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+# EN Demo UI i18n Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Make `website/1/en/demo` hardcoded UI English, and make shared JS show zh/en copy from a lightweight `t()` dictionary based on URL language.
+
+**Architecture:** Add `getUiLang()` + `t(key, vars?)` + a zh/en map in `common.js` (exposed on `window`). Replace user-visible Chinese in shared JS with `t()`. Translate EN demo HTML/static strings in place. Leave comments and CMS-bound fields alone.
+
+**Tech Stack:** ThinkPHP theme HTML, shared Vite-built static JS under `public/themes/dist_static/static/js/`, existing URL lang prefix (`/en/...`).
+
+**Spec:** `docs/superpowers/specs/2026-09-07-en-demo-ui-i18n-design.md`
+
+## Global Constraints
+
+- Translate **user-visible hardcoded UI only** (not code comments).
+- Do **not** translate CMS/tag output (`{$vo.title}`, nav titles from backend, etc.).
+- Do **not** modify `website/1/zh/demo/` templates for copy (shared JS only, bilingual).
+- Do **not** translate SVG internal `id="矢量…"` / `id="微信 1"` attributes (not user-visible).
+- Brand in EN UI: **RAYNEN** / **Raynen Technology**.
+- Currency wording in EN: use **Yuan** (e.g. footer unit text).
+- UI lang: first path segment `en` → `en`, else `zh` (same as header EN/CN mapping).
+- Missing `t` key: return zh string if present, else the key; never throw.
+- Verification is **grep + manual smoke** (no PHPUnit/Jest in this theme path).
+
+## File map
+
+| File | Responsibility |
+|------|----------------|
+| `public/themes/dist_static/static/js/common.js` | `getUiLang`, `t`, dictionary, stock delay string via `t` |
+| `video.js` / `search.js` / `about.js` / `announce.js` / `category.js` | Replace hardcoded UI Chinese with `t()` |
+| `earth.js` | Bilingual city names + Fuzhou tooltip |
+| `public/themes/website/1/en/demo/components/*.html` | Header/footer/mask/empty EN chrome |
+| `public/themes/website/1/en/demo/*.html` | Page EN chrome + `lang="en"` + inline script strings |
+
+---
+
+### Task 1: Add `getUiLang` + `t` + base dictionary in `common.js`
+
+**Files:**
+- Modify: `public/themes/dist_static/static/js/common.js`
+- Test: browser console / grep (no unit test harness)
+
+**Interfaces:**
+- Produces:
+  - `getUiLang(): 'en' | 'zh'`
+  - `t(key: string, vars?: Record<string, string|number>): string`
+  - `window.getUiLang`, `window.t` (same functions)
+- Consumes: `location.pathname`; optional `.site-header__lang[data-lang-current]`
+
+- [ ] **Step 1: Insert helper + dictionary near top of the `$(function(){...})` region (after Lenis/AOS init is fine; before stock refresh)**
+
+Add (exact initial keys — extend later if grep finds more):
+
+```javascript
+	const UI_I18N = {
+		zh: {
+			"video.play": "视频播放",
+			"filter.by_product": "按产品筛选",
+			"about.expand_more": "展开更多",
+			"about.collapse": "收起",
+			"brand.short": "睿能科技",
+			"stock.delay_note": "截止 {time}*报价有十五分钟或以上延迟。",
+			"contact.name_required": "请输入姓名",
+			"contact.phone_required": "请输入手机号",
+			"contact.company_required": "请输入公司名称",
+			"contact.email_required": "请输入邮箱",
+			"contact.submitting": "提交中...",
+			"contact.submit": "提交",
+			"contact.success": "提交成功，我们会尽快与您联系！",
+			"contact.fail": "提交失败，请稍后重试",
+			"contact.network_error": "网络错误，请稍后重试",
+			"earth.hq_fuzhou": "全球总部福州",
+			"earth.hq_fuzhou_html": "全球总部<br>福州"
+		},
+		en: {
+			"video.play": "Video",
+			"filter.by_product": "Filter by product",
+			"about.expand_more": "Show more",
+			"about.collapse": "Show less",
+			"brand.short": "RAYNEN",
+			"stock.delay_note": "As of {time}* Quotes delayed by 15 minutes or more.",
+			"contact.name_required": "Please enter your name",
+			"contact.phone_required": "Please enter your phone number",
+			"contact.company_required": "Please enter your company name",
+			"contact.email_required": "Please enter your email",
+			"contact.submitting": "Submitting...",
+			"contact.submit": "Submit",
+			"contact.success": "Submitted successfully. We will contact you soon.",
+			"contact.fail": "Submission failed. Please try again later.",
+			"contact.network_error": "Network error. Please try again later.",
+			"earth.hq_fuzhou": "Global HQ Fuzhou",
+			"earth.hq_fuzhou_html": "Global HQ<br>Fuzhou"
+		}
+	};
+
+	function getUiLang() {
+		const fromHeader = document.querySelector(".site-header__lang")?.getAttribute("data-lang-current");
+		if (fromHeader === "en" || fromHeader === "zh") return fromHeader;
+		const seg = location.pathname.replace(/^\//, "").split("/")[0] || "";
+		return seg === "en" ? "en" : "zh";
+	}
+
+	function t(key, vars) {
+		const lang = getUiLang();
+		const table = UI_I18N[lang] || UI_I18N.zh;
+		let str = table[key] ?? UI_I18N.zh[key] ?? key;
+		if (vars && typeof vars === "object") {
+			Object.keys(vars).forEach((k) => {
+				str = str.replace(new RegExp(`\\{${k}\\}`, "g"), String(vars[k]));
+			});
+		}
+		return str;
+	}
+
+	window.getUiLang = getUiLang;
+	window.t = t;
+```
+
+- [ ] **Step 2: Replace stock delay assignment to use `t`**
+
+Find in `initStockQuoteRefresh` / `applyQuote`:
+
+```javascript
+timeEl.textContent = `截止 ${data.updateTime}*报价有十五分钟或以上延迟。`;
+```
+
+Replace with:
+
+```javascript
+timeEl.textContent = t("stock.delay_note", { time: data.updateTime });
+```
+
+- [ ] **Step 3: Verify helper in browser**
+
+Open `/en/` any page with DevTools:
+
+```javascript
+getUiLang()  // "en"
+t("video.play")  // "Video"
+t("stock.delay_note", { time: "2026-09-07 10:00:00" })
+```
+
+Open a zh page: `getUiLang()` → `"zh"`, `t("video.play")` → `"视频播放"`.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add public/themes/dist_static/static/js/common.js
+git commit -m "feat(i18n): add getUiLang/t dictionary for shared UI strings"
+```
+
+---
+
+### Task 2: Wire shared page JS to `t()`
+
+**Files:**
+- Modify: `public/themes/dist_static/static/js/video.js`
+- Modify: `public/themes/dist_static/static/js/search.js`
+- Modify: `public/themes/dist_static/static/js/about.js`
+- Modify: `public/themes/dist_static/static/js/announce.js`
+- Modify: `public/themes/dist_static/static/js/category.js`
+
+**Interfaces:**
+- Consumes: `window.t` / `t` (common.js loaded first via `import "./common.js"`)
+
+- [ ] **Step 1: Update `video.js`**
+
+Replace `"视频播放"` defaults with `t("video.play")`.  
+Replace `$btn.find("span").text("按产品筛选")` with `t("filter.by_product")`.
+
+- [ ] **Step 2: Update `search.js`**
+
+Replace `"视频播放"` fallbacks with `t("video.play")`.  
+Keep the `/^播放[：:]/` strip for aria-label parsing (works for Chinese CMS labels); if EN aria uses `Play:`, also allow:
+
+```javascript
+card.getAttribute("aria-label")?.replace(/^(播放|Play)\s*[：:]\s*/i, "").trim() || t("video.play")
+```
+
+- [ ] **Step 3: Update `about.js`**
+
+```javascript
+btn.querySelector("span").textContent = expanded ? t("about.collapse") : t("about.expand_more");
+```
+
+- [ ] **Step 4: Update `announce.js`**
+
+```javascript
+$btn.find("span").text(t("filter.by_product"));
+```
+
+- [ ] **Step 5: Update `category.js`**
+
+```javascript
+if (name) document.title = `${name} - ${t("brand.short")}`;
+```
+
+- [ ] **Step 6: Smoke**
+
+- `/en/video.html` (or routed EN video): default modal title English when empty.  
+- `/about` zh: toggle still 展开更多/收起.  
+- `/en/about`: Show more / Show less.
+
+- [ ] **Step 7: Commit**
+
+```bash
+git add public/themes/dist_static/static/js/video.js public/themes/dist_static/static/js/search.js public/themes/dist_static/static/js/about.js public/themes/dist_static/static/js/announce.js public/themes/dist_static/static/js/category.js
+git commit -m "feat(i18n): localize shared page JS UI strings via t()"
+```
+
+---
+
+### Task 3: Localize `earth.js` city names + HQ tooltip
+
+**Files:**
+- Modify: `public/themes/dist_static/static/js/earth.js`
+
+**Interfaces:**
+- Consumes: `getUiLang()`, `t()`
+- Produces: markers whose displayed `name` matches UI lang
+
+- [ ] **Step 1: Change `markersData` entries to bilingual names**
+
+Pattern for each city:
+
+```javascript
+{
+  nameZh: "上海",
+  nameEn: "Shanghai",
+  lat: 31.2304,
+  lon: 121.4737
+},
+```
+
+Full English map (use exactly):
+
+| nameZh | nameEn |
+|--------|--------|
+| 上海 | Shanghai |
+| 东京 | Tokyo |
+| 伊斯坦布尔 | Istanbul |
+| 伦敦 | London |
+| 加尔各答 | Kolkata |
+| 北京 | Beijing |
+| 华沙 | Warsaw |
+| 南京 | Nanjing |
+| 吉隆坡 | Kuala Lumpur |
+| 圣保罗 | São Paulo |
+| 圣安东尼奥 | San Antonio |
+| 墨西哥城 | Mexico City |
+| 多伦多 | Toronto |
+| 奥克兰 | Auckland |
+| 孟买 | Mumbai |
+| 安地比斯 | (keep transliteration from existing intent; if unclear use original pinyin/English already known — **Antananarivo** only if that was the city; otherwise keep a clear English label matching lat/lon) |
+| 山景城 | Mountain View |
+| 巴黎 | Paris |
+| 布宜诺斯艾利斯 | Buenos Aires |
+| 开普敦 | Cape Town |
+| 悉尼 | Sydney |
+| 新加坡 | Singapore |
+| 新德里 | New Delhi |
+| 曼谷 | Bangkok |
+| 法兰克福 | Frankfurt |
+| 波哥大 | Bogotá |
+| 深圳 | Shenzhen |
+| 牛津 | Oxford |
+| 特拉维夫 | Tel Aviv |
+| 科伦坡 | Colombo |
+| 米兰 | Milan |
+| 纽约 | New York |
+| 莫斯科 | Moscow |
+| 达卡 | Dhaka |
+| 迪拜 | Dubai |
+| 邦加罗尔 | Bengaluru |
+| 金奈 | Chennai |
+| 雅加达 | Jakarta |
+| 首尔 | Seoul |
+| 香港 | Hong Kong |
+| 全球总部福州 | Global HQ Fuzhou |
+
+If “安地比斯” coordinates are unclear, keep `nameEn` as a reasonable English label and do not invent a wrong city.
+
+- [ ] **Step 2: Resolve display name when creating markers**
+
+Replace `data.name` usage:
+
+```javascript
+function markerName(data) {
+  return getUiLang() === "en" ? (data.nameEn || data.nameZh) : (data.nameZh || data.nameEn);
+}
+```
+
+Update:
+
+- `if (data.name === "全球总部福州")` → `if (data.nameZh === "全球总部福州")`
+- `marker.userData = { name: markerName(data) };`
+- `fuzhouTooltip.innerHTML = t("earth.hq_fuzhou_html");`
+
+Ensure `earth.js` runs after `common.js` on pages that load both (home/about already modulepreload common via page entry). If `earth.js` is a standalone module without import, add at top of its runtime:
+
+```javascript
+const getUiLang = window.getUiLang || (() => (location.pathname.split("/")[1] === "en" ? "en" : "zh"));
+const t = window.t || ((k) => k);
+```
+
+- [ ] **Step 3: Smoke**
+
+- `/en/` home or about: hover marker → English city name; Fuzhou tooltip English.  
+- zh home: Chinese names unchanged.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add public/themes/dist_static/static/js/earth.js
+git commit -m "feat(i18n): bilingual earth marker city names"
+```
+
+---
+
+### Task 4: Translate EN shared components (header / footer / mask / empty)
+
+**Files:**
+- Modify: `public/themes/website/1/en/demo/components/header.html`
+- Modify: `public/themes/website/1/en/demo/components/footer.html`
+- Modify: `public/themes/website/1/en/demo/components/mask.html`
+- Modify: `public/themes/website/1/en/demo/components/empty.html`
+
+- [ ] **Step 1: Translate user-visible hardcoded strings**
+
+Examples (apply consistently; leave PHP comments Chinese):
+
+- `aria-label="社交账号"` → `Social accounts`
+- `aria-label="微信"` → `WeChat` (popup caption `官方微信` → `Official WeChat`)
+- `aria-label="抖音"` → `Douyin` (or TikTok if product prefers — use **Douyin**)
+- `微博` → `Weibo`; `知乎` → `Zhihu`
+- `切换语言` → `Switch language`
+- `主导航` / `移动导航` → `Main navigation` / `Mobile navigation`
+- `搜索` → `Search`; `关闭导航菜单` → `Close menu`
+- `展开/收起` → `Expand/collapse`
+- Logo `aria-label` / `alt`: `RAYNEN` or `RAYNEN Technology` (drop Chinese in EN alt)
+- Footer: `股票代码` → `Stock code`; `关注我们：` → `Follow us:`; `官方微信` → `Official WeChat`; `官方视频号` → `Official Channels`; `版权所有` → `All rights reserved`; `网站地图` → `Sitemap`; `隐私声明` → `Privacy Policy`
+- Footer unit `元` → `Yuan`
+- Promo hardcoded `了解睿能最新展会信息` → `Learn about RAYNEN’s latest events` (only if hardcoded, not from CMS)
+- Hardcoded `解决方案` label if not from `$vo.title` → `Solutions`
+
+Do **not** change `{hcTaglib:nav}` titles.
+
+- [ ] **Step 2: Grep components for leftover visible Chinese**
+
+```bash
+rg -n "[\p{Han}]" public/themes/website/1/en/demo/components --glob "*.html"
+```
+
+Ignore: comments, SVG ids, PHP comments, CMS echoes.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add public/themes/website/1/en/demo/components
+git commit -m "feat(i18n): English copy for EN demo header/footer/mask/empty"
+```
+
+---
+
+### Task 5: Translate EN page templates + set `lang="en"`
+
+**Files:**
+- Modify all under `public/themes/website/1/en/demo/*.html` that still have `lang="zh-CN"` or hardcoded Chinese UI
+
+Pages: `single_index`, `contact`, `product`, `about`, `investment`, `solution`, `solution2`, `news`, `news-detail`, `search`, `single_search`, `download`, `faq`, `video`, `announce`, `category`
+
+- [ ] **Step 1: Batch fix `html` lang**
+
+Replace on every EN demo page:
+
+```html
+<html lang="zh-CN">
+```
+
+→
+
+```html
+<html lang="en">
+```
+
+- [ ] **Step 2: Translate page chrome (common patterns)**
+
+Apply across pages where hardcoded:
+
+| zh | en |
+|----|----|
+| 探索更多 | Explore more |
+| 立即下载 | Download |
+| 请输入您想了解的内容 | Search what you want to know |
+| 请输入您想下载的文件 | Search files to download |
+| 请输入您想搜索问题的关键词 | Search FAQ keywords |
+| 请输入您想搜索视频的关键词 | Search video keywords |
+| 暂无相关资料 / 问题 / 视频 | No matching resources / FAQs / videos |
+| 视频播放 | Video |
+| 了解产品 | Learn more |
+| 资料下载 | Downloads |
+| 股票信息 / 股票代码 | Stock information / Stock code |
+| 最高（元）等 metrics | High (Yuan), Low (Yuan), Volume (10k lots), Turnover (CNY 10k) — keep units clear |
+| 客服热线 | Hotline |
+| 下载中心 / 常见问题 / 视频教程 / 产品公告 | Download Center / FAQ / Video Tutorials / Product Notices |
+| Contact form labels/placeholders/options/submit | Natural EN (Name, Phone, Company, Email, Industry, Business type, …) |
+
+`contact.html` select **options**: translate both visible text and `value` to English in the EN template only (EN form posts English values).
+
+- [ ] **Step 3: Translate `contact.html` inline script strings via `window.t`**
+
+```javascript
+if (!name) { alert(t("contact.name_required")); return; }
+if (!phone) { alert(t("contact.phone_required")); return; }
+if (!company) { alert(t("contact.company_required")); return; }
+if (!email) { alert(t("contact.email_required")); return; }
+// ...
+$submitBtn.prop("disabled", true).text(t("contact.submitting"));
+// success:
+showFormToast(t("contact.success"));
+// fail:
+alert(res.msg || t("contact.fail"));
+// network:
+alert(t("contact.network_error"));
+// complete:
+$submitBtn.prop("disabled", false).text(t("contact.submit"));
+```
+
+Leave Chinese comments in that script untouched.
+
+- [ ] **Step 4: Grep EN demo pages**
+
+```bash
+rg -n "[\p{Han}]" public/themes/website/1/en/demo --glob "*.html"
+```
+
+Triage each hit: comment / SVG id / CMS / must-fix UI.
+
+- [ ] **Step 5: Smoke checklist**
+
+- `/en/contact.html`: form UI English; validation English.  
+- `/en/download.html`: placeholders + Download.  
+- `/en/` home: Explore more buttons English.  
+- `/en/investment.html`: stock section labels English; delay note English after refresh.  
+- zh contact still Chinese.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add public/themes/website/1/en/demo
+git commit -m "feat(i18n): English UI copy for EN demo pages"
+```
+
+---
+
+### Task 6: Final acceptance sweep
+
+**Files:** none new (verification only)
+
+- [ ] **Step 1: Shared JS user-string grep**
+
+```bash
+rg -n "[\p{Han}]" public/themes/dist_static/static/js --glob "*.js"
+```
+
+Allowed leftovers: comments only; earth `nameZh` fields; dictionary `zh` entries in `common.js`.
+
+- [ ] **Step 2: Confirm zh site not broken**
+
+Spot-check zh home, about expand, video modal, footer stock note → Chinese.
+
+- [ ] **Step 3: Confirm EN site**
+
+Spot-check EN home, contact, investment, about earth tooltips → English chrome.
+
+- [ ] **Step 4: Commit only if tiny fixes were needed; otherwise done**
+
+```bash
+git status
+# if fixups:
+git add -u
+git commit -m "fix(i18n): leftover EN demo UI strings"
+```
+
+---
+
+## Spec coverage check
+
+| Spec requirement | Task |
+|------------------|------|
+| EN demo hardcoded UI → English | 4, 5 |
+| Shared JS bilingual via dictionary | 1, 2 |
+| earth city names | 3 |
+| Comments not translated | Global + all tasks |
+| CMS fields untouched | Global |
+| `html lang=en` | 5 |
+| `getUiLang` / URL `en` prefix | 1 |
+| Stock delay note i18n | 1 |
+| Contact inline alerts | 5 |
+| Acceptance grep/smoke | 6 |
+
+## Placeholder scan
+
+No TBD/TODO steps; commands and key tables are concrete.