diff --git a/src/main/java/eu/org/biwin/screen/controller/GalleryController.java b/src/main/java/eu/org/biwin/screen/controller/GalleryController.java
index e106a6f..e3a1967 100644
--- a/src/main/java/eu/org/biwin/screen/controller/GalleryController.java
+++ b/src/main/java/eu/org/biwin/screen/controller/GalleryController.java
@@ -21,10 +21,12 @@ import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -153,6 +155,15 @@ public class GalleryController {
         File currentFolder = new File(rootPath, path);
         String rootAbsolutePath = new File(rootPath).getAbsolutePath();
 
+        Set<String> cartItemIds = Collections.emptySet();
+        if (StpUtil.isLogin() && ((String) StpUtil.getLoginId()).startsWith("user-")) {
+            String loginId = (String) StpUtil.getLoginId();
+            String authCode = loginId.substring(5);
+            cartItemIds = jdbcTemplate.queryForList("SELECT item_id FROM cart_items WHERE auth_code = ?", String.class, authCode)
+                                      .stream()
+                                      .collect(Collectors.toSet());
+        }
+
         List<Map<String, String>> folders = new ArrayList<>();
         Map<String, Map<String, File>> groupedFiles = new HashMap<>();
 
@@ -176,6 +187,7 @@ public class GalleryController {
             }
         }
 
+        Set<String> finalCartItemIds = cartItemIds;
         List<ImageGroup> imageGroups = groupedFiles.entrySet().stream()
                 .map(entry -> {
                     String uniqueId = entry.getKey();
@@ -183,6 +195,7 @@ public class GalleryController {
                     Map<String, File> typeMap = entry.getValue();
 
                     ImageGroup group = new ImageGroup(uniqueId, displayName);
+                    group.setInCart(finalCartItemIds.contains(uniqueId));
 
                     java.util.function.Function<File, String> getUrl = (file) -> {
                         if (file == null) return null;
diff --git a/src/main/java/eu/org/biwin/screen/model/ImageGroup.java b/src/main/java/eu/org/biwin/screen/model/ImageGroup.java
index af382b9..60feabf 100644
--- a/src/main/java/eu/org/biwin/screen/model/ImageGroup.java
+++ b/src/main/java/eu/org/biwin/screen/model/ImageGroup.java
@@ -8,6 +8,7 @@ public class ImageGroup {
     private String effectImageUrl;
     private String templateThumbnailUrl;
     private String templateImageUrl;
+    private boolean inCart;
 
     public ImageGroup(String id, String name) {
         this.id = id;
@@ -63,4 +64,12 @@ public class ImageGroup {
     public void setTemplateImageUrl(String templateImageUrl) {
         this.templateImageUrl = templateImageUrl;
     }
+
+    public boolean isInCart() {
+        return inCart;
+    }
+
+    public void setInCart(boolean inCart) {
+        this.inCart = inCart;
+    }
 }
diff --git a/src/main/resources/templates/admin.html b/src/main/resources/templates/admin.html
index ea05330..7d70f18 100644
--- a/src/main/resources/templates/admin.html
+++ b/src/main/resources/templates/admin.html
@@ -4,24 +4,66 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>管理后台</title>
+    <script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
     <style>
-        body { font-family: sans-serif; background-color: #f4f6f8; margin: 0; display: flex; height: 100vh; }
-        .sidebar { width: 280px; background: #fff; box-shadow: 2px 0 5px rgba(0,0,0,0.1); padding: 20px; overflow-y: auto; }
-        .main-content { flex-grow: 1; padding: 20px; overflow-y: auto; }
+        :root {
+            --primary-color: #007bff; /* Blue shade */
+            --bg-color: #e9f5ff; /* Light blue background */
+            --glass-bg: rgba(255, 255, 255, 0.6);
+            --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
+        }
+
+        body {
+            font-family: sans-serif;
+            background-color: var(--bg-color);
+            margin: 0;
+            display: flex;
+            height: 100vh;
+        }
+
+        #particles-js {
+            position: fixed;
+            width: 100%;
+            height: 100%;
+            z-index: 0;
+        }
+
+        .sidebar {
+            position: relative;
+            z-index: 1;
+            width: 280px;
+            background: var(--glass-bg);
+            backdrop-filter: blur(10px);
+            box-shadow: 2px 0 5px rgba(0,0,0,0.1);
+            padding: 20px;
+            overflow-y: auto;
+        }
+
+        .main-content {
+            position: relative;
+            z-index: 1;
+            flex-grow: 1;
+            padding: 20px;
+            overflow-y: auto;
+        }
+
         .code-list-item { padding: 12px; border-bottom: 1px solid #eee; cursor: pointer; border-radius: 6px; }
-        .code-list-item:hover, .code-list-item.active { background-color: #e9f5ff; }
+        .code-list-item:hover, .code-list-item.active { background-color: #d1e7fd; }
         .code-list-item strong { font-size: 14px; color: #333; }
         .code-list-item span { font-size: 12px; color: #777; display: block; margin-top: 4px; }
         .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 15px; margin-top: 20px; }
-        .grid-item { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 16px rgba(0,0,0,0.05); }
+        .grid-item { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: var(--card-shadow); }
         .grid-item img { width: 100%; height: auto; display: block; }
         .grid-item-info { padding: 10px; font-size: 12px; text-align: center; }
-        #download-btn { background: #28a745; color: white; border: none; padding: 12px 20px; border-radius: 8px; cursor: pointer; font-size: 16px; display: none; margin-bottom: 20px; }
+        #download-btn { background: var(--primary-color); color: white; border: none; padding: 12px 20px; border-radius: 8px; cursor: pointer; font-size: 16px; display: none; margin-bottom: 20px; }
+        #download-btn:hover { background: #0056b3; }
         #download-btn:disabled { background: #999; }
     </style>
 </head>
 <body>
 
+<div id="particles-js"></div>
+
 <div class="sidebar" id="sidebar">
     <h3>授权码列表</h3>
     <div id="code-list"></div>
@@ -126,7 +168,27 @@
         }
     };
 
-    document.addEventListener('DOMContentLoaded', fetchAuthCodes);
+    document.addEventListener('DOMContentLoaded', () => {
+        fetchAuthCodes();
+
+        particlesJS('particles-js', {
+            "particles": {
+                "number": { "value": 80, "density": { "enable": true, "value_area": 800 } },
+                "color": { "value": "#007bff" },
+                "shape": { "type": "circle", "stroke": { "width": 0, "color": "#000000" }, "polygon": { "nb_sides": 5 } },
+                "opacity": { "value": 0.5, "random": false, "anim": { "enable": false, "speed": 1, "opacity_min": 0.1, "sync": false } },
+                "size": { "value": 3, "random": true, "anim": { "enable": false, "speed": 40, "size_min": 0.1, "sync": false } },
+                "line_linked": { "enable": true, "distance": 150, "color": "#007bff", "opacity": 0.4, "width": 1 },
+                "move": { "enable": true, "speed": 6, "direction": "none", "random": false, "straight": false, "out_mode": "out", "bounce": false, "attract": { "enable": false, "rotateX": 600, "rotateY": 1200 } }
+            },
+            "interactivity": {
+                "detect_on": "canvas",
+                "events": { "onhover": { "enable": true, "mode": "repulse" }, "onclick": { "enable": true, "mode": "push" }, "resize": true },
+                "modes": { "grab": { "distance": 400, "line_linked": { "opacity": 1 } }, "bubble": { "distance": 400, "size": 40, "duration": 2, "opacity": 8, "speed": 3 }, "repulse": { "distance": 200, "duration": 0.4 }, "push": { "particles_nb": 4 }, "remove": { "particles_nb": 2 } }
+            },
+            "retina_detect": true
+        });
+    });
 </script>
 
 </body>
diff --git a/src/main/resources/templates/cart.html b/src/main/resources/templates/cart.html
index d1ecd3a..95db768 100644
--- a/src/main/resources/templates/cart.html
+++ b/src/main/resources/templates/cart.html
@@ -6,13 +6,42 @@
     <title>我的购物车</title>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/viewerjs/1.11.6/viewer.min.css">
     <script src="https://cdnjs.cloudflare.com/ajax/libs/viewerjs/1.11.6/viewer.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
     <style>
-        body { font-family: sans-serif; background-color: #f0f2f5; margin: 0; }
-        .navbar { background: #fff; padding: 10px 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); display: flex; align-items: center; }
-        .navbar a { text-decoration: none; color: #007bff; font-weight: bold; margin-right: 20px; }
-        .main-content { padding: 20px; max-width: 1600px; margin: auto; }
+        :root {
+            --primary-color: #28a745; /* Green shade */
+            --bg-color: #e8f5e9; /* Light green background */
+            --glass-bg: rgba(255, 255, 255, 0.6);
+            --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
+        }
+
+        body {
+            font-family: sans-serif;
+            background-color: var(--bg-color);
+            margin: 0;
+        }
+
+        #particles-js {
+            position: fixed;
+            width: 100%;
+            height: 100%;
+            z-index: 0;
+        }
+
+        .navbar {
+            position: relative;
+            z-index: 1;
+            background: var(--glass-bg);
+            backdrop-filter: blur(10px);
+            padding: 10px 20px;
+            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+            display: flex;
+            align-items: center;
+        }
+        .navbar a { text-decoration: none; color: var(--primary-color); font-weight: bold; margin-right: 20px; }
+        .main-content { position: relative; z-index: 1; padding: 20px; max-width: 1600px; margin: auto; }
         .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
-        .grid-item { position: relative; background: #fff; border-radius: 15px; overflow: hidden; box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07); }
+        .grid-item { position: relative; background: #fff; border-radius: 15px; overflow: hidden; box-shadow: var(--card-shadow); }
         .grid-item img { width: 100%; height: auto; display: block; cursor: zoom-in; }
         .image-info { padding: 12px; font-size: 12px; text-align: center; }
         .loading-status { text-align: center; padding: 40px; color: #999; }
@@ -41,9 +70,11 @@
 </head>
 <body>
 
+<div id="particles-js"></div>
+
 <div class="navbar">
     <a href="/">返回主页</a>
-    <a id="admin-link" href="/admin" style="display: none;">管理后台</a>
+    <a id="admin-link" href="/api/admin" style="display: none;">管理后台</a>
 </div>
 
 <div class="main-content">
@@ -74,7 +105,6 @@
             items.forEach(item => {
                 const gridItem = document.createElement('div');
                 gridItem.className = 'grid-item';
-                // **[FIX]** Use a data attribute to reliably store the original ID.
                 gridItem.dataset.itemId = item.id;
                 gridItem.innerHTML = `
                     <button class="delete-btn" data-id="${item.id}" title="从购物车移除">×</button>
@@ -105,7 +135,6 @@
             });
 
             if (response.ok) {
-                // **[FIX]** Use a robust attribute selector to find the correct element.
                 const itemElement = document.querySelector(`.grid-item[data-item-id="${itemId}"]`);
                 if (itemElement) {
                     itemElement.style.transition = 'opacity 0.5s, transform 0.5s';
@@ -138,7 +167,29 @@
     });
 
     async function checkUserRole() { try { const res = await fetch('/api/auth/info'); if (res.ok) { const data = await res.json(); if (data.role === 'admin') { document.getElementById('admin-link').style.display = 'block'; } } } catch (e) { /* Ignore */ } }
-    document.addEventListener('DOMContentLoaded', () => { checkUserRole(); fetchCartItems(); });
+
+    document.addEventListener('DOMContentLoaded', () => {
+        checkUserRole();
+        fetchCartItems();
+
+        particlesJS('particles-js', {
+            "particles": {
+                "number": { "value": 80, "density": { "enable": true, "value_area": 800 } },
+                "color": { "value": "#28a745" },
+                "shape": { "type": "circle", "stroke": { "width": 0, "color": "#000000" }, "polygon": { "nb_sides": 5 } },
+                "opacity": { "value": 0.5, "random": false, "anim": { "enable": false, "speed": 1, "opacity_min": 0.1, "sync": false } },
+                "size": { "value": 3, "random": true, "anim": { "enable": false, "speed": 40, "size_min": 0.1, "sync": false } },
+                "line_linked": { "enable": true, "distance": 150, "color": "#28a745", "opacity": 0.4, "width": 1 },
+                "move": { "enable": true, "speed": 6, "direction": "none", "random": false, "straight": false, "out_mode": "out", "bounce": false, "attract": { "enable": false, "rotateX": 600, "rotateY": 1200 } }
+            },
+            "interactivity": {
+                "detect_on": "canvas",
+                "events": { "onhover": { "enable": true, "mode": "repulse" }, "onclick": { "enable": true, "mode": "push" }, "resize": true },
+                "modes": { "grab": { "distance": 400, "line_linked": { "opacity": 1 } }, "bubble": { "distance": 400, "size": 40, "duration": 2, "opacity": 8, "speed": 3 }, "repulse": { "distance": 200, "duration": 0.4 }, "push": { "particles_nb": 4 }, "remove": { "particles_nb": 2 } }
+            },
+            "retina_detect": true
+        });
+    });
 </script>
 
 </body>
diff --git a/src/main/resources/templates/index.html b/src/main/resources/templates/index.html
index 2bca0bf..4cd83e8 100644
--- a/src/main/resources/templates/index.html
+++ b/src/main/resources/templates/index.html
@@ -7,12 +7,13 @@
     <title>云端私密相册 - 模板图片挑选</title>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/viewerjs/1.11.6/viewer.min.css">
     <script src="https://cdnjs.cloudflare.com/ajax/libs/viewerjs/1.11.6/viewer.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
 
     <style>
         :root {
-            --primary-color: #007bff;
-            --bg-color: #f0f2f5;
-            --glass-bg: rgba(255, 255, 255, 0.7);
+            --primary-color: #28a745; /* Green shade */
+            --bg-color: #e8f5e9; /* Light green background */
+            --glass-bg: rgba(255, 255, 255, 0.6);
             --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
         }
 
@@ -25,11 +26,20 @@
             overflow-x: hidden;
         }
 
+        #particles-js {
+            position: fixed;
+            width: 100%;
+            height: 100%;
+            z-index: 0;
+        }
+
         .main-content { position: relative; z-index: 1; padding: 30px 5%; max-width: 1600px; margin: 0 auto; }
-        .breadcrumb { padding: 15px 25px; background: var(--glass-bg); backdrop-filter: blur(10px); margin-bottom: 30px; border-radius: 15px; box-shadow: var(--card-shadow); font-size: 14px; }
+        .breadcrumb { display: flex; justify-content: space-between; align-items: center; padding: 15px 25px; background: var(--glass-bg); backdrop-filter: blur(10px); margin-bottom: 30px; border-radius: 15px; box-shadow: var(--card-shadow); font-size: 14px; }
         .breadcrumb a { color: var(--primary-color); text-decoration: none; font-weight: 500; }
-        .breadcrumb a:hover { color: #0056b3; }
+        .breadcrumb a:hover { color: #1e7e34; }
         .breadcrumb span { margin: 0 10px; color: #abb2bf; }
+        .admin-link { background-color: var(--primary-color); color: white !important; padding: 8px 15px; border-radius: 8px; text-decoration: none; font-weight: 500; }
+        .admin-link:hover { background-color: #1e7e34; }
         .folder-container { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 20px; margin-bottom: 40px; }
         .folder-card { background: var(--glass-bg); backdrop-filter: blur(8px); padding: 20px; border-radius: 18px; text-align: center; cursor: pointer; box-shadow: var(--card-shadow); border: 1px solid rgba(255, 255, 255, 0.4); transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); }
         .folder-card:hover { transform: translateY(-5px); box-shadow: 0 12px 40px rgba(0,0,0,0.1); }
@@ -40,13 +50,15 @@
         .grid-item:hover { transform: scale(1.02); z-index: 10; }
         .grid-item img { width: 100%; height: auto; display: block; cursor: zoom-in; }
         .image-info { padding: 12px; font-size: 12px; color: #666; text-align: center; background: #fff; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-        .add-to-cart-btn { position: absolute; bottom: 10px; right: 10px; background: rgba(0, 123, 255, 0.8); color: white; border: none; border-radius: 50px; width: 40px; height: 40px; cursor: pointer; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2); opacity: 0; transform: scale(0.8); transition: opacity 0.2s ease, transform 0.2s ease; z-index: 5; display: flex; align-items: center; justify-content: center; }
+        .add-to-cart-btn { position: absolute; bottom: 10px; right: 10px; background: rgba(40, 167, 69, 0.8); color: white; border: none; border-radius: 50px; width: 40px; height: 40px; cursor: pointer; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2); opacity: 0; transform: scale(0.8); transition: opacity 0.2s ease, transform 0.2s ease; z-index: 5; display: flex; align-items: center; justify-content: center; }
         .grid-item:hover .add-to-cart-btn { opacity: 1; transform: scale(1); }
-        .add-to-cart-btn:hover { background: #0056b3; transform: scale(1.1); }
+        .add-to-cart-btn:hover { background: #1e7e34; transform: scale(1.1); }
+        .add-to-cart-btn.in-cart { background: #218838; cursor: not-allowed; }
+        .in-cart-badge { position: absolute; top: 10px; left: 10px; background: #28a745; color: white; padding: 5px 8px; border-radius: 5px; font-size: 12px; z-index: 5; }
         .loading-status { text-align: center; padding: 40px; color: #999; font-size: 14px; }
 
-        .fab-cart { position: fixed; bottom: 40px; right: 40px; width: 60px; height: 60px; background-color: var(--primary-color); color: white; border-radius: 50%; border: none; box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4); display: none; align-items: center; justify-content: center; cursor: pointer; z-index: 1000; transition: all 0.3s; }
-        .fab-cart:hover { transform: scale(1.1); background-color: #0056b3; }
+        .fab-cart { position: fixed; bottom: 40px; right: 40px; width: 60px; height: 60px; background-color: var(--primary-color); color: white; border-radius: 50%; border: none; box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4); display: none; align-items: center; justify-content: center; cursor: pointer; z-index: 1000; transition: all 0.3s; }
+        .fab-cart:hover { transform: scale(1.1); background-color: #1e7e34; }
         .fab-cart.show { display: flex; }
 
         #toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; align-items: flex-end; }
@@ -59,10 +71,14 @@
 </head>
 <body>
 
+<div id="particles-js"></div>
 <div id="toast-container"></div>
 
 <div class="main-content">
-    <div class="breadcrumb" id="breadcrumb"></div>
+    <div class="breadcrumb" id="breadcrumb">
+        <div id="breadcrumb-links"></div>
+        <a id="admin-link" class="admin-link" href="/api/admin" style="display: none;">后台管理</a>
+    </div>
     <div class="folder-container" id="folder-list"></div>
     <div class="grid" id="image-grid"></div>
     <div id="loader" class="loading-status">正在探索云端内容...</div>
@@ -106,6 +122,8 @@
                 currentUserRole = data.role;
                 if (currentUserRole === 'user') {
                     document.getElementById('fab-cart').classList.add('show');
+                } else if (currentUserRole === 'admin') {
+                    document.getElementById('admin-link').style.display = 'block';
                 }
             } else {
                 handleAuthError();
@@ -167,7 +185,7 @@
     }
 
     function renderBreadcrumb(path) {
-        const bc = document.getElementById('breadcrumb');
+        const bc = document.getElementById('breadcrumb-links');
         bc.innerHTML = `<a onclick="loadLevel('')">🏠 根目录</a>`;
         let parts = path.split('/').filter(p => p);
         let fullPath = "";
@@ -204,8 +222,20 @@
             const effectImageUrl = group.effectImageUrl ? `/raw${group.effectImageUrl}` : '';
             const displayName = cleanString(group.name);
             const itemId = cleanString(group.id);
-            const cartButtonHtml = currentUserRole === 'user' ? `<button class="add-to-cart-btn" data-id="${itemId}" title="加入购物车"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" viewBox="0 0 16 16"><path d="M.5 1a.5.5 0 0 0 0 1h1.11l.401 1.607 1.498 7.985A.5.5 0 0 0 4 12h1a2 2 0 1 0 0 4 2 2 0 0 0 0-4h7a2 2 0 1 0 0 4 2 2 0 0 0 0-4h1a.5.5 0 0 0 .491-.408l1.5-8A.5.5 0 0 0 14.5 3H2.89l-.405-1.621A.5.5 0 0 0 2 1zM6 14a1 1 0 1 1-2 0 1 1 0 0 1 2 0m7 0a1 1 0 1 1-2 0 1 1 0 0 1 2 0M9 5.5V7h1.5a.5.5 0 0 1 0 1H9v1.5a.5.5 0 0 1-1 0V8H6.5a.5.5 0 0 1 0-1H8V5.5a.5.5 0 0 1 1 0"/></svg></button>` : '';
-            item.innerHTML = `<img src="${effectThumbUrl}" data-original="${effectImageUrl}" alt="${displayName}" />${cartButtonHtml}<div class="image-info">${displayName}</div>`;
+
+            let cartButtonHtml = '';
+            let inCartBadgeHtml = '';
+
+            if (currentUserRole === 'user') {
+                if (group.inCart) {
+                    inCartBadgeHtml = '<div class="in-cart-badge">✔️</div>';
+                    cartButtonHtml = `<button class="add-to-cart-btn in-cart" data-id="${itemId}" title="已在购物车" disabled><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" viewBox="0 0 16 16"><path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/></svg></button>`;
+                } else {
+                    cartButtonHtml = `<button class="add-to-cart-btn" data-id="${itemId}" title="加入购物车"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" viewBox="0 0 16 16"><path d="M.5 1a.5.5 0 0 0 0 1h1.11l.401 1.607 1.498 7.985A.5.5 0 0 0 4 12h1a2 2 0 1 0 0 4 2 2 0 0 0 0-4h7a2 2 0 1 0 0 4 2 2 0 0 0 0-4h1a.5.5 0 0 0 .491-.408l1.5-8A.5.5 0 0 0 14.5 3H2.89l-.405-1.621A.5.5 0 0 0 2 1zM6 14a1 1 0 1 1-2 0 1 1 0 0 1 2 0m7 0a1 1 0 1 1-2 0 1 1 0 0 1 2 0M9 5.5V7h1.5a.5.5 0 0 1 0 1H9v1.5a.5.5 0 0 1-1 0V8H6.5a.5.5 0 0 1 0-1H8V5.5a.5.5 0 0 1 1 0"/></svg></button>`;
+                }
+            }
+
+            item.innerHTML = `${inCartBadgeHtml}<img src="${effectThumbUrl}" data-original="${effectImageUrl}" alt="${displayName}" />${cartButtonHtml}<div class="image-info">${displayName}</div>`;
             grid.appendChild(item);
         });
         if (viewer) {
@@ -223,7 +253,7 @@
     async function handleAddToCart(itemId) {
         console.log(`Adding item ${itemId} to cart.`);
         try {
-            const response = await fetch('/api/cart/add', { // **[PATH-FIX]** Reverted to /api/cart/add
+            const response = await fetch('/api/cart/add', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({ itemId: itemId })
@@ -234,6 +264,20 @@
                     showToast(result, 'info');
                 } else {
                     showToast(result, 'success');
+                    const button = document.querySelector(`.add-to-cart-btn[data-id="${itemId}"]`);
+                    if(button){
+                        button.classList.add('in-cart');
+                        button.disabled = true;
+                        button.title = "已在购物车";
+                        button.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" viewBox="0 0 16 16"><path d="M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z"/></svg>';
+                        const item = button.closest('.grid-item');
+                        if(item && !item.querySelector('.in-cart-badge')){
+                            const badge = document.createElement('div');
+                            badge.className = 'in-cart-badge';
+                            badge.textContent = '✔️';
+                            item.prepend(badge);
+                        }
+                    }
                 }
             } else if (response.status === 401) {
                 handleAuthError();
@@ -249,12 +293,30 @@
         await fetchUserInfo();
         document.getElementById('image-grid').addEventListener('click', function(event) {
             const cartButton = event.target.closest('.add-to-cart-btn');
-            if (cartButton) {
+            if (cartButton && !cartButton.disabled) {
                 event.stopPropagation();
                 handleAddToCart(cartButton.dataset.id);
             }
         });
         loadLevel("");
+
+        particlesJS('particles-js', {
+            "particles": {
+                "number": { "value": 80, "density": { "enable": true, "value_area": 800 } },
+                "color": { "value": "#28a745" },
+                "shape": { "type": "circle", "stroke": { "width": 0, "color": "#000000" }, "polygon": { "nb_sides": 5 } },
+                "opacity": { "value": 0.5, "random": false, "anim": { "enable": false, "speed": 1, "opacity_min": 0.1, "sync": false } },
+                "size": { "value": 3, "random": true, "anim": { "enable": false, "speed": 40, "size_min": 0.1, "sync": false } },
+                "line_linked": { "enable": true, "distance": 150, "color": "#28a745", "opacity": 0.4, "width": 1 },
+                "move": { "enable": true, "speed": 6, "direction": "none", "random": false, "straight": false, "out_mode": "out", "bounce": false, "attract": { "enable": false, "rotateX": 600, "rotateY": 1200 } }
+            },
+            "interactivity": {
+                "detect_on": "canvas",
+                "events": { "onhover": { "enable": true, "mode": "repulse" }, "onclick": { "enable": true, "mode": "push" }, "resize": true },
+                "modes": { "grab": { "distance": 400, "line_linked": { "opacity": 1 } }, "bubble": { "distance": 400, "size": 40, "duration": 2, "opacity": 8, "speed": 3 }, "repulse": { "distance": 200, "duration": 0.4 }, "push": { "particles_nb": 4 }, "remove": { "particles_nb": 2 } }
+            },
+            "retina_detect": true
+        });
     }
 
     initializeApp();