Dark Mode UI is the mainstream dark-theme interface language codified by Google's Material Design. Its baseline is a near-black charcoal of #121212 — deliberately not pure black — chosen to reduce eye strain and let elevation read. Depth is communicated not by drop shadows but by compositing semi-transparent white overlays over the ground: the higher an element rises, the lighter its surface becomes.
Accents are desaturated — a soft lavender, a muted teal, a dusty error rose — reserved for interactive emphasis. Body text rides on white at reduced opacity (87% / 60% / 38%), never full strength, so the interface stays calm, legible, and easy on OLED screens at night.
Dark Mode UI 是由 Google Material Design 系统化定义的主流暗色界面语言。它的基底是近黑的炭色 #121212——刻意不用纯黑——以减轻眼睛疲劳，并让"层级"能够被感知。深度不靠投影表达，而是通过在基底上叠加半透明白色来实现：元素抬得越高，其表面就越亮。
强调色都是去饱和的——柔和的薰衣草紫、低调的青绿、暗淡的玫红错误色——只保留给可交互的重点。正文文字以降低的不透明度（高 87% / 中 60% / 禁用 38%）落在白色之上，从不满负荷，让界面在夜间的 OLED 屏幕上保持冷静、清晰而护眼。