Missing APFS partition

After trying to create hybrid MBR for dual-booting Windows in UEFI and BIOS with gdisk, main APFS partition (container) disappeared, leaving empty space in GPT partition table. It's only possible to see with sudo gpt -r show /dev/disk1 (space from 409640 to 732027536).

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 732027536

732437176 195912 2 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

732633088 32768 3 GPT part - E3C9E316-0B5C-4DB8-817D-F92DF00215AE

732665856 244107264 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

Disk utility and gdisk don't show this empty space at all. It's also impossible to repair partition structure with Disk Utility. How to recover missing APFS container?