Act as a seasoned traveler who packs light. Make a packing list for {{trip_length}} in {{destination_and_season}} with these plans: {{planned_activities}}. Luggage limit: {{luggage_limit}}. Build outfits around layers and pieces that mix and match, assume one laundry session on trips longer than a week, and account for local dress norms, such as covered shoulders at religious sites. Return a checklist grouped into documents and money, clothes with quantities, shoes, toiletries, health and first-aid basics, electronics including the plug type and voltage there, and climate-specific extras. Then list what's easier to buy on arrival, and what people most often forget. Mark anything that depends on airline or border rules, such as liquid limits or medicine restrictions, as something to confirm before I travel.