diff --git a/static/css/main.css b/static/css/main.css
index 9a71b10..612e755 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -886,3 +886,11 @@ code {
         transition-duration: 0.01ms !important;
     }
 }
+
+/* ---- Settings Sub-Sidebar ---- */
+.settings-layout { display: flex; gap: 20px; height: 100%; }
+.settings-nav { width: 130px; flex-shrink: 0; overflow-y: auto; position: sticky; top: 0; padding-top: 8px; border-right: 1px solid var(--border-subtle); }
+.settings-nav-item { display: block; padding: 8px 12px; border-radius: var(--radius-md); color: var(--text-secondary); text-decoration: none; font-size: 13px; transition: all var(--transition-fast); margin-bottom: 2px; }
+.settings-nav-item:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
+.settings-nav-item.active { background: var(--accent-light); color: var(--accent); font-weight: 500; }
+.settings-main { flex: 1; overflow-y: auto; min-width: 0; }
diff --git a/static/js/pages/settings.js b/static/js/pages/settings.js
index 891f7b0..906b681 100644
--- a/static/js/pages/settings.js
+++ b/static/js/pages/settings.js
@@ -186,25 +186,37 @@ const PageSettings = {
     },
 
     _template(cfg, games, forwards) {
-        return '<div class="animated"><h2 style="font-size:24px;font-weight:700;margin-bottom:24px">设置</h2>' +
+        const sections = [
+            { id: 'sec-forward', label: '数据转发' },
+            { id: 'sec-connection', label: '连接设置' },
+            { id: 'sec-dashboards', label: '仪表盘管理' },
+            { id: 'sec-plugins', label: '游戏插件' },
+            { id: 'sec-backup', label: '数据备份' },
+            { id: 'sec-dev', label: '开发工具' },
+            { id: 'sec-system', label: '系统' },
+        ];
 
-        '<div class="settings-section"><h3>数据转发</h3><p style="font-size:12px;color:var(--text-tertiary);margin-bottom:12px">将收到的游戏原始 UDP 数据包完整转发到下游物理外设</p><div id="forward-list">' + this._forwardListHtml(forwards) + '</div><div style="display:flex;gap:8px;margin-top:8px"><button id="btn-add-forward" class="btn btn-sm btn-secondary">+ 添加目标</button><button id="btn-save-forwards" class="btn btn-sm btn-primary">保存并生效</button></div></div>' +
+        return '<div class="settings-layout"><div class="settings-nav">' +
+            sections.map(s => '<a class="settings-nav-item" href="#' + s.id + '">' + s.label + '</a>').join('') +
+            '</div><div class="settings-main"><div class="animated"><h2 style="font-size:24px;font-weight:700;margin-bottom:24px">设置</h2>' +
 
-        '<div class="settings-section"><h3>连接设置</h3><div class="settings-row"><div><div class="settings-label">遥测监听端口</div><div class="settings-desc">全局统一端口</div></div><div class="settings-control"><input type="number" id="settings-telemetry-port" value="' + (cfg.telemetry_port||20777) + '" min="1024" max="65535"></div></div><div class="settings-row"><div><div class="settings-label">使用游戏独立端口</div><div class="settings-desc">关闭后切游戏自动切换到各游戏的默认端口</div></div><div class="settings-control"><label class="switch-label"><input type="checkbox" id="settings-unified-port" ' + (cfg.use_unified_port!==false?'checked':'') + '><span class="switch-track"></span></label></div></div><div id="game-ports-section" style="margin-top:8px;padding:12px;background:var(--bg-tertiary);border-radius:8px"><h4 style="font-size:13px;color:var(--text-secondary);margin-bottom:10px">各游戏独立端口</h4>' + this._gamePortListHtml(games, cfg) + '<button id="btn-save-game-ports" class="btn btn-sm btn-primary" style="margin-top:8px">保存端口</button></div><div class="settings-row"><div><div class="settings-label">重启遥测监听</div><div class="settings-desc">手动重启</div></div><div class="settings-control"><button id="settings-restart-telemetry" class="btn btn-secondary btn-sm">重启监听</button></div></div></div>' +
+        '<div class="settings-section" id="sec-forward"><h3>数据转发</h3><p style="font-size:12px;color:var(--text-tertiary);margin-bottom:12px">将收到的游戏原始 UDP 数据包完整转发到下游物理外设</p><div id="forward-list">' + this._forwardListHtml(forwards) + '</div><div style="display:flex;gap:8px;margin-top:8px"><button id="btn-add-forward" class="btn btn-sm btn-secondary">+ 添加目标</button><button id="btn-save-forwards" class="btn btn-sm btn-primary">保存并生效</button></div></div>' +
 
-        '<div class="settings-section"><h3>仪表盘管理</h3><div style="display:flex;gap:8px;margin-bottom:16px"><button id="btn-import-dashboard" class="btn btn-secondary btn-sm">导入 .tsd</button><span style="font-size:12px;color:var(--text-tertiary);display:flex;align-items:center">右键卡片导出</span></div></div>' +
+        '<div class="settings-section" id="sec-connection"><h3>连接设置</h3><div class="settings-row"><div><div class="settings-label">遥测监听端口</div><div class="settings-desc">全局统一端口</div></div><div class="settings-control"><input type="number" id="settings-telemetry-port" value="' + (cfg.telemetry_port||20777) + '" min="1024" max="65535"></div></div><div class="settings-row"><div><div class="settings-label">使用游戏独立端口</div><div class="settings-desc">关闭后切游戏自动切换到各游戏的默认端口</div></div><div class="settings-control"><label class="switch-label"><input type="checkbox" id="settings-unified-port" ' + (cfg.use_unified_port!==false?'checked':'') + '><span class="switch-track"></span></label></div></div><div id="game-ports-section" style="margin-top:8px;padding:12px;background:var(--bg-tertiary);border-radius:8px"><h4 style="font-size:13px;color:var(--text-secondary);margin-bottom:10px">各游戏独立端口</h4>' + this._gamePortListHtml(games, cfg) + '<button id="btn-save-game-ports" class="btn btn-sm btn-primary" style="margin-top:8px">保存端口</button></div><div class="settings-row"><div><div class="settings-label">重启遥测监听</div><div class="settings-desc">手动重启</div></div><div class="settings-control"><button id="settings-restart-telemetry" class="btn btn-secondary btn-sm">重启监听</button></div></div></div>' +
 
-        '<div class="settings-section"><h3>游戏插件管理</h3><div style="display:flex;gap:8px;margin-bottom:16px"><button id="btn-import-plugin" class="btn btn-secondary btn-sm">导入 .tsp</button><button id="btn-reload-plugins" class="btn btn-secondary btn-sm">重新加载</button></div><div id="settings-game-list">' + this._gamePluginListHtml(games) + '</div></div>' +
+        '<div class="settings-section" id="sec-dashboards"><h3>仪表盘管理</h3><div style="display:flex;gap:8px;margin-bottom:16px"><button id="btn-import-dashboard" class="btn btn-secondary btn-sm">导入 .tsd</button><span style="font-size:12px;color:var(--text-tertiary);display:flex;align-items:center">右键卡片导出</span></div></div>' +
 
-        '<div class="settings-section"><h3>数据备份</h3><div class="settings-row"><div><div class="settings-label">导出全量备份</div><div class="settings-desc">打包仪表盘+场景+配置为 .tsb</div></div><div class="settings-control"><button id="btn-export-backup" class="btn btn-secondary btn-sm">下载 .tsb</button></div></div><div class="settings-row"><div><div class="settings-label">恢复备份</div><div class="settings-desc">从 .tsb 文件恢复</div></div><div class="settings-control"><button id="btn-import-backup" class="btn btn-secondary btn-sm">导入 .tsb</button></div></div></div>' +
+        '<div class="settings-section" id="sec-plugins"><h3>游戏插件管理</h3><div style="display:flex;gap:8px;margin-bottom:16px"><button id="btn-import-plugin" class="btn btn-secondary btn-sm">导入 .tsp</button><button id="btn-reload-plugins" class="btn btn-secondary btn-sm">重新加载</button></div><div id="settings-game-list">' + this._gamePluginListHtml(games) + '</div></div>' +
 
-        '<div class="settings-section"><h3>系统</h3><div class="settings-row"><div><div class="settings-label">重启 TurboSu</div><div class="settings-desc">重新加载所有代码和配置</div></div><div class="settings-control"><button id="btn-restart-server" class="btn btn-danger btn-sm">重启服务</button></div></div></div>' +
+        '<div class="settings-section" id="sec-backup"><h3>数据备份</h3><div class="settings-row"><div><div class="settings-label">导出全量备份</div><div class="settings-desc">打包仪表盘+场景+配置为 .tsb</div></div><div class="settings-control"><button id="btn-export-backup" class="btn btn-secondary btn-sm">下载 .tsb</button></div></div><div class="settings-row"><div><div class="settings-label">恢复备份</div><div class="settings-desc">从 .tsb 文件恢复</div></div><div class="settings-control"><button id="btn-import-backup" class="btn btn-secondary btn-sm">导入 .tsb</button></div></div></div>' +
 
-        '<div class="settings-section"><h3>开发工具</h3><div class="settings-row"><div><div class="settings-label">UI 测试模式</div><div class="settings-desc">本地随机模拟遥测数据</div></div><div class="settings-control"><label class="switch-label"><input type="checkbox" id="settings-test-mode" ' + (cfg.ui_test_mode?'checked':'') + '><span class="switch-track"></span></label></div></div></div>' +
+        '<div class="settings-section" id="sec-dev"><h3>开发工具</h3><div class="settings-row"><div><div class="settings-label">UI 测试模式</div><div class="settings-desc">本地随机模拟遥测数据</div></div><div class="settings-control"><label class="switch-label"><input type="checkbox" id="settings-test-mode" ' + (cfg.ui_test_mode?'checked':'') + '><span class="switch-track"></span></label></div></div></div>' +
+
+        '<div class="settings-section" id="sec-system"><h3>系统</h3><div class="settings-row"><div><div class="settings-label">重启 TurboSu</div><div class="settings-desc">重新加载所有代码和配置</div></div><div class="settings-control"><button id="btn-restart-server" class="btn btn-danger btn-sm">重启服务</button></div></div></div>' +
 
         '<div class="settings-section"><h3>关于</h3><div class="settings-row"><div><div class="settings-label">TurboSu</div><div class="settings-desc">赛车遥测仪表盘 · Yei.J. (AskaEth)</div></div></div></div>' +
 
-        '</div>';
+        '</div></div></div>';
     }
 };