:root{color:#243b46;font-synthesis:none;--ink:#203c4a;--muted:#7b8b94;--line:#e4ebee;--sea:#3665ad;--wash:#eff4fa;--mint:#8ab6a3;--nav:#f3f6f9;--white:#fff;background:#fbfcfd;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}a{color:var(--sea);text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline-offset:3px;outline:2px solid #5078c5}button{color:inherit}svg{flex-shrink:0}button,input,select{transition:background-color .15s,border-color .15s}.workspace{height:100dvh;display:flex;overflow:hidden}.sidebar{background:var(--nav);border-right:1px solid var(--line);flex-direction:column;flex-shrink:0;width:260px;padding:26px 16px 18px;display:flex}.sidebar-top{justify-content:space-between;align-items:center;padding:0 12px 26px;display:flex}.brand{color:var(--ink);letter-spacing:-.5px;align-items:center;gap:11px;font-size:20px;font-weight:650;display:flex}.brand img{width:36px;height:36px}.brand small{letter-spacing:2px;color:var(--muted);margin-top:3px;font-size:10px;font-weight:500;display:block}.icon-button{color:#7e8d97;background:0 0;border:0;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;padding:0;display:inline-flex}.icon-button:hover,.icon-button.selected{color:var(--sea);background:#e6edf5}.new-chat{background:var(--white);border:1px solid #d7e0e8;border-radius:9px;align-items:center;gap:10px;padding:12px 13px;font-size:12px;font-weight:550;display:flex;box-shadow:0 2px 3px #263b4f03}.new-chat:hover{border-color:#aebfda}.new-chat>span{color:#b2bdc8;margin-left:auto;font-size:15px}.history-search{color:#93a1ad;border:1px solid #0000;border-radius:7px;align-items:center;gap:9px;margin-top:17px;padding:7px 10px;display:flex}.history-search:focus-within{background:#fff;border-color:#ccd9e8}.history-search input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;outline:0;flex:1;font-size:12px}.history-search input::placeholder{color:#98a5b0}.history-search .icon-button{width:18px;height:18px}.history-heading{color:#83919b;justify-content:space-between;align-items:center;margin:26px 12px 10px;font-size:10px;display:flex}.history-heading small{color:#a4aeb8;font-size:10px}.history-list{scrollbar-width:thin;flex:1;overflow:auto}.history-item{text-align:left;color:#8393a0;background:0 0;border:1px solid #0000;border-radius:8px;align-items:flex-start;gap:10px;width:100%;margin-bottom:4px;padding:11px 10px;display:flex}.history-item>svg:first-child{margin-top:2px}.history-item>span{flex:1;min-width:0}.history-item strong{white-space:nowrap;text-overflow:ellipsis;color:#435a69;font-size:12px;font-weight:450;line-height:1.7;display:block;overflow:hidden}.history-item small{color:#93a0aa;margin-top:4px;font-size:10px;display:block}.history-item:hover{background:#eaf0f7}.history-item.chosen{background:#fff;border-color:#dbe5f0;box-shadow:0 3px 8px #203e5c04}.history-item.chosen>svg:first-child{color:var(--sea)}.history-check{color:#9db0a5;margin-top:4px}.empty-history{color:#8d9ba5;padding:5px 12px;font-size:11px;line-height:1.8}.sidebar-bottom{border-top:1px solid var(--line);padding:15px 8px 0}.space-label{color:#8b99a2;align-items:center;gap:8px;padding:4px;font-size:10px;display:flex}.space-label>span{background:var(--mint);border-radius:50%;width:5px;height:5px}.back{color:#637988;align-items:center;gap:9px;padding:14px 4px 0;font-size:11px;display:flex}.back>svg:last-child{color:#a3afb8;margin-left:auto}.main{flex-direction:column;flex:1;min-width:0;display:flex}.topbar{background:#ffffffc7;border-bottom:1px solid #edf1f5;flex-shrink:0;align-items:center;gap:14px;height:72px;padding:0 26px;display:flex}.topbar-title{min-width:0}.topbar-title strong{white-space:nowrap;text-overflow:ellipsis;max-width:min(60vw,600px);font-size:13px;font-weight:550;display:block;overflow:hidden}.topbar-title span{color:#98a4ad;margin-top:4px;font-size:10px;display:block}.topbar-actions{align-items:center;gap:17px;margin-left:auto;display:flex}.header-state{color:#8898a4;white-space:nowrap;align-items:center;gap:6px;font-size:10px;display:flex}.header-state.processing{color:var(--sea)}.conversation-layout{flex:1;min-height:0;display:flex;position:relative}.thread{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex;position:relative}.thread-viewport{scrollbar-width:thin;scroll-behavior:auto;flex:1;min-height:0;overflow:auto}.thread-content{width:min(100% - 72px,780px);margin:0 auto;padding:38px 0 14px}.welcome{max-width:760px;margin:0 auto;padding:clamp(28px,7vh,90px) 0 42px}.welcome-brand{letter-spacing:2px;color:#8598a7;align-items:center;gap:10px;font-size:10px;display:flex}.welcome-brand img{width:25px;height:25px}.welcome h1{letter-spacing:-1px;color:#203f53;margin:22px 0 18px;font-family:PingFang SC,Microsoft YaHei,sans-serif;font-size:clamp(30px,3.2vw,42px);font-weight:550;line-height:1.55}.welcome>p{color:#8797a2;margin:0;font-size:13px;line-height:1.9}.suggestions{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:38px;display:grid}.suggestion-card{text-align:left;background:#fff;border:1px solid #dfe7ef;border-radius:12px;flex-direction:column;align-items:flex-start;gap:15px;min-height:145px;padding:21px 17px 19px;display:flex;position:relative;box-shadow:0 4px 15px #253a4c02}.suggestion-card>svg:first-child{color:#6f8daf}.suggestion-card strong{font-size:12px;font-weight:550;line-height:1.5}.suggestion-card>span{color:#8d9aa5;max-width:165px;font-size:10px;line-height:1.7}.suggestion-card .suggestion-arrow{color:#b8c4d1;position:absolute;bottom:18px;right:14px;transform:rotate(45deg)}.suggestion-card:hover{background:#f8fbff;border-color:#b2c7e2}.mobile-break{display:none}.composer-area{flex-shrink:0;width:min(100% - 48px,820px);margin:0 auto;padding:14px 0 20px}.composer-wrap{position:relative}.composer{background:#fff;border:1px solid #d4dfeb;border-radius:15px;padding:18px 18px 12px;transition:border-color .15s,box-shadow .15s;box-shadow:0 6px 24px #284b7007}.composer:focus-within{border-color:#a9bfdd;box-shadow:0 6px 26px #3865ab0c}.composer-input{resize:none;width:100%;color:var(--ink);background:0 0;border:0;padding:0;font-size:14px;line-height:1.8;overflow:auto;outline:none!important}.composer-input::placeholder{color:#a0adba}.composer-toolbar{align-items:center;gap:12px;margin-top:12px;display:flex}.composer-settings{color:#70899e;background:#f4f7fb;border:0;border-radius:7px;align-items:center;gap:7px;padding:7px 9px;font-size:10px;display:flex}.composer-settings:hover,.composer-settings.selected{color:var(--sea);background:#eaf1fc}.budget-label{color:#9ba7b1;white-space:nowrap;font-size:10px}.send-button{color:#fff;background:#355fa8;border:0;border-radius:9px;place-items:center;width:34px;height:34px;margin-left:auto;display:grid}.send-button:disabled{color:#fff;opacity:1;background:#dce5f0}.send-button:hover:not(:disabled){background:#254d93}.composer-caption{color:#a5afb9;text-align:center;margin:11px 0 0;font-size:9px;line-height:1.6}.scroll-latest{border:1px solid var(--line);width:34px;height:34px;color:var(--sea);z-index:4;background:#fff;border-radius:50%;place-items:center;display:grid;position:absolute;bottom:calc(100% + 14px);left:50%;transform:translate(-50%);box-shadow:0 4px 12px #263f5712}.scroll-latest:disabled{display:none}.scope-panel{z-index:6;background:#fff;border:1px solid #dbe4ed;border-radius:12px;width:min(380px,100%);padding:15px 18px;position:absolute;bottom:calc(100% + 10px);left:0;box-shadow:0 12px 40px #213e6120}.scope-heading{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.scope-heading strong{font-size:12px;font-weight:550}.scope-heading .icon-button{width:25px;height:25px}.workspace-toggle{border-bottom:1px solid #edf1f6;align-items:center;gap:12px;padding:13px 0;display:flex}.workspace-toggle>span{flex:1}.workspace-toggle strong{font-size:11px;font-weight:500;display:block}.workspace-toggle small{color:#94a2ae;margin-top:5px;font-size:9px;line-height:1.7;display:block}.workspace-toggle input{accent-color:#3c6ab4;width:15px;height:15px}.setting-row{color:#6b8294;justify-content:space-between;align-items:center;gap:12px;padding-top:14px;font-size:11px;display:flex}.setting-row select,.setting-row input{color:#3e5970;background:#f7f9fc;border:1px solid #dce5ef;border-radius:6px;max-width:120px;padding:7px;font-size:11px}.setting-row input{width:87px}.scope-panel>p{color:#98a4b0;margin:17px 0 0;font-size:9px;line-height:1.8}.user-message-row{flex-direction:column;align-items:flex-end;gap:6px;margin:10px 0 25px;display:flex}.user-bubble{color:#324e65;background:#edf3fa;border:1px solid #e3ecf6;border-radius:15px 15px 4px;max-width:88%;padding:14px 18px}.user-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.8}.message-actions{align-items:center;gap:2px;display:flex}.message-actions .icon-button{color:#9aa8b4;width:27px;height:27px}.message-actions .icon-button:hover{color:var(--sea)}.user-actions{opacity:0}.user-message-row:hover .user-actions,.user-message-row:focus-within .user-actions{opacity:1}.assistant-message-row{margin:10px 0 35px;position:relative}.assistant-identity{color:#698498;align-items:center;gap:9px;margin-bottom:19px;font-size:11px;font-weight:600;display:flex}.assistant-identity img{width:24px;height:24px}.status-dot{background:#b2c9bc;border-radius:50%;width:4px;height:4px;margin-left:1px}.status-dot.active{background:#5183c9;box-shadow:0 0 0 3px #5183c91a}.plain-text{white-space:pre-wrap}.markdown{color:#344b5e;overflow-wrap:anywhere;font-size:14px;line-height:1.95}.markdown p{margin:0 0 15px}.markdown>p:last-child{margin-bottom:0}.markdown strong{color:#243f55;font-weight:600}.markdown h1,.markdown h2,.markdown h3{margin:26px 0 12px;font-size:16px;font-weight:600;line-height:1.6}.markdown ul,.markdown ol{margin:13px 0 18px;padding-left:22px}.markdown li{margin-bottom:6px;padding-left:3px}.markdown li>p{margin-bottom:7px}.markdown a{color:#3d6bb1;text-underline-offset:3px;text-decoration:underline}.markdown blockquote{color:#7b8da0;background:#f5f8fd;border-left:3px solid #b9cee9;margin:16px 0;padding:4px 16px}.markdown table{border-collapse:collapse;max-width:100%;margin:18px 0;font-size:12px;display:block;overflow:auto}.markdown th,.markdown td{border:1px solid var(--line);text-align:left;min-width:90px;padding:9px 12px}.markdown th{background:#f2f6fa;font-weight:550}.markdown code{background:#edf2f8;border-radius:4px;padding:2px 5px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:12px}.code-block{background:#f8fafc;border:1px solid #dfe7ef;border-radius:9px;margin:18px 0;overflow:hidden}.code-bar{color:#8194a4;background:#eef3f8;justify-content:space-between;align-items:center;padding:9px 13px;font-size:10px;display:flex}.code-bar button{color:#6c8295;background:0 0;border:0;align-items:center;gap:5px;font-size:10px;display:flex}.code-block pre{white-space:pre;margin:0;padding:16px;font-size:12px;line-height:1.8;overflow:auto}.code-block code{background:0 0;border-radius:0;padding:0}.answer-footer{color:#a1adb8;align-items:center;gap:15px;margin-top:17px;font-size:9px;display:flex}.answer-footer>span{margin-left:5px}.answer-placeholder{color:#899dab;align-items:center;gap:8px;font-size:12px;line-height:1.8;display:flex}.tool-card{background:#fafcfe;border:1px solid #e0e8f1;border-radius:10px;margin:0 0 13px;overflow:hidden}.evidence-meta{color:#94a6b6;justify-content:space-between;gap:10px;margin-bottom:10px;font-size:10px;display:flex}.tool-card summary{cursor:pointer;color:#55738e;align-items:center;gap:11px;padding:12px 14px;font-size:12px;list-style:none;display:flex}.tool-card summary::-webkit-details-marker{display:none}.tool-icon{color:#7e9ab6;background:#edf3fa;border-radius:7px;place-items:center;width:27px;height:27px;display:grid}.tool-card summary>span:nth-child(2){flex:1}.tool-card summary small{color:#a0afbe;margin-top:4px;font-size:10px;display:block}.tool-chevron{color:#aebbc8;transition:transform .15s}.tool-card[open] .tool-chevron{transform:rotate(180deg)}.tool-content{color:#698298;border-top:1px solid #e7edf5;padding:14px 17px 17px;font-size:12px;line-height:1.9}.tool-content p{margin:0 0 12px}.tool-query{font-size:10px}.coverage{color:#97a7b6;font-size:11px}.evidence-list{gap:10px;display:grid}.evidence-card{background:#fff;border:1px solid #e3ebf3;border-radius:8px;padding:13px}.evidence-card strong{color:#405f7c;margin-bottom:7px;font-size:12px;font-weight:550;display:block}.evidence-card p{white-space:pre-wrap;margin-bottom:10px;font-size:12px;line-height:1.85}.evidence-card .evidence-reason{color:#98a7b5;font-size:10px}.evidence-card a{align-items:center;gap:6px;font-size:10px;display:inline-flex}.inline-notice{color:#7d94a9;background:#f2f6fb;border:1px solid #e5edf6;border-radius:8px;flex-wrap:wrap;align-items:center;gap:10px;margin:10px 0;padding:10px 14px;font-size:11px;line-height:1.8;display:flex}.inline-notice button{color:#4775b2;background:0 0;border:0;padding:0;font-size:11px}.error-notice{color:#9b835d;background:#fff8ed;border-color:#f1e6d3}.composer-status{color:#8b9daf;font-size:10px}.load-earlier{color:#8a9daf;background:#fff;border:1px solid #e1e8f0;border-radius:7px;margin:0 auto 24px;padding:8px 13px;font-size:10px;display:block}.loading{color:#889aab;justify-content:center;align-items:center;gap:10px;min-height:130px;margin:auto;font-size:12px;display:flex}.login-welcome{max-width:560px;margin:auto;padding:40px}.login-welcome>img{width:44px;height:44px}.login-welcome h1{color:#25445e;margin:25px 0 16px;font-size:28px;font-weight:550}.login-welcome p{color:#8497a7;font-size:13px}.primary-link{color:#fff;background:#3b68ae;border-radius:8px;align-items:center;gap:16px;margin-top:24px;padding:13px 19px;font-size:12px;display:inline-flex}.detail-panel{border-left:1px solid var(--line);scrollbar-width:thin;background:#fff;flex-shrink:0;width:310px;padding:27px 23px 30px;overflow:auto}.detail-heading{justify-content:space-between;align-items:center;padding-bottom:8px;display:flex}.detail-heading span{color:#a1aebb;font-size:9px}.detail-heading h2{color:#415f7b;margin:7px 0;font-size:16px;font-weight:550}.detail-section{border-bottom:1px solid #edf2f6;padding:23px 0}.section-label{color:#a2afba;align-items:center;gap:9px;font-size:11px;display:flex}.section-label b{color:#7e98af;background:#f0f5fa;border-radius:4px;padding:2px 5px;font-size:9px;font-weight:400}.detail-goal{color:#617d94;white-space:pre-wrap;overflow-wrap:anywhere;margin:12px 0 15px;font-size:12px;line-height:1.85}.state-badge{color:#7f9e8f;background:#edf5f1;border-radius:5px;padding:5px 8px;font-size:9px}.detail-section dl{margin:15px 0 0;font-size:11px}.detail-section dl>div{justify-content:space-between;align-items:flex-start;gap:14px;margin-top:11px;display:flex}.detail-section dt{color:#94a4b2}.detail-section dd{color:#59758f;text-align:right;margin:0}.activity-list{margin:16px 0 0;padding:0;list-style:none}.activity-list li{color:#6c859b;align-items:flex-start;gap:10px;padding:8px 0;font-size:11px;display:flex}.activity-mark{color:#8baa9b;background:#f0f6f2;border-radius:50%;flex-shrink:0;place-items:center;width:21px;height:21px;display:grid}.activity-list li small{color:#a6b4bf;margin-top:6px;font-size:9px;display:block}.source-card{background:#fbfdff;border:1px solid #e2ebf3;border-radius:7px;margin-top:12px;padding:11px}.source-card strong{color:#7a92a7;overflow-wrap:anywhere;font-size:11px;font-weight:450;line-height:1.8;display:block}.source-card a{color:#8ca5c0;overflow-wrap:anywhere;justify-content:space-between;align-items:center;margin-top:9px;font-size:9px;display:flex}.detail-muted{color:#9aaebb;margin:14px 0 0;font-size:10px;line-height:1.9}.detail-empty{color:#9aafbe;margin:60px 0;font-size:12px;line-height:1.9}.detail-empty>svg{color:#bccbda}.spinner,.working>svg{animation:1.3s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.nav-toggle,.sidebar-close,.nav-backdrop,.detail-backdrop{display:none}.nav-backdrop,.detail-backdrop{border:0;padding:0}.detail-panel:focus-visible{outline-offset:-3px}@media (width<=1150px){.sidebar{width:225px;padding-left:12px;padding-right:12px}.thread-content{width:calc(100% - 48px)}.suggestions{gap:9px}.suggestion-card{padding:17px 13px}.detail-panel{width:285px;padding:25px 20px}.conversation-layout:has(.detail-panel) .suggestions{grid-template-columns:1fr}.conversation-layout:has(.detail-panel) .suggestion-card{grid-template-columns:20px 1fr;gap:8px 14px;min-height:0;display:grid}.conversation-layout:has(.detail-panel) .suggestion-card>span{grid-column:2;max-width:none}}@media (width<=900px){.detail-panel{z-index:25;width:320px;position:absolute;inset:0 0 0 auto;box-shadow:-10px 0 30px #1e385514}.detail-backdrop{z-index:24;background:#293f5425;display:block;position:absolute;inset:0}.welcome h1{font-size:32px}.suggestions{grid-template-columns:1fr}.suggestion-card{grid-template-columns:20px 1fr;gap:8px 14px;min-height:0;padding:15px 17px;display:grid}.suggestion-card>svg:first-child{grid-row:1/3;margin-top:4px}.suggestion-card>span{grid-column:2;max-width:none}.suggestion-card .suggestion-arrow{bottom:22px}.welcome{padding-top:38px;padding-bottom:25px}.composer-toolbar{gap:8px}.budget-label{font-size:9px}}@media (width<=720px){.sidebar{z-index:40;visibility:hidden;width:280px;position:fixed;inset:0 auto 0 0;transform:translate(-100%);box-shadow:8px 0 25px #253d5720}.nav-open .sidebar{visibility:visible;transform:translate(0)}.sidebar-close,.nav-toggle{display:inline-flex}.nav-open .nav-backdrop{z-index:39;background:#293f5440;display:block;position:fixed;inset:0}.topbar{gap:10px;height:62px;padding:0 15px}.topbar-title strong{max-width:50vw;font-size:12px}.topbar-title span{font-size:9px}.topbar-actions{gap:8px}.header-state{display:none}.thread-content{width:calc(100% - 36px);padding-top:27px}.welcome{padding-top:20px}.welcome h1{margin-top:20px;font-size:31px}.welcome>p{font-size:12px}.welcome-brand{font-size:9px}.suggestions{margin-top:28px}.suggestion-card{border-radius:10px;padding:14px 15px}.suggestion-card strong{font-size:11px}.suggestion-card>span{font-size:9px}.composer-area{width:calc(100% - 24px);padding:10px 0 max(15px,env(safe-area-inset-bottom))}.composer{border-radius:13px;padding:15px 13px 11px}.composer-input{font-size:14px}.composer-settings{gap:5px;padding:6px 7px;font-size:9px}.composer-settings>svg:last-child{display:none}.composer-toolbar{gap:7px}.budget-label{font-size:9px}.composer-caption{padding:0 8px;font-size:8px}.user-text{font-size:13px}.user-bubble{max-width:91%;padding:12px 15px}.user-actions{opacity:1}.assistant-message-row{margin-bottom:30px}.markdown{font-size:13px;line-height:1.9}.assistant-identity{margin-bottom:16px}.tool-card summary{padding:11px}.detail-panel{width:min(340px,90vw);padding:24px}.scope-panel{width:min(380px,100%)}.mobile-break{display:block}.login-welcome{padding:28px}.login-welcome h1{font-size:25px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}