feat: 添加快捷导航按钮 🔗

- 右上角添加思源笔记/Gitea/NocoDB快捷入口
- 悬浮设计，支持暗黑模式
- 移动端自适应布局

static/css/style.css

@@ -188,6 +188,138 @@ h1 {
     50% { opacity: 0.5; }
 }
 
+/* 快捷导航栏 */
+.quick-nav {
+    position: fixed;
+    top: 15px;
+    right: 80px;
+    display: flex;
+    gap: 10px;
+    z-index: 99;
+}
+
+.nav-btn {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    padding: 8px 14px;
+    background: rgba(255, 255, 255, 0.9);
+    border: none;
+    border-radius: 20px;
+    font-size: 14px;
+    font-weight: 500;
+    color: #333;
+    text-decoration: none;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+    white-space: nowrap;
+}
+
+[data-theme="dark"] .nav-btn {
+    background: rgba(40, 40, 60, 0.9);
+    color: #e0e0e0;
+}
+
+.nav-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
+}
+
+[data-theme="dark"] .nav-btn:hover {
+    background: rgba(60, 60, 80, 0.95);
+}
+
+/* 移动端导航 */
+@media (max-width: 600px) {
+    .quick-nav {
+        position: absolute;
+        top: auto;
+        bottom: -60px;
+        right: 50%;
+        transform: translateX(50%);
+        background: rgba(255, 255, 255, 0.95);
+        padding: 10px 15px;
+        border-radius: 25px;
+        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
+    }
+    
+    [data-theme="dark"] .quick-nav {
+        background: rgba(40, 40, 60, 0.95);
+    }
+    
+    .nav-btn {
+        padding: 6px 10px;
+        font-size: 12px;
+    }
+}
+
+/* 快捷导航栏 */
+.quick-nav {
+    position: fixed;
+    top: 15px;
+    right: 80px;
+    display: flex;
+    gap: 10px;
+    z-index: 99;
+}
+
+.nav-btn {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    padding: 8px 14px;
+    background: rgba(255, 255, 255, 0.9);
+    border: none;
+    border-radius: 20px;
+    font-size: 14px;
+    font-weight: 500;
+    color: #333;
+    text-decoration: none;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+    white-space: nowrap;
+}
+
+[data-theme="dark"] .nav-btn {
+    background: rgba(40, 40, 60, 0.9);
+    color: #e0e0e0;
+}
+
+.nav-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
+}
+
+[data-theme="dark"] .nav-btn:hover {
+    background: rgba(60, 60, 80, 0.95);
+}
+
+/* 移动端导航 */
+@media (max-width: 600px) {
+    .quick-nav {
+        position: absolute;
+        top: auto;
+        bottom: -60px;
+        right: 50%;
+        transform: translateX(50%);
+        background: rgba(255, 255, 255, 0.95);
+        padding: 10px 15px;
+        border-radius: 25px;
+        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
+    }
+    
+    [data-theme="dark"] .quick-nav {
+        background: rgba(40, 40, 60, 0.95);
+    }
+    
+    .nav-btn {
+        padding: 6px 10px;
+        font-size: 12px;
+    }
+}
+
 /* 主题切换按钮 */
 .theme-toggle {
     position: absolute;