I need precise, interactive sales reports built directly in Odoo and paired with a clean, at-a-glance dashboard. The focus is strictly on sales data, so the report must surface two key insights: • Revenue by product • Sales by region Both views should refresh in real time from our live database and be drill-down friendly so I can move from a summary chart straight into the underlying orders with a single click. I already have the sales module fully populated, so your job is to design the report templates, configure the measures, and lay out the dashboard inside Odoo Studio (or through custom XML/OWL if that is faster). Please keep the styling consistent with the native Odoo theme and make sure the widgets look good on desktop and tablet. Once complete, walk me through how to duplicate or tweak the reports so I can maintain them without touching code.