It's a Wonderful World: 荒廃と隆盛

No. Shuffle the Corruption & Ascension cards separately and place them in their own face-down deck beside the base-game deck. They are still Development cards despite having different backs (p. 1).

Yes. You may always choose either a base-game card or a Corruption & Ascension card from the cards passed to you. After drafting your seventh card, discard any cards remaining in your hand (p. 1).

Subtract your Corrupted Resources from your production of the matching Resource, and the resulting total determines both the cubes you take and your Supremacy score. Production cannot go below zero; if Corruption exceeds production for a Resource, that production is treated as 0 (p. 2).

For each duo-scoring card, count the complete pairs of the indicated card types in your Empire and multiply that number by the listed victory points. Those cards also count normally for the base game's multiplier scoring (p. 2).

No. When drawing after discarding two cards, choose one deck type: draw 5 entirely base-game cards and keep 1, or draw 3 entirely Corruption & Ascension cards and keep 1. The two types cannot be combined in the same draw (p. 3).

If one player is solely first and players tie for second, only first place receives the bonus; if exactly two players tie for first, both receive it; and if three or more players tie for first, nobody receives it. For the Science bonus, each recipient independently chooses either a General or a Financier (p. 3).