diff --git a/app/components/FitText.jsx b/app/components/FitText.jsx
new file mode 100644
index 0000000..a9fdc01
--- /dev/null
+++ b/app/components/FitText.jsx
@@ -0,0 +1,87 @@
+'use client';
+
+import { useLayoutEffect, useRef } from 'react';
+
+/**
+ * 根据容器宽度动态缩小字体，使内容不溢出。
+ * 使用 ResizeObserver 监听容器宽度，内容超出时按比例缩小 fontSize，不低于 minFontSize。
+ *
+ * @param {Object} props
+ * @param {React.ReactNode} props.children - 要显示的文本（会单行、不换行）
+ * @param {number} [props.maxFontSize=14] - 最大字号（px）
+ * @param {number} [props.minFontSize=10] - 最小字号（px），再窄也不低于此值
+ * @param {string} [props.className] - 外层容器 className
+ * @param {Object} [props.style] - 外层容器 style（宽度由父级决定，建议父级有明确宽度）
+ * @param {string} [props.as='span'] - 外层容器标签 'span' | 'div'
+ */
+export default function FitText({
+  children,
+  maxFontSize = 14,
+  minFontSize = 10,
+  className,
+  style = {},
+  as: Tag = 'span',
+}) {
+  const containerRef = useRef(null);
+  const contentRef = useRef(null);
+
+  const adjust = () => {
+    const container = containerRef.current;
+    const content = contentRef.current;
+    if (!container || !content) return;
+
+    const containerWidth = container.clientWidth;
+    if (containerWidth <= 0) return;
+
+    // 先恢复到最大字号再测量，确保在「未缩放」状态下取到真实内容宽度
+    content.style.fontSize = `${maxFontSize}px`;
+
+    const run = () => {
+      const contentWidth = content.scrollWidth;
+      if (contentWidth <= 0) return;
+      let size = maxFontSize;
+      if (contentWidth > containerWidth) {
+        size = (containerWidth / contentWidth) * maxFontSize;
+        size = Math.max(minFontSize, Math.min(maxFontSize, size));
+      }
+      content.style.fontSize = `${size}px`;
+    };
+
+    requestAnimationFrame(run);
+  };
+
+  useLayoutEffect(() => {
+    const container = containerRef.current;
+    if (!container) return;
+
+    adjust();
+    const ro = new ResizeObserver(adjust);
+    ro.observe(container);
+    return () => ro.disconnect();
+  }, [children, maxFontSize, minFontSize]);
+
+  return (
+    <Tag
+      ref={containerRef}
+      className={className}
+      style={{
+        display: 'block',
+        width: '100%',
+        overflow: 'hidden',
+        ...style,
+      }}
+    >
+      <span
+        ref={contentRef}
+        style={{
+          display: 'inline-block',
+          whiteSpace: 'nowrap',
+          fontWeight: 'inherit',
+          fontSize: `${maxFontSize}px`,
+        }}
+      >
+        {children}
+      </span>
+    </Tag>
+  );
+}
diff --git a/app/components/MobileFundTable.jsx b/app/components/MobileFundTable.jsx
index 24faffb..4f08002 100644
--- a/app/components/MobileFundTable.jsx
+++ b/app/components/MobileFundTable.jsx
@@ -22,6 +22,7 @@ import {
   useSortable,
 } from '@dnd-kit/sortable';
 import { CSS } from '@dnd-kit/utilities';
+import FitText from './FitText';
 import MobileSettingModal from './MobileSettingModal';
 import { ExitIcon, SettingsIcon, StarIcon } from './Icons';
 
@@ -100,6 +101,7 @@ export default function MobileFundTable({
   refreshing = false,
   sortBy = 'default',
   onReorder,
+  onCustomSettingsChange,
 }) {
   const sensors = useSensors(
     useSensor(PointerSensor, {
@@ -164,6 +166,7 @@ export default function MobileFundTable({
           ? { ...parsed, mobileTableColumnOrder: nextOrder }
           : { mobileTableColumnOrder: nextOrder };
       window.localStorage.setItem('customSettings', JSON.stringify(nextSettings));
+      onCustomSettingsChange?.();
     } catch {}
   };
   const getStoredMobileColumnVisibility = () => {
@@ -194,6 +197,7 @@ export default function MobileFundTable({
           ? { ...parsed, mobileTableColumnVisibility: nextVisibility }
           : { mobileTableColumnVisibility: nextVisibility };
       window.localStorage.setItem('customSettings', JSON.stringify(nextSettings));
+      onCustomSettingsChange?.();
     } catch {}
   };
 
@@ -352,7 +356,7 @@ export default function MobileFundTable({
           </div>
         ),
         cell: (info) => <MobileFundNameCell info={info} />,
-        meta: { align: 'left', cellClassName: 'name-cell' },
+        meta: { align: 'left', cellClassName: 'name-cell', width: 140 },
       },
       {
         accessorKey: 'yesterdayChangePercent',
@@ -367,11 +371,11 @@ export default function MobileFundTable({
               <span className={cls} style={{ fontWeight: 700 }}>
                 {info.getValue() ?? '—'}
               </span>
-              <span className="muted" style={{ fontSize: '11px' }}>{date}</span>
+              <span className="muted" style={{ fontSize: '10px' }}>{date}</span>
             </div>
           );
         },
-        meta: { align: 'right', cellClassName: 'change-cell' },
+        meta: { align: 'right', cellClassName: 'change-cell', width: 72 },
       },
       {
         accessorKey: 'estimateChangePercent',
@@ -387,11 +391,11 @@ export default function MobileFundTable({
               <span className={cls} style={{ fontWeight: 700 }}>
                 {info.getValue() ?? '—'}
               </span>
-              <span className="muted" style={{ fontSize: '11px' }}>{time}</span>
+              <span className="muted" style={{ fontSize: '10px' }}>{time}</span>
             </div>
           );
         },
-        meta: { align: 'right', cellClassName: 'est-change-cell' },
+        meta: { align: 'right', cellClassName: 'est-change-cell', width: 80 },
       },
       {
         accessorKey: 'todayProfit',
@@ -402,12 +406,14 @@ export default function MobileFundTable({
           const hasProfit = value != null;
           const cls = hasProfit ? (value > 0 ? 'up' : value < 0 ? 'down' : '') : 'muted';
           return (
-            <span className={cls} style={{ fontWeight: 700 }}>
-              {hasProfit ? (info.getValue() ?? '') : ''}
+            <span className={cls} style={{ display: 'block', width: '100%', fontWeight: 700 }}>
+              <FitText maxFontSize={14} minFontSize={10}>
+                {hasProfit ? (info.getValue() ?? '') : ''}
+              </FitText>
             </span>
           );
         },
-        meta: { align: 'right', cellClassName: 'profit-cell' },
+        meta: { align: 'right', cellClassName: 'profit-cell', width: 80 },
       },
       {
         accessorKey: 'holdingProfit',
@@ -420,20 +426,22 @@ export default function MobileFundTable({
           return (
             <div
               title="点击切换金额/百分比"
-              style={{ cursor: hasTotal ? 'pointer' : 'default' }}
+              style={{ cursor: hasTotal ? 'pointer' : 'default', width: '100%' }}
               onClick={(e) => {
                 if (!hasTotal) return;
                 e.stopPropagation?.();
                 onHoldingProfitClickRef.current?.(original);
               }}
             >
-              <span className={cls} style={{ fontWeight: 700 }}>
-                {hasTotal ? (info.getValue() ?? '') : ''}
+              <span className={cls} style={{ display: 'block', width: '100%', fontWeight: 700 }}>
+                <FitText maxFontSize={14} minFontSize={10}>
+                  {hasTotal ? (info.getValue() ?? '') : ''}
+                </FitText>
               </span>
             </div>
           );
         },
-        meta: { align: 'right', cellClassName: 'holding-cell' },
+        meta: { align: 'right', cellClassName: 'holding-cell', width: 80 },
       },
     ],
     [currentTab, favorites, refreshing]
@@ -474,6 +482,18 @@ export default function MobileFundTable({
 
   const headerGroup = table.getHeaderGroups()[0];
 
+  const LAST_COLUMN_EXTRA = 12;
+  const mobileGridLayout = (() => {
+    if (!headerGroup?.headers?.length) return { gridTemplateColumns: '', minWidth: undefined };
+    const gap = 12;
+    const widths = headerGroup.headers.map((h) => h.column.columnDef.meta?.width ?? 80);
+    if (widths.length > 0) widths[widths.length - 1] += LAST_COLUMN_EXTRA;
+    return {
+      gridTemplateColumns: widths.map((w) => `${w}px`).join(' '),
+      minWidth: widths.reduce((a, b) => a + b, 0) + (widths.length - 1) * gap,
+    };
+  })();
+
   const getPinClass = (columnId, isHeader) => {
     if (columnId === 'fundName') return isHeader ? 'table-header-cell-pin-left' : 'table-cell-pin-left';
     return '';
@@ -487,17 +507,25 @@ export default function MobileFundTable({
 
   return (
     <div className="mobile-fund-table">
-      <div className="mobile-fund-table-scroll">
+      <div
+        className="mobile-fund-table-scroll"
+        style={mobileGridLayout.minWidth != null ? { minWidth: mobileGridLayout.minWidth } : undefined}
+      >
         {headerGroup && (
-          <div className="table-header-row mobile-fund-table-header">
-            {headerGroup.headers.map((header) => {
+          <div
+            className="table-header-row mobile-fund-table-header"
+            style={mobileGridLayout.gridTemplateColumns ? { gridTemplateColumns: mobileGridLayout.gridTemplateColumns } : undefined}
+          >
+            {headerGroup.headers.map((header, headerIndex) => {
               const columnId = header.column.id;
               const pinClass = getPinClass(columnId, true);
               const alignClass = getAlignClass(columnId);
+              const isLastColumn = headerIndex === headerGroup.headers.length - 1;
               return (
                 <div
                   key={header.id}
                   className={`table-header-cell ${alignClass} ${pinClass}`}
+                  style={isLastColumn ? { paddingRight: LAST_COLUMN_EXTRA } : undefined}
                 >
                   {header.isPlaceholder
                     ? null
@@ -536,18 +564,21 @@ export default function MobileFundTable({
                         background: 'var(--bg)',
                         position: 'relative',
                         zIndex: 1,
+                        ...(mobileGridLayout.gridTemplateColumns ? { gridTemplateColumns: mobileGridLayout.gridTemplateColumns } : {}),
                       }}
                       {...(sortBy === 'default' ? listeners : {})}
                     >
-                      {row.getVisibleCells().map((cell) => {
+                      {row.getVisibleCells().map((cell, cellIndex) => {
                         const columnId = cell.column.id;
                         const pinClass = getPinClass(columnId, false);
                         const alignClass = getAlignClass(columnId);
                         const cellClassName = cell.column.columnDef.meta?.cellClassName || '';
+                        const isLastColumn = cellIndex === row.getVisibleCells().length - 1;
                         return (
                           <div
                             key={cell.id}
                             className={`table-cell ${alignClass} ${cellClassName} ${pinClass}`}
+                            style={isLastColumn ? { paddingRight: LAST_COLUMN_EXTRA } : undefined}
                           >
                             {flexRender(cell.column.columnDef.cell, cell.getContext())}
                           </div>
diff --git a/app/components/PcFundTable.jsx b/app/components/PcFundTable.jsx
index 9ca3008..e571ce0 100644
--- a/app/components/PcFundTable.jsx
+++ b/app/components/PcFundTable.jsx
@@ -126,6 +126,7 @@ export default function PcFundTable({
   refreshing = false,
   sortBy = 'default',
   onReorder,
+  onCustomSettingsChange,
 }) {
   const sensors = useSensors(
     useSensor(PointerSensor, {
@@ -183,6 +184,7 @@ export default function PcFundTable({
           ? { ...parsed, pcTableColumns: nextSizing }
           : { pcTableColumns: nextSizing };
       window.localStorage.setItem('customSettings', JSON.stringify(nextSettings));
+      onCustomSettingsChange?.();
     } catch { }
   };
 
@@ -212,6 +214,7 @@ export default function PcFundTable({
           ? { ...parsed, pcTableColumnOrder: nextOrder }
           : { pcTableColumnOrder: nextOrder };
       window.localStorage.setItem('customSettings', JSON.stringify(nextSettings));
+      onCustomSettingsChange?.();
     } catch { }
   };
 
@@ -246,6 +249,7 @@ export default function PcFundTable({
           ? { ...parsed, pcTableColumnVisibility: nextVisibility }
           : { pcTableColumnVisibility: nextVisibility };
       window.localStorage.setItem('customSettings', JSON.stringify(nextSettings));
+      onCustomSettingsChange?.();
     } catch { }
   };
 
diff --git a/app/globals.css b/app/globals.css
index f392e00..4069e5d 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -1428,24 +1428,27 @@ input[type="number"] {
   }
 
   .mobile-fund-table-scroll {
-    min-width: 520px;
+    /* min-width 由 MobileFundTable 根据 columns meta.width 动态设置 */
   }
 
   .mobile-fund-table .table-header-row {
     display: grid;
-    grid-template-columns: 140px 1fr 1fr 1.2fr 1.2fr;
+    /* grid-template-columns 由 MobileFundTable 根据当前列顺序动态设置 */
     padding-top: 0 !important;
     padding-bottom: 0 !important;
     padding-left: 0 !important;
   }
 
   .mobile-fund-table .table-header-row .table-header-cell {
-    padding-top: 16px;
-    padding-bottom: 16px;
+    padding-top: 8px;
+    padding-bottom: 8px;
+    display: flex;
+    align-items: center;
+    min-width: 0;
+    overflow: hidden;
   }
 
   .mobile-fund-table .table-row {
-    grid-template-columns: 140px 1fr 1fr 1.2fr 1.2fr;
     grid-template-areas: unset;
     gap: 12px;
     padding-top: 0 !important;
@@ -1468,6 +1471,9 @@ input[type="number"] {
   .mobile-fund-table .table-row .table-cell {
     padding-top: 12px;
     padding-bottom: 12px;
+    min-width: 0;
+    overflow: hidden;
+    text-overflow: ellipsis;
   }
 
   /* 基金名称列固定左侧：右侧阴影突出固定列，覆盖行 border-bottom */
diff --git a/app/page.jsx b/app/page.jsx
index a573740..a4e4e0b 100644
--- a/app/page.jsx
+++ b/app/page.jsx
@@ -1502,7 +1502,7 @@ export default function HomePage() {
 
   const storageHelper = useMemo(() => {
     // 仅以下 key 参与云端同步；fundValuationTimeseries 不同步到云端（测试中功能，暂不同步）
-    const keys = new Set(['funds', 'favorites', 'groups', 'collapsedCodes', 'collapsedTrends', 'refreshMs', 'holdings', 'pendingTrades', 'transactions', 'viewMode', 'dcaPlans']);
+    const keys = new Set(['funds', 'favorites', 'groups', 'collapsedCodes', 'collapsedTrends', 'refreshMs', 'holdings', 'pendingTrades', 'transactions', 'viewMode', 'dcaPlans', 'customSettings']);
     const triggerSync = (key, prevValue, nextValue) => {
       if (keys.has(key)) {
         // 标记为脏数据
@@ -1549,7 +1549,7 @@ export default function HomePage() {
 
   useEffect(() => {
     // 仅以下 key 的变更会触发云端同步；fundValuationTimeseries 不在其中
-    const keys = new Set(['funds', 'favorites', 'groups', 'collapsedCodes', 'collapsedTrends', 'refreshMs', 'holdings', 'pendingTrades', 'viewMode', 'dcaPlans']);
+    const keys = new Set(['funds', 'favorites', 'groups', 'collapsedCodes', 'collapsedTrends', 'refreshMs', 'holdings', 'pendingTrades', 'viewMode', 'dcaPlans', 'customSettings']);
     const onStorage = (e) => {
       if (!e.key) return;
       if (e.key === 'localUpdatedAt') {
@@ -1570,6 +1570,18 @@ export default function HomePage() {
     };
   }, [getFundCodesSignature, scheduleSync]);
 
+  const triggerCustomSettingsSync = useCallback(() => {
+    queueMicrotask(() => {
+      dirtyKeysRef.current.add('customSettings');
+      if (!skipSyncRef.current) {
+        const now = nowInTz().toISOString();
+        window.localStorage.setItem('localUpdatedAt', now);
+        setLastSyncTime(now);
+      }
+      scheduleSync();
+    });
+  }, [scheduleSync]);
+
   const applyViewMode = useCallback((mode) => {
     if (mode !== 'card' && mode !== 'list') return;
     setViewMode(mode);
@@ -2561,6 +2573,7 @@ export default function HomePage() {
       const raw = window.localStorage.getItem('customSettings');
       const parsed = raw ? JSON.parse(raw) : {};
       window.localStorage.setItem('customSettings', JSON.stringify({ ...parsed, pcContainerWidth: w }));
+      triggerCustomSettingsSync();
     } catch { }
     setSettingsOpen(false);
   };
@@ -2571,6 +2584,7 @@ export default function HomePage() {
       const raw = window.localStorage.getItem('customSettings');
       const parsed = raw ? JSON.parse(raw) : {};
       window.localStorage.setItem('customSettings', JSON.stringify({ ...parsed, pcContainerWidth: 1200 }));
+      triggerCustomSettingsSync();
     } catch { }
   };
 
@@ -2715,6 +2729,7 @@ export default function HomePage() {
       });
 
     const viewMode = payload.viewMode === 'list' ? 'list' : 'card';
+    const customSettings = isPlainObject(payload.customSettings) ? payload.customSettings : {};
 
     return JSON.stringify({
       funds: uniqueFundCodes,
@@ -2727,7 +2742,8 @@ export default function HomePage() {
       pendingTrades,
       transactions,
       dcaPlans,
-      viewMode
+      viewMode,
+      customSettings
     });
   }
 
@@ -2768,6 +2784,13 @@ export default function HomePage() {
       if (!keys || keys.has('dcaPlans')) {
         all.dcaPlans = JSON.parse(localStorage.getItem('dcaPlans') || '{}');
       }
+      if (!keys || keys.has('customSettings')) {
+        try {
+          all.customSettings = JSON.parse(localStorage.getItem('customSettings') || '{}');
+        } catch {
+          all.customSettings = {};
+        }
+      }
 
       // 如果是全量收集（keys 为 null），进行完整的数据清洗和验证逻辑
       if (!keys) {
@@ -2837,7 +2860,8 @@ export default function HomePage() {
           pendingTrades: all.pendingTrades,
           transactions: all.transactions,
           dcaPlans: cleanedDcaPlans,
-          viewMode: all.viewMode
+          viewMode: all.viewMode,
+          customSettings: isPlainObject(all.customSettings) ? all.customSettings : {}
         };
       }
 
@@ -2858,6 +2882,7 @@ export default function HomePage() {
         transactions: {},
         dcaPlans: {},
         viewMode: 'card',
+        customSettings: {},
         exportedAt: nowInTz().toISOString()
       };
     }
@@ -2919,6 +2944,13 @@ export default function HomePage() {
       setDcaPlans(nextDcaPlans);
       storageHelper.setItem('dcaPlans', JSON.stringify(nextDcaPlans));
 
+      if (isPlainObject(cloudData.customSettings)) {
+        try {
+          const merged = { ...JSON.parse(localStorage.getItem('customSettings') || '{}'), ...cloudData.customSettings };
+          window.localStorage.setItem('customSettings', JSON.stringify(merged));
+        } catch { }
+      }
+
       if (nextFunds.length) {
         const codes = Array.from(new Set(nextFunds.map((f) => f.code)));
         if (codes.length) await refreshAll(codes);
@@ -3947,6 +3979,7 @@ export default function HomePage() {
                                   if (row.holdingProfitValue == null) return;
                                   setPercentModes(prev => ({ ...prev, [row.code]: !prev[row.code] }));
                                 }}
+                                onCustomSettingsChange={triggerCustomSettingsSync}
                               />
                             </div>
                           </div>
@@ -3987,6 +4020,7 @@ export default function HomePage() {
                           if (row.holdingProfitValue == null) return;
                           setPercentModes((prev) => ({ ...prev, [row.code]: !prev[row.code] }));
                         }}
+                        onCustomSettingsChange={triggerCustomSettingsSync}
                       />
                     )}
                     <AnimatePresence mode="popLayout">