diff --git a/public/locales/ar.json b/public/locales/ar.json
index b178083..2ddfa8c 100644
--- a/public/locales/ar.json
+++ b/public/locales/ar.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "الإشعارات نشطة",
     "notificationDenied": "الإشعارات محظورة",
     "notificationHint": "احصل على إشعارات حتى عندما يكون التطبيق مفتوحًا."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/de.json b/public/locales/de.json
index 72888a0..aba3243 100644
--- a/public/locales/de.json
+++ b/public/locales/de.json
@@ -780,5 +780,16 @@
     "duplicate": "Duplizieren",
     "duplicated": "Rezept dupliziert.",
     "copySuffix": "Kopie"
+  },
+  "onboarding": {
+    "step1Title": "Willkommen bei Oikos",
+    "step1Body": "Dein persönlicher Familienplaner. Aufgaben, Kalender, Einkauf und mehr – alles an einem Ort.",
+    "step2Title": "Alles im Blick",
+    "step2Body": "Über die Navigation unten erreichst du alle Module. Mit dem +-Button erstellst du schnell neue Einträge.",
+    "step3Title": "Bereit loszulegen",
+    "step3Body": "Das Dashboard zeigt dir die wichtigsten Infos auf einen Blick. Du kannst es unter \"Anpassen\" nach deinen Wünschen einrichten.",
+    "next": "Weiter",
+    "done": "Loslegen",
+    "skip": "Überspringen"
   }
 }
diff --git a/public/locales/el.json b/public/locales/el.json
index 8c5924c..f9535b0 100644
--- a/public/locales/el.json
+++ b/public/locales/el.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Ειδοποιήσεις ενεργές",
     "notificationDenied": "Ειδοποιήσεις αποκλεισμένες",
     "notificationHint": "Λάβετε ειδοποιήσεις ακόμα και όταν η εφαρμογή είναι ανοιχτή."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/en.json b/public/locales/en.json
index 569a1ad..cbed02d 100644
--- a/public/locales/en.json
+++ b/public/locales/en.json
@@ -780,5 +780,16 @@
     "open": "Open search",
     "placeholder": "Search…",
     "noResults": "No results found."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/es.json b/public/locales/es.json
index 6db084f..4fdd6da 100644
--- a/public/locales/es.json
+++ b/public/locales/es.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Notificaciones activas",
     "notificationDenied": "Notificaciones bloqueadas",
     "notificationHint": "Recibe notificaciones incluso cuando la aplicación está abierta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/fr.json b/public/locales/fr.json
index 0fc627e..232f203 100644
--- a/public/locales/fr.json
+++ b/public/locales/fr.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Notifications actives",
     "notificationDenied": "Notifications bloquées",
     "notificationHint": "Recevez des notifications même lorsque l'application est ouverte."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/hi.json b/public/locales/hi.json
index 2ab1479..1d7e695 100644
--- a/public/locales/hi.json
+++ b/public/locales/hi.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "सूचनाएं सक्रिय",
     "notificationDenied": "सूचनाएं अवरुद्ध",
     "notificationHint": "ऐप खुली होने पर भी सूचनाएं प्राप्त करें।"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/it.json b/public/locales/it.json
index fe7fa3a..802f018 100644
--- a/public/locales/it.json
+++ b/public/locales/it.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Notifiche attive",
     "notificationDenied": "Notifiche bloccate",
     "notificationHint": "Ricevi notifiche anche quando l'app è aperta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/ja.json b/public/locales/ja.json
index 31a91b1..29d0cbe 100644
--- a/public/locales/ja.json
+++ b/public/locales/ja.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "通知が有効",
     "notificationDenied": "通知がブロックされています",
     "notificationHint": "アプリが開いているときでも通知を受け取ります。"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/pt.json b/public/locales/pt.json
index d2e766e..d8be85c 100644
--- a/public/locales/pt.json
+++ b/public/locales/pt.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Notificações ativas",
     "notificationDenied": "Notificações bloqueadas",
     "notificationHint": "Receba notificações mesmo quando a aplicação está aberta."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/ru.json b/public/locales/ru.json
index 6aabd07..44720cd 100644
--- a/public/locales/ru.json
+++ b/public/locales/ru.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Уведомления активны",
     "notificationDenied": "Уведомления заблокированы",
     "notificationHint": "Получайте уведомления, даже когда приложение открыто."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/sv.json b/public/locales/sv.json
index 0ced812..ff89400 100644
--- a/public/locales/sv.json
+++ b/public/locales/sv.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Notiser aktiva",
     "notificationDenied": "Notiser blockerade",
     "notificationHint": "Få notiser även när appen är öppen."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/tr.json b/public/locales/tr.json
index 8aecf1e..dfdebe8 100644
--- a/public/locales/tr.json
+++ b/public/locales/tr.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "Bildirimler etkin",
     "notificationDenied": "Bildirimler engellendi",
     "notificationHint": "Uygulama açıkken bile bildirim alın."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/uk.json b/public/locales/uk.json
index 3e2efb8..1b20ef2 100644
--- a/public/locales/uk.json
+++ b/public/locales/uk.json
@@ -780,5 +780,16 @@
     "open": "Відкрити пошук",
     "placeholder": "Пошук…",
     "noResults": "Результатів не знайдено."
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/locales/zh.json b/public/locales/zh.json
index 87e8039..22c3361 100644
--- a/public/locales/zh.json
+++ b/public/locales/zh.json
@@ -780,5 +780,16 @@
     "notificationEnabled": "通知已启用",
     "notificationDenied": "通知已被阻止",
     "notificationHint": "即使应用程序打开时也能收到通知。"
+  },
+  "onboarding": {
+    "step1Title": "Welcome to Oikos",
+    "step1Body": "Your personal family planner. Tasks, calendar, shopping and more – all in one place.",
+    "step2Title": "Everything at a glance",
+    "step2Body": "Use the navigation below to reach all modules. The + button creates new entries quickly.",
+    "step3Title": "Ready to go",
+    "step3Body": "The dashboard shows you the most important information at a glance. Customize it under \"Customize\".",
+    "next": "Next",
+    "done": "Get started",
+    "skip": "Skip"
   }
 }
diff --git a/public/pages/dashboard.js b/public/pages/dashboard.js
index 68c42ff..ebaa8dd 100644
--- a/public/pages/dashboard.js
+++ b/public/pages/dashboard.js
@@ -12,6 +12,100 @@ import { openModal, closeModal } from '/components/modal.js';
 // Hält den AbortController des aktuellen FAB-Listeners - wird bei jedem render() erneuert.
 let _fabController = null;
 
+// ── Onboarding ──────────────────────────────────────────────────────────────
+
+const ONBOARDING_KEY = 'oikos-onboarded';
+
+function getOnboardingSteps() {
+  return [
+    { icon: 'home',         title: t('onboarding.step1Title'), body: t('onboarding.step1Body') },
+    { icon: 'grid-2x2',    title: t('onboarding.step2Title'), body: t('onboarding.step2Body') },
+    { icon: 'circle-check', title: t('onboarding.step3Title'), body: t('onboarding.step3Body') },
+  ];
+}
+
+function showOnboarding(appContainer) {
+  const steps = getOnboardingSteps();
+  let current = 0;
+
+  const overlay = document.createElement('div');
+  overlay.className = 'onboarding-overlay';
+  overlay.setAttribute('role', 'dialog');
+  overlay.setAttribute('aria-modal', 'true');
+
+  function renderStep() {
+    const step = steps[current];
+    const isLast = current === steps.length - 1;
+    overlay.replaceChildren();
+
+    const card = document.createElement('div');
+    card.className = 'onboarding-card';
+
+    const icon = document.createElement('i');
+    icon.dataset.lucide = step.icon;
+    icon.className = 'onboarding-icon';
+    icon.setAttribute('aria-hidden', 'true');
+
+    const title = document.createElement('h2');
+    title.className = 'onboarding-title';
+    title.textContent = step.title;
+
+    const body = document.createElement('p');
+    body.className = 'onboarding-body';
+    body.textContent = step.body;
+
+    const dots = document.createElement('div');
+    dots.className = 'onboarding-dots';
+    steps.forEach((_, i) => {
+      const dot = document.createElement('span');
+      dot.className = `onboarding-dot${i === current ? ' onboarding-dot--active' : ''}`;
+      dots.appendChild(dot);
+    });
+
+    const actions = document.createElement('div');
+    actions.className = 'onboarding-actions';
+
+    const skipBtn = document.createElement('button');
+    skipBtn.className = 'btn btn--ghost';
+    skipBtn.textContent = t('onboarding.skip');
+    skipBtn.addEventListener('click', finish);
+
+    const nextBtn = document.createElement('button');
+    nextBtn.className = 'btn btn--primary';
+    nextBtn.textContent = isLast ? t('onboarding.done') : t('onboarding.next');
+    nextBtn.addEventListener('click', () => {
+      if (isLast) { finish(); return; }
+      current++;
+      renderStep();
+      if (window.lucide) window.lucide.createIcons({ el: overlay });
+      nextBtn.focus();
+    });
+
+    actions.appendChild(skipBtn);
+    actions.appendChild(nextBtn);
+    card.appendChild(icon);
+    card.appendChild(title);
+    card.appendChild(body);
+    card.appendChild(dots);
+    card.appendChild(actions);
+    overlay.appendChild(card);
+
+    if (window.lucide) window.lucide.createIcons({ el: overlay });
+    setTimeout(() => nextBtn.focus(), 50);
+  }
+
+  function finish() {
+    localStorage.setItem(ONBOARDING_KEY, '1');
+    overlay.classList.add('onboarding-overlay--out');
+    overlay.addEventListener('animationend', () => overlay.remove(), { once: true });
+    // Fallback falls animationend nicht feuert (prefers-reduced-motion):
+    setTimeout(() => overlay.remove(), 300);
+  }
+
+  renderStep();
+  appContainer.appendChild(overlay);
+}
+
 // --------------------------------------------------------
 // Widget-Definitionen (Reihenfolge = Standard-Layout)
 // --------------------------------------------------------
@@ -823,6 +917,10 @@ export async function render(container, { user }) {
     const timerId = setInterval(doAutoRefresh, 30 * 60 * 1000);
     _fabController.signal.addEventListener('abort', () => clearInterval(timerId));
   }
+
+  if (!localStorage.getItem(ONBOARDING_KEY)) {
+    setTimeout(() => showOnboarding(container), 400);
+  }
 }
 
 function wireWeatherRefresh(container) {
diff --git a/public/styles/dashboard.css b/public/styles/dashboard.css
index b6edb8e..086164f 100644
--- a/public/styles/dashboard.css
+++ b/public/styles/dashboard.css
@@ -1220,3 +1220,98 @@
   opacity: 0.3;
   cursor: not-allowed;
 }
+
+/* ── Onboarding Overlay ── */
+.onboarding-overlay {
+  position: fixed;
+  inset: 0;
+  z-index: var(--z-modal);
+  background: color-mix(in srgb, var(--color-bg) 70%, transparent);
+  backdrop-filter: var(--blur-lg);
+  -webkit-backdrop-filter: var(--blur-lg);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: var(--space-6);
+  animation: onboarding-in 0.3s var(--ease-out);
+}
+
+.onboarding-overlay--out {
+  animation: onboarding-out 0.25s ease forwards;
+}
+
+@keyframes onboarding-in {
+  from { opacity: 0; }
+  to   { opacity: 1; }
+}
+
+@keyframes onboarding-out {
+  from { opacity: 1; }
+  to   { opacity: 0; }
+}
+
+.onboarding-card {
+  background: var(--color-surface);
+  border: 1px solid var(--color-border-subtle);
+  border-radius: var(--radius-xl);
+  padding: var(--space-8);
+  max-width: 360px;
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: var(--space-4);
+  text-align: center;
+  box-shadow: var(--shadow-lg);
+}
+
+.onboarding-icon {
+  width: 48px;
+  height: 48px;
+  color: var(--color-accent);
+}
+
+.onboarding-title {
+  font-size: var(--text-xl);
+  font-weight: var(--font-weight-semibold);
+  color: var(--color-text);
+  margin: 0;
+}
+
+.onboarding-body {
+  font-size: var(--text-base);
+  color: var(--color-text-secondary);
+  line-height: 1.6;
+  margin: 0;
+}
+
+.onboarding-dots {
+  display: flex;
+  gap: var(--space-2);
+}
+
+.onboarding-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: var(--color-border);
+  transition: background 0.2s;
+}
+
+.onboarding-dot--active {
+  background: var(--color-accent);
+}
+
+.onboarding-actions {
+  display: flex;
+  gap: var(--space-3);
+  width: 100%;
+  justify-content: flex-end;
+  margin-top: var(--space-2);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .onboarding-overlay,
+  .onboarding-overlay--out { animation: none; }
+  .onboarding-dot { transition: none; }
+}