新媒体内容工作台

Build a single-page content-studio workbench as one self-contained HTML file with inline CSS (no build step, no external requests). Layout: fixed 200px left sidebar with brand, five nav items (Topics, Scripts, Calendar, Performance, Assets) and a user chip; top bar with page title, search input and avatar; main area with a 4-card KPI row (Posts this week 9, Avg views 24.6k +18%, New follows 1,208 +6%, Engagement 4.8% -0.4%), a 7-day publishing calendar grid (each day: platform tag, title, time), a script board with three stage columns (Drafting 3 / Filming 2 / Editing 4), and a last-10-posts performance table. Light neutral surface, 1px borders, rounded-2xl cards, system font, pink #db2777 as the only accent. All data hardcoded mock data. Width 1208px.