Good, I have the full content of all three files. Now let me make all the changes in parallel.

All five modifications are complete:

1. Icons for 購入/賃貸 -- Added ShoppingCart icon for 購入 and KeyRound icon for 賃貸, matching the existing icon style of the other popular conditions.
2. Per-category reset buttons -- Every accordion category now has a small "リセット" button (with an X icon) that appears in the trigger row when that category has active selections, clearing only that category's state.
3. Expanded language list -- Added Português, हिन्दी, Bahasa Indonesia (each in native script), plus renamed the section title to "対応言語 (Language)".
4. Filter background -- Changed the filter sidebar and mobile sheet backgrounds from bg-card to bg-background to match the site background color.
5. Navbar additions -- Added "よくある質問" (with HelpCircle), "チャットルーム" (with MessageCircle), and a round account icon (User inside a circular muted bg), all visible on desktop and collapsed behind the menu button on mobile.

Now I have the full picture. The navbar uses bg-card which is oklch(1 0 0) (pure white). The page background is bg-background which is oklch(0.975 0.002 75) (warm off-white). I need to make the --background token the same as --card so everything is uniform white like the navbar.

Now the --background token matches --card (oklch(1 0 0) -- pure white), so the page background, filter sidebar, navbar, and all cards share the same clean white background throughout the entire app.