:root{--bg:#eff4f5;--panel:#fbfdfd;--paper:#fff;--ink:#20343c;--muted:#60747c;--line:#dde6e8;--accent:#285f5c;--accent-text:#fff;--soft:#e3efec;--blue:#e5eef4;--error:#a6403a;--shadow:0 16px 60px #1b353a20;--bubble:#f0f4f5;--mine:#e0ece8;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;font-size:14px;line-height:1.55}body.dark{--bg:#18252b;--panel:#202e35;--paper:#24343b;--ink:#e5edf0;--muted:#a4b8c2;--line:#35484f;--accent:#9bc7bd;--accent-text:#15302b;--soft:#2e4943;--blue:#2e4352;--error:#f3a69f;--bubble:#2d3e46;--mine:#345249;color-scheme:dark}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer;border:0;background:transparent}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}input,textarea{min-width:0}button svg{width:20px;height:20px}svg{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}i{display:inline-flex;align-items:center}i svg{width:20px;height:20px}h1,h2,h3,p{margin:0}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.samplebar{height:36px;display:flex;align-items:center;gap:18px;justify-content:center;color:var(--muted);font-size:12px;border-bottom:1px solid var(--line);padding:0 14px}.samplebar span:first-child{font-weight:600;color:var(--ink)}.samplebar button{margin-left:auto;font-size:12px;padding:3px 8px}.app{display:grid;grid-template-columns:76px 272px minmax(350px,1fr) 278px;max-width:1700px;margin:auto;height:calc(100dvh - 36px);min-height:650px;background:var(--paper)}.rail{background:var(--bg);display:flex;flex-direction:column;align-items:center;padding:22px 9px 18px;gap:14px;border-right:1px solid var(--line)}.brand{width:43px;height:43px;color:var(--accent);margin-bottom:22px}.brand svg{width:100%;height:100%}.brand circle{fill:currentColor;stroke:none}.railbtn{width:56px;padding:11px 0 8px;display:flex;flex-direction:column;align-items:center;gap:4px;border-radius:12px;color:var(--muted);font-size:11px}.railbtn.active{background:var(--soft);color:var(--accent)}.railbtn:hover{background:var(--soft)}.railbtn i svg{width:22px;height:22px}.railspacer{flex:1}.selfavatar{width:36px;height:36px;border-radius:50%;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-family:SimSun,serif;font-size:18px}.conversations{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}.spacehead{padding:25px 22px 20px;display:flex;align-items:center;justify-content:space-between}.spacehead h1{font-family:"Noto Serif SC",SimSun,serif;font-size:24px;letter-spacing:3px;font-weight:600}.spacehead p{font-size:12px;color:var(--muted);margin-top:4px}.iconbtn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:7px;color:var(--muted);flex-shrink:0;font-size:22px}.iconbtn:hover{background:var(--bg);color:var(--ink)}.search{margin:0 18px;display:flex;align-items:center;gap:7px;padding:8px 9px;background:var(--bg);border-radius:8px;color:var(--muted);min-width:0}.search i svg{width:16px;height:16px}.search input{width:100%;background:none;border:0;outline-offset:5px;font-size:12px}.search kbd{white-space:nowrap;font-family:inherit;font-size:10px;border:1px solid var(--line);padding:0 3px;border-radius:3px}.filters{display:flex;gap:5px;padding:16px 18px 12px}.filters button{padding:4px 11px;border-radius:6px;color:var(--muted);font-size:12px}.filters .selected{background:var(--soft);color:var(--accent);font-weight:600}.chatlist{flex:1;overflow:auto;padding:0 11px}.listlabel{font-size:11px;color:var(--muted);padding:12px 12px 7px;display:flex;align-items:center;gap:5px}.listlabel svg{width:13px;height:13px}.chatitem{display:flex;align-items:center;width:100%;padding:14px 11px;gap:11px;text-align:left;border-radius:10px;margin-bottom:3px}.chatitem:hover{background:var(--bg)}.chatitem.current{background:var(--soft)}.avatar{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:var(--blue);font-family:SimSun,serif;font-size:18px;flex-shrink:0;color:var(--ink)}.avatar.ai{background:var(--soft);color:var(--accent);border-radius:50%}.avatar.group{background:var(--accent);color:var(--accent-text)}.avatar svg{width:25px;height:25px}.avatar.plum{background:#eee6ed;color:#7c586d}.avatar.sand{background:#eee9dd;color:#796649}body.dark .avatar.plum{background:#483742;color:#dfbfd2}body.dark .avatar.sand{background:#473f32;color:#dfcfac}.itemtext{flex:1;min-width:0}.itemtop{display:flex;justify-content:space-between;gap:5px;align-items:center}.itemtop strong{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.itemtop time{font-size:10px;color:var(--muted);flex-shrink:0}.preview{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-top:5px;font-size:11px;color:var(--muted)}.preview>span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.unread{background:var(--accent);color:var(--accent-text);font-size:10px;min-width:17px;height:17px;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.smalltag{display:inline-block;font:10px/1.6 "Microsoft YaHei",sans-serif;padding:0 4px;background:var(--blue);border-radius:3px;color:var(--muted);vertical-align:middle;margin-left:4px}.spacefoot{display:flex;align-items:center;gap:6px;padding:16px 20px;color:var(--muted);font-size:11px;border-top:1px solid var(--line)}.spacefoot button{margin-left:auto;font-size:11px;color:var(--muted);padding:3px 0}.statusdot{width:6px;height:6px;border-radius:50%;background:var(--accent)}.conversation{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--paper)}.chathead{display:flex;align-items:center;gap:12px;min-height:86px;padding:16px 28px;border-bottom:1px solid var(--line)}.chathead .avatar{width:38px;height:38px;border-radius:12px}.headtext{flex:1;min-width:0}.headtext h2{font-size:17px;font-weight:600}.headtext p{font-size:11px;color:var(--muted);margin-top:3px}.headtools{display:flex;gap:6px}.back{display:none}.chatpolicy{min-height:41px;border-bottom:1px solid var(--line);padding:10px 28px;display:flex;align-items:center;gap:7px;color:var(--muted);font-size:11px;background:var(--panel)}.chatpolicy svg{width:14px;height:14px;color:var(--accent)}.chatpolicy button{color:var(--accent);font-size:11px;margin-left:auto}.networknotice{background:var(--blue);color:var(--ink);padding:9px 28px;font-size:12px}.messages{flex:1;overflow:auto;padding:18px 30px 20px;scrollbar-width:thin;min-height:100px}.datedivider{display:flex;align-items:center;justify-content:center;gap:12px;font-size:11px;color:var(--muted);margin:0 0 26px}.datedivider:before,.datedivider:after{content:"";width:32px;height:1px;background:var(--line)}.msg{display:flex;gap:10px;margin-bottom:21px;align-items:flex-start}.msg .avatar{width:32px;height:32px;border-radius:10px;font-size:14px}.msg .avatar.ai{border-radius:50%}.msg .avatar svg{width:20px;height:20px}.msgbody{max-width:min(84%,590px);min-width:0}.msgmeta{display:flex;align-items:center;gap:8px;margin:0 0 6px;color:var(--muted);font-size:10px}.msgmeta strong{font-size:11px;color:var(--ink);font-weight:500}.bubble{background:var(--bubble);padding:11px 15px;border-radius:3px 13px 13px 13px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.8}.msg.mine{flex-direction:row-reverse}.msg.mine .msgbody{margin-left:auto}.msg.mine .msgmeta{justify-content:flex-end}.msg.mine .bubble{background:var(--mine);border-radius:13px 3px 13px 13px}.msg.ai .bubble{background:transparent;border:1px solid var(--line);padding:14px 18px;border-radius:3px 13px 13px 13px}.msgactions{display:flex;gap:10px;margin:5px 0 0;align-items:center}.msgactions button{font-size:10px;color:var(--muted);padding:2px 0}.msgactions button:hover{color:var(--accent)}.msgstate{font-size:10px;color:var(--muted);margin-right:4px}.failed{color:var(--error)!important}.filebubble{display:flex;align-items:center;gap:10px;white-space:normal}.filebubble svg{width:25px;height:25px;color:var(--accent)}.filebubble strong{display:block;font-size:12px}.filebubble small{color:var(--muted);font-size:10px}.inlinequote{border-left:2px solid var(--muted);padding-left:9px;font-size:11px;color:var(--muted);margin-bottom:8px;white-space:normal}.composearea{padding:0 27px 13px;background:var(--paper)}.quickactions{display:flex;align-items:center;gap:9px;padding:10px 0;font-size:10px;color:var(--muted)}.quickactions button{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:3px 9px;color:var(--accent);font-size:11px}.composer{border:1px solid var(--line);border-radius:12px;padding:12px 12px 8px;background:var(--paper)}.composer:focus-within{border-color:var(--accent)}.composer textarea{resize:none;width:100%;border:0;background:none;outline:none;padding:0 3px;font-size:13px;line-height:1.8;max-height:170px;min-height:53px}.composer textarea:focus-visible{outline:none}.composertools{display:flex;gap:8px;align-items:center;margin-top:3px}.toolleft{display:flex;align-items:center;gap:3px}.toolleft .iconbtn{width:28px;height:28px}.toolleft i svg{width:18px;height:18px}.mention{font-size:11px;padding:3px 7px;border-radius:5px;color:var(--accent)}.mention:hover{background:var(--soft)}.keyhint{margin-left:auto;font-size:9px;color:var(--muted);white-space:nowrap}.sendbtn{background:var(--accent);color:var(--accent-text);border-radius:7px;font-size:12px;padding:7px 12px;display:flex;align-items:center;gap:6px;flex-shrink:0}.sendbtn svg{width:14px;height:14px}.composenote{margin-top:7px;text-align:center;color:var(--muted);font-size:10px}.details{background:var(--panel);border-left:1px solid var(--line);padding:24px 22px;overflow:auto}.detailshead{display:flex;align-items:center;justify-content:space-between}.detailshead h3{font-size:13px;font-weight:600}.detailsprofile{text-align:center;padding:20px 0}.detailsprofile .avatar{margin:0 auto 12px;width:56px;height:56px;font-size:25px;border-radius:18px}.detailsprofile h3{font-family:SimSun,serif;font-size:21px;font-weight:600;letter-spacing:2px}.detailsprofile p{font-size:11px;color:var(--muted);margin-top:7px}.detailsection{padding:18px 0;border-top:1px solid var(--line)}.detailsection h4{font-size:11px;font-weight:500;color:var(--muted);margin:0 0 13px}.memberrow{display:flex;align-items:center;gap:9px;padding:5px 0;font-size:12px}.memberrow .avatar{width:28px;height:28px;font-size:12px;border-radius:9px}.memberrow .avatar svg{width:17px;height:17px}.memberrow small{margin-left:auto;color:var(--muted);font-size:10px}.policybox{background:var(--soft);padding:12px;border-radius:9px;font-size:11px}.policybox strong{font-size:12px;font-weight:500;display:flex;gap:6px;align-items:center;color:var(--accent)}.policybox strong svg{width:17px;height:17px}.policybox p{color:var(--muted);font-size:11px;line-height:1.8;margin:7px 0}.policybox button{font-size:10px;padding:3px 0;color:var(--accent)}.policybox select{max-width:100%;width:100%;font-size:11px;border:1px solid var(--line);padding:6px;background:var(--panel);border-radius:5px;color:var(--ink)}.detailfile{display:flex;align-items:center;gap:9px;width:100%;text-align:left;padding:7px 0;font-size:11px}.detailfile i{background:var(--bg);padding:8px;border-radius:8px;color:var(--accent)}.detailfile span{overflow-wrap:anywhere}.detailfile small{display:block;font-size:10px;color:var(--muted)}.detailaction{width:100%;display:flex;gap:8px;text-align:left;align-items:center;padding:9px 0;font-size:11px}.detailaction svg{width:16px;height:16px}.toggleline{display:flex;align-items:center;justify-content:space-between;font-size:11px;gap:10px}.toggleline input{accent-color:var(--accent);width:16px;height:16px}.landscape{margin-top:30px;color:var(--accent);opacity:.28;height:60px;overflow:hidden}.landscape svg{width:100%;height:100%}.empty{padding:30px 15px;color:var(--muted);text-align:center;font-size:12px}.app.no-details{grid-template-columns:76px 272px minmax(350px,1fr)}.app.no-details .details{display:none}.quotebar,.attachment{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted);background:var(--bg);padding:6px 8px;border-radius:5px;margin-bottom:9px}.quotebar span,.attachment span{min-width:0;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.quotebar .iconbtn{width:24px;height:24px}.attachment svg{width:15px;height:15px}dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:16px;max-width:min(480px,calc(100vw - 30px));width:480px;padding:22px;box-shadow:var(--shadow);max-height:85dvh;overflow:auto}dialog::backdrop{background:#132d3855;backdrop-filter:blur(3px)}.dialoghead{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.dialoghead h2{font-size:18px}.dialogcopy{font-size:12px;color:var(--muted);margin:9px 0 18px;line-height:1.8}.dialogfield{display:block;font-size:12px;margin:15px 0 6px}.dialoginput{width:100%;border:1px solid var(--line);background:var(--panel);padding:10px 12px;border-radius:8px;margin-top:6px}.dialogchoice{width:100%;display:flex;align-items:center;gap:12px;border:1px solid var(--line);padding:13px;border-radius:10px;margin:10px 0;text-align:left}.dialogchoice:hover{background:var(--soft)}.dialogchoice strong{display:block;font-size:13px}.dialogchoice small{font-size:11px;color:var(--muted)}.dialogactions{display:flex;gap:9px;justify-content:flex-end;margin-top:20px}.secondarybtn{border:1px solid var(--line);padding:7px 12px;border-radius:7px;font-size:12px}.searchresult{display:block;width:100%;padding:12px 0;text-align:left;border-bottom:1px solid var(--line);font-size:12px}.searchresult strong{display:block;font-size:11px;color:var(--accent)}.searchresult p{color:var(--muted);margin-top:5px;white-space:pre-wrap;overflow-wrap:anywhere}.searchresults{margin-top:14px}.settingsrow{display:flex;align-items:center;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--line);font-size:12px}.settingsrow button{border:1px solid var(--line);border-radius:6px;padding:5px 9px;font-size:11px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:11px 18px;font-size:12px;box-shadow:var(--shadow);border-radius:9px;z-index:9;max-width:90vw}.savedrow{padding:14px 0;border-bottom:1px solid var(--line);font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere}.savedrow small{display:block;color:var(--muted);font-size:10px;margin-bottom:5px}.highlight{outline:2px solid var(--accent);outline-offset:5px;border-radius:10px}.phoneclose{display:none}
.filecaption{margin-bottom:9px}.bubble{font-size:14px}.msgmeta,.msgmeta strong{font-size:11px}.msgactions button,.msgstate{font-size:11px}.preview{font-size:12px}.composer textarea{font-size:14px}
@media(min-width:1500px){.app{grid-template-columns:80px 296px minmax(400px,1fr) 304px}.messages{padding-left:55px;padding-right:55px}.composearea{padding-left:50px;padding-right:50px}.chathead,.chatpolicy{padding-left:50px;padding-right:50px}}
@media(max-width:1180px){.app{grid-template-columns:68px 252px minmax(300px,1fr)}.details{display:none}.app.no-details{grid-template-columns:68px 252px minmax(300px,1fr)}.app.show-details .details{display:block;position:fixed;right:0;top:36px;bottom:0;width:278px;z-index:5;box-shadow:var(--shadow)}.phoneclose{display:inline-flex}.keyhint{display:none}.sendbtn{margin-left:auto}.chathead{padding:16px 22px}.messages{padding-left:22px;padding-right:22px}.composearea{padding-left:20px;padding-right:20px}.chatpolicy{padding-left:22px;padding-right:22px}}
@media(max-width:720px){.samplebar{height:44px;gap:6px;justify-content:space-between;font-size:10px}.samplebar span:nth-child(2){display:none}.app,.app.no-details{height:calc(100dvh - 44px);min-height:480px;grid-template-columns:60px minmax(0,1fr)}.rail{padding:22px 4px 15px;gap:10px}.railbtn{width:50px}.railbtn span{font-size:10px}.brand{width:36px}.conversations{border-right:0}.conversation{display:none}.app.mobile-chat{display:block}.app.mobile-chat .rail,.app.mobile-chat .conversations{display:none}.app.mobile-chat .conversation{height:100%;display:flex}.back{display:inline-flex}.chathead{min-height:74px;gap:8px;padding:12px}.headtext h2{font-size:16px}.headtext p{font-size:10px}.chathead .avatar{width:33px;height:33px}.headtools{gap:0}.chatpolicy{padding:9px 15px;font-size:10px;min-height:39px}.chatpolicy button{font-size:10px}.messages{padding:17px 16px}.msgbody{max-width:85%}.bubble{font-size:14px;padding:10px 13px}.msgmeta{font-size:11px}.msgmeta strong{font-size:12px}.msgactions button,.msgstate{font-size:11px}.composearea{padding:0 12px 10px}.composer textarea{font-size:16px}.composenote{font-size:10px}.app.show-details .details{top:44px;width:min(300px,100vw)}.quickactions{gap:6px}.quickactions span{font-size:10px}.quickactions button{font-size:11px;padding:5px 8px}.iconbtn{width:36px;height:36px}.sendbtn{min-height:36px}.toolleft .iconbtn{width:36px;height:36px}.spacehead{padding:25px 20px}.samplebar button{margin-left:0}.composertools{gap:3px}.mention{padding:4px;font-size:11px}.networknotice{padding:9px 15px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}