feat: 完成navbar隐藏优化和侧边栏冻结功能

- 优化navbar滚动隐藏逻辑，更敏感响应
- 添加返回顶部按钮，固定在右下角
- 实现profile页面侧边栏真正冻结效果
- 修复首页滑动指示器位置
- 优化整体布局确保首屏内容完整显示

tailwind.config.ts

@@ -0,0 +1,51 @@
+import type { Config } from "tailwindcss";
+
+const config: Config = {
+  content: [
+    "./src/pages/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/components/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/app/**/*.{js,ts,jsx,tsx,mdx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        orange: {
+          50: '#fff7ed',
+          100: '#ffedd5',
+          200: '#fed7aa',
+          300: '#fdba74',
+          400: '#fb923c',
+          500: '#f97316',
+          600: '#ea580c',
+          700: '#c2410c',
+          800: '#9a3412',
+          900: '#7c2d12',
+          950: '#431407',
+        },
+        minecraft: {
+          grass: '#7cbd6a',
+          dirt: '#8b4513',
+          stone: '#808080',
+          wood: '#8b6914',
+          diamond: '#4fc3f7',
+        }
+      },
+      fontFamily: {
+        'minecraft': ['Minecraft', 'monospace'],
+        'sans': ['Inter', 'system-ui', 'sans-serif'],
+      },
+      animation: {
+        'float': 'float 3s ease-in-out infinite',
+        'pulse-slow': 'pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite',
+      },
+      keyframes: {
+        float: {
+          '0%, 100%': { transform: 'translateY(0px)' },
+          '50%': { transform: 'translateY(-10px)' },
+        }
+      }
+    },
+  },
+  plugins: [],
+};
+export default config;