98th Academy Award-themed cryptic crossword

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Across
  1. 4. Leo's your uncle? (3)
  2. 5. Saint Bravo surrounded by unselfish Louis in true story of survival (4,3)
  3. 7. The heart of this amelioration got abducted (4)
  4. 9. Mary Frankentë!? (9)
  5. 10. Animated film in which story arc obviously ends happily (4)
  6. 11. Skiers sold kilo to inhale dinitrogen, becoming criminals (7)
  7. 14. Weirdly I, angrier logger (8)
  8. 17. Sounds like happy is aunt (6)
  9. 20. Japan, without German approval, joins a greeting for Cannes prize winner (6)
  10. 22. Triple battery in and around velocity and time near the beginning of really fiery third (6)
  11. 24. Moving anthem for a tragic child (6)
  12. 25. Hunter ruminates loss of Forevergreen director and Frankenstein sound designer (4)
Down
  1. 1. National Treasure's Koala from Kuala Lumpur hopping on oddly worded first pairs (6)
  2. 2. No solo aim changed by opening song of concert (9)
  3. 3. Producer and actor is in hole, so I've heard (4)
  4. 6. Weird Super Smash Bros. character is perfectly short? (11)
  5. 8. Rocky resigns from short film (7)
  6. 12. Permanent gift for Borg child (12)
  7. 13. Bong Joon-Ho's pig movie where Juliet's left and house's last becomes alpha, OK! (8)
  8. 15. Bug on Ian's computer containing best picture nominee (7)
  9. 16. First couple of most nominated movie to join rodent in favor of international film (5)
  10. 18. BEST PICTURE NOMINEE SPOIL, "Thank you" is sent by text (5)
  11. 19. Armando cut a samourai's sides (5)
  12. 21. Documentary filmmaker heard discussing golf and beer (8)
  13. 23. Queen of England, with lack of artificial intelligence, turned into a winning scientist (6)