diff --git a/src/components/Header.tsx b/src/components/Header.tsx
index deb3ee6..e151c7d 100644
--- a/src/components/Header.tsx
+++ b/src/components/Header.tsx
@@ -1,6 +1,6 @@
 'use client';
 
-import { useState, useEffect, useRef, useSyncExternalStore } from 'react';
+import { useState, useEffect, useRef } from 'react';
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
 import Image from 'next/image';
@@ -15,15 +15,6 @@ const NAV_LINKS = [
 ];
 
 const MOBILE_QUERY = '(max-width: 1023px)';
-const subscribeMobileQuery = (callback: () => void) => {
-  const mql = window.matchMedia(MOBILE_QUERY);
-  mql.addEventListener('change', callback);
-  return () => mql.removeEventListener('change', callback);
-};
-const getMobileSnapshot = () => window.matchMedia(MOBILE_QUERY).matches;
-// Server has no viewport, so it always renders the desktop header; the client's
-// first render must match that to avoid a hydration mismatch.
-const getMobileServerSnapshot = () => false;
 
 export default function Header() {
   const pathname = usePathname();
@@ -87,7 +78,15 @@ export default function Header() {
     href === '/' ? pathname === '/' : pathname.startsWith(href);
 
   // Mobile keeps the original plain white header — the transparent hero overlay is desktop-only.
-  const isMobileViewport = useSyncExternalStore(subscribeMobileQuery, getMobileSnapshot, getMobileServerSnapshot);
+  const [isMobileViewport, setIsMobileViewport] = useState(false);
+
+  useEffect(() => {
+    const mql = window.matchMedia(MOBILE_QUERY);
+    setIsMobileViewport(mql.matches);
+    const update = () => setIsMobileViewport(mql.matches);
+    mql.addEventListener('change', update);
+    return () => mql.removeEventListener('change', update);
+  }, []);
 
   // Every page's hero is built with top clearance for an overlaid header, so let it
   // show through transparently until the user scrolls (desktop only).
diff --git a/src/components/for-people/SpendAnywhereSection.tsx b/src/components/for-people/SpendAnywhereSection.tsx
index d54f6b2..1a60719 100644
--- a/src/components/for-people/SpendAnywhereSection.tsx
+++ b/src/components/for-people/SpendAnywhereSection.tsx
@@ -3,7 +3,6 @@
 import React, { useEffect, useLayoutEffect, useRef } from 'react';
 import { gsap } from 'gsap';
 import { ScrollTrigger } from 'gsap/ScrollTrigger';
-import { PhoneMockupImage } from './PhoneMockup';
 
 if (typeof window !== 'undefined') gsap.registerPlugin(ScrollTrigger);
 
@@ -77,14 +76,76 @@ export default function SpendAnywhereSection() {
             </div>
           </div>
 
-          {/* Right — phone mockup: where to spend */}
+          {/* Right — live LytsUp Spend preview embedded in a real phone frame */}
           <div ref={phoneRef} style={{ display: 'flex', justifyContent: 'center', opacity: 0, width: '100%' }}>
-            <PhoneMockupImage
-              src="/assets/For_people/02_spend-cropped.png"
-              alt="LytsUp Spend screen showing redeem-at categories"
-              floatClassName="spa-phone-shell"
-              aspectRatio={1516 / 3040}
-            />
+            <div
+              className="spa-phone-shell"
+              style={{
+                width: 300, borderRadius: 42, padding: 10,
+                background: 'linear-gradient(160deg, #2a2a2e 0%, #0a0a0c 100%)',
+                boxShadow: '0 60px 120px -24px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,255,255,0.06)',
+                position: 'relative',
+              }}
+            >
+              {/* Screen — locked to a real phone's aspect ratio (~9:19.5) */}
+              <div style={{
+                borderRadius: 32, overflow: 'hidden', background: '#ffffff',
+                position: 'relative', aspectRatio: '9 / 19.5',
+                display: 'flex', flexDirection: 'column',
+              }}>
+                {/* Dynamic island */}
+                <div style={{
+                  position: 'absolute', top: 8, left: '50%', transform: 'translateX(-50%)',
+                  width: 82, height: 22, borderRadius: 14, background: '#000', zIndex: 5,
+                }} />
+                {/* Safe area — reserves the notch strip above the app's top bar */}
+                <div style={{ height: 32, flexShrink: 0, background: '#ffffff' }} />
+                {/* The embed is a responsive Flutter web app. We render it at a
+                    comfortable logical width (390px) and scale it down to fill the
+                    screen exactly, so the UI stays proportioned as designed instead
+                    of cramped at ~260px. The iframe width is exactly the design
+                    width (no horizontal overscan) so the app lays out edge-to-edge
+                    and stays centered — nothing on the right (e.g. the Profile tab)
+                    gets clipped. Flutter's thin right-edge list scrollbar is hidden
+                    by a slim mask strip rather than by cutting into the layout. */}
+                <div className="spa-phone-viewport" style={{ position: 'relative', flex: 1, minHeight: 0, overflow: 'hidden' }}>
+                  <iframe
+                    src="https://anbarasu22004.github.io/lytsup_view/rewards"
+                    title="LytsUp Spend screen live preview"
+                    loading="lazy"
+                    scrolling="no"
+                    className="spa-phone-iframe"
+                    style={{
+                      position: 'absolute', top: 0, left: 0,
+                      border: 'none', display: 'block', background: '#ffffff',
+                      transformOrigin: 'top left',
+                    }}
+                  />
+                  {/* Masks Flutter's canvas-painted scrollbar at the far right edge */}
+                  <div className="spa-scrollbar-mask" aria-hidden />
+                </div>
+              </div>
+              <style>{`
+                @keyframes spaPhoneFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
+                .spa-phone-shell { animation: spaPhoneFloat 7s ease-in-out infinite; }
+                /* --pm-scale = screen width (frame - 2*10px padding) ÷ 390px design width */
+                .spa-phone-shell { --pm-scale: calc(280 / 390); }
+                .spa-phone-iframe {
+                  width: calc(100% / var(--pm-scale));
+                  height: calc(100% / var(--pm-scale));
+                  transform: scale(var(--pm-scale));
+                }
+                .spa-scrollbar-mask {
+                  position: absolute; top: 0; right: 0; z-index: 2;
+                  width: 7px; height: 100%; pointer-events: none;
+                  background: linear-gradient(to right, rgba(255,255,255,0), #ffffff 75%);
+                }
+                @media (prefers-reduced-motion: reduce) { .spa-phone-shell { animation: none !important; } }
+                @media (max-width: 900px) {
+                  .spa-phone-shell { width: 280px !important; --pm-scale: calc(260 / 390); }
+                }
+              `}</style>
+            </div>
           </div>
         </div>
       </div>
diff --git a/src/components/home/TheLoop.tsx b/src/components/home/TheLoop.tsx
index 3678ebe..6201783 100644
--- a/src/components/home/TheLoop.tsx
+++ b/src/components/home/TheLoop.tsx
@@ -1,6 +1,6 @@
 'use client';
 
-import React, { useEffect, useLayoutEffect, useRef, useState, useSyncExternalStore } from 'react';
+import React, { useEffect, useLayoutEffect, useRef, useState } from 'react';
 import { gsap } from 'gsap';
 import { ScrollTrigger } from 'gsap/ScrollTrigger';
 import AnimatedDarkBg from './AnimatedDarkBg';
@@ -13,15 +13,6 @@ if (typeof window !== 'undefined') {
 const useIsomorphicLayoutEffect = typeof window !== 'undefined' ? useLayoutEffect : useEffect;
 
 const MOBILE_QUERY = '(max-width: 768px)';
-const subscribeMobileQuery = (callback: () => void) => {
-  const mql = window.matchMedia(MOBILE_QUERY);
-  mql.addEventListener('change', callback);
-  return () => mql.removeEventListener('change', callback);
-};
-const getMobileSnapshot = () => window.matchMedia(MOBILE_QUERY).matches;
-// Server has no viewport, so it always renders the desktop layout; the client's
-// first render must match that to avoid a hydration mismatch.
-const getMobileServerSnapshot = () => false;
 
 interface Step {
   step: string;
@@ -54,7 +45,15 @@ const IMAGE_PATHS = [
 export default function TheLoop() {
   // Only counts uses state — everything scroll-driven is ref-mutated
   const [counts, setCounts] = useState<number[]>(IMPACTS.map(() => 0));
-  const isMobile = useSyncExternalStore(subscribeMobileQuery, getMobileSnapshot, getMobileServerSnapshot);
+  const [isMobile, setIsMobile] = useState(false);
+
+  useEffect(() => {
+    const mql = window.matchMedia(MOBILE_QUERY);
+    setIsMobile(mql.matches);
+    const update = () => setIsMobile(mql.matches);
+    mql.addEventListener('change', update);
+    return () => mql.removeEventListener('change', update);
+  }, []);
 
   const sectionRef  = useRef<HTMLDivElement>(null);
   const pinRef      = useRef<HTMLDivElement>(null);