chore: 初始化 Hugo 博客项目

Hextra 主题，8 篇文章，支持全文搜索/暗色模式

themes/hextra/.vscode/settings.json

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+{
+  "editor.tabSize": 2,
+  "css.customData": [".vscode/tailwind.json"],
+  "markdown.extension.toc.levels": "2..6"
+}

themes/hextra/.vscode/tailwind.json

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+{
+  "version": 1.1,
+  "atDirectives": [
+    {
+      "name": "@tailwind",
+      "description": "Use the `@tailwind` directive to insert Tailwind's `base`, `components`, `utilities` and `screens` styles into your CSS.",
+      "references": [
+        {
+          "name": "Tailwind Documentation",
+          "url": "https://tailwindcss.com/docs/functions-and-directives#tailwind"
+        }
+      ]
+    },
+    {
+      "name": "@apply",
+      "description": "Use the `@apply` directive to inline any existing utility classes into your own custom CSS. This is useful when you find a common utility pattern in your HTML that you’d like to extract to a new component.",
+      "references": [
+        {
+          "name": "Tailwind Documentation",
+          "url": "https://tailwindcss.com/docs/functions-and-directives#apply"
+        }
+      ]
+    },
+    {
+      "name": "@responsive",
+      "description": "You can generate responsive variants of your own classes by wrapping their definitions in the `@responsive` directive:\n```css\n@responsive {\n  .alert {\n    background-color: #E53E3E;\n  }\n}\n```\n",
+      "references": [
+        {
+          "name": "Tailwind Documentation",
+          "url": "https://tailwindcss.com/docs/functions-and-directives#responsive"
+        }
+      ]
+    },
+    {
+      "name": "@screen",
+      "description": "The `@screen` directive allows you to create media queries that reference your breakpoints by **name** instead of duplicating their values in your own CSS:\n```css\n@screen sm {\n  /* ... */\n}\n```\n…gets transformed into this:\n```css\n@media (min-width: 640px) {\n  /* ... */\n}\n```\n",
+      "references": [
+        {
+          "name": "Tailwind Documentation",
+          "url": "https://tailwindcss.com/docs/functions-and-directives#screen"
+        }
+      ]
+    },
+    {
+      "name": "@variants",
+      "description": "Generate `hover`, `focus`, `active` and other **variants** of your own utilities by wrapping their definitions in the `@variants` directive:\n```css\n@variants hover, focus {\n   .btn-brand {\n    background-color: #3182CE;\n  }\n}\n```\n",
+      "references": [
+        {
+          "name": "Tailwind Documentation",
+          "url": "https://tailwindcss.com/docs/functions-and-directives#variants"
+        }
+      ]
+    }
+  ]
+}