diff --git a/web/src/components/RealtimeTable/Cell/Cell/Cell.jsx b/web/src/components/RealtimeTable/Cell/Cell/Cell.jsx
index 5f05400..2164513 100644
--- a/web/src/components/RealtimeTable/Cell/Cell/Cell.jsx
+++ b/web/src/components/RealtimeTable/Cell/Cell/Cell.jsx
@@ -59,13 +59,29 @@ const highlightText = (text, searchQuery) => {
   );
 };
 
+const INTEGER_COLUMN_IDS = new Set([
+  'data.header.num_group',
+  'data.nomenclature_group_id',
+  'data.header.item_id',
+  'data.article_id',
+  'data.code_razdela',
+]);
+
 // Функция для форматирования числа в финансовый формат
-const formatNumber = (value) => {
+const formatNumber = (value, asInteger = false) => {
   if (value === null || value === undefined || value === '') return String(value || '');
 
   const num = Number(value);
   if (isNaN(num)) return String(value);
 
+  if (asInteger) {
+    return num.toLocaleString('ru-RU', {
+      minimumFractionDigits: 0,
+      maximumFractionDigits: 0,
+      useGrouping: true,
+    });
+  }
+
   return num.toLocaleString('ru-RU', {
     minimumFractionDigits: 1,
     maximumFractionDigits: 1,
@@ -84,7 +100,8 @@ const Cell = React.memo(({ cell, row, column, onClick, globalFilter, backgroundC
 
   const isNumeric = !isNaN(Number(cellValue)) && cellValue !== null && cellValue !== undefined && cellValue !== '';
   if (isNumeric) {
-    textValue = formatNumber(cellValue);
+    const asInteger = INTEGER_COLUMN_IDS.has(column.id);
+    textValue = formatNumber(cellValue, asInteger);
   }
 
   const highlightedContent = useMemo(() => {
diff --git a/web/src/components/RealtimeTable/ColumnSelectionOverlay/ColumnSelectionOverlay.jsx b/web/src/components/RealtimeTable/ColumnSelectionOverlay/ColumnSelectionOverlay.jsx
new file mode 100644
index 0000000..5bed9f8
--- /dev/null
+++ b/web/src/components/RealtimeTable/ColumnSelectionOverlay/ColumnSelectionOverlay.jsx
@@ -0,0 +1,148 @@
+import { useEffect, useState } from 'react';
+import { createPortal } from 'react-dom';
+
+const toLocalCoord = (value, scale) => value / scale;
+
+const getPinnedClipLeft = (container, overlayParent, columnPinning, scale) => {
+  const pinnedIds = (columnPinning?.left || []).filter(Boolean);
+  if (!pinnedIds.length) return 0;
+
+  const parentRect = overlayParent.getBoundingClientRect();
+  let maxRight = 0;
+
+  for (const id of pinnedIds) {
+    const el = container.querySelector(`[data-col-select-id="${id}"]`);
+    if (!el) continue;
+    const rect = el.getBoundingClientRect();
+    maxRight = Math.max(maxRight, rect.right - parentRect.left);
+  }
+
+  return toLocalCoord(maxRight, scale);
+};
+
+const getOverlayRect = (container, overlayParent, selectedColumnId, columnPinning, scale) => {
+  const columnEl = container.querySelector(
+    `[data-col-select-id="${selectedColumnId}"]`,
+  );
+  if (!columnEl || !overlayParent) return null;
+
+  const bodyCell = container.querySelector(
+    `td[data-col-id="${selectedColumnId}"]`,
+  );
+
+  const parentRect = overlayParent.getBoundingClientRect();
+  const containerRect = container.getBoundingClientRect();
+  const columnRect = columnEl.getBoundingClientRect();
+  const alignRect = bodyCell?.getBoundingClientRect() ?? columnRect;
+
+  let top = toLocalCoord(columnRect.top - parentRect.top, scale);
+  let left = toLocalCoord(alignRect.left - parentRect.left, scale);
+  let width = toLocalCoord(alignRect.width, scale);
+  const height = toLocalCoord(containerRect.bottom - columnRect.top, scale);
+
+  const pinnedIds = (columnPinning?.left || []).filter(Boolean);
+  const isSelectedPinned = pinnedIds.includes(selectedColumnId);
+
+  if (!isSelectedPinned && pinnedIds.length) {
+    const clipLeft = getPinnedClipLeft(container, overlayParent, columnPinning, scale);
+    const overlayRight = left + width;
+    if (overlayRight <= clipLeft) return null;
+    if (left < clipLeft) {
+      width = overlayRight - clipLeft;
+      left = clipLeft;
+    }
+  }
+
+  if (width <= 0 || height <= 0) return null;
+
+  return { top, left, width, height };
+};
+
+export const ColumnSelectionOverlay = ({
+  selectedColumnId,
+  containerRef,
+  scale = 1,
+  columnSizing,
+  columnPinning,
+  showColumnFilters,
+}) => {
+  const [rect, setRect] = useState(null);
+  const [portalTarget, setPortalTarget] = useState(null);
+
+  useEffect(() => {
+    const container = containerRef.current;
+    if (!container) return;
+
+    const overlayParent = container.parentElement;
+    setPortalTarget(overlayParent);
+  }, [containerRef, selectedColumnId]);
+
+  useEffect(() => {
+    const container = containerRef.current;
+    const overlayParent = container?.parentElement;
+    if (!selectedColumnId || !container || !overlayParent) {
+      setRect(null);
+      return;
+    }
+
+    const updateRect = () => {
+      setRect(getOverlayRect(container, overlayParent, selectedColumnId, columnPinning, scale));
+    };
+
+    updateRect();
+
+    const scrollTargets = new Set([container]);
+    let scrollParent = container.parentElement;
+    for (let i = 0; i < 3 && scrollParent; i += 1) {
+      scrollTargets.add(scrollParent);
+      scrollParent = scrollParent.parentElement;
+    }
+
+    scrollTargets.forEach((target) => {
+      target.addEventListener('scroll', updateRect, { passive: true });
+    });
+    window.addEventListener('resize', updateRect);
+
+    const resizeObserver = new ResizeObserver(updateRect);
+    resizeObserver.observe(container);
+    resizeObserver.observe(overlayParent);
+
+    const header = container.querySelector('.custom-table-header');
+    if (header) {
+      resizeObserver.observe(header);
+    }
+
+    const tableBody = container.querySelector('.MuiTableBody-root');
+    if (tableBody) {
+      resizeObserver.observe(tableBody);
+    }
+
+    return () => {
+      scrollTargets.forEach((target) => {
+        target.removeEventListener('scroll', updateRect);
+      });
+      window.removeEventListener('resize', updateRect);
+      resizeObserver.disconnect();
+    };
+  }, [selectedColumnId, containerRef, scale, columnSizing, columnPinning, showColumnFilters]);
+
+  if (!rect || !portalTarget) return null;
+
+  return createPortal(
+    <div
+      style={{
+        position: 'absolute',
+        top: rect.top,
+        left: rect.left,
+        width: rect.width,
+        height: rect.height,
+        backgroundColor: 'rgba(88, 154, 47, 0.2)',
+        border: '1px solid #589A2F',
+        boxSizing: 'border-box',
+        pointerEvents: 'none',
+        zIndex: 1,
+      }}
+    />,
+    portalTarget,
+  );
+};
diff --git a/web/src/components/RealtimeTable/RealtimeTable.jsx b/web/src/components/RealtimeTable/RealtimeTable.jsx
index 6b37f2a..da518a6 100644
--- a/web/src/components/RealtimeTable/RealtimeTable.jsx
+++ b/web/src/components/RealtimeTable/RealtimeTable.jsx
@@ -11,13 +11,14 @@ import { getTableColumns } from './tableColumns';
 import { Cell, EditCell } from './index';
 import { TableHead } from './TableHead/TableHead';
 import SettingsPanel from './SettingPanel/SettingPanel';
+import { ColumnSelectionOverlay } from './ColumnSelectionOverlay/ColumnSelectionOverlay';
 
 import { useColumnSettings } from './hooks/useColumnSettings';
 import { useTableScale } from './hooks/useTableScale';
 import { useHeaderPortal } from './hooks/useHeaderPortal';
 import {
   BASE_TABLE_CONFIG,
-  getTableHeadCellStyles,
+  getTableBodyCellProps,
   getTablePaperStyles,
   TABLE_ROW_HEIGHT,
 } from './constants/tableConfig';
@@ -29,7 +30,7 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
   const { data, setData, isLoading: isTableLoading, editingCells: dataEditingCells } = useRealtimeData(formId, sheetName, direction);
   const [globalFilter, setGlobalFilter] = useState('');
   const [showColumnFilters, setShowColumnFilters] = useState(false);
-  const [selectedColumn, setSelectedColumn] = useState();
+  const [selectedColumnId, setSelectedColumnId] = useState();
   const [rowSelection, setRowSelection] = useState({});
   const [isLoadingData, setIsLoadingData] = useState(false);
   const [isPending, startTransition] = useTransition();
@@ -102,6 +103,26 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
     }));
   }, [])
 
+  const handleColumnSelect = useCallback((columnId) => {
+    setSelectedColumnId((prev) => {
+      const next = prev === columnId ? undefined : columnId;
+      return next;
+    });
+  }, []);
+
+  useEffect(() => {
+    if (!selectedColumnId) return;
+
+    const handleDocumentClick = (e) => {
+      if (e.target.closest('[data-col-select-id]')) return;
+      if (e.target.closest('[data-pin-panel]')) return;
+
+      setSelectedColumnId(undefined);
+    };
+
+    document.addEventListener('mousedown', handleDocumentClick);
+    return () => document.removeEventListener('mousedown', handleDocumentClick);
+  }, [selectedColumnId]);
 
   const columns = useMemo(() => {
     if (!columnsConfig || !columnsConfig.columns) return [];
@@ -121,11 +142,12 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
       console.error('Error creating columns:', error);
       return [];
     }
-  }, [columnsConfig, handleUpdateCell]);
+  }, [columnsConfig, handleUpdateCell, handleClickRowCell]);
 
   const tableMeta = useMemo(() => ({
     updateCell: handleUpdateCell,
-  }), [handleUpdateCell]);
+    selectedColumnId,
+  }), [handleUpdateCell, selectedColumnId]);
 
   // Конфигурация таблицы
   const tableConfig = useMemo(
@@ -188,7 +210,7 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
       muiTableHeadCellProps: {
         sx: { boxSizing: 'border-box' },
       },
-      muiTableBodyCellProps: getTableHeadCellStyles,
+      muiTableBodyCellProps: getTableBodyCellProps,
       muiTableHeadProps: {
         sx: {
           display: 'table-header-group',
@@ -301,7 +323,8 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
   return (
     <>
       <SettingsPanel
-        selectedColumn={selectedColumn}
+        selectedColumnId={selectedColumnId}
+        columnPinning={columnPinning}
         table={table}
         columns={columns}
         onPinColumn={handlePinColumn}
@@ -333,6 +356,15 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
           >
             <MaterialReactTable table={table} />
 
+            <ColumnSelectionOverlay
+              selectedColumnId={selectedColumnId}
+              containerRef={containerRef}
+              scale={sizeMult}
+              columnSizing={columnSizing}
+              columnPinning={columnPinning}
+              showColumnFilters={showColumnFilters}
+            />
+
             {isTableLoading && (
               <div
                 style={{
@@ -354,8 +386,8 @@ const RealtimeTable = ({ formType, formId, sheetName, direction }) => {
                 <TableHead
                   table={table}
                   style={{ zIndex: (theme) => theme.zIndex.modal - 1 }}
-                  onHeaderSelect={setSelectedColumn}
-                  selectHeader={selectedColumn}
+                  selectedColumnId={selectedColumnId}
+                  onColumnSelect={handleColumnSelect}
                   onChangeWidth={handleSetColumnWidth}
                   isLoadingData={isLoadingData}
                 />,
diff --git a/web/src/components/RealtimeTable/SettingPanel/SettingPanel.jsx b/web/src/components/RealtimeTable/SettingPanel/SettingPanel.jsx
index 6644329..5725c84 100644
--- a/web/src/components/RealtimeTable/SettingPanel/SettingPanel.jsx
+++ b/web/src/components/RealtimeTable/SettingPanel/SettingPanel.jsx
@@ -21,7 +21,8 @@ import { ExportDefaultButton } from '../../common/Buttons/ButtonsActions';
 import { exportSheet } from '../../../utils/exportForm';
 
 const SettingPanel = ({
-  selectedColumn,
+  selectedColumnId,
+  columnPinning,
   table,
   columns,
   onPinColumn,
@@ -44,12 +45,16 @@ const SettingPanel = ({
   const [selectedColumnIds, setSelectedColumnIds] = useState();
   const [showColumnFilters, setShowColumnFilters] = useState(false);
 
+  // TODO: console.log(!!!) везде посомтреть
   useEffect(() => {
-    if (!selectedColumn) return;
-    const pinningColumn = table.getState().columnPinning.left;
-    const isPinned = pinningColumn.includes(selectedColumn.id);
-    setIsPinned(isPinned);
-  }, [selectedColumn, table]);
+    if (!selectedColumnId) {
+      setIsPinned(false);
+      return;
+    }
+    const pinningColumn = columnPinning?.left || table.getState().columnPinning.left || [];
+    const pinned = pinningColumn.includes(selectedColumnId);
+    setIsPinned(pinned);
+  }, [selectedColumnId, columnPinning, table]);
 
   useEffect(() => {
     setSelectedColumnIds(
@@ -79,7 +84,7 @@ const SettingPanel = ({
 
   return (
     <>
-      <Panel>
+      <Panel data-pin-panel>
         <Stack direction="row" sx={{ gap: '1.25rem' }}>
           <GroupByObject title="Отображение">
             {/* <ColorPickerButton onColorApply={addColorForCells} /> */}
@@ -88,11 +93,22 @@ const SettingPanel = ({
               <IconButton
                 variant="outlined"
                 data-active={isPinned}
-                onClick={() =>
+                disabled={!selectedColumnId}
+                onMouseDown={(e) => e.stopPropagation()}
+                onClick={() => {
+                  if (!selectedColumnId) {
+                    console.warn('[ColumnPin] клик Pin: selectedColumnId пустой');
+                    return;
+                  }
+                  console.log('[ColumnPin] клик Pin:', {
+                    selectedColumnId,
+                    isPinned,
+                    action: isPinned ? 'unpin' : 'pin',
+                  });
                   isPinned
-                    ? onUnpinColumn?.(selectedColumn.id)
-                    : onPinColumn?.(selectedColumn.id)
-                }
+                    ? onUnpinColumn?.(selectedColumnId)
+                    : onPinColumn?.(selectedColumnId);
+                }}
               >
                 <Pin />
               </IconButton>
diff --git a/web/src/components/RealtimeTable/TableHead/TableHead.jsx b/web/src/components/RealtimeTable/TableHead/TableHead.jsx
index 7bee2df..9f819d9 100644
--- a/web/src/components/RealtimeTable/TableHead/TableHead.jsx
+++ b/web/src/components/RealtimeTable/TableHead/TableHead.jsx
@@ -2,9 +2,12 @@ import React from 'react';
 import ColumnResizer from './ColumnResizer';
 import { columnPinningDefault } from '../constants/columnConfig';
 
+const getPinnedColumnIds = (table) =>
+  (table.getState().columnPinning.left || []).filter(Boolean);
+
 const getSortedColumns = (table) => {
   const allLeafColumns = table.getAllLeafColumns();
-  const pinnedColumns = table.getState().columnPinning.left || [];
+  const pinnedColumns = getPinnedColumnIds(table);
 
   return [...allLeafColumns].sort((a, b) => {
     const aIsPinned = pinnedColumns.includes(a.id);
@@ -46,7 +49,7 @@ const getPinnedColumnsWidth = (header, pinningColumn) => {
 
 const calculateLeftOffset = (table, columnOrHeader) => {
   const columnId = getColumnId(columnOrHeader);
-  const pinnedColumns = table.getState().columnPinning.left || [];
+  const pinnedColumns = getPinnedColumnIds(table);
   const currentPinnedIndex = pinnedColumns.indexOf(columnId);
 
   let leftOffset = 0;
@@ -64,13 +67,13 @@ const calculateLeftOffset = (table, columnOrHeader) => {
 };
 
 const isColumnPin = (table, header) => {
-  const pinningColumn = table.getState().columnPinning.left;
+  const pinningColumn = getPinnedColumnIds(table);
   const columnId = getColumnId(header);
   const isPinned = pinningColumn.includes(columnId);
   return isPinned;
 };
 
-const ColumnNumbersRow = ({ table }) => {
+const ColumnNumbersRow = ({ table, selectedColumnId, onColumnSelect }) => {
   const sortedColumns = getSortedColumns(table);
   const tableState = table.getState();
   const filteredColumns = sortedColumns.filter(
@@ -95,27 +98,38 @@ const ColumnNumbersRow = ({ table }) => {
           key={`col-number-${column.id}`}
           column={column}
           table={table}
+          selectedColumnId={selectedColumnId}
+          onColumnSelect={onColumnSelect}
         />
       ))}
     </div>
   );
 };
 
-const ColumnNumberCell = ({ column, table }) => {
+const ColumnNumberCell = ({ column, table, selectedColumnId, onColumnSelect }) => {
   const isPinned = isColumnPin(table, column);
   const allLeafColumns = table.getAllLeafColumns();
   const originalIndex = allLeafColumns.findIndex((col) => col.id === column.id);
   const leftOffset = calculateLeftOffset(table, column);
+  const selected = selectedColumnId === column.id;
+
   return (
     <div
       key={`col-number-${column.id}`}
+      data-col-select-id={column.id}
+      onClick={(e) => {
+        e.stopPropagation();
+        onColumnSelect?.(column.id);
+      }}
+      onMouseDown={(e) => e.stopPropagation()}
       style={{
         width: column.getSize(),
         minWidth: column.getSize(),
         maxWidth: column.getSize(),
         padding: '2px 6px',
         textAlign: 'center',
-        backgroundColor: '#e5e5e5',
+        backgroundColor: selected ? '#589A2F' : '#FBFBFB',
+        color: selected ? '#ffffff' : '#5E5E5E',
         boxSizing: 'border-box',
         display: 'flex',
         alignItems: 'center',
@@ -125,7 +139,9 @@ const ColumnNumberCell = ({ column, table }) => {
         borderBottom: 'none',
         position: isPinned ? 'sticky' : 'relative',
         left: isPinned ? leftOffset : 'auto',
-        zIndex: isPinned ? 20 : 'auto',
+        zIndex: selected ? 16 : isPinned ? 20 : 'auto',
+        cursor: 'pointer',
+        userSelect: 'none',
       }}
     >
       {originalIndex}
@@ -133,9 +149,9 @@ const ColumnNumberCell = ({ column, table }) => {
   );
 };
 
-const HeaderCell = ({ header, table, onClick, hightlight, onChangeWidth }) => {
+const HeaderCell = ({ header, table, onClick, onChangeWidth }) => {
   const column = header.column;
-  const pinningColumn = table.getState().columnPinning.left || [];
+  const pinningColumn = getPinnedColumnIds(table);
   const isGroup = header.subHeaders?.length > 0;
   const isPinned = isColumnPin(table, header);
   const leftOffset = calculateLeftOffset(table, header);
@@ -148,7 +164,7 @@ const HeaderCell = ({ header, table, onClick, hightlight, onChangeWidth }) => {
 
   const backgroundColor = customBgColor
     ? customBgColor
-    : (hightlight ? '#cbccce' : 'rgba(243, 244, 246, 1)');
+    : 'rgba(243, 244, 246, 1)';
 
   const handleChangeWidth = (deltaWidth) => {
     const size = header.getSize();
@@ -164,7 +180,7 @@ const HeaderCell = ({ header, table, onClick, hightlight, onChangeWidth }) => {
     }
     // Для незакрепленных колонок текст должен начинаться после всех закрепленных
     // Получаем общую ширину всех закрепленных колонок
-    const pinnedColumns = table.getState().columnPinning.left || [];
+    const pinnedColumns = getPinnedColumnIds(table);
     let totalPinnedWidth = 0;
     for (const pinnedId of pinnedColumns) {
       const pinnedCol = table.getColumn(pinnedId);
@@ -188,6 +204,7 @@ const HeaderCell = ({ header, table, onClick, hightlight, onChangeWidth }) => {
           textAlign: 'center',
           fontWeight: 600,
           fontSize: '12px',
+          lineHeight: 1,
           backgroundColor: backgroundColor,
           color: '#424242',
           boxSizing: 'border-box',
@@ -379,13 +396,15 @@ const FilterCell = ({ column, table }) => {
 
 export const TableHead = ({
   table,
-  onHeaderSelect,
-  selectHeader,
+  selectedColumnId,
+  onColumnSelect,
   onChangeWidth,
   isLoadingData,
 }) => {
   const handleHeaderClick = (header) => {
-    onHeaderSelect(header);
+    if (!header.subHeaders?.length && header.column?.id) {
+      onColumnSelect?.(header.column.id);
+    }
   };
 
   if (!isLoadingData) {
@@ -402,9 +421,15 @@ export const TableHead = ({
         }}
       >
         {/* Строка с номерами колонок */}
-        <ColumnNumbersRow table={table} />
+        <ColumnNumbersRow
+          table={table}
+          selectedColumnId={selectedColumnId}
+          onColumnSelect={onColumnSelect}
+        />
 
-        {table.getState().showColumnFilters && <FilterRow table={table} />}
+        {table.getState().showColumnFilters && (
+          <FilterRow table={table} />
+        )}
 
         {/* Существующие строки заголовков */}
         {table.getHeaderGroups().map((headerGroup) => (
@@ -413,9 +438,6 @@ export const TableHead = ({
               <React.Fragment key={header.id}>
                 <HeaderCell
                   header={header}
-                  hightlight={
-                    selectHeader ? header.id == selectHeader.id : false
-                  }
                   table={table}
                   onClick={handleHeaderClick}
                   onChangeWidth={onChangeWidth}
diff --git a/web/src/components/RealtimeTable/constants/tableConfig.js b/web/src/components/RealtimeTable/constants/tableConfig.js
index 2ac68e7..dae6594 100644
--- a/web/src/components/RealtimeTable/constants/tableConfig.js
+++ b/web/src/components/RealtimeTable/constants/tableConfig.js
@@ -45,6 +45,18 @@ export const getTableHeadCellStyles = () => ({
   },
 });
 
+export const getTableBodyCellProps = ({ column, table }) => {
+  const isPinned = (table.getState().columnPinning?.left || []).includes(column.id);
+
+  return {
+    'data-col-id': column.id,
+    sx: {
+      ...getTableHeadCellStyles().sx,
+      ...(isPinned && { zIndex: 5 }),
+    },
+  };
+};
+
 export const getTablePaperStyles = () => ({
   sx: {
     boxShadow: "none",
diff --git a/web/src/components/RealtimeTable/hooks/useColumnSettings.js b/web/src/components/RealtimeTable/hooks/useColumnSettings.js
index 5f6c869..dafbc9c 100644
--- a/web/src/components/RealtimeTable/hooks/useColumnSettings.js
+++ b/web/src/components/RealtimeTable/hooks/useColumnSettings.js
@@ -41,6 +41,7 @@ export const useColumnSettings = (tableKey) => {
   }, []);
 
   const handleUnpinColumn = useCallback((colId) => {
+    if (!colId) return;
     if (columnPinningDefault.left.includes(colId)) return;
     setColumnPinning((prev) => ({
       ...prev,