🃏 21 点（纯娱乐）Twenty-One Card Game
在线 21 点纸牌小游戏（纯娱乐，不涉及任何下注）：和庄家比谁的点数更接近 21 又不爆，支持要牌、停牌、分牌，可打开基本策略提示学习什么时候该要牌；可选 1、2、6 副牌，记录胜负平和最长连胜。Play twenty-one online purely for fun — no stakes, no betting. Get closer to 21 than the dealer without going over: hit, stand or split, switch on basic-strategy tips to learn when to draw, choose 1, 2 or 6 decks, and track wins, losses, pushes and your best streak.
点「要牌」再拿一张，「停牌」让庄家开牌；起手两张同点数时可以「分牌」变成两手。键盘：H 要牌，S 停牌，P 分牌，N 或 回车 下一局。这是纯娱乐的纸牌小游戏，没有筹码、没有下注。Hit to take a card, Stand to let the dealer play; a starting pair can be split into two hands. Keyboard: H hit, S stand, P split, N or Enter next round. Just a card game for fun — no chips, no betting.
玩法说明与常见问题How to play & FAQ
「21 点（纯娱乐）」怎么玩？How do I play Twenty-One Card Game?
A 算 1 或 11，J、Q、K 算 10，其余按牌面算。你和庄家各拿两张，庄家一张朝下。你可以不断要牌，超过 21 就「爆了」直接输；停牌后庄家翻开暗牌，不到 17 点必须继续要牌，到 17 点（包括软 17）就停。最后谁更接近 21 谁赢，点数相同为平局。起手两张正好 21 点（A 加 10 点牌）最大，胜过其他所有 21 点。Aces count 1 or 11, J/Q/K count 10, others their face value. You and the dealer get two cards each, one of the dealer's face down. Hit as often as you like — over 21 is a bust and loses at once. When you stand, the dealer reveals and must draw to 17, standing on every 17 (soft ones too). Closer to 21 wins; equal totals push. A two-card 21 (an ace and a ten-card) beats any other 21.
这个游戏涉及下注吗？Is there any betting?
没有。这里只有纸牌本身：没有筹码、没有积分兑换，只记录你自己的胜负平和连胜，数据只存在你的浏览器里。No. There are no chips, stakes or prizes — just the card game, with your own win/loss/push tally and streaks kept in your browser.
「软 17」是什么意思？What is a “soft 17”?
含有一张按 11 计算的 A 的 17 点，比如 A+6。再要一张也不会爆，因为 A 可以改回 1。本页的庄家遇到软 17 也会停牌。A 17 that includes an ace counted as 11, such as A+6 — another card can't bust it because the ace can drop back to 1. Here the dealer stands on soft 17.
策略提示是怎么来的？Where do the tips come from?
提示按照庄家停在 17、不能加倍时的「基本策略」表给出，长期来看是最稳妥的打法；打开它可以边玩边学。They follow the standard basic-strategy chart for a dealer who stands on 17 with no doubling — the steadiest long-run play, handy for learning as you go.
「21 点（纯娱乐）」免费吗？需要下载吗？Is Twenty-One Card Game free? Do I need to download anything?
完全免费，无需注册、下载或安装，打开网页就能玩，手机、平板和电脑都支持；游戏完全在你的浏览器本地运行，不会上传任何数据。It is completely free with no sign-up, download or install — just open the page on a phone, tablet or computer. The game runs entirely in your browser and nothing is uploaded.