diff --git a/public/admin/config.yml b/public/admin/config.yml
index 14e386a..bee4106 100644
--- a/public/admin/config.yml
+++ b/public/admin/config.yml
@@ -284,6 +284,36 @@ collections:
               - { label: "ODER: Rabatt als fester Betrag (€)", name: betrag, widget: number, value_type: float, step: 0.01, required: false }
               - { label: "Gültig bis (leer = unbegrenzt)", name: bis, widget: datetime, format: "YYYY-MM-DD", date_format: "YYYY-MM-DD", time_format: false, required: false }
 
+  - name: partnercodes
+    label: "🤝 Partner-Rabattcodes"
+    icon: handshake
+    files:
+      - name: codes
+        label: "Partner-Rabattcodes"
+        file: src/content/partnercodes.json
+        description: >
+          Eigene Rabattcodes für Kooperationen mit Streamer:innen, Content-Creator:innen o.ä.:
+          du handelst mit der Person einen Rabatt aus, den ihre Follower:innen mit diesem Code
+          beim Einkauf bekommen. Fachlich wie ein Gutscheincode, aber bewusst getrennt von den
+          allgemeinen Gutscheinen gelistet, damit du hier den Überblick behältst, welcher Code zu
+          welcher Partnerin/welchem Partner gehört. WICHTIG: Diese Seite kann noch nicht
+          automatisch mitzählen, wie oft ein Code eingelöst wurde (das bräuchte eine eigene
+          Datenbank, kommt evtl. in einer späteren Ausbaustufe) — nutze das Notizfeld unten, um
+          dir die vereinbarte Provision/Konditionen selbst zu merken.
+        fields:
+          - label: Partner-Rabattcodes
+            name: codes
+            widget: list
+            summary: "{{fields.code}} — {{fields.partner}}"
+            fields:
+              - { label: "Name der Partnerin/des Partners (z.B. Streamer-Name)", name: partner, widget: string, hint: "Nur für deine eigene Übersicht — wird Kund:innen nirgends angezeigt." }
+              - { label: "Code (z.B. MAXPLAYS15)", name: code, widget: string, hint: "Groß-/Kleinschreibung ist egal — wird automatisch angepasst." }
+              - { label: "Rabatt in Prozent (z.B. 15 für 15%)", name: prozent, widget: number, value_type: int, required: false }
+              - { label: "ODER: Rabatt als fester Betrag (€)", name: betrag, widget: number, value_type: float, step: 0.01, required: false }
+              - { label: "Gültig bis (leer = unbegrenzt)", name: bis, widget: datetime, format: "YYYY-MM-DD", date_format: "YYYY-MM-DD", time_format: false, required: false }
+              - { label: "Aktiv", name: aktiv, widget: boolean, default: true, hint: "Ausschalten, um den Code vorübergehend zu sperren, ohne ihn (und die Historie) zu löschen." }
+              - { label: "Notiz zu den Konditionen (z.B. vereinbarte Provision)", name: notiz, widget: text, required: false, hint: "Rein intern für dich — wirkt sich nicht auf die Website aus." }
+
   - name: bankverbindung
     label: "🏦 Bankverbindung"
     icon: account_balance
diff --git a/src/content/partnercodes.json b/src/content/partnercodes.json
new file mode 100644
index 0000000..dec17ab
--- /dev/null
+++ b/src/content/partnercodes.json
@@ -0,0 +1,3 @@
+{
+  "codes": []
+}
diff --git a/src/data/partnercodes.ts b/src/data/partnercodes.ts
new file mode 100644
index 0000000..ffbde48
--- /dev/null
+++ b/src/data/partnercodes.ts
@@ -0,0 +1,56 @@
+// Partner-/Influencer-Rabattcodes — eigene Codes, die VanVan z.B. mit Streamer:innen oder
+// Content-Creator:innen aushandelt: Kund:innen bekommen damit Rabatt beim Einkauf, während VanVan
+// im Adminbereich für jeden Code hinterlegt, zu welcher Partnerin/welchem Partner er gehört (für
+// die eigene Übersicht, z.B. welche vereinbarte Provision dahintersteckt).
+//
+// Fachlich fast identisch zu einem normalen Gutschein (Rabatt auf den Warenwert), aber bewusst als
+// eigene, separate Liste geführt — allgemeine Rabattaktionen (Gutscheine) und individuell mit
+// einzelnen Partner:innen ausgehandelte Codes sollen im Admin nicht durcheinandergeraten.
+//
+// WICHTIG (Grenze von Phase 1 — reine statische Seite ohne eigenes Backend): Diese Codes können
+// einen Rabatt gewähren, aber es gibt (noch) keine automatische Zähl-/Provisions-Auswertung, WER
+// wie oft welchen Code eingelöst hat — das bräuchte einen echten Server (Phase 2, siehe
+// Tech-Stack-Entscheidung im Projekt-Vault). Bis dahin: das `notiz`-Feld im Admin dient VanVan als
+// Gedächtnisstütze für die vereinbarten Konditionen.
+
+// @ts-ignore -- JSON-Import, zur Build-Zeit von Astro/Vite aufgelöst
+import partnercodesRaw from "../content/partnercodes.json";
+
+export interface Partnercode {
+  code: string;
+  /** Name der Partnerin/des Partners (Streamer:in, Creator:in, ...) — nur für VanVans eigene
+   *  Übersicht im Admin, wird Kund:innen nirgends angezeigt. */
+  partner: string;
+  prozent?: number;
+  betrag?: number;
+  bis?: string; // ISO-Datum, optional
+  /** Auf false setzen, um einen Code zu pausieren, ohne ihn (und die Partner-Historie) zu löschen. */
+  aktiv?: boolean;
+}
+
+const partnercodes = (partnercodesRaw as { codes: Partnercode[] }).codes ?? [];
+
+function istGueltig(bis?: string): boolean {
+  if (!bis) return true;
+  return new Date() <= new Date(`${bis}T23:59:59`);
+}
+
+/** Sucht einen Partnercode anhand des eingegebenen Codes (Groß-/Kleinschreibung egal). Pausierte
+ *  (aktiv: false) oder abgelaufene Codes gelten als nicht gefunden. */
+export function findePartnercode(code: string): Partnercode | undefined {
+  const normalisiert = code.trim().toUpperCase();
+  return partnercodes.find(
+    (c) => c.code.toUpperCase() === normalisiert && c.aktiv !== false && istGueltig(c.bis)
+  );
+}
+
+/** Berechnet den Rabatt-Betrag in Euro für einen gegebenen Warenwert. */
+export function partnercodeRabatt(code: Partnercode, warenwert: number): number {
+  if (typeof code.prozent === "number" && code.prozent > 0) {
+    return Math.min(warenwert, warenwert * (code.prozent / 100));
+  }
+  if (typeof code.betrag === "number" && code.betrag > 0) {
+    return Math.min(warenwert, code.betrag);
+  }
+  return 0;
+}
diff --git a/src/i18n/ui.ts b/src/i18n/ui.ts
index 1b809aa..4e80f5d 100644
--- a/src/i18n/ui.ts
+++ b/src/i18n/ui.ts
@@ -155,6 +155,9 @@ export const ui = {
       couponLabel: "🎟️ Gutscheincode", couponPlaceholder: "Code eingeben", couponApply: "Einlösen", couponRemove: "Entfernen",
       buyNow: "Jetzt kaufen", keptInCart: "Bleibt im Warenkorb, wird noch nicht gekauft",
       couponInvalid: "Code ungültig oder abgelaufen.", couponApplied: (code: string) => `Gutschein „${code}" eingelöst`,
+      partnerDiscount: "🤝 Partner-Rabatt",
+      partnerCodeLabel: "🤝 Partner-Rabattcode", partnerCodePlaceholder: "Code eingeben", partnerCodeApply: "Einlösen", partnerCodeRemove: "Entfernen",
+      partnerCodeInvalid: "Code ungültig oder abgelaufen.", partnerCodeApplied: (code: string) => `Partner-Code „${code}" eingelöst`,
     },
     checkout: {
       eyebrow: "Checkout", title: "Bestellung abschließen",
@@ -338,6 +341,9 @@ export const ui = {
       couponLabel: "🎟️ Coupon code", couponPlaceholder: "Enter code", couponApply: "Apply", couponRemove: "Remove",
       buyNow: "Buy now", keptInCart: "Stays in cart, not purchased yet",
       couponInvalid: "Code invalid or expired.", couponApplied: (code: string) => `Coupon "${code}" applied`,
+      partnerDiscount: "🤝 Partner discount",
+      partnerCodeLabel: "🤝 Partner discount code", partnerCodePlaceholder: "Enter code", partnerCodeApply: "Apply", partnerCodeRemove: "Remove",
+      partnerCodeInvalid: "Code invalid or expired.", partnerCodeApplied: (code: string) => `Partner code "${code}" applied`,
     },
     checkout: {
       eyebrow: "Checkout", title: "Complete your order",
@@ -521,6 +527,9 @@ export const ui = {
       couponLabel: "🎟️ Gutschy-Code", couponPlaceholder: "Code igäh", couponApply: "Ilöse", couponRemove: "Ewägmache",
       buyNow: "Jetzt chaufe", keptInCart: "Blibt im Warenchorb, wird no nid chauft",
       couponInvalid: "Code ungültig oder abgloffe.", couponApplied: (code: string) => `Gutschy „${code}" iglöst`,
+      partnerDiscount: "🤝 Partner-Rabatt",
+      partnerCodeLabel: "🤝 Partner-Rabattcode", partnerCodePlaceholder: "Code igäh", partnerCodeApply: "Ilöse", partnerCodeRemove: "Ewägmache",
+      partnerCodeInvalid: "Code ungültig oder abgloffe.", partnerCodeApplied: (code: string) => `Partner-Code „${code}" iglöst`,
     },
     checkout: {
       eyebrow: "Checkout", title: "Bschtellig abschliesse",
@@ -704,6 +713,9 @@ export const ui = {
       couponLabel: "🎟️ Code promo", couponPlaceholder: "Entrer le code", couponApply: "Valider", couponRemove: "Retirer",
       buyNow: "Acheter maintenant", keptInCart: "Reste dans le panier, pas encore acheté",
       couponInvalid: "Code invalide ou expiré.", couponApplied: (code: string) => `Code promo « ${code} » appliqué`,
+      partnerDiscount: "🤝 Remise partenaire",
+      partnerCodeLabel: "🤝 Code partenaire", partnerCodePlaceholder: "Entrer le code", partnerCodeApply: "Valider", partnerCodeRemove: "Retirer",
+      partnerCodeInvalid: "Code invalide ou expiré.", partnerCodeApplied: (code: string) => `Code partenaire « ${code} » appliqué`,
     },
     checkout: {
       eyebrow: "Paiement", title: "Finaliser la commande",
diff --git a/src/pages/ch/checkout/index.astro b/src/pages/ch/checkout/index.astro
index 84cbd48..5aec746 100644
--- a/src/pages/ch/checkout/index.astro
+++ b/src/pages/ch/checkout/index.astro
@@ -134,6 +134,15 @@ const t = useTranslations(lang);
           <p class="small" id="coupon-status"></p>
         </div>
         <hr class="divider stitched" />
+        <div class="coupon-row">
+          <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+          <div class="coupon-input-group">
+            <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+            <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+          </div>
+          <p class="small" id="partner-code-status"></p>
+        </div>
+        <hr class="divider stitched" />
         <h3>🚚 {t.checkout.shippingHintTitle}</h3>
         <p class="small">{t.checkout.shippingHint}</p>
         <a class="small" href="/ch/versand-zahlung/">{t.checkout.shippingLink}</a>
@@ -142,19 +151,19 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/ch/checkout/danke/", checkoutLang: lang }}>
+<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/ch/checkout/danke/", checkoutLang: lang, discountLabel: t.cart.discount, couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, klarnaConnectLabel: t.checkout.klarnaConnect, klarnaConnectingLabel: t.checkout.klarnaConnecting, klarnaConnectedLabel: t.checkout.klarnaConnected, bankHolderLabel: t.checkout.bankHolder, bankIbanLabel: t.checkout.bankIban, bankBicLabel: t.checkout.bankBic, bankBankNameLabel: t.checkout.bankBankName, bankPlaceholderLabel: t.checkout.bankPlaceholder, partnerDiscountLabel: t.cart.partnerDiscount, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel };
+  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis } from "../../../data/rabatt";
 import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankverbindung";
 
-  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel } = window.__checkoutVars;
+  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__checkoutVars;
 
   const summary = document.getElementById("checkout-summary");
   const landSelect = document.getElementById("land");
@@ -169,7 +178,9 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     const shipping = cart.length === 0 ? 0 : berechneVersandkosten(land, cart.map((i) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     currentTotal = total;
 
     summary.innerHTML = `
@@ -179,6 +190,7 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
         return `<div class="row"><span>${i.menge}× ${i.name}</span><span>${formatPrice(zeilenpreis, checkoutLang)}</span></div>`;
       }).join("")}
       ${coupon && discount > 0 ? `<div class="row"><span>${discountLabel}</span><span>-${formatPrice(discount, checkoutLang)}</span></div>` : ""}
+      ${partnerCode && partnerDiscount > 0 ? `<div class="row"><span>${partnerDiscountLabel}</span><span>-${formatPrice(partnerDiscount, checkoutLang)}</span></div>` : ""}
       <div class="row"><span>${shippingLabel}</span><span>${shipping === 0 ? freeLabel : formatPrice(shipping, checkoutLang)}</span></div>
       <div class="row total"><span>${totalLabel}</span><span>${formatPrice(total, checkoutLang)}</span></div>
     `;
@@ -193,6 +205,17 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     } else {
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
+
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); renderSummary(); });
+    } else {
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
   }
 
   renderSummary();
@@ -274,6 +297,15 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     renderSummary();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); renderSummary(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    renderSummary();
+  });
+
   document.getElementById("checkout-form").addEventListener("submit", (e) => {
     e.preventDefault();
     if (cart.length === 0) {
diff --git a/src/pages/ch/warenkorb/index.astro b/src/pages/ch/warenkorb/index.astro
index f44ed0f..76f7192 100644
--- a/src/pages/ch/warenkorb/index.astro
+++ b/src/pages/ch/warenkorb/index.astro
@@ -28,6 +28,7 @@ const t = useTranslations(lang);
           <div id="summary-items" class="checkout-summary"></div>
           <div class="summary-row"><span>{t.cart.subtotal}</span><span id="sum-subtotal">0,00 €</span></div>
           <div class="summary-row discount-row" id="discount-row" style="display:none;"><span>{t.cart.discount}</span><span id="sum-discount">-0,00 €</span></div>
+          <div class="summary-row discount-row" id="partner-discount-row" style="display:none;"><span>{t.cart.partnerDiscount}</span><span id="sum-partner-discount">-0,00 €</span></div>
           <div class="coupon-row">
             <label for="coupon-input">{t.cart.couponLabel}</label>
             <div class="coupon-input-group">
@@ -36,6 +37,14 @@ const t = useTranslations(lang);
             </div>
             <p class="small" id="coupon-status"></p>
           </div>
+          <div class="coupon-row">
+            <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+            <div class="coupon-input-group">
+              <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+              <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+            </div>
+            <p class="small" id="partner-code-status"></p>
+          </div>
           <div class="ship-country-row">
             <label for="cart-land">📦 {t.checkout.country}</label>
             <select id="cart-land">
@@ -57,18 +66,18 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart }}>
+<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel };
+  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { getProduct, products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt";
 
-  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel } = window.__cartVars;
+  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__cartVars;
   const landSelect = document.getElementById("cart-land");
 
   function render() {
@@ -136,7 +145,9 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     const shipping = berechneVersandkosten(landSelect.value, ausgewaehlteZeilen.map(({ item: i }) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     document.getElementById("sum-subtotal").textContent = formatPrice(subtotal, cartLang);
     document.getElementById("sum-shipping").textContent = shipping === 0 ? freeLabel : formatPrice(shipping, cartLang);
     document.getElementById("sum-total").textContent = formatPrice(total, cartLang);
@@ -158,6 +169,21 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
 
+    const partnerDiscountRow = document.getElementById("partner-discount-row");
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerDiscountRow.style.display = "flex";
+      document.getElementById("sum-partner-discount").textContent = "-" + formatPrice(partnerDiscount, cartLang);
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); render(); });
+    } else {
+      partnerDiscountRow.style.display = "none";
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
+
     itemsEl.querySelectorAll("button, a.remove").forEach((el) => {
       el.addEventListener("click", (e) => {
         e.preventDefault();
@@ -195,6 +221,15 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     render();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); render(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    render();
+  });
+
   render();
   window.addEventListener("cart:changed", render);
   landSelect.addEventListener("change", render);
diff --git a/src/pages/checkout/index.astro b/src/pages/checkout/index.astro
index 3656bac..c9c98a9 100644
--- a/src/pages/checkout/index.astro
+++ b/src/pages/checkout/index.astro
@@ -134,6 +134,15 @@ const t = useTranslations(lang);
           <p class="small" id="coupon-status"></p>
         </div>
         <hr class="divider stitched" />
+        <div class="coupon-row">
+          <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+          <div class="coupon-input-group">
+            <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+            <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+          </div>
+          <p class="small" id="partner-code-status"></p>
+        </div>
+        <hr class="divider stitched" />
         <h3>🚚 {t.checkout.shippingHintTitle}</h3>
         <p class="small">{t.checkout.shippingHint}</p>
         <a class="small" href="/versand-zahlung/">{t.checkout.shippingLink}</a>
@@ -142,22 +151,22 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/checkout/danke/", checkoutLang: lang, discountLabel: t.cart.discount, couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, klarnaConnectLabel: t.checkout.klarnaConnect, klarnaConnectingLabel: t.checkout.klarnaConnecting, klarnaConnectedLabel: t.checkout.klarnaConnected, bankHolderLabel: t.checkout.bankHolder, bankIbanLabel: t.checkout.bankIban, bankBicLabel: t.checkout.bankBic, bankBankNameLabel: t.checkout.bankBankName, bankPlaceholderLabel: t.checkout.bankPlaceholder }}>
+<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/checkout/danke/", checkoutLang: lang, discountLabel: t.cart.discount, couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, klarnaConnectLabel: t.checkout.klarnaConnect, klarnaConnectingLabel: t.checkout.klarnaConnecting, klarnaConnectedLabel: t.checkout.klarnaConnected, bankHolderLabel: t.checkout.bankHolder, bankIbanLabel: t.checkout.bankIban, bankBicLabel: t.checkout.bankBic, bankBankNameLabel: t.checkout.bankBankName, bankPlaceholderLabel: t.checkout.bankPlaceholder, partnerDiscountLabel: t.cart.partnerDiscount, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte werden von Astro in ein IIFE gepackt (kein ES-Modul) — echte
   // `import`-Anweisungen würden hier zur Laufzeit mit "Cannot use import statement outside a
   // module" fehlschlagen. Deshalb hier nur die vom Server gerenderten Werte auf window ablegen,
   // die eigentliche Logik läuft im separaten <script type="module"> darunter.
-  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel };
+  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt } from "../../scripts/cart";
+  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt } from "../../scripts/cart";
   import { formatPrice } from "../../i18n/format";
   import { products } from "../../data/products";
   import { berechneVersandkosten } from "../../data/versand";
 import { effektiverZeilenpreis } from "../../data/rabatt";
 import { bankverbindung, bankverbindungVollstaendig } from "../../data/bankverbindung";
 
-  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel } = window.__checkoutVars;
+  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__checkoutVars;
 
   const summary = document.getElementById("checkout-summary");
   const landSelect = document.getElementById("land");
@@ -172,7 +181,9 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../data/bankverbi
     const shipping = cart.length === 0 ? 0 : berechneVersandkosten(land, cart.map((i) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     currentTotal = total;
 
     summary.innerHTML = `
@@ -182,6 +193,7 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../data/bankverbi
         return `<div class="row"><span>${i.menge}× ${i.name}</span><span>${formatPrice(zeilenpreis, checkoutLang)}</span></div>`;
       }).join("")}
       ${coupon && discount > 0 ? `<div class="row"><span>${discountLabel}</span><span>-${formatPrice(discount, checkoutLang)}</span></div>` : ""}
+      ${partnerCode && partnerDiscount > 0 ? `<div class="row"><span>${partnerDiscountLabel}</span><span>-${formatPrice(partnerDiscount, checkoutLang)}</span></div>` : ""}
       <div class="row"><span>${shippingLabel}</span><span>${shipping === 0 ? freeLabel : formatPrice(shipping, checkoutLang)}</span></div>
       <div class="row total"><span>${totalLabel}</span><span>${formatPrice(total, checkoutLang)}</span></div>
     `;
@@ -196,6 +208,17 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../data/bankverbi
     } else {
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
+
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); renderSummary(); });
+    } else {
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
   }
 
   renderSummary();
@@ -277,6 +300,15 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../data/bankverbi
     renderSummary();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); renderSummary(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    renderSummary();
+  });
+
   document.getElementById("checkout-form").addEventListener("submit", (e) => {
     e.preventDefault();
     if (cart.length === 0) {
diff --git a/src/pages/en/checkout/index.astro b/src/pages/en/checkout/index.astro
index b98bdc1..73e0cb8 100644
--- a/src/pages/en/checkout/index.astro
+++ b/src/pages/en/checkout/index.astro
@@ -134,6 +134,15 @@ const t = useTranslations(lang);
           <p class="small" id="coupon-status"></p>
         </div>
         <hr class="divider stitched" />
+        <div class="coupon-row">
+          <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+          <div class="coupon-input-group">
+            <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+            <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+          </div>
+          <p class="small" id="partner-code-status"></p>
+        </div>
+        <hr class="divider stitched" />
         <h3>🚚 {t.checkout.shippingHintTitle}</h3>
         <p class="small">{t.checkout.shippingHint}</p>
         <a class="small" href="/en/versand-zahlung/">{t.checkout.shippingLink}</a>
@@ -142,19 +151,19 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/en/checkout/danke/", checkoutLang: lang }}>
+<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/en/checkout/danke/", checkoutLang: lang, discountLabel: t.cart.discount, couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, klarnaConnectLabel: t.checkout.klarnaConnect, klarnaConnectingLabel: t.checkout.klarnaConnecting, klarnaConnectedLabel: t.checkout.klarnaConnected, bankHolderLabel: t.checkout.bankHolder, bankIbanLabel: t.checkout.bankIban, bankBicLabel: t.checkout.bankBic, bankBankNameLabel: t.checkout.bankBankName, bankPlaceholderLabel: t.checkout.bankPlaceholder, partnerDiscountLabel: t.cart.partnerDiscount, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel };
+  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis } from "../../../data/rabatt";
 import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankverbindung";
 
-  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel } = window.__checkoutVars;
+  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__checkoutVars;
 
   const summary = document.getElementById("checkout-summary");
   const landSelect = document.getElementById("land");
@@ -169,7 +178,9 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     const shipping = cart.length === 0 ? 0 : berechneVersandkosten(land, cart.map((i) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     currentTotal = total;
 
     summary.innerHTML = `
@@ -179,6 +190,7 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
         return `<div class="row"><span>${i.menge}× ${i.name}</span><span>${formatPrice(zeilenpreis, checkoutLang)}</span></div>`;
       }).join("")}
       ${coupon && discount > 0 ? `<div class="row"><span>${discountLabel}</span><span>-${formatPrice(discount, checkoutLang)}</span></div>` : ""}
+      ${partnerCode && partnerDiscount > 0 ? `<div class="row"><span>${partnerDiscountLabel}</span><span>-${formatPrice(partnerDiscount, checkoutLang)}</span></div>` : ""}
       <div class="row"><span>${shippingLabel}</span><span>${shipping === 0 ? freeLabel : formatPrice(shipping, checkoutLang)}</span></div>
       <div class="row total"><span>${totalLabel}</span><span>${formatPrice(total, checkoutLang)}</span></div>
     `;
@@ -193,6 +205,17 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     } else {
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
+
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); renderSummary(); });
+    } else {
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
   }
 
   renderSummary();
@@ -274,6 +297,15 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     renderSummary();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); renderSummary(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    renderSummary();
+  });
+
   document.getElementById("checkout-form").addEventListener("submit", (e) => {
     e.preventDefault();
     if (cart.length === 0) {
diff --git a/src/pages/en/warenkorb/index.astro b/src/pages/en/warenkorb/index.astro
index 73240ba..8c9d4e9 100644
--- a/src/pages/en/warenkorb/index.astro
+++ b/src/pages/en/warenkorb/index.astro
@@ -28,6 +28,7 @@ const t = useTranslations(lang);
           <div id="summary-items" class="checkout-summary"></div>
           <div class="summary-row"><span>{t.cart.subtotal}</span><span id="sum-subtotal">0,00 €</span></div>
           <div class="summary-row discount-row" id="discount-row" style="display:none;"><span>{t.cart.discount}</span><span id="sum-discount">-0,00 €</span></div>
+          <div class="summary-row discount-row" id="partner-discount-row" style="display:none;"><span>{t.cart.partnerDiscount}</span><span id="sum-partner-discount">-0,00 €</span></div>
           <div class="coupon-row">
             <label for="coupon-input">{t.cart.couponLabel}</label>
             <div class="coupon-input-group">
@@ -36,6 +37,14 @@ const t = useTranslations(lang);
             </div>
             <p class="small" id="coupon-status"></p>
           </div>
+          <div class="coupon-row">
+            <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+            <div class="coupon-input-group">
+              <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+              <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+            </div>
+            <p class="small" id="partner-code-status"></p>
+          </div>
           <div class="ship-country-row">
             <label for="cart-land">📦 {t.checkout.country}</label>
             <select id="cart-land">
@@ -57,18 +66,18 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart }}>
+<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel };
+  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { getProduct, products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt";
 
-  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel } = window.__cartVars;
+  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__cartVars;
   const landSelect = document.getElementById("cart-land");
 
   function render() {
@@ -136,7 +145,9 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     const shipping = berechneVersandkosten(landSelect.value, ausgewaehlteZeilen.map(({ item: i }) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     document.getElementById("sum-subtotal").textContent = formatPrice(subtotal, cartLang);
     document.getElementById("sum-shipping").textContent = shipping === 0 ? freeLabel : formatPrice(shipping, cartLang);
     document.getElementById("sum-total").textContent = formatPrice(total, cartLang);
@@ -158,6 +169,21 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
 
+    const partnerDiscountRow = document.getElementById("partner-discount-row");
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerDiscountRow.style.display = "flex";
+      document.getElementById("sum-partner-discount").textContent = "-" + formatPrice(partnerDiscount, cartLang);
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); render(); });
+    } else {
+      partnerDiscountRow.style.display = "none";
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
+
     itemsEl.querySelectorAll("button, a.remove").forEach((el) => {
       el.addEventListener("click", (e) => {
         e.preventDefault();
@@ -195,6 +221,15 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     render();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); render(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    render();
+  });
+
   render();
   window.addEventListener("cart:changed", render);
   landSelect.addEventListener("change", render);
diff --git a/src/pages/fr/checkout/index.astro b/src/pages/fr/checkout/index.astro
index 5d2c1b9..e296bcf 100644
--- a/src/pages/fr/checkout/index.astro
+++ b/src/pages/fr/checkout/index.astro
@@ -134,6 +134,15 @@ const t = useTranslations(lang);
           <p class="small" id="coupon-status"></p>
         </div>
         <hr class="divider stitched" />
+        <div class="coupon-row">
+          <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+          <div class="coupon-input-group">
+            <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+            <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+          </div>
+          <p class="small" id="partner-code-status"></p>
+        </div>
+        <hr class="divider stitched" />
         <h3>🚚 {t.checkout.shippingHintTitle}</h3>
         <p class="small">{t.checkout.shippingHint}</p>
         <a class="small" href="/fr/versand-zahlung/">{t.checkout.shippingLink}</a>
@@ -142,19 +151,19 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/fr/checkout/danke/", checkoutLang: lang }}>
+<script define:vars={{ freeLabel: t.checkout.free, totalLabel: t.checkout.total, shippingLabel: t.cart.shipping, emptyCartAlert: t.checkout.emptyCartAlert, thankYouPath: "/fr/checkout/danke/", checkoutLang: lang, discountLabel: t.cart.discount, couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, klarnaConnectLabel: t.checkout.klarnaConnect, klarnaConnectingLabel: t.checkout.klarnaConnecting, klarnaConnectedLabel: t.checkout.klarnaConnected, bankHolderLabel: t.checkout.bankHolder, bankIbanLabel: t.checkout.bankIban, bankBicLabel: t.checkout.bankBic, bankBankNameLabel: t.checkout.bankBankName, bankPlaceholderLabel: t.checkout.bankPlaceholder, partnerDiscountLabel: t.cart.partnerDiscount, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel };
+  window.__checkoutVars = { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis } from "../../../data/rabatt";
 import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankverbindung";
 
-  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel } = window.__checkoutVars;
+  const { freeLabel, totalLabel, shippingLabel, emptyCartAlert, thankYouPath, checkoutLang, discountLabel, couponInvalid, couponAppliedTemplate, couponRemoveLabel, klarnaConnectLabel, klarnaConnectingLabel, klarnaConnectedLabel, bankHolderLabel, bankIbanLabel, bankBicLabel, bankBankNameLabel, bankPlaceholderLabel, partnerDiscountLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__checkoutVars;
 
   const summary = document.getElementById("checkout-summary");
   const landSelect = document.getElementById("land");
@@ -169,7 +178,9 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     const shipping = cart.length === 0 ? 0 : berechneVersandkosten(land, cart.map((i) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     currentTotal = total;
 
     summary.innerHTML = `
@@ -179,6 +190,7 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
         return `<div class="row"><span>${i.menge}× ${i.name}</span><span>${formatPrice(zeilenpreis, checkoutLang)}</span></div>`;
       }).join("")}
       ${coupon && discount > 0 ? `<div class="row"><span>${discountLabel}</span><span>-${formatPrice(discount, checkoutLang)}</span></div>` : ""}
+      ${partnerCode && partnerDiscount > 0 ? `<div class="row"><span>${partnerDiscountLabel}</span><span>-${formatPrice(partnerDiscount, checkoutLang)}</span></div>` : ""}
       <div class="row"><span>${shippingLabel}</span><span>${shipping === 0 ? freeLabel : formatPrice(shipping, checkoutLang)}</span></div>
       <div class="row total"><span>${totalLabel}</span><span>${formatPrice(total, checkoutLang)}</span></div>
     `;
@@ -193,6 +205,17 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     } else {
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
+
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); renderSummary(); });
+    } else {
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
   }
 
   renderSummary();
@@ -274,6 +297,15 @@ import { bankverbindung, bankverbindungVollstaendig } from "../../../data/bankve
     renderSummary();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); renderSummary(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    renderSummary();
+  });
+
   document.getElementById("checkout-form").addEventListener("submit", (e) => {
     e.preventDefault();
     if (cart.length === 0) {
diff --git a/src/pages/fr/warenkorb/index.astro b/src/pages/fr/warenkorb/index.astro
index 6fb41b5..fc2159a 100644
--- a/src/pages/fr/warenkorb/index.astro
+++ b/src/pages/fr/warenkorb/index.astro
@@ -28,6 +28,7 @@ const t = useTranslations(lang);
           <div id="summary-items" class="checkout-summary"></div>
           <div class="summary-row"><span>{t.cart.subtotal}</span><span id="sum-subtotal">0,00 €</span></div>
           <div class="summary-row discount-row" id="discount-row" style="display:none;"><span>{t.cart.discount}</span><span id="sum-discount">-0,00 €</span></div>
+          <div class="summary-row discount-row" id="partner-discount-row" style="display:none;"><span>{t.cart.partnerDiscount}</span><span id="sum-partner-discount">-0,00 €</span></div>
           <div class="coupon-row">
             <label for="coupon-input">{t.cart.couponLabel}</label>
             <div class="coupon-input-group">
@@ -36,6 +37,14 @@ const t = useTranslations(lang);
             </div>
             <p class="small" id="coupon-status"></p>
           </div>
+          <div class="coupon-row">
+            <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+            <div class="coupon-input-group">
+              <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+              <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+            </div>
+            <p class="small" id="partner-code-status"></p>
+          </div>
           <div class="ship-country-row">
             <label for="cart-land">📦 {t.checkout.country}</label>
             <select id="cart-land">
@@ -57,18 +66,18 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart }}>
+<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel };
+  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
+  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt, setAusgewaehlt } from "../../../scripts/cart";
   import { formatPrice } from "../../../i18n/format";
   import { getProduct, products } from "../../../data/products";
   import { berechneVersandkosten } from "../../../data/versand";
 import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt";
 
-  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel } = window.__cartVars;
+  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__cartVars;
   const landSelect = document.getElementById("cart-land");
 
   function render() {
@@ -136,7 +145,9 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     const shipping = berechneVersandkosten(landSelect.value, ausgewaehlteZeilen.map(({ item: i }) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     document.getElementById("sum-subtotal").textContent = formatPrice(subtotal, cartLang);
     document.getElementById("sum-shipping").textContent = shipping === 0 ? freeLabel : formatPrice(shipping, cartLang);
     document.getElementById("sum-total").textContent = formatPrice(total, cartLang);
@@ -158,6 +169,21 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
 
+    const partnerDiscountRow = document.getElementById("partner-discount-row");
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerDiscountRow.style.display = "flex";
+      document.getElementById("sum-partner-discount").textContent = "-" + formatPrice(partnerDiscount, cartLang);
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); render(); });
+    } else {
+      partnerDiscountRow.style.display = "none";
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
+
     itemsEl.querySelectorAll("button, a.remove").forEach((el) => {
       el.addEventListener("click", (e) => {
         e.preventDefault();
@@ -195,6 +221,15 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt
     render();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); render(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    render();
+  });
+
   render();
   window.addEventListener("cart:changed", render);
   landSelect.addEventListener("change", render);
diff --git a/src/pages/warenkorb/index.astro b/src/pages/warenkorb/index.astro
index c5b28d3..833fed8 100644
--- a/src/pages/warenkorb/index.astro
+++ b/src/pages/warenkorb/index.astro
@@ -28,6 +28,7 @@ const t = useTranslations(lang);
           <div id="summary-items" class="checkout-summary"></div>
           <div class="summary-row"><span>{t.cart.subtotal}</span><span id="sum-subtotal">0,00 €</span></div>
           <div class="summary-row discount-row" id="discount-row" style="display:none;"><span>{t.cart.discount}</span><span id="sum-discount">-0,00 €</span></div>
+          <div class="summary-row discount-row" id="partner-discount-row" style="display:none;"><span>{t.cart.partnerDiscount}</span><span id="sum-partner-discount">-0,00 €</span></div>
           <div class="coupon-row">
             <label for="coupon-input">{t.cart.couponLabel}</label>
             <div class="coupon-input-group">
@@ -36,6 +37,14 @@ const t = useTranslations(lang);
             </div>
             <p class="small" id="coupon-status"></p>
           </div>
+          <div class="coupon-row">
+            <label for="partner-code-input">{t.cart.partnerCodeLabel}</label>
+            <div class="coupon-input-group">
+              <input type="text" id="partner-code-input" placeholder={t.cart.partnerCodePlaceholder} />
+              <button type="button" id="partner-code-apply" class="btn btn-outline btn-sm">{t.cart.partnerCodeApply}</button>
+            </div>
+            <p class="small" id="partner-code-status"></p>
+          </div>
           <div class="ship-country-row">
             <label for="cart-land">📦 {t.checkout.country}</label>
             <select id="cart-land">
@@ -57,18 +66,18 @@ const t = useTranslations(lang);
   </section>
 </Layout>
 
-<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart }}>
+<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove, buyNowLabel: t.cart.buyNow, keptInCartLabel: t.cart.keptInCart, partnerCodeInvalid: t.cart.partnerCodeInvalid, partnerCodeAppliedTemplate: t.cart.partnerCodeApplied("__C__"), partnerCodeRemoveLabel: t.cart.partnerCodeRemove }}>
   // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
-  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel };
+  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel };
 </script>
 <script type="module">
-  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, istAusgewaehlt, setAusgewaehlt } from "../../scripts/cart";
+  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon, appliedPartnerCode, partnerCodeDiscount, setPartnerCode, clearPartnerCode, totalDiscount, istAusgewaehlt, setAusgewaehlt } from "../../scripts/cart";
   import { formatPrice } from "../../i18n/format";
   import { getProduct, products } from "../../data/products";
   import { berechneVersandkosten } from "../../data/versand";
 import { effektiverZeilenpreis, mengenrabattProzent } from "../../data/rabatt";
 
-  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel } = window.__cartVars;
+  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel, buyNowLabel, keptInCartLabel, partnerCodeInvalid, partnerCodeAppliedTemplate, partnerCodeRemoveLabel } = window.__cartVars;
   const landSelect = document.getElementById("cart-land");
 
   function render() {
@@ -136,7 +145,9 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../data/rabatt";
     const shipping = berechneVersandkosten(landSelect.value, ausgewaehlteZeilen.map(({ item: i }) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
     const coupon = appliedCoupon();
     const discount = couponDiscount(subtotal);
-    const total = Math.max(0, subtotal - discount) + shipping;
+    const partnerCode = appliedPartnerCode();
+    const partnerDiscount = partnerCodeDiscount(subtotal);
+    const total = Math.max(0, subtotal - totalDiscount(subtotal)) + shipping;
     document.getElementById("sum-subtotal").textContent = formatPrice(subtotal, cartLang);
     document.getElementById("sum-shipping").textContent = shipping === 0 ? freeLabel : formatPrice(shipping, cartLang);
     document.getElementById("sum-total").textContent = formatPrice(total, cartLang);
@@ -158,6 +169,21 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../data/rabatt";
       couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
     }
 
+    const partnerDiscountRow = document.getElementById("partner-discount-row");
+    const partnerStatus = document.getElementById("partner-code-status");
+    const partnerInput = document.getElementById("partner-code-input");
+    if (partnerCode && partnerDiscount > 0) {
+      partnerDiscountRow.style.display = "flex";
+      document.getElementById("sum-partner-discount").textContent = "-" + formatPrice(partnerDiscount, cartLang);
+      partnerStatus.innerHTML = `✅ ${partnerCodeAppliedTemplate.replace("__C__", partnerCode.code)} <a href="#" id="partner-code-clear">✕ ${partnerCodeRemoveLabel}</a>`;
+      partnerInput.value = partnerCode.code;
+      const partnerClearLink = document.getElementById("partner-code-clear");
+      if (partnerClearLink) partnerClearLink.addEventListener("click", (e) => { e.preventDefault(); clearPartnerCode(); render(); });
+    } else {
+      partnerDiscountRow.style.display = "none";
+      partnerStatus.textContent = partnerInput.dataset.invalid === "1" ? partnerCodeInvalid : "";
+    }
+
     itemsEl.querySelectorAll("button, a.remove").forEach((el) => {
       el.addEventListener("click", (e) => {
         e.preventDefault();
@@ -195,6 +221,15 @@ import { effektiverZeilenpreis, mengenrabattProzent } from "../../data/rabatt";
     render();
   });
 
+  document.getElementById("partner-code-apply").addEventListener("click", () => {
+    const input = document.getElementById("partner-code-input");
+    const code = input.value.trim();
+    if (!code) { clearPartnerCode(); render(); return; }
+    setPartnerCode(code);
+    input.dataset.invalid = appliedPartnerCode() ? "0" : "1";
+    render();
+  });
+
   render();
   window.addEventListener("cart:changed", render);
   landSelect.addEventListener("change", render);
diff --git a/src/scripts/cart.ts b/src/scripts/cart.ts
index 0229036..6e3c16c 100644
--- a/src/scripts/cart.ts
+++ b/src/scripts/cart.ts
@@ -4,6 +4,7 @@
 import { getProduct } from "../data/products";
 import { effektiverZeilenpreis } from "../data/rabatt";
 import { findeGutschein, gutscheinRabatt, type Gutschein } from "../data/gutscheine";
+import { findePartnercode, partnercodeRabatt, type Partnercode } from "../data/partnercodes";
 
 export interface CartItem {
   slug: string;
@@ -130,3 +131,43 @@ export function couponDiscount(subtotal: number): number {
   const g = appliedCoupon();
   return g ? gutscheinRabatt(g, subtotal) : 0;
 }
+
+// Partner-/Influencer-Rabattcodes — eigener, unabhängiger "Slot" neben dem allgemeinen
+// Gutscheincode (siehe src/data/partnercodes.ts für den fachlichen Hintergrund). Eigener
+// localStorage-Schlüssel, damit beide Codes unabhängig voneinander gesetzt/entfernt werden können.
+const PARTNER_CODE_KEY = "vandiy_partnercode_v1";
+
+export function getPartnerCode(): string {
+  if (typeof localStorage === "undefined") return "";
+  return localStorage.getItem(PARTNER_CODE_KEY) || "";
+}
+
+export function setPartnerCode(code: string) {
+  localStorage.setItem(PARTNER_CODE_KEY, code.trim());
+  window.dispatchEvent(new CustomEvent("cart:changed", { detail: getCart() }));
+}
+
+export function clearPartnerCode() {
+  localStorage.removeItem(PARTNER_CODE_KEY);
+  window.dispatchEvent(new CustomEvent("cart:changed", { detail: getCart() }));
+}
+
+/** Der aktuell eingelöste Partnercode, falls der gespeicherte Code (noch) gültig ist. */
+export function appliedPartnerCode(): Partnercode | undefined {
+  const code = getPartnerCode();
+  if (!code) return undefined;
+  return findePartnercode(code);
+}
+
+/** Rabatt-Betrag in Euro, den der eingelöste Partnercode auf die gegebene Zwischensumme gibt. */
+export function partnerCodeDiscount(subtotal: number): number {
+  const p = appliedPartnerCode();
+  return p ? partnercodeRabatt(p, subtotal) : 0;
+}
+
+/** Gutschein und Partnercode können gleichzeitig eingelöst sein (zwei unabhängige Codes) — die
+ *  Summe wird hier auf die Zwischensumme gedeckelt, damit der Gesamtpreis nie unter 0 € rutscht,
+ *  egal wie großzügig die einzelnen Rabatte sind. */
+export function totalDiscount(subtotal: number): number {
+  return Math.min(subtotal, couponDiscount(subtotal) + partnerCodeDiscount(subtotal));
+}