在网页画布上玩经典「红灯停、绿灯行」：老师背对你时按节奏数 1、2、3，这时可以前进；老师回头（红灯）时必须立刻停住。选可爱的小动物角色，共 20 关，支持人机对战或本地双人对战。
A browser Red Light, Green Light: move forward while the teacher counts “One, Two, Three” with their back turned; freeze when they turn around. Pick cute animal characters, 20 rounds, vs CPU or two players on one device.
基本规则
每关需在 20 秒内冲到终点线；超时在人机模式下会本局结束。
Each round you have 20 seconds to reach the finish; in vs-CPU mode, running out of time ends the run.
每人有 3 点生命。在红灯时若仍在移动，会被抓到并扣 1 点生命；生命耗尽则出局。
Each player has 3 hearts. Moving on red costs one heart; at zero hearts you are out.
人机模式：你要比电脑先到达终点（或电脑出局后你仍存活）才能进入下一关；通关全部 20 关即胜利。若电脑先到终点、你生命耗尽或与电脑同时相关判定失败，则本局失败。
Vs CPU: beat the CPU to the line (or outlast them) to advance; clear all 20 rounds to win. Lose if the CPU wins the race first, you run out of hearts, or other fail states apply.
双人对战：进行 20 局赛跑，每局先过终点者胜一局；局数比完后胜场多者赢（平局会显示和局）。
Two players: 20 races; each race goes to whoever crosses first. After 20 races, most wins takes the match (ties possible).
标题画面 · 选单操作
在画布上切换「人机对战 / 双人对战」，点击动物头像选择角色（人机模式下对手由电脑随机扮演）。
Tap the mode bar, tap head icons to choose characters (CPU picks its own animal in vs-CPU).
点击「开始游戏」按钮开始；也可按 Space 空格键开始。
Tap Start or press Space.
游戏结束（胜利或失败）后，按 Space 或点击画面可返回标题。
After win/lose, press Space or tap the canvas to return to the title screen.
游戏中 · 移动
仅在老师数 1、2、3（绿灯阶段）时按住移动键或触屏区域才会前进；红灯时请勿移动。
Only hold your move control during the 1-2-3 count; release or stay still on red.
人机模式 — 玩家：W 按住前进；触屏设备可按住画布下半部分前进。
Vs CPU: hold W or hold the lower half of the canvas.
双人对战 — 玩家 1：W 或画布左半边的下半部分；玩家 2：↑（方向键上）或画布右半边的下半部分。
Two players: P1 — W or lower left half; P2 — ↑ or lower right half.
窗口失去焦点时会松开所有按键状态，避免卡住。
Switching away from the tab clears held keys.
声音与无障碍提示
老师会英文语音念出 “One / Two / Three”；浏览器需允许网页使用语音合成（Web Speech）。被抓到或通关时也会有简短语音提示与音效（若浏览器允许音频）。
The teacher speaks the count in English via the browser’s speech synthesis; caught/clear events may also use voice and Web Audio where allowed.