diff --git a/.env.local.example b/.env.local.example
index 2fa613e3e..9872e55dd 100644
--- a/.env.local.example
+++ b/.env.local.example
@@ -14,3 +14,6 @@ ANTHROPIC_API_KEY=
 NEXT_PUBLIC_ALGOLIA_APP_ID=
 NEXT_PUBLIC_ALGOLIA_SEARCH_API_KEY=
 NEXT_PUBLIC_ALGOLIA_INDEX_NAME=
+
+# Required for Contact Sales form submission (n8n → Attio pipeline)
+NEXT_PUBLIC_ATTIO_WEBHOOK_URL=
diff --git a/app/en/resources/contact-us/contact-cards.tsx b/app/en/resources/contact-us/contact-cards.tsx
index 292ae1ca9..aaa95f343 100644
--- a/app/en/resources/contact-us/contact-cards.tsx
+++ b/app/en/resources/contact-us/contact-cards.tsx
@@ -1,30 +1,247 @@
 "use client";
 
 import {
+  Button,
   Dialog,
   DialogContent,
+  DialogHeader,
+  DialogTitle,
   Discord,
   Github,
+  Input,
+  Textarea,
 } from "@arcadeai/design-system";
-import { HeartPulse, Mail, Shield, Users } from "lucide-react";
+import {
+  AlertOctagon,
+  CheckCircle,
+  HeartPulse,
+  Mail,
+  Shield,
+  Users,
+} from "lucide-react";
 import posthog from "posthog-js";
-import { useEffect, useRef, useState } from "react";
+import type React from "react";
+import { useState } from "react";
 import { QuickStartCard } from "../../../_components/quick-start-card";
 
+const WEBHOOK_URL = process.env.NEXT_PUBLIC_ATTIO_WEBHOOK_URL;
+
+function getUtmParams(): Record<string, string> {
+  if (typeof window === "undefined") {
+    return {};
+  }
+  const params = new URLSearchParams(window.location.search);
+  const utms: Record<string, string> = {};
+  for (const key of [
+    "utm_source",
+    "utm_medium",
+    "utm_campaign",
+    "utm_content",
+  ]) {
+    const value = params.get(key);
+    if (value) {
+      utms[key] = value;
+    }
+  }
+  return utms;
+}
+
+function collectFormFields(formData: FormData): Record<string, string> {
+  const fields: Record<string, string> = {};
+  for (const [key, value] of formData.entries()) {
+    if (key === "website") {
+      continue;
+    }
+    if (typeof value === "string" && value.trim()) {
+      fields[key] = value.trim();
+    }
+  }
+  return fields;
+}
+
+async function submitForm(
+  fields: Record<string, string>
+): Promise<{ success: boolean; error?: string }> {
+  if (!WEBHOOK_URL) {
+    return { success: false, error: "Webhook URL not configured" };
+  }
+
+  const payload = {
+    submission_id: crypto.randomUUID(),
+    form_type: "contact_sales",
+    fields,
+    context: {
+      pageUri: window.location.href,
+      pageName: "Contact Sales",
+      timestamp: new Date().toISOString(),
+      ...getUtmParams(),
+    },
+  };
+
+  const response = await fetch(WEBHOOK_URL, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(payload),
+  });
+
+  if (response.ok) {
+    return { success: true };
+  }
+  return {
+    success: false,
+    error: `HTTP ${response.status}: ${response.statusText}`,
+  };
+}
+
+async function submitHoneypot(): Promise<void> {
+  if (!WEBHOOK_URL) {
+    return;
+  }
+  try {
+    await fetch(WEBHOOK_URL, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ _hp: true }),
+    });
+  } catch {
+    // Swallow errors for spam submissions
+  }
+}
+
+function ContactSalesForm({ onSuccess }: { onSuccess: () => void }) {
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState("");
+
+  const handleSubmit = async (e: React.FormEvent<HTMLFormElement>) => {
+    e.preventDefault();
+    setIsSubmitting(true);
+    setError("");
+
+    const formData = new FormData(e.currentTarget);
+    const honeypot = formData.get("website") as string;
+
+    if (honeypot) {
+      await submitHoneypot();
+      onSuccess();
+      return;
+    }
+
+    const fields = collectFormFields(formData);
+
+    try {
+      const result = await submitForm(fields);
+
+      if (result.success) {
+        posthog.capture("contact_sales_form_submitted", {
+          form_type: "contact_sales",
+          page: "Contact Sales",
+          source: "contact_us_page",
+        });
+        onSuccess();
+      } else {
+        posthog.capture("contact_sales_form_submit_failed", {
+          form_type: "contact_sales",
+          page: "Contact Sales",
+          error: result.error,
+        });
+        setError("Oops! Something went wrong. Please try again.");
+      }
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : "Network error";
+      posthog.capture("contact_sales_form_submit_failed", {
+        form_type: "contact_sales",
+        page: "Contact Sales",
+        error: errorMessage,
+      });
+      setError("Oops! Something went wrong. Please try again.");
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <form className="flex flex-col gap-3" onSubmit={handleSubmit}>
+      <div className="flex gap-3 max-[767px]:flex-col">
+        <Input
+          aria-label="First Name"
+          className="flex-1 bg-gray-800/50 text-white"
+          maxLength={256}
+          name="firstname"
+          placeholder="First Name"
+          required
+          type="text"
+        />
+        <Input
+          aria-label="Last Name"
+          className="flex-1 bg-gray-800/50 text-white"
+          maxLength={256}
+          name="lastname"
+          placeholder="Last Name"
+          required
+          type="text"
+        />
+      </div>
+      <Input
+        aria-label="Work Email"
+        className="bg-gray-800/50 text-white"
+        maxLength={256}
+        name="email"
+        placeholder="Work Email"
+        required
+        type="email"
+      />
+      <Input
+        aria-label="Company"
+        className="bg-gray-800/50 text-white"
+        maxLength={256}
+        name="company"
+        placeholder="Company"
+        required
+        type="text"
+      />
+      <Textarea
+        aria-label="How can we help?"
+        className="min-h-[100px] resize-y bg-gray-800/50 text-white"
+        maxLength={5000}
+        name="message"
+        placeholder="How can we help?"
+        rows={4}
+      />
+      {/* Honeypot field — hidden from real users */}
+      <div aria-hidden="true" className="absolute -left-[9999px]">
+        <input autoComplete="off" name="website" tabIndex={-1} type="text" />
+      </div>
+      {error && (
+        <div className="flex items-center gap-3 rounded-lg bg-red-500/10 p-3 text-white">
+          <AlertOctagon className="h-5 w-5 shrink-0" />
+          <span className="text-sm">{error}</span>
+        </div>
+      )}
+      <Button className="w-full" disabled={isSubmitting} type="submit">
+        {isSubmitting ? "Please wait..." : "Get in touch"}
+      </Button>
+    </form>
+  );
+}
+
+function SuccessMessage({ onClose }: { onClose: () => void }) {
+  return (
+    <div className="flex flex-col items-center justify-center pt-6 pb-2 text-center">
+      <div className="mb-4 rounded-full bg-green-500/10 p-3">
+        <CheckCircle className="h-6 w-6 text-green-500" />
+      </div>
+      <h3 className="mb-1 font-semibold text-gray-100 text-lg">Thank you!</h3>
+      <p className="text-gray-400 text-sm">We'll be in touch shortly.</p>
+      <Button className="mt-6 w-full" onClick={onClose} variant="default">
+        Close
+      </Button>
+    </div>
+  );
+}
+
 export function ContactCards() {
   const [isSalesModalOpen, setIsSalesModalOpen] = useState(false);
-  const scriptLoadedRef = useRef(false);
-
-  useEffect(() => {
-    // Load HubSpot script once
-    if (!scriptLoadedRef.current) {
-      const script = document.createElement("script");
-      script.src = "https://js-na2.hsforms.net/forms/embed/39979532.js";
-      script.defer = true;
-      document.body.appendChild(script);
-      scriptLoadedRef.current = true;
-    }
-  }, []);
+  const [isSubmitted, setIsSubmitted] = useState(false);
 
   const handleContactSalesClick = () => {
     posthog.capture("Contact sales modal opened", {
@@ -33,6 +250,11 @@ export function ContactCards() {
     setIsSalesModalOpen(true);
   };
 
+  const handleClose = () => {
+    setIsSalesModalOpen(false);
+    setIsSubmitted(false);
+  };
+
   return (
     <>
       <div className="mt-16 grid gap-8 md:grid-cols-2 lg:grid-cols-3">
@@ -74,18 +296,18 @@ export function ContactCards() {
         />
       </div>
       <Dialog
-        onOpenChange={(open) => !open && setIsSalesModalOpen(false)}
+        onOpenChange={(open) => !open && handleClose()}
         open={isSalesModalOpen}
       >
         <DialogContent className="border-gray-800 bg-gray-900 sm:max-w-[500px]">
-          <div className="py-4">
-            <div
-              className="hs-form-frame"
-              data-form-id="aa1d8f09-6368-461d-bb27-d49bc056e3df"
-              data-portal-id="39979532"
-              data-region="na2"
-            />
-          </div>
+          <DialogHeader>
+            <DialogTitle className="text-gray-100">Contact Sales</DialogTitle>
+          </DialogHeader>
+          {isSubmitted ? (
+            <SuccessMessage onClose={handleClose} />
+          ) : (
+            <ContactSalesForm onSuccess={() => setIsSubmitted(true)} />
+          )}
         </DialogContent>
       </Dialog>
     </>