refactor(park-desktop): admin 后台新 UI + vision_yolo 手势接入，清理设计文档与安装包，补充工作区规范

backend/static/admin.css

@@ -1265,3 +1265,128 @@ button { font-family: "Poppins", "PingFang SC", sans-serif; cursor: pointer; tra
   font-size: 13px; color: #1d2c44; outline: none;
 }
 .mqtt-input:focus { border-color: #2f6bff; }
+
+/* ============ 弱化连接状态（沉底、紧凑、低调） ============ */
+.conn-card { opacity: 0.88; }
+.conn-card .card-header { padding-bottom: 6px; }
+.conn-card .conn-status { display: flex; flex-wrap: wrap; gap: 6px 22px; }
+.conn-card .conn-row { min-width: 150px; }
+.conn-card .conn-label { font-size: 11px; }
+
+/* ============ 大屏控制：mqtt-group 按操作优先级排序 ============ */
+.mqtt-card { display: flex; flex-direction: column; }
+.mqtt-card .mqtt-group { order: 50; }   /* 未显式设置 order 的组默认靠后 */
+
+/* ============ 手机适配（响应式） ============ */
+@media (max-width: 900px) {
+  .main-grid { grid-template-columns: 1fr; padding: 16px; gap: 16px; }
+}
+@media (max-width: 600px) {
+  .main-grid { padding: 10px; gap: 12px; }
+  .topbar { flex-wrap: wrap; row-gap: 8px; }
+  .topbar-center { order: 3; width: 100%; justify-content: flex-start; }
+  .page-switch-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
+  .mqtt-row { flex-wrap: wrap; gap: 8px; }
+  .page-switch-btn { flex: 1 1 45%; }
+  .form-inline { flex-direction: column; }
+  .form-row { flex-wrap: wrap; }
+  .conn-card .conn-status { flex-direction: column; gap: 6px; }
+  .card { padding: 16px; }
+}
+
+/* ============ 遥控器式快捷控制条 ============ */
+.remote-bar {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 10px 18px;
+  max-width: 1400px;
+  margin: 16px auto 0;
+  padding: 12px 16px;
+  background: var(--surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-md);
+  box-shadow: var(--shadow-card);
+}
+.remote-group { display: flex; gap: 6px; }
+.remote-btn {
+  width: 42px; height: 42px;
+  display: inline-flex; align-items: center; justify-content: center;
+  font-size: 24px; line-height: 1;
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-sm);
+  background: #fff; color: var(--text);
+  cursor: pointer;
+  transition: var(--transition);
+}
+.remote-btn:hover { background: var(--primary-subtle); border-color: var(--primary); color: var(--primary); }
+.remote-target {
+  display: flex; align-items: center; gap: 8px;
+  padding: 5px 12px;
+  background: var(--primary-subtle);
+  border: 1px solid rgba(0,189,125,.2);
+  border-radius: var(--radius-md);
+}
+.remote-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }
+.remote-count { font-size: 11px; color: var(--text-dim); white-space: nowrap; }
+.remote-target select {
+  min-width: 160px;
+  padding: 6px 10px;
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-sm);
+  background: #fff; color: var(--text); font-size: 13px;
+}
+.remote-pages { display: flex; gap: 6px; flex-wrap: wrap; }
+
+@media (max-width: 600px) {
+  .remote-bar { margin: 10px; padding: 10px; }
+  .remote-target { flex: 1 1 100%; }
+  .remote-target select { flex: 1; min-width: 0; }
+}
+
+/* 遥控条：页面切换合并模块 + 分隔线 */
+.remote-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
+.remote-sep { width: 1px; height: 26px; background: var(--border-default); margin: 0 4px; }
+@media (max-width: 600px) {
+  .remote-nav { width: 100%; }
+  .remote-sep { display: none; }
+}
+
+/* ============ 顶部控制模块（选择屏幕 / 页面切换，独立上下排列） ============ */
+.control-stack {
+  max-width: 1400px;
+  margin: 16px auto 0;
+  padding: 0 32px;
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+}
+.control-card { margin: 0; }
+@media (max-width: 600px) {
+  .control-stack { padding: 0 10px; }
+}
+
+/* 页面切换：左右箭头独立一行，与下方页面按钮分隔开 */
+.page-nav-prev {
+  display: flex;
+  gap: 8px;
+  margin-bottom: 12px;
+  padding-bottom: 12px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+.page-nav-links { padding-top: 2px; }
+@media (max-width: 600px) {
+  .page-nav-prev { justify-content: center; }
+  .page-nav-links { justify-content: flex-start; }
+}
+
+/* 卡片图标：继承主题主色（appica color -> currentColor） */
+.card-header .card-icon { color: var(--primary); }
+
+/* 页面按钮：当前激活页高亮 */
+.page-switch-btn.active {
+  background: var(--primary);
+  border-color: var(--primary);
+  color: #fff;
+  box-shadow: 0 2px 8px rgba(0,189,125,0.35);
+}