fix: landing, geolocation, and description card

* feat: add step-specific DescriptionCard instructions before user input

Each flow page shows English guidance in muted instruction mode until the user makes a selection, then switches to dynamic summary copy.

Co-authored-by: Cursor <cursoragent@cursor.com>

* feat: polish route page, map geolocation, and landing artwork

Replace landing growth SVGs with flow artwork, align Start Creating with FlowContinueBar, and search nearby florists from the user's current location.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: 이지은 <ijieun@ijieun-ui-MacBookPro.local>
Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/components/ui/Artwork/DescriptionCard.svelte

@@ -1,8 +1,24 @@
 <script>
-	let { title = 'Title', description = 'Description Description Description' } = $props();
+	let {
+		title = 'Title',
+		description = 'Description Description Description',
+		/** instruction: 입력 전 안내 톤 (muted) */
+		mode = 'summary'
+	} = $props();
 </script>
 
 <div class="w-64 max-w-full flex-none border border-line-strong bg-white px-4 py-3 shadow-sm lg:px-6 lg:py-5">
-	<h3 class="text-sm leading-snug font-semibold">{title}</h3>
-	<p class="mt-2 text-xs leading-relaxed">{description}</p>
+	<h3
+		class={['text-sm leading-snug font-semibold', mode === 'instruction' ? 'text-muted' : 'text-ink']}
+	>
+		{title}
+	</h3>
+	<p
+		class={[
+			'mt-2 text-xs',
+			mode === 'instruction' ? 'leading-snug text-muted' : 'leading-relaxed text-ink'
+		]}
+	>
+		{description}
+	</p>
 </div>