YouTube 深色模式桌面端 UI 原型

a realistic full-screen desktop screenshot of YouTube homepage in dark mode open in a Chromium browser on Windows, viewed straight-on with the entire browser window and taskbar visible, left sidebar expanded with navigation and subscriptions, top search bar and category chips, a 3-column grid of recommended science, tech, gaming and lofi videos with colorful thumbnails, clean modern flat UI design, charcoal black and dark gray interface with white text and red YouTube accents, crisp icons, subtle rounded cards, high-resolution digital screen capture, sharp readable typography, no cursor, no human hands, authentic operating system chrome and interface details, centered composition, 16:10 monitor aspect, photorealistic screenshot render