diff --git a/src/pPowerManger/httpserver/fuelcell.h b/src/pPowerManger/httpserver/fuelcell.h
index 1b12503..39553da 100644
--- a/src/pPowerManger/httpserver/fuelcell.h
+++ b/src/pPowerManger/httpserver/fuelcell.h
@@ -278,34 +278,192 @@ body {
     margin-bottom: 12px;
 }
 
-.slider-container {
+/* 数值步进控件（替代滑块，防误拖） */
+.stepper-container {
     display: flex;
     align-items: center;
+    gap: 8px;
+}
+
+.stepper-btn {
+    width: 40px;
+    height: 40px;
+    border: 1px solid #d1d5db;
+    border-radius: 4px;
+    background-color: #f9fafb;
+    color: #1a1a1a;
+    font-size: 1.25rem;
+    font-weight: 700;
+    line-height: 1;
+    cursor: pointer;
+    transition: all 0.15s;
+    user-select: none;
+}
+
+.stepper-btn:hover {
+    background-color: #e5e7eb;
+}
+
+.stepper-btn:active {
+    background-color: var(--primary-color);
+    color: white;
+    border-color: var(--primary-color);
+}
+
+.stepper-input {
+    width: 90px;
+    height: 40px;
+    padding: 0 8px;
+    border: 1px solid #d1d5db;
+    border-radius: 4px;
+    text-align: center;
+    font-family: 'SF Mono', 'Consolas', monospace;
+    font-size: 1rem;
+    font-weight: 600;
+}
+
+.stepper-input:focus {
+    outline: none;
+    border-color: var(--primary-color);
+    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
+}
+
+.stepper-unit {
+    min-width: 84px;
+    color: #4b5563;
+    font-size: 0.9rem;
+    font-family: 'SF Mono', 'Consolas', monospace;
+}
+
+/* 下拉框危险选项标记 */
+.select-control option.danger {
+    color: #dc2626;
+    font-weight: 700;
+}
+
+/* 指令确认弹窗 */
+.modal-overlay {
+    display: none;
+    position: fixed;
+    inset: 0;
+    background: rgba(17, 24, 39, 0.55);
+    z-index: 100;
+    align-items: center;
+    justify-content: center;
+    padding: 16px;
+}
+
+.modal-overlay.visible {
+    display: flex;
+}
+
+.modal {
+    background: white;
+    border-radius: 8px;
+    width: 100%;
+    max-width: 560px;
+    max-height: 85vh;
+    display: flex;
+    flex-direction: column;
+    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
+}
+
+.modal-title {
+    padding: 16px 20px;
+    font-size: 1.1rem;
+    font-weight: 600;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.modal-body {
+    padding: 16px 20px;
+    overflow-y: auto;
+}
+
+.modal-hint {
+    font-size: 0.85rem;
+    color: #6b7280;
+    margin-bottom: 12px;
+}
+
+.modal-summary {
+    border: 1px solid #e5e7eb;
+    border-radius: 6px;
+    overflow: hidden;
+}
+
+.summary-row {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 8px 12px;
+    border-bottom: 1px solid #f3f4f6;
+    font-size: 0.9rem;
+}
+
+.summary-row:last-child {
+    border-bottom: none;
+}
+
+.summary-label {
+    color: #4b5563;
+}
+
+.summary-value {
+    font-weight: 600;
+    font-family: 'SF Mono', 'Consolas', monospace;
+    text-align: right;
+}
+
+.summary-row.danger {
+    background-color: #fef2f2;
+}
+
+.summary-row.danger .summary-label,
+.summary-row.danger .summary-value {
+    color: #b91c1c;
+}
+
+.summary-danger-mark {
+    margin-right: 6px;
+    font-weight: 700;
+}
+
+.modal-note {
+    margin-top: 12px;
+    padding: 10px 12px;
+    border-radius: 4px;
+    background-color: #fef2f2;
+    color: #b91c1c;
+    font-size: 0.85rem;
+    font-weight: 600;
+    display: none;
+}
+
+.modal-note.visible {
+    display: block;
+}
+
+.modal-actions {
+    padding: 16px 20px;
+    border-top: 1px solid #e5e7eb;
+    display: flex;
     gap: 12px;
 }
 
-.slider {
-    flex-grow: 1;
-    height: 6px;
-    -webkit-appearance: none;
-    background: #d1d5db;
-    border-radius: 3px;
-    outline: none;
+.modal-actions .button {
+    flex: 1;
+    padding: 12px;
+    font-size: 1rem;
 }
 
-.slider::-webkit-slider-thumb {
-    -webkit-appearance: none;
-    width: 18px;
-    height: 18px;
-    background: var(--primary-color);
-    border-radius: 50%;
-    cursor: pointer;
+.button-confirm {
+    background-color: var(--primary-color);
+    color: white;
 }
 
-.slider-value {
-    min-width: 60px;
-    text-align: right;
-    font-family: 'SF Mono', 'Consolas', monospace;
+.button-confirm:hover {
+    background-color: var(--primary-hover);
 }
 
 .form-submit {
@@ -521,22 +679,24 @@ body {
                         <option value="00H">无效</option>
                         <option value="01H">自检</option>
                         <option value="02H">启动</option>
-                        <option value="03H">停机</option>
                         <option value="04H">复位</option>
-                        <option value="05H">紧急停机</option>
                         <option value="06H">补给</option>
                         <option value="07H">制氢预热</option>
-                        <option value="08H">停机维护</option>
                         <option value="0AH">开机</option>
-                        <option value="0BH">关机</option>
+                        <option value="03H" class="danger">⚠ 停机（危险）</option>
+                        <option value="05H" class="danger">⚠ 紧急停机（危险）</option>
+                        <option value="08H" class="danger">⚠ 停机维护（危险）</option>
+                        <option value="0BH" class="danger">⚠ 关机（危险）</option>
                     </select>
                 </div>
 
                 <div class="control-group">
                     <label class="control-label">输出功率指令 (0~250，分辨率0.1kW)</label>
-                    <div class="slider-container">
-                        <input type="range" class="slider" name="fcPower" min="0" max="250" value="0" step="1">
-                        <span class="slider-value">0 (0.0 kW)</span>
+                    <div class="stepper-container">
+                        <button type="button" class="stepper-btn" data-target="fcPower" data-step="-1">−</button>
+                        <input type="number" class="stepper-input" id="fcPower" name="fcPower" min="0" max="250" step="1" value="0">
+                        <button type="button" class="stepper-btn" data-target="fcPower" data-step="1">+</button>
+                        <span class="stepper-unit" id="fcPowerUnit">0 (0.0 kW)</span>
                     </div>
                 </div>
 
@@ -567,9 +727,11 @@ body {
 
                 <div class="control-group">
                     <label class="control-label">潜深深度 (m)</label>
-                    <div class="slider-container">
-                        <input type="range" class="slider" name="depth" min="0" max="1000" value="0" step="1">
-                        <span class="slider-value">0 m</span>
+                    <div class="stepper-container">
+                        <button type="button" class="stepper-btn" data-target="depth" data-step="-1">−</button>
+                        <input type="number" class="stepper-input" id="depth" name="depth" min="0" max="1000" step="1" value="0">
+                        <button type="button" class="stepper-btn" data-target="depth" data-step="1">+</button>
+                        <span class="stepper-unit" id="depthUnit">0 m</span>
                     </div>
                 </div>
 
@@ -612,9 +774,11 @@ body {
 
                 <div class="control-group">
                     <label class="control-label">动力锂电池功率配置值 (0~400 kW)</label>
-                    <div class="slider-container">
-                        <input type="range" class="slider" name="powerBatPower" min="0" max="400" value="0" step="10">
-                        <span class="slider-value">0 kW</span>
+                    <div class="stepper-container">
+                        <button type="button" class="stepper-btn" data-target="powerBatPower" data-step="-10">−</button>
+                        <input type="number" class="stepper-input" id="powerBatPower" name="powerBatPower" min="0" max="400" step="10" value="0">
+                        <button type="button" class="stepper-btn" data-target="powerBatPower" data-step="10">+</button>
+                        <span class="stepper-unit" id="powerBatPowerUnit">0 kW</span>
                     </div>
                 </div>
 
@@ -622,18 +786,34 @@ body {
                     <label class="control-label">主机状态</label>
                     <div class="radio-group">
                         <label class="radio-option"><input type="radio" name="hostStatus" value="AAH" checked><span>运行</span></label>
-                        <label class="radio-option"><input type="radio" name="hostStatus" value="FFH"><span>关机</span></label>
-                        <label class="radio-option"><input type="radio" name="hostStatus" value="55H"><span>故障</span></label>
+                        <label class="radio-option"><input type="radio" name="hostStatus" value="FFH"><span>⚠ 关机（危险）</span></label>
+                        <label class="radio-option"><input type="radio" name="hostStatus" value="55H"><span>⚠ 故障（危险）</span></label>
                     </div>
                 </div>
 
-                <button type="submit" class="button form-submit">提交操控指令</button>
+                <button type="submit" class="button form-submit">预览并提交操控指令</button>
                 <div id="statusMessage" class="status-message"></div>
             </form>
         </div>
     </div>
 </div>
 
+<!-- 指令确认弹窗（防误操作，提交前拦截） -->
+<div class="modal-overlay" id="confirmOverlay">
+    <div class="modal">
+        <div class="modal-title">⚠ 指令确认</div>
+        <div class="modal-body">
+            <div class="modal-hint">请逐项核对下方指令摘要，红色条目为高风险指令。点击“确认执行”后指令将立即下发。</div>
+            <div class="modal-summary" id="modalSummary"></div>
+            <div class="modal-note" id="modalDangerNote">本次包含高风险指令（停机/紧急停机/停机维护/关机等），请再次确认！</div>
+        </div>
+        <div class="modal-actions">
+            <button type="button" class="button button-secondary" id="modalCancelBtn">取消</button>
+            <button type="button" class="button button-confirm" id="modalConfirmBtn">确认执行</button>
+        </div>
+    </div>
+</div>
+
 <script>
 let ws = null;
 
@@ -793,32 +973,42 @@ function initWebSocket() {
     };
 }
 
-// 更新滑块值显示
-document.querySelectorAll('.slider').forEach(slider => {
-    const valueDisplay = slider.nextElementSibling;
-    if (slider.name === 'fcPower') {
-        valueDisplay.textContent = slider.value + ' (0.0 kW)';
-    } else if (slider.name === 'depth') {
-        valueDisplay.textContent = slider.value + ' m';
-    } else if (slider.name === 'powerBatPower') {
-        valueDisplay.textContent = slider.value + ' kW';
-    } else {
-        valueDisplay.textContent = slider.value;
-    }
+// 数值步进控件（替代滑块，防误拖）
+const stepperUnitText = {
+    fcPower: v => v + ' (' + (v * 0.1).toFixed(1) + ' kW)',
+    depth: v => v + ' m',
+    powerBatPower: v => v + ' kW'
+};
 
-    slider.addEventListener('input', () => {
-        if (slider.name === 'fcPower') {
-            valueDisplay.textContent = slider.value + ' (' + (slider.value * 0.1).toFixed(1) + ' kW)';
-        } else if (slider.name === 'depth') {
-            valueDisplay.textContent = slider.value + ' m';
-        } else if (slider.name === 'powerBatPower') {
-            valueDisplay.textContent = slider.value + ' kW';
-        } else {
-            valueDisplay.textContent = slider.value;
-        }
+function clampStepper(input) {
+    const min = parseInt(input.min, 10);
+    const max = parseInt(input.max, 10);
+    let v = parseInt(input.value, 10);
+    if (isNaN(v)) v = isNaN(min) ? 0 : min;
+    if (!isNaN(min)) v = Math.max(v, min);
+    if (!isNaN(max)) v = Math.min(v, max);
+    input.value = v;
+    const unitFn = stepperUnitText[input.id];
+    if (unitFn) {
+        const unitEl = document.getElementById(input.id + 'Unit');
+        if (unitEl) unitEl.textContent = unitFn(v);
+    }
+}
+
+document.querySelectorAll('.stepper-btn').forEach(btn => {
+    btn.addEventListener('click', () => {
+        const input = document.getElementById(btn.dataset.target);
+        if (!input) return;
+        input.value = (parseInt(input.value, 10) || 0) + parseInt(btn.dataset.step, 10);
+        clampStepper(input);
     });
 });
 
+document.querySelectorAll('.stepper-input').forEach(input => {
+    input.addEventListener('input', () => clampStepper(input));
+    input.addEventListener('blur', () => clampStepper(input));
+});
+
 // 处理按钮组选择
 document.querySelectorAll('.button-group button').forEach(button => {
     button.addEventListener('click', () => {
@@ -838,16 +1028,71 @@ document.querySelectorAll('.button-group button').forEach(button => {
     });
 });
 
-// 处理表单提交
-document.getElementById('fcsForm').addEventListener('submit', async (e) => {
+// 指令文本映射（用于确认弹窗摘要）
+const FC_MODE_TEXT = { '00H': '无效', '01H': '调试', '02H': '自动', '03H': '补给/排放' };
+const FC_CMD_TEXT = { '00H': '无效', '01H': '自检', '02H': '启动', '03H': '停机', '04H': '复位', '05H': '紧急停机', '06H': '补给', '07H': '制氢预热', '08H': '停机维护', '0AH': '开机', '0BH': '关机' };
+const EMERGENCY_TEXT = { '00H': '无', '01H': '允许降载', '02H': '允许排气', '03H': '降载+排气' };
+const SUPPLY_TEXT = { '00H': '无效', '01H': '液氧加注', '02H': '甲醇加注', '03H': '液氧排空', '04H': '甲醇排空', '05H': 'CO2排空', '07H': '合金加注', '08H': '氮气加注', '09H': '纯水加注', '0AH': '备用', '0BH': '备用' };
+const BAT_CMD_TEXT = { '00H': '无效', '10H': '启动', '20H': '关闭' };
+const HOST_STATUS_TEXT = { 'AAH': '运行', 'FFH': '关机', '55H': '故障' };
+const DANGER_FC_CMDS = ['03H', '05H', '08H', '0BH'];
+const DANGER_HOST_STATUS = ['FFH', '55H'];
+
+// 生成指令摘要并打开确认弹窗（提交前拦截，防误操作）
+function openConfirmModal() {
+    const form = document.getElementById('fcsForm');
+    const fv = name => form.elements[name].value;
+
+    const rows = [
+        { label: '模式设定', value: FC_MODE_TEXT[fv('fcMode')] || fv('fcMode') },
+        { label: '操控指令', value: FC_CMD_TEXT[fv('fcCommand')] || fv('fcCommand'), danger: DANGER_FC_CMDS.includes(fv('fcCommand')) },
+        { label: '输出功率指令', value: fv('fcPower') + ' (' + (fv('fcPower') * 0.1).toFixed(1) + ' kW)' },
+        { label: '纵倾姿态数据1', value: fv('pitch') },
+        { label: '横倾姿态数据1', value: fv('roll') },
+        { label: '应急允许', value: EMERGENCY_TEXT[fv('emergencyAllow')] || fv('emergencyAllow') },
+        { label: '潜深深度', value: fv('depth') + ' m' },
+        { label: '补给/排放指令', value: SUPPLY_TEXT[fv('supplyExhaustCmd')] || fv('supplyExhaustCmd') },
+        { label: '仪表锂电池启停指令', value: BAT_CMD_TEXT[fv('insBatCmd')] || fv('insBatCmd') },
+        { label: '动力锂电池启停指令', value: BAT_CMD_TEXT[fv('powerBatCmd')] || fv('powerBatCmd') },
+        { label: '动力锂电池功率配置值', value: fv('powerBatPower') + ' kW' },
+        { label: '主机状态', value: HOST_STATUS_TEXT[fv('hostStatus')] || fv('hostStatus'), danger: DANGER_HOST_STATUS.includes(fv('hostStatus')) }
+    ];
+
+    document.getElementById('modalSummary').innerHTML = rows.map(r =>
+        '<div class="summary-row' + (r.danger ? ' danger' : '') + '">' +
+            '<span class="summary-label">' + (r.danger ? '<span class="summary-danger-mark">⚠</span>' : '') + r.label + '</span>' +
+            '<span class="summary-value">' + r.value + '</span>' +
+        '</div>'
+    ).join('');
+
+    const hasDanger = rows.some(r => r.danger);
+    document.getElementById('modalDangerNote').className = 'modal-note' + (hasDanger ? ' visible' : '');
+
+    document.getElementById('confirmOverlay').classList.add('visible');
+}
+
+function closeConfirmModal() {
+    document.getElementById('confirmOverlay').classList.remove('visible');
+}
+
+// 提交按钮：先弹出确认框，不直接发送
+document.getElementById('fcsForm').addEventListener('submit', (e) => {
     e.preventDefault();
-    const form = e.target;
-    const formData = new FormData(form);
+    openConfirmModal();
+});
+
+// 取消：关闭弹窗，不做任何提交
+document.getElementById('modalCancelBtn').addEventListener('click', closeConfirmModal);
+
+// 确认执行：真正下发指令
+document.getElementById('modalConfirmBtn').addEventListener('click', async () => {
+    const form = document.getElementById('fcsForm');
     const statusMessage = document.getElementById('statusMessage');
+    closeConfirmModal();
 
     try {
         const params = new URLSearchParams();
-        for (const [key, value] of formData.entries()) {
+        for (const [key, value] of new FormData(form).entries()) {
             params.append(key, value);
         }
 
@@ -864,18 +1109,16 @@ document.getElementById('fcsForm').addEventListener('submit', async (e) => {
         if (result.success) {
             statusMessage.textContent = '操控指令提交成功';
             statusMessage.className = 'status-message';
-            statusMessage.style.display = 'block';
         } else {
             statusMessage.textContent = result.message || '操控指令提交失败';
             statusMessage.className = 'status-message error';
-            statusMessage.style.display = 'block';
         }
     } catch (error) {
         statusMessage.textContent = '网络错误: ' + error.message;
         statusMessage.className = 'status-message error';
-        statusMessage.style.display = 'block';
     }
 
+    statusMessage.style.display = 'block';
     setTimeout(() => {
         statusMessage.style.display = 'none';
     }, 5000);