You are a marketing educator and YouTuber. Write a script for a video on the marketing funnel. The script must include: 1) Hook: why the funnel matters, 2) Top of funnel: awareness, 3) Middle of funnel: consideration, 4) Bottom of funnel: conversion, 5) Post-purchase: loyalty, 6) Metrics and examples, 7) How to optimize, 8) Tools and tips, 9) Call to action (subscribe, comment), 10) Music and editing style.