-size: 48px;
+            margin-bottom: 8px;
         }
 
         .header h1 {
             font-size: 22px;
             font-weight: 700;
-            letter-spacing: -0.3px;
             color: var(--text);
             margin-bottom: 4px;
         }
 
-        .header .sub {
-            font-size: 13px;
-            color: var(--muted);
-            line-height: 1.5;
+        .header p {
+            font-size: 14px;
+            color: var(--text-light);
         }
 
-        /* ---- Card ---- */
+        /* 卡片 */
         .card {
-            background: var(--card);
+            background: var(--card-bg);
             border-radius: var(--radius);
-            padding: 20px 22px;
-            margin-bottom: 14px;
-            box-shadow:
-                0 1px 3px rgba(0,0,0,0.03),
-                0 6px 18px rgba(0,0,0,0.05);
-            transition: box-shadow var(--transition);
-        }
-
-        .card-header {
-            display: flex;
-            align-items: center;
-            gap: 10px;
-            margin-bottom: 16px;
-            font-size: 15px;
-            font-weight: 700;
-            color: var(--text);
-        }
-
-        .card-header .icon-circle {
-            width: 32px; height: 32px;
-            border-radius: 10px;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            font-size: 16px;
-            flex-shrink: 0;
-        }
-
-        .icon-wifi  { background: #eef2ff; color: #6366f1; }
-        .icon-mqtt  { background: #ecfdf5; color: #16a34a; }
-        .icon-room  { background: #fffbeb; color: #f59e0b; }
-        .icon-device{ background: #fdf2f8; color: #db2777; }
-
-        /* ---- Form ---- */
-        .form-row {
+            padding: 20px;
             margin-bottom: 12px;
+            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
         }
-        .form-row:last-child {
+
+        .card-title {
+            font-size: 16px;
+            font-weight: 600;
+            margin-bottom: 16px;
+            display: flex;
+            align-items: center;
+            gap: 8px;
+        }
+
+        .card-title .emoji {
+            font-size: 20px;
+        }
+
+        /* 表单 */
+        .form-group {
+            margin-bottom: 14px;
+        }
+
+        .form-group:last-child {
             margin-bottom: 0;
         }
 
-        .form-row label {
+        .form-group label {
             display: block;
-            font-size: 11.5px;
+            font-size: 13px;
             font-weight: 600;
+            color: var(--text-light);
+            margin-bottom: 4px;
             text-transform: uppercase;
-            letter-spacing: 0.7px;
-            color: var(--accent);
-            margin-bottom: 5px;
+            letter-spacing: 0.5px;
         }
 
-        .form-row input {
+        .form-group input {
             width: 100%;
             height: 44px;
             padding: 0 14px;
+            border: 2px solid var(--border);
+            border-radius: 8px;
             font-size: 15px;
             color: var(--text);
-            background: #f8fafc;
-            border: 2px solid var(--border);
-            border-radius: var(--radius-sm);
+            background: var(--bg);
+            transition: border-color 0.2s, box-shadow 0.2s;
             outline: none;
-            -webkit-appearance: none;
-            transition: all var(--transition);
         }
 
-        .form-row input:focus {
-            border-color: var(--accent);
-            background: #fff;
-            box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.08);
+        .form-group input:focus {
+            border-color: var(--primary);
+            box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
+            background: var(--card-bg);
         }
 
-        .form-row input::placeholder {
-            color: #cbd5e1;
+        .form-group input::placeholder {
+            color: #BDC3C7;
         }
 
-        /* inline row */
-        .form-inline {
-            display: grid;
-            grid-template-columns: 1fr 1fr;
-            gap: 12px;
+        /* 环境备注 - 高亮 */
+        .env-note-card {
+            background: linear-gradient(135deg, #FFF9E6, #FFF3CD);
+            border: 2px solid #FFC107;
         }
 
-        /* ---- Highlight card (环境备注) ---- */
-        .card-highlight {
-            border: 2px solid #fcd34d;
-            background: linear-gradient(135deg, #fffdf5, #fffbea);
+        .env-note-card .card-title {
+            color: #856404;
         }
 
-        .card-highlight .card-header {
-            color: #92400e;
-        }
-
-        .card-highlight label {
-            color: #b45309;
-        }
-
-        .card-highlight input {
-            background: #fff;
-            border-color: #fcd34d;
+        .env-note-card input {
+            background: #FFFFFF;
+            border-color: #FFC107;
+            font-size: 16px;
             font-weight: 500;
         }
 
-        .card-highlight input:focus {
-            border-color: var(--amber);
-            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.1);
-        }
-
-        .card-highlight .hint {
-            margin-top: 6px;
+        .env-note-hint {
             font-size: 12px;
-            color: #92400e;
-            opacity: 0.8;
+            color: #856404;
+            margin-top: 6px;
+            padding-left: 2px;
         }
 
-        /* ---- Buttons ---- */
-        .btn {
+        /* 提交按钮 */
+        .btn-submit {
             width: 100%;
             height: 50px;
+            background: var(--primary);
+            color: white;
             border: none;
-            border-radius: 14px;
-            font-size: 16px;
+            border-radius: var(--radius);
+            font-size: 17px;
             font-weight: 600;
-            letter-spacing: 0.5px;
             cursor: pointer;
-            transition: all var(--transition);
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            gap: 8px;
+            transition: background 0.2s, transform 0.1s;
+            margin-top: 8px;
+            letter-spacing: 1px;
         }
 
-        .btn:active {
-            transform: scale(0.97);
+        .btn-submit:active {
+            transform: scale(0.98);
+            background: #357ABD;
         }
 
-        .btn-primary {
-            background: linear-gradient(135deg, #6366f1, #8b5cf6);
-            color: #fff;
-            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.28);
-            margin-top: 4px;
+        .btn-submit:hover {
+            background: #3D7EC0;
         }
 
-        .btn-primary:active {
-            box-shadow: 0 3px 10px rgba(99, 102, 241, 0.25);
-        }
-
-        .btn-danger {
-            background: transparent;
-            color: var(--red);
-            border: 2px solid #fecaca;
-            margin-top: 10px;
+        /* 重置按钮 */
+        .btn-reset {
+            width: 100%;
             height: 44px;
-            font-size: 14px;
+            background: transparent;
+            color: var(--danger);
+            border: 2px solid var(--danger);
+            border-radius: var(--radius);
+            font-size: 15px;
             font-weight: 500;
+            cursor: pointer;
+            margin-top: 8px;
+            transition: background 0.2s;
         }
 
-        .btn-danger:active {
-            background: #fef2f2;
+        .btn-reset:active {
+            background: #FDEDEC;
         }
 
-        /* ---- Status bar ---- */
+        /* 状态栏 */
         .status-bar {
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            gap: 8px;
-            padding: 18px 0;
-            font-size: 12.5px;
-            color: var(--muted);
+            text-align: center;
+            font-size: 12px;
+            color: var(--text-light);
+            padding: 16px 0;
         }
 
-        .status-dot {
-            width: 8px; height: 8px;
+        .status-bar .dot {
+            display: inline-block;
+            width: 8px;
+            height: 8px;
             border-radius: 50%;
-            flex-shrink: 0;
+            margin-right: 6px;
+            animation: pulse 2s infinite;
         }
 
-        .status-dot.on  { background: var(--green); animation: dotPulse 2s infinite; }
-        .status-dot.off { background: var(--red);  animation: dotPulse 2s infinite; }
-        .status-dot.wait{ background: var(--amber); animation: dotPulse 1s infinite; }
+        .dot.connected { background: var(--success); }
+        .dot.disconnected { background: var(--danger); }
 
-        @keyframes dotPulse {
-            0%, 100% { opacity: 1; transform: scale(1); }
-            50%       { opacity: 0.35; transform: scale(0.85); }
+        @keyframes pulse {
+            0%, 100% { opacity: 1; }
+            50% { opacity: 0.4; }
         }
 
-        /* ---- Toast ---- */
-        .toast-stack {
+        /* Toast 提示 */
+        .toast {
             position: fixed;
             top: 20px;
             left: 50%;
             transform: translateX(-50%);
-            z-index: 9999;
-            display: flex;
-            flex-direction: column;
-            gap: 8px;
-            pointer-events: none;
-        }
-
-        .toast {
-            pointer-events: auto;
-            padding: 12px 20px;
+            background: var(--success);
+            color: white;
+            padding: 12px 24px;
             border-radius: 24px;
             font-size: 14px;
             font-weight: 500;
-            color: #fff;
-            white-space: nowrap;
-            text-align: center;
-            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
-            animation: toastIn 0.35s ease forwards;
-            transition: opacity 0.3s, transform 0.3s;
+            z-index: 1000;
+            display: none;
+            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
         }
 
-        .toast.out {
-            opacity: 0;
-            transform: translateY(-10px);
+        .toast.show {
+            display: block;
+            animation: slideDown 0.3s ease;
         }
 
-        .toast-ok    { background: #16a34a; }
-        .toast-warn  { background: #f59e0b; color: #1e293b; }
-        .toast-error { background: #dc2626; }
-
-        @keyframes toastIn {
-            from { opacity: 0; transform: translateY(-12px) scale(0.95); }
-            to   { opacity: 1; transform: translateY(0) scale(1); }
-        }
-
-        /* ---- WiFi scan list ---- */
-        .scan-btn {
-            font-size: 12px; font-weight: 600;
-            color: var(--accent); background: var(--accent-light);
-            border: none; padding: 6px 14px; border-radius: 20px;
-            cursor: pointer; transition: all var(--transition);
-            margin-top: 4px; margin-bottom: 8px;
-        }
-        .scan-btn:active { background: #dde2ff; }
-
-        .ssid-list {
-            max-height: 180px; overflow-y: auto;
-            border: 2px solid var(--border); border-radius: var(--radius-sm);
-            margin-bottom: 10px; display: none;
-        }
-        .ssid-list.open { display: block; }
-
-        .ssid-item {
-            padding: 11px 14px; font-size: 14px; border-bottom: 1px solid #f1f5f9;
-            cursor: pointer; transition: background 0.15s;
-            display: flex; justify-content: space-between; align-items: center;
-        }
-        .ssid-item:last-child { border-bottom: none; }
-        .ssid-item:hover, .ssid-item:active { background: #f8fafc; }
-        .ssid-item .rssi { font-size: 12px; color: var(--muted); }
-
-        /* ---- Responsive ---- */
-        @media (max-width: 380px) {
-            body { padding: 12px 12px 32px; }
-            .card { padding: 16px 16px; }
-            .header h1 { font-size: 20px; }
-            .logo { width: 48px; height: 48px; border-radius: 14px; }
-            .logo svg { width: 24px; height: 24px; }
+        @keyframes slideDown {
+            from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
+            to { opacity: 1; transform: translateX(-50%) translateY(0); }
         }
     </style>
 </head>
 <body>
-
-    <!-- Toast stack -->
-    <div class="toast-stack" id="toast-stack"></div>
-
     <div class="container">
-
-        <!-- ====== Header ====== -->
+        <!-- 头部 -->
         <div class="header">
-            <div class="logo">
-                <!-- Medical cross / heart icon -->
-                <svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-                    <path d="M12 5.5C12 3.02 14.02 1 16.5 1S21 3.02 21 5.5c0 4.5-6 10.5-9 13.5-3-3-9-9-9-13.5C3 3.02 5.02 1 7.5 1S12 3.02 12 5.5z"
-                          fill="white" stroke="none"/>
-                    <circle cx="17" cy="6" r="1.8" fill="#6366f1" opacity="0.5"/>
-                </svg>
-            </div>
+            <div class="icon">🏥</div>
             <h1>健康监测系统</h1>
-            <p class="sub">
-                ESP32-S3 · 60G 毫米波雷达<br>五劳无感康养监测
-            </p>
+            <p>ESP32-S3 + 毫米波雷达 · 配网设置</p>
         </div>
 
-        <!-- ====== WiFi 设置 ====== -->
+        <!-- WiFi 设置 -->
         <div class="card">
-            <div class="card-header">
-                <div class="icon-circle icon-wifi">📶</div>
-                无线网络
+            <div class="card-title">
+                <span class="emoji">📶</span> WiFi 设置
             </div>
-
-            <div class="form-row">
+            <div class="form-group">
                 <label>WiFi 名称 (SSID)</label>
-                <input type="text" id="wifi-ssid" placeholder="选择或输入 WiFi 名称" autocomplete="off" autocorrect="off">
+                <input type="text" id="wifi-ssid" placeholder="请输入 WiFi 名称" autocomplete="off">
             </div>
-            <button class="scan-btn" id="scan-btn" type="button">
-                🔍 扫描附近 WiFi
-            </button>
-            <div class="ssid-list" id="ssid-list"></div>
-
-            <div class="form-row">
+            <div class="form-group">
                 <label>WiFi 密码</label>
                 <input type="password" id="wifi-pass" placeholder="请输入 WiFi 密码">
             </div>
         </div>
 
-        <!-- ====== MQTT 设置 ====== -->
+        <!-- MQTT 设置 -->
         <div class="card">
-            <div class="card-header">
-                <div class="icon-circle icon-mqtt">☁️</div>
-                云平台连接
+            <div class="card-title">
+                <span class="emoji">☁️</span> MQTT 云平台设置
             </div>
-
-            <div class="form-inline">
-                <div class="form-row">
-                    <label>服务器地址</label>
-                    <input type="text" id="mqtt-server" placeholder="IP 或域名">
-                </div>
-                <div class="form-row">
-                    <label>端口</label>
-                    <input type="number" id="mqtt-port" placeholder="1883">
-                </div>
+            <div class="form-group">
+                <label>MQTT 服务器地址</label>
+                <input type="text" id="mqtt-server" placeholder="例如: 192.168.1.100" value="192.168.1.100">
             </div>
-
-            <div class="form-inline">
-                <div class="form-row">
-                    <label>用户名</label>
-                    <input type="text" id="mqtt-user" placeholder="选填" autocomplete="off">
-                </div>
-                <div class="form-row">
-                    <label>密码</label>
-                    <input type="password" id="mqtt-pass" placeholder="选填">
-                </div>
+            <div class="form-group">
+                <label>MQTT 端口</label>
+                <input type="number" id="mqtt-port" placeholder="1883" value="1883">
+            </div>
+            <div class="form-group">
+                <label>MQTT 用户名 (可选)</label>
+                <input type="text" id="mqtt-user" placeholder="用户名">
+            </div>
+            <div class="form-group">
+                <label>MQTT 密码 (可选)</label>
+                <input type="password" id="mqtt-pass" placeholder="密码">
             </div>
         </div>
 
-        <!-- ====== 环境备注 ====== -->
-        <div class="card card-highlight">
-            <div class="card-header">
-                <div class="icon-circle icon-room">🏠</div>
-                安装位置
+        <!-- 环境备注 - 重点突出 -->
+        <div class="card env-note-card">
+            <div class="card-title">
+                <span class="emoji">🏠</span> 环境备注
             </div>
-            <div class="form-row">
-                <label>房间名称 / 环境备注</label>
-                <input type="text" id="env-note" placeholder="如：主卧 / 老人房 / 客厅" autocomplete="off">
+            <div class="form-group">
+                <label>设备位置 / 房间名称</label>
+                <input type="text" id="env-note" placeholder="例如: 主卧 / 客厅 / 老人房 / 婴儿房" value="主卧">
+            </div>
+            <div class="env-note-hint">
+                💡 请备注此设备安装的环境位置，方便在云平台上区分不同房间的数据
             </div>
-            <p class="hint">
-                💡 请备注设备安装的房间，便于在云平台区分不同区域的数据
-            </p>
         </div>
 
-        <!-- ====== 设备 ID ====== -->
+        <!-- 设备设置 -->
         <div class="card">
-            <div class="card-header">
-                <div class="icon-circle icon-device">📱</div>
-                设备标识
+            <div class="card-title">
+                <span class="emoji">📱</span> 设备设置
             </div>
-            <div class="form-row">
-                <label>设备编号</label>
-                <input type="text" id="device-id" placeholder="如：health_001" autocomplete="off">
+            <div class="form-group">
+                <label>设备名称 / ID</label>
+                <input type="text" id="device-id" placeholder="例如: health_001" value="health_001">
             </div>
         </div>
 
-        <!-- ====== 按钮组 ====== -->
-        <button class="btn btn-primary" id="btn-submit" type="button">
-            <span>💾</span> 保存并连接
+        <!-- 按钮 -->
+        <button class="btn-submit" onclick="submitConfig()">
+            💾 保存配置并连接
         </button>
-        <button class="btn btn-danger" id="btn-reset" type="button">
-            <span>🔄</span> 恢复出厂设置
+        <button class="btn-reset" onclick="resetConfig()">
+            🔄 恢复出厂设置
         </button>
 
-        <!-- ====== 状态 ====== -->
+        <!-- 状态 -->
         <div class="status-bar" id="status-bar">
-            <span class="status-dot off"></span>
-            <span id="status-text">等待配置…</span>
+            <span class="dot disconnected"></span> 等待配置...
         </div>
+    </div>
 
-    </div><!-- /.container -->
+    <!-- Toast -->
+    <div class="toast" id="toast"></div>
 
     <script>
-    // ── 全局缓冲 ──────────────────────────────────
-    const SELF = (() => {
-        try {
-            return JSON.parse(localStorage.getItem('health_config') || '{}');
-        } catch (_) { return {}; }
-    })();
-
-    const E = id => document.getElementById(id);
-
-    // ── Toast ─────────────────────────────────────
-    function toast(msg, type = 'ok', duration = 2800) {
-        const stack = E('toast-stack');
-        const el = document.createElement('div');
-        el.className = `toast toast-${type}`;
-        el.textContent = msg;
-        stack.appendChild(el);
-        setTimeout(() => {
-            el.classList.add('out');
-            setTimeout(() => el.remove(), 300);
-        }, duration);
-    }
-
-    // ── 状态栏 ────────────────────────────────────
-    function setStatus(state) {
-        const dot = E('status-bar').querySelector('.status-dot');
-        const txt = E('status-text');
-        dot.className = `status-dot ${state}`;
-        const map = {
-            on:   '✅ 已连接',
-            off:  '⏳ 等待配置…',
-            wait: '⏳ 连接中…',
-            ok:   '📋 配置已就绪',
-        };
-        txt.textContent = map[state] || state;
-    }
-
-    // ── 加载已保存配置 ────────────────────────────
-    function loadConfig() {
-        const f = (id, val) => { if (val) E(id).value = val; };
-        f('wifi-ssid',    SELF.wifi_ssid);
-        f('mqtt-server',  SELF.mqtt_server  || '202.110.234.102');
-        f('mqtt-port',    SELF.mqtt_port    || '8000');
-        f('mqtt-user',    SELF.mqtt_user    || 'test');
-        f('mqtt-pass',    SELF.mqtt_pass    || '');
-        f('device-id',    SELF.device_id    || '10100001001');
-        f('env-note',     SELF.env_note     || '主卧');
-    }
-
-    // ── 持久化到 localStorage ────────────────────
-    function saveLocal() {
-        const cfg = {
-            wifi_ssid:   E('wifi-ssid').value,
-            wifi_pass:   E('wifi-pass').value,
-            mqtt_server: E('mqtt-server').value,
-            mqtt_port:   E('mqtt-port').value,
-            mqtt_user:   E('mqtt-user').value,
-            mqtt_pass:   E('mqtt-pass').value,
-            device_id:   E('device-id').value,
-            env_note:    E('env-note').value,
-        };
-        localStorage.setItem('health_config', JSON.stringify(cfg));
-    }
-
-    // ── 提交 ──────────────────────────────────────
-    function submitConfig() {
-        const env = E('env-note').value.trim();
-        if (!env) {
-            toast('⚠️ 请先填写安装位置（房间名称）', 'warn');
-            E('env-note').focus();
-            return;
+        // 显示 Toast
+        function showToast(msg, duration = 3000) {
+            const t = document.getElementById('toast');
+            t.textContent = msg;
+            t.classList.add('show');
+            setTimeout(() => t.classList.remove('show'), duration);
         }
 
-        const ssid = E('wifi-ssid').value.trim();
-        if (!ssid) {
-            toast('⚠️ 请填写 WiFi 名称', 'warn');
-            E('wifi-ssid').focus();
-            return;
+        // 读取已保存的配置 (从 LocalStorage)
+        function loadConfig() {
+            try {
+                const saved = JSON.parse(localStorage.getItem('health_config') || '{}');
+                if (saved.mqtt_server) document.getElementById('mqtt-server').value = saved.mqtt_server;
+                if (saved.mqtt_port)   document.getElementById('mqtt-port').value = saved.mqtt_port;
+                if (saved.mqtt_user)   document.getElementById('mqtt-user').value = saved.mqtt_user;
+                if (saved.mqtt_pass)   document.getElementById('mqtt-pass').value = saved.mqtt_pass;
+                if (saved.device_id)   document.getElementById('device-id').value = saved.device_id;
+                if (saved.env_note)    document.getElementById('env-note').value = saved.env_note;
+                if (saved.wifi_ssid)   document.getElementById('wifi-ssid').value = saved.wifi_ssid;
+            } catch(e) { /* ignore */ }
         }
 
-        saveLocal();
-        setStatus('wait');
-        toast('📡 正在连接…', 'ok', 2000);
+        // 保存配置到 LocalStorage
+        function saveConfigLocal() {
+            const config = {
+                wifi_ssid:   document.getElementById('wifi-ssid').value,
+                wifi_pass:   document.getElementById('wifi-pass').value,
+                mqtt_server: document.getElementById('mqtt-server').value,
+                mqtt_port:   document.getElementById('mqtt-port').value,
+                mqtt_user:   document.getElementById('mqtt-user').value,
+                mqtt_pass:   document.getElementById('mqtt-pass').value,
+                device_id:   document.getElementById('device-id').value,
+                env_note:    document.getElementById('env-note').value,
+            };
+            localStorage.setItem('health_config', JSON.stringify(config));
+        }
 
-        const params = new URLSearchParams();
-        params.append('s',  ssid);
-        params.append('p',  E('wifi-pass').value);
-        params.append('ms', E('mqtt-server').value);
-        params.append('mp', E('mqtt-port').value);
-        params.append('mu', E('mqtt-user').value);
-        params.append('mw', E('mqtt-pass').value);
-        params.append('id', E('device-id').value);
-        params.append('env',env);
+        // 提交配置
+        function submitConfig() {
+            const envNote = document.getElementById('env-note').value.trim();
+            if (!envNote) {
+                showToast('⚠️ 请填写环境备注 (设备安装位置)');
+                document.getElementById('env-note').focus();
+                return;
+            }
 
-        fetch('/save', { method: 'POST', body: params })
-            .then(() => {
-                setStatus('on');
-                toast('🎉 设备已上线！WiFi 连接成功');
-            })
-            .catch(() => {
-                setStatus('ok');
-                toast('📋 配置已保存（设备端已接收）');
+            const ssid = document.getElementById('wifi-ssid').value.trim();
+            if (!ssid) {
+                showToast('⚠️ 请填写 WiFi 名称');
+                document.getElementById('wifi-ssid').focus();
+                return;
+            }
+
+            // 保存到本地
+            saveConfigLocal();
+
+            // 构建提交参数
+            const params = new URLSearchParams();
+            params.append('s', ssid);
+            params.append('p', document.getElementById('wifi-pass').value);
+            params.append('ms', document.getElementById('mqtt-server').value);
+            params.append('mp', document.getElementById('mqtt-port').value);
+            params.append('mu', document.getElementById('mqtt-user').value);
+            params.append('mw', document.getElementById('mqtt-pass').value);
+            params.append('id', document.getElementById('device-id').value);
+            params.append('env', envNote);
+
+            // 更新状态
+            document.getElementById('status-bar').innerHTML =
+                '<span class="dot connected"></span> 正在保存配置...';
+
+            showToast('✅ 配置已保存! 设备正在连接...');
+
+            // 实际设备中，这里通过 WiFiManager API 提交
+            // 开发环境中模拟提交
+            fetch('/save', {
+                method: 'POST',
+                body: params
+            }).then(() => {
+                document.getElementById('status-bar').innerHTML =
+                    '<span class="dot connected"></span> ✅ 配置成功! WiFi 已连接';
+                showToast('🎉 连接成功! 设备已上线');
+            }).catch(() => {
+                // 如果是离线 HTML (直接打开), 提示用户
+                document.getElementById('status-bar').innerHTML =
+                    '<span class="dot connected"></span> 📋 配置已准备 (请通过 ESP32 配网页面提交)';
+                showToast('📋 配置参数已保存到本地浏览器');
             });
-    }
-
-    // ── 重置 ──────────────────────────────────────
-    function resetConfig() {
-        if (!confirm('⚠️ 确定恢复出厂设置吗？\n\n所有 WiFi / MQTT / 设备配置将被清除，设备将重启。')) return;
-        localStorage.removeItem('health_config');
-
-        ['wifi-ssid','wifi-pass','mqtt-server','mqtt-port','mqtt-user','mqtt-pass','device-id','env-note'].forEach(id => {
-            E(id).value = '';
-        });
-        E('mqtt-server').value = '202.110.234.102';
-        E('mqtt-port').value   = '8000';
-        E('mqtt-user').value   = 'test';
-        E('device-id').value   = '10100001001';
-        E('env-note').value    = '主卧';
-
-        setStatus('off');
-        toast('🔄 已恢复出厂设置');
-    }
-
-    // ── WiFi 扫描 (模拟 - 实际由 ESP32 提供) ────
-    function scanWiFi() {
-        const btn = E('scan-btn');
-        const list = E('ssid-list');
-        btn.textContent = '⏳ 扫描中…';
-        btn.disabled = true;
-
-        fetch('/scan')
-            .then(r => r.json())
-            .then(nets => {
-                list.innerHTML = '';
-                nets.forEach(n => {
-                    const div = document.createElement('div');
-                    div.className = 'ssid-item';
-                    const bars = n.rssi > -50 ? '▂▄▆█' : n.rssi > -70 ? '▂▄▆' : '▂▄';
-                    div.innerHTML = `<span>${escHtml(n.ssid)}</span><span class="rssi">${bars} ${n.rssi}dBm</span>`;
-                    div.addEventListener('click', () => {
-                        E('wifi-ssid').value = n.ssid;
-                        list.classList.remove('open');
-                    });
-                    list.appendChild(div);
-                });
-                list.classList.add('open');
-                btn.textContent = '🔍 扫描附近 WiFi';
-                btn.disabled = false;
-            })
-            .catch(() => {
-                // 离线/ESP32 未连接时用 demo 数据
-                const demo = [
-                    { ssid: 'TP-LINK_Health',   rssi: -42 },
-                    { ssid: 'ChinaNet-5G',       rssi: -58 },
-                    { ssid: 'Xiaomi_Home',       rssi: -63 },
-                    { ssid: 'ASUS_Medical_Ward', rssi: -71 },
-                    { ssid: 'HUAWEI-WiFi6',      rssi: -77 },
-                ];
-                list.innerHTML = '';
-                demo.forEach(n => {
-                    const div = document.createElement('div');
-                    div.className = 'ssid-item';
-                    const bars = n.rssi > -50 ? '▂▄▆█' : n.rssi > -70 ? '▂▄▆' : '▂▄';
-                    div.innerHTML = `<span>${escHtml(n.ssid)}</span><span class="rssi">${bars} ${n.rssi}dBm</span>`;
-                    div.addEventListener('click', () => {
-                        E('wifi-ssid').value = n.ssid;
-                        list.classList.remove('open');
-                    });
-                    list.appendChild(div);
-                });
-                list.classList.add('open');
-                btn.textContent = '🔍 扫描附近 WiFi';
-                btn.disabled = false;
-                toast('⚠️ 离线模式，显示模拟列表', 'warn');
-            });
-    }
-
-    function escHtml(s) {
-        const m = { '&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;' };
-        return String(s).replace(/[&<>"']/g, c => m[c]);
-    }
-
-    // ── Init ──────────────────────────────────────
-    loadConfig();
-
-    E('btn-submit').addEventListener('click', submitConfig);
-    E('btn-reset').addEventListener('click', resetConfig);
-    E('scan-btn').addEventListener('click', scanWiFi);
-
-    // 点击输入框时关闭 SSID 列表
-    document.addEventListener('click', e => {
-        if (!e.target.closest('#ssid-list') && !e.target.closest('#scan-btn')) {
-            E('ssid-list').classList.remove('open');
         }
-    });
 
-    // ── 空闲动画 ──────────────────────────────────
-    let idleTick = 0;
-    setInterval(() => {
-        const txt = E('status-text');
-        if (txt.textContent.includes('等待配置')) {
-            const frames = ['⠋','⠙','⠹','⠸','⠼','⠴','⠦','⠧','⠇','⠏'];
-            idleTick = (idleTick + 1) % frames.length;
-            // 只在未连接时显示动画
+        // 重置
+        function resetConfig() {
+            if (confirm('确定要恢复出厂设置吗? 所有配置将被清除!')) {
+                localStorage.removeItem('health_config');
+                document.querySelectorAll('input').forEach(el => {
+                    if (el.type !== 'button') {
+                        el.value = el.defaultValue || '';
+                    }
+                });
+                document.getElementById('env-note').value = '主卧';
+                document.getElementById('mqtt-server').value = '192.168.1.100';
+                document.getElementById('mqtt-port').value = '1883';
+                document.getElementById('device-id').value = 'health_001';
+                showToast('🔄 已恢复出厂设置');
+            }
         }
-    }, 300);
+
+        // 页面加载
+        loadConfig();
+
+        // 每 5 秒检查设备状态 (模拟)
+        setInterval(() => {
+            const bar = document.getElementById('status-bar');
+            if (!bar.textContent.includes('连接成功') && !bar.textContent.includes('配置已准备')) {
+                const dots = ['⠋','⠙','⠹','⠸','⠼','⠴','⠦','⠧','⠇','⠏'];
+                const d = dots[Math.floor(Date.now()/300) % dots.length];
+                bar.innerHTML = `<span class="dot disconnected"></span> ${d} 等待配置...`;
+            }
+        }, 300);
     </script>
 </body>
 </html>
