:root{color:#1c2638;font-synthesis:none;text-rendering:optimizelegibility;--blue:#245bd6;--blue-hover:#1949b6;--blue-tint:#e9f0ff;--muted:#637086;--line:#e4e9f1;--sidebar:#f5f7fb;background:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,PingFang SC,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #749ff6}button{transition:background .15s,color .15s,border-color .15s}button:disabled{cursor:not-allowed;opacity:.5}a{color:var(--blue)}svg{flex-shrink:0}h1,h2,p{margin-top:0}h1{letter-spacing:-.035em}h2{letter-spacing:-.02em;font-size:18px}.muted{color:var(--muted);font-size:14px;line-height:1.75}.eyebrow{color:var(--muted);letter-spacing:.08em;font-size:12px;font-weight:600}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;background:#fff;padding:12px;position:fixed;top:-100px;left:12px}.skip-link:focus{top:12px}.button{color:#33425a;background:#fff;border:1px solid #d8dfeb;border-radius:8px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:11px 16px;font-size:14px;font-weight:600;display:inline-flex}.button:hover:not(:disabled){background:#f1f5fc;border-color:#bbc9df}.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.button.primary:hover:not(:disabled){background:var(--blue-hover);border-color:var(--blue-hover)}.button.danger{color:#fff;background:#bc2933;border-color:#bc2933}.button.small{min-height:36px;padding:7px 11px;font-size:12px}.button.full{width:100%}.danger-text{color:#b42331}.icon-button{width:36px;height:36px;color:var(--muted);background:0 0;border:0;border-radius:7px;justify-content:center;align-items:center;padding:0;display:inline-flex}.icon-button:hover:not(:disabled){color:#24354f;background:#e8edf5}.text-button{color:var(--blue);font-size:inherit;background:0 0;border:0;border-radius:4px;padding:6px;font-weight:600}.text-button:hover{text-decoration:underline}.brand{white-space:nowrap;align-items:center;gap:11px;display:flex}.brand-mark{background:var(--blue);color:#fff;border-radius:11px;place-items:center;width:40px;height:40px;display:grid}.brand strong{letter-spacing:.07em;font-size:20px;line-height:1.35;display:block}.brand small{color:var(--muted);letter-spacing:.11em;margin-top:3px;font-size:10px;display:block}.notice{color:#9f2632;overflow-wrap:anywhere;background:#fff5f5;border:1px solid #f1d3d6;border-radius:8px;align-items:flex-start;gap:8px;margin:12px 0;padding:12px 14px;font-size:13px;line-height:1.65;display:flex}.notice svg{margin-top:2px}.notice span{flex:1}.notice .text-button{color:inherit;flex-shrink:0;padding:0}.notice.success{color:#14704a;background:#f0faf5;border-color:#bbdfce}.busy{color:inherit;justify-content:center;align-items:center;gap:9px;font-size:14px;display:flex}.spin{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.startup{flex-direction:column;justify-content:center;align-items:center;gap:26px;min-height:100dvh;padding:28px;display:flex}.startup p{max-width:420px;color:var(--muted);line-height:1.7}label{margin:20px 0 8px;font-size:13px;font-weight:600;display:block}input,textarea{color:#213149;background:#fff;border:1px solid #cbd4e1;border-radius:8px;width:100%;padding:12px 13px;font-size:14px}input::placeholder,textarea::placeholder{color:var(--muted)}input:disabled,textarea:disabled{background:#f4f6f9}.field-hint{color:var(--muted);margin-top:10px;font-size:12px;line-height:1.7}.password-field{position:relative}.password-field input{padding-right:48px}.password-field .icon-button{position:absolute;top:4px;right:5px}.auth-page{background:#f7f9fc;flex-direction:column;min-height:100dvh;padding:36px max(6vw,24px) 24px;display:flex}.auth-header{justify-content:space-between;align-items:center;display:flex}.invite-label{color:#53627a;align-items:center;gap:7px;font-size:12px;display:flex}.auth-layout{grid-template-columns:1fr 440px;align-items:center;gap:80px;width:100%;max-width:1050px;margin:auto;padding:64px 0;display:grid}.auth-intro .eyebrow{color:var(--blue);margin-bottom:24px}.auth-intro h1{margin-bottom:26px;font-size:clamp(34px,3.5vw,48px);font-weight:650;line-height:1.45}.intro-copy{color:#657188;font-size:16px;line-height:1.95}.intro-note{color:#5d6c81;align-items:center;gap:10px;padding-top:34px;font-size:12px;display:flex}.auth-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:38px;box-shadow:0 12px 40px #29437006}.section-kicker{letter-spacing:.1em;color:var(--blue);margin-bottom:12px;font-size:11px;font-weight:600}.auth-card h2{margin-bottom:10px;font-size:23px}.auth-card>.muted{font-size:13px}.auth-card .button.full{margin-top:24px}.auth-switch{text-align:center;color:var(--muted);margin:20px 0;font-size:13px}.auth-footnote{border-top:1px solid var(--line);color:var(--muted);align-items:flex-start;gap:7px;padding-top:18px;font-size:11px;line-height:1.7;display:flex}.auth-footnote svg{margin-top:3px}.auth-footer{color:var(--muted);justify-content:space-between;align-items:center;font-size:11px;display:flex}.app-shell{height:100dvh;display:flex;overflow:hidden}.sidebar{background:var(--sidebar);border-right:1px solid var(--line);flex-direction:column;flex-shrink:0;width:264px;height:100%;min-height:0;padding:28px 16px 14px;display:flex}.sidebar>.brand{margin-bottom:30px;padding:0 10px}.new-chat{color:#294e8f;background:#fff;border-color:#d9e1ef;justify-content:flex-start;width:100%;padding:12px}.button-hint{color:var(--muted);margin-left:auto;font-size:10px;font-weight:400}.history-heading{color:var(--muted);justify-content:space-between;align-items:center;padding:20px 10px 6px;font-size:11px;font-weight:600;display:flex}.history{flex:1;min-height:0;margin-right:-5px;padding-right:5px;overflow-y:auto}.empty-history{color:var(--muted);padding:14px 12px;font-size:12px;line-height:1.9}.history-item{border-radius:8px;align-items:center;min-width:0;margin:3px 0;display:flex}.history-item:hover{background:#ebeff6}.history-item.selected{background:#e7edf8}.history-select{color:#53627a;text-align:left;background:0 0;border:0;border-radius:7px;flex:1;align-items:center;gap:10px;min-width:0;padding:13px 10px;font-size:12px;display:flex}.history-select span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.selected .history-select{color:#234d93;font-weight:600}.history-delete{opacity:.25;width:30px;height:36px;margin-right:3px}.history-item:hover .history-delete,.history-delete:focus-visible{opacity:1}.sidebar-footer{border-top:1px solid var(--line);margin-top:14px;padding-top:12px}.sidebar-action{color:#52627a;text-align:left;background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;width:100%;padding:11px 10px;font-size:12px;display:flex}.sidebar-action svg:last-child{margin-left:auto}.sidebar-action:hover,.sidebar-action.active{color:var(--blue);background:#e7edf8}.user-row{align-items:center;gap:9px;margin-top:12px;padding:7px 3px;display:flex}.user-avatar{color:#536785;background:#e1e7f0;border-radius:50%;place-items:center;width:33px;height:33px;font-size:12px;font-weight:600;display:grid}.user-meta{flex:1;min-width:0}.user-meta strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;display:block;overflow:hidden}.user-meta small{color:var(--muted);margin-top:4px;font-size:10px;display:block}.user-row .icon-button{width:30px}.workspace{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex}.workspace-header{border-bottom:1px solid #eef1f6;justify-content:space-between;align-items:center;gap:16px;height:80px;min-height:80px;padding:0 34px;display:flex}.current-title{min-width:0}.current-title strong{white-space:nowrap;text-overflow:ellipsis;max-width:min(42vw,550px);font-size:14px;font-weight:600;display:block;overflow:hidden}.current-title span{color:var(--muted);margin-top:5px;font-size:11px;display:block}.quota-chip{color:#62728a;white-space:nowrap;align-items:center;gap:7px;font-size:11px;display:flex}.quota-chip strong{color:#3c4e68}.quota-dot{background:#517bad;border-radius:50%;width:5px;height:5px}.chat-scroll{overscroll-behavior:contain;flex:1;min-height:0;padding:25px 28px;overflow-y:auto}.chat-scroll>.busy{margin:50px auto}.welcome{max-width:680px;margin:0 auto;padding:clamp(36px,7vh,90px) 0 30px}.welcome-mark{color:#2a60ca;background:#f2f6ff;border:1px solid #dae5fb;border-radius:18px;place-items:center;width:64px;height:64px;margin-bottom:34px;display:grid}.welcome .eyebrow{color:var(--muted);letter-spacing:0;margin-bottom:12px;font-size:12px}.welcome h1{margin-bottom:16px;font-size:clamp(28px,3vw,38px);font-weight:600;line-height:1.5}.welcome-subtitle{color:var(--muted);margin-bottom:32px;font-size:14px;line-height:1.95}.suggestions{gap:10px;display:flex}.suggestions button{border:1px solid var(--line);text-align:left;color:#637995;background:#fff;border-radius:9px;flex:1;align-items:center;gap:10px;min-width:0;padding:16px;display:flex}.suggestions button:hover{background:#f6f9ff;border-color:#aec3ec}.suggestions strong{color:#526279;white-space:nowrap;font-size:12px;font-weight:500}.suggestions svg:last-child{width:13px;margin-left:auto}.welcome-note{color:var(--muted);align-items:center;gap:6px;margin-top:26px;font-size:11px;display:flex}.messages{max-width:780px;margin:0 auto;padding-top:14px}.message{align-items:flex-start;gap:15px;min-width:0;margin-bottom:34px;display:flex}.message-avatar{width:30px;height:30px;color:var(--blue);background:#edf3ff;border-radius:8px;flex-shrink:0;place-items:center;font-size:12px;display:grid}.message.user .message-avatar{color:#566a84;background:#eef1f6}.message-body{flex:1;min-width:0;padding-top:5px}.message-label{color:#41526b;margin-bottom:13px;font-size:12px;font-weight:600}.user-content{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.85}.pending{opacity:.72}.message-body .busy{color:#6b7990;justify-content:flex-start}.copy-button{color:var(--muted);background:0 0;border:0;align-items:center;gap:5px;min-height:32px;margin-top:8px;padding:6px 0;font-size:10px;display:inline-flex}.copy-button:hover{color:var(--blue)}.markdown{overflow-wrap:anywhere;font-size:14px;line-height:1.85}.markdown>:first-child{margin-top:0}.markdown>:last-child{margin-bottom:0}.markdown h1{font-size:24px}.markdown h2{font-size:20px}.markdown h3{font-size:17px}.markdown h1,.markdown h2,.markdown h3,.markdown h4{margin:20px 0 10px}.markdown p{margin-bottom:14px}.markdown pre{white-space:pre;border:1px solid var(--line);tab-size:2;background:#f4f6fa;border-radius:9px;max-width:100%;padding:15px;line-height:1.65;overflow-x:auto}.markdown code{background:#f1f4f9;border-radius:4px;padding:2px 4px;font-family:Consolas,SFMono-Regular,monospace;font-size:.88em}.markdown pre code{background:0 0;padding:0}.markdown blockquote{color:#66778f;border-left:3px solid #b5c7e9;margin-left:0;padding-left:16px}.markdown table{border-collapse:collapse;max-width:100%;font-size:13px;display:block;overflow-x:auto}.markdown th,.markdown td{border:1px solid var(--line);padding:9px 12px}.markdown a{text-underline-offset:3px}.markdown hr{border:0;border-top:1px solid var(--line);margin:22px 0}.composer-area{flex-shrink:0;align-self:center;width:100%;max-width:840px;padding:10px 28px 20px}.composer{background:#fff;border:1px solid #cfd9e9;border-radius:14px;padding:14px 14px 10px;box-shadow:0 3px 14px #283f6205}.composer:focus-within{border-color:#86a8e8;box-shadow:0 0 0 2px #edf3ff}.composer textarea{resize:none;background:0 0;border:0;border-radius:0;min-height:60px;max-height:180px;padding:3px 3px 9px;line-height:1.75;display:block}.composer textarea:focus-visible{outline:none}.composer-toolbar{align-items:center;gap:10px;display:flex}.thinking-toggle{color:#64738a;background:#f6f8fb;border:1px solid #e6ebf3;border-radius:7px;align-items:center;gap:6px;min-height:34px;padding:7px 10px;font-size:11px;display:flex}.thinking-toggle:hover{background:#eef3fc}.thinking-toggle.enabled{color:#2459b7;background:#edf3ff;border-color:#b7cdf6}.character-count{color:var(--muted);margin-left:auto;font-size:11px}.send-button{background:var(--blue);color:#fff;border:0;border-radius:9px;place-items:center;width:36px;height:36px;display:grid}.send-button:hover:not(:disabled){background:var(--blue-hover)}.send-button:disabled{color:#71829f;opacity:1;background:#dce4f2}.composer-note{color:var(--muted);justify-content:space-between;gap:12px;margin:11px 3px 0;font-size:10px;line-height:1.6;display:flex}.mobile-menu,.mobile-drawer{display:none}.modal{border:1px solid var(--line);color:#213149;border-radius:14px;width:min(440px,100vw - 32px);max-height:calc(100dvh - 48px);padding:26px;overflow-y:auto;box-shadow:0 20px 80px #12234826}.modal::backdrop,.mobile-drawer::backdrop{background:#1b2c4866}.modal-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.modal-heading h2{margin:0}.modal .button.full{margin-top:24px}.modal-actions{justify-content:flex-end;gap:10px;margin-top:26px;display:flex}.admin-page{flex:1;padding:40px clamp(22px,4vw,56px);overflow-y:auto}.page-title{justify-content:space-between;align-items:center;gap:20px;margin-bottom:30px;display:flex}.page-title h1{margin:0 0 12px;font-size:28px;font-weight:600}.page-title .muted{margin:0}.admin-section{border-top:1px solid var(--line);max-width:1020px;padding:26px 0}.section-heading{justify-content:space-between;align-items:center;gap:14px;display:flex}.heading-icon{align-items:center;gap:9px;margin-bottom:12px;display:flex}.heading-icon svg{color:#5e769c}.heading-icon h2{margin:0;font-size:16px}.section-heading>.muted{font-size:12px}.invite-form{align-items:flex-end;gap:14px;margin-bottom:14px;display:flex}.invite-form label{margin-top:0}.invite-form input{width:140px;height:44px}.invite-result{background:#f1f6ff;border:1px solid #d5e2fa;border-radius:10px;max-width:580px;padding:20px}.invite-result strong{font-size:14px}.invite-result code{overflow-wrap:anywhere;letter-spacing:.04em;padding:13px 0;font-size:16px;display:block}.invite-result p{color:#607694;font-size:12px;line-height:1.7}.table-wrap{overflow-x:auto}.table-wrap table{border-collapse:collapse;text-align:left;width:100%;min-width:570px;font-size:13px}.table-wrap th{color:var(--muted);background:#f7f9fc;font-size:11px;font-weight:500}.table-wrap td,.table-wrap th{border-bottom:1px solid var(--line);padding:13px 14px}.table-wrap td strong{font-size:13px;display:block}.table-wrap td small{color:var(--muted);margin-top:4px;font-size:10px;display:block}.quota-form{align-items:center;gap:8px;display:flex}.quota-form input{width:86px;padding:8px;font-size:12px}.status-pill{color:#327454;background:#eef6f1;border-radius:4px;padding:4px 7px;font-size:11px}.status-pill.inactive{color:#738197;background:#f1f2f5}.row-error{color:#ac2434;max-width:150px;margin-top:8px;font-size:11px;display:block}.empty-inline{color:var(--muted);padding:14px 0;font-size:13px}@media (width>=1500px){.welcome{padding-top:11vh}.sidebar{width:280px}}@media (width<=1100px){.auth-layout{grid-template-columns:1fr 410px;gap:40px}.sidebar{width:244px}.workspace-header{padding:0 24px}.suggestions button{gap:7px;padding:14px 11px}.suggestions svg:last-child{display:none}}@media (width<=760px){.auth-page{padding:25px 20px}.auth-layout{max-width:450px;padding:38px 0;display:block}.auth-intro{display:none}.auth-card{padding:30px 26px}.auth-header .brand strong{font-size:18px}.auth-footer{font-size:10px}.desktop-sidebar{display:none}.mobile-menu{display:flex}.mobile-drawer[open]{border:0;width:min(300px,88vw);max-width:88vw;height:100dvh;max-height:100dvh;margin:0;padding:0;display:block}.mobile-drawer .sidebar{width:100%;padding-top:36px}.drawer-close{position:absolute;top:9px;right:11px}.workspace-header{gap:10px;height:68px;min-height:68px;padding:0 16px 0 10px}.current-title{flex:1}.current-title strong{max-width:44vw;font-size:13px}.current-title span{font-size:10px}.quota-chip{gap:5px;font-size:10px}.quota-dot{display:none}.chat-scroll{padding:22px 20px}.welcome{padding-top:38px}.welcome-mark{width:56px;height:56px;margin-bottom:28px}.welcome h1{font-size:30px}.welcome-subtitle{margin-bottom:26px;font-size:13px}.suggestions{flex-direction:column;gap:9px;max-width:400px}.suggestions button{gap:11px;padding:14px}.suggestions svg:last-child{display:block}.welcome-note{margin-top:22px;font-size:10px}.composer-area{padding:9px 14px max(14px, env(safe-area-inset-bottom))}.composer{border-radius:12px;padding:12px 12px 9px}.composer textarea{min-height:52px;font-size:16px}.composer-note{text-align:center;justify-content:center;margin-top:9px;font-size:9px}.keyboard-hint{display:none}.thinking-toggle{min-height:40px}.send-button{width:40px;height:40px}.message{gap:11px;margin-bottom:28px}.message-avatar{width:27px;height:27px}.markdown,.user-content{font-size:14px}.history-delete{opacity:1}.icon-button{width:40px;height:40px}.user-row .icon-button{width:38px}.admin-page{padding:28px 20px}.page-title{align-items:flex-start;gap:10px}.page-title h1{font-size:22px}.page-title .muted{font-size:12px}.page-title .button{min-width:74px;padding:9px;font-size:12px}.section-heading{align-items:flex-start}.auth-card input,.modal input{font-size:16px}}@media (height<=700px) and (width>=761px){.welcome{padding-top:22px}.welcome-mark,.welcome-subtitle{margin-bottom:22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.composer textarea{field-sizing:content;overflow-y:auto}