src/components/FigmaBanner.tsx

@@ -6,8 +6,10 @@ import {
   type MouseEvent as ReactMouseEvent,
   type PointerEvent as ReactPointerEvent,
 } from "react";
+import { m } from "framer-motion";
 import { useNavigate } from "react-router-dom";
 import { assetUrl, getJSON, itemsOrEmpty, readJSONCache } from "../api";
+import { EASE_OUT } from "../motion";
 import { langQuery, useI18n, type Lang } from "../i18n";
 
 const FIGMA_ASSET_BASE = "/assets/ark-library/figma";
@@ -123,7 +125,11 @@ export function FigmaBanner() {
     if (!scroller) return;
     const target = scroller.children[index] as HTMLElement | undefined;
     if (!target) return;
-    scroller.scrollTo({ left: target.offsetLeft, behavior });
+    // Center the slide in the viewport. On mobile (full-width slides) the
+    // offset is 0 so this matches the previous snap-start behavior.
+    const centerOffset = (scroller.clientWidth - target.offsetWidth) / 2;
+    const left = Math.max(0, target.offsetLeft - centerOffset);
+    scroller.scrollTo({ left, behavior });
   }, []);
 
   const pauseAutoplay = useCallback(() => {
@@ -168,9 +174,10 @@ export function FigmaBanner() {
     if (!scroller) return;
 
     const handleScroll = () => {
-      const width = scroller.clientWidth;
+      const firstChild = scroller.children[0] as HTMLElement | undefined;
-      if (width === 0) return;
+      const slideWidth = firstChild?.offsetWidth ?? scroller.clientWidth;
-      const next = Math.round(scroller.scrollLeft / width);
+      if (slideWidth === 0) return;
+      const next = Math.round(scroller.scrollLeft / slideWidth);
       setActiveIndex((prev) => (prev === next ? prev : next));
     };
 
@@ -238,8 +245,9 @@ export function FigmaBanner() {
       window.setTimeout(() => {
         suppressClickRef.current = false;
       }, 0);
-      const width = scroller.clientWidth || 1;
+      const firstChild = scroller.children[0] as HTMLElement | undefined;
-      const nearest = Math.round(scroller.scrollLeft / width);
+      const slideWidth = firstChild?.offsetWidth || scroller.clientWidth || 1;
+      const nearest = Math.round(scroller.scrollLeft / slideWidth);
       const clamped = Math.max(0, Math.min(slides.length - 1, nearest));
       scroller.style.scrollSnapType = "";
       goTo(clamped, "smooth");
@@ -315,6 +323,7 @@ export function FigmaBanner() {
         aria-label="ARK Library banner"
       >
         {slides.map((slide, index) => {
+          const isActive = index === activeIndex;
           const image = (
             <picture className="block aspect-video w-full overflow-hidden bg-black md:rounded-xl">
               <source media="(max-width: 767px)" srcSet={slide.mobile} />
@@ -330,11 +339,27 @@ export function FigmaBanner() {
               />
             </picture>
           );
+          const animatedImage = (
+            <m.div
+              className="h-full w-full origin-center will-change-transform"
+              animate={{
+                filter: isActive ? "blur(0px)" : "blur(6px)",
+                opacity: isActive ? 1 : 0.55,
+                scale: isActive ? 1 : 0.93,
+              }}
+              transition={{
+                duration: 0.45,
+                ease: EASE_OUT as unknown as number[],
+              }}
+            >
+              {image}
+            </m.div>
+          );
 
           return (
             <div
               key={slide.id}
-              className="relative w-full shrink-0 snap-start"
+              className="relative w-full shrink-0 snap-center md:w-[78%] md:first:ml-[11%] md:last:mr-[11%] lg:w-[72%] lg:first:ml-[14%] lg:last:mr-[14%] xl:w-[60%] xl:first:ml-[20%] xl:last:mr-[20%]"
               role="group"
               aria-roledescription="slide"
               aria-label={`${index + 1} / ${slides.length}`}
@@ -346,10 +371,10 @@ export function FigmaBanner() {
                   rel="noreferrer"
                   onClick={(event) => handleSlideClick(event, slide.linkUrl!)}
                 >
-                  {image}
+                  {animatedImage}
                 </a>
               ) : (
-                image
+                animatedImage
               )}
             </div>
           );

src/components/messageStream/MessageBubble.tsx

@@ -23,7 +23,15 @@ export function pickBubble(post: Post): BubbleComponent {
   return FileDocBubble;
 }
 
-export function MessageBubble({ post }: { post: Post }) {
+export function MessageBubble({
+  post,
+  fluid = false,
+}: {
+  post: Post;
+  /** When true, fill the parent container instead of applying the standalone
+   *  feed max-widths. Used by the desktop 3-column masonry on the home page. */
+  fluid?: boolean;
+}) {
   const Bubble = pickBubble(post);
   const isVisual =
     Bubble === AlbumBubble ||
@@ -34,7 +42,11 @@ export function MessageBubble({ post }: { post: Post }) {
   return (
     <div
       id={`post-${post.id}`}
-      className="mx-auto w-full max-w-[358px] scroll-mt-[82px] md:max-w-[680px] md:scroll-mt-[98px] lg:max-w-[900px] xl:max-w-[1120px]"
+      className={
+        fluid
+          ? "w-full scroll-mt-[82px] md:scroll-mt-[98px]"
+          : "mx-auto w-full max-w-[358px] scroll-mt-[82px] md:max-w-[680px] md:scroll-mt-[98px] lg:max-w-[900px] xl:max-w-[1120px]"
+      }
     >
       <article
         className={`relative w-full overflow-hidden rounded-2xl bg-[#272632] text-left shadow-sm ${

src/layouts/PublicLayout.tsx

@@ -535,7 +535,7 @@ export function PublicLayout() {
           </div>
         </div>
 
-        <div className="mx-auto hidden max-w-[1280px] px-4 py-[15px] min-[440px]:px-5 sm:px-6 md:block md:px-9 xl:px-0">
+        <div className="mx-auto hidden max-w-[1280px] px-4 py-[15px] min-[440px]:px-5 sm:px-6 md:block md:px-9 xl:px-6">
           {/* Single row (md+): logo | scrollable nav (左對齊，可橫向滑動) | 搜尋 + 語言 */}
           <div className="flex h-10 items-center gap-2 min-[1000px]:gap-0 lg:gap-4">
             <div className="flex min-w-0 shrink items-center gap-2.5 text-xl font-bold tracking-wide text-ark-gold">

src/pages/Home/index.tsx

@@ -464,13 +464,25 @@ export function Home() {
                 viewAllLabel={t("viewAll")}
               />
             </div>
-            <div className="mt-2.5 flex flex-col gap-3 md:mt-7">
+            <div className="mt-2.5 flex flex-col gap-3 md:hidden">
               {latestPosts.slice(0, 5).map((post, index) => (
                 <Reveal key={post.id} delay={Math.min(index, 8) * 0.05}>
                   <MessageBubble post={post} />
                 </Reveal>
               ))}
             </div>
+            {/* Desktop: 3-column masonry that matches the Figma layout. */}
+            <div className="mt-7 hidden gap-4 md:block md:columns-3">
+              {latestPosts.map((post, index) => (
+                <Reveal
+                  key={post.id}
+                  delay={Math.min(index, 8) * 0.05}
+                  className="mb-4 break-inside-avoid"
+                >
+                  <MessageBubble post={post} fluid />
+                </Reveal>
+              ))}
+            </div>
           </div>
         </section>
       </Reveal>