diff --git a/app.tsx b/app.tsx
index cfd3851..85fa2a6 100644
--- a/app.tsx
+++ b/app.tsx
@@ -360,7 +360,7 @@ function AuthScreen({ onAuth }: { onAuth: (token: string, user: AuthUser) => voi
       <div className="w-full max-w-md relative z-10">
         <div className="flex flex-col items-center mb-10">
           <img
-            src="/assets/spectracleanse-login-emblem.png"
+            src="/assets/spectracleanse-login-emblem.svg"
             alt="SpectraCleanseAI emblem"
             className="mb-4 w-24 sm:w-28 md:w-32 lg:w-36 h-auto object-contain rounded-2xl shadow-[0_0_30px_rgba(34,211,238,0.18)]"
           />
diff --git a/public/assets/spectracleanse-login-emblem.svg b/public/assets/spectracleanse-login-emblem.svg
new file mode 100644
index 0000000..e8bdaca
--- /dev/null
+++ b/public/assets/spectracleanse-login-emblem.svg
@@ -0,0 +1,29 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" role="img" aria-label="SpectraCleanseAI emblem">
+  <defs>
+    <radialGradient id="bg" cx="50%" cy="44%" r="62%">
+      <stop offset="0%" stop-color="#0d1830" stop-opacity=".42"/>
+      <stop offset="100%" stop-color="#04070f" stop-opacity=".08"/>
+    </radialGradient>
+    <linearGradient id="helmet" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#57f9ff"/>
+      <stop offset="55%" stop-color="#48b7ff"/>
+      <stop offset="100%" stop-color="#70ffd6"/>
+    </linearGradient>
+    <linearGradient id="visor" x1="0" y1="0" x2="1" y2="0">
+      <stop offset="0%" stop-color="#a053ff"/>
+      <stop offset="100%" stop-color="#ff5de5"/>
+    </linearGradient>
+    <filter id="glow" x="-60%" y="-60%" width="220%" height="220%">
+      <feGaussianBlur stdDeviation="4" result="b"/>
+      <feMerge><feMergeNode in="b"/><feMergeNode in="SourceGraphic"/></feMerge>
+    </filter>
+  </defs>
+  <circle cx="128" cy="128" r="116" fill="url(#bg)"/>
+  <g fill="none" stroke-linecap="round" stroke-linejoin="round" filter="url(#glow)">
+    <path d="M49 125c5-46 40-78 79-78s74 32 79 78c1 9-4 19-14 27l-20 15c-4 3-8 4-13 4h-64c-5 0-9-1-13-4l-20-15c-10-8-15-18-14-27Z" stroke="url(#helmet)" stroke-width="8"/>
+    <path d="M84 112h88" stroke="url(#visor)" stroke-width="6" opacity=".95"/>
+    <path d="M69 92c15-30 44-49 59-49s44 19 59 49" stroke="#53ffe4" stroke-opacity=".5" stroke-width="3"/>
+    <path d="M72 112c10-8 20-6 27 1s14 7 22-1 15-8 22 1 16 9 24 1 17-9 26-1" stroke="url(#visor)" stroke-width="4"/>
+    <path d="M104 160h48" stroke="#56f6d6" stroke-opacity=".78" stroke-width="4"/>
+  </g>
+</svg>