Inclusion Criteria:
* Age 18 to 75 years (inclusive), male or female
* Diagnosis of essential hypertension
* Mean seated systolic blood pressure (msSBP) ≥ 140 mmHg and \< 180 mmHg at screening
* At screening, subjects must meet one of the following criteria (A or B):
A: Uncontrolled hypertension (uHTN)
* Receiving a stable regimen of the following antihypertensive drugs at the maximum tolerated dose for at least 4 weeks prior to screening (as combination therapy or single-pill combination), as judged by the investigator, and in whom an additional antihypertensive agent is considered at screening:
ACEI/ARB/ARNI + diuretic CCB + diuretic Beta-blockers used for the treatment of other conditions (e.g., migraine, heart failure, coronary artery disease) are not considered antihypertensive agents.
B: Resistant hypertension (rHTN):
* Receiving a stable regimen of the following antihypertensive drugs at the maximum tolerated dose for at least 4 weeks prior to screening (as combination therapy or single-pill combination), as judged by the investigator, and in whom an additional antihypertensive agent is considered at screening:
ACEI/ARB/ARNI + CCB + diuretic ACEI/ARB/ARNI + CCB + diuretic + beta-blocker/aldosterone receptor antagonist/centrally acting agent/alpha-blocker Beta-blockers used for the treatment of other conditions (e.g., migraine, heart failure, coronary artery disease) are not considered antihypertensive agents.
* msSBP ≥ 140 mmHg and \< 180 mmHg at the end of the single-blind run-in period or prior to randomization
* All male subjects and female subjects of childbearing potential agree to use highly effective contraceptive methods from the date of signing the ICF until 1 month after discontinuation of study treatment.
Exclusion Criteria:
* Severe hypertension (msSBP ≥ 180 mmHg and/or msDBP ≥ 110 mmHg); malignant hypertension, hypertensive emergency, hypertensive crisis, or hypertensive encephalopathy;
* History or diagnostic evidence of secondary hypertension, including but not limited to: renal parenchymal hypertension, renovascular hypertension (unilateral or bilateral renal artery stenosis), coarctation of the aorta, primary aldosteronism, Cushing's syndrome, pheochromocytoma, polycystic kidney disease, and drug-induced hypertension;
* Medication compliance \< 80% or \> 120% during the single-blind run-in period;
* Clinically significant laboratory abnormalities, including but not limited to: serum ALT and/or AST \> 2.5 × upper limit of normal (ULN); total bilirubin \> 2 × ULN; eGFR \< 30 mL/min/1.73 m² estimated by the simplified Modification of Diet in Renal Disease (MDRD) equation; any clinically significant laboratory abnormality that, in the investigator's opinion, may interfere with the evaluation of efficacy and/or safety data of this study; type 1 diabetes mellitus or poorly controlled type 2 diabetes mellitus (HbA1c \> 8.0%);
* Severe obesity with body mass index (BMI) \> 40 kg/m² (BMI = weight (kg) / height² (m²));
* Hemoglobin \< 100 g/L, or blood transfusion for anemia within 3 months prior to screening;
* Subjects with a documented history of anxiety or depression;
* Female subjects who are pregnant, breastfeeding, or have a positive pregnancy test
