:root{color-scheme:light;--ink:#173f34;--muted:#65766c;--paper:#f5f7f2;--line:#e1e7df}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.55 system-ui,sans-serif}header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;border-bottom:1px solid var(--line);background:#fff}a{color:inherit}button,.button{border:0;background:var(--ink);color:white;padding:12px 16px;border-radius:12px;min-height:44px;font:inherit;cursor:pointer;text-decoration:none}button:disabled{opacity:.45;cursor:default}input,select,textarea{font:inherit;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:10px;max-width:100%;background:white}textarea{resize:vertical}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #bc9a51;outline-offset:3px}h1{font-size:19px;margin:0}h2{font-size:16px}.hint{margin:12px 24px;color:var(--muted);font-size:13px}.workspace{max-width:1200px;margin:18px auto;display:grid;grid-template-columns:310px minmax(0,1fr);border:1px solid var(--line);border-radius:18px;background:white;overflow:hidden;height:min(760px,calc(100dvh - 115px))}aside{overflow-y:auto;padding:14px;border-right:1px solid var(--line)}aside>button{width:100%;margin-bottom:14px}.room{width:100%;text-align:left;background:white;color:var(--ink);border:1px solid var(--line);margin:8px 0;padding:12px}.room.active{background:#edf3e9;border-color:#739181}.room strong,.room small{display:block}.room small{color:var(--muted);margin-top:4px;word-break:break-word}.thread{display:flex;flex-direction:column;min-height:0}.thread-head{padding:16px;border-bottom:1px solid var(--line)}.thread-head p{font-size:12px;color:var(--muted);margin:5px 0;word-break:break-word}.bubbles{padding:16px;background:var(--paper);flex:1;min-height:100px;overflow-y:auto}.bubble{max-width:80%;width:fit-content;margin:10px 0;padding:10px 12px;border-radius:14px;background:white;white-space:pre-wrap;overflow-wrap:anywhere}.bubble.mine{margin-left:auto;background:var(--ink);color:white}.bubble small{display:block;font-size:10px;opacity:.7;margin-top:5px}.bubble img{display:block;max-width:220px;max-height:220px;border-radius:10px;margin:5px 0;object-fit:contain}.bubble a{display:block}.bubble p{margin:0}#notice{margin:0;padding:6px 14px;color:var(--muted);font-size:12px}#composer{display:flex;gap:8px;align-items:flex-end;padding:12px;border-top:1px solid var(--line)}#composer textarea{flex:1;min-width:0;max-height:140px}.pick{cursor:pointer;display:flex;align-items:center;justify-content:center;background:#eaf0e6;border-radius:10px;min-width:44px;min-height:44px}#attachments{display:flex;gap:8px;padding:0 12px}#attachments img{width:64px;height:64px;object-fit:cover;border-radius:8px}#attachments button{background:#eaf0e6;color:var(--ink);padding:5px;font-size:12px}#chat-controls{display:flex;gap:6px;padding:0 12px 12px;flex-wrap:wrap}#chat-controls button,#older{background:#eaf0e6;color:var(--ink);font-size:12px}.management{max-width:1200px;margin:20px auto;padding:16px;background:white;border:1px solid var(--line);border-radius:14px}.management summary{cursor:pointer;font-weight:600}.operation{display:flex;gap:12px;margin:20px 0;flex-wrap:wrap;align-items:end}.operation label{display:flex;flex-direction:column;gap:4px}.guest{max-width:600px;padding:40px 20px;margin:auto}.guest .button{display:inline-block}dialog{max-width:560px;border:0;border-radius:18px;padding:24px;line-height:1.8}dialog::backdrop{background:#0006}dialog form{display:flex;justify-content:flex-end;gap:12px}@media(max-width:720px){header{padding:12px}.workspace{height:calc(100dvh - 70px);grid-template-columns:1fr;margin:0;border:0;border-radius:0}.workspace aside{max-height:180px;border-right:0;border-bottom:1px solid var(--line)}.workspace.chat-open aside{display:none}.thread-head{padding:12px}.bubble{max-width:90%}.management{margin:12px}.hint{margin:12px}.bubbles{padding:12px}#composer{padding:8px}.thread-head h1{font-size:17px}}

.back-list{display:none}@media(max-width:720px){.back-list{display:block;margin-bottom:8px}}