:root{--bg-app:#fff;--surface:#f8f9fb;--surface-2:#f2f4f7;--line:#e8eaed;--line-2:#dcdfe4;--line-3:#cfd3da;--ink:#1b1f27;--ink-2:#525a66;--ink-3:#8a929e;--ink-4:#aeb4bd;--blue:#2c6be5;--blue-press:#1f57c7;--blue-soft:#eaf1fe;--blue-soft-2:#dbe8fd;--blue-line:#c2d8fb;--blue-ink:#1c4fb0;--violet:#6b53e6;--violet-press:#5840cf;--violet-soft:#f0ecfe;--violet-soft-2:#e6dffc;--violet-line:#d8cdfa;--violet-ink:#4f37c2;--amber:#b9791c;--amber-line:#e6b357;--amber-line-2:#edc77f;--amber-soft:#fcf5e8;--amber-soft-2:#f9ecd4;--amber-ink:#8a5a13;--green:#1f8a5b;--green-soft:#e7f5ee;--green-line:#bfe3cf;--radius-s:7px;--radius-m:10px;--radius-l:14px;--radius-xl:18px;--shadow-card:0 1px 2px #141c2e0a, 0 2px 8px #141c2e0a;--shadow-pop:0 12px 36px #141c2e24, 0 2px 8px #141c2e14;--shadow-soft:0 1px 3px #141c2e0f;--font:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--mono:"IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace}*{box-sizing:border-box}html,body{height:100%;font-family:var(--font);color:var(--ink);background:var(--bg-app);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0}#root{height:100%}button,input,select,textarea{font-family:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}h1,h2,h3,h4,h5,h6,p{margin:0}::selection{background:var(--blue-soft-2)}.app{background:var(--bg-app);height:100%;color:var(--ink);isolation:isolate;grid-template-columns:252px minmax(0,1fr) 0;font-size:14px;transition:grid-template-columns .22s;display:grid;position:relative;overflow:hidden}.col{flex-direction:column;height:100%;min-height:0;display:flex}.scroll{scrollbar-width:thin;scrollbar-color:var(--line-3) transparent;overflow-y:auto}.scroll::-webkit-scrollbar{width:9px}.scroll::-webkit-scrollbar-thumb{background:var(--line-3);background-clip:content-box;border:3px solid #0000;border-radius:20px}.scroll::-webkit-scrollbar-thumb:hover{background:var(--ink-4);background-clip:content-box}.scroll::-webkit-scrollbar-track{background:0 0}.tag{border:1px solid var(--line-2);color:var(--ink-2);white-space:nowrap;background:#fff;border-radius:20px;align-items:center;gap:5px;padding:4px 8px;font-size:11px;font-weight:500;line-height:1;display:inline-flex}.tag.green{color:var(--green);background:var(--green-soft);border-color:var(--green-line)}.tag.blue{color:var(--blue-ink);background:var(--blue-soft);border-color:var(--blue-line)}.tag.violet{color:var(--violet-ink);background:var(--violet-soft);border-color:var(--violet-line)}.tag.amber{color:var(--amber-ink);background:var(--amber-soft);border-color:var(--amber-line-2)}.tag-clickable{cursor:pointer}.tag-clickable:hover{opacity:.8}.icon-btn{width:30px;height:30px;color:var(--ink-3);background:0 0;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;transition:background .12s,color .12s;display:inline-flex}.icon-btn:hover{background:var(--surface-2);color:var(--ink)}.muted{color:var(--ink-3)}.mono{font-family:var(--mono);font-feature-settings:"tnum" 1}.sb{background:var(--surface);border-right:1px solid var(--line)}.sb-head{flex-shrink:0;align-items:center;gap:10px;padding:16px 16px 12px;display:flex}.brand-mark{background:linear-gradient(150deg, var(--blue) 0%, #4f86f0 100%);color:#fff;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;display:flex;box-shadow:0 2px 6px #2c6be547}.brand-name{letter-spacing:.2px;font-size:15px;font-weight:700}.brand-sub{color:var(--ink-3);margin-top:1px;font-size:11px}.sb-new{border-radius:var(--radius-m);border:1px solid var(--blue-line);color:var(--blue-ink);background:#fff;flex-shrink:0;align-items:center;gap:8px;margin:4px 12px 10px;padding:9px 12px;font-size:13px;font-weight:500;transition:background .12s,border-color .12s;display:flex}.sb-new:hover{background:var(--blue-soft)}.sb-search-wrap{flex-shrink:0;margin:2px 12px 4px;position:relative}.sb-search-icon{color:var(--ink-4);pointer-events:none;position:absolute;top:50%;left:11px;transform:translateY(-50%)}.sb-search{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:9px;outline:none;padding:8px 10px 8px 32px;font-size:12.5px;transition:border-color .14s,box-shadow .14s}.sb-search:focus{border-color:var(--blue-line);box-shadow:0 0 0 3px var(--blue-soft)}.sb-section{letter-spacing:.6px;color:var(--ink-3);text-transform:uppercase;flex-shrink:0;padding:14px 18px 6px;font-size:11px;font-weight:600}.sb-list{flex-direction:column;flex:1;gap:1px;min-height:0;padding:0 8px 8px;display:flex;overflow-y:auto}.sb-item{cursor:pointer;border-radius:8px;flex-shrink:0;align-items:center;gap:6px;padding:9px 10px 9px 14px;transition:background .1s;display:flex;position:relative}.sb-item:hover{background:var(--surface-2)}.sb-item.active{background:var(--blue-soft);box-shadow:inset 0 0 0 1px var(--blue-line)}.sb-item.active:before{content:"";background:var(--blue);border-radius:2px;width:3px;position:absolute;top:9px;bottom:9px;left:4px}.sb-item.active .t1{color:var(--blue-ink);font-weight:600}.sb-item.active .t2{color:var(--blue-ink);opacity:.7}.sb-item-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.sb-item .t1{color:var(--ink);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.sb-item .t2{color:var(--ink-3);white-space:nowrap;text-overflow:ellipsis;align-items:center;gap:5px;font-size:11px;display:flex;overflow:hidden}.sb-del-btn{cursor:pointer;width:24px;height:24px;color:var(--ink-3);background:0 0;border:none;border-radius:5px;flex-shrink:0;justify-content:center;align-items:center;transition:background .1s,color .1s;display:flex}.sb-del-btn:hover{background:var(--red-soft,#fee2e2);color:var(--red,#ef4444)}.dot-mode{border-radius:50%;flex-shrink:0;width:6px;height:6px;display:inline-block}.dot-mode.rag{background:var(--blue)}.dot-mode.cot{background:var(--violet)}.sb-empty{text-align:center;color:var(--ink-4);padding:24px 16px;font-size:12.5px;line-height:1.6}.sb-foot{border-top:1px solid var(--line);flex-shrink:0;align-items:center;gap:10px;margin-top:auto;padding:12px;display:flex}.avatar{background:linear-gradient(150deg, #3a7bd5, var(--blue));color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:13px;font-weight:600;display:flex;box-shadow:inset 0 0 0 1px #ffffff40}.u-name{font-size:13px;font-weight:600}.u-role{color:var(--ink-3);font-size:11px}.chat{background:var(--bg-app);position:relative;overflow:hidden}.chat-top{border-bottom:1px solid var(--line);flex-shrink:0;align-items:center;gap:10px;height:56px;padding:0 16px 0 20px;display:flex}.chat-conv{flex:1;align-items:center;gap:11px;min-width:0;display:flex}.conv-ico{background:var(--surface-2);border:1px solid var(--line);width:32px;height:32px;color:var(--ink-2);border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.chat-title{white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.chat-sub{color:var(--ink-3);margin-top:1px;font-size:11.5px}.meta-btn{color:var(--ink-2);border:1px solid var(--line-2);white-space:nowrap;background:#fff;border-radius:8px;align-items:center;gap:6px;padding:5px 10px;font-size:12px;transition:background .12s,color .12s;display:inline-flex}.meta-btn:hover{background:var(--surface);color:var(--ink)}.chat-scroll{flex:1;min-height:0}.thread{flex-direction:column;gap:30px;max-width:880px;margin:0 auto;padding:20px 20px 30px;display:flex}.turn{flex-direction:column;gap:16px;scroll-margin-top:16px;display:flex}.msg{gap:12px;display:flex}.msg .who{flex-shrink:0;width:30px}.msg-av{border-radius:8px;justify-content:center;align-items:center;width:30px;height:30px;font-size:12px;font-weight:600;display:flex}.msg-av.user{background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line-2)}.msg-av.ai{color:#fff}.msg-av.ai.rag{background:linear-gradient(150deg, var(--blue), #4f86f0)}.msg-av.ai.cot{background:linear-gradient(150deg, var(--violet), #8a74f0)}.msg-av.ai.followup{background:linear-gradient(150deg, var(--green), #3ba776)}.msg .body{flex:1;min-width:0;padding-top:3px}.msg .name{color:var(--ink-2);align-items:center;gap:8px;margin-bottom:6px;font-size:12px;font-weight:600;display:flex}.msg .name .stamp{color:var(--ink-4);font-weight:400}.bubble-user{background:var(--surface);border:1px solid var(--line);color:var(--ink);word-break:break-word;border-radius:4px 14px 14px;max-width:100%;padding:11px 14px;font-size:14.5px;display:inline-block}.answer{color:var(--ink);word-break:break-word;white-space:pre-wrap;font-size:14.5px;line-height:1.72}.answer-plain{font-family:var(--mono);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);white-space:pre-wrap;word-break:break-word;padding:12px 14px;font-size:13px;overflow-x:auto}.caret{background:var(--blue);vertical-align:text-bottom;border-radius:1px;width:7px;height:16px;margin-left:2px;animation:1s steps(2,end) infinite blink;display:inline-block}.app[data-mode=cot] .caret{background:var(--violet)}.app[data-mode=followup] .caret{background:var(--green)}@keyframes blink{50%{opacity:0}}.answer-meta{border-top:1px dashed var(--line-2);flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px;padding-top:12px;display:flex}.think{border:1px solid var(--amber-line-2);border-radius:var(--radius-m);background:var(--amber-soft);margin:4px 0 14px;overflow:hidden}.think-head{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:10px;padding:11px 14px;display:flex}.think-head .ttl{color:var(--amber-ink);flex:1;align-items:center;gap:8px;font-size:13px;font-weight:600;display:flex}.think-head .meta{color:var(--amber);font-size:11px}.think-chev{color:var(--amber);transition:transform .2s}.think.open .think-chev{transform:rotate(90deg)}.think-body{grid-template-rows:0fr;transition:grid-template-rows .28s;display:grid}.think.open .think-body{grid-template-rows:1fr}.think-body-inner{min-height:0;overflow:hidden}.think-text{color:var(--ink-2);white-space:pre-wrap;word-break:break-word;border-top:1px solid var(--amber-line-2);padding:10px 18px 16px;font-size:13px;line-height:1.8}.cot-foot{color:var(--violet-ink);background:var(--violet-soft);border:1px solid var(--violet-line);border-radius:9px;align-items:flex-start;gap:9px;margin-top:12px;padding:9px 12px;font-size:12px;line-height:1.5;display:flex}.error-banner{border-radius:var(--radius-m);color:#9c2323;background:#fff0f0;border:1px solid #f0b8b8;margin-top:8px;padding:10px 13px;font-size:13px;line-height:1.5}.chat-empty{text-align:center;color:var(--ink-3);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:16px;padding:40px;display:flex}.chat-empty-icon{background:var(--blue-soft);width:48px;height:48px;color:var(--blue);border-radius:14px;justify-content:center;align-items:center;display:flex}.chat-empty h3{color:var(--ink-2);font-size:16px;font-weight:600}.chat-empty p{max-width:340px;font-size:13px;line-height:1.6}.example-row{flex-wrap:wrap;gap:6px;margin-bottom:6px;display:flex}.example-btn{border:1px solid var(--blue-line);background:var(--blue-soft);color:var(--blue-ink);border-radius:20px;padding:5px 11px;font-size:12px;font-weight:500;transition:background .12s,border-color .12s}.example-btn:hover{background:var(--blue-soft-2)}.copy-toast{color:#fff;pointer-events:none;white-space:nowrap;opacity:0;z-index:20;background:#141c2ee0;border-radius:20px;padding:9px 18px;font-size:13px;font-weight:500;transition:opacity .18s,transform .18s;position:absolute;bottom:96px;left:50%;transform:translate(-50%)translateY(6px)}.copy-toast.visible{opacity:1;transform:translate(-50%)translateY(0)}.composer-wrap{border-top:1px solid var(--line);background:linear-gradient(#fff, var(--bg-app));flex-shrink:0;padding:10px 16px 16px}.cot-notice{max-width:720px;color:var(--violet-ink);background:var(--violet-soft);border:1px solid var(--violet-line);border-radius:9px;align-items:flex-start;gap:9px;margin:0 auto 10px;padding:9px 12px;font-size:12px;line-height:1.5;display:flex}.composer{border:1px solid var(--line-2);border-radius:var(--radius-l);max-width:880px;box-shadow:var(--shadow-card);background:#fff;margin:0 auto;transition:border-color .15s,box-shadow .15s}.composer:focus-within{border-color:var(--blue-line);box-shadow:0 0 0 3px var(--blue-soft)}.app[data-mode=cot] .composer:focus-within{border-color:var(--violet-line);box-shadow:0 0 0 3px var(--violet-soft)}.app[data-mode=followup] .composer:focus-within{border-color:var(--green-line);box-shadow:0 0 0 3px var(--green-soft)}.composer-input{resize:none;width:100%;color:var(--ink);background:0 0;border:none;outline:none;max-height:140px;padding:13px 15px 4px;font-size:14.5px;line-height:1.6;display:block}.composer-input::placeholder{color:var(--ink-4)}.composer-bar{align-items:center;gap:8px;padding:6px 8px 8px 12px;display:flex}.composer-bar .left{flex:1;align-items:center;gap:10px;display:flex}.mode-label{color:var(--ink-3);white-space:nowrap;font-size:11.5px}.rag-toggle{color:var(--ink-3);cursor:pointer;-webkit-user-select:none;user-select:none;white-space:nowrap;border:1px solid var(--line);background:var(--surface-2);border-radius:8px;align-items:center;gap:6px;padding:5px 8px 5px 6px;font-size:12.5px;font-weight:500;transition:border-color .14s,color .14s,background .14s;display:inline-flex}.rag-toggle:has(input:checked){color:var(--blue-ink);border-color:var(--blue-line);background:var(--blue-soft)}.rag-toggle input{accent-color:var(--blue);cursor:pointer}.composer-select{appearance:none;border:1px solid var(--line);background:var(--surface-2);color:var(--ink-2);cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='none' stroke='%238a929e' stroke-width='1.6'%3E%3Cpath d='M2 4l3 3 3-3'/%3E%3C/svg%3E");background-position:right 8px center;background-repeat:no-repeat;border-radius:8px;outline:none;padding:5px 24px 5px 9px;font-size:12.5px;transition:border-color .14s}.composer-select:focus,.composer-select:hover{border-color:var(--blue-line)}.seg{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;gap:2px;padding:3px;display:inline-flex}.seg-btn{color:var(--ink-2);white-space:nowrap;background:0 0;border:none;border-radius:7px;align-items:center;gap:7px;padding:6px 13px;font-size:12.5px;font-weight:500;transition:color .14s;display:inline-flex}.seg-btn .led{background:var(--ink-4);border-radius:50%;width:7px;height:7px;transition:background .14s}.seg-btn:hover{color:var(--ink)}.seg-btn.on{color:var(--ink);box-shadow:var(--shadow-soft), 0 0 0 1px var(--line-2);background:#fff}.seg-btn.on.rag{color:var(--blue-ink)}.seg-btn.on.rag .led{background:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.seg-btn.on.cot{color:var(--violet-ink)}.seg-btn.on.cot .led{background:var(--violet);box-shadow:0 0 0 3px var(--violet-soft)}.seg-btn.on.followup{color:var(--green)}.seg-btn.on.followup .led{background:var(--green);box-shadow:0 0 0 3px var(--green-soft)}.send-btn{color:#fff;background:var(--blue);border:none;border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;transition:background .14s,transform 60ms;display:inline-flex}.send-btn:hover:not(:disabled){background:var(--blue-press)}.send-btn:active:not(:disabled){transform:scale(.94)}.send-btn:disabled{background:var(--line-3)}.app[data-mode=cot] .send-btn{background:var(--violet)}.app[data-mode=cot] .send-btn:hover:not(:disabled){background:var(--violet-press)}.app[data-mode=followup] .send-btn{background:var(--green)}.app[data-mode=followup] .send-btn:hover:not(:disabled){background:#1a7350}.panel{background:var(--surface);border-left:1px solid var(--line)}.panel-top{border-bottom:1px solid var(--line);flex-shrink:0;align-items:center;gap:10px;height:56px;padding:0 18px;display:flex}.panel-top .pt-ttl{flex:1;align-items:center;gap:8px;font-size:14px;font-weight:600;display:flex}.count{font-family:var(--mono);white-space:nowrap;border-radius:20px;padding:2px 7px;font-size:11px;font-weight:600}.count.blue{color:var(--blue-ink);background:var(--blue-soft)}.count.violet{color:var(--violet-ink);background:var(--violet-soft)}.panel-scroll{flex-direction:column;flex:1;gap:12px;min-height:0;padding:14px;display:flex;overflow-y:auto}.panel-scroll>*{flex-shrink:0}.panel-hint{color:var(--ink-3);padding:0 2px 2px;font-size:11.5px;line-height:1.5}.panel-empty{text-align:center;color:var(--ink-3);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:40px 20px;display:flex}.panel-empty-icon{background:var(--blue-soft);width:44px;height:44px;color:var(--blue);border-radius:12px;justify-content:center;align-items:center;display:flex}.panel-empty p{max-width:260px;font-size:12.5px;line-height:1.6}.ref{border:1px solid var(--line);border-radius:var(--radius-m);box-shadow:var(--shadow-card);background:#fff;transition:box-shadow .16s,border-color .16s;overflow:hidden}.ref:hover{box-shadow:var(--shadow-pop);border-color:var(--line-2)}.ref-head{gap:10px;padding:12px 13px 9px;display:flex}.ref-num{background:var(--blue-soft);border:1px solid var(--blue-line);width:26px;height:26px;font-family:var(--mono);color:var(--blue-ink);border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;font-size:11px;font-weight:700;display:flex}.ref-h-main{flex:1;min-width:0}.ref-title{color:var(--ink);word-break:break-word;font-size:13px;font-weight:600;line-height:1.4}.ref-sub{color:var(--ink-3);font-size:11px;font-family:var(--mono);text-overflow:ellipsis;white-space:nowrap;margin-top:3px;overflow:hidden}.ref-snippet{color:var(--ink-2);background:var(--surface);border:1px solid var(--line);word-break:break-word;border-radius:8px;margin:2px 13px 0;padding:9px 11px;font-size:12.5px;line-height:1.6}.ref-foot{flex-wrap:wrap;align-items:center;gap:8px;padding:10px 13px 12px;display:flex}.ref-foot .spacer{flex:1}.trace-text{color:var(--ink-2);border:1px solid var(--violet-line);border-radius:var(--radius-m);white-space:pre-wrap;word-break:break-word;background:#fff;padding:13px 14px;font-size:13px;line-height:1.72}.trace-streaming{color:var(--ink-3);align-items:center;gap:10px;padding:14px;font-size:13px;display:flex}.trace-disclaimer{background:var(--violet-soft);border:1px solid var(--violet-line);border-radius:10px;align-items:flex-start;gap:9px;margin-top:4px;padding:11px 13px;display:flex}.trace-disclaimer p{color:var(--violet-ink);font-size:12px;line-height:1.55}.scrim{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:40;background:#141c2e52;justify-content:center;align-items:flex-start;padding:28px;animation:.18s fade;display:flex;position:absolute;inset:0}@keyframes fade{0%{opacity:0}}.sheet{background:var(--bg-app);border-radius:var(--radius-xl);width:100%;max-width:880px;max-height:calc(100vh - 56px);box-shadow:var(--shadow-pop);border:1px solid var(--line);flex-direction:column;animation:.22s cubic-bezier(.2,.8,.3,1) rise;display:flex;overflow:hidden}@keyframes rise{0%{opacity:0;transform:translateY(10px)scale(.99)}}.sheet-top{border-bottom:1px solid var(--line);flex-shrink:0;align-items:center;gap:12px;padding:18px 22px;display:flex}.sheet-top .st-ttl{flex:1;font-size:16px;font-weight:700}.sheet-top .st-sub{color:var(--ink-3);margin-top:2px;font-size:12px;font-weight:400}.sheet-body{flex:1;grid-template-columns:1fr 1fr;gap:16px;padding:20px 22px 24px;display:grid;overflow-y:auto}.set-card{border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-card);background:#fff;padding:16px 17px}.set-card.full{grid-column:1/-1}.set-card .sc-h{align-items:center;gap:9px;margin-bottom:4px;display:flex}.set-card 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