Do landing pages hurt SEO?
No. Campaign pages typically aren't intended to rank, and they can be excluded from indexing where appropriate.
Landing Page Design
Sending paid traffic to your homepage is the most expensive habit in local marketing.

A homepage has to serve everyone. A landing page serves one person arriving from one specific ad with one specific expectation, which is exactly why it converts so much better.
Match the message, remove the distractions, make the action obvious. That's the whole discipline.
Landing pages should be measured, not admired. We set up tracking from day one so you know cost per lead, not just clicks.
When numbers come in, changes are cheap: headline, offer framing, form length, proof placement.
Questions
No. Campaign pages typically aren't intended to rank, and they can be excluded from indexing where appropriate.
One per distinct offer or audience. Reusing a single page across different ads dilutes the match.
Tell us about the offer and the audience and we'll outline the page.