diff --git a/webnode/README.md b/webnode/README.md
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--- /dev/null
+++ b/webnode/README.md
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+# Episode Web Viewer (Node.js)
+
+A simple Express.js web application to view translated episodes with speaker color coding.
+
+## Features
+
+Same as the Python/Flask version:
+- Mobile-first design
+- Vertical line display with selectable lines
+- Translation toggle (Chinese shown in expanded card)
+- Speaker colors from `_colors.json`
+- Episode navigation via side menu
+- Server-side rendering with EJS templates
+
+## Running the App
+
+```bash
+# From webnode folder
+./run.sh
+
+# Or manually:
+npm install
+npm start
+
+# Development mode (auto-reload on Node 18+):
+npm run dev
+```
+
+Then open http://localhost:5000
+
+## Project Structure
+
+```
+webnode/
+├── server.js          # Express server
+├── package.json       # Node dependencies
+├── run.sh             # Run script
+├── views/
+│   └── episode.ejs    # EJS template
+└── public/
+    └── style.css      # Styles
+```
+
+## Dependencies
+
+- **express**: Web framework
+- **ejs**: Templating engine
diff --git a/webnode/package.json b/webnode/package.json
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+++ b/webnode/package.json
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+{
+  "name": "episode-web-viewer",
+  "version": "1.0.0",
+  "description": "Simple web viewer for translated episodes",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node --watch server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "ejs": "^3.1.9"
+  }
+}
diff --git a/webnode/public/style.css b/webnode/public/style.css
new file mode 100644
index 0000000..9002236
--- /dev/null
+++ b/webnode/public/style.css
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+/* Reset and base styles */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+html, body {
+    height: 100%;
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    font-size: 16px;
+    line-height: 1.5;
+    background: #fff;
+    color: #333;
+    overflow-x: hidden;
+}
+
+/* Navbar */
+.navbar {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 56px;
+    background: #fff;
+    border-bottom: 1px solid #e0e0e0;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 0 16px;
+    z-index: 1000;
+}
+
+.nav-btn {
+    width: 40px;
+    height: 40px;
+    border: none;
+    background: transparent;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 8px;
+    transition: background 0.2s;
+}
+
+.nav-btn:hover {
+    background: #f5f5f5;
+}
+
+.nav-btn:active {
+    background: #e0e0e0;
+}
+
+.nav-btn svg {
+    width: 24px;
+    height: 24px;
+    stroke: #555;
+}
+
+.nav-title {
+    font-size: 18px;
+    font-weight: 600;
+    color: #333;
+}
+
+/* Main content area */
+.main-content {
+    padding-top: 56px;
+    min-height: 100vh;
+}
+
+/* Lines container */
+.lines-container {
+    padding: 8px 0;
+}
+
+/* Individual line */
+.line {
+    padding: 10px 16px;
+    cursor: pointer;
+    transition: background 0.15s;
+    border-bottom: 1px solid #f0f0f0;
+}
+
+.line:hover {
+    background: #f9f9f9;
+}
+
+.line.selected {
+    background: #e3f2fd;
+}
+
+.english {
+    font-size: 16px;
+    line-height: 1.5;
+    color: inherit;
+}
+
+/* Translation card (expanded state) */
+.translation-card {
+    margin-top: 10px;
+    padding: 12px 16px;
+    background: #fff9e6;
+    border-radius: 8px;
+    border-left: 3px solid #ffc107;
+    animation: slideDown 0.2s ease-out;
+}
+
+.meta-info {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    margin-bottom: 8px;
+    padding-bottom: 8px;
+    border-bottom: 1px solid #ffe0b2;
+}
+
+.meta-timestamp {
+    font-size: 11px;
+    color: #999;
+    font-family: monospace;
+}
+
+.meta-speaker {
+    font-size: 11px;
+    font-weight: 600;
+    color: #666;
+}
+
+.translation-label {
+    font-size: 10px;
+    color: #999;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+    margin-bottom: 4px;
+}
+
+.chinese {
+    font-size: 17px;
+    line-height: 1.6;
+    color: #333;
+}
+
+@keyframes slideDown {
+    from {
+        opacity: 0;
+        transform: translateY(-10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+/* Side menu */
+.side-menu-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(0, 0, 0, 0.5);
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity 0.3s, visibility 0.3s;
+    z-index: 2000;
+}
+
+.side-menu-overlay.active {
+    opacity: 1;
+    visibility: visible;
+}
+
+.side-menu {
+    position: fixed;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    width: 280px;
+    max-width: 80vw;
+    background: #fff;
+    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
+    transform: translateX(100%);
+    transition: transform 0.3s ease-out;
+    z-index: 2001;
+    display: flex;
+    flex-direction: column;
+}
+
+.side-menu.active {
+    transform: translateX(0);
+}
+
+.side-menu-header {
+    height: 56px;
+    padding: 0 16px;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    border-bottom: 1px solid #e0e0e0;
+}
+
+.side-menu-title {
+    font-size: 18px;
+    font-weight: 600;
+}
+
+.close-btn {
+    width: 40px;
+    height: 40px;
+    border: none;
+    background: transparent;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 8px;
+}
+
+.close-btn:hover {
+    background: #f5f5f5;
+}
+
+.close-btn svg {
+    width: 24px;
+    height: 24px;
+    stroke: #555;
+}
+
+.episode-list {
+    flex: 1;
+    overflow-y: auto;
+    padding: 8px 0;
+}
+
+.episode-item {
+    display: block;
+    padding: 16px;
+    text-decoration: none;
+    color: #333;
+    border-bottom: 1px solid #f0f0f0;
+    transition: background 0.15s;
+}
+
+.episode-item:hover {
+    background: #f5f5f5;
+}
+
+.episode-item.active {
+    background: #e3f2fd;
+    font-weight: 500;
+}
+
+.episode-id {
+    font-size: 16px;
+}
+
+/* Empty state */
+.empty-state {
+    padding: 40px 16px;
+    text-align: center;
+    color: #999;
+}
+
+/* Mobile optimizations */
+@media (max-width: 480px) {
+    .line {
+        padding: 12px 16px;
+    }
+    
+    .english {
+        font-size: 17px;
+    }
+    
+    .chinese {
+        font-size: 18px;
+    }
+}
+
+/* Hide scrollbar but keep functionality */
+.episode-list::-webkit-scrollbar {
+    width: 6px;
+}
+
+.episode-list::-webkit-scrollbar-track {
+    background: transparent;
+}
+
+.episode-list::-webkit-scrollbar-thumb {
+    background: #ccc;
+    border-radius: 3px;
+}
diff --git a/webnode/run.sh b/webnode/run.sh
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--- /dev/null
+++ b/webnode/run.sh
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+#!/bin/bash
+
+# Run the Node.js web server for the episode viewer
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# Install dependencies if needed
+if [ ! -d "node_modules" ]; then
+    echo "Installing dependencies..."
+    npm install
+fi
+
+echo "Starting Episode Web Viewer (Node.js)..."
+echo "Open http://localhost:5000 in your browser"
+echo "Press Ctrl+C to stop"
+echo ""
+
+npm start
diff --git a/webnode/server.js b/webnode/server.js
new file mode 100644
index 0000000..43ca6c8
--- /dev/null
+++ b/webnode/server.js
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+/**
+ * Simple Express server to display translated episodes with speaker colors.
+ */
+
+const express = require('express');
+const path = require('path');
+const fs = require('fs');
+
+const app = express();
+const PORT = process.env.PORT || 5000;
+
+// Configuration
+const TRANSLATED_DIR = path.join(__dirname, '..', '_translated');
+const COLORS_FILE = path.join(__dirname, '..', '_colors.json');
+
+// Set up EJS as templating engine
+app.set('view engine', 'ejs');
+app.set('views', path.join(__dirname, 'views'));
+
+// Serve static files
+app.use(express.static(path.join(__dirname, 'public')));
+
+/**
+ * Load speaker color mapping.
+ */
+function loadColors() {
+    try {
+        if (fs.existsSync(COLORS_FILE)) {
+            const data = fs.readFileSync(COLORS_FILE, 'utf-8');
+            return JSON.parse(data);
+        }
+    } catch (err) {
+        console.error('Error loading colors:', err);
+    }
+    return {};
+}
+
+/**
+ * Get list of all episodes from _translated folder.
+ */
+function getEpisodes() {
+    const episodes = [];
+    try {
+        if (fs.existsSync(TRANSLATED_DIR)) {
+            const files = fs.readdirSync(TRANSLATED_DIR);
+            files
+                .filter(f => f.endsWith('_translated.json'))
+                .sort()
+                .forEach(file => {
+                    // Extract episode name from filename (e.g., "S02E01_translated.json" -> "S02E01")
+                    const episodeId = file.replace('_translated.json', '');
+                    episodes.push({
+                        id: episodeId,
+                        filename: file,
+                        title: episodeId
+                    });
+                });
+        }
+    } catch (err) {
+        console.error('Error reading episodes:', err);
+    }
+    return episodes;
+}
+
+/**
+ * Load a specific episode's data.
+ */
+function loadEpisode(episodeId) {
+    const jsonFile = path.join(TRANSLATED_DIR, `${episodeId}_translated.json`);
+    try {
+        if (fs.existsSync(jsonFile)) {
+            const data = fs.readFileSync(jsonFile, 'utf-8');
+            return JSON.parse(data);
+        }
+    } catch (err) {
+        console.error('Error loading episode:', err);
+    }
+    return null;
+}
+
+/**
+ * Escape HTML special characters.
+ */
+function escapeHtml(text) {
+    if (!text) return '';
+    return text
+        .replace(/&/g, '&')
+        .replace(/</g, '&lt;')
+        .replace(/>/g, '&gt;')
+        .replace(/"/g, '&quot;')
+        .replace(/'/g, '&#039;');
+}
+
+// Make escapeHtml available to templates
+app.locals.escapeHtml = escapeHtml;
+
+// Routes
+app.get('/', (req, res) => {
+    const episodes = getEpisodes();
+    if (episodes.length === 0) {
+        return res.status(404).send('No episodes found');
+    }
+
+    // Get first episode data
+    const firstEpisode = episodes[0];
+    const lines = loadEpisode(firstEpisode.id);
+    const colors = loadColors();
+
+    res.render('episode', {
+        episodes,
+        currentEpisode: firstEpisode,
+        lines,
+        colors
+    });
+});
+
+app.get('/episode/:episodeId', (req, res) => {
+    const episodeId = req.params.episodeId;
+    const lines = loadEpisode(episodeId);
+
+    if (!lines) {
+        return res.status(404).send('Episode not found');
+    }
+
+    const episodes = getEpisodes();
+    const currentEpisode = {
+        id: episodeId,
+        filename: `${episodeId}_translated.json`,
+        title: episodeId
+    };
+    const colors = loadColors();
+
+    res.render('episode', {
+        episodes,
+        currentEpisode,
+        lines,
+        colors
+    });
+});
+
+// Start server
+app.listen(PORT, '0.0.0.0', () => {
+    console.log(`Episode Web Viewer running at http://localhost:${PORT}`);
+});
diff --git a/webnode/views/episode.ejs b/webnode/views/episode.ejs
new file mode 100644
index 0000000..7a0c494
--- /dev/null
+++ b/webnode/views/episode.ejs
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
+    <title><%= currentEpisode.title %></title>
+    <link rel="stylesheet" href="/style.css">
+</head>
+<body>
+    <!-- Navbar -->
+    <nav class="navbar">
+        <button class="nav-btn" id="translateBtn" title="Toggle Translation">
+            <svg viewBox="0 0 24 24" fill="none" stroke-width="2">
+                <path d="M12 20h9"/>
+                <path d="M16.5 3.5a2.121 2.121 0 0 1 3 3L7 19l-4 1 1-4L16.5 3.5z"/>
+            </svg>
+        </button>
+        <span class="nav-title"><%= currentEpisode.title %></span>
+        <button class="nav-btn" id="menuBtn" title="Episodes">
+            <svg viewBox="0 0 24 24" fill="none" stroke-width="2">
+                <path d="M3 12h18"/>
+                <path d="M3 6h18"/>
+                <path d="M3 18h18"/>
+            </svg>
+        </button>
+    </nav>
+
+    <!-- Main Content -->
+    <main class="main-content">
+        <div class="lines-container">
+            <% if (lines && lines.length > 0) { %>
+                <% lines.forEach(line => { %>
+                <div class="line" 
+                     data-chinese="<%= escapeHtml(line.chinese) %>"
+                     data-timestamp="<%= escapeHtml(line.timestamp) %>"
+                     data-speaker="<%= escapeHtml(line.speaker) %>">
+                    <div class="english" style="<%= colors[line.speaker] ? `color: ${colors[line.speaker]}` : '' %>">
+                        <%= line.english %>
+                    </div>
+                </div>
+                <% }) %>
+            <% } else { %>
+                <div class="empty-state">
+                    <p>No lines found in this episode.</p>
+                </div>
+            <% } %>
+        </div>
+    </main>
+
+    <!-- Side Menu Overlay -->
+    <div class="side-menu-overlay" id="sideMenuOverlay"></div>
+
+    <!-- Side Menu -->
+    <aside class="side-menu" id="sideMenu">
+        <div class="side-menu-header">
+            <span class="side-menu-title">Episodes</span>
+            <button class="close-btn" id="closeMenuBtn">
+                <svg viewBox="0 0 24 24" fill="none" stroke-width="2">
+                    <path d="M18 6L6 18"/>
+                    <path d="M6 6l12 12"/>
+                </svg>
+            </button>
+        </div>
+        <div class="episode-list">
+            <% episodes.forEach(ep => { %>
+            <a href="/episode/<%= ep.id %>" 
+               class="episode-item <%= currentEpisode.id === ep.id ? 'active' : '' %>">
+                <span class="episode-id"><%= ep.title %></span>
+            </a>
+            <% }) %>
+        </div>
+    </aside>
+
+    <!-- Minimal JavaScript for interactions -->
+    <script>
+        (function() {
+            // DOM Elements
+            const translateBtn = document.getElementById('translateBtn');
+            const menuBtn = document.getElementById('menuBtn');
+            const closeMenuBtn = document.getElementById('closeMenuBtn');
+            const sideMenu = document.getElementById('sideMenu');
+            const sideMenuOverlay = document.getElementById('sideMenuOverlay');
+            const lines = document.querySelectorAll('.line');
+
+            let selectedLine = null;
+            let expandedLine = null;
+
+            // Line selection
+            lines.forEach(line => {
+                line.addEventListener('click', function(e) {
+                    // Remove selected class from all lines
+                    lines.forEach(l => l.classList.remove('selected'));
+                    
+                    // Add selected class to clicked line
+                    this.classList.add('selected');
+                    selectedLine = this;
+                });
+            });
+
+            // Toggle translation on selected line
+            translateBtn.addEventListener('click', function() {
+                if (!selectedLine) {
+                    // If no line selected, select the first one
+                    if (lines.length > 0) {
+                        lines[0].classList.add('selected');
+                        selectedLine = lines[0];
+                    }
+                }
+
+                if (selectedLine) {
+                    const translationCard = selectedLine.querySelector('.translation-card');
+                    
+                    if (translationCard) {
+                        // If already expanded, collapse it
+                        translationCard.remove();
+                        expandedLine = null;
+                    } else {
+                        // Collapse any previously expanded line
+                        if (expandedLine) {
+                            const prevCard = expandedLine.querySelector('.translation-card');
+                            if (prevCard) prevCard.remove();
+                        }
+                        
+                        // Expand the selected line
+                        const chineseText = selectedLine.dataset.chinese;
+                        const timestamp = selectedLine.dataset.timestamp;
+                        const speaker = selectedLine.dataset.speaker;
+                        if (chineseText) {
+                            const card = document.createElement('div');
+                            card.className = 'translation-card';
+                            card.innerHTML = `
+                                <div class="meta-info">
+                                    <span class="meta-timestamp">${escapeHtml(timestamp)}</span>
+                                    <span class="meta-speaker">${escapeHtml(speaker)}</span>
+                                </div>
+                                <div class="translation-label">中文</div>
+                                <div class="chinese">${escapeHtml(chineseText)}</div>
+                            `;
+                            selectedLine.appendChild(card);
+                            expandedLine = selectedLine;
+                            
+                            // Scroll the expanded card into view smoothly
+                            setTimeout(() => {
+                                card.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
+                            }, 100);
+                        }
+                    }
+                }
+            });
+
+            // Open side menu
+            function openMenu() {
+                sideMenu.classList.add('active');
+                sideMenuOverlay.classList.add('active');
+                document.body.style.overflow = 'hidden';
+            }
+
+            // Close side menu
+            function closeMenu() {
+                sideMenu.classList.remove('active');
+                sideMenuOverlay.classList.remove('active');
+                document.body.style.overflow = '';
+            }
+
+            menuBtn.addEventListener('click', openMenu);
+            closeMenuBtn.addEventListener('click', closeMenu);
+            sideMenuOverlay.addEventListener('click', closeMenu);
+
+            // Helper: Escape HTML to prevent XSS
+            function escapeHtml(text) {
+                const div = document.createElement('div');
+                div.textContent = text;
+                return div.innerHTML;
+            }
+
+            // Close menu on escape key
+            document.addEventListener('keydown', function(e) {
+                if (e.key === 'Escape') {
+                    closeMenu();
+                }
+            });
+        })();
+    </script>
+</body>
+</html>