diff --git a/deno.json b/deno.json
index 947c793..5e9eac4 100644
--- a/deno.json
+++ b/deno.json
@@ -14,6 +14,7 @@
     },
     "imports": {
         "@astrojs/node": "npm:@astrojs/node@^9.1.3",
-        "@astrojs/svelte": "npm:@astrojs/svelte@^7.0.8"
+        "@astrojs/svelte": "npm:@astrojs/svelte@^7.0.8",
+		"@core/db/": "./packages/core/db/"
     }
 }
diff --git a/packages/crawler/db/pgConfig.ts b/packages/core/db/pgConfig.ts
similarity index 75%
rename from packages/crawler/db/pgConfig.ts
rename to packages/core/db/pgConfig.ts
index 5410760..adea921 100644
--- a/packages/crawler/db/pgConfig.ts
+++ b/packages/core/db/pgConfig.ts
@@ -8,6 +8,7 @@ if (unsetVars.length > 0) {
 
 const databaseHost = Deno.env.get("DB_HOST")!;
 const databaseName = Deno.env.get("DB_NAME")!;
+const databaseNameCred = Deno.env.get("DB_NAME_CRED")!;
 const databaseUser = Deno.env.get("DB_USER")!;
 const databasePassword = Deno.env.get("DB_PASSWORD")!;
 const databasePort = Deno.env.get("DB_PORT")!;
@@ -19,3 +20,11 @@ export const postgresConfig = {
 	user: databaseUser,
 	password: databasePassword,
 };
+
+export const postgresConfigCred = {
+	hostname: databaseHost,
+	port: parseInt(databasePort),
+	database: databaseNameCred,
+	user: databaseUser,
+	password: databasePassword,
+}
\ No newline at end of file
diff --git a/packages/crawler/db/init.ts b/packages/crawler/db/init.ts
index a1835b0..33bc3c6 100644
--- a/packages/crawler/db/init.ts
+++ b/packages/crawler/db/init.ts
@@ -1,5 +1,5 @@
 import { Pool } from "https://deno.land/x/postgres@v0.19.3/mod.ts";
-import { postgresConfig } from "db/pgConfig.ts";
+import { postgresConfig } from "@core/db/pgConfig.ts";
 
 const pool = new Pool(postgresConfig, 12);
 
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index 78da34b..377d360 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -1,19 +1,23 @@
 {
-	"name": "frontend",
-	"type": "module",
-	"version": "0.0.1",
-	"scripts": {
-		"dev": "astro dev",
-		"build": "astro build",
-		"preview": "astro preview",
-		"astro": "astro"
-	},
-	"dependencies": {
-		"@astrojs/tailwind": "^6.0.2",
-		"astro": "^5.5.5",
-		"autoprefixer": "^10.4.21",
-		"postcss": "^8.5.3",
-		"tailwindcss": "^3.0.24",
-		"vite-tsconfig-paths": "^5.1.4"
-	}
+    "name": "frontend",
+    "type": "module",
+    "version": "0.0.1",
+    "scripts": {
+        "dev": "astro dev",
+        "build": "astro build",
+        "preview": "astro preview",
+        "astro": "astro"
+    },
+    "dependencies": {
+        "@astrojs/tailwind": "^6.0.2",
+        "astro": "^5.5.5",
+        "autoprefixer": "^10.4.21",
+        "pg": "^8.11.11",
+        "postcss": "^8.5.3",
+        "tailwindcss": "^3.0.24",
+        "vite-tsconfig-paths": "^5.1.4"
+    },
+    "devDependencies": {
+        "@types/pg": "^8.11.11"
+    }
 }
diff --git a/packages/frontend/src/components/SearchBox.svelte b/packages/frontend/src/components/SearchBox.svelte
index f851224..e23c47f 100644
--- a/packages/frontend/src/components/SearchBox.svelte
+++ b/packages/frontend/src/components/SearchBox.svelte
@@ -1,5 +1,14 @@
 <script lang="ts">
-    export let autoFocus = false;
+    let inputBox: HTMLInputElement | null = null;
+
+    export function changeFocusState(target: boolean) {
+        if (!inputBox) return;
+        if (target) {
+            inputBox.focus();
+        } else {
+            inputBox.blur();
+        }
+    }
 
     function handleKeydown(event: KeyboardEvent) {
         if (event.key === "Enter") {
@@ -8,7 +17,7 @@
             const value: string = input.value.trim();
             if (!value) return;
             if (value.startsWith("av")) {
-                window.location.href = `/song/${value.slice(2)}/info`;
+                window.location.href = `/song/${value}/info`;
             }
         }
     }
@@ -17,9 +26,9 @@
 <!-- svelte-ignore a11y_autofocus -->
 <div
     class="absolute left-0 md:left-96 ml-4 w-[calc(100%-5rem)] md:w-[calc(100%-40rem)] 2xl:max-w-[50rem] 2xl:left-1/2 2xl:-translate-x-1/2 inline-flex items-center h-full"
-    autofocus={autoFocus}
 >
     <input
+        bind:this={inputBox}
         type="search"
         placeholder="搜索"
         class="top-0 w-full h-10 px-4 rounded-lg bg-white/80 dark:bg-zinc-800/70
diff --git a/packages/frontend/src/components/TitleBarMobile.svelte b/packages/frontend/src/components/TitleBarMobile.svelte
index bcdd28b..acb7fef 100644
--- a/packages/frontend/src/components/TitleBarMobile.svelte
+++ b/packages/frontend/src/components/TitleBarMobile.svelte
@@ -7,14 +7,19 @@
     import DarkModeImage from "./DarkModeImage.svelte";
     import CloseIcon from "./CloseIcon.svelte";
 
+    let searchBox: SearchBox | null = null;
     let showSearchBox = false;
+
+    $: if (showSearchBox && searchBox) {
+        searchBox.changeFocusState(true);
+    }
 </script>
 
 <div class="md:hidden fixed top-0 left-0 w-full h-16 bg-white/80 dark:bg-zinc-800/70 backdrop-blur-lg z-100">
     {#if !showSearchBox}
-        <div class="inline-block ml-4 mt-4 text-white">
+        <button class="inline-block ml-4 mt-4 text-white">
             <MenuIcon />
-        </div>
+        </button>
         <div class="ml-8 inline-flex h-full items-center">
             <a href="/">
                 <DarkModeImage
@@ -27,7 +32,7 @@
         </div>
     {/if}
     {#if showSearchBox}
-        <SearchBox autoFocus={true} />
+        <SearchBox bind:this={searchBox} />
     {/if}
     <button
         class="inline-flex absolute right-0 h-full items-center mr-4"
diff --git a/packages/frontend/src/pages/404.astro b/packages/frontend/src/pages/404.astro
new file mode 100644
index 0000000..2410b5c
--- /dev/null
+++ b/packages/frontend/src/pages/404.astro
@@ -0,0 +1,10 @@
+---
+import Layout from '@layouts/Layout.astro';
+---
+
+<Layout>
+	<main class="flex flex-col items-center justify-center min-h-screen gap-8">
+        <h1 class="text-9xl font-thin">404</h1>
+        <p class="text-xl font-medium">咦……页面去哪里了(ﾟДﾟ≡ﾟдﾟ)!?</p>
+    </main>
+</Layout>
diff --git a/packages/frontend/src/pages/song/[aid]/info.astro b/packages/frontend/src/pages/song/[aid]/info.astro
deleted file mode 100644
index dd5778f..0000000
--- a/packages/frontend/src/pages/song/[aid]/info.astro
+++ /dev/null
@@ -1,40 +0,0 @@
----
-import Layout from "@layouts/Layout.astro";
-
-// 路由参数
-const { aid } = Astro.params;
-const videoAid = Number(aid);
-
-// 数据库查询函数
-async function getVideoMetadata(aid: number) {
-    // TODO: 实现bilibili_metadata表查询
-    return {};
-}
-
-async function getVideoSnapshots(aid: number) {
-    // TODO: 实现video_snapshot表查询，按created_at排序，限制100条
-    return [];
-}
-
-// 获取数据
-const videoInfo = await getVideoMetadata(videoAid);
-const snapshots = await getVideoSnapshots(videoAid);
----
-
-<Layout>
-    <div class="max-w-4xl mx-auto rounded-lg shadow p-6">
-        <h1 class="text-2xl font-bold mb-4">视频信息: {videoAid}</h1>
-
-        <!-- 视频基本信息 -->
-        <div class="mb-6 p-4 rounded-lg">
-            <h2 class="text-xl font-semibold mb-2">基本信息</h2>
-            <pre class="bg-gray-50 dark:bg-zinc-700 p-2 rounded">{JSON.stringify(videoInfo, null, 2)}</pre>
-        </div>
-
-        <!-- 视频快照数据 -->
-        <div class="p-4 rounded-lg">
-            <h2 class="text-xl font-semibold mb-2">历史数据 (最新100条)</h2>
-            <pre class="bg-gray-50 dark:bg-zinc-700 p-2 rounded">{JSON.stringify(snapshots, null, 2)}</pre>
-        </div>
-    </div>
-</Layout>
diff --git a/packages/frontend/src/pages/song/[id]/info.astro b/packages/frontend/src/pages/song/[id]/info.astro
new file mode 100644
index 0000000..edc08c0
--- /dev/null
+++ b/packages/frontend/src/pages/song/[id]/info.astro
@@ -0,0 +1,88 @@
+---
+import Layout from "@layouts/Layout.astro";
+import pg from 'pg'
+import { postgresConfig } from "@core/db/pgConfig.ts";
+
+// 路由参数
+const { id } = Astro.params;
+const { Client } = pg
+const client = new Client(postgresConfig);
+await client.connect();
+
+// 数据库查询函数
+async function getVideoMetadata(aid: number) {
+    const res = await client.query('SELECT * FROM bilibili_metadata WHERE aid = $1', [aid]);
+    if (res.rows.length <= 0) {
+        return null
+    }
+    const row = res.rows[0];
+    if (row) {
+        return row;
+    }
+    return {};
+}
+
+async function getVideoSnapshots(aid: number) {
+    // TODO: 实现video_snapshot表查询，按created_at排序，限制100条
+    const res = await client.query('SELECT * FROM video_snapshot WHERE aid = $1 ORDER BY created_at DESC LIMIT 100', [aid]);
+    if (res.rows.length <= 0) {
+        return null
+    }
+    return res.rows;
+}
+
+async function getAidFromBV(bv: string) {
+    const res = await client.query('SELECT aid FROM bilibili_metadata WHERE bvid = $1', [bv]);
+    if (res.rows.length <= 0) {
+        return null
+    }
+    const row = res.rows[0];
+    if (row && row.aid) {
+        return Number(row.aid);
+    }
+    return null;
+}
+
+async function getVideoAid(id: string) {
+    if (id.startsWith("av")) {
+        return parseInt(id.slice(2));
+    } else if (id.startsWith("BV")) {
+        return getAidFromBV(id);
+    }
+    return parseInt(id);
+}
+
+// 获取数据
+if (!id) {
+    Astro.response.status = 404;
+    client.end();
+    return new Response(null, { status: 404 });
+}
+const aid = await getVideoAid(id);
+if (!aid || isNaN(aid)) {
+    Astro.response.status = 404;
+    client.end();
+    return new Response(null, { status: 404 });
+}
+const videoInfo = await getVideoMetadata(aid);
+const snapshots = await getVideoSnapshots(aid);
+client.end();
+---
+
+<Layout>
+    <div class="max-w-4xl mx-auto rounded-lg shadow p-6">
+        <h1 class="text-2xl font-bold mb-4">视频信息: {aid}</h1>
+
+        <!-- 视频基本信息 -->
+        <div class="mb-6 p-4 rounded-lg">
+            <h2 class="text-xl font-semibold mb-2">基本信息</h2>
+            <pre class="bg-gray-50 dark:bg-zinc-700 p-2 rounded text-wrap">{JSON.stringify(videoInfo, null, 2)}</pre>
+        </div>
+
+        <!-- 视频快照数据 -->
+        <div class="p-4 rounded-lg">
+            <h2 class="text-xl font-semibold mb-2">快照历史数据 (最新100条)</h2>
+            <pre class="bg-gray-50 dark:bg-zinc-700 p-2 rounded">{JSON.stringify(snapshots, null, 2)}</pre>
+        </div>
+    </div>
+</Layout>
diff --git a/packages/frontend/tsconfig.json b/packages/frontend/tsconfig.json
index 9c3f979..bee52b7 100644
--- a/packages/frontend/tsconfig.json
+++ b/packages/frontend/tsconfig.json
@@ -9,7 +9,8 @@
             "@layouts/*": ["src/layouts/*"],
             "@utils/*": ["src/utils/*"],
             "@assets/*": ["src/assets/*"],
-			"@styles": ["src/styles/*"]
+			"@styles": ["src/styles/*"],
+            "@core/*": ["../core/*"]
         }
     }
 }