睡眠周期阶段可视化

一张舒缓的信息图，在午夜蓝背景上以五个 90 分钟周期可视化整晚睡眠。主图为波浪图：横轴标注时间（晚 10 点至早 6 点），纵轴显示睡眠深度（清醒、REM、浅睡、深睡）。波浪以柔和渐变色填充：REM 为浅薰衣草，深睡为深靛蓝，浅睡为薄雾紫藤色，清醒微觉醒为暖白点。各周期以小圆圈编号。注释指向清晨最长 REM 窗口写道：「睡眠周期阶段可视化」侧边栏列出各阶段功效，顶部深色卡片圆润无衬线标题。

A soothing infographic visualising a full night of sleep across five 90-minute cycles on a midnight blue background. The main graphic is a wave chart: the horizontal axis marks hours (10 PM to 6 AM) and the vertical axis shows sleep depth (Wake, REM, Light, Deep). The wave oscillates in soft gradient fills: pale lavender for REM, deep indigo for deep sleep, misty periwinkle for light sleep, and a warm white dot for each Wake micro-arousal. Each cycle is numbered in small circles. Annotations point to the longest REM window near morning: "REM sleep is when emotional memories are processed and creativity surges." A sidebar strip lists stage benefits: immunity boost, memory consolidation, tissue repair. Title in a rounded sans on a dark card at top.