:root{--ink:#1f2b24;--soft:#5d6b62;--he:#ffffff;--me:#d5f2c4;--tip:#fff4c9;--green:#2f7d4f;--bg:#e7efe9;--neg:#2f6fb5;--pos:#c2522a}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:20px;line-height:1.65}
.bar{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;max-width:1240px;margin:0 auto;padding:12px 16px}
.tag{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:15px;color:var(--soft)}
.tag b{background:var(--ink);color:#fff;border-radius:6px;padding:1px 9px}
.tag b.o{background:var(--green)}
.links{display:flex;flex-wrap:wrap;gap:10px}
.links a{display:inline-flex;align-items:center;min-height:48px;padding:0 16px;border-radius:999px;border:2px solid var(--ink);color:var(--ink);text-decoration:none;font-size:17px;background:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible,textarea:focus-visible{outline:4px solid #2a6fd6;outline-offset:2px}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px 20px}
.kicker{margin:2px 0 0;font-size:17px;color:var(--green);font-weight:700}
h1{font-size:30px;line-height:1.3;margin:2px 0 6px}
.lead{margin:0 0 14px}

.room{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:20px;align-items:start}
.stage{position:sticky;top:12px;z-index:5;background:#fff;border-radius:18px;padding:12px 16px 14px;box-shadow:0 8px 24px rgba(30,60,40,.12);min-width:0}
.stagehead{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}
.mode{font-weight:700;font-size:18px;padding:2px 12px;border-radius:999px;background:#eef3ef}
.stage[data-mode="pull"] .mode{background:#e3eefb;color:var(--neg)}
.stage[data-mode="push"] .mode{background:#fbe9e1;color:var(--pos)}
.cardbtn{font-size:18px;min-height:48px;padding:6px 14px;border-width:2px;background:#fff8dc;border-color:#d6a925;text-align:center}
.cardbtn.fresh{box-shadow:0 0 0 4px #f6c64a;font-weight:700}
.road{display:block;width:100%;height:auto}
.car{transition:transform .5s ease}
.car.jump{transition:none}
.car.bump{animation:bump .3s ease}
@keyframes bump{0%,100%{translate:0 0}30%{translate:-3px 0}60%{translate:3px 0}}
.lastmove{margin:6px 0 0;font-size:18px;color:var(--soft);min-height:1.65em}
.records{margin-top:6px;border-top:2px dashed #dbe6de;padding-top:6px}
.rec{margin:0;font-size:17px;padding:2px 8px;border-radius:8px}
.rec b{display:inline-block;min-width:4.6em}
.rec.now{background:#f1f6f2}
.rec[data-mode="pull"] b{color:var(--neg)}
.rec[data-mode="push"] b{color:var(--pos)}

.talk{background:#f6faf7;border-radius:18px;box-shadow:0 8px 24px rgba(30,60,40,.12);overflow:hidden;min-width:0}
.talkhead{padding:10px 16px;background:var(--green);color:#fff;font-weight:700;font-size:18px}
.chat{max-height:min(56vh,580px);min-height:220px;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:10px;overscroll-behavior:contain}
.msg{display:flex;gap:8px;align-items:flex-end;max-width:92%}
.msg.me{align-self:flex-end;flex-direction:row-reverse}
.avatar{flex:0 0 40px;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff}
.he .avatar{background:#e08a3c}
.me .avatar{background:#3f7fc1}
.text{background:var(--he);border-radius:16px 16px 16px 4px;padding:8px 14px;box-shadow:0 1px 2px rgba(0,0,0,.08);min-width:0}
.me .text{background:var(--me);border-radius:16px 16px 4px 16px}
.msg.tip,.msg.pic{align-self:stretch;max-width:100%}
.tip .text{flex:1;background:var(--tip);border:2px solid #e3c25a;border-radius:12px;white-space:pre-line}
.tip .text b{display:block;font-size:16px;color:#8a6a00}
.tip.know .text{background:#eaf5ec;border-color:var(--green)}
.tip.know .text b{color:var(--green)}
.pic .text{flex:1;border-radius:12px;border:2px solid #c9d6cd;padding:8px}
.pic .text p{margin:4px 4px 0;font-size:17px;color:var(--soft)}
.pop{animation:pop .3s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.term{font-weight:700;color:var(--green)}

.loop{display:block;width:100%;height:auto;max-width:460px;margin:0 auto}
.loop .node{fill:#fff;stroke:#2f7d4f;stroke-width:2}
.loop .t{font-size:20px;font-weight:700;fill:#1f2b24}
.loop .d{font-size:18.5px;fill:#3d4a42}
.loop .c{font-size:18px;font-weight:700;fill:#c2522a}
.loop .back{font-size:17px;fill:#5d6b62}
.loop .arrow{stroke:#2f7d4f;stroke-width:3;fill:none}

.composer{border-top:2px solid #dbe6de;padding:12px;background:#fff;min-height:76px}
.status{margin:0 0 8px;color:var(--soft);font-size:18px}
.status:empty{display:none}
.replies{display:flex;flex-wrap:wrap;gap:10px}
button{font:inherit;font-size:20px;line-height:1.3;min-height:52px;padding:10px 18px;border-radius:14px;border:3px solid var(--ink);background:#fff;color:var(--ink);cursor:pointer;touch-action:manipulation;text-align:left}
button.primary{background:var(--green);border-color:var(--green);color:#fff;font-weight:700}
button.quiet{border-width:2px;font-size:18px;min-height:48px}
button:disabled{opacity:.45;cursor:default}

.source{margin-top:18px;background:#fff;border-radius:14px;padding:12px 16px;border-left:6px solid var(--green);max-width:900px}
.source h2{font-size:22px;margin:0 0 6px}
.source p{margin:0 0 6px;font-size:18px}

dialog.card{border:0;border-radius:18px;padding:0;width:calc(100% - 24px);max-width:640px;max-height:90vh;overflow:auto;color:var(--ink);box-shadow:0 20px 50px rgba(0,0,0,.3)}
dialog.card::backdrop{background:rgba(20,35,25,.45)}
dialog.card.fallback{position:fixed;top:5vh;left:0;right:0;margin:0 auto;z-index:50}
.cardhead{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--green);color:#fff;padding:8px 12px 8px 16px}
.cardhead h2{margin:0;font-size:22px}
.cardhead button{min-height:48px;font-size:18px;padding:6px 16px;border-width:2px;text-align:center}
.loopbox{padding:12px 12px 0}
.defs{margin:8px 16px;display:grid;grid-template-columns:auto 1fr;gap:6px 12px}
.defs dt{font-weight:700;color:var(--green)}
.defs dd{margin:0}
dialog.card h3{margin:12px 16px 4px;font-size:19px}
.mine{margin:0 16px;padding-left:1.2em;font-size:18px}
.mine li{margin-bottom:4px}
dialog.card .src{margin:10px 16px 16px;font-size:16px;color:var(--soft)}

.after{margin-top:18px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.prefer-box{background:#fff;border-radius:14px;padding:12px 14px;width:100%;max-width:640px}
.prefer-box p{margin:0 0 6px}
.prefer-box textarea{width:100%;font:inherit;font-size:18px;padding:8px;border:2px solid #c9d6cd;border-radius:10px;resize:none}
.prefer-box button{margin-top:8px}
.copied{margin-left:10px;color:var(--green);font-size:18px}
.adult{background:#fff;border-radius:14px;padding:4px 14px;width:100%;max-width:640px;font-size:18px}
.adult summary{min-height:48px;display:flex;align-items:center;cursor:pointer;font-weight:700}
.adult p{margin:0 0 10px}

@media (max-width:900px){
  .room{grid-template-columns:minmax(0,1fr);gap:10px}
  .stage{top:0;padding:6px 10px 8px;border-radius:0 0 14px 14px}
  .stagehead{margin-bottom:2px}
  .lastmove{margin-top:2px;font-size:16px}
  .records{margin-top:2px;padding-top:2px}
  .rec{font-size:15px;padding:0 6px}
  .chat{max-height:32vh;min-height:140px}
  .replies>button{flex:1 1 100%}
  h1{font-size:24px}
  .lead{font-size:18px}
  .defs{grid-template-columns:1fr;gap:0 0}
  .defs dd{margin-bottom:6px}
}
@media (max-width:900px) and (max-height:700px){
  .stage{position:relative}
  .chat{max-height:38vh}
}
@media (max-width:360px){
  body{font-size:19px}
  .wrap{padding:0 8px 16px}
  .bar{padding:10px 8px}
  .stage{padding:6px}
  .mode{font-size:16px;padding:2px 8px}
  .cardbtn{font-size:16px;padding:6px 10px}
  .chat{padding:10px 8px}
  .avatar{flex-basis:32px;width:32px;height:32px;font-size:16px}
  .msg{max-width:100%}
  button{padding:10px 12px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}