UI优化：美化顶部按钮为圆形图标，添加交互功能

grid-study/index.html

@@ -10,12 +10,23 @@
     <header class="top-bar">
             <div class="top-bar__brand">
                 <img src="src/avatar_48.png" alt="Logo" class="top-bar__logo">
-                <span>Coldin04 WorkSpace</span>
+                <span>Coldin04 的工作台</span>
             </div>
             
             <div class="top-bar__actions">
-                <button class="top-bar__button">主页</button>
+                <button class="top-bar__button" onclick="window.location.href='https://cold04.com'">
-                <button class="top-bar__button">退出</button>
+                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                        <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
+                        <polyline points="9 22 9 12 15 12 15 22"></polyline>
+                    </svg>
+                </button>
+                <button class="top-bar__button" onclick="alert('你已退出登录（个鬼）')">
+                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                        <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"></path>
+                        <polyline points="16 17 21 12 16 7"></polyline>
+                        <line x1="21" y1="12" x2="9" y2="12"></line>
+                    </svg>
+                </button>
             </div>
             
     </header>
@@ -73,7 +84,7 @@
                         </li>
                         <li class="task-item">
                             <input type="checkbox" id="task2">
-                            <label for="task2" class="task-content">完善个人主页样式</label>
+                            <label for="task2" class="task-content">记得启动原神</label>
                         </li>
                         <li class="task-item">
                             <input type="checkbox" id="task3">
@@ -81,7 +92,7 @@
                         </li>
                         <li class="task-item">
                             <input type="checkbox" id="task4">
-                            <label for="task4" class="task-content">优化移动端体验</label>
+                            <label for="task4" class="task-content">Home可以点</label>
                         </li>
                     </ul>
                 </div>

grid-study/styles.css

@@ -55,20 +55,27 @@ body {
 }
 
 .top-bar__button {
-    padding: 8px 16px;
+    width: 40px;
-    border: 1px solid rgba(0, 0, 0, 0.1);
+    height: 40px;
-    border-radius: 8px;
+    padding: 0;
-    background-color: rgba(255, 255, 255, 0.5);
+    border: none;
-    backdrop-filter: blur(5px);
+    border-radius: 50%;
+    background-color: transparent;
     cursor: pointer;
     font-size: 14px;
     transition: var(--transition);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: #333;
+}
+
+.top-bar__button span {
+    display: none;
 }
 
 .top-bar__button:hover {
-    background-color: rgba(255, 255, 255, 0.8);
+    background-color: rgba(0, 0, 0, 0.05);
-    transform: translateY(-2px);
-    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
 }
 
 .top-bar__button:active {
@@ -386,11 +393,44 @@ body {
 }
 
 .task-item input[type="checkbox"] {
-    width: 18px;
+    appearance: none;
-    height: 18px;
+    -webkit-appearance: none;
+    width: 20px;
+    height: 20px;
+    border: 2px solid #c7c7cc;
+    border-radius: 50%; /* 圆形复选框 */
     margin: 0;
-    accent-color: #0071e3;
+    outline: none;
     cursor: pointer;
+    position: relative;
+    transition: all 0.2s ease;
+    flex-shrink: 0;
+}
+
+.task-item input[type="checkbox"]:checked {
+    background-color: #0071e3;
+    border-color: #0071e3;
+}
+
+.task-item input[type="checkbox"]:checked::after {
+    content: '';
+    position: absolute;
+    top: 45%;
+    left: 50%;
+    width: 9px;
+    height: 5px;
+    border-left: 2px solid white;
+    border-bottom: 2px solid white;
+    transform: translate(-50%, -50%) rotate(-45deg);
+}
+
+.task-item input[type="checkbox"]:hover {
+    border-color: #0071e3;
+    background-color: rgba(0, 113, 227, 0.05);
+}
+
+.task-item input[type="checkbox"]:checked:hover {
+    background-color: #0077ed;
 }
 
 .task-content {