diff --git a/src/views/VirtualLab.vue b/src/views/VirtualLab.vue
index 539df35..d6351cc 100644
--- a/src/views/VirtualLab.vue
+++ b/src/views/VirtualLab.vue
@@ -1073,7 +1073,8 @@ function editTextBox(inst: Instance) {
           :class="{ selected: selectedId === inst.id }"
           :style="{ left: inst.x + 'px', top: inst.y + 'px', transform: 'translate(-50%, -50%) rotate(' + (inst.rotation || 0) + 'deg)' }"
           @pointerdown="(e) => onInstanceMouseDown(e, inst)"
-          @click.stop="() => selectInstance(inst.id)" :title="(elements.find(e => e.key === inst.key)?.name || inst.key)">
+          @click.stop="() => selectInstance(inst.id)"
+          :title="(elements.find(e => e.key === inst.key)?.name || inst.key)">
           <div class="inst-box"
             :style="{ width: inst.size > 0 ? inst.size + 'px' : 'auto', height: inst.size > 0 ? inst.size + 'px' : 'auto' }">
             <img v-if="inst.key !== 'text_box'" :src="(elements.find(e => e.key === inst.key)?.stateImages
@@ -1093,13 +1094,10 @@ function editTextBox(inst: Instance) {
               }" />
 
             <!-- 文本框渲染层：不参与电路，仅显示可编辑文本 -->
-            <div v-if="inst.key === 'text_box'" class="text-box"
-              :style="{
-                fontSize: (Number(inst.props?.['fontSize'] ?? 24)) + 'px',
-                color: String(inst.props?.['color'] ?? '#111827'),
-              }"
-              @dblclick.stop="editTextBox(inst)"
-              title="双击编辑文本">
+            <div v-if="inst.key === 'text_box'" class="text-box" :style="{
+              fontSize: (Number(inst.props?.['fontSize'] ?? 24)) + 'px',
+              color: String(inst.props?.['color'] ?? '#111827'),
+            }" @dblclick.stop="editTextBox(inst)" title="双击编辑文本">
               {{ String(inst.props?.['text'] ?? '') }}
             </div>
 
@@ -1184,8 +1182,10 @@ function editTextBox(inst: Instance) {
       :style="{ right: showAI ? '360px' : '0' }">
       <div class="panel-inner">
         <div class="prop-title">{{ selectedInst.key }} 属性</div>
-          <!-- 预设按钮区域：显示当前元件的预设，点击一键应用（当未隐藏属性时） -->
-          <div v-if="selectedMeta?.preset?.length && String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'" class="presets">
+        <!-- 预设按钮区域：显示当前元件的预设，点击一键应用（当未隐藏属性时） -->
+        <div
+          v-if="selectedMeta?.preset?.length && String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'"
+          class="presets">
           <span class="preset-label">预设</span>
           <button v-for="p in selectedMeta!.preset" :key="p.name"
             class="preset-btn" @click.stop="applyPreset(p)">{{
@@ -1194,18 +1194,21 @@ function editTextBox(inst: Instance) {
         </div>
         <div class="props">
           <!-- 实时电学量（在隐藏属性=on时不显示） -->
-          <label class="prop-row" v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
+          <label class="prop-row"
+            v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
             <span class="label">电压</span>
             <span>{{ formatValue(instLive[selectedInst!.id]?.v ?? null, 'V')
-              }}</span>
+            }}</span>
           </label>
-          <label class="prop-row" v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
+          <label class="prop-row"
+            v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
             <span class="label">电流</span>
             <span>{{ formatValue(instLive[selectedInst!.id]?.i ?? null, 'A')
-              }}</span>
+            }}</span>
           </label>
           <!-- 旋转控制（在隐藏属性=on时不显示） -->
-          <label class="prop-row" v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
+          <label class="prop-row"
+            v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'">
             <span class="label">旋转</span>
             <input type="range" min="-180" max="180" step="1"
               v-model.number="selectedInst!.rotation" />
@@ -1217,40 +1220,41 @@ function editTextBox(inst: Instance) {
             <button class="rot-btn"
               @click="selectedInst!.rotation = ((selectedInst!.rotation || 0) + 45) % 360">+45°</button>
           </label>
-            <!-- 通用：隐藏属性开关（始终显示） -->
-            <label class="prop-row">
-              <span class="label">隐藏属性</span>
-              <select v-model="selectedInst!.props['hideProps'] as string">
-                <option value="off">off</option>
-                <option value="on">on</option>
+          <!-- 通用：隐藏属性开关（始终显示） -->
+          <label class="prop-row">
+            <span class="label">隐藏属性</span>
+            <select v-model="selectedInst!.props['hideProps'] as string">
+              <option value="off">off</option>
+              <option value="on">on</option>
+            </select>
+          </label>
+          <!-- 业务属性编辑：当未隐藏属性时显示 -->
+          <template
+            v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'"
+            v-for="schema in (elements.find(e => e.key === selectedInst!.key)?.propertySchemas || [])"
+            :key="schema.key">
+            <label class="prop-row" v-if="schema.key !== 'hideProps'">
+              <span class="label">{{ schema.label }}</span>
+              <input v-if="schema.type === 'number'" type="number" step="any"
+                v-model.number="selectedInst!.props[schema.key]" />
+              <input v-else-if="schema.type === 'text'" type="text"
+                v-model="selectedInst!.props[schema.key] as string" />
+              <input v-else-if="schema.type === 'color'" type="color"
+                v-model="selectedInst!.props[schema.key] as string" />
+              <select v-else-if="schema.type === 'select'"
+                v-model="selectedInst!.props[schema.key] as string">
+                <option
+                  v-for="opt in (Array.isArray((schema as any).options) ? (schema as any).options : [])"
+                  :key="typeof opt === 'string' ? opt : (opt.value)"
+                  :value="typeof opt === 'string' ? opt : (opt.value)">
+                  {{ typeof opt === 'string' ? opt : (opt.label || opt.value) }}
+                </option>
               </select>
+              <span class="unit"
+                v-if="schema.type === 'number' && (schema as any).unit">{{
+                  (schema as any).unit }}</span>
             </label>
-            <!-- 业务属性编辑：当未隐藏属性时显示 -->
-            <template v-if="String(selectedInst!.props['hideProps'] ?? 'off') !== 'on'"
-              v-for="schema in (elements.find(e => e.key === selectedInst!.key)?.propertySchemas || [])"
-              :key="schema.key">
-              <label class="prop-row" v-if="schema.key !== 'hideProps'">
-                <span class="label">{{ schema.label }}</span>
-                <input v-if="schema.type === 'number'" type="number" step="any"
-                  v-model.number="selectedInst!.props[schema.key]" />
-                <input v-else-if="schema.type === 'text'" type="text"
-                  v-model="selectedInst!.props[schema.key] as string" />
-                <input v-else-if="schema.type === 'color'" type="color"
-                  v-model="selectedInst!.props[schema.key] as string" />
-                <select v-else-if="schema.type === 'select'"
-                  v-model="selectedInst!.props[schema.key] as string">
-                  <option
-                    v-for="opt in (Array.isArray((schema as any).options) ? (schema as any).options : [])"
-                    :key="typeof opt === 'string' ? opt : (opt.value)"
-                    :value="typeof opt === 'string' ? opt : (opt.value)">
-                    {{ typeof opt === 'string' ? opt : (opt.label || opt.value) }}
-                  </option>
-                </select>
-                <span class="unit"
-                  v-if="schema.type === 'number' && (schema as any).unit">{{
-                    (schema as any).unit }}</span>
-              </label>
-            </template>
+          </template>
         </div>
         <!-- 右侧操作区：删除按钮 -->
         <div class="panel-actions">
diff --git a/src/views/elements.ts b/src/views/elements.ts
index cc717cb..98a9def 100644
--- a/src/views/elements.ts
+++ b/src/views/elements.ts
@@ -150,10 +150,10 @@ export const elements: CircuitElement[] = [
         pinUrl: slidingRheostatPin,
         defaultSize: 180,
         connectionPoints: [
-            { x: 0.15, y: 0.28, name: '下部左侧' },
-            { x: 0.85, y: 0.28, name: '下部右侧' },
-            { x: 0.15, y: 0.76, name: '上部左侧' },
-            { x: 0.85, y: 0.76, name: '上部右侧' },
+            { x: 0.15, y: 0.28, name: '上部左侧' },
+            { x: 0.85, y: 0.28, name: '上部右侧' },
+            { x: 0.15, y: 0.76, name: '下部左侧' },
+            { x: 0.85, y: 0.76, name: '下部右侧' },
         ],
         propertySchemas: [
             { key: 'maxResistance', label: '最大电阻', type: 'number', unit: 'Ω', default: 100 },