Clearer Game Text and Equipment Details

What changed

• The Referral page now uses the simple heading Qualified progression and explains exactly which new levels count without internal development terminology.
• Arena, Battle, Crafting, Clan, Expedition, Pet, Replay, Guide and FAQ text now describes what players can do and what happens in clear game language.
• Hovering, focusing or tapping an item already equipped in the right-side Equipment panel opens one Equipped stats card instead of comparing the item with itself.
• Inventory and Equipment candidate items still show the inspected item and currently equipped item side by side with their score and stat differences.