:root{--ink:#202f37;--muted:#7b888d;--line:#e6e9e8;--green:#216d63;--pale:#eaf3ef;--bg:#f7f8f7;--white:#fff;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-size:14px;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg)}[hidden]{display:none!important}button,input,textarea{font:inherit}button{cursor:pointer;border:0;background:none;color:inherit;touch-action:manipulation}button:disabled{opacity:.45;cursor:wait}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #a9cfc4;outline-offset:3px}input,textarea{color:var(--ink)}input{width:100%;border:1px solid var(--line);border-radius:10px;background:white;padding:12px 14px}input::placeholder,textarea::placeholder{color:#9aa3a5}button{transition:background .15s,box-shadow .15s}a{color:var(--green)}.primary{background:var(--green);color:white;padding:12px 20px;border-radius:10px;font-weight:600}.primary:hover{background:#185d54}.outline-button{border:1px solid var(--line);background:white;padding:10px 14px;border-radius:9px;display:inline-flex;gap:8px;align-items:center;justify-content:center;font-size:13px;white-space:nowrap}.outline-button:hover{background:var(--bg)}.icon-button{display:grid;place-items:center;min-width:36px;height:36px;border-radius:9px;font-size:23px;color:#72827e}.icon-button:hover{background:#e8eeeb}.text-button{color:var(--muted);font-size:12px;padding:8px}.text-button:hover{color:var(--green)}.login-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;flex-direction:column;background:radial-gradient(ellipse at 20% 5%,#e5efe6,transparent 50%),radial-gradient(ellipse at 90% 90%,#e6eeed,transparent 50%),#f6f8f5;padding:40px 24px}.login-card{width:100%;max-width:410px;padding:38px 36px;background:#ffffffed;border:1px solid #ffffff;border-radius:24px;box-shadow:0 12px 60px #23352b08}.brand-mark.large{width:52px;height:52px;margin-bottom:25px}.eyebrow{font-size:11px;letter-spacing:2.3px;color:var(--green);font-weight:700}.login-card h1{font-size:33px;line-height:1.45;letter-spacing:-1px;font-weight:650;margin:14px 0}.login-intro{color:var(--muted);font-size:13px;line-height:1.9;margin:0 0 30px}label{display:block;font-size:12px;font-weight:600;margin:15px 0 9px}.password-row{position:relative}.password-row input{padding-right:56px}.password-row button{position:absolute;right:6px;top:6px}.login-submit{width:100%;display:flex;align-items:center;justify-content:space-between;margin-top:18px}.login-note{font-size:11px;color:var(--muted);text-align:center;margin:24px 0 0}.tiny-lock{margin-right:5px}.login-footer{font-size:11px;color:#8c9891;margin-top:30px;text-align:center}.error{font-size:12px;color:#b54444;min-height:0;line-height:1.6}.error:empty{display:none}.workspace{height:100dvh;display:grid;grid-template-columns:284px minmax(0,1fr);max-width:1700px;margin:auto;background:white}.sidebar{background:#f5f7f5;border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;padding:0 16px}.brand{display:flex;align-items:center;gap:11px;padding:28px 10px 30px}.brand strong{display:block;font-size:20px;letter-spacing:2px}.brand span{display:block;font-size:10px;color:var(--muted);margin-top:3px;letter-spacing:1px}.new-channel{margin-left:auto;font-size:23px}.sidebar-label{display:flex;justify-content:space-between;padding:0 12px;margin:0 0 13px;font-size:11px;color:#81908a;letter-spacing:1px}.sidebar-label span{font-size:10px}.search-wrap{margin:0 6px 18px;display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff8;padding-left:12px;color:var(--muted)}.search-wrap input{border:0;padding:9px 8px;background:none;font-size:12px;min-width:0}.search-wrap span{font-size:23px;line-height:20px}.channel-list{overflow:auto;flex:1}.channel-item{display:flex;width:100%;text-align:left;gap:11px;align-items:flex-start;padding:15px 12px;border-radius:11px;margin:0 0 5px}.channel-item:hover{background:#edf1ed}.channel-item.active{background:#e6eee7}.channel-symbol{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:white;color:#68857a;font-size:18px;flex-shrink:0}.channel-item.active .channel-symbol{background:#d3e3d7;color:#286e58}.channel-info{min-width:0;flex:1}.channel-title{font-weight:600;font-size:13px;display:flex;justify-content:space-between;gap:8px;align-items:center;margin:1px 0 6px}.channel-title>span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.channel-preview{font-size:11px;color:#8a9490;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.5}.count-badge{background:#fff9;border-radius:6px;font-size:10px;color:#6c857a;padding:2px 5px}.add-channel{margin:12px 0 18px;padding:13px;border:1px dashed #d5dfd8;border-radius:9px;color:#768a7e;font-size:12px}.sidebar-bottom{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:15px 4px;gap:4px}.connection{display:flex;align-items:center;gap:7px;font-size:10px;color:#849089}.connection i{height:6px;width:6px;border-radius:50%;background:#a8b2ad}.connection i.online{background:#5a9879}.conversation{display:flex;flex-direction:column;min-height:0;min-width:0;background:#fff}.chat-header{height:89px;flex-shrink:0;display:flex;align-items:center;padding:0 36px;gap:13px;border-bottom:1px solid var(--line)}.channel-avatar{height:39px;width:39px;border-radius:12px;background:#f1f5f0;color:#698571;font-size:21px;display:grid;place-items:center}.chat-heading{flex:1;min-width:0}.chat-heading h2{font-size:16px;font-weight:650;margin:0 0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-heading p{font-size:11px;color:var(--muted);margin:0}.back-button{display:none}.info-bar{display:flex;align-items:center;gap:8px;color:#82948c;font-size:11px;padding:13px 36px;background:#fafcf9;border-bottom:1px solid #f0f3ee;flex-shrink:0}.info-dot{width:5px;height:5px;flex-shrink:0;border-radius:50%;background:#9db29e}.messages{flex:1;overflow-y:auto;overscroll-behavior:contain;padding:24px 36px;scroll-behavior:smooth}.empty-state{max-width:430px;text-align:center;margin:clamp(25px,10vh,110px) auto 30px}.empty-mark{width:65px;height:65px;margin:0 auto 22px;border:1px solid #e3ebe3;border-radius:21px;background:#f7faf6;color:#7b9b82;display:grid;place-items:center;font-size:31px}.empty-state h3{font-size:21px;letter-spacing:-.4px;font-weight:600;margin:0 0 12px}.empty-state p{font-size:12px;color:#93a096;line-height:1.9;margin:0}.suggestions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:26px}.suggestions button{font-size:11px;color:#83927f;padding:9px 12px;border:1px solid #e8eee4;border-radius:8px;background:#fcfdfb}.suggestions button:hover{background:var(--pale)}.day-label{text-align:center;font-size:10px;color:#a1aaa4;margin:9px 0 24px;letter-spacing:.3px}.message{display:flex;gap:10px;margin:0 0 24px;align-items:flex-start}.message.human{flex-direction:row-reverse}.message-avatar{width:30px;height:30px;border-radius:10px;background:#edf2ed;display:grid;place-items:center;font-size:11px;color:#5f7866;flex-shrink:0}.message.human .message-avatar{background:#e9eeed;color:#667b75}.message-content{max-width:min(80%,760px);min-width:0}.message-meta{font-size:10px;color:#8d9a93;margin:0 0 6px;display:flex;gap:8px;align-items:center}.human .message-meta{justify-content:flex-end}.bubble{border:1px solid #e8ede7;border-radius:0 13px 13px 13px;padding:12px 15px;background:#f9fbf7;font-size:13px;line-height:1.85;overflow-wrap:anywhere;white-space:pre-wrap}.human .bubble{border-radius:13px 0 13px 13px;background:#edf5f0;border-color:#e1eee5}.receipt{display:flex;gap:5px;align-items:center;justify-content:flex-end;font-size:10px;color:#97a399;margin-top:7px}.receipt.read,.receipt.done{color:#59866b}.receipt span:first-child{font-size:12px}.attachment{display:block;margin-top:8px;text-decoration:none;color:var(--ink);border-radius:8px;background:#fff9;overflow:hidden;border:1px solid #e3ebe4;white-space:normal}.attachment img{display:block;max-width:100%;max-height:280px;object-fit:contain;margin:auto}.attachment .attachment-name{display:flex;gap:10px;align-items:center;font-size:11px;padding:9px 11px;overflow-wrap:anywhere}.file-icon{font-size:17px;color:#72947b}.load-older{display:block;margin:0 auto 20px;font-size:11px;color:var(--green);padding:8px 15px;border-radius:20px;background:#f1f6f0}.composer{padding:10px 36px 17px;flex-shrink:0;background:white}.compose-box{border:1px solid #dfe7df;border-radius:14px;box-shadow:0 3px 12px #233b2704;overflow:hidden}.compose-box:focus-within{border-color:#a4bfae;box-shadow:0 0 0 3px #edf4ee}.compose-box textarea{display:block;width:100%;resize:none;min-height:74px;max-height:150px;border:0;outline:none;padding:16px 17px 8px;line-height:1.7;font-size:13px;background:transparent}.compose-box textarea:focus-visible{outline:none}.compose-actions{display:flex;align-items:center;justify-content:space-between;padding:8px 12px 11px}.compose-left{display:flex;align-items:center;gap:14px}.attach-button{display:flex;align-items:center;gap:5px;padding:8px 6px;color:#849288;font-size:11px}.keyboard-tip{font-size:10px;color:#b1b9b1}.send-button{font-size:12px;padding:9px 16px;display:flex;gap:16px;align-items:center}.send-button span{font-size:16px}.compose-footer{display:flex;justify-content:space-between;color:#a6afa6;font-size:9px;padding:10px 3px 0;gap:10px}.draft-files{padding:6px 36px;display:flex;gap:8px;flex-wrap:wrap}.draft-file{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:11px;max-width:240px}.draft-file span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.draft-file button{font-size:17px;color:var(--muted)}dialog{width:min(460px,calc(100% - 32px));border:1px solid #e6ece5;border-radius:19px;padding:27px;box-shadow:0 20px 90px #152b2920;color:var(--ink)}dialog::backdrop{background:#142b294a;backdrop-filter:blur(3px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}.dialog-top h2{font-size:18px;margin:0}dialog p{font-size:12px;color:var(--muted);line-height:1.8}dialog pre{white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.8 ui-monospace,monospace;background:#f3f6f1;border:1px solid #e6ebe2;border-radius:10px;padding:16px;margin:20px 0}dialog .small-note{font-size:11px;margin:16px 0 0}.full-width{width:100%;margin-top:14px}dialog hr{border:0;border-top:1px solid var(--line);margin:25px 0 12px}.logout{color:#9a6565}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:10;background:#233e34;color:white;padding:12px 22px;border-radius:12px;font-size:12px;box-shadow:0 5px 20px #0002;max-width:90%;text-align:center}.search-empty{text-align:center;color:var(--muted);font-size:12px;padding:30px 10px}@media(min-width:1400px){.workspace{border-left:1px solid var(--line);border-right:1px solid var(--line)}.chat-header,.info-bar{padding-left:50px;padding-right:50px}.messages{padding:30px 50px}.composer{padding-left:50px;padding-right:50px}}@media(max-width:760px){.workspace{display:block}.sidebar{height:100dvh;padding:0 18px;border:0}.brand{padding:24px 8px 27px}.conversation{display:none;height:100dvh}.workspace.mobile-chat .sidebar{display:none}.workspace.mobile-chat .conversation{display:flex}.back-button{display:grid;min-width:26px;font-size:32px;margin-left:-7px}.chat-header{height:75px;padding:0 18px;gap:9px}.channel-avatar{height:33px;width:33px;font-size:18px}.chat-heading h2{font-size:14px}.chat-heading p{font-size:10px}.chat-header .outline-button{font-size:11px;padding:9px 10px}.chat-header .outline-button>span:first-child{display:none}.info-bar{padding:10px 18px;font-size:10px;line-height:1.6}.messages{padding:20px 16px}.message{gap:7px;margin-bottom:22px}.message-avatar{width:26px;height:26px;border-radius:8px}.message-content{max-width:85%}.bubble{font-size:13px;padding:10px 12px}.composer{padding:7px 12px max(12px,env(safe-area-inset-bottom))}.compose-box{border-radius:13px}.compose-box textarea{font-size:16px;min-height:70px;padding:12px 14px 4px}.keyboard-tip{display:none}.compose-footer{font-size:9px;padding-top:7px}.draft-files{padding:6px 14px}.empty-state{margin:clamp(20px,8vh,70px) auto}.empty-state h3{font-size:20px}.empty-state p{font-size:12px}.login-card{padding:30px 25px}.login-card h1{font-size:30px}input{font-size:16px}.channel-list .channel-item{padding:17px 12px}.sidebar-bottom{padding-bottom:max(18px,env(safe-area-inset-bottom))}.search-wrap input{font-size:14px}}