diff --git a/src/layouts/Layout.astro b/src/layouts/Layout.astro
index 990252f..154e8b6 100644
--- a/src/layouts/Layout.astro
+++ b/src/layouts/Layout.astro
@@ -16,6 +16,14 @@ function getNavLinkClass(itemId: string) {
 	}
 	return `${baseClass} text-gray-600 hover:text-primary hover:bg-primary/10`;
 }
+
+function getMobileNavLinkClass(itemId: string) {
+	const baseClass = 'flex flex-col items-center justify-center py-2 px-2 min-w-[4.5rem] rounded-xl transition-all duration-300';
+	if (itemId === activeNav) {
+		return `${baseClass} bg-primary text-white`;
+	}
+	return `${baseClass} text-gray-600 hover:bg-primary/10`;
+}
 ---
 
 <html lang="zh-CN">
@@ -28,7 +36,7 @@ function getNavLinkClass(itemId: string) {
 </head>
 <body class="font-inter text-dark bg-slate-50">
 <header id="navbar" class="fixed w-full top-0 z-50 transition-all duration-300 bg-white/95 backdrop-blur-md shadow-lg border-b border-gray-100">
-	<div class="max-w-7xl mx-auto px-4 lg:px-0 py-3 flex items-center justify-between"> 
+	<div class="max-w-7xl mx-auto px-4 lg:px-0 py-3 flex items-center justify-between hidden lg:flex"> 
 		<a href="/" class="flex items-center space-x-3">
 			<img src="/img/logo.png" alt="浙江贝凡 Logo" class="h-10 w-auto"> 
 		</a>
@@ -46,41 +54,109 @@ function getNavLinkClass(itemId: string) {
 			<i class="fa fa-phone"></i>
 			<span>立即咨询</span>
 		</a>
-		<button id="menu-toggle" class="lg:hidden text-gray-800 focus:outline-none p-3 rounded-xl hover:bg-gray-100 border border-gray-200"> 
-			<i class="fa fa-bars text-xl"></i>
-		</button>
 	</div>
 	
-	<div id="mobile-menu" class="hidden lg:hidden bg-white border-t border-gray-200 shadow-xl pb-4">
-		<div class="max-w-7xl mx-auto px-4 pt-4 space-y-2">
+	<!-- Mobile Header - First Row -->
+	<div id="mobile-header-row" class="lg:hidden flex items-center justify-between px-4 py-3 bg-white border-b border-gray-100">
+		<a href="/" class="flex items-center space-x-2">
+			<img src="/img/logo.png" alt="浙江贝凡 Logo" class="h-8 w-auto"> 
+		</a>
+	</div>
+</header>
+
+<!-- Mobile Navigation Row - Separate from header -->
+<div id="mobile-nav-container" class="lg:hidden fixed left-0 right-0 z-40 bg-gray-50 border-b border-gray-200 transition-all duration-300" style="top: 60px;">
+	<div class="flex items-center justify-between px-2 py-2">
+		<div class="flex items-center gap-1 overflow-x-auto no-scrollbar">
 			{
 				navItems.map(item => (
-					<a href={item.href} class={`flex items-center gap-4 p-4 rounded-xl transition-all ${item.id === activeNav ? 'bg-primary/10 border-2 border-primary' : 'hover:bg-gray-50 border-2 border-transparent'}`}>
-						<div class={`w-12 h-12 rounded-xl flex items-center justify-center ${item.id === activeNav ? 'bg-primary' : 'bg-gray-100'}`}>
-							<i class={`fa ${item.icon} text-xl ${item.id === activeNav ? 'text-white' : 'text-gray-600'}`}></i>
-						</div>
-						<div class="flex-1">
-							<span class={`text-base font-bold block ${item.id === activeNav ? 'text-primary' : 'text-gray-800'}`}>{item.label}</span>
-						</div>
-						{
-							item.id === activeNav && <i class="fa fa-check-circle text-primary text-xl"></i>
-						}
+					<a href={item.href} class={getMobileNavLinkClass(item.id)}>
+						<i class={`fa ${item.icon} text-lg mb-1`}></i>
+						<span class="text-xs font-medium whitespace-nowrap">{item.label}</span>
 					</a>
 				))
 			}
-			<a href="/#contact-info" class="flex items-center gap-4 p-4 rounded-xl bg-primary text-white mt-4">
-				<i class="fa fa-phone text-xl"></i>
-				<span class="text-base font-bold">立即咨询</span>
-				<i class="fa fa-arrow-right ml-auto"></i>
-			</a>
 		</div>
+		<a href="/#contact-info" class="flex items-center justify-center py-2 px-3 bg-primary text-white rounded-xl min-w-[3rem] ml-1">
+			<i class="fa fa-phone text-lg"></i>
+		</a>
 	</div>
-</header>
+</div>
+
+<!-- Spacer for mobile to prevent content overlap (header 3.5rem + nav 2.5rem) -->
+<div class="lg:hidden h-[6rem] transition-all duration-300"></div>
+
 <slot />
 <Footer />
-<button id="back-to-top" class="fixed bottom-8 right-8 w-12 h-12 bg-primary rounded-full flex items-center justify-center text-white shadow-lg opacity-0 invisible transition-all duration-300 hover:bg-primary/90">
+
+<button id="back-to-top" class="fixed bottom-8 right-8 w-12 h-12 bg-primary rounded-full flex items-center justify-center text-white shadow-lg opacity-0 invisible transition-all duration-300 hover:bg-primary/90 z-50">
 	<i class="fa fa-arrow-up"></i>
 </button>
+
 <script is:inline src="/js/script.js"></script>
+<script>
+	// Mobile navigation scroll behavior
+	(function() {
+		var navContainer = document.getElementById('mobile-nav-container');
+		var headerRow = document.getElementById('mobile-header-row');
+		var spacer = document.querySelector('.lg\\:hidden.h-\\[6rem\\]');
+		var lastScrollTop = 0;
+		var scrollThreshold = 50;
+		
+		// Set correct top position based on actual header height
+		function updateNavPosition() {
+			if (headerRow && navContainer && window.innerWidth < 1024) {
+				var headerHeight = headerRow.getBoundingClientRect().height;
+				navContainer.style.top = headerHeight + 'px';
+			}
+		}
+		
+		// Update on load and resize
+		updateNavPosition();
+		window.addEventListener('resize', updateNavPosition);
+		window.addEventListener('load', updateNavPosition);
+		
+		window.addEventListener('scroll', function() {
+			var scrollTop = window.pageYOffset || document.documentElement.scrollTop;
+			
+			// Only apply on mobile
+			if (window.innerWidth >= 1024) return;
+			
+			if (scrollTop > lastScrollTop && scrollTop > scrollThreshold) {
+				// Scrolling down - hide second row
+				if (navContainer) {
+					navContainer.style.transform = 'translateY(-100%)';
+					navContainer.style.opacity = '0';
+				}
+				// Reduce spacer height
+				if (spacer) {
+					(spacer as HTMLElement).style.height = '3.5rem';
+				}
+			} else {
+				// Scrolling up - show second row
+				if (navContainer) {
+					navContainer.style.transform = 'translateY(0)';
+					navContainer.style.opacity = '1';
+				}
+				// Restore spacer height
+				if (spacer) {
+					(spacer as HTMLElement).style.height = '6rem';
+				}
+			}
+			
+			lastScrollTop = scrollTop;
+		}, { passive: true });
+	})();
+</script>
+
+<style>
+	.no-scrollbar {
+		-ms-overflow-style: none;
+		scrollbar-width: none;
+	}
+	.no-scrollbar::-webkit-scrollbar {
+		display: none;
+	}
+</style>
 </body>
 </html>
