Design a sleek and modern logo for the Heartfilian Daily, a prominent news agency in the Great Kingdom of Heartfilia. The logo should prominently feature the initials 'HD' in a clean and elegant font. Consider incorporating elements that convey trustworthiness, reliability, and modernity, such as a stylized globe or a dynamic graphic element. The color scheme should be professional and sophisticated, perhaps using deep blue or charcoal gray to evoke a sense of authority and credibility.