Help me design a marketing attribution framework for [COMPANY]. Sales cycle: [LENGTH]. Channels: [LIST]. CRM: [TOOL]. Analytics: [TOOL]. Address: 1) First-touch vs. last-touch vs. multi-touch attribution — which fits my sales cycle, 2) How to set up UTM tracking properly across all channels, 3) How to attribute revenue from channels with delayed conversion (SEO, podcasts, events), 4) The "dark funnel" problem — what I'm missing and how to get qualitative data, 5) Which attribution model my CFO will trust for budget decisions, 6) How to measure incrementality (not just correlation), 7) Monthly ...