"Untold" 是一张纪录片频道片头用的标题卡，采用沉静的电影感风格。干净的白色衬线字位于两侧幽暗的峡谷崖壁之间，前方是晨雾笼罩的山谷，上方一行小字写着「纪录片频道」，下方是一句短标语。可以换成你自己的频道名或片名。

Create a 16:9 YouTube documentary-channel intro title card for a channel named "UNTOLD". Complete cinematic editorial composition, built for instant recognition on a TV and mobile thumbnail. Background: a deep blue-black atmospheric landscape at pre-dawn, viewed through a narrow canyon-like opening; distant layered ridgelines fade into dense blue-gray haze, one small warm amber sunline at the horizon, subtle airborne dust, fine 35mm film grain, soft edge vignette. A thin anamorphic horizontal lens flare runs across the center. Typography is the focal point. Center "UNTOLD" at 82% frame width, custom broad classical uppercase serif lettering: wide proportions, monumental thick-and-thin stroke contrast, deeply cut wedge serifs, precise angled terminals, spacious tracking. Clean ivory-white letter faces with a faint cold-blue edge grade; no distressed texture, no chrome, no stone material. Use crisp editorial contours and a restrained dark shadow separation from the landscape. Above, small centered tracking-spaced uppercase text: "DOCUMENTARY CHANNEL". Below, centered small uppercase line: "REAL STORIES. UNSEEN." in warm amber. Keep the title sharply legible while the environment remains soft and deep. Layout: generous negative space in the upper third; micro label at y=24%; main title centered y=39–58%; tagline y=67%. Cinematic teal-to-black grading, controlled amber horizon accent, volumetric depth haze, high-resolution key art, professional streaming-platform title sequence, no logos, no people, no extra text, no border.