diff --git a/web/src/components/canvas/canvas-folder-preview.tsx b/web/src/components/canvas/canvas-folder-preview.tsx
index 681fb9f94..36cf6d6e5 100644
--- a/web/src/components/canvas/canvas-folder-preview.tsx
+++ b/web/src/components/canvas/canvas-folder-preview.tsx
@@ -39,7 +39,7 @@ export const CanvasFolderPreview = React.memo(function CanvasFolderPreview({
     const [editing, setEditing] = useState(false);
     const [title, setTitle] = useState(data.title);
     const previewNodes = useMemo(() => childNodes.filter(canPreviewFolderNode).slice(0, 3), [childNodes]);
-    const primaryNode = previewNodes[0];
+    const themeCover = data.metadata?.folder?.themeCover || DEFAULT_FOLDER_COVER;
     const showAdd = style === "glass" || childNodes.length === 0;
 
     useEffect(() => setTitle(data.title), [data.title]);
@@ -54,20 +54,22 @@ export const CanvasFolderPreview = React.memo(function CanvasFolderPreview({
     return (
         <div className={`canvas-folder-preview canvas-folder-preview-${style}${active ? " is-active" : ""}${isDropTarget ? " is-drop-target" : ""}`}>
             <div className="canvas-folder-back" aria-hidden>
-                <FolderNodeMedia node={primaryNode} fallback />
+                <FolderThemeMedia source={themeCover} />
             </div>
 
+            <div className="canvas-folder-paper-sheet" aria-hidden />
+
             <div className="canvas-folder-preview-stack" aria-hidden>
                 {(previewNodes.length ? previewNodes : [undefined, undefined]).map((node, index) => (
                     <div key={node?.id || `folder-placeholder-${index}`} className={`canvas-folder-preview-card canvas-folder-preview-card-${index + 1}`}>
-                        <FolderNodeMedia node={node} fallback={index === 0} />
+                        <FolderNodeMedia node={node} />
                     </div>
                 ))}
             </div>
 
             <div className="canvas-folder-front">
                 <div className="canvas-folder-front-media" aria-hidden>
-                    <FolderNodeMedia node={primaryNode} fallback />
+                    <FolderThemeMedia source={themeCover} />
                 </div>
                 <div className="canvas-folder-front-tint" aria-hidden />
 
@@ -180,7 +182,11 @@ function canPreviewFolderNode(node: CanvasNodeData) {
     return node.type !== CanvasNodeType.Frame;
 }
 
-function FolderNodeMedia({ node, fallback = false }: { node?: CanvasNodeData; fallback?: boolean }) {
+function FolderThemeMedia({ source }: { source: string }) {
+    return <img src={source} alt="" loading="eager" decoding="async" draggable={false} />;
+}
+
+function FolderNodeMedia({ node }: { node?: CanvasNodeData }) {
     if (node?.type === CanvasNodeType.Image && node.metadata?.content) {
         return <img src={node.metadata.content} alt="" loading="lazy" decoding="async" draggable={false} />;
     }
@@ -198,7 +204,7 @@ function FolderNodeMedia({ node, fallback = false }: { node?: CanvasNodeData; fa
         return <span className="canvas-folder-text-preview">{node.metadata?.content || node.title}</span>;
     }
     if (node) return <FileText className="canvas-folder-file-icon" />;
-    return fallback ? <img src={DEFAULT_FOLDER_COVER} alt="" loading="lazy" decoding="async" draggable={false} /> : <span className="canvas-folder-file-sheet" />;
+    return <span className="canvas-folder-file-sheet" />;
 }
 
 function formatFolderDate(value?: string) {
diff --git a/web/src/pages/dev/folder-preview-lab.css b/web/src/pages/dev/folder-preview-lab.css
index ce78dad46..c567d1395 100644
--- a/web/src/pages/dev/folder-preview-lab.css
+++ b/web/src/pages/dev/folder-preview-lab.css
@@ -1,7 +1,10 @@
 .folder-preview-lab {
     min-height: 100dvh;
     overflow: auto;
-    background: var(--workspace-canvas);
+    background-color: var(--workspace-canvas);
+    background-image: radial-gradient(circle, var(--border-semantic) 1.15px, transparent 1.35px);
+    background-position: center top;
+    background-size: 24px 24px;
     color: var(--fg);
     padding: var(--space-10) var(--space-12) var(--space-20);
 }
@@ -49,6 +52,43 @@
     font-size: var(--fs-caption);
 }
 
+.folder-preview-lab-controls {
+    display: flex;
+    flex: 0 0 auto;
+    align-items: center;
+    gap: var(--space-3);
+}
+
+.folder-preview-lab-theme {
+    display: inline-flex;
+    border-radius: var(--r-full);
+    background: var(--library-surface);
+    padding: var(--space-1);
+}
+
+.folder-preview-lab-theme button {
+    display: inline-flex;
+    min-height: 40px;
+    align-items: center;
+    gap: var(--space-2);
+    border: 0;
+    border-radius: var(--r-full);
+    background: transparent;
+    padding: var(--space-2) var(--space-3);
+    color: var(--muted-foreground);
+    font-size: var(--fs-caption);
+}
+
+.folder-preview-lab-theme button[aria-pressed="true"] {
+    background: var(--control-selected-bg);
+    color: var(--control-selected-fg);
+}
+
+.folder-preview-lab-theme svg {
+    width: var(--space-4);
+    height: var(--space-4);
+}
+
 .folder-preview-lab-guide svg,
 .folder-preview-lab-open svg,
 .folder-preview-lab-drawer-header button svg {
@@ -56,10 +96,38 @@
     height: var(--space-4);
 }
 
-.folder-preview-lab-grid {
-    display: grid;
+.folder-preview-lab-section {
     max-width: 1280px;
     margin: 0 auto;
+}
+
+.folder-preview-lab-section + .folder-preview-lab-section {
+    margin-top: var(--space-16);
+}
+
+.folder-preview-lab-section-heading {
+    display: flex;
+    margin-bottom: var(--space-6);
+    align-items: end;
+    justify-content: space-between;
+    gap: var(--space-6);
+}
+
+.folder-preview-lab-section-heading h2 {
+    margin: 0;
+    font-size: var(--fs-title);
+    font-weight: 620;
+    letter-spacing: -.02em;
+}
+
+.folder-preview-lab-section-heading p {
+    margin: 0;
+    color: var(--muted-foreground);
+    font-size: var(--fs-caption);
+}
+
+.folder-preview-lab-grid {
+    display: grid;
     grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
     gap: var(--space-10) var(--space-8);
 }
@@ -214,7 +282,9 @@
 
 @media (max-width: 760px) {
     .folder-preview-lab { padding: var(--space-6) var(--space-4) var(--space-12); }
-    .folder-preview-lab-header { align-items: flex-start; flex-direction: column; }
+    .folder-preview-lab-header,
+    .folder-preview-lab-controls,
+    .folder-preview-lab-section-heading { align-items: flex-start; flex-direction: column; }
     .folder-preview-lab-grid { grid-template-columns: minmax(0, 1fr); }
     .folder-preview-lab-folder { transform: scale(.86); transform-origin: top center; margin-bottom: -40px; }
     .folder-preview-lab-drawer { inset: var(--space-2); padding: var(--space-4); }
diff --git a/web/src/pages/dev/folder-preview-lab.tsx b/web/src/pages/dev/folder-preview-lab.tsx
index 08c388e59..2a25ec90b 100644
--- a/web/src/pages/dev/folder-preview-lab.tsx
+++ b/web/src/pages/dev/folder-preview-lab.tsx
@@ -1,7 +1,8 @@
 import { useMemo, useState } from "react";
-import { ChevronLeft, FolderOpen, ImagePlus, MousePointer2 } from "lucide-react";
+import { ChevronLeft, FolderOpen, ImagePlus, Moon, MousePointer2, Sun } from "lucide-react";
 
 import { CanvasFolderPreview } from "@/components/canvas/canvas-folder-preview";
+import { useThemeStore } from "@/stores/use-theme-store";
 import type { CanvasFolderStyle, CanvasNodeData } from "@/types/canvas";
 import { CanvasNodeType } from "@/types/canvas";
 
@@ -16,6 +17,23 @@ const STYLE_PRESETS: Array<{ style: CanvasFolderStyle; name: string; hint: strin
     { style: "compact", name: "紧凑资料", hint: "衍生 · 高频调用" },
 ];
 
+const PRESET_GROUPS = [
+    {
+        key: "reference",
+        title: "原图复刻",
+        description: "三种参考结构：玻璃加号、内容陈列、午夜封面。",
+        presets: STYLE_PRESETS.slice(0, 3),
+    },
+    {
+        key: "derived",
+        title: "风格衍生",
+        description: "沿用同一主题皮肤与交互合同的工作流变体。",
+        presets: STYLE_PRESETS.slice(3),
+    },
+];
+
+const FOLDER_THEME_COVER = "/images/canvas/folder-default-cover.png";
+
 const SAMPLE_MEDIA = [
     "/short-drama-styles/fantasy-3d.jpg",
     "/short-drama-styles/suspense-noir.jpg",
@@ -40,12 +58,12 @@ function makeFolderNode(style: CanvasFolderStyle, index: number): CanvasNodeData
     return {
         id: `folder-${style}`,
         type: CanvasNodeType.Frame,
-        title: ["我的素材", "项目资料", "视觉档案", "灵感收藏", "影像资产", "快速调用"][index],
+        title: ["My Files", "Archives", "My Files", "灵感收藏", "影像资产", "快速调用"][index],
         position: { x: 0, y: 0 },
         width: 360,
         height: 280,
         metadata: {
-            folder: { style, createdAt: new Date(2026, 7, 19 + index).toISOString() },
+            folder: { style, createdAt: new Date(2026, 7, 19 + index).toISOString(), themeCover: FOLDER_THEME_COVER },
             frame: { collapsed: true, expandedWidth: 760, expandedHeight: 520 },
         },
     };
@@ -63,9 +81,11 @@ const INITIAL_CHILDREN = Object.fromEntries(
 ) as Record<string, CanvasNodeData[]>;
 
 export default function FolderPreviewLab() {
+    const theme = useThemeStore((state) => state.theme);
+    const setTheme = useThemeStore((state) => state.setTheme);
     const [folders, setFolders] = useState(INITIAL_FOLDERS);
     const [childrenByFolder, setChildrenByFolder] = useState(INITIAL_CHILDREN);
-    const [selectedId, setSelectedId] = useState(INITIAL_FOLDERS[0].id);
+    const [selectedId, setSelectedId] = useState<string | null>(null);
     const [openedId, setOpenedId] = useState<string | null>(null);
     const openedFolder = useMemo(() => folders.find((folder) => folder.id === openedId), [folders, openedId]);
     const openedChildren = openedId ? childrenByFolder[openedId] || [] : [];
@@ -95,64 +115,82 @@ export default function FolderPreviewLab() {
                 <div>
                     <span className="folder-preview-lab-kicker">DEV · INTERACTIVE FOLDER LAB</span>
                     <h1>通用素材文件夹</h1>
-                    <p>悬停查看动效，单击选中，双击打开；标题和右上角菜单都可以直接操作。</p>
+                    <p>红蓝抽象图只作为文件夹主题皮肤；打开文件夹后，内部素材以独立内容卡片展示。悬停、单击和双击都有对应反馈。</p>
                 </div>
-                <div className="folder-preview-lab-guide">
-                    <MousePointer2 aria-hidden />
-                    <span>试试 hover、双击与样式切换</span>
+                <div className="folder-preview-lab-controls">
+                    <div className="folder-preview-lab-theme" aria-label="预览主题">
+                        <button type="button" aria-pressed={theme === "light"} onClick={() => setTheme("light")}>
+                            <Sun aria-hidden /> 浅色
+                        </button>
+                        <button type="button" aria-pressed={theme === "dark"} onClick={() => setTheme("dark")}>
+                            <Moon aria-hidden /> 深色
+                        </button>
+                    </div>
+                    <div className="folder-preview-lab-guide">
+                        <MousePointer2 aria-hidden />
+                        <span>试试 hover、双击与样式切换</span>
+                    </div>
                 </div>
             </header>
 
-            <section className="folder-preview-lab-grid" aria-label="文件夹样式预览">
-                {folders.map((folder, index) => {
-                    const preset = STYLE_PRESETS[index];
-                    const childNodes = childrenByFolder[folder.id] || [];
-                    return (
-                        <article key={folder.id} className="folder-preview-lab-item">
-                            <div className="folder-preview-lab-item-copy">
-                                <strong>{preset.name}</strong>
-                                <span>{preset.hint}</span>
-                            </div>
-                            <div
-                                className="folder-preview-lab-folder"
-                                role="button"
-                                tabIndex={0}
-                                aria-label={`打开 ${folder.title}`}
-                                onClick={() => setSelectedId(folder.id)}
-                                onDoubleClick={() => setOpenedId(folder.id)}
-                                onKeyDown={(event) => {
-                                    if (event.key === "Enter" || event.key === " ") {
-                                        event.preventDefault();
-                                        setOpenedId(folder.id);
-                                    }
-                                }}
-                            >
-                                <CanvasFolderPreview
-                                    data={folder}
-                                    childNodes={childNodes}
-                                    active={selectedId === folder.id}
-                                    isDropTarget={false}
-                                    readOnly={false}
-                                    onToggleCollapsed={setOpenedId}
-                                    onTitleChange={(nodeId, title) => updateFolder(nodeId, (current) => ({ ...current, title }))}
-                                    onStyleChange={(nodeId, style) =>
-                                        updateFolder(nodeId, (current) => ({
-                                            ...current,
-                                            metadata: {
-                                                ...current.metadata,
-                                                folder: { ...current.metadata!.folder!, style },
-                                            },
-                                        }))
-                                    }
-                                />
-                            </div>
-                            <button type="button" className="folder-preview-lab-open" onClick={() => setOpenedId(folder.id)}>
-                                <FolderOpen aria-hidden /> 打开文件夹
-                            </button>
-                        </article>
-                    );
-                })}
-            </section>
+            {PRESET_GROUPS.map((group) => (
+                <section key={group.key} className="folder-preview-lab-section" aria-labelledby={`folder-preview-${group.key}`}>
+                    <div className="folder-preview-lab-section-heading">
+                        <h2 id={`folder-preview-${group.key}`}>{group.title}</h2>
+                        <p>{group.description}</p>
+                    </div>
+                    <div className="folder-preview-lab-grid">
+                        {group.presets.map((preset) => {
+                            const folder = folders.find((item) => item.id === `folder-${preset.style}`)!;
+                            const childNodes = childrenByFolder[folder.id] || [];
+                            return (
+                                <article key={folder.id} className="folder-preview-lab-item">
+                                    <div className="folder-preview-lab-item-copy">
+                                        <strong>{preset.name}</strong>
+                                        <span>{preset.hint}</span>
+                                    </div>
+                                    <div
+                                        className="folder-preview-lab-folder"
+                                        role="button"
+                                        tabIndex={0}
+                                        aria-label={`打开 ${folder.title}`}
+                                        onClick={() => setSelectedId(folder.id)}
+                                        onDoubleClick={() => setOpenedId(folder.id)}
+                                        onKeyDown={(event) => {
+                                            if (event.key === "Enter" || event.key === " ") {
+                                                event.preventDefault();
+                                                setOpenedId(folder.id);
+                                            }
+                                        }}
+                                    >
+                                        <CanvasFolderPreview
+                                            data={folder}
+                                            childNodes={childNodes}
+                                            active={selectedId === folder.id}
+                                            isDropTarget={false}
+                                            readOnly={false}
+                                            onToggleCollapsed={setOpenedId}
+                                            onTitleChange={(nodeId, title) => updateFolder(nodeId, (current) => ({ ...current, title }))}
+                                            onStyleChange={(nodeId, style) =>
+                                                updateFolder(nodeId, (current) => ({
+                                                    ...current,
+                                                    metadata: {
+                                                        ...current.metadata,
+                                                        folder: { ...current.metadata!.folder!, style },
+                                                    },
+                                                }))
+                                            }
+                                        />
+                                    </div>
+                                    <button type="button" className="folder-preview-lab-open" onClick={() => setOpenedId(folder.id)}>
+                                        <FolderOpen aria-hidden /> 打开文件夹
+                                    </button>
+                                </article>
+                            );
+                        })}
+                    </div>
+                </section>
+            ))}
 
             {openedFolder ? (
                 <section className="folder-preview-lab-drawer" aria-label={`${openedFolder.title} 内容`}>
diff --git a/web/src/styles/globals.css b/web/src/styles/globals.css
index e4be91974..973769d51 100644
--- a/web/src/styles/globals.css
+++ b/web/src/styles/globals.css
@@ -6021,6 +6021,7 @@
     }
 
     .canvas-folder-preview {
+        --canvas-folder-front-shape: path("M 28 58 H 112 C 126 58 135 62 144 70 L 174 96 C 182 104 191 108 204 108 H 332 C 348 108 360 120 360 136 V 252 C 360 268 348 280 332 280 H 28 C 12 280 0 268 0 252 V 86 C 0 70 12 58 28 58 Z");
         position: relative;
         width: 100%;
         height: 100%;
@@ -6062,11 +6063,14 @@
 
     .canvas-folder-back,
     .canvas-folder-front,
-    .canvas-folder-preview-card {
+    .canvas-folder-preview-card,
+    .canvas-folder-paper-sheet {
         position: absolute;
         overflow: hidden;
     }
 
+    .canvas-folder-paper-sheet { display: none; }
+
     .canvas-folder-back {
         z-index: 1;
         inset: 0;
@@ -6125,7 +6129,7 @@
         inset: 0;
         border-radius: var(--r-5xl);
         box-shadow: inset 0 0 0 2px var(--canvas-folder-edge);
-        clip-path: path("M 28 58 H 112 C 126 58 135 62 144 70 L 174 96 C 182 104 191 108 204 108 H 332 C 348 108 360 120 360 136 V 252 C 360 268 348 280 332 280 H 28 C 12 280 0 268 0 252 V 86 C 0 70 12 58 28 58 Z");
+        clip-path: var(--canvas-folder-front-shape);
         backdrop-filter: blur(24px) saturate(118%);
         transition: transform var(--motion-state) var(--motion-ease-out);
     }
@@ -6232,7 +6236,7 @@
         box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--canvas-folder-action-fg) 22%, transparent), 0 12px 26px color-mix(in srgb, var(--cn-spatial-shadow) 52%, transparent);
     }
 
-    .canvas-folder-add > svg { width: 34px; height: 34px; stroke-width: 1.5; }
+    .canvas-folder-add > svg { width: 34px; height: 34px; color: var(--canvas-folder-action-fg); stroke: currentColor; stroke-width: 1.5; }
 
     .canvas-folder-options {
         width: 66px;
@@ -6292,30 +6296,158 @@
     .canvas-folder-file-icon { position: absolute; inset: 0; width: 36px; height: 36px; margin: auto; opacity: .42; }
     .canvas-folder-file-sheet { display: block; width: 100%; height: 100%; background: var(--canvas-folder-surface-strong); }
 
-    /* 三个参考态。stacked 露出内容卡；midnight 把标题压进深色封面标签。 */
+    /* 三个参考态严格保留各自材质：玻璃磨砂、白纸层叠、红黑夜间封面。 */
+    .canvas-folder-preview-glass {
+        --canvas-folder-front-shape: path("M 28 70 H 112 C 126 70 136 74 146 82 L 174 104 C 183 112 192 116 205 116 H 332 C 348 116 360 128 360 144 V 252 C 360 268 348 280 332 280 H 28 C 12 280 0 268 0 252 V 98 C 0 82 12 70 28 70 Z");
+        --canvas-folder-surface: rgba(248, 249, 251, .62);
+        --canvas-folder-surface-strong: rgba(251, 252, 253, .9);
+        --canvas-folder-edge: rgba(255, 255, 255, .78);
+        --canvas-folder-ink: #17181b;
+        --canvas-folder-muted: rgba(23, 24, 27, .54);
+        --canvas-folder-action-bg: rgba(8, 9, 11, .94);
+        --canvas-folder-action-fg: #fff;
+    }
+
+    .canvas-folder-preview-glass .canvas-folder-front-media { opacity: .66; }
+    .canvas-folder-preview-glass .canvas-folder-front-tint { background: rgba(249, 250, 252, .56); }
+    .canvas-folder-preview-glass .canvas-folder-front {
+        box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .74), 0 18px 34px rgba(12, 18, 28, .12);
+        backdrop-filter: blur(28px) saturate(124%);
+    }
+
+    .dark .canvas-folder-preview-glass {
+        --canvas-folder-surface: rgba(10, 12, 16, .54);
+        --canvas-folder-surface-strong: rgba(13, 15, 20, .82);
+        --canvas-folder-edge: rgba(255, 255, 255, .2);
+        --canvas-folder-ink: rgba(255, 255, 255, .96);
+        --canvas-folder-muted: rgba(255, 255, 255, .58);
+        --canvas-folder-action-bg: rgba(246, 247, 249, .94);
+        --canvas-folder-action-fg: #111318;
+    }
+
+    .dark .canvas-folder-preview-glass .canvas-folder-front-media { opacity: .78; }
+    .dark .canvas-folder-preview-glass .canvas-folder-front-tint { background: rgba(7, 9, 13, .5); }
+    .dark .canvas-folder-preview-glass .canvas-folder-front {
+        box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .18), 0 22px 42px rgba(0, 0, 0, .42);
+    }
+
     .canvas-folder-preview-glass .canvas-folder-preview-stack,
     .canvas-folder-preview-midnight .canvas-folder-preview-stack,
     .canvas-folder-preview-cinema .canvas-folder-preview-stack { opacity: 0; }
 
-    .canvas-folder-preview-stacked .canvas-folder-back,
+    .canvas-folder-preview-stacked {
+        --canvas-folder-front-shape: path("M 28 116 H 100 C 116 116 126 120 138 130 L 164 150 C 173 158 183 162 196 162 H 332 C 348 162 360 174 360 190 V 252 C 360 268 348 280 332 280 H 28 C 12 280 0 268 0 252 V 144 C 0 128 12 116 28 116 Z");
+        --canvas-folder-surface: rgba(248, 249, 250, .72);
+        --canvas-folder-surface-strong: rgba(255, 255, 255, .94);
+        --canvas-folder-edge: rgba(255, 255, 255, .84);
+        --canvas-folder-ink: #17181b;
+        --canvas-folder-muted: rgba(23, 24, 27, .5);
+        --canvas-folder-action-bg: rgba(235, 237, 240, .78);
+        --canvas-folder-action-fg: #16181b;
+    }
+
+    .canvas-folder-preview-stacked .canvas-folder-back { opacity: 0; }
+    .canvas-folder-preview-stacked .canvas-folder-paper-sheet {
+        z-index: 3;
+        top: 4px;
+        left: 80px;
+        display: block;
+        width: 238px;
+        height: 214px;
+        border-radius: var(--r-4xl);
+        background: rgba(255, 255, 255, .96);
+        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .82), 0 18px 34px rgba(21, 24, 30, .12);
+    }
+
+    .canvas-folder-preview-stacked .canvas-folder-preview-card-1 {
+        top: 52px;
+        left: 16px;
+        width: 178px;
+        height: 154px;
+        transform: rotate(-5deg);
+    }
+
+    .canvas-folder-preview-stacked .canvas-folder-preview-card-2 {
+        top: 46px;
+        right: 8px;
+        width: 176px;
+        height: 154px;
+        transform: rotate(5deg);
+    }
+
+    .canvas-folder-preview-stacked .canvas-folder-preview-card-3 { opacity: 0; }
+    .canvas-folder-preview-stacked .canvas-folder-front-media { opacity: .18; }
+    .canvas-folder-preview-stacked .canvas-folder-front-tint { background: rgba(232, 234, 238, .72); }
+    .canvas-folder-preview-stacked .canvas-folder-front {
+        box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .82), 0 20px 38px rgba(21, 24, 30, .14);
+        backdrop-filter: blur(30px) saturate(112%);
+    }
+
+    .dark .canvas-folder-preview-stacked {
+        --canvas-folder-surface: rgba(19, 21, 26, .7);
+        --canvas-folder-surface-strong: rgba(29, 32, 38, .94);
+        --canvas-folder-edge: rgba(255, 255, 255, .18);
+        --canvas-folder-ink: rgba(255, 255, 255, .96);
+        --canvas-folder-muted: rgba(255, 255, 255, .56);
+        --canvas-folder-action-bg: rgba(45, 48, 55, .82);
+        --canvas-folder-action-fg: rgba(255, 255, 255, .94);
+    }
+
+    .dark .canvas-folder-preview-stacked .canvas-folder-paper-sheet {
+        background: rgba(38, 41, 48, .98);
+        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .1), 0 20px 42px rgba(0, 0, 0, .42);
+    }
+
+    .dark .canvas-folder-preview-stacked .canvas-folder-front-tint { background: rgba(17, 19, 24, .72); }
+    .dark .canvas-folder-preview-stacked .canvas-folder-front {
+        box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .14), 0 22px 42px rgba(0, 0, 0, .46);
+    }
+
     .canvas-folder-preview-paper .canvas-folder-back,
     .canvas-folder-preview-compact .canvas-folder-back { background: var(--canvas-folder-surface-strong); }
 
-    .canvas-folder-preview-stacked .canvas-folder-front-media,
     .canvas-folder-preview-paper .canvas-folder-front-media,
     .canvas-folder-preview-compact .canvas-folder-front-media { opacity: .24; }
 
-    .canvas-folder-preview-stacked .canvas-folder-copy,
+    .canvas-folder-preview-stacked .canvas-folder-copy { top: 142px; bottom: auto; }
     .canvas-folder-preview-paper .canvas-folder-copy { top: 132px; bottom: auto; }
 
     .canvas-folder-preview-midnight,
-    .canvas-folder-preview-cinema { --canvas-folder-ink: rgba(255, 255, 255, .96); --canvas-folder-muted: rgba(255, 255, 255, .58); --canvas-folder-edge: rgba(255, 255, 255, .19); --canvas-folder-surface: rgba(4, 5, 7, .78); --canvas-folder-surface-strong: rgba(8, 9, 12, .9); }
+    .canvas-folder-preview-cinema {
+        --canvas-folder-ink: rgba(255, 255, 255, .96);
+        --canvas-folder-muted: rgba(255, 255, 255, .58);
+        --canvas-folder-edge: rgba(255, 255, 255, .19);
+        --canvas-folder-surface: rgba(4, 5, 8, .7);
+        --canvas-folder-surface-strong: rgba(7, 8, 12, .9);
+        --canvas-folder-action-bg: rgba(5, 6, 9, .88);
+        --canvas-folder-action-fg: rgba(255, 255, 255, .96);
+    }
+    .canvas-folder-preview-midnight {
+        --canvas-folder-front-shape: path("M 28 116 H 118 C 134 116 145 121 157 132 L 180 151 C 189 159 198 162 211 162 H 332 C 348 162 360 174 360 190 V 252 C 360 268 348 280 332 280 H 28 C 12 280 0 268 0 252 V 144 C 0 128 12 116 28 116 Z");
+    }
+    .canvas-folder-preview-midnight .canvas-folder-back,
+    .canvas-folder-preview-cinema .canvas-folder-back {
+        inset: 0 0 34px;
+        border-radius: var(--r-5xl);
+        clip-path: none;
+    }
     .canvas-folder-preview-midnight .canvas-folder-copy,
     .canvas-folder-preview-cinema .canvas-folder-copy { top: 142px; right: 34px; bottom: auto; left: auto; max-width: 170px; }
     .canvas-folder-preview-midnight .canvas-folder-front-media,
-    .canvas-folder-preview-cinema .canvas-folder-front-media { opacity: .78; }
+    .canvas-folder-preview-cinema .canvas-folder-front-media { opacity: .72; }
     .canvas-folder-preview-midnight .canvas-folder-front-tint,
-    .canvas-folder-preview-cinema .canvas-folder-front-tint { background: color-mix(in srgb, var(--canvas-folder-surface) 88%, transparent); }
+    .canvas-folder-preview-cinema .canvas-folder-front-tint { background: rgba(4, 5, 8, .7); }
+    .canvas-folder-preview-midnight .canvas-folder-front,
+    .canvas-folder-preview-cinema .canvas-folder-front {
+        box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .15), 0 24px 48px rgba(0, 0, 0, .44);
+        backdrop-filter: blur(30px) saturate(118%);
+    }
+
+    .dark .canvas-folder-preview-midnight .canvas-folder-front-tint { background: rgba(2, 3, 6, .78); }
+    .dark .canvas-folder-preview-midnight .canvas-folder-front-media { opacity: .82; }
+
+    .canvas-folder-preview-glass .canvas-folder-meta,
+    .canvas-folder-preview-stacked .canvas-folder-meta { display: none; }
 
     .canvas-folder-preview-paper { --canvas-folder-surface: color-mix(in srgb, var(--background) 88%, transparent); }
     .canvas-folder-preview-cinema { filter: drop-shadow(0 28px 32px color-mix(in srgb, var(--cn-spatial-shadow) 72%, transparent)); }
diff --git a/web/src/types/canvas.ts b/web/src/types/canvas.ts
index 37ccda9a6..14ed7f85f 100644
--- a/web/src/types/canvas.ts
+++ b/web/src/types/canvas.ts
@@ -287,6 +287,7 @@ export type CanvasNodeMetadata = {
     folder?: {
         style: CanvasFolderStyle;
         createdAt: string;
+        themeCover?: string;
         assetFolderId?: string;
         projectId?: string;
     };