v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Inventories - Impact on equity (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity ¥ 15,624,699 $ 2,230,092 ¥ 11,558,060 ¥ 8,132,509 ¥ 5,049,247
Statutory reserves          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 453,625 64,745 368,046 167,679 35,657
Accumulated deficits          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity (2,438,985) (348,113) (5,953,788) (8,709,130) (11,421,145)
Total Company's ordinary shareholders' equity          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 15,624,699 $ 2,230,092 11,558,060 8,132,509 ¥ 5,049,247
As previously reported          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 15,608,824   11,537,950 8,136,405  
As previously reported | Statutory reserves          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 451,506   365,927 168,204  
As previously reported | Accumulated deficits          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity (2,452,741)   (5,971,779) (8,705,759)  
As previously reported | Total Company's ordinary shareholders' equity          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 15,608,824   11,537,950 8,136,405  
Effect of Change          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 15,875   20,110 (3,896)  
Effect of Change | Statutory reserves          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 2,119   2,119 (525)  
Effect of Change | Accumulated deficits          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity 13,756   17,991 (3,371)  
Effect of Change | Total Company's ordinary shareholders' equity          
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES          
Total shareholders equity ¥ 15,875   ¥ 20,110 ¥ (3,896)