diff --git a/MMM-NextcloudCookbook.js b/MMM-NextcloudCookbook.js
index a2b53ea..7382754 100644
--- a/MMM-NextcloudCookbook.js
+++ b/MMM-NextcloudCookbook.js
@@ -28,9 +28,17 @@ Module.register("MMM-NextcloudCookbook", {
 
   socketNotificationReceived(notification, payload) {
     if (notification !== "STATE") return;
+    const previous = this.state;
     this.state = payload;
     this.setRecipeMode(Boolean(payload.active));
-    this.updateDom(this.config.animationSpeed);
+    const requiresDomUpdate = previous.active !== payload.active
+      || previous.recipeId !== payload.recipeId
+      || previous.portions !== payload.portions
+      || previous.theme !== payload.theme
+      || previous.error !== payload.error
+      || previous.recipe?.recipeYield !== payload.recipe?.recipeYield;
+    if (requiresDomUpdate) this.updateDom(this.config.animationSpeed);
+    else this.updateProgressDom();
   },
 
   notificationReceived(notification) {
@@ -86,6 +94,24 @@ Module.register("MMM-NextcloudCookbook", {
     }
   },
 
+  updateProgressDom() {
+    const root = document.getElementById(this.identifier)?.querySelector(".ncc-active");
+    if (!root) return;
+    root.querySelectorAll("[data-ncc-progress-kind]").forEach((item) => {
+      const kind = item.dataset.nccProgressKind;
+      const index = Number(item.dataset.nccProgressIndex);
+      const completed = kind === "ingredient"
+        ? this.state.progress?.completedIngredients?.includes(index)
+        : this.state.progress?.completedSteps?.includes(index);
+      item.classList.toggle("ncc-completed", completed);
+      const checkbox = item.querySelector("input[type=checkbox]");
+      if (checkbox) {
+        checkbox.checked = completed;
+        checkbox.disabled = false;
+      }
+    });
+  },
+
   getDom() {
     const root = document.createElement("section");
     root.className = `ncc-root ${this.state.active ? "ncc-active" : "ncc-idle"} ncc-theme-${this.state.theme || this.config.theme}`;
@@ -143,9 +169,11 @@ Module.register("MMM-NextcloudCookbook", {
     title.textContent = recipe.name || "Untitled recipe";
     header.appendChild(title);
 
+    const yieldValue = recipe.originalRecipeYield && recipe.originalRecipeYield !== recipe.recipeYield
+      ? `${recipe.recipeYield} (originally ${recipe.originalRecipeYield})`
+      : recipe.recipeYield;
     const metadata = [
-      ["Yield", recipe.recipeYield],
-      ["Original yield", recipe.originalRecipeYield !== recipe.recipeYield ? recipe.originalRecipeYield : null],
+      ["Yield", yieldValue],
       ["Prep", NCCFormatDuration(recipe.prepTime)],
       ["Cook", NCCFormatDuration(recipe.cookTime)],
       ["Total", NCCFormatDuration(recipe.totalTime)]
@@ -178,6 +206,8 @@ Module.register("MMM-NextcloudCookbook", {
     const ingredientList = document.createElement("ul");
     (recipe.recipeIngredient || []).forEach((ingredient, index) => {
       const item = document.createElement("li");
+      item.dataset.nccProgressKind = "ingredient";
+      item.dataset.nccProgressIndex = index;
       const status = recipe.recipeIngredientStatus?.[index];
       if (status === "unquantified") {
         item.classList.add("ncc-quantity-warning");
@@ -215,6 +245,8 @@ Module.register("MMM-NextcloudCookbook", {
     const instructionList = document.createElement("ol");
     this.flattenInstructions(recipe.recipeInstructions || []).forEach((step, index) => {
       const item = document.createElement("li");
+      item.dataset.nccProgressKind = "step";
+      item.dataset.nccProgressIndex = index;
       const completed = progress.completedSteps?.includes(index);
       if (completed) item.classList.add("ncc-completed");
       const label = document.createElement("label");
diff --git a/README.md b/README.md
index f70002f..19c22f7 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,8 @@ link; it should look like `https://cloud.example.test/s/SHARE_TOKEN`.
   config: {
     shareUrl: "https://cloud.example.test/s/SHARE_TOKEN",
     controlUrl: "http://mirror.example.test:8080/MMM-NextcloudCookbook/control",
-    layout: "stacked"
+    layout: "stacked",
+    theme: "light"
   }
 }
 ```
@@ -38,6 +39,9 @@ the controller and recipe overlay also offer a toggle, and the chosen theme is
 saved locally. After exiting recipe mode, use **Resume last recipe** in the
 controller to restore its portions and completion marks.
 
+Ingredients and instructions can be marked complete from either the phone
+controller or a touchscreen on the mirror; both views remain synchronized.
+
 When portions change, the display shows both the selected yield and the
 recipe's original yield. Ingredients without a leading quantity are marked in
 yellow because they cannot be scaled; unsupported or imprecise numeric scaling
diff --git a/control/app.js b/control/app.js
index d493e4c..62b21d3 100644
--- a/control/app.js
+++ b/control/app.js
@@ -106,7 +106,7 @@ function renderActiveRecipe() {
   activeRecipeName.textContent = recipe.name || "Untitled recipe";
   const original = recipe.originalRecipeYield;
   activeRecipeYield.textContent = original && original !== recipe.recipeYield
-    ? `Yield: ${recipe.recipeYield} (original: ${original})`
+    ? `Yield: ${recipe.recipeYield} (originally ${original})`
     : `Yield: ${recipe.recipeYield || "Not specified"}`;
   renderChecklist(activeIngredients, recipe.recipeIngredient || [], progress.completedIngredients, "ingredient",
     recipe.recipeIngredientStatus || []);
@@ -162,7 +162,6 @@ async function updateProgress(kind, index, completed) {
       body: JSON.stringify({ kind, index, completed })
     });
     applyState(state);
-    render();
   } catch (error) {
     status.textContent = error.message;
     render();
diff --git a/control/styles.css b/control/styles.css
index f54987c..6acabd4 100644
--- a/control/styles.css
+++ b/control/styles.css
@@ -122,8 +122,15 @@ button {
 }
 
 .checklist li { padding-left: .2rem; }
-.checklist label { display: flex; gap: .6rem; align-items: flex-start; }
-.checklist input { margin-top: .25rem; min-width: 1.1rem; min-height: 1.1rem; }
+.checklist label { display: flex; gap: .6rem; align-items: flex-start; margin: 0; font-weight: normal; }
+.checklist input {
+  width: 1.2rem;
+  min-width: 1.2rem;
+  height: 1.2rem;
+  min-height: 1.2rem;
+  margin: .18rem 0 0;
+  padding: 0;
+}
 .checklist .completed { color: #777; text-decoration: line-through; }
 .checklist .quantity-warning { color: #876500; }
 .checklist .quantity-error { color: #a2342b; }
@@ -135,3 +142,12 @@ button {
   -webkit-box-orient: vertical;
   -webkit-line-clamp: 2;
 }
+
+@media (max-width: 560px) {
+  main { padding: 18px 14px 44px; }
+  header { align-items: flex-start; flex-direction: column; }
+  .header-actions { width: 100%; justify-content: stretch; }
+  .header-actions button { flex: 1 1 auto; }
+  .active-recipe { margin: 1rem 0; padding: .85rem; }
+  .checklist { gap: .55rem; padding-left: 1.2rem; }
+}