每天拿起手机，想着"只看五分钟"。放下的时候，却发现两个小时过去了。刷到的视频一个比一个精彩，可关掉屏幕，你想不起来刚才到底看了什么。
Every day you pick up your phone, thinking "just five minutes." When you put it down, two hours have passed. The videos get more and more exciting, but when you turn off the screen, you can't remember what you just watched.
这真的不是你的错。是那些精心设计的算法，在争夺你的每一秒注意力。它们让你的大脑习惯了被动接收——笑着、闹着、感动着，却从不需要你真正思考。
It's really not your fault. It's those carefully designed algorithms, fighting for every second of your attention. They train your brain to get used to passive consumption — laughing, gasping, feeling moved, but never needing to truly think.
特别是退休后的朋友。离开了规律的工作节奏，大脑忽然失去了每天的"运动量"。日子变得轻松舒适，可也变得平淡。研究告诉我们一个让人警醒的事实：长期缺乏主动思考，大脑会逐渐萎缩，认知衰退的风险显著上升。 而单纯的散步、打太极，锻炼身体却锻炼不到大脑。
This is especially true for retirees. Without the rhythm of regular work, the brain suddenly loses its daily "workout." Life becomes comfortable but also monotonous. Research tells us a sobering fact: prolonged lack of active thinking leads to gradual brain atrophy and significantly higher risk of cognitive decline. Walking or tai chi exercises the body but doesn't train the brain.
The brain needs its own "gym."
这就是我们做脑伴数独的原因。数独不是游戏，是给大脑的一次温和训练。每填一个数字，你都在调动逻辑、记忆和专注力。不需要累得满头大汗，只需要每天十五分钟——主动地、专注地、属于你自己地思考一会儿。
That's why we created NaoBan Sudoku. Sudoku isn't a game — it's a gentle workout for your brain. Every number you fill in engages your logic, memory, and concentration. No need to break a sweat — just fifteen minutes a day of active, focused, genuinely your own thinking.
我们为你准备了从少儿到专家的八个难度，特别设计了老年模式——大字体、大按钮、语音提示，不太难也不太易，刚刚好。
We've prepared eight difficulty levels from Kids to Expert, with a specially designed Elder Mode — large fonts, big buttons, voice prompts. Not too hard, not too easy. Just right.
拿起笔。
每天十五分钟，给大脑一个温暖的陪伴。
做自己大脑的主人，从今天开始。
Put down the phone.
Pick up a pen.
Fifteen minutes a day — a warm companion for your mind.
Be the master of your own brain, starting today.