feat(frontend): 完善主题导入与手帐工作区并修复 Mermaid 预览

frontend/src/features/editor/VisualMarkdownEditor.vue

@@ -9,6 +9,8 @@ import { indentWithTab } from '@codemirror/commands'
 import { shikiEditorTheme, shikiLanguages, renderCodeLanguage } from './shikiCodeMirror'
 import './language-icons.css'
 import { installLanguagePickerPopover } from './languagePickerPopover'
+import { installCodeBlockLabels } from './codeBlockLabels'
+import { createMermaidPreview } from './mermaidPreview'
 import {
   createCodeBlockCommand,
   toggleEmphasisCommand,
@@ -41,6 +43,7 @@ const loading = ref(true)
 const fontSizeInput = ref(16)
 let crepe: Crepe | null = null
 let disposeLanguagePicker: (() => void) | undefined
+let disposeCodeLabels: (() => void) | undefined
 
 function applyProofingPreferences() {
   const editable = editorRoot.value?.querySelector<HTMLElement>('.ProseMirror')
@@ -125,7 +128,9 @@ onMounted(async () => {
     featureConfigs: {
       [Crepe.Feature.Placeholder]: { text: t('开始记录你的想法…', 'Start writing your thoughts…') },
       [Crepe.Feature.CodeMirror]: {
-        previewOnlyByDefault: false,
+        previewOnlyByDefault: true,
+        previewToggleText: previewOnly => previewOnly ? t('编辑', 'Edit') : t('预览', 'Preview'),
+        previewLabel: t('图表预览', 'Preview'),
         searchPlaceholder: t('搜索语言', 'Search languages'),
         noResultText: t('没有匹配的语言', 'No matching language'),
         copyText: t('复制', 'Copy'),
@@ -182,6 +187,9 @@ onMounted(async () => {
     ...config,
     languages: shikiLanguages(themeStore.resolvedCodeBlockTheme),
     renderLanguage: renderCodeLanguage,
+    renderPreview: (language, content, applyPreview) => language.trim().toLowerCase() === 'mermaid'
+      ? createMermaidPreview(content, themeStore.isDark, applyPreview)
+      : config.renderPreview(language, content, applyPreview),
     extensions: [basicSetup, keymap.of([indentWithTab]), shikiEditorTheme(themeStore.resolvedCodeBlockTheme)],
   })))
   crepe.editor.use(fontSizeMarkdownPlugin)
@@ -195,13 +203,14 @@ onMounted(async () => {
   })
   await crepe.create()
   if (editorRoot.value) disposeLanguagePicker = installLanguagePickerPopover(editorRoot.value)
+  if (editorRoot.value) disposeCodeLabels = installCodeBlockLabels(editorRoot.value)
   applyProofingPreferences()
   loading.value = false
 })
 
 watch([() => settingsStore.spellCheck, () => settingsStore.language], applyProofingPreferences)
 
-onBeforeUnmount(() => { disposeLanguagePicker?.(); void crepe?.destroy() })
+onBeforeUnmount(() => { disposeCodeLabels?.(); disposeLanguagePicker?.(); void crepe?.destroy() })
 
 defineExpose({ getEditor: () => crepe?.editor })
 </script>
@@ -273,6 +282,9 @@ defineExpose({ getEditor: () => crepe?.editor })
 .toolbar-divider { width: 1px; height: 20px; margin: 0 var(--space-xs); background: var(--color-border-default); }
 .milkdown-host { flex: 1; min-height: 0; overflow: auto; color: var(--color-text-primary); }
 .milkdown-host.loading { visibility: hidden; }
+.milkdown-host :deep(.editor-mermaid-preview) { padding: 20px; overflow: auto; background: var(--color-surface-primary); color: var(--color-text-primary); }
+.milkdown-host :deep(.editor-mermaid-preview svg) { display: block; max-width: 100%; height: auto; margin: auto; }
+.milkdown-host :deep(.editor-mermaid-preview.has-error) { color: var(--color-error); white-space: pre-wrap; }
 .editor-loading { padding: var(--space-xl); color: var(--color-text-tertiary); }
 .milkdown-host :deep(.milkdown) {
   min-height: 100%;

frontend/src/features/editor/codeBlockLabels.spec.ts

@@ -0,0 +1,18 @@
+// @vitest-environment happy-dom
+import { expect, it } from 'vitest'
+import { installCodeBlockLabels } from './codeBlockLabels'
+
+it('keeps footer labels in sync when the language changes and stops after disposal', async () => {
+  const root = document.createElement('div')
+  root.innerHTML = '<div class="milkdown-code-block"><button class="language-button">Python</button></div>'
+  const dispose = installCodeBlockLabels(root)
+  const block = root.firstElementChild as HTMLElement
+  expect(block.dataset.languageLabel).toBe('Python')
+  block.querySelector('button')!.textContent = 'TypeScript'
+  await new Promise(resolve => setTimeout(resolve, 0))
+  expect(block.dataset.languageLabel).toBe('TypeScript')
+  dispose()
+  block.querySelector('button')!.textContent = 'Rust'
+  await new Promise(resolve => setTimeout(resolve, 0))
+  expect(block.dataset.languageLabel).toBe('TypeScript')
+})

frontend/src/features/editor/codeBlockLabels.ts

@@ -0,0 +1,11 @@
+/** Mirror the live picker label for theme decorations without changing Markdown. */
+export function installCodeBlockLabels(root: HTMLElement): () => void {
+  const sync = () => root.querySelectorAll<HTMLElement>('.milkdown-code-block').forEach(block => {
+    const label = block.querySelector('.language-button')?.textContent?.trim() || 'Plain text'
+    if (block.dataset.languageLabel !== label) block.dataset.languageLabel = label
+  })
+  const observer = new MutationObserver(sync)
+  observer.observe(root, { subtree: true, childList: true, characterData: true })
+  sync()
+  return () => observer.disconnect()
+}

frontend/src/features/editor/mermaidPreview.spec.ts

@@ -0,0 +1,37 @@
+// @vitest-environment happy-dom
+import { expect, it, vi } from 'vitest'
+import { flushPromises } from '@vue/test-utils'
+import { renderMermaid } from '@/services/mermaidService'
+import { createMermaidPreview } from './mermaidPreview'
+
+vi.mock('@/services/mermaidService', () => ({ renderMermaid: vi.fn() }))
+
+it('renders SVG with the requested theme and keeps async revisions isolated', async () => {
+  let finish!: (value: any) => void
+  vi.mocked(renderMermaid).mockImplementationOnce(() => new Promise(resolve => { finish = resolve }))
+  vi.mocked(renderMermaid).mockResolvedValueOnce({ svg: '<svg><text>new</text></svg>', warnings: [], width: 10, height: 10 })
+  const oldPublish = vi.fn()
+  const latestPublish = vi.fn()
+  const old = createMermaidPreview('graph TD; A-->B', false, oldPublish)
+  const latest = createMermaidPreview('graph TD; A-->C', true, latestPublish)
+  document.body.append(latest.cloneNode(true))
+  await flushPromises()
+  finish({ svg: '<svg><text>old</text></svg>', warnings: [] })
+  await flushPromises()
+  expect(latest.querySelector('svg')?.textContent).toBe('new')
+  expect(old.querySelector('svg')?.textContent).toBe('old')
+  expect(oldPublish).not.toHaveBeenCalled()
+  expect(latestPublish).toHaveBeenCalledWith(latest)
+  expect(latestPublish.mock.calls[0]![0]).not.toBe(latest)
+  document.getElementById(latest.id)?.remove()
+  expect(renderMermaid).toHaveBeenLastCalledWith('graph TD; A-->C', { theme: 'dark' })
+})
+
+it('shows syntax errors as text without executing markup', async () => {
+  vi.mocked(renderMermaid).mockResolvedValueOnce({ svg: '', warnings: ['<img src=x onerror=alert(1)>'], width: 0, height: 0 })
+  const preview = createMermaidPreview('invalid', false, vi.fn())
+  await flushPromises()
+  expect(preview.classList.contains('has-error')).toBe(true)
+  expect(preview.querySelector('img')).toBeNull()
+  expect(preview.textContent).toContain('点击编辑')
+})

frontend/src/features/editor/mermaidPreview.ts

@@ -0,0 +1,39 @@
+import { nextTick } from 'vue'
+import { renderMermaid } from '@/services/mermaidService'
+import { t } from '@/i18n'
+
+let previewId = 0
+export function createMermaidPreview(source: string, dark: boolean, applyPreview: (value: HTMLElement) => void): HTMLElement {
+  // Each revision owns its element, so a slow render cannot replace newer content.
+  const container = document.createElement('div')
+  container.className = 'editor-mermaid-preview'
+  container.id = `editor-mermaid-preview-${++previewId}`
+  container.setAttribute('aria-live', 'polite')
+  container.textContent = t('正在渲染图表…', 'Rendering diagram…')
+  const publish = async () => {
+    await nextTick()
+    // Milkdown sanitizes and copies this element. Publish only if its revision
+    // still exists; edits, language changes and unmounts remove the old marker.
+    const visible = document.getElementById(container.id)
+    if (visible) {
+      // PreviewPanel copies HTML instead of retaining the supplied element.
+      // Update the current copy through Milkdown's reactive callback.
+      applyPreview(container.cloneNode(true) as HTMLElement)
+    }
+  }
+  void renderMermaid(source, { theme: dark ? 'dark' : 'light' }).then(result => {
+    if (result.warnings.length) {
+      container.classList.add('has-error')
+      container.textContent = `${t('图表语法有误，可点击编辑修改：', 'Diagram syntax error. Choose Edit to fix:')} ${result.warnings.join('\n')}`
+      void publish()
+      return
+    }
+    // Mermaid runs in strict mode; Milkdown sanitizes the preview before insertion.
+    container.innerHTML = result.svg
+    void publish()
+  }).catch(() => {
+    container.textContent = t('图表渲染失败，请点击编辑检查源码。', 'Unable to render diagram. Choose Edit to inspect the source.')
+    void publish()
+  })
+  return container
+}

frontend/src/features/themes/CommunityThemePreview.vue

@@ -16,10 +16,15 @@ const previewDocument = computed(() => {
   style.textContent = `${tokensCss}\n${getCommunityThemePreviewCss(props.themeId)}\nbody { margin:0; padding:24px; background:var(--color-background-primary); color:var(--color-text-primary); font:16px/1.6 system-ui; } article { padding:20px; border:1px solid var(--color-border-default); border-radius:8px; background:var(--color-surface-primary); } p { color:var(--color-text-secondary); } button { padding:8px 16px; border:0; border-radius:6px; background:var(--color-accent-primary); color:white; }`
   doc.head.append(style)
   const article = doc.createElement('article')
+  article.className = 'panel'
+  const header = doc.createElement('header'); header.className = 'feature-header'
   const heading = doc.createElement('h1'); heading.textContent = theme.value?.name ?? props.themeId
+  header.append(heading)
+  const journal = doc.createElement('section'); journal.className = 'editor-preview'; journal.style.cssText = 'padding:24px;margin:28px 0;'
   const text = doc.createElement('p'); text.textContent = t('知识的价值不只在于保存，更在于被重新发现和使用。', 'Knowledge gains value when it can be rediscovered and used.')
   const button = doc.createElement('button'); button.textContent = t('示例按钮', 'Example button')
-  article.append(heading, text, button); doc.body.append(article)
+  journal.append(text)
+  article.append(header, journal, button); doc.body.append(article)
   return '<!doctype html>' + doc.documentElement.outerHTML
 })
 </script>

frontend/src/features/themes/ThemesView.spec.ts

@@ -5,10 +5,62 @@ import { createPinia, setActivePinia } from 'pinia'
 import ThemesView from './ThemesView.vue'
 import { useThemeStore } from '@/stores/theme'
 import { mockCommunityThemes, getCommunityThemePreviewCss } from '@/services/themePackageService'
+import paperPackage from '@/assets/themes/paper-moments.theme?raw'
 
 let wrapper: VueWrapper
 beforeEach(() => { localStorage.clear(); setActivePinia(createPinia()) })
-afterEach(() => { wrapper?.unmount(); vi.useRealTimers() })
+afterEach(() => { useThemeStore().applyTheme('light'); wrapper?.unmount(); vi.restoreAllMocks(); vi.unstubAllGlobals(); vi.useRealTimers() })
+
+it('downloads a URL for inspection without automatically installing it', async () => {
+  vi.stubGlobal('fetch', vi.fn().mockResolvedValue(new Response(paperPackage)))
+  wrapper = mount(ThemesView, { global: { stubs: { MarkdownContent: true } } })
+  await flushPromises()
+  await wrapper.findAll('button').find(button => button.text() === '导入主题')!.trigger('click')
+  await wrapper.get('#theme-package-url').setValue('https://example.com/paper.theme')
+  await wrapper.get('.url-import').trigger('submit')
+  await vi.waitFor(() => expect(useThemeStore().pendingInspection?.compatible).toBe(true))
+  expect(useThemeStore().isThemeInstalled('paper-moments')).toBe(false)
+  expect(wrapper.get('.inspection-result').text()).toContain('纸间时光')
+})
+
+it('ignores a URL response after the dialog is cancelled', async () => {
+  let respond!: (response: Response) => void
+  vi.stubGlobal('fetch', vi.fn(() => new Promise(resolve => { respond = resolve })))
+  wrapper = mount(ThemesView, { global: { stubs: { MarkdownContent: true } } })
+  await flushPromises()
+  await wrapper.findAll('button').find(button => button.text() === '导入主题')!.trigger('click')
+  await wrapper.get('#theme-package-url').setValue('https://example.com/paper.theme')
+  await wrapper.get('.url-import').trigger('submit')
+  await wrapper.get('.import-modal .inline-actions button').trigger('click')
+  respond(new Response(paperPackage))
+  await flushPromises()
+  expect(useThemeStore().pendingInspection).toBeNull()
+  expect(wrapper.find('.import-modal').exists()).toBe(false)
+})
+
+it('opens the file picker from the styled button and imports the actual paper theme', async () => {
+  const store = useThemeStore()
+  wrapper = mount(ThemesView, { global: { stubs: { MarkdownContent: true } } })
+  await flushPromises()
+  await wrapper.findAll('button').find(button => button.text() === '导入主题')!.trigger('click')
+  const input = wrapper.get<HTMLInputElement>('input[type="file"]')
+  const click = vi.spyOn(input.element, 'click').mockImplementation(() => {})
+  await wrapper.get('.upload-area .button-primary').trigger('click')
+  expect(click).toHaveBeenCalledOnce()
+  Object.defineProperty(input.element, 'files', { value: [new File([paperPackage], 'paper-moments.theme', { type: 'text/plain' })] })
+  await input.trigger('change')
+  await vi.waitFor(() => expect(store.pendingInspection?.compatible).toBe(true))
+  expect(store.pendingInspection!.warnings).toEqual([])
+  await wrapper.get('.import-modal .inline-actions .button-primary').trigger('click')
+  await flushPromises()
+  expect(store.isThemeInstalled('paper-moments')).toBe(true)
+  expect(localStorage.getItem('installed-themes-css-paper-moments')).toBe(getCommunityThemePreviewCss('paper-moments'))
+  expect(document.getElementById('theme-style-paper-moments')).toBeNull()
+  store.applyTheme('paper-moments')
+  expect(document.getElementById('theme-style-paper-moments')!.textContent).toBe(getCommunityThemePreviewCss('paper-moments'))
+  store.applyTheme('light')
+  expect(document.getElementById('theme-style-paper-moments')).toBeNull()
+})
 
 it.each(mockCommunityThemes)('previews uninstalled $theme_id using its actual CSS without changing the active theme', async theme => {
   const store = useThemeStore()

frontend/src/features/themes/ThemesView.vue

@@ -1,19 +1,58 @@
 <script setup lang="ts">
-import { computed, onMounted, ref } from 'vue'
+import { computed, onMounted, onBeforeUnmount, ref } from 'vue'
 import MarkdownContent from '@/components/common/MarkdownContent.vue'
 import { useThemeStore } from '@/stores/theme'
-import { mockCommunityThemes } from '@/services/themePackageService'
+import { mockCommunityThemes, decodeThemePackage, fetchThemePackage, inspectThemePackage, MAX_THEME_BYTES } from '@/services/themePackageService'
 import type { ThemePackageInspection } from '@/contracts'
 import { t } from '@/i18n'
 import CommunityThemePreview from './CommunityThemePreview.vue'
+import paperMomentsUrl from '@/assets/themes/paper-moments.theme?url'
 
 const themeStore = useThemeStore()
 
 const activeTab = ref<'installed' | 'community'>('installed')
 const showImportDialog = ref(false)
+const fileInput = ref<HTMLInputElement | null>(null)
 const previewThemeId = ref<string | null>(null)
 const communityPreviewId = ref<string | null>(null)
 const actionError = ref('')
+const importUrl = ref('')
+const importing = ref(false)
+let importGeneration = 0
+let downloadController: AbortController | undefined
+
+function resetImport() {
+  importGeneration++
+  downloadController?.abort()
+  importing.value = false
+  themeStore.pendingInspection = null
+  themeStore.importError = null
+  actionError.value = ''
+}
+function closeImport() { resetImport(); showImportDialog.value = false }
+function openImport() { resetImport(); showImportDialog.value = true }
+onBeforeUnmount(resetImport)
+
+async function importPackage(load: () => Promise<string>) {
+  resetImport()
+  const generation = importGeneration
+  importing.value = true
+  try {
+    const result = await inspectThemePackage(await load())
+    if (generation !== importGeneration) return
+    themeStore.pendingInspection = result
+    if (!result.compatible) actionError.value = result.warnings[0] ?? '主题包无法解析'
+  } catch (error) {
+    if (generation === importGeneration) actionError.value = error instanceof Error ? error.message : '导入失败'
+  } finally { if (generation === importGeneration) importing.value = false }
+}
+
+function importFromUrl() {
+  void importPackage(() => {
+    downloadController = new AbortController()
+    return fetchThemePackage(importUrl.value, downloadController.signal)
+  })
+}
 
 const shikiPreview = `\`\`\`typescript
 const notes = await search('本地优先')
@@ -30,23 +69,16 @@ function handleFileImport(event: Event) {
   const file = input.files?.[0]
   input.value = ''
   if (!file) return
-  actionError.value = ''
-  const reader = new FileReader()
-  reader.onload = async () => {
-    try {
-      const result = await themeStore.inspectThemePackage(String(reader.result ?? ''))
-      if (result.compatible) {
-        previewThemeId.value = result.manifest.theme_id
-      } else {
-        actionError.value = result.warnings[0] ?? '主题包无法解析'
-      }
-    } catch (error) {
-      actionError.value = error instanceof Error ? error.message : '导入失败'
-    }
-  }
-  reader.onerror = () => { actionError.value = '文件读取失败' }
-  // 主题包是文本格式（YAML 清单 + --- + CSS），二进制包在解析阶段会被拒绝。
-  reader.readAsText(file)
+  void importPackage(async () => {
+    if (file.size > MAX_THEME_BYTES) throw new Error('主题包不能超过 5 MB')
+    const bytes = await new Promise<ArrayBuffer>((resolve, reject) => {
+      const reader = new FileReader()
+      reader.onload = () => resolve(reader.result as ArrayBuffer)
+      reader.onerror = () => reject(new Error('文件读取失败'))
+      reader.readAsArrayBuffer(file)
+    })
+    return decodeThemePackage(new Uint8Array(bytes))
+  })
 }
 
 async function confirmInstall(inspection: ThemePackageInspection) {
@@ -90,7 +122,7 @@ onMounted(() => {
         <p>浏览、导入和管理主题，打造你的知识工作流。</p>
       </div>
       <div class="inline-actions">
-        <button class="button-secondary" @click="showImportDialog = true">导入主题</button>
+        <button class="button-secondary" @click="openImport">导入主题</button>
         <button class="button-secondary" @click="themeStore.resetToDefault()">{{ t('恢复默认', 'Reset defaults') }}</button>
       </div>
     </header>
@@ -124,7 +156,7 @@ onMounted(() => {
         :class="{ selected: themeStore.currentThemeId === theme.theme_id }"
         @click="themeStore.applyTheme(theme.theme_id)"
       >
-        <div class="theme-preview" :class="theme.is_dark ? 'preview-dark' : (theme.theme_id === 'sepia' ? 'preview-sepia' : 'preview-light')">
+        <div class="theme-preview" :class="theme.theme_id === 'paper-moments' ? 'preview-paper' : theme.is_dark ? 'preview-dark' : (theme.theme_id === 'sepia' ? 'preview-sepia' : 'preview-light')">
           <span></span><span></span><span></span><div></div>
         </div>
         <div class="theme-info">
@@ -150,7 +182,7 @@ onMounted(() => {
         :key="theme.theme_id"
         class="item-card theme-card"
       >
-        <div class="theme-preview" :class="theme.is_dark ? 'preview-dark' : 'preview-light'">
+        <div class="theme-preview" :class="theme.theme_id === 'paper-moments' ? 'preview-paper' : theme.is_dark ? 'preview-dark' : 'preview-light'">
           <span></span><span></span><span></span><div></div>
         </div>
         <div class="theme-info">
@@ -165,14 +197,15 @@ onMounted(() => {
           <span v-for="tag in theme.tags" :key="tag" class="tag">{{ tag }}</span>
         </div>
         <div class="theme-actions">
+          <a v-if="theme.theme_id === 'paper-moments'" class="button-secondary small" :href="paperMomentsUrl" download="paper-moments.theme">下载主题包</a>
           <button
-            v-if="themeStore.isThemeInstalled(theme.theme_id)"
+            v-if="themeStore.allThemes.some(installed => installed.theme_id === theme.theme_id && installed.version === theme.version)"
             class="button-secondary small"
             @click="themeStore.applyTheme(theme.theme_id)"
           >启用</button>
           <template v-else>
             <button class="button-secondary small" @click="previewCommunity(theme.theme_id)">预览</button>
-            <button class="button-primary small" @click="installFromCommunity(theme.theme_id)">安装</button>
+            <button class="button-primary small" @click="installFromCommunity(theme.theme_id)">{{ themeStore.isThemeInstalled(theme.theme_id) ? '更新' : '安装' }}</button>
           </template>
         </div>
       </article>
@@ -193,11 +226,12 @@ onMounted(() => {
       </div>
     </div>
 
-    <div v-if="showImportDialog" class="modal-backdrop" @click.self="showImportDialog = false">
+    <div v-if="showImportDialog" class="modal-backdrop" @click.self="closeImport">
       <div class="modal import-modal">
         <span class="badge info">主题导入</span>
         <h2>导入主题包</h2>
-        <p class="subtle">单文件主题包：YAML 清单 + 一行 <code>---</code> + 主题 CSS。安装前会校验清单与 CSS 安全性。</p>
+        <p class="subtle">选择本地文件或粘贴主题包直链。支持单文件主题与 ZIP，安装前会校验清单和 CSS。</p>
+        <p v-if="actionError" class="error-banner" role="alert">{{ actionError }}</p>
 
         <div v-if="themeStore.pendingInspection?.compatible" class="inspection-result">
           <div class="inspect-head">
@@ -222,13 +256,21 @@ onMounted(() => {
         </div>
 
         <div v-else class="upload-area">
-          <input type="file" accept=".yaml,.yml,.theme" @change="handleFileImport" />
-          <p>点击选择主题包文件</p>
-          <p class="subtle">支持 .yaml / .yml / .theme；ZIP 需要 Host 端解压，暂不支持。</p>
+          <input ref="fileInput" class="theme-file-input" type="file" accept=".yaml,.yml,.theme,.zip" tabindex="-1" aria-label="主题包文件" @change="handleFileImport" />
+          <button type="button" class="button-primary" :disabled="importing" @click="fileInput?.click()">选择主题包文件</button>
+          <p>从本地导入你喜欢的主题</p>
+          <p class="subtle">支持 .yaml / .yml / .theme / .zip，最大 5 MB。</p>
+          <form class="url-import" @submit.prevent="importFromUrl">
+            <label for="theme-package-url">从 URL 导入</label>
+            <input id="theme-package-url" v-model="importUrl" class="input" type="url" required placeholder="https://example.com/theme.zip" :disabled="importing" />
+            <button class="button-secondary" type="submit" :disabled="importing">{{ importing ? '正在读取…' : '下载并校验' }}</button>
+            <p class="subtle">请使用文件直链；远程服务器需允许跨域访问。</p>
+          </form>
         </div>
 
         <div class="inline-actions">
-          <button class="button-secondary" @click="showImportDialog = false">取消</button>
+          <button v-if="themeStore.pendingInspection?.compatible" class="button-secondary" @click="resetImport">重新选择</button>
+          <button class="button-secondary" @click="closeImport">取消</button>
           <button
             v-if="themeStore.pendingInspection?.compatible"
             class="button-primary"
@@ -262,9 +304,16 @@ onMounted(() => {
 .preview-sepia { background: #fbf3df; border-color: #ddcfad; }
 .preview-sepia span { background: #d8c69c; }
 .preview-sepia div { background: #f4e8ca; }
+.preview-paper { background: #fffdf5; border: 1px dashed #8b7865; box-shadow: 3px 3px 0 #d8e6e2, 6px 6px 0 #f0d8cf; }
+.preview-paper span { background: #efd8d0; }
+.preview-paper span:nth-child(2) { background: #d8e7e8; }
+.preview-paper span:nth-child(3) { background: #f6e9b8; }
+.preview-paper div { border: 1px solid #b5a693; background: repeating-linear-gradient(#fffef8 0 14px, #dce4db 14px 15px); }
+.theme-actions a { text-decoration: none; }
 
 .theme-info { display: flex; justify-content: space-between; gap: var(--space-md); align-items: flex-start; }
 .theme-info strong { display: block; margin-bottom: 2px; }
+.theme-info > .badge { flex-shrink: 0; white-space: nowrap; }
 
 .theme-tags { display: flex; flex-wrap: wrap; gap: 4px; }
 .tag {
@@ -347,10 +396,10 @@ onMounted(() => {
   transition: border-color var(--motion-fast);
 }
 .upload-area:hover { border-color: var(--color-accent-secondary); }
-.upload-area input {
-  display: block;
-  margin: 0 auto var(--space-md);
-}
+.url-import { display: grid; gap: 10px; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--color-border-default); text-align: left; }
+.url-import .input { width: 100%; min-width: 0; }
+.upload-area .theme-file-input { display: none; }
+.upload-area > button { margin-bottom: var(--space-md); }
 .upload-area p { color: var(--color-text-secondary); }
 
 .inspection-result {