TTORANG · AndyH0ng · Feb 13, 2026 · Feb 13, 2026 · Feb 13, 2026 · Feb 13, 2026
diff --git a/index.html b/index.html
@@ -3,7 +3,9 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="theme-color" content="#4F5BFF" />
     <title>또랑</title>
+    <meta name="description" content="가장 쉽고 빠른 발표 피드백, 또랑" />
     <link rel="preconnect" href="https://cdn.jsdelivr.net" crossorigin />
     <link
       rel="stylesheet"
@@ -12,9 +14,22 @@
     <link rel="manifest" href="site.webmanifest" />
     <link rel="apple-touch-icon" sizes="180x180" href="apple-touch-icon.png" />
     <meta name="apple-mobile-web-app-title" content="또랑" />
+    <meta property="og:type" content="website" />
+    <meta property="og:title" content="또랑" />
+    <meta property="og:description" content="가장 쉽고 빠른 발표 피드백, 또랑" />
+    <meta property="og:image" content="/og-image.png" />
+    <meta property="og:locale" content="ko_KR" />
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="또랑" />
+    <meta name="twitter:description" content="가장 쉽고 빠른 발표 피드백, 또랑" />
+    <meta name="twitter:image" content="/og-image.png" />
     <link rel="icon" type="image/svg+xml" href="favicon.svg" />
     <link rel="icon" type="image/png" href="favicon-96x96.png" sizes="96x96" />
     <link rel="shortcut icon" href="favicon.ico" />
+    <script>
+        !function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.crossOrigin="anonymous",p.async=!0,p.src=s.api_host.replace(".i.posthog.com","-assets.i.posthog.com")+"/static/array.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;for(void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="init capture register register_once register_for_session unregister unregister_for_session getFeatureFlag getFeatureFlagPayload isFeatureEnabled reloadFeatureFlags updateEarlyAccessFeatureEnrollment getEarlyAccessFeatures on onFeatureFlags onSessionId getSurveys getActiveMatchingSurveys renderSurvey canRenderSurvey getNextSurveyStep identify setPersonProperties group resetGroups setPersonPropertiesForFlags resetPersonPropertiesForFlags setGroupPropertiesForFlags resetGroupPropertiesForFlags reset get_distinct_id getGroups get_session_id get_session_replay_url alias set_config startSessionRecording stopSessionRecording sessionRecordingStarted captureException loadToolbar get_property getSessionProperty createPersonProfile opt_in_capturing opt_out_capturing has_opted_in_capturing has_opted_out_capturing clear_opt_in_out_capturing debug".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
+        posthog.init('phc_gOM0XCnEFz0tHv6ZacyEbqkhRCfl1n23mMMXx4zQUYT',{api_host:'https://us.i.posthog.com', defaults:'2026-01-30'})
+    </script>
   </head>
   <body>
     <div id="root"></div>

diff --git a/public/apple-touch-icon.png b/public/apple-touch-icon.png
diff --git a/public/favicon-96x96.png b/public/favicon-96x96.png
diff --git a/public/favicon.ico b/public/favicon.ico
diff --git a/public/favicon.svg b/public/favicon.svg
diff --git a/public/og-image.png b/public/og-image.png
diff --git a/public/robots.txt b/public/robots.txt
@@ -0,0 +1,8 @@
+User-agent: *
+Allow: /
+Disallow: /dev
+Disallow: /auth/callback
+
+Sitemap: https://ttorang.com/sitemap.xml
+
+#DaumWebMasterTool:a156121360345cf19b1246a7aff4562c93dcb6cd0fc0273cc6a6f74351424ca6:epG3XsgQs63qHOAcJoVUhQ==
diff --git a/public/site.webmanifest b/public/site.webmanifest
@@ -6,16 +6,28 @@
       "src": "/web-app-manifest-192x192.png",
       "sizes": "192x192",
       "type": "image/png",
-      "purpose": "maskable"
+      "purpose": "any"
     },
     {
       "src": "/web-app-manifest-512x512.png",
       "sizes": "512x512",
       "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/web-app-manifest-192x192-maskable.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/web-app-manifest-512x512-maskable.png",
+      "sizes": "512x512",
+      "type": "image/png",
       "purpose": "maskable"
     }
   ],
-  "theme_color": "#ffffff",
-  "background_color": "#ffffff",
+  "theme_color": "#4F5BFF",
+  "background_color": "#F8FAFF",
   "display": "standalone"
-}
+}
diff --git a/public/sitemap.xml b/public/sitemap.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://ttorang.com/</loc>
+    <changefreq>daily</changefreq>
+    <priority>1.0</priority>
+  </url>
+</urlset>
diff --git a/public/web-app-manifest-192x192-maskable.png b/public/web-app-manifest-192x192-maskable.png
diff --git a/public/web-app-manifest-192x192.png b/public/web-app-manifest-192x192.png
diff --git a/public/web-app-manifest-512x512-maskable.png b/public/web-app-manifest-512x512-maskable.png
diff --git a/public/web-app-manifest-512x512.png b/public/web-app-manifest-512x512.png