diff --git a/web/app/dashboard/ai-workflows/_components/flowgram-editor-provider.tsx b/web/app/dashboard/ai-workflows/_components/flowgram-editor-provider.tsx
index e0d3403..eb467d9 100644
--- a/web/app/dashboard/ai-workflows/_components/flowgram-editor-provider.tsx
+++ b/web/app/dashboard/ai-workflows/_components/flowgram-editor-provider.tsx
@@ -86,31 +86,8 @@ export function useFlowgramEditorProps({
         plugins: () => [
           createMinimapPlugin({
             disableLayer: true,
-            canvasStyle: {
-              canvasWidth: 150,
-              canvasHeight: 84,
-              canvasPadding: 48,
-              canvasBackground: "rgba(245, 245, 245, 1)",
-              canvasBorderRadius: 8,
-              viewportBackground: "rgba(235, 235, 235, 1)",
-              viewportBorderRadius: 4,
-              viewportBorderColor: "rgba(201, 201, 201, 1)",
-              viewportBorderWidth: 1,
-              viewportBorderDashLength: 2,
-              nodeColor: "rgba(255, 255, 255, 1)",
-              nodeBorderRadius: 2,
-              nodeBorderWidth: 0.145,
-              nodeBorderColor: "rgba(6, 7, 9, 0.10)",
-              overlayColor: "rgba(255, 255, 255, 0)",
-            },
-          }),
-          createFreeSnapPlugin({
-            edgeColor: "#00B2B2",
-            alignColor: "#00B2B2",
-            edgeLineWidth: 1,
-            alignLineWidth: 1,
-            alignCrossWidth: 8,
           }),
+          createFreeSnapPlugin({}),
         ],
       }
     },
diff --git a/web/app/dashboard/ai-workflows/_components/flowgram-node-registries.tsx b/web/app/dashboard/ai-workflows/_components/flowgram-node-registries.tsx
index 5d09724..3d704bf 100644
--- a/web/app/dashboard/ai-workflows/_components/flowgram-node-registries.tsx
+++ b/web/app/dashboard/ai-workflows/_components/flowgram-node-registries.tsx
@@ -70,12 +70,12 @@ function FlowgramNodeForm({
     <div className="flex w-full flex-col">
       <Field<string> name="title">
         {({ field }) => (
-          <div className="border-b px-4 py-3 text-sm font-medium leading-5">
+          <div className="border-b px-3 py-2.5 text-sm font-medium leading-5">
             {field.value || fallbackTitle}
           </div>
         )}
       </Field>
-      <div className="px-4 py-3 text-xs text-muted-foreground">{nodeType}</div>
+      <div className="px-3 py-2 text-xs text-muted-foreground">{nodeType}</div>
     </div>
   )
 }
@@ -106,7 +106,7 @@ function ConditionNodeForm({
     <div className="flex w-full flex-col">
       <Field<string> name="title">
         {({ field }) => (
-          <div className="border-b px-4 py-3 text-sm font-medium leading-5">
+          <div className="border-b px-3 py-2.5 text-sm font-medium leading-5">
             {field.value || fallbackTitle}
           </div>
         )}
@@ -129,16 +129,16 @@ function ConditionNodeForm({
           }
 
           return (
-            <div className="px-4 py-3">
+            <div className="px-3 py-2.5">
               <div className="space-y-2">
                 {branches.map((branch, index) => (
                   <div
                     key={branch.id}
                     className={[
-                      "relative flex min-h-10 cursor-pointer items-center gap-2 rounded-md px-3 text-xs transition-colors before:absolute before:bottom-2 before:left-0 before:top-2 before:w-0.5 before:rounded-full before:bg-[#4e40e5]",
+                      "relative flex min-h-9 cursor-pointer items-center gap-2 rounded-sm border px-2.5 text-xs transition-colors",
                       selectedBranch?.nodeId === nodeId && selectedBranch.branchId === branch.id
-                        ? "bg-[#dfe4ff] text-[#3327b9] ring-1 ring-inset ring-[#4e40e5]/45 before:w-1"
-                        : "bg-[#eef1f7] hover:bg-[#e6eaff]",
+                        ? "border-[var(--g-selection-background)] bg-muted"
+                        : "border-transparent bg-muted/60 hover:bg-muted",
                     ].join(" ")}
                     onPointerDownCapture={(event) => {
                       event.stopPropagation()
@@ -154,7 +154,7 @@ function ConditionNodeForm({
                     <span className="min-w-0 flex-1 truncate font-medium text-foreground/90">
                       {branch.name || (branch.default ? "默认分支" : branch.id)}
                     </span>
-                    <span className="shrink-0 rounded-sm bg-[#e7e9f3] px-1.5 py-0.5 text-[10px] font-medium text-muted-foreground">
+                    <span className="shrink-0 rounded-sm border bg-background px-1.5 py-0.5 text-[10px] font-medium text-muted-foreground">
                       {branch.default ? "else" : index === 0 ? "if" : "elseif"}
                     </span>
                     {branch.default ? null : (
diff --git a/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx b/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
index e5d6939..ea67ff7 100644
--- a/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
+++ b/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
@@ -25,13 +25,13 @@ export function FlowgramNodeRenderer(props: WorkflowNodeProps) {
     <WorkflowNodeRenderer
       node={props.node}
       className={cn(
-        "w-[360px] overflow-visible rounded-lg border bg-background shadow-[0_2px_6px_rgba(0,0,0,0.04),0_4px_12px_rgba(0,0,0,0.02)] transition-colors",
-        selected ? "border-[#4e40e5]" : "border-[rgba(6,7,9,0.15)]"
+        "w-[320px] overflow-visible rounded-md border bg-background shadow-sm transition-colors",
+        selected ? "border-[var(--g-selection-background)]" : "border-border"
       )}
       style={{ padding: 0 }}
-      portPrimaryColor="#4e40e5"
-      portSecondaryColor="#d0d5dd"
-      portBackgroundColor="#fff"
+      portPrimaryColor="var(--g-selection-background)"
+      portSecondaryColor="#c9cdd4"
+      portBackgroundColor="hsl(var(--background))"
     >
       {form?.render()}
     </WorkflowNodeRenderer>
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-config-sidebar.tsx b/web/app/dashboard/ai-workflows/_components/workflow-config-sidebar.tsx
index beec1d4..1616058 100644
--- a/web/app/dashboard/ai-workflows/_components/workflow-config-sidebar.tsx
+++ b/web/app/dashboard/ai-workflows/_components/workflow-config-sidebar.tsx
@@ -61,7 +61,7 @@ export function WorkflowConfigPanel({
 
   return (
     <div className="pointer-events-none absolute inset-y-3 right-3 z-50 flex w-[360px] max-w-[calc(100%-1.5rem)]">
-      <section className="pointer-events-auto flex min-h-0 w-full flex-col overflow-hidden rounded-lg border bg-background shadow-2xl">
+      <section className="pointer-events-auto flex min-h-0 w-full flex-col overflow-hidden rounded-md border bg-background/95 shadow-sm backdrop-blur">
         <div className="flex shrink-0 items-start justify-between gap-3 border-b px-4 py-3">
           <div className="min-w-0">
             <div className="text-sm font-medium">{selectedBranchItem ? "条件属性" : "属性"}</div>
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-editor-toolbar.tsx b/web/app/dashboard/ai-workflows/_components/workflow-editor-toolbar.tsx
index 117c5ac..fdb70d4 100644
--- a/web/app/dashboard/ai-workflows/_components/workflow-editor-toolbar.tsx
+++ b/web/app/dashboard/ai-workflows/_components/workflow-editor-toolbar.tsx
@@ -69,12 +69,12 @@ export function WorkflowEditorToolbar({
   publishDisabled?: boolean
 }) {
   return (
-    <div className="relative z-50 flex h-10 shrink-0 items-center justify-between border-b bg-background px-2">
-      <div className="flex min-w-0 items-center gap-2">
+    <div className="flex min-h-10 max-w-full items-center justify-between gap-3 rounded-md border bg-background/95 px-2 py-1 shadow-sm backdrop-blur">
+      <div className="flex min-w-0 shrink items-center gap-2">
         <span
           className={cn(
             "inline-flex items-center gap-1 rounded-sm px-2 py-1 text-xs",
-            validation.valid ? "bg-emerald-50 text-emerald-700" : "bg-amber-50 text-amber-700"
+            validation.valid ? "bg-muted text-muted-foreground" : "bg-amber-50 text-amber-700"
           )}
         >
           <CheckCircle2Icon className="size-3" />
@@ -84,9 +84,9 @@ export function WorkflowEditorToolbar({
           {nodeCount} 个节点 / {edgeCount} 条连线
         </span>
       </div>
-      <div className="flex items-center gap-1">
+      <div className="flex min-w-0 items-center gap-1 overflow-x-auto">
         {toolbarExtra}
-        <div className="flex h-7 items-center rounded-lg border bg-muted/30 p-0.5">
+        <div className="flex h-7 shrink-0 items-center rounded-md border bg-muted/30 p-0.5">
           <WorkflowToolbarIconButton label="缩小" onClick={onZoomOut}>
             <MinusIcon className="size-3.5" />
           </WorkflowToolbarIconButton>
@@ -115,29 +115,29 @@ export function WorkflowEditorToolbar({
             <Maximize2Icon className="size-3.5" />
           </WorkflowToolbarIconButton>
         </div>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={undoDisabled} onClick={onUndo}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={undoDisabled} onClick={onUndo}>
           <Undo2Icon className="size-3.5" />
           撤销
         </Button>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={redoDisabled} onClick={onRedo}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={redoDisabled} onClick={onRedo}>
           重做
         </Button>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={autoLayoutDisabled} onClick={onAutoLayout}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={autoLayoutDisabled} onClick={onAutoLayout}>
           <SparklesIcon className="size-3.5" />
           自动布局
         </Button>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={restoreDefaultDisabled} onClick={onRestoreDefault}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={restoreDefaultDisabled} onClick={onRestoreDefault}>
           <RotateCcwIcon className="size-3.5" />
           恢复默认
         </Button>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={validateDisabled} onClick={onValidate}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={validateDisabled} onClick={onValidate}>
           检查
         </Button>
-        <Button type="button" variant="ghost" size="sm" className="h-7 px-2 text-xs" disabled={saveDraftDisabled} onClick={onSaveDraft}>
+        <Button type="button" variant="ghost" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={saveDraftDisabled} onClick={onSaveDraft}>
           <SaveIcon className="size-3.5" />
           保存
         </Button>
-        <Button type="button" size="sm" className="h-7 px-2 text-xs" disabled={publishDisabled} onClick={onPublish}>
+        <Button type="button" size="sm" className="h-7 shrink-0 px-2 text-xs" disabled={publishDisabled} onClick={onPublish}>
           <SendIcon className="size-3.5" />
           发布
         </Button>
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx b/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
index 61cb74f..d6e324f 100644
--- a/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
+++ b/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
@@ -15,6 +15,7 @@ import {
 } from "@flowgram.ai/free-layout-editor"
 
 import type { AIWorkflowDefinition, AIWorkflowNodeSpec } from "@/lib/api/admin"
+import { cn } from "@/lib/utils"
 
 import { useFlowgramEditorProps } from "./flowgram-editor-provider"
 import {
@@ -264,11 +265,16 @@ function WorkflowEditorInner({
   return (
     <div
       data-workflow-editor-root
-      className="relative isolate flex h-full min-h-0 w-full flex-1 overflow-hidden border bg-background"
+      className="relative isolate h-full min-h-0 w-full flex-1 overflow-hidden border bg-[var(--g-editor-background)]"
     >
       <WorkflowNodePalette nodeSpecs={nodeSpecs} onAddNode={addNode} />
 
-      <div className="flex min-h-0 min-w-0 flex-1 flex-col">
+      <div
+        className={cn(
+          "absolute left-[17.5rem] top-3 z-50 max-w-[calc(100%-18.25rem)]",
+          selectedNodeId ? "right-[23.25rem]" : "right-3"
+        )}
+      >
         <WorkflowEditorToolbar
           validation={validation}
           nodeCount={definition.nodes.length}
@@ -294,11 +300,10 @@ function WorkflowEditorInner({
           onPublish={onPublish}
           publishDisabled={publishDisabled}
         />
-        <div className="relative min-h-0 flex-1 overflow-hidden">
-          <EditorRenderer className="h-full w-full" />
-        </div>
       </div>
 
+      <EditorRenderer className="h-full w-full" />
+
       <WorkflowConfigPanel
         definition={definition}
         nodeSpecs={nodeSpecs}
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx b/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx
index 869b098..8c15a4b 100644
--- a/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx
+++ b/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx
@@ -12,17 +12,17 @@ export function WorkflowNodePalette({
   onAddNode: (spec: AIWorkflowNodeSpec) => void
 }) {
   return (
-    <aside className="relative z-50 flex w-60 shrink-0 flex-col border-r bg-muted/20">
+    <aside className="absolute left-3 top-3 z-50 flex max-h-[calc(100%-1.5rem)] w-64 shrink-0 flex-col overflow-hidden rounded-md border bg-background/95 shadow-sm backdrop-blur">
       <div className="border-b px-3 py-2">
-        <div className="text-sm font-medium">节点</div>
+        <div className="text-xs font-medium text-muted-foreground">节点</div>
       </div>
-      <div className="min-h-0 flex-1 overflow-y-auto p-2">
+      <div className="min-h-0 flex-1 overflow-y-auto p-1.5">
         <div className="space-y-1">
           {nodeSpecs.map((spec) => (
             <button
               key={spec.type}
               type="button"
-              className="flex w-full items-start gap-2 rounded-md border bg-background px-2 py-2 text-left text-sm hover:bg-muted"
+              className="flex w-full items-start gap-2 rounded-sm px-2 py-2 text-left text-sm hover:bg-muted"
               onClick={() => onAddNode(spec)}
             >
               <PlusIcon className="mt-0.5 size-3.5 shrink-0 text-muted-foreground" />