feat: add import duties shipping conditions (DDP/DAP) to Buy and Home pages

src/pages/Buy.jsx

@@ -98,7 +98,7 @@ const faqItems = [
   },
   {
     question: 'What about customs and import taxes?',
-    answer: 'The displayed price does not include customs duties or import taxes, which vary by country. You may be responsible for these fees upon delivery.',
+    answer: 'EU/UK and US/Canada orders ship duty-paid (DDP) — no surprise fees on delivery. Other destinations ship DAP, meaning local import duties and taxes may apply upon delivery.',
   },
   {
     question: 'Can I upgrade from Lite to Wireless later?',
@@ -372,6 +372,25 @@ function ProductCardsSection() {
           </Grid>
         ))}
       </Grid>
+
+      {/* Lead time & shipping notice */}
+      <Box sx={{ textAlign: 'center', mt: 5, mb: 6 }}>
+        <Typography
+          variant="body1"
+          sx={{ fontWeight: 600, color: 'text.primary' }}
+        >
+          Current Lead time: 90 days after purchase
+        </Typography>
+        <Typography
+          variant="body2"
+          color="text.secondary"
+          sx={{ maxWidth: 600, mx: 'auto', lineHeight: 1.7, mt: 1 }}
+        >
+          <strong>Import duties:</strong> EU/UK + US/Canada ship duty-paid (DDP).
+          <br />
+          Other destinations may incur local import duties/taxes on delivery (DAP).
+        </Typography>
+      </Box>
     </Container>
   );
 }

src/pages/Home.jsx

@@ -765,6 +765,20 @@ function ProductsSection() {
         >
           Current Lead time: 90 days after purchase
         </Typography>
+        <Typography
+          variant="body2"
+          sx={{
+            color: "text.secondary",
+            mt: 1,
+            maxWidth: 520,
+            mx: "auto",
+            lineHeight: 1.7,
+          }}
+        >
+          <strong>Import duties:</strong> EU/UK + US/Canada ship duty-paid (DDP).
+          <br />
+          Other destinations may incur local import duties/taxes on delivery (DAP).
+        </Typography>
       </Box>
 
       <Typography