优化风格

src/App.tsx

@@ -498,12 +498,13 @@ export default function App() {
 
   const mappedRows = useMemo(
     () =>
-      activeRows.map((row) =>
+      activeRows.map((row, rowIndex) =>
         applyRowVariableMapping(
           row,
           variableColumnMapping,
           templateVariables,
-          workingTemplate.variableDefaults
+          workingTemplate.variableDefaults,
+          rowIndex
         )
       ),
     [activeRows, variableColumnMapping, templateVariables, workingTemplate.variableDefaults]
@@ -530,12 +531,13 @@ export default function App() {
 
   const appliedMappedRows = useMemo(() => {
     if (!appliedExportData) return [];
-    return appliedExportData.rows.map((row) =>
+    return appliedExportData.rows.map((row, rowIndex) =>
       applyRowVariableMapping(
         row,
         appliedExportData.mapping,
         templateVariables,
-        workingTemplate.variableDefaults
+        workingTemplate.variableDefaults,
+        rowIndex
       )
     );
   }, [appliedExportData, templateVariables, workingTemplate.variableDefaults]);

src/components/DataImporter.tsx

@@ -3,6 +3,7 @@ import * as XLSX from 'xlsx';
 import { ImportData, RecordRow } from '../types';
 import { FileSpreadsheet, Upload, Download, Trash2 } from 'lucide-react';
 import { useAppDialog } from './AppDialog';
+import { FieldSelect } from './PsSelect';
 
 export function downloadDataTemplate(templateName: string, templateVariables: string[]) {
   const columns = templateVariables.length > 0 ? templateVariables : ['数据'];
@@ -331,7 +332,7 @@ export const DataImporter: React.FC<DataImporterProps> = ({
           >
             工作表
           </label>
-          <select
+          <FieldSelect
             value={importData.currentSheet}
             disabled={sheetLoading}
             onChange={(e) => void handleSheetChange(e.target.value)}
@@ -342,7 +343,7 @@ export const DataImporter: React.FC<DataImporterProps> = ({
                 {sheet}
               </option>
             ))}
-          </select>
+          </FieldSelect>
           {sheetLoading && (
             <p className={`${isPs ? 'text-[10px] text-[#777]' : 'text-[10px] text-gray-400'}`}>
               切换中…

src/components/DataRangeFields.tsx

@@ -3,6 +3,7 @@ import { Filter } from 'lucide-react';
 import { ExportRangeConfig, LabelTemplate, PaperConfig, RecordRow } from '../types';
 import { buildPrintablePages } from '../utils';
 import { PageInput } from './PreviewGrid';
+import { FieldSelect } from './PsSelect';
 
 interface DataRangeFieldsProps {
   variant?: 'ps' | 'mobile';
@@ -36,7 +37,7 @@ export const DataRangeFields: React.FC<DataRangeFieldsProps> = ({
       <div>
         {isMobile && <label className="mobile-field-label">范围</label>}
         {/* {!isMobile && <label className="ps-field-label">范围</label>} */}
-        <select
+        <FieldSelect
           value={exportRange.mode}
           disabled={disabled}
           onChange={(e) => patchRange({ mode: e.target.value as ExportRangeConfig['mode'] })}
@@ -46,7 +47,7 @@ export const DataRangeFields: React.FC<DataRangeFieldsProps> = ({
           <option value="odd">仅限奇数序号的行</option>
           <option value="even">仅限偶数序号的行</option>
           <option value="custom">自定义行序号</option>
-        </select>
+        </FieldSelect>
       </div>
       {exportRange.mode === 'custom' && (
         <div>

src/components/ExportSidebar.tsx

@@ -6,6 +6,7 @@ import { VariableMappingPanel } from './VariableMappingPanel';
 import { PaperSettingsPanel, PageInput } from './PreviewGrid';
 import { CollapsiblePanelSection } from './CollapsiblePanelSection';
 import { DataRangeFields } from './DataRangeFields';
+import { FieldSelect } from './PsSelect';
 
 interface ExportSidebarProps {
   importData: ImportData | null;
@@ -220,7 +221,7 @@ export const ExportSidebar: React.FC<ExportSidebarProps> = ({
           >
             <div>
               <label className="ps-field-label">线型</label>
-              <select
+              <FieldSelect
                 value={cutLine.style}
                 onChange={(e) =>
                   onChangeCutLine({
@@ -232,7 +233,7 @@ export const ExportSidebar: React.FC<ExportSidebarProps> = ({
               >
                 <option value="dashed">虚线</option>
                 <option value="solid">实线</option>
-              </select>
+              </FieldSelect>
             </div>
             <div>
               <label className="ps-field-label">线粗细 (mm)</label>

src/components/MobileExportLayoutPanel.tsx

@@ -8,6 +8,7 @@ import {
   RecordRow,
 } from '../types';
 import { PaperSettingsPanel, PageInput } from './PreviewGrid';
+import { FieldSelect } from './PsSelect';
 
 interface MobileExportLayoutPanelProps {
   template: LabelTemplate;
@@ -59,7 +60,7 @@ export const MobileExportLayoutPanel: React.FC<MobileExportLayoutPanelProps> = (
         >
           <div>
             <label className="ps-field-label">线型</label>
-            <select
+            <FieldSelect
               value={cutLine.style}
               onChange={(e) =>
                 onChangeCutLine({
@@ -71,7 +72,7 @@ export const MobileExportLayoutPanel: React.FC<MobileExportLayoutPanelProps> = (
             >
               <option value="dashed">虚线</option>
               <option value="solid">实线</option>
-            </select>
+            </FieldSelect>
           </div>
           <div>
             <label className="ps-field-label">线粗细 (mm)</label>

src/components/PreviewGrid.tsx

@@ -17,6 +17,7 @@ import {
 import { CanvasLabelImage } from './CanvasLabelImage';
 import { CommitInput } from './CommitInput';
 import { useAppDialog } from './AppDialog';
+import { FieldSelect } from './PsSelect';
 import { FileDown, RefreshCcw, X } from 'lucide-react';
 
 interface PageInputProps extends Omit<React.InputHTMLAttributes<HTMLInputElement>, 'onChange'> {
@@ -316,7 +317,7 @@ export const PaperSettingsPanel: React.FC<PaperSettingsPanelProps> = ({
           <h4 className={sectionTitleClass}>纸张</h4>
           <div>
             <label className={labelClass}>纸张类型</label>
-            <select
+            <FieldSelect
               value={draftPaper.type}
               onChange={(e) => handlePaperTypeChange(e.target.value as PaperType)}
               className={selectClass}
@@ -325,7 +326,7 @@ export const PaperSettingsPanel: React.FC<PaperSettingsPanelProps> = ({
               <option value="A5">A5 (148×210 mm)</option>
               <option value="A6">A6 (105×148 mm)</option>
               <option value="custom">自定义尺寸</option>
-            </select>
+            </FieldSelect>
           </div>
 
           {draftPaper.type === 'custom' && (
@@ -499,14 +500,14 @@ export const PaperSettingsPanel: React.FC<PaperSettingsPanelProps> = ({
           </div>
           <div>
             <label className={labelClass}>填充顺序</label>
-            <select
+            <FieldSelect
               value={draftPaper.flow}
               onChange={(e) => patchDraftPaper({ flow: e.target.value as PaperConfig['flow'] })}
               className={selectClass}
             >
               <option value="left-right-top-bottom">左右 → 上下（行优先）</option>
               <option value="top-bottom-left-right">上下 → 左右（列优先）</option>
-            </select>
+            </FieldSelect>
           </div>
         </div>
 

src/components/PropSidebar.tsx

@@ -20,6 +20,7 @@ import {
   type AlignMode,
 } from '../elementAlign';
 import { CollapsiblePanelSection } from './CollapsiblePanelSection';
+import { FieldSelect } from './PsSelect';
 import { CommitInput } from './CommitInput';
 import { useAppDialog } from './AppDialog';
 import { useIsNarrowScreen } from '../hooks/useIsMobile';
@@ -682,7 +683,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
           <div className="text-[10px] font-bold text-[#31a8ff]">显示控制</div>
           <div>
             <label className="ps-field-label">显示模式</label>
-            <select
+            <FieldSelect
               value={isConditionalVisibility(selectedElem) ? 'conditional' : 'always'}
               onChange={(e) => {
                 const conditional = e.target.value === 'conditional';
@@ -710,7 +711,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
             >
               <option value="always">始终显示</option>
               <option value="conditional">按条件显示</option>
-            </select>
+            </FieldSelect>
           </div>
           {isConditionalVisibility(selectedElem) && (() => {
             const rules = resolveVisibilityRules(selectedElem);
@@ -962,7 +963,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
               <div className="grid grid-cols-2 gap-2">
                 <div>
                   <label className="ps-field-label">显示格式</label>
-                  <select
+                  <FieldSelect
                     value={selectedElem.textFormat || 'text'}
                     onChange={(e) =>
                       handleElemChange({
@@ -980,7 +981,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                     <option value="number">数值</option>
                     <option value="percent">百分比</option>
                     <option value="currency">货币 (¥)</option>
-                  </select>
+                  </FieldSelect>
                 </div>
                 {(selectedElem.textFormat === 'number' ||
                   selectedElem.textFormat === 'percent' ||
@@ -1004,7 +1005,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                       </div>
                       <div className="col-span-2">
                         <label className="ps-field-label">数值显示部分</label>
-                        <select
+                        <FieldSelect
                           value={selectedElem.numberPartDisplay ?? 'full'}
                           onChange={(e) =>
                             handleElemChange({
@@ -1020,7 +1021,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                           <option value="full">完整数值</option>
                           <option value="integer">仅整数部分（如 19.9 → 19）</option>
                           <option value="fraction">仅小数部分（如 19.9 → .9）</option>
-                        </select>
+                        </FieldSelect>
                         <p className="text-[9px] text-[#666] mt-1 leading-relaxed">
                           可将价格拆成两个文本元素分别设置字号，如「19」与「.9」
                         </p>
@@ -1045,7 +1046,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                 </div>
                 <div>
                   <label className="ps-field-label">字体库</label>
-                  <select
+                  <FieldSelect
                     value={selectedElem.fontFamily}
                     onChange={(e) =>
                       handleElemChange({
@@ -1058,7 +1059,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                     <option value="sans">黑体 (Sans)</option>
                     <option value="serif">宋体 (Serif)</option>
                     <option value="mono">等宽体 (Mono)</option>
-                  </select>
+                  </FieldSelect>
                 </div>
               </div>
 
@@ -1303,7 +1304,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
               </h5>
               <div>
                 <label className="ps-field-label">条码码制</label>
-                <select
+                <FieldSelect
                   value={selectedElem.barcodeFormat}
                   onChange={(e) =>
                     handleElemChange({
@@ -1317,7 +1318,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                   <option value="CODE39">CODE 39 (数字和字符)</option>
                   <option value="EAN13">EAN 13 (纯商品数字 13位)</option>
                   <option value="ITF">ITF (交插双五码)</option>
-                </select>
+                </FieldSelect>
               </div>
 
               <label className="flex items-center gap-2 cursor-pointer mt-1">
@@ -1341,7 +1342,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
               </h5>
               <div>
                 <label className="ps-field-label">适应方式</label>
-                <select
+                <FieldSelect
                   value={selectedElem.imageFit ?? 'contain'}
                   onChange={(e) =>
                     handleElemChange({
@@ -1354,7 +1355,7 @@ export const PropSidebar: React.FC<PropSidebarProps> = ({
                   <option value="contain">包含 (contain)</option>
                   <option value="cover">覆盖 (cover)</option>
                   <option value="fill">拉伸 (fill)</option>
-                </select>
+                </FieldSelect>
               </div>
             </div>
           )}

src/components/PsSelect.tsx

@@ -0,0 +1,237 @@
+import React, {
+  useEffect,
+  useLayoutEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
+import { createPortal } from 'react-dom';
+
+const PANEL_GAP = 4;
+const VIEWPORT_PAD = 8;
+
+type ParsedOption = {
+  value: string;
+  label: string;
+  disabled?: boolean;
+};
+
+function optionLabel(children: React.ReactNode): string {
+  if (children === null || children === undefined) return '';
+  if (typeof children === 'string' || typeof children === 'number') return String(children);
+  return React.Children.toArray(children).join('');
+}
+
+function parseSelectOptions(children: React.ReactNode): ParsedOption[] {
+  const out: ParsedOption[] = [];
+  React.Children.forEach(children, (child) => {
+    if (!React.isValidElement(child) || child.type !== 'option') return;
+    const props = child.props as {
+      value?: string | number;
+      disabled?: boolean;
+      children?: React.ReactNode;
+    };
+    out.push({
+      value: String(props.value ?? ''),
+      label: optionLabel(props.children),
+      disabled: props.disabled,
+    });
+  });
+  return out;
+}
+
+function useSelectPanelPosition(
+  open: boolean,
+  anchorRef: React.RefObject<HTMLElement | null>,
+  panelRef: React.RefObject<HTMLElement | null>
+) {
+  const [coords, setCoords] = useState<{ top: number; left: number; width: number } | null>(
+    null
+  );
+
+  useLayoutEffect(() => {
+    if (!open) {
+      setCoords(null);
+      return;
+    }
+
+    const update = () => {
+      const anchor = anchorRef.current;
+      const panel = panelRef.current;
+      if (!anchor || !panel) return;
+
+      const rect = anchor.getBoundingClientRect();
+      const panelHeight = panel.offsetHeight;
+      let top = rect.bottom + PANEL_GAP;
+      if (top + panelHeight > window.innerHeight - VIEWPORT_PAD) {
+        top = rect.top - panelHeight - PANEL_GAP;
+      }
+      top = Math.max(
+        VIEWPORT_PAD,
+        Math.min(top, window.innerHeight - panelHeight - VIEWPORT_PAD)
+      );
+
+      const width = rect.width;
+      let left = rect.left;
+      left = Math.max(VIEWPORT_PAD, Math.min(left, window.innerWidth - width - VIEWPORT_PAD));
+
+      setCoords({ top, left, width });
+    };
+
+    update();
+    const raf = requestAnimationFrame(update);
+    window.addEventListener('resize', update);
+    window.addEventListener('scroll', update, true);
+    return () => {
+      cancelAnimationFrame(raf);
+      window.removeEventListener('resize', update);
+      window.removeEventListener('scroll', update, true);
+    };
+  }, [open, anchorRef, panelRef]);
+
+  return coords;
+}
+
+export interface PsSelectProps
+  extends Omit<React.SelectHTMLAttributes<HTMLSelectElement>, 'onChange' | 'value'> {
+  value: string;
+  onChange: React.ChangeEventHandler<HTMLSelectElement>;
+}
+
+export const PsSelect: React.FC<PsSelectProps> = ({
+  value,
+  onChange,
+  className = 'ps-field',
+  disabled,
+  id,
+  children,
+  ...rest
+}) => {
+  const options = useMemo(() => parseSelectOptions(children), [children]);
+  const selected = options.find((opt) => opt.value === value);
+  const [open, setOpen] = useState(false);
+  const anchorRef = useRef<HTMLButtonElement>(null);
+  const panelRef = useRef<HTMLDivElement>(null);
+  const coords = useSelectPanelPosition(open, anchorRef, panelRef);
+
+  const pick = (next: string) => {
+    onChange({ target: { value: next } } as React.ChangeEvent<HTMLSelectElement>);
+    setOpen(false);
+  };
+
+  useEffect(() => {
+    if (!open) return;
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        e.preventDefault();
+        setOpen(false);
+      }
+    };
+    window.addEventListener('keydown', onKeyDown);
+    return () => window.removeEventListener('keydown', onKeyDown);
+  }, [open]);
+
+  useEffect(() => {
+    if (!open) return;
+    const onPointerDown = (e: PointerEvent) => {
+      const target = e.target as Node;
+      if (panelRef.current?.contains(target) || anchorRef.current?.contains(target)) return;
+      setOpen(false);
+    };
+    document.addEventListener('pointerdown', onPointerDown);
+    return () => document.removeEventListener('pointerdown', onPointerDown);
+  }, [open]);
+
+  return (
+    <>
+      <button
+        {...rest}
+        ref={anchorRef}
+        type="button"
+        id={id}
+        disabled={disabled}
+        className={`ps-select-trigger ${className}`.trim()}
+        aria-haspopup="listbox"
+        aria-expanded={open}
+        onClick={() => {
+          if (disabled) return;
+          setOpen((v) => !v);
+        }}
+      >
+        <span className="ps-select-trigger-label truncate">
+          {selected?.label ?? (value ? value : '\u00A0')}
+        </span>
+      </button>
+      {open &&
+        typeof document !== 'undefined' &&
+        createPortal(
+          <div
+            ref={panelRef}
+            className="ps-select-panel"
+            role="listbox"
+            aria-labelledby={id}
+            style={{
+              position: 'fixed',
+              top: coords?.top ?? 0,
+              left: coords?.left ?? 0,
+              width: coords?.width,
+              visibility: coords ? 'visible' : 'hidden',
+              zIndex: 10000,
+            }}
+          >
+            {options.map((opt, index) => (
+              <button
+                key={`${opt.value}-${index}`}
+                type="button"
+                role="option"
+                aria-selected={opt.value === value}
+                disabled={opt.disabled}
+                className={`ps-select-option${opt.value === value ? ' selected' : ''}`}
+                onClick={() => {
+                  if (opt.disabled) return;
+                  pick(opt.value);
+                }}
+              >
+                {opt.label}
+              </button>
+            ))}
+          </div>,
+          document.body
+        )}
+    </>
+  );
+};
+
+/** ps-field 时用 PsSelect，否则保留原生 select */
+export const FieldSelect: React.FC<React.SelectHTMLAttributes<HTMLSelectElement>> = (props) => {
+  const { className = '', children, onChange, value, disabled, id, ...rest } = props;
+  const usePsSelect = /\bps-field\b/.test(className);
+
+  if (usePsSelect && onChange) {
+    return (
+      <PsSelect
+        className={className}
+        value={value === undefined || value === null ? '' : String(value)}
+        onChange={onChange}
+        disabled={disabled}
+        id={id}
+        {...rest}
+      >
+        {children}
+      </PsSelect>
+    );
+  }
+
+  return (
+    <select
+      className={className}
+      value={value}
+      onChange={onChange}
+      disabled={disabled}
+      id={id}
+      {...rest}
+    >
+      {children}
+    </select>
+  );
+};

src/components/ValueExtractFields.tsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import { TemplateElement } from '../types';
 import { CommitInput } from './CommitInput';
+import { FieldSelect } from './PsSelect';
 
 interface ValueExtractFieldsProps {
   elem: TemplateElement;
@@ -21,7 +22,7 @@ export const ValueExtractFields: React.FC<ValueExtractFieldsProps> = ({ elem, on
     <div className="space-y-2">
       <div>
         <label className="ps-field-label">值提取</label>
-        <select
+        <FieldSelect
           value={extractMode}
           onChange={(e) => {
             const mode = e.target.value as 'none' | 'split' | 'prefix' | 'suffix';
@@ -51,7 +52,7 @@ export const ValueExtractFields: React.FC<ValueExtractFieldsProps> = ({ elem, on
           <option value="split">按分隔符</option>
           <option value="prefix">前 N 位</option>
           <option value="suffix">后 N 位</option>
-        </select>
+        </FieldSelect>
       </div>
       {extractMode === 'split' && (
         <div className="grid grid-cols-2 gap-2">

src/components/VariableMappingPanel.tsx

@@ -1,5 +1,10 @@
 import React from 'react';
-import { VARIABLE_MAPPING_USE_DEFAULT } from '../utils';
+import {
+  VARIABLE_MAPPING_USE_DEFAULT,
+  VARIABLE_MAPPING_USE_ROW_INDEX,
+  VARIABLE_MAPPING_ROW_INDEX_LABEL,
+} from '../utils';
+import { FieldSelect } from './PsSelect';
 
 interface VariableMappingPanelProps {
   variables: string[];
@@ -110,19 +115,22 @@ export const VariableMappingPanel: React.FC<VariableMappingPanelProps> = ({
                   isMobile ? 'text-sm text-indigo-600' : isPs ? 'text-[#31a8ff]' : 'text-indigo-700'
                 }`}
               >{`{${varName}}`}</span>
-              <select
+              <FieldSelect
                 value={mappedCol}
                 onChange={(e) => onChangeMapping({ ...mapping, [varName]: e.target.value })}
                 className={selectClass}
               >
-                <option value="">请选择列或默认值</option>
+                <option value="">请选择列、数据序号或默认值</option>
                 <option value={VARIABLE_MAPPING_USE_DEFAULT}>{useDefaultLabel}</option>
+                <option value={VARIABLE_MAPPING_USE_ROW_INDEX}>
+                  {VARIABLE_MAPPING_ROW_INDEX_LABEL}
+                </option>
                 {columns.map((col) => (
                   <option key={col} value={col}>
                     {col}
                   </option>
                 ))}
-              </select>
+              </FieldSelect>
               {mappedCol === VARIABLE_MAPPING_USE_DEFAULT && !defaultVal && (
                 <p
                   className={

src/components/VisibilityRuleForm.tsx

@@ -7,6 +7,7 @@ import {
   VISIBILITY_RULE_TARGET_LABELS,
 } from '../types';
 import { visibilityOperatorNeedsValue } from '../utils';
+import { FieldSelect } from './PsSelect';
 
 export interface VisibilityRuleDraft {
   target: VisibilityRuleTarget;
@@ -32,7 +33,7 @@ export const VisibilityRuleForm: React.FC<VisibilityRuleFormProps> = ({
     <div className="space-y-3">
       <div>
         <label className="ps-field-label">条件对象</label>
-        <select
+        <FieldSelect
           value={target}
           onChange={(e) => {
             const nextTarget = e.target.value as VisibilityRuleTarget;
@@ -48,12 +49,12 @@ export const VisibilityRuleForm: React.FC<VisibilityRuleFormProps> = ({
               {VISIBILITY_RULE_TARGET_LABELS[t]}
             </option>
           ))}
-        </select>
+        </FieldSelect>
       </div>
       {target === 'variable' ? (
         <div>
           <label className="ps-field-label">变量</label>
-          <select
+          <FieldSelect
             value={rule.variable}
             onChange={(e) => onChange({ variable: e.target.value })}
             className="ps-field text-[11px] w-full mt-0.5"
@@ -64,7 +65,7 @@ export const VisibilityRuleForm: React.FC<VisibilityRuleFormProps> = ({
                 {v}
               </option>
             ))}
-          </select>
+          </FieldSelect>
           {variableOptions.length === 0 && (
             <p className="text-[9px] text-[#666] mt-1 leading-relaxed">
               请先在「变量管理」中添加变量，或改用「内容值」作为条件对象
@@ -78,7 +79,7 @@ export const VisibilityRuleForm: React.FC<VisibilityRuleFormProps> = ({
       )}
       <div>
         <label className="ps-field-label">条件</label>
-        <select
+        <FieldSelect
           value={rule.operator}
           onChange={(e) => {
             const operator = e.target.value as VisibilityOperator;
@@ -94,7 +95,7 @@ export const VisibilityRuleForm: React.FC<VisibilityRuleFormProps> = ({
               {VISIBILITY_OPERATOR_LABELS[op]}
             </option>
           ))}
-        </select>
+        </FieldSelect>
       </div>
       {visibilityOperatorNeedsValue(rule.operator) && (
         <div>

src/index.css

@@ -340,6 +340,89 @@ body {
   font-family: var(--font-mono);
 }
 
+.ps-field:is(select),
+.ps-select-trigger.ps-field,
+.ps-field.ps-select-trigger,
+.ps-panel-body select:not(.mobile-field),
+.ps-modal select {
+  -webkit-appearance: none;
+  appearance: none;
+  color-scheme: dark;
+  background-color: var(--color-ps-input);
+  padding-right: calc(0.625rem + 0.75rem + 0.625rem);
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999999' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
+  background-repeat: no-repeat;
+  background-position: right 0.625rem center;
+  background-size: 0.65rem;
+  cursor: pointer;
+}
+
+.ps-select-trigger {
+  display: flex;
+  align-items: center;
+  width: 100%;
+  text-align: left;
+  box-sizing: border-box;
+}
+
+.ps-select-trigger-label {
+  flex: 1;
+  min-width: 0;
+}
+
+.ps-select-panel {
+  box-sizing: border-box;
+  background: var(--color-ps-input);
+  border: 1px solid var(--color-ps-input-border);
+  border-radius: 0.25rem;
+  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
+  max-height: min(240px, 50vh);
+  overflow-y: auto;
+  overscroll-behavior: contain;
+  padding: 0.25rem 0;
+}
+
+.ps-select-option {
+  display: block;
+  width: 100%;
+  padding: 0.375rem 0.625rem;
+  text-align: left;
+  font-size: 0.75rem;
+  line-height: 1.4;
+  color: var(--color-ps-text);
+  background: transparent;
+  border: none;
+  cursor: pointer;
+}
+
+.ps-select-option:hover:not(:disabled) {
+  background: #2d2d2d;
+}
+
+.ps-select-option.selected {
+  color: var(--color-ps-accent);
+  background: #2d2d2d;
+}
+
+.ps-select-option:disabled {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+
+.ps-field:is(select) option,
+.ps-panel-body select:not(.mobile-field) option,
+.ps-modal select option {
+  background-color: var(--color-ps-input);
+  color: var(--color-ps-text);
+}
+
+.ps-field:is(select) option:checked,
+.ps-panel-body select:not(.mobile-field) option:checked,
+.ps-modal select option:checked {
+  background-color: #2d2d2d;
+  color: var(--color-ps-accent);
+}
+
 .ps-field:focus {
   border-color: var(--color-ps-accent);
   outline: none;
@@ -1093,6 +1176,15 @@ body {
     appearance: none;
   }
 
+  select.mobile-field {
+    padding-right: calc(12px + 0.75rem + 12px);
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
+    background-repeat: no-repeat;
+    background-position: right 12px center;
+    background-size: 0.75rem;
+    cursor: pointer;
+  }
+
   .mobile-field:focus {
     outline: none;
     border-color: #818cf8;

src/utils.ts

@@ -22,6 +22,11 @@ const VARIABLE_MAPPING_KEY = 'label_var_column_mapping_v2';
 /** 变量映射：使用模板中配置的默认值（非数据列） */
 export const VARIABLE_MAPPING_USE_DEFAULT = '__use_default__';
 
+/** 变量映射：使用当前数据行序号（1-based，与 {#INDEX} 一致） */
+export const VARIABLE_MAPPING_USE_ROW_INDEX = '__use_row_index__';
+
+export const VARIABLE_MAPPING_ROW_INDEX_LABEL = '数据序号';
+
 export function toDataSourceMeta(data: ImportData): DataSourceMeta {
   return {
     fileName: data.fileName,
@@ -111,19 +116,25 @@ export function isVariableMappingConfigured(
   const mapped = mapping[varName];
   if (!mapped) return false;
   if (mapped === VARIABLE_MAPPING_USE_DEFAULT) return true;
+  if (mapped === VARIABLE_MAPPING_USE_ROW_INDEX) return true;
   return columns.includes(mapped);
 }
 
-/** 按映射将数据行中的列值填入模板变量键；「使用默认值」时写入 variableDefaults */
+/** 按映射将数据行中的列值填入模板变量键；「使用默认值」/「数据序号」时写入对应值 */
 export function applyRowVariableMapping(
   row: RecordRow,
   mapping: Record<string, string>,
   variables: string[],
-  variableDefaults?: Record<string, string> | null
+  variableDefaults?: Record<string, string> | null,
+  rowIndex: number = 0
 ): RecordRow {
   const result = { ...row };
   for (const varName of variables) {
     const mapped = mapping[varName];
+    if (mapped === VARIABLE_MAPPING_USE_ROW_INDEX) {
+      result[varName] = String(rowIndex + 1);
+      continue;
+    }
     if (mapped === VARIABLE_MAPPING_USE_DEFAULT) {
       const def = variableDefaults?.[varName];
       if (def !== undefined && String(def).trim() !== '') {