diff --git a/xiaoshi-device-balance-card.js b/xiaoshi-device-balance-card.js
new file mode 100644
index 0000000..e302a69
--- /dev/null
+++ b/xiaoshi-device-balance-card.js
@@ -0,0 +1,856 @@
+import { LitElement, html, css } from "https://unpkg.com/lit-element@2.4.0/lit-element.js?module";
+
+class XiaoshiBalanceCardEditor extends LitElement {
+  static get properties() {
+    return {
+      hass: { type: Object },
+      config: { type: Object },
+      _searchTerm: { type: String },
+      _filteredEntities: { type: Array },
+      _showEntityList: { type: Boolean }
+    };
+  }
+
+  static get styles() {
+    return css`
+      .form {
+        display: flex;
+        flex-direction: column;
+        gap: 10px;
+        min-height: 500px;
+      }
+      .form-group {
+        display: flex;
+        flex-direction: column;
+        gap: 5px;
+      }
+      label {
+        font-weight: bold;
+      }
+      select, input, textarea {
+        padding: 8px;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+      }
+      textarea {
+        min-height: 80px;
+        resize: vertical;
+      }
+      .help-text {
+        font-size: 0.85em;
+        color: #666;
+        margin-top: 4px;
+      }
+
+      .entity-selector {
+        position: relative;
+      }
+
+      .entity-search-input {
+        width: 100%;
+        padding: 8px;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+        box-sizing: border-box;
+      }
+
+      .entity-dropdown {
+        position: absolute;
+        top: 100%;
+        left: 0;
+        right: 0;
+        height: 300px;
+        overflow-y: auto;
+        background: white;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
+        z-index: 1000;
+        margin-top: 2px;
+      }
+
+      .entity-option {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        padding: 8px 12px;
+        cursor: pointer;
+        border-bottom: 1px solid #eee;
+      }
+
+      .entity-option:hover {
+        background: #f5f5f5;
+      }
+
+      .entity-option.selected {
+        background: #e3f2fd;
+      }
+
+      .entity-info {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+        flex: 1;
+      }
+
+      .entity-details {
+        flex: 1;
+      }
+
+      .entity-name {
+        font-weight: 500;
+        font-size: 14px;
+        color: #000;
+      }
+
+      .entity-id {
+        font-size: 12px;
+        color: #000;
+        font-family: monospace;
+      }
+
+      .check-icon {
+        color: #4CAF50;
+      }
+
+      .no-results {
+        padding: 12px;
+        text-align: center;
+        color: #666;
+        font-style: italic;
+      }
+
+      .selected-entities {
+        margin-top: 8px;
+      }
+
+      .selected-label {
+        font-size: 12px;
+        font-weight: bold;
+        margin-bottom: 4px;
+        color: #333;
+      }
+
+      .selected-entity-config {
+        margin-bottom: 8px;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+        padding: 8px;
+        background: #f9f9f9;
+      }
+
+      .selected-entity {
+        display: flex;
+        align-items: center;
+        gap: 4px;
+        margin-bottom: 8px;
+        font-size: 12px;
+        color: #000;
+      }
+
+      .attribute-config {
+        margin-top: 4px;
+      }
+
+      .attribute-input {
+        width: 100%;
+        padding: 4px 8px;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+        font-size: 12px;
+        box-sizing: border-box;
+      }
+
+      .remove-btn {
+        background: none;
+        border: none;
+        cursor: pointer;
+        padding: 0;
+        display: flex;
+        align-items: center;
+        color: #666;
+        margin-left: auto;
+      }
+
+      .remove-btn:hover {
+        color: #f44336;
+      }
+    `;
+  }
+
+  render() {
+    if (!this.hass) return html``;
+
+    return html`
+      <div class="form">
+        <div class="form-group">
+          <label>卡片宽度：支持像素(px)和百分比(%)，默认100%</label>
+          <input 
+            type="text" 
+            @change=${this._entityChanged}
+            .value=${this.config.width !== undefined ? this.config.width : '100%'}
+            name="width"
+            placeholder="默认100%"
+          />
+        </div>
+        
+        <div class="form-group">
+          <label>标题名称：配置卡片显示的标题</label>
+          <input 
+            type="text" 
+            @change=${this._entityChanged}
+            .value=${this.config.name !== undefined ? this.config.name : '电话余额信息'}
+            name="name"
+            placeholder="默认：电话余额信息"
+          />
+        </div>
+
+        <div class="form-group">
+          <label>预警值：低于此值的金额将显示为红色</label>
+          <input 
+            type="number" 
+            @change=${this._entityChanged}
+            .value=${this.config.warning !== undefined ? this.config.warning : 20}
+            name="warning"
+            placeholder="默认20"
+            min="0"
+            step="0.01"
+          />
+        </div>
+        
+        <div class="form-group">
+          <label>主题</label>
+          <select 
+            @change=${this._entityChanged}
+            .value=${this.config.theme !== undefined ? this.config.theme : 'on'}
+            name="theme"
+          >
+            <option value="on">浅色主题（白底黑字）</option>
+            <option value="off">深色主题（深灰底白字）</option>
+          </select>
+        </div>
+        
+        <div class="form-group">
+          <label>设备余额实体：搜索并选择实体</label>
+          <div class="entity-selector">
+            <input 
+              type="text" 
+              @input=${this._onEntitySearch}
+              @focus=${this._onEntitySearch}
+              .value=${this._searchTerm || ''}
+              placeholder="搜索实体..."
+              class="entity-search-input"
+            />
+            ${this._showEntityList ? html`
+              <div class="entity-dropdown">
+                ${this._filteredEntities.map(entity => html`
+                  <div 
+                    class="entity-option ${this.config.entities && this.config.entities.some(e => e.entity_id === entity.entity_id) ? 'selected' : ''}"
+                    @click=${() => this._toggleEntity(entity.entity_id)}
+                  >
+                    <div class="entity-info">
+                      <ha-icon icon="${entity.attributes.icon || 'mdi:help-circle'}"></ha-icon>
+                      <div class="entity-details">
+                        <div class="entity-name">${entity.attributes.friendly_name || entity.entity_id}</div>
+                        <div class="entity-id">${entity.entity_id}</div>
+                      </div>
+                    </div>
+                    ${this.config.entities && this.config.entities.some(e => e.entity_id === entity.entity_id) ? 
+                      html`<ha-icon icon="mdi:check" class="check-icon"></ha-icon>` : ''}
+                  </div>
+                `)}
+                ${this._filteredEntities.length === 0 ? html`
+                  <div class="no-results">未找到匹配的实体</div>
+                ` : ''}
+              </div>
+            ` : ''}
+          </div>
+          <div class="selected-entities">
+            ${this.config.entities && this.config.entities.length > 0 ? html`
+              <div class="selected-label">已选择的实体：</div>
+              ${this.config.entities.map((entityConfig, index) => {
+                const entity = this.hass.states[entityConfig.entity_id];
+                return html`
+                  <div class="selected-entity-config">
+                    <div class="selected-entity">
+                      <ha-icon icon="${entity?.attributes.icon || 'mdi:help-circle'}"></ha-icon>
+                      <span>${entity?.attributes.friendly_name || entityConfig.entity_id}</span>
+                      <button class="remove-btn" @click=${() => this._removeEntity(index)}>
+                        <ha-icon icon="mdi:close"></ha-icon>
+                      </button>
+                    </div>
+                    <div class="attribute-config">
+                      <input 
+                        type="text" 
+                        @change=${(e) => this._updateEntityAttribute(index, e.target.value)}
+                        .value=${entityConfig.attribute || ''}
+                        placeholder="留空使用实体状态，或输入属性名"
+                        class="attribute-input"
+                      />
+                    </div>
+                  </div>
+                `;
+              })}
+            ` : ''}
+          </div>
+          <div class="help-text">
+            搜索并选择要显示的设备余额实体，支持多选。每个实体可以配置要显示的属性：<br>
+            • 留空：显示实体的状态值<br>
+            • 输入属性名：显示指定属性的值<br>
+            • 单位会自动从实体的 unit_of_measurement 属性获取，默认为"元"
+          </div>
+        </div>
+      </div>
+
+    `;
+  }
+
+  _entityChanged(e) {
+    const { name, value } = e.target;
+    if (!value && name !== 'theme' && name !== 'width' ) return;
+    
+    let finalValue = value;
+    
+    // 处理不同字段的默认值
+    if (name === 'width') {
+      finalValue = value || '100%';
+    } 
+    
+    this.config = {
+      ...this.config,
+      [name]: finalValue
+    };
+    
+    this.dispatchEvent(new CustomEvent('config-changed', {
+      detail: { config: this.config },
+      bubbles: true,
+      composed: true
+    }));
+  }
+
+  _onEntitySearch(e) {
+    const searchTerm = e.target.value.toLowerCase();
+    this._searchTerm = searchTerm;
+    this._showEntityList = true;
+    
+    if (!this.hass) return;
+    
+    // 获取所有实体
+    const allEntities = Object.values(this.hass.states);
+    
+    // 过滤实体
+    this._filteredEntities = allEntities.filter(entity => {
+      const entityId = entity.entity_id.toLowerCase();
+      const friendlyName = (entity.attributes.friendly_name || '').toLowerCase();
+      
+      return entityId.includes(searchTerm) || friendlyName.includes(searchTerm);
+    }).slice(0, 50); // 限制显示数量
+    
+    this.requestUpdate();
+  }
+
+  _toggleEntity(entityId) {
+    const currentEntities = this.config.entities || [];
+    let newEntities;
+    
+    if (currentEntities.some(e => e.entity_id === entityId)) {
+      // 移除实体
+      newEntities = currentEntities.filter(e => e.entity_id !== entityId);
+    } else {
+      // 添加实体
+      newEntities = [...currentEntities, { entity_id: entityId, attribute: null }];
+    }
+    
+    this.config = {
+      ...this.config,
+      entities: newEntities
+    };
+    
+    this.dispatchEvent(new CustomEvent('config-changed', {
+      detail: { config: this.config },
+      bubbles: true,
+      composed: true
+    }));
+    
+    this.requestUpdate();
+  }
+
+  _removeEntity(index) {
+    const currentEntities = this.config.entities || [];
+    const newEntities = currentEntities.filter((_, i) => i !== index);
+    
+    this.config = {
+      ...this.config,
+      entities: newEntities
+    };
+    
+    this.dispatchEvent(new CustomEvent('config-changed', {
+      detail: { config: this.config },
+      bubbles: true,
+      composed: true
+    }));
+    
+    this.requestUpdate();
+  }
+
+  _updateEntityAttribute(index, attributeValue) {
+    const currentEntities = this.config.entities || [];
+    const newEntities = [...currentEntities];
+    
+    if (newEntities[index]) {
+      newEntities[index] = {
+        ...newEntities[index],
+        attribute: attributeValue.trim() || null
+      };
+    }
+    
+    this.config = {
+      ...this.config,
+      entities: newEntities
+    };
+    
+    this.dispatchEvent(new CustomEvent('config-changed', {
+      detail: { config: this.config },
+      bubbles: true,
+      composed: true
+    }));
+    
+    this.requestUpdate();
+  }
+
+  // 点击外部关闭下拉列表
+  firstUpdated() {
+    document.addEventListener('click', (e) => {
+      if (!e.target.closest('.entity-selector')) {
+        this._showEntityList = false;
+        this.requestUpdate();
+      }
+    });
+  }
+
+  constructor() {
+    super();
+    this._searchTerm = '';
+    this._filteredEntities = [];
+    this._showEntityList = false;
+  }
+
+  setConfig(config) {
+    this.config = config;
+  }
+} 
+customElements.define('xiaoshi-balance-card-editor', XiaoshiBalanceCardEditor);
+
+class XiaoshiBalanceCard extends LitElement {
+  static get properties() {
+    return {
+      hass: Object,
+      config: Object,
+      _oilPriceData: Array,
+      _loading: Boolean,
+      _refreshInterval: Number,
+      theme: { type: String }
+    };
+  }
+
+  static get styles() {
+    return css`
+      :host {
+        display: block;
+        width: var(--card-width, 100%);
+      }
+
+      ha-card {
+        width: 100%;
+        height: 100%;
+        display: flex;
+        flex-direction: column;
+        background: var(--bg-color, #fff);
+        border-radius: 12px;
+      }
+
+      /*标题容器*/
+      .card-header {
+        display: flex;
+        justify-content: space-between;
+        align-items: center;
+        padding: 16px;
+        background: var(--bg-color, #fff);
+        
+        border-radius: 12px;
+      }
+
+      /*标题红色圆点*/
+      .offline-indicator {
+        display: inline-block;
+        width: 8px;
+        height: 8px;
+        border-radius: 50%;
+        margin-right: 8px;
+      }
+
+      /*标题红色圆点动画*/
+      @keyframes pulse {
+        0% { opacity: 1; }
+        50% { opacity: 0.5; }
+        100% { opacity: 1; }
+      }
+
+      /*标题*/
+      .card-title {
+        font-size: 20px;
+        font-weight: 500;
+        color: var(--fg-color, #000);
+        height: 30px;
+        line-height: 30px;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        
+
+      }
+
+      /*标题统计数字*/
+      .device-count {
+        color: var(--fg-color, #000);
+        border-radius: 8px;
+        font-size: 13px;
+        width: 30px;
+        height: 30px;
+        text-align: center;
+        line-height: 30px;
+        font-weight: bold;
+        padding: 0px;
+      }
+      
+      .device-count.non-zero {
+        background: rgb(2, 250, 250, 0.5);
+      }
+      
+      .device-count.zero {
+        background: rgb(0, 205, 0);
+      }
+
+      /*标题刷新按钮*/
+      .refresh-btn {
+        color: var(--fg-color, #fff);
+        border: none;
+        border-radius: 8px;
+        padding: 5px;
+        cursor: pointer;
+        font-size: 13px;
+        width: 50px;
+        height: 30px;
+        line-height: 30px;
+        text-align: center;
+        font-weight: bold;
+        padding: 0px;
+      }
+
+      /*2级标题*/
+      .section-divider {
+        margin: 0 0 8px 0;
+        padding: 8px 8px;
+        background: var(--bg-color, #fff);
+        font-weight: 500;
+        color: var(--fg-color, #000);
+        border-top: 1px solid rgb(150,150,150,0.5);
+        border-bottom: 1px solid rgb(150,150,150,0.5);
+        margin: 0 16px 0 16px;
+
+      }
+      
+      /*2级标题字体*/
+      .section-title {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        color: var(--fg-color, #000);
+        font-size: 13px;
+      }
+
+      /*2级标题,统计数量字体*/
+      .section-count {
+        background: rgb(255,0,0,0.5);
+        color: var(--fg-color, #000);
+        border-radius: 12px;
+        width: 15px;
+        height: 15px;
+        text-align: center;
+        line-height: 15px;
+        padding: 3px;
+        font-size: 12px;
+        font-weight: bold;
+      }
+
+      /*设备、实体明细*/
+      .device-item {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        margin: 0px 16px;
+        padding: 8px 0;
+        border-bottom: 1px solid rgb(150,150,150,0.5);
+        cursor: pointer;
+        transition: background-color 0.2s;
+      }
+
+      .device-item:first-child {
+        border-top: 1px solid rgb(150,150,150,0.5);
+      }
+
+      .device-item:hover {
+        background-color: rgba(150,150,150,0.1);
+      }
+
+      /*设备、实体明细背景*/
+      .devices-list {
+        flex: 1;
+        overflow-y: auto;
+        min-height: 0;
+        padding: 0 0 8px 0;
+      }
+
+      .device-left {
+        display: flex;
+        align-items: center;
+        flex: 1;
+        min-width: 0;
+      }
+
+      .device-icon {
+        margin-right: 12px;
+        color: var(--fg-color, #000);
+        flex-shrink: 0;
+      }
+
+      .device-name {
+        color: var(--fg-color, #000);
+        font-size: 12px;
+        white-space: nowrap;
+        overflow: hidden;
+        text-overflow: ellipsis;
+      }
+
+      .device-value {
+        color: var(--fg-color, #000);
+        font-size: 12px;
+        margin-left: auto;
+        flex-shrink: 0;
+        font-weight: bold;
+      }
+
+      .device-value.warning {
+        color: #F44336;
+      }
+
+      .device-unit {
+        font-size: 12px;
+        color: var(--fg-color, #000);
+        margin-left: 4px;
+        font-weight: bold;
+      }
+
+      .device-unit.warning {
+        color: #F44336;
+      }
+
+      .no-devices {
+        text-align: center;
+        padding: 10px 0;
+        color: var(--fg-color, #000);
+      }
+
+      .loading {
+        text-align: center;
+        padding: 10px 0;
+        color: var(--fg-color, #000);
+      }
+    `;
+  }
+
+  constructor() {
+    super();
+    this._oilPriceData = [];
+    this._loading = false;
+    this._refreshInterval = null;
+    this.theme = 'on';
+  }
+
+  static getConfigElement() {
+    return document.createElement("xiaoshi-balance-card-editor");
+  }
+
+  connectedCallback() {
+    super.connectedCallback();
+    this._loadOilPriceData();
+    
+    // 设置主题属性
+    this.setAttribute('theme', this._evaluateTheme());
+    
+    // 每300秒刷新一次数据，减少频繁刷新
+    this._refreshInterval = setInterval(() => {
+      this._loadOilPriceData();
+    }, 300000);
+  }
+
+  _evaluateTheme() {
+    try {
+      if (!this.config || !this.config.theme) return 'on';
+      if (typeof this.config.theme === 'function') {
+          return this.config.theme();
+      }
+      if (typeof this.config.theme === 'string' && 
+              (this.config.theme.includes('return') || this.config.theme.includes('=>'))) {
+          return (new Function(`return ${this.config.theme}`))();
+      }
+      return this.config.theme;
+    } catch(e) {
+      console.error('计算主题时出错:', e);
+      return 'on';
+    }
+  }
+
+  disconnectedCallback() {
+    super.disconnectedCallback();
+    if (this._refreshInterval) {
+      clearInterval(this._refreshInterval);
+    }
+  }
+
+  async _loadOilPriceData() {
+    if (!this.hass) return;
+    
+    this._loading = true;
+    this.requestUpdate();
+
+    try {
+      const entities = this.config.entities || [];
+      const balanceData = [];
+
+      for (const entityConfig of entities) {
+        const entityId = entityConfig.entity_id;
+        const attributeName = entityConfig.attribute;
+        const entity = this.hass.states[entityId];
+        if (!entity) continue;
+
+        const attributes = entity.attributes;
+        let value = entity.state;
+        let unit = '元';
+
+        // 如果指定了属性，则使用属性值
+        if (attributeName && attributes[attributeName] !== undefined) {
+          value = attributes[attributeName];
+        }
+
+        // 尝试从属性中获取单位
+        if (attributes.unit_of_measurement) {
+          unit = attributes.unit_of_measurement;
+        }
+
+        balanceData.push({
+          entity_id: entityId,
+          friendly_name: attributes.friendly_name || entityId,
+          value: value,
+          unit: unit,
+          icon: attributes.icon || 'mdi:help-circle'
+        });
+      }
+
+      this._oilPriceData = balanceData;
+    } catch (error) {
+      console.error('加载设备余额数据失败:', error);
+      this._oilPriceData = [];
+    }
+
+    this._loading = false;
+  }
+
+  _handleRefresh() {
+    this._loadOilPriceData();
+    navigator.vibrate(50);
+  }
+
+  _handleEntityClick(entity) {
+    navigator.vibrate(50);
+    // 点击实体时打开实体详情页
+    if (entity.entity_id) {
+      const evt = new Event('hass-more-info', { composed: true });
+      evt.detail = { entityId: entity.entity_id };
+      this.dispatchEvent(evt);
+    }
+  }
+
+
+  render() {
+    if (!this.hass) {
+      return html`<div class="loading">等待Home Assistant连接...</div>`;
+    }
+    // 获取主题和颜色
+    const theme = this._evaluateTheme();
+    const fgColor = theme === 'on' ? 'rgb(0, 0, 0)' : 'rgb(255, 255, 255)';
+    const bgColor = theme === 'on' ? 'rgb(255, 255, 255)' : 'rgb(50, 50, 50)';
+    
+    return html`
+      <ha-card style="--fg-color: ${fgColor}; --bg-color: ${bgColor};">
+        <div class="card-header">
+          <div class="card-title">
+            <span class="offline-indicator" style="background: rgb(0,222,220); animation: pulse 2s infinite"></span>
+            ${this.config.name || '电话余额信息'}
+          </div>
+        </div>
+        
+        <div class="devices-list">
+          ${this._loading ? 
+            html`<div class="loading">加载中...</div>` :
+            
+            this._oilPriceData.length === 0 ? 
+              html`<div class="no-devices">请配置余额实体</div>` :
+              html`
+                ${this._oilPriceData.map(balanceData => {
+                  const warningThreshold = this.config.warning || 20;
+                  const numericValue = parseFloat(balanceData.value);
+                  const isWarning = !isNaN(numericValue) && numericValue < warningThreshold;
+                  
+                  return html`
+                    <div class="device-item" @click=${() => this._handleEntityClick(balanceData)}>
+                      <div class="device-left">
+                        <ha-icon class="device-icon" icon="${balanceData.icon}"></ha-icon>
+                        <div class="device-name">${balanceData.friendly_name}</div>
+                      </div>
+                      <div class="device-value ${isWarning ? 'warning' : ''}">
+                        ${balanceData.value}
+                        <span class="device-unit ${isWarning ? 'warning' : ''}">${balanceData.unit}</span>
+                      </div>
+                    </div>
+                  `;
+                })}
+              `
+          }
+        </div>
+      </ha-card>
+    `;
+  }
+
+  setConfig(config) {
+    this.config = config;
+    
+    // 设置CSS变量来控制卡片的宽度和高度
+    if (config.width) {
+      this.style.setProperty('--card-width', config.width);
+    }
+    
+    // 设置主题
+    if (config.theme) {
+      this.setAttribute('theme', config.theme);
+    }
+  }
+
+  getCardSize() {
+    // 根据设备余额实体数量动态计算卡片大小
+    const baseSize = 3;
+    const entitySize = Math.max(0, Math.min(this._oilPriceData.length * 2, 10));
+    return baseSize + entitySize;
+  }
+}
+customElements.define('xiaoshi-balance-card', XiaoshiBalanceCard);