Act as a medieval fantasy illustrator with 10 years of experience in epic battle scenes. Create a highly detailed, dramatic image of a [armored knight] standing defiantly on a [crumbling stone bridge] of a [gothic castle], gripping a glowing broadsword as a [massive winged dragon] with [scorched scales] breathes fire overhead. The knight's [tattered cloak] billows in the wind, his [visor raised] to reveal a determined expression. The castle towers are partially collapsed, with [burning debris] falling into the chasm below. Use dynamic lighting with orange fire glow contrasting against the stormy twilight sky. Include intricate details like the knight's [heraldic insignia], the dragon's [jagged scars], and the bridge's [crumbling masonry]. Render in a semi-realistic painterly style reminiscent of classic fantasy book covers.