diff --git a/assets/styling/shadcn.css b/assets/styling/shadcn.css
index 6530a86..acfa02e 100644
--- a/assets/styling/shadcn.css
+++ b/assets/styling/shadcn.css
@@ -1183,3 +1183,238 @@
     color: hsl(var(--muted-foreground));
     font-size: 0.75rem;
 }
+
+.ui-sidebar-layout {
+    background-color: hsl(var(--card));
+    border: 1px solid hsl(var(--border));
+    border-radius: calc(var(--radius) + 0.5rem);
+    box-shadow: var(--shadow-md);
+    display: grid;
+    grid-template-columns: minmax(12rem, 18rem) minmax(0, 1fr);
+    min-height: 20rem;
+    overflow: hidden;
+}
+
+.ui-sidebar {
+    background-color: hsl(var(--card));
+    border-right: 1px solid hsl(var(--border));
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+    padding: 1.25rem;
+    transition: width 0.25s ease;
+    width: 18rem;
+}
+
+.ui-sidebar[data-collapsed="true"] {
+    padding-left: 0.75rem;
+    padding-right: 0.75rem;
+    width: 4.5rem;
+}
+
+.ui-sidebar-header,
+.ui-sidebar-footer {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
+
+.ui-sidebar-footer {
+    border-top: 1px solid hsl(var(--border));
+    margin-top: auto;
+    padding-top: 1rem;
+}
+
+.ui-sidebar-content {
+    display: flex;
+    flex-direction: column;
+    gap: 1.25rem;
+    overflow-y: auto;
+}
+
+.ui-sidebar-group {
+    display: flex;
+    flex-direction: column;
+    gap: 0.75rem;
+}
+
+.ui-sidebar-group-label {
+    color: hsl(var(--muted-foreground));
+    font-size: 0.75rem;
+    font-weight: 600;
+    letter-spacing: 0.08em;
+    text-transform: uppercase;
+}
+
+.ui-sidebar-group-content {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
+
+.ui-sidebar-separator {
+    background-color: hsl(var(--border));
+    border: none;
+    height: 1px;
+    width: 100%;
+}
+
+.ui-sidebar-menu {
+    width: 100%;
+}
+
+.ui-sidebar-menu-list {
+    display: flex;
+    flex-direction: column;
+    gap: 0.25rem;
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+
+.ui-sidebar-menu-item {
+    display: contents;
+}
+
+.ui-sidebar-menu-button {
+    align-items: center;
+    background-color: transparent;
+    border: none;
+    border-radius: calc(var(--radius) - 4px);
+    color: inherit;
+    cursor: pointer;
+    display: flex;
+    gap: 0.75rem;
+    justify-content: flex-start;
+    padding: 0.5rem 0.75rem;
+    text-align: left;
+    text-decoration: none;
+    transition: background-color 0.2s ease, color 0.2s ease;
+    width: 100%;
+}
+
+.ui-sidebar-menu-button:hover {
+    background-color: hsl(var(--muted));
+}
+
+.ui-sidebar-menu-button[data-active="true"] {
+    background-color: hsl(var(--accent));
+    color: hsl(var(--accent-foreground));
+    font-weight: 600;
+}
+
+.ui-sidebar-button-body {
+    align-items: center;
+    display: flex;
+    gap: 0.75rem;
+    width: 100%;
+}
+
+.ui-sidebar-icon {
+    align-items: center;
+    background-color: hsl(var(--accent));
+    border-radius: calc(var(--radius) - 6px);
+    color: hsl(var(--accent-foreground));
+    display: inline-flex;
+    font-size: 1.05rem;
+    height: 2.1rem;
+    justify-content: center;
+    min-width: 2.1rem;
+    width: 2.1rem;
+}
+
+.ui-sidebar-text {
+    display: flex;
+    flex-direction: column;
+    gap: 0.2rem;
+    line-height: 1.2;
+}
+
+.ui-sidebar-label {
+    font-weight: 500;
+}
+
+.ui-sidebar-description {
+    color: hsl(var(--muted-foreground));
+    font-size: 0.75rem;
+}
+
+.ui-sidebar-badge {
+    background-color: hsl(var(--secondary));
+    border-radius: 999px;
+    color: hsl(var(--secondary-foreground));
+    font-size: 0.75rem;
+    font-weight: 500;
+    padding: 0.15rem 0.55rem;
+    white-space: nowrap;
+}
+
+.ui-sidebar-trigger {
+    align-items: center;
+    background-color: transparent;
+    border: 1px solid hsl(var(--border));
+    border-radius: calc(var(--radius) - 4px);
+    color: hsl(var(--muted-foreground));
+    cursor: pointer;
+    display: inline-flex;
+    gap: 0.5rem;
+    padding: 0.35rem 0.75rem;
+    transition: background-color 0.2s ease, color 0.2s ease;
+}
+
+.ui-sidebar-trigger:hover {
+    background-color: hsl(var(--muted));
+    color: hsl(var(--foreground));
+}
+
+.ui-sidebar-trigger-icon {
+    font-size: 0.9rem;
+}
+
+.ui-sidebar-inset {
+    background-color: hsl(var(--muted));
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+    padding: 1.5rem;
+}
+
+.ui-sidebar-rail {
+    align-items: center;
+    display: flex;
+    flex-direction: column;
+    gap: 0.75rem;
+}
+
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-text,
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-description,
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-badge,
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-group-label,
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-trigger-label {
+    display: none;
+}
+
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-menu-button {
+    justify-content: center;
+    padding: 0.5rem;
+}
+
+.ui-sidebar[data-collapsed="true"] .ui-sidebar-icon {
+    background-color: transparent;
+}
+
+@media (max-width: 960px) {
+    .ui-sidebar-layout {
+        grid-template-columns: minmax(0, 1fr);
+    }
+
+    .ui-sidebar {
+        border-bottom: 1px solid hsl(var(--border));
+        border-right: none;
+        width: 100%;
+    }
+
+    .ui-sidebar[data-collapsed="true"] {
+        width: 100%;
+    }
+}
diff --git a/src/components/ui/mod.rs b/src/components/ui/mod.rs
index f4d13bb..a7710cc 100644
--- a/src/components/ui/mod.rs
+++ b/src/components/ui/mod.rs
@@ -26,6 +26,7 @@ mod radio_group;
 mod select;
 mod separator;
 mod sheet;
+mod sidebar;
 mod slider;
 mod steps;
 mod switch;
@@ -58,6 +59,7 @@ pub use radio_group::*;
 pub use select::*;
 pub use separator::*;
 pub use sheet::*;
+pub use sidebar::*;
 pub use slider::*;
 pub use steps::*;
 pub use switch::*;
diff --git a/src/components/ui/sidebar.rs b/src/components/ui/sidebar.rs
new file mode 100644
index 0000000..baf8f6c
--- /dev/null
+++ b/src/components/ui/sidebar.rs
@@ -0,0 +1,325 @@
+use dioxus::prelude::*;
+
+fn merge_class(base: &str, extra: Option<String>) -> String {
+    if let Some(extra) = extra.filter(|extra| !extra.trim().is_empty()) {
+        format!("{base} {}", extra.trim())
+    } else {
+        base.to_string()
+    }
+}
+
+fn data_bool(value: bool) -> &'static str {
+    if value {
+        "true"
+    } else {
+        "false"
+    }
+}
+
+#[component]
+pub fn Sidebar(
+    #[props(default)] collapsed: bool,
+    #[props(into, default)] class: Option<String>,
+    children: Element,
+) -> Element {
+    let classes = merge_class("ui-sidebar", class);
+    rsx! {
+        aside {
+            class: classes,
+            "data-collapsed": data_bool(collapsed),
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarLayout(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-layout", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarInset(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-inset", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarRail(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-rail", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarHeader(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-header", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarContent(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-content", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarFooter(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-footer", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarSeparator(#[props(into, default)] class: Option<String>) -> Element {
+    let classes = merge_class("ui-sidebar-separator", class);
+    rsx! {
+        div {
+            class: classes,
+            role: "separator",
+        }
+    }
+}
+
+#[component]
+pub fn SidebarGroup(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-group", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarGroupLabel(
+    #[props(into, default)] class: Option<String>,
+    children: Element,
+) -> Element {
+    let classes = merge_class("ui-sidebar-group-label", class);
+    rsx! {
+        span {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarGroupContent(
+    #[props(into, default)] class: Option<String>,
+    children: Element,
+) -> Element {
+    let classes = merge_class("ui-sidebar-group-content", class);
+    rsx! {
+        div {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarMenu(#[props(into, default)] class: Option<String>, children: Element) -> Element {
+    let classes = merge_class("ui-sidebar-menu", class);
+    rsx! {
+        nav {
+            class: classes,
+            ul {
+                class: "ui-sidebar-menu-list",
+                {children}
+            }
+        }
+    }
+}
+
+#[component]
+pub fn SidebarMenuItem(
+    #[props(into, default)] class: Option<String>,
+    children: Element,
+) -> Element {
+    let classes = merge_class("ui-sidebar-menu-item", class);
+    rsx! {
+        li {
+            class: classes,
+            {children}
+        }
+    }
+}
+
+#[component]
+pub fn SidebarMenuButton(
+    #[props(into)] label: String,
+    #[props(into, default)] description: Option<String>,
+    #[props(into, default)] badge: Option<String>,
+    #[props(into, default)] icon: Option<String>,
+    #[props(into, default)] href: Option<String>,
+    #[props(default)] active: bool,
+    #[props(into, default)] class: Option<String>,
+    #[props(optional)] on_click: Option<EventHandler<MouseEvent>>,
+) -> Element {
+    let classes = merge_class("ui-sidebar-menu-button", class);
+    let description_text = description.clone();
+    let badge_text = badge.clone();
+    let icon_text = icon
+        .clone()
+        .or_else(|| label.chars().next().map(|character| character.to_string()));
+
+    let handler_for_link = on_click.clone();
+    let handler_for_button = on_click.clone();
+
+    let label_clone = label.clone();
+
+    if let Some(href_value) = href.clone() {
+        rsx! {
+            a {
+                class: classes,
+                href: href_value,
+                "data-active": data_bool(active),
+                onclick: move |event| {
+                    if let Some(handler) = handler_for_link.clone() {
+                        handler.call(event);
+                    }
+                },
+                span { class: "ui-sidebar-button-body",
+                    span {
+                        class: "ui-sidebar-icon",
+                        if let Some(icon_value) = icon_text.clone() {
+                            "{icon_value}"
+                        }
+                    }
+                    span {
+                        class: "ui-sidebar-text",
+                        span { class: "ui-sidebar-label", "{label_clone}" }
+                        if let Some(description_value) = description_text.clone() {
+                            span {
+                                class: "ui-sidebar-description",
+                                "{description_value}"
+                            }
+                        }
+                    }
+                    if let Some(badge_value) = badge_text.clone() {
+                        span {
+                            class: "ui-sidebar-badge",
+                            "{badge_value}"
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        rsx! {
+            button {
+                class: classes,
+                "data-active": data_bool(active),
+                r#type: "button",
+                onclick: move |event| {
+                    if let Some(handler) = handler_for_button.clone() {
+                        handler.call(event);
+                    }
+                },
+                span { class: "ui-sidebar-button-body",
+                    span {
+                        class: "ui-sidebar-icon",
+                        if let Some(icon_value) = icon_text.clone() {
+                            "{icon_value}"
+                        }
+                    }
+                    span {
+                        class: "ui-sidebar-text",
+                        span { class: "ui-sidebar-label", "{label}" }
+                        if let Some(description_value) = description_text.clone() {
+                            span {
+                                class: "ui-sidebar-description",
+                                "{description_value}"
+                            }
+                        }
+                    }
+                    if let Some(badge_value) = badge_text.clone() {
+                        span {
+                            class: "ui-sidebar-badge",
+                            "{badge_value}"
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+#[component]
+pub fn SidebarMenuBadge(
+    #[props(into)] text: String,
+    #[props(into, default)] class: Option<String>,
+) -> Element {
+    let classes = merge_class("ui-sidebar-badge", class);
+    rsx! {
+        span {
+            class: classes,
+            "{text}"
+        }
+    }
+}
+
+#[component]
+pub fn SidebarTrigger(
+    #[props(default)] collapsed: bool,
+    #[props(into, default)] class: Option<String>,
+    #[props(into, default)] label: Option<String>,
+    #[props(optional)] on_toggle: Option<EventHandler<bool>>,
+) -> Element {
+    let classes = merge_class("ui-sidebar-trigger", class);
+    let label_text = label.unwrap_or_else(|| {
+        if collapsed {
+            "展开侧边栏".to_string()
+        } else {
+            "收起侧边栏".to_string()
+        }
+    });
+    let state = !collapsed;
+    let handler = on_toggle.clone();
+
+    rsx! {
+        button {
+            class: classes,
+            r#type: "button",
+            "aria-pressed": data_bool(!collapsed),
+            onclick: move |_| {
+                if let Some(handler) = handler.clone() {
+                    handler.call(state);
+                }
+            },
+            span { class: "ui-sidebar-trigger-icon", if collapsed { "→" } else { "←" } }
+            span { class: "ui-sidebar-trigger-label", "{label_text}" }
+        }
+    }
+}
diff --git a/src/views/home.rs b/src/views/home.rs
index 8dc2c66..ba2374f 100644
--- a/src/views/home.rs
+++ b/src/views/home.rs
@@ -6,8 +6,11 @@ use crate::components::{
         ContextItem, ContextMenu, Crumb, Dialog, DropdownMenu, DropdownMenuItem, HoverCard, Input,
         Label, Menubar, MenubarItem, MenubarMenu, NavigationItem, NavigationMenu, Pagination,
         Popover, Progress, RadioGroup, RadioGroupItem, Select, SelectOption, Separator,
-        SeparatorOrientation, Sheet, SheetSide, Slider, StepItem, Steps, Switch, Tabs, TabsContent,
-        TabsList, TabsTrigger, Textarea, Toast, ToastViewport, Tooltip,
+        SeparatorOrientation, Sheet, SheetSide, Sidebar, SidebarContent, SidebarFooter,
+        SidebarGroup, SidebarGroupContent, SidebarGroupLabel, SidebarHeader, SidebarInset,
+        SidebarLayout, SidebarMenu, SidebarMenuButton, SidebarMenuItem, SidebarSeparator,
+        SidebarTrigger, Slider, StepItem, Steps, Switch, Tabs, TabsContent, TabsList, TabsTrigger,
+        Textarea, Toast, ToastViewport, Tooltip,
     },
     Echo, Hero,
 };
@@ -41,6 +44,8 @@ fn UiShowcase() -> Element {
     let dialog_open = use_signal(|| false);
     let sheet_open = use_signal(|| false);
     let toast_open = use_signal(|| false);
+    let sidebar_collapsed = use_signal(|| false);
+    let sidebar_active = use_signal(|| "analytics".to_string());
     let slider_value_signal = slider_value.clone();
     let slider_value_setter = slider_value.clone();
     let contact_method_signal = contact_method.clone();
@@ -60,6 +65,8 @@ fn UiShowcase() -> Element {
     let dialog_signal = dialog_open.clone();
     let sheet_signal = sheet_open.clone();
     let toast_signal = toast_open.clone();
+    let sidebar_collapsed_setter = sidebar_collapsed.clone();
+    let sidebar_active_setter = sidebar_active.clone();
     let intensity_text = move || format!("Accent intensity: {:.0}%", slider_value_signal());
     let contact_text = move || format!("Preferred contact: {}", contact_method_signal());
     let select_options = vec![
@@ -150,6 +157,34 @@ fn UiShowcase() -> Element {
             .unwrap_or_else(|| "System".to_string())
     };
     let theme_summary = format!("Active theme: {theme_display}");
+    let collapsed_state = sidebar_collapsed();
+    let current_sidebar_value = sidebar_active();
+    let is_analytics_active = current_sidebar_value.as_str() == "analytics";
+    let is_crm_active = current_sidebar_value.as_str() == "crm";
+    let is_billing_active = current_sidebar_value.as_str() == "billing";
+    let is_settings_active = current_sidebar_value.as_str() == "settings";
+    let (sidebar_title, sidebar_body) = match current_sidebar_value.as_str() {
+        "analytics" => (
+            "Analytics overview".to_string(),
+            "Monitor KPI trends, conversion funnels, and health metrics in real time.".to_string(),
+        ),
+        "crm" => (
+            "Customer relationship management".to_string(),
+            "Surface leads, segment accounts, and coordinate follow-ups in one place.".to_string(),
+        ),
+        "billing" => (
+            "Billing & usage".to_string(),
+            "Review invoices, adjust subscription tiers, and reconcile metered usage.".to_string(),
+        ),
+        "settings" => (
+            "Workspace settings".to_string(),
+            "Manage authentication, API tokens, and notification preferences.".to_string(),
+        ),
+        _ => (
+            "Select a section".to_string(),
+            "Pick a destination from the sidebar to preview the content area.".to_string(),
+        ),
+    };
 
     rsx! {
         section {
@@ -396,6 +431,114 @@ fn UiShowcase() -> Element {
                     }
                 }
 
+                Card {
+                    CardHeader {
+                        CardTitle { "Structural navigation" }
+                        CardDescription { "Collapsible sidebar layout with grouped menus." }
+                    }
+                    CardContent {
+                        SidebarLayout {
+                            Sidebar {
+                                collapsed: collapsed_state,
+                                SidebarHeader {
+                                    div { class: "ui-sidebar-button-body",
+                                        span { class: "ui-sidebar-icon", "⚡" }
+                                        span { class: "ui-sidebar-text",
+                                            span { class: "ui-sidebar-label", "Acme HQ" }
+                                            span { class: "ui-sidebar-description", "Operations console" }
+                                        }
+                                    }
+                                }
+                                SidebarContent {
+                                    SidebarGroup {
+                                        SidebarGroupLabel { "Workspace" }
+                                        SidebarGroupContent {
+                                            SidebarMenu {
+                                                SidebarMenuItem {
+                                                SidebarMenuButton {
+                                                        label: "Analytics",
+                                                        description: Some("Track KPIs and trends".into()),
+                                                        icon: Some("📊".into()),
+                                                        active: is_analytics_active,
+                                                        on_click: move |_| {
+                                                            let mut signal = sidebar_active_setter.clone();
+                                                            signal.set("analytics".to_string());
+                                                        },
+                                                    }
+                                                }
+                                                SidebarMenuItem {
+                                                SidebarMenuButton {
+                                                        label: "CRM",
+                                                        description: Some("Manage customer pipeline".into()),
+                                                        icon: Some("👥".into()),
+                                                        active: is_crm_active,
+                                                        on_click: move |_| {
+                                                            let mut signal = sidebar_active_setter.clone();
+                                                            signal.set("crm".to_string());
+                                                        },
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                    SidebarSeparator {}
+                                    SidebarGroup {
+                                        SidebarGroupLabel { "Reporting" }
+                                        SidebarGroupContent {
+                                            SidebarMenu {
+                                                SidebarMenuItem {
+                                                SidebarMenuButton {
+                                                        label: "Billing",
+                                                        description: Some("Invoices, usage, balances".into()),
+                                                        icon: Some("💳".into()),
+                                                        badge: Some("8".into()),
+                                                        active: is_billing_active,
+                                                        on_click: move |_| {
+                                                            let mut signal = sidebar_active_setter.clone();
+                                                            signal.set("billing".to_string());
+                                                        },
+                                                    }
+                                                }
+                                                SidebarMenuItem {
+                                                SidebarMenuButton {
+                                                        label: "Settings",
+                                                        description: Some("Themes, tokens, notifications".into()),
+                                                        icon: Some("⚙️".into()),
+                                                        active: is_settings_active,
+                                                        on_click: move |_| {
+                                                            let mut signal = sidebar_active_setter.clone();
+                                                            signal.set("settings".to_string());
+                                                        },
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                                SidebarFooter {
+                                    SidebarTrigger {
+                                        collapsed: collapsed_state,
+                                        label: Some("Toggle sidebar".to_string()),
+                                        on_toggle: move |next| {
+                                            let mut signal = sidebar_collapsed_setter.clone();
+                                            signal.set(next);
+                                        },
+                                    }
+                                }
+                            }
+                            SidebarInset {
+                                class: "ui-stack",
+                                h3 { style: "font-size: 1.2rem; font-weight: 600;", "{sidebar_title}" }
+                                p {
+                                    style: "color: hsl(var(--muted-foreground)); max-width: 460px;",
+                                    "{sidebar_body}"
+                                }
+                                SpanHelper { "Use the sidebar to swap the focused surface." }
+                            }
+                        }
+                    }
+                }
+
                 Card {
                     CardHeader {
                         CardTitle { "Selection controls" }