Cryptic crossword No 3,683

Across

1. Inarticulate and incoherent? (10)
2. Abstract art... Pure and ultimately eye-opening (8)
3. One's unfortunate dates (4)
4. Motivated at first, declining rapidly into very excruciating nonchalance (6)
5. Drone drops first bomb on insurgent leader in evacuated zone (6)
6. Lodges legislation, initially to stop problematic child workers (8)
7. Feline at heart, just like a big cat? (6)
8. Quivering in a little bathrobe (6)
9. People sometimes say this, first of all, to get attention (4)
10. Lectured by judge in case of do-over (6)
11. Used to be you could count on it (6,4)
12. Purchase slice of cheese... is it added to quinoa salad? (11)
13. Quietly about to make introduction (6)

Down

1. Attempt to climb, holding on to bars (6)
2. Essay's wordcount requirement raised - depressing! (6)
3. Contribution to Wikipedia? Bet I could type one or two? (8)
4. Averse to rambling in gorges (8)
5. Jackleg's beginning to groan about what's said by "experts" (6)
6. Extremely reckless free-running routes (6)
7. Hurry up, I refuse to be entertained by clowns! (4,2,2)
8. Arrangement of memorial for widow's ultimate heartbreak (6)
9. Defy the odds to avoid psycho-ass dirtbikers... they're thick and greasy? (11)
10. Leave my heart ultimately broken by end of relationship (6)
11. Bunk in dormitory is somewhat nasty (6)
12. Quietly losing it after passing university with distinction (8)
13. Criminal lied, committing statutory perjury at first with ease (6)