DEVELOPING A BUSINESS MODEL CANVAS FOR ECO-TOURISM : INTEGRATING DESIGN THINKING AND DIGITAL MARKETING FOR SUSTAINABILITY - Siahaan, Febri; Susilowati, Susilowati; Bakti, Indra; Muslyhah, Siti; Pertiwi, Dwi Maylani (Jurnal Ilmiah Manajemen, Ekonomi, & Akuntansi (MEA), 2026)