diff --git a/README.md b/README.md
index bf459c8..9a9f05a 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ main 推送通过 CI 验证后自动部署；Pull Request 只验证，不部署
 
 `content/docs/00-endor-concepts-draft.md` 解释全球入口、区域网关与 Runtime、分片、CDN、身份及跨区恢复的概念设计，页面为 `/docs/00-endor-concepts-draft`。
 
-图形源码位于 `tools/figures/src/endor_figures/architecture.py`，由 `pnpm figures` 生成 `apps/docs/public/figures/endor-architecture.svg`。Python 负责可复现的节点、全连接和复制路径，React 查看器提供放大、滚动与 SVG 下载。无需外部图标、字体或绘图服务。图中的数量是示意，身份服务/CDN 接入属于建议，所有未实现的关系均以草案说明。
+图形源码位于 `tools/figures/src/endor_figures/architecture.py`，由 `pnpm figures` 生成 `apps/docs/public/figures/endor-architecture.svg`。Python 负责可复现的节点、全连接和复制路径，正文直接显示图片，点击可放大；大图支持原尺寸查看、滚动和 Escape/空白处关闭。无需外部图标、字体或绘图服务。图中的数量是示意，身份服务/CDN 接入属于建议，所有未实现的关系均以草案说明。
 
 拓扑检查：`uv run --locked --project tools/figures python -m unittest discover -s tools/figures/tests -v`。容器检查流程会运行同一检查。
 
diff --git a/apps/docs/src/components/ArchitectureFigure.tsx b/apps/docs/src/components/ArchitectureFigure.tsx
index 88dc88c..f717a27 100644
--- a/apps/docs/src/components/ArchitectureFigure.tsx
+++ b/apps/docs/src/components/ArchitectureFigure.tsx
@@ -1,104 +1,66 @@
 import { useRef, useState } from "react";
 
 const source = "/figures/endor-architecture.svg";
-const figureWidth = 2000;
 
 export function ArchitectureFigure({ alt }: { alt: string }) {
   const dialog = useRef<HTMLDialogElement>(null);
   const trigger = useRef<HTMLButtonElement>(null);
-  const pan = useRef<HTMLDivElement>(null);
-  const [fit, setFit] = useState(true);
-  const [zoom, setZoom] = useState(1);
+  const stage = useRef<HTMLDivElement>(null);
+  const [originalSize, setOriginalSize] = useState(false);
+
   function open() {
-    setFit(true);
-    setZoom(1);
+    setOriginalSize(false);
     dialog.current?.showModal();
   }
-  function changeZoom(delta: number) {
-    const current = fit
-      ? ((pan.current?.clientWidth ?? figureWidth + 16) - 16) / figureWidth
-      : zoom;
-    setFit(false);
-    setZoom(
-      Math.max(0.1, Math.min(2, Math.round((current + delta) * 100) / 100)),
-    );
-  }
+
   return (
-    <figure className="architecture-figure">
-      <span className="figure-toolbar">
-        <span>ENDOR / 架构拓扑</span>
-        <button ref={trigger} onClick={open}>
-          放大查看 ↗
-        </button>
-      </span>
+    <>
       <button
-        className="figure-preview"
+        ref={trigger}
+        className="architecture-preview"
         onClick={open}
         aria-label="放大 Endor 架构图"
       >
         {/* eslint-disable-next-line @next/next/no-img-element */}
         <img src={source} alt={alt} />
       </button>
-      <span className="figure-caption">
-        多区域拓扑 · 独立分片群与统一备份 · 点击放大查看
-      </span>
       <dialog
         ref={dialog}
-        className="figure-dialog"
-        aria-label="Endor 架构图查看器"
+        className="image-lightbox"
+        aria-label="Endor 架构图大图"
+        onClick={(event) => {
+          if (
+            event.target === dialog.current ||
+            event.target === stage.current
+          ) {
+            dialog.current?.close();
+          }
+        }}
         onClose={() => trigger.current?.focus()}
       >
-        <div className="figure-viewer-toolbar">
-          <strong>Endor 架构拓扑</strong>
-          <div className="figure-controls">
-            <button
-              onClick={() => changeZoom(-0.25)}
-              aria-label="缩小架构图"
-              disabled={!fit && zoom <= 0.1}
-            >
-              −
-            </button>
-            <span aria-live="polite">
-              {fit ? "适应宽度" : `${Math.round(zoom * 100)}%`}
-            </span>
-            <button
-              onClick={() => changeZoom(0.25)}
-              aria-label="放大架构图"
-              disabled={!fit && zoom >= 2}
-            >
-              +
-            </button>
-            <button onClick={() => setFit(true)}>适应</button>
-            <a href={source} download="endor-architecture.svg">
-              下载 SVG
-            </a>
-            <button
-              onClick={() => dialog.current?.close()}
-              aria-label="关闭架构图"
-            >
-              关闭 ×
-            </button>
-          </div>
-        </div>
-        <div
-          ref={pan}
-          className="figure-pan"
-          tabIndex={0}
-          aria-label="架构图滚动区域，可使用方向键滚动"
+        <button
+          className="image-lightbox-close"
+          aria-label="关闭图片"
+          onClick={() => dialog.current?.close()}
         >
-          {/* eslint-disable-next-line @next/next/no-img-element */}
-          <img
-            src={source}
-            alt={alt}
-            style={{ width: fit ? "100%" : figureWidth * zoom }}
-          />
+          ×
+        </button>
+        <div
+          ref={stage}
+          className="image-lightbox-stage"
+          tabIndex={0}
+          aria-label="图片滚动区域"
+        >
+          <button
+            className={`image-lightbox-picture${originalSize ? " original-size" : ""}`}
+            onClick={() => setOriginalSize((value) => !value)}
+            aria-label={originalSize ? "图片适应屏幕" : "查看图片原尺寸"}
+          >
+            {/* eslint-disable-next-line @next/next/no-img-element */}
+            <img src={source} alt={alt} />
+          </button>
         </div>
-        <p className="figure-viewer-hint">
-          实线：请求 /
-          依赖　·　紫色：身份　·　蓝色点线：回源　·　金色：统一备份。放大后可横向、纵向滚动，Esc
-          关闭。
-        </p>
       </dialog>
-    </figure>
+    </>
   );
 }
diff --git a/apps/docs/src/styles/globals.css b/apps/docs/src/styles/globals.css
index ded8101..745adfa 100644
--- a/apps/docs/src/styles/globals.css
+++ b/apps/docs/src/styles/globals.css
@@ -1341,166 +1341,109 @@ button {
   border-radius: 0;
 }
 
-/* The topology stays a reproducible SVG; React only supplies the viewer. */
-.architecture-figure {
-  display: block;
-  border: 1px solid var(--line);
-  border-radius: 10px;
-  overflow: hidden;
-  margin: 28px 0;
-}
-.figure-toolbar {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 12px;
-  padding: 12px 16px;
-  background: #f5f8f3;
-  font:
-    11px ui-monospace,
-    monospace;
-  color: #6c806f;
-}
-.figure-toolbar button {
-  color: var(--green);
-  border: 1px solid #d7e3d4;
-  padding: 5px 10px;
-  border-radius: 5px;
-  background: white;
-}
-.figure-preview {
+/* Inline diagrams behave like ordinary article images with click-to-enlarge. */
+.architecture-preview {
   display: block;
   width: 100%;
-  background: #fcfdfb;
+  margin: 28px 0;
+  padding: 0;
+  border: 0;
+  background: transparent;
   cursor: zoom-in;
 }
-.prose .figure-preview img {
+.prose .architecture-preview img {
   display: block;
   width: 100%;
-  padding: 0;
-  margin: 0;
-  border: 0;
-  border-radius: 0;
-}
-.figure-caption {
-  display: block;
-  padding: 10px 16px;
-  font-size: 11px;
-  color: #758576;
-  border-top: 1px solid var(--line);
-}
-.figure-dialog {
-  padding: 0;
-  width: 96vw;
-  max-width: 1900px;
-  height: 94dvh;
-  max-height: 94dvh;
-  border: 1px solid #dce5d9;
-  border-radius: 12px;
-  margin: auto;
-  overflow: hidden;
-  background: #fcfdfb;
-  box-shadow: 0 20px 100px #18312530;
-}
-.figure-dialog::backdrop {
-  background: #1e322e66;
-  backdrop-filter: blur(4px);
-}
-.figure-dialog[open] {
-  display: flex;
-  flex-direction: column;
-}
-.figure-viewer-toolbar {
-  display: flex;
-  justify-content: space-between;
-  gap: 16px;
-  flex-wrap: wrap;
-  padding: 12px 18px;
-  background: #fff;
-  border-bottom: 1px solid var(--line);
-  align-items: center;
-}
-.figure-viewer-toolbar strong {
-  font-size: 14px;
-  font-weight: 600;
-  color: var(--ink);
-}
-.figure-viewer-toolbar small {
-  color: #a68b52;
-  font-size: 11px;
-  margin-left: 5px;
-}
-.figure-controls {
-  display: flex;
-  align-items: center;
-  flex-wrap: wrap;
-  gap: 8px;
-  font-size: 11px;
-  color: #647c67;
-}
-.figure-controls button,
-.figure-controls a {
-  min-height: 32px;
-  min-width: 32px;
-  padding: 4px 9px;
-  border: 1px solid #dae4d6;
-  border-radius: 5px;
-  background: #fff;
-  font-weight: 400;
-  text-decoration: none;
-}
-.figure-controls button:disabled {
-  opacity: 0.35;
-  cursor: default;
-}
-.figure-controls > span {
-  min-width: 62px;
-  text-align: center;
-}
-.figure-pan {
-  overflow: auto;
-  flex: 1;
-  min-height: 0;
-  overscroll-behavior: contain;
-  padding: 8px;
-}
-.prose .figure-pan img {
-  display: block;
-  max-width: none;
   height: auto;
-  margin: 0 auto;
+  margin: 0;
   padding: 0;
   border: 0;
   border-radius: 0;
-  background: #fcfdfb;
+  background: transparent;
 }
-.figure-viewer-hint {
-  margin: 0 !important;
-  padding: 10px 18px;
-  border-top: 1px solid var(--line);
-  background: #fff;
-  color: #798d79;
-  font-size: 10px !important;
-  line-height: 1.7 !important;
+.image-lightbox {
+  width: 100vw;
+  height: 100dvh;
+  max-width: none;
+  max-height: none;
+  margin: 0;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  overflow: hidden;
+}
+.image-lightbox::backdrop {
+  background: rgba(245, 247, 244, 0.97);
+}
+.image-lightbox-stage {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  overflow: auto;
+  overscroll-behavior: contain;
+  padding: 32px;
+}
+.image-lightbox-picture {
+  display: block;
+  flex-shrink: 0;
+  margin: auto;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  cursor: zoom-in;
+}
+.prose .image-lightbox-picture img {
+  display: block;
+  width: auto;
+  height: auto;
+  max-width: calc(100vw - 64px);
+  max-height: calc(100dvh - 64px);
+  margin: 0;
+  padding: 0;
+  border: 0;
+  border-radius: 0;
+  background: transparent;
+}
+.image-lightbox-picture.original-size {
+  cursor: zoom-out;
+}
+.prose .image-lightbox-picture.original-size img {
+  width: 2000px;
+  max-width: none;
+  max-height: none;
+}
+.image-lightbox-close {
+  position: fixed;
+  z-index: 1;
+  top: 12px;
+  right: 12px;
+  display: grid;
+  place-items: center;
+  width: 40px;
+  height: 40px;
+  padding: 0;
+  border: 0;
+  border-radius: 50%;
+  background: rgba(255, 255, 255, 0.9);
+  color: #52655a;
+  font:
+    28px/1 ui-sans-serif,
+    system-ui,
+    sans-serif;
+}
+.image-lightbox-close:hover {
+  background: #edf2ec;
 }
 @media (max-width: 560px) {
-  .figure-viewer-toolbar {
-    padding: 10px;
-    gap: 8px;
+  .image-lightbox-stage {
+    padding: 16px;
   }
-  .figure-controls {
-    gap: 5px;
+  .prose .image-lightbox-picture img {
+    max-width: calc(100vw - 32px);
+    max-height: calc(100dvh - 32px);
   }
-  .figure-controls button,
-  .figure-controls a {
-    min-height: 36px;
-  }
-  .figure-toolbar {
-    padding: 10px;
-    font-size: 10px;
-  }
-  .figure-caption {
-    font-size: 10px;
-    padding: 10px;
+  .prose .image-lightbox-picture.original-size img {
+    max-width: none;
+    max-height: none;
   }
 }
diff --git a/design/verification/plain-image/README.md b/design/verification/plain-image/README.md
new file mode 100644
index 0000000..30f371a
--- /dev/null
+++ b/design/verification/plain-image/README.md
@@ -0,0 +1,12 @@
+# 普通图片交互验收 · 2026-10-27
+
+按用户的两处页面批注，删除架构图上下工具栏、说明条、边框和卡片包装。正文只显示可点击的图片。放大后只显示图片和关闭按钮，支持再次点击图片切换原尺寸、点击空白关闭、Escape关闭并恢复焦点。
+
+- `pnpm lint`、`pnpm typecheck`、`pnpm --filter @endor/docs run build --webpack` 通过。
+- 浏览器检查旧 `.figure-toolbar`、`.figure-caption`、`.figure-controls` 数量为0；正文图片及点击区域计算边框均为0px。
+- 实际验证点击图片打开、点击空白关闭、焦点回到正文图片、再次打开及Escape关闭。
+- 390px手机宽度下正文无横向溢出；原尺寸图片宽2000px，仅在大图滚动区域内滚动，页面仍宽390px。
+- 浏览器error/warn日志为空。
+- `inline.png` 为无框正文图片；`enlarged.png` 为简洁放大效果。
+
+图片数据与Python制图源码未变；README同步移除旧工具栏/下载控件的功能描述。
diff --git a/design/verification/plain-image/enlarged.png b/design/verification/plain-image/enlarged.png
new file mode 100644
index 0000000..86aaef8
Binary files /dev/null and b/design/verification/plain-image/enlarged.png differ
diff --git a/design/verification/plain-image/inline.png b/design/verification/plain-image/inline.png
new file mode 100644
index 0000000..748b10e
Binary files /dev/null and b/design/verification/plain-image/inline.png differ