Flask框架网站
为您设计一个现代、美观的Flask网站首页，包含导航、内容展示和响应式布局。
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<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>FlaskWeb - 现代化Python Web开发</title><link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"><style>:root {--primary-color: #4f46e5;--secondary-color: #10b981;--dark-color: #1f2937;