看板项目管理界面

生成一张 1024x1280 像素、4:5 竖版项目管理看板界面。顶部项目名「第三季度产品改版」。四列标题「待办」「进行中」「评审中」「已完成」。卡片为中文任务：「首页视觉更新」「支付流程梳理」「用户调研」「发布文档」。右上按钮「添加任务」，侧栏品牌「High 项目」。所有可见文字为简体中文，不出现英文列名、英文按钮、真实项目管理平台标志、水印或乱码。

A desktop browser mockup of a kanban project management board, viewed at 1440 px. Four columns are arranged horizontally across the viewport: "Backlog" (gray header), "In Progress" (blue header), "In Review" (amber header), "Done" (green header). Each column contains 3–5 task cards. Each card shows: a short task title, a colored priority badge ("High" red, "Medium" amber, "Low" blue), an assignee avatar cluster of up to 3 initials, a due-date chip, and a subtle subtask progress bar "3/5". One card in "In Progress" is shown mid-drag with a translucent shadow lift effect. The board header includes a project title "Product Redesign Q3", a filter bar (member avatars, date-range picker, label filter), and a "+ Add Task" button. Color palette: white canvas, column headers with 20% tint fills, card backgrounds white with 1 px border and 4 px border-radius. Sans-serif UI font. Compact but airy spacing. A slim top-left sidebar icon strip hints at the full app shell.