feat(export): split defaults modal layout

src/components/Export/ExportDefaultsSettingsForm.scss

@@ -227,4 +227,72 @@
       transition: transform 0.2s ease;
     }
   }
+
+  &.layout-split {
+    .form-group {
+      display: grid;
+      grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
+      gap: 18px;
+      align-items: center;
+      padding: 14px 0;
+      margin-bottom: 0;
+      border-bottom: 1px solid color-mix(in srgb, var(--border-color) 70%, transparent);
+    }
+
+    .form-group:last-child {
+      border-bottom: none;
+      padding-bottom: 0;
+    }
+
+    .form-group:first-child {
+      padding-top: 0;
+    }
+
+    .form-copy {
+      min-width: 0;
+    }
+
+    .form-control {
+      min-width: 0;
+      display: flex;
+      justify-content: flex-end;
+    }
+
+    .form-hint {
+      margin-bottom: 0;
+      line-height: 1.5;
+    }
+
+    .select-field,
+    .settings-time-range-field {
+      width: 100%;
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+
+    .log-toggle-line {
+      width: 100%;
+      max-width: 360px;
+      margin-bottom: 0;
+    }
+  }
+}
+
+@media (max-width: 760px) {
+  .export-defaults-settings-form.layout-split {
+    .form-group {
+      grid-template-columns: 1fr;
+      gap: 10px;
+    }
+
+    .form-control {
+      justify-content: flex-start;
+    }
+
+    .select-field,
+    .settings-time-range-field,
+    .log-toggle-line {
+      max-width: none;
+    }
+  }
 }

src/components/Export/ExportDefaultsSettingsForm.tsx

@@ -23,6 +23,7 @@ export interface ExportDefaultsSettingsPatch {
 interface ExportDefaultsSettingsFormProps {
   onNotify?: (text: string, success: boolean) => void
   onDefaultsChanged?: (patch: ExportDefaultsSettingsPatch) => void
+  layout?: 'stacked' | 'split'
 }
 
 const exportFormatOptions = [
@@ -50,7 +51,8 @@ const getOptionLabel = (options: ReadonlyArray<{ value: string; label: string }>
 
 export function ExportDefaultsSettingsForm({
   onNotify,
-  onDefaultsChanged
+  onDefaultsChanged,
+  layout = 'stacked'
 }: ExportDefaultsSettingsFormProps) {
   const [showExportFormatSelect, setShowExportFormatSelect] = useState(false)
   const [showExportExcelColumnsSelect, setShowExportExcelColumnsSelect] = useState(false)
@@ -123,65 +125,73 @@ export function ExportDefaultsSettingsForm({
   }
 
   return (
-    <div className="export-defaults-settings-form">
+    <div className={`export-defaults-settings-form ${layout === 'split' ? 'layout-split' : 'layout-stacked'}`}>
       <div className="form-group">
-        <label>默认导出格式</label>
+        <div className="form-copy">
-        <span className="form-hint">导出页面默认选中的格式</span>
+          <label>默认导出格式</label>
-        <div className="select-field" ref={exportFormatDropdownRef}>
+          <span className="form-hint">导出页面默认选中的格式</span>
-          <button
+        </div>
-            type="button"
+        <div className="form-control">
-            className={`select-trigger ${showExportFormatSelect ? 'open' : ''}`}
+          <div className="select-field" ref={exportFormatDropdownRef}>
-            onClick={() => {
+            <button
-              setShowExportFormatSelect(!showExportFormatSelect)
+              type="button"
-              setIsExportDateRangeDialogOpen(false)
+              className={`select-trigger ${showExportFormatSelect ? 'open' : ''}`}
-              setShowExportExcelColumnsSelect(false)
+              onClick={() => {
-              setShowExportConcurrencySelect(false)
+                setShowExportFormatSelect(!showExportFormatSelect)
-            }}
+                setIsExportDateRangeDialogOpen(false)
-          >
+                setShowExportExcelColumnsSelect(false)
-            <span className="select-value">{exportFormatLabel}</span>
+                setShowExportConcurrencySelect(false)
-            <ChevronDown size={16} />
+              }}
-          </button>
+            >
-          {showExportFormatSelect && (
+              <span className="select-value">{exportFormatLabel}</span>
-            <div className="select-dropdown">
+              <ChevronDown size={16} />
-              {exportFormatOptions.map((option) => (
+            </button>
-                <button
+            {showExportFormatSelect && (
-                  key={option.value}
+              <div className="select-dropdown">
-                  type="button"
+                {exportFormatOptions.map((option) => (
-                  className={`select-option ${exportDefaultFormat === option.value ? 'active' : ''}`}
+                  <button
-                  onClick={async () => {
+                    key={option.value}
-                    setExportDefaultFormat(option.value)
+                    type="button"
-                    await configService.setExportDefaultFormat(option.value)
+                    className={`select-option ${exportDefaultFormat === option.value ? 'active' : ''}`}
-                    onDefaultsChanged?.({ format: option.value })
+                    onClick={async () => {
-                    notify('已更新导出格式默认值', true)
+                      setExportDefaultFormat(option.value)
-                    setShowExportFormatSelect(false)
+                      await configService.setExportDefaultFormat(option.value)
-                  }}
+                      onDefaultsChanged?.({ format: option.value })
-                >
+                      notify('已更新导出格式默认值', true)
-                  <span className="option-label">{option.label}</span>
+                      setShowExportFormatSelect(false)
-                  <span className="option-desc">{option.desc}</span>
+                    }}
-                </button>
+                  >
-              ))}
+                    <span className="option-label">{option.label}</span>
-            </div>
+                    <span className="option-desc">{option.desc}</span>
-          )}
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
         </div>
       </div>
 
       <div className="form-group">
-        <label>默认导出时间范围</label>
+        <div className="form-copy">
-        <span className="form-hint">控制导出页面的默认时间选择</span>
+          <label>默认导出时间范围</label>
-        <div className="settings-time-range-field">
+          <span className="form-hint">控制导出页面的默认时间选择</span>
-          <button
+        </div>
-            type="button"
+        <div className="form-control">
-            className={`settings-time-range-trigger ${isExportDateRangeDialogOpen ? 'open' : ''}`}
+          <div className="settings-time-range-field">
-            onClick={() => {
+            <button
-              setShowExportFormatSelect(false)
+              type="button"
-              setShowExportExcelColumnsSelect(false)
+              className={`settings-time-range-trigger ${isExportDateRangeDialogOpen ? 'open' : ''}`}
-              setShowExportConcurrencySelect(false)
+              onClick={() => {
-              setIsExportDateRangeDialogOpen(true)
+                setShowExportFormatSelect(false)
-            }}
+                setShowExportExcelColumnsSelect(false)
-          >
+                setShowExportConcurrencySelect(false)
-            <span className="settings-time-range-value">{exportDateRangeLabel}</span>
+                setIsExportDateRangeDialogOpen(true)
-            <span className="settings-time-range-arrow">&gt;</span>
+              }}
-          </button>
+            >
+              <span className="settings-time-range-value">{exportDateRangeLabel}</span>
+              <span className="settings-time-range-arrow">&gt;</span>
+            </button>
+          </div>
         </div>
       </div>
 
@@ -199,132 +209,148 @@ export function ExportDefaultsSettingsForm({
       />
 
       <div className="form-group">
-        <label>默认导出媒体文件</label>
+        <div className="form-copy">
-        <span className="form-hint">控制图片/语音/表情的默认导出开关</span>
+          <label>默认导出媒体文件</label>
-        <div className="log-toggle-line">
+          <span className="form-hint">控制图片/语音/表情的默认导出开关</span>
-          <span className="log-status">{exportDefaultMedia ? '已开启' : '已关闭'}</span>
+        </div>
-          <label className="switch" htmlFor="shared-export-default-media">
+        <div className="form-control">
-            <input
+          <div className="log-toggle-line">
-              id="shared-export-default-media"
+            <span className="log-status">{exportDefaultMedia ? '已开启' : '已关闭'}</span>
-              className="switch-input"
+            <label className="switch" htmlFor="shared-export-default-media">
-              type="checkbox"
+              <input
-              checked={exportDefaultMedia}
+                id="shared-export-default-media"
-              onChange={async (e) => {
+                className="switch-input"
-                const enabled = e.target.checked
+                type="checkbox"
-                setExportDefaultMedia(enabled)
+                checked={exportDefaultMedia}
-                await configService.setExportDefaultMedia(enabled)
+                onChange={async (e) => {
-                onDefaultsChanged?.({ media: enabled })
+                  const enabled = e.target.checked
-                notify(enabled ? '已开启默认媒体导出' : '已关闭默认媒体导出', true)
+                  setExportDefaultMedia(enabled)
+                  await configService.setExportDefaultMedia(enabled)
+                  onDefaultsChanged?.({ media: enabled })
+                  notify(enabled ? '已开启默认媒体导出' : '已关闭默认媒体导出', true)
+                }}
+              />
+              <span className="switch-slider" />
+            </label>
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>默认语音转文字</label>
+          <span className="form-hint">导出时默认将语音转写为文字</span>
+        </div>
+        <div className="form-control">
+          <div className="log-toggle-line">
+            <span className="log-status">{exportDefaultVoiceAsText ? '已开启' : '已关闭'}</span>
+            <label className="switch" htmlFor="shared-export-default-voice-as-text">
+              <input
+                id="shared-export-default-voice-as-text"
+                className="switch-input"
+                type="checkbox"
+                checked={exportDefaultVoiceAsText}
+                onChange={async (e) => {
+                  const enabled = e.target.checked
+                  setExportDefaultVoiceAsText(enabled)
+                  await configService.setExportDefaultVoiceAsText(enabled)
+                  onDefaultsChanged?.({ voiceAsText: enabled })
+                  notify(enabled ? '已开启默认语音转文字' : '已关闭默认语音转文字', true)
+                }}
+              />
+              <span className="switch-slider" />
+            </label>
+          </div>
+        </div>
+      </div>
+
+      <div className="form-group">
+        <div className="form-copy">
+          <label>Excel 列显示</label>
+          <span className="form-hint">控制 Excel 导出的列字段</span>
+        </div>
+        <div className="form-control">
+          <div className="select-field" ref={exportExcelColumnsDropdownRef}>
+            <button
+              type="button"
+              className={`select-trigger ${showExportExcelColumnsSelect ? 'open' : ''}`}
+              onClick={() => {
+                setShowExportExcelColumnsSelect(!showExportExcelColumnsSelect)
+                setShowExportFormatSelect(false)
+                setIsExportDateRangeDialogOpen(false)
+                setShowExportConcurrencySelect(false)
               }}
-            />
+            >
-            <span className="switch-slider" />
+              <span className="select-value">{exportExcelColumnsLabel}</span>
-          </label>
+              <ChevronDown size={16} />
+            </button>
+            {showExportExcelColumnsSelect && (
+              <div className="select-dropdown">
+                {exportExcelColumnOptions.map((option) => (
+                  <button
+                    key={option.value}
+                    type="button"
+                    className={`select-option ${exportExcelColumnsValue === option.value ? 'active' : ''}`}
+                    onClick={async () => {
+                      const compact = option.value === 'compact'
+                      setExportDefaultExcelCompactColumns(compact)
+                      await configService.setExportDefaultExcelCompactColumns(compact)
+                      onDefaultsChanged?.({ excelCompactColumns: compact })
+                      notify(compact ? '已启用精简列' : '已启用完整列', true)
+                      setShowExportExcelColumnsSelect(false)
+                    }}
+                  >
+                    <span className="option-label">{option.label}</span>
+                    <span className="option-desc">{option.desc}</span>
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
         </div>
       </div>
 
       <div className="form-group">
-        <label>默认语音转文字</label>
+        <div className="form-copy">
-        <span className="form-hint">导出时默认将语音转写为文字</span>
+          <label>导出并发数</label>
-        <div className="log-toggle-line">
+          <span className="form-hint">导出多个会话时的最大并发（1~6）</span>
-          <span className="log-status">{exportDefaultVoiceAsText ? '已开启' : '已关闭'}</span>
+        </div>
-          <label className="switch" htmlFor="shared-export-default-voice-as-text">
+        <div className="form-control">
-            <input
+          <div className="select-field" ref={exportConcurrencyDropdownRef}>
-              id="shared-export-default-voice-as-text"
+            <button
-              className="switch-input"
+              type="button"
-              type="checkbox"
+              className={`select-trigger ${showExportConcurrencySelect ? 'open' : ''}`}
-              checked={exportDefaultVoiceAsText}
+              onClick={() => {
-              onChange={async (e) => {
+                setShowExportConcurrencySelect(!showExportConcurrencySelect)
-                const enabled = e.target.checked
+                setShowExportFormatSelect(false)
-                setExportDefaultVoiceAsText(enabled)
+                setIsExportDateRangeDialogOpen(false)
-                await configService.setExportDefaultVoiceAsText(enabled)
+                setShowExportExcelColumnsSelect(false)
-                onDefaultsChanged?.({ voiceAsText: enabled })
-                notify(enabled ? '已开启默认语音转文字' : '已关闭默认语音转文字', true)
               }}
-            />
+            >
-            <span className="switch-slider" />
+              <span className="select-value">{exportConcurrencyLabel}</span>
-          </label>
+              <ChevronDown size={16} />
-        </div>
+            </button>
-      </div>
+            {showExportConcurrencySelect && (
-
+              <div className="select-dropdown">
-      <div className="form-group">
+                {exportConcurrencyOptions.map((option) => (
-        <label>Excel 列显示</label>
+                  <button
-        <span className="form-hint">控制 Excel 导出的列字段</span>
+                    key={option}
-        <div className="select-field" ref={exportExcelColumnsDropdownRef}>
+                    type="button"
-          <button
+                    className={`select-option ${exportDefaultConcurrency === option ? 'active' : ''}`}
-            type="button"
+                    onClick={async () => {
-            className={`select-trigger ${showExportExcelColumnsSelect ? 'open' : ''}`}
+                      setExportDefaultConcurrency(option)
-            onClick={() => {
+                      await configService.setExportDefaultConcurrency(option)
-              setShowExportExcelColumnsSelect(!showExportExcelColumnsSelect)
+                      onDefaultsChanged?.({ concurrency: option })
-              setShowExportFormatSelect(false)
+                      notify(`已将导出并发数设为 ${option}`, true)
-              setIsExportDateRangeDialogOpen(false)
+                      setShowExportConcurrencySelect(false)
-              setShowExportConcurrencySelect(false)
+                    }}
-            }}
+                  >
-          >
+                    <span className="option-label">{option}</span>
-            <span className="select-value">{exportExcelColumnsLabel}</span>
+                  </button>
-            <ChevronDown size={16} />
+                ))}
-          </button>
+              </div>
-          {showExportExcelColumnsSelect && (
+            )}
-            <div className="select-dropdown">
+          </div>
-              {exportExcelColumnOptions.map((option) => (
-                <button
-                  key={option.value}
-                  type="button"
-                  className={`select-option ${exportExcelColumnsValue === option.value ? 'active' : ''}`}
-                  onClick={async () => {
-                    const compact = option.value === 'compact'
-                    setExportDefaultExcelCompactColumns(compact)
-                    await configService.setExportDefaultExcelCompactColumns(compact)
-                    onDefaultsChanged?.({ excelCompactColumns: compact })
-                    notify(compact ? '已启用精简列' : '已启用完整列', true)
-                    setShowExportExcelColumnsSelect(false)
-                  }}
-                >
-                  <span className="option-label">{option.label}</span>
-                  <span className="option-desc">{option.desc}</span>
-                </button>
-              ))}
-            </div>
-          )}
-        </div>
-      </div>
-
-      <div className="form-group">
-        <label>导出并发数</label>
-        <span className="form-hint">导出多个会话时的最大并发（1~6）</span>
-        <div className="select-field" ref={exportConcurrencyDropdownRef}>
-          <button
-            type="button"
-            className={`select-trigger ${showExportConcurrencySelect ? 'open' : ''}`}
-            onClick={() => {
-              setShowExportConcurrencySelect(!showExportConcurrencySelect)
-              setShowExportFormatSelect(false)
-              setIsExportDateRangeDialogOpen(false)
-              setShowExportExcelColumnsSelect(false)
-            }}
-          >
-            <span className="select-value">{exportConcurrencyLabel}</span>
-            <ChevronDown size={16} />
-          </button>
-          {showExportConcurrencySelect && (
-            <div className="select-dropdown">
-              {exportConcurrencyOptions.map((option) => (
-                <button
-                  key={option}
-                  type="button"
-                  className={`select-option ${exportDefaultConcurrency === option ? 'active' : ''}`}
-                  onClick={async () => {
-                    setExportDefaultConcurrency(option)
-                    await configService.setExportDefaultConcurrency(option)
-                    onDefaultsChanged?.({ concurrency: option })
-                    notify(`已将导出并发数设为 ${option}`, true)
-                    setShowExportConcurrencySelect(false)
-                  }}
-                >
-                  <span className="option-label">{option}</span>
-                </button>
-              ))}
-            </div>
-          )}
         </div>
       </div>
     </div>

src/pages/ExportPage.tsx

@@ -5294,7 +5294,7 @@ function ExportPage() {
               </button>
             </div>
             <div className="export-defaults-modal-body">
-              <ExportDefaultsSettingsForm onDefaultsChanged={handleExportDefaultsChanged} />
+              <ExportDefaultsSettingsForm layout="split" onDefaultsChanged={handleExportDefaultsChanged} />
             </div>
             <div className="export-defaults-modal-actions">
               <button