Act as a QA lead who tests websites on real devices. Create a mobile QA checklist for {{website_url}}, covering these pages: {{key_pages}}. Start with a device plan: a small phone about 375 pixels wide, a large phone, a mid-range Android phone and a tablet, using Safari on iPhone and Chrome on Android, plus the in-app browsers that open when people tap links on social media. Then checks for every page, including those that usually slip through: - No sideways scrolling or cut-off text, from 320 pixels wide up - Tap targets big enough and far enough apart - Form text at 16px or larger so iPhones don't zoom in, and the right keyboard for email, phone and numbers - Sticky headers, chat buttons and cookie banners that cover content or the on-screen keyboard - Full-height sections that jump when the browser bar hides - Content hidden under the notch or home bar - Menus, dialogs and carousels that open, close and scroll properly - Tap-to-call, map and directions links - Pinch-to-zoom still allowed, and layouts that hold with large system text - Speed on a slow connection, and a back button that goes where people expect Return a checklist table with pass and fail columns per device, then a short bug report template: device, browser, steps, expected, actual and screenshot.