diff --git a/public/images/404/README.md b/public/images/404/README.md
new file mode 100644
index 0000000..0731c1a
--- /dev/null
+++ b/public/images/404/README.md
@@ -0,0 +1,48 @@
+# 404 Robot Image Assets
+
+Cuando se suba la imagen final del robot (PNG/WebP/AVIF), debe ir en esta carpeta:
+
+```
+public/images/404/
+├── robot-mate.png      (fallback, mínimo 480x480)
+├── robot-mate.webp     (preferido moderno, <50KB)
+└── robot-mate.avif     (óptimo, <30KB)
+```
+
+## Cómo se usa
+
+El `src/pages/404.astro` usa `<picture>` con esta estructura:
+
+```html
+<picture>
+  <source type="image/avif" srcset="/images/404/robot-mate.avif" />
+  <source type="image/webp" srcset="/images/404/robot-mate.webp" />
+  <img src="/images/404/robot-mate.png" alt="..." onerror="fallback" />
+</picture>
+```
+
+Si **ninguna** de las versiones existe, el `onerror` muestra el SVG inline de respaldo (mismo robot dibujado en SVG).
+
+## Generar las versiones optimizadas
+
+Una vez que se tenga la imagen original (PNG o JPG) en `public/images/404/robot-mate-original.png`:
+
+```bash
+cd public/images/404
+
+# WebP
+convert robot-mate-original.png -quality 82 -resize 600x600 robot-mate.webp
+
+# AVIF
+avifenc --min 25 --max 35 --speed 6 -o robot-mate.avif robot-mate-original.png
+
+# PNG fallback
+convert robot-mate-original.png -quality 90 -resize 480x480 robot-mate.png
+```
+
+## Reemplazo
+
+1. Mauri guarda la imagen IA final (la del robot vago con mate) en `public/images/404/`
+2. Correr el script de arriba para generar AVIF/WebP/PNG
+3. Rebuild + deploy
+4. El sitio muestra la imagen IA automáticamente; si no carga, fallback SVG
diff --git a/src/pages/404.astro b/src/pages/404.astro
index 46aca04..96e1fe4 100644
--- a/src/pages/404.astro
+++ b/src/pages/404.astro
@@ -11,124 +11,140 @@ import BaseLayout from '@/layouts/BaseLayout.astro';
     <div class="relative max-w-5xl mx-auto px-4 sm:px-6 lg:px-8 w-full">
       <div class="grid grid-cols-1 lg:grid-cols-2 gap-12 items-center">
 
-        <!-- Robot SVG -->
         <div class="order-2 lg:order-1" aria-hidden="true">
-          <svg viewBox="0 0 480 480" xmlns="http://www.w3.org/2000/svg" class="w-full max-w-md mx-auto">
-            <defs>
-              <linearGradient id="bg-grad" x1="0" y1="0" x2="0" y2="1">
-                <stop offset="0%" stop-color="#FAF6EE" stop-opacity="0"/>
-                <stop offset="100%" stop-color="#EE7623" stop-opacity="0.08"/>
-              </linearGradient>
-              <filter id="soft-shadow" x="-50%" y="-50%" width="200%" height="200%">
-                <feGaussianBlur in="SourceAlpha" stdDeviation="8"/>
-                <feOffset dx="0" dy="4" result="offsetblur"/>
-                <feComponentTransfer><feFuncA type="linear" slope="0.15"/></feComponentTransfer>
-                <feMerge><feMergeNode/><feMergeNode in="SourceGraphic"/></feMerge>
-              </filter>
-            </defs>
+          <picture>
+            <source type="image/avif" srcset="/images/404/robot-mate.avif" />
+            <source type="image/webp" srcset="/images/404/robot-mate.webp" />
+            <img
+              src="/images/404/robot-mate.png"
+              alt="Robot tomando mate con cara de vago"
+              width="480"
+              height="480"
+              class="w-full max-w-md mx-auto h-auto"
+              loading="eager"
+              decoding="async"
+              onerror="this.style.display='none'; document.getElementById('robot-fallback').style.display='block';"
+            />
+          </picture>
 
-            <circle cx="240" cy="240" r="220" fill="url(#bg-grad)"/>
+          <div id="robot-fallback" style="display:none;" aria-hidden="true">
+            <svg viewBox="0 0 480 480" xmlns="http://www.w3.org/2000/svg" class="w-full max-w-md mx-auto">
+              <defs>
+                <linearGradient id="bg-grad" x1="0" y1="0" x2="0" y2="1">
+                  <stop offset="0%" stop-color="#FAF6EE" stop-opacity="0"/>
+                  <stop offset="100%" stop-color="#EE7623" stop-opacity="0.08"/>
+                </linearGradient>
+                <filter id="soft-shadow" x="-50%" y="-50%" width="200%" height="200%">
+                  <feGaussianBlur in="SourceAlpha" stdDeviation="8"/>
+                  <feOffset dx="0" dy="4" result="offsetblur"/>
+                  <feComponentTransfer><feFuncA type="linear" slope="0.15"/></feComponentTransfer>
+                  <feMerge><feMergeNode/><feMergeNode in="SourceGraphic"/></feMerge>
+                </filter>
+              </defs>
 
-            <g opacity="0.35">
-              <rect x="60" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
-              <rect x="68" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
-              <rect x="76" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
-              <rect x="404" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
-              <rect x="412" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
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-              <rect x="68" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
-              <rect x="404" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
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-              <rect x="68" y="388" width="8" height="8" fill="#FFCBA1" rx="1"/>
-              <rect x="412" y="388" width="8" height="8" fill="#FFCBA1" rx="1"/>
-            </g>
+              <circle cx="240" cy="240" r="220" fill="url(#bg-grad)"/>
 
-            <ellipse cx="240" cy="420" rx="100" ry="10" fill="#EE7623" opacity="0.12"/>
+              <g opacity="0.35">
+                <rect x="60" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="68" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="76" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="404" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="412" y="80" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="68" y="88" width="8" height="8" fill="#FFCBA1" rx="1"/>
+                <rect x="412" y="88" width="8" height="8" fill="#FFCBA1" rx="1"/>
+                <rect x="60" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="68" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="404" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="412" y="380" width="8" height="8" fill="#FA9F5C" rx="1"/>
+                <rect x="68" y="388" width="8" height="8" fill="#FFCBA1" rx="1"/>
+                <rect x="412" y="388" width="8" height="8" fill="#FFCBA1" rx="1"/>
+              </g>
 
-            <g filter="url(#soft-shadow)">
-              <rect x="160" y="240" width="160" height="140" rx="20" fill="#E8E2D5" stroke="#EE7623" stroke-width="3"/>
-              <circle cx="200" cy="280" r="6" fill="#EE7623">
-                <animate attributeName="opacity" values="1;0.3;1" dur="1.8s" repeatCount="indefinite"/>
+              <ellipse cx="240" cy="420" rx="100" ry="10" fill="#EE7623" opacity="0.12"/>
+
+              <g filter="url(#soft-shadow)">
+                <rect x="160" y="240" width="160" height="140" rx="20" fill="#E8E2D5" stroke="#EE7623" stroke-width="3"/>
+                <circle cx="200" cy="280" r="6" fill="#EE7623">
+                  <animate attributeName="opacity" values="1;0.3;1" dur="1.8s" repeatCount="indefinite"/>
+                </circle>
+                <circle cx="200" cy="280" r="6" fill="#EE7623" opacity="0.3"/>
+                <rect x="220" y="276" width="80" height="8" rx="2" fill="#1A1612" opacity="0.15"/>
+                <rect x="220" y="290" width="60" height="6" rx="2" fill="#1A1612" opacity="0.1"/>
+                <circle cx="280" cy="340" r="14" fill="#FAF6EE" stroke="#EE7623" stroke-width="2"/>
+                <circle cx="280" cy="340" r="6" fill="#EE7623"/>
+              </g>
+
+              <g filter="url(#soft-shadow)">
+                <rect x="170" y="100" width="140" height="140" rx="24" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
+              </g>
+
+              <line x1="240" y1="100" x2="240" y2="68" stroke="#EE7623" stroke-width="4" stroke-linecap="round"/>
+              <circle cx="240" cy="60" r="8" fill="#EE7623">
+                <animate attributeName="r" values="6;9;6" dur="2s" repeatCount="indefinite"/>
               </circle>
-              <circle cx="200" cy="280" r="6" fill="#EE7623" opacity="0.3"/>
-              <rect x="220" y="276" width="80" height="8" rx="2" fill="#1A1612" opacity="0.15"/>
-              <rect x="220" y="290" width="60" height="6" rx="2" fill="#1A1612" opacity="0.1"/>
-              <circle cx="280" cy="340" r="14" fill="#FAF6EE" stroke="#EE7623" stroke-width="2"/>
-              <circle cx="280" cy="340" r="6" fill="#EE7623"/>
-            </g>
 
-            <g filter="url(#soft-shadow)">
-              <rect x="170" y="100" width="140" height="140" rx="24" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
-            </g>
+              <g>
+                <path d="M 200 165 Q 210 172 220 165" stroke="#1A1612" stroke-width="4" fill="none" stroke-linecap="round"/>
+                <line x1="195" y1="158" x2="225" y2="155" stroke="#1A1612" stroke-width="2" stroke-linecap="round" opacity="0.5"/>
+                <path d="M 195 158 Q 210 168 225 158" stroke="#1A1612" stroke-width="3" fill="none" stroke-linecap="round"/>
 
-            <line x1="240" y1="100" x2="240" y2="68" stroke="#EE7623" stroke-width="4" stroke-linecap="round"/>
-            <circle cx="240" cy="60" r="8" fill="#EE7623">
-              <animate attributeName="r" values="6;9;6" dur="2s" repeatCount="indefinite"/>
-            </circle>
+                <ellipse cx="260" cy="167" rx="10" ry="12" fill="#FAF6EE" stroke="#1A1612" stroke-width="2"/>
+                <circle cx="263" cy="170" r="5" fill="#1A1612"/>
+                <circle cx="264" cy="167" r="2" fill="#FAF6EE"/>
+              </g>
 
-            <g>
-              <path d="M 200 165 Q 210 172 220 165" stroke="#1A1612" stroke-width="4" fill="none" stroke-linecap="round"/>
-              <line x1="195" y1="158" x2="225" y2="155" stroke="#1A1612" stroke-width="2" stroke-linecap="round" opacity="0.5"/>
-              <path d="M 195 158 Q 210 168 225 158" stroke="#1A1612" stroke-width="3" fill="none" stroke-linecap="round"/>
+              <ellipse cx="190" cy="195" rx="8" ry="4" fill="#FA9F5C" opacity="0.6"/>
+              <ellipse cx="290" cy="195" rx="8" ry="4" fill="#FA9F5C" opacity="0.6"/>
 
-              <ellipse cx="260" cy="167" rx="10" ry="12" fill="#FAF6EE" stroke="#1A1612" stroke-width="2"/>
-              <circle cx="263" cy="170" r="5" fill="#1A1612"/>
-              <circle cx="264" cy="167" r="2" fill="#FAF6EE"/>
-            </g>
+              <ellipse cx="240" cy="210" rx="14" ry="10" fill="#1A1612"/>
+              <ellipse cx="240" cy="212" rx="10" ry="6" fill="#FAF6EE"/>
+              <line x1="240" y1="205" x2="240" y2="218" stroke="#1A1612" stroke-width="1.5" opacity="0.3"/>
 
-            <ellipse cx="190" cy="195" rx="8" ry="4" fill="#FA9F5C" opacity="0.6"/>
-            <ellipse cx="290" cy="195" rx="8" ry="4" fill="#FA9F5C" opacity="0.6"/>
+              <g filter="url(#soft-shadow)">
+                <rect x="120" y="180" width="24" height="80" rx="12" fill="#F5EFE3" stroke="#EE7623" stroke-width="3" transform="rotate(-25 132 220)"/>
+                <circle cx="110" cy="170" r="18" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
+                <line x1="92" y1="160" x2="86" y2="152" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
+                <line x1="98" y1="155" x2="94" y2="145" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
+                <line x1="106" y1="153" x2="104" y2="142" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
+                <line x1="114" y1="156" x2="115" y2="146" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
+                <line x1="120" y1="162" x2="124" y2="155" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
+              </g>
 
-            <ellipse cx="240" cy="210" rx="14" ry="10" fill="#1A1612"/>
-            <ellipse cx="240" cy="212" rx="10" ry="6" fill="#FAF6EE"/>
-            <line x1="240" y1="205" x2="240" y2="218" stroke="#1A1612" stroke-width="1.5" opacity="0.3"/>
+              <g filter="url(#soft-shadow)">
+                <rect x="336" y="220" width="24" height="80" rx="12" fill="#F5EFE3" stroke="#EE7623" stroke-width="3" transform="rotate(30 348 260)"/>
+                <circle cx="358" cy="290" r="16" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
+              </g>
 
-            <g filter="url(#soft-shadow)">
-              <rect x="120" y="180" width="24" height="80" rx="12" fill="#F5EFE3" stroke="#EE7623" stroke-width="3" transform="rotate(-25 132 220)"/>
-              <circle cx="110" cy="170" r="18" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
-              <line x1="92" y1="160" x2="86" y2="152" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
-              <line x1="98" y1="155" x2="94" y2="145" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
-              <line x1="106" y1="153" x2="104" y2="142" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
-              <line x1="114" y1="156" x2="115" y2="146" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
-              <line x1="120" y1="162" x2="124" y2="155" stroke="#EE7623" stroke-width="3" stroke-linecap="round"/>
-            </g>
+              <g transform="translate(330 280)">
+                <ellipse cx="22" cy="28" rx="24" ry="20" fill="#1A1612"/>
+                <ellipse cx="14" cy="22" rx="6" ry="4" fill="#FAF6EE" opacity="0.2"/>
+                <ellipse cx="22" cy="14" rx="20" ry="5" fill="#EE7623"/>
+                <ellipse cx="22" cy="13" rx="18" ry="3" fill="#FFCBA1"/>
+                <rect x="35" y="6" width="8" height="14" rx="2" fill="#8A8580"/>
+                <rect x="36" y="2" width="6" height="6" rx="1" fill="#C8C2B8"/>
+                <ellipse cx="22" cy="11" rx="14" ry="2" fill="#2E7D5B" opacity="0.8"/>
+              </g>
 
-            <g filter="url(#soft-shadow)">
-              <rect x="336" y="220" width="24" height="80" rx="12" fill="#F5EFE3" stroke="#EE7623" stroke-width="3" transform="rotate(30 348 260)"/>
-              <circle cx="358" cy="290" r="16" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
-            </g>
+              <g opacity="0.4">
+                <path d="M 380 270 Q 384 262 380 254" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
+                  <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" repeatCount="indefinite"/>
+                </path>
+                <path d="M 392 270 Q 396 262 392 254" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
+                  <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" begin="0.5s" repeatCount="indefinite"/>
+                </path>
+                <path d="M 386 274 Q 390 266 386 258" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
+                  <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" begin="1s" repeatCount="indefinite"/>
+                </path>
+              </g>
 
-            <g transform="translate(330 280)">
-              <ellipse cx="22" cy="28" rx="24" ry="20" fill="#1A1612"/>
-              <ellipse cx="14" cy="22" rx="6" ry="4" fill="#FAF6EE" opacity="0.2"/>
-              <ellipse cx="22" cy="14" rx="20" ry="5" fill="#EE7623"/>
-              <ellipse cx="22" cy="13" rx="18" ry="3" fill="#FFCBA1"/>
-              <rect x="35" y="6" width="8" height="14" rx="2" fill="#8A8580"/>
-              <rect x="36" y="2" width="6" height="6" rx="1" fill="#C8C2B8"/>
-              <ellipse cx="22" cy="11" rx="14" ry="2" fill="#2E7D5B" opacity="0.8"/>
-            </g>
-
-            <g opacity="0.4">
-              <path d="M 380 270 Q 384 262 380 254" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
-                <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" repeatCount="indefinite"/>
-              </path>
-              <path d="M 392 270 Q 396 262 392 254" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
-                <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" begin="0.5s" repeatCount="indefinite"/>
-              </path>
-              <path d="M 386 274 Q 390 266 386 258" stroke="#8A8580" stroke-width="2" fill="none" stroke-linecap="round">
-                <animate attributeName="opacity" values="0;0.6;0" dur="2.5s" begin="1s" repeatCount="indefinite"/>
-              </path>
-            </g>
-
-            <g filter="url(#soft-shadow)">
-              <rect x="195" y="380" width="30" height="50" rx="10" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
-              <rect x="255" y="380" width="30" height="50" rx="10" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
-              <ellipse cx="210" cy="432" rx="22" ry="8" fill="#EE7623"/>
-              <ellipse cx="270" cy="432" rx="22" ry="8" fill="#EE7623"/>
-            </g>
-          </svg>
+              <g filter="url(#soft-shadow)">
+                <rect x="195" y="380" width="30" height="50" rx="10" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
+                <rect x="255" y="380" width="30" height="50" rx="10" fill="#F5EFE3" stroke="#EE7623" stroke-width="3"/>
+                <ellipse cx="210" cy="432" rx="22" ry="8" fill="#EE7623"/>
+                <ellipse cx="270" cy="432" rx="22" ry="8" fill="#EE7623"/>
+              </g>
+            </svg>
+          </div>
         </div>
 
         <div class="order-1 lg:order-2 text-center lg:text-left">
@@ -158,7 +174,6 @@ import BaseLayout from '@/layouts/BaseLayout.astro';
             </a>
           </div>
 
-          <!-- Server-side include (SSI) — cPanel pone el HTML y Apache lo procesa -->
           <!--#if expr="$REMOTE_ADDR" -->
           <div class="mt-10 pt-6 border-t" style="border-color: var(--hds-line);">
             <p class="text-xs font-semibold tracking-[0.2em] uppercase mb-3" style="color: var(--color-hds-naranja);">