:root{--bg:#f5f4fb;--surface:#fff;--surface-2:#f3f2f9;--border:#e7e4f0;--border-strong:#d6d1e6;--text:#1f2733;--text-muted:#4f5765;--text-faint:#5e6672;--brand:#6d28d9;--brand-2:#9333ea;--brand-grad:linear-gradient(135deg,#7c3aed,#a855f7);--accent:#6d28d9;--accent-bg:#f1e9fc;--accent-border:#e0d0f7;--trust:#1f5e8c;--trust-bg:#eaf2f8;--trust-border:#cfe1ee;--grounded:#1f7a4d;--grounded-bg:#e6f3eb;--refusal:#9c5400;--refusal-bg:#fbf0e0;--degraded:#a13434;--degraded-bg:#f7e9e9;--neutral:#5a6472;--neutral-bg:#eceef2;--radius:12px;--radius-sm:8px;--radius-pill:999px;--shadow-sm:0 1px 2px rgba(30,25,60,.07);--shadow-card:0 3px 14px rgba(60,40,120,.08);--shadow-pop:0 10px 34px rgba(80,50,150,.18);--fs-body:15px;--fs-sm:13.5px;--fs-xs:12px}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:var(--fs-body);line-height:1.5;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}.mono,code{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.92em}textarea::placeholder{color:var(--text-faint);opacity:1}.app{display:flex;flex-direction:column;height:100vh}.topbar{justify-content:space-between;gap:12px;padding:10px 18px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);flex:0 0 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var(--border);border-radius:var(--radius-pill);padding:2px}.lang-opt{border:none;background:none;cursor:pointer;font-size:var(--fs-sm);font-weight:600;color:var(--text-muted);padding:3px 12px;border-radius:var(--radius-pill)}.lang-opt.active{box-shadow:var(--shadow-sm)}.lang-opt.active,.login-btn{background:var(--surface);color:var(--brand)}.login-btn{border:1px solid var(--accent-border);font-weight:600;font-size:var(--fs-sm);border-radius:var(--radius-pill);padding:6px 16px;cursor:pointer}.login-btn:hover{background:var(--accent-bg)}.welcome{min-height:0;background:radial-gradient(120% 80% at 50% 0,rgba(168,85,247,.08) 0,rgba(168,85,247,0) 60%),var(--bg)}.welcome,.welcome-inner{flex:1 1 auto;display:flex;flex-direction:column}.welcome-inner{overflow-y:auto;align-items:center;text-align:center;padding:48px 20px 24px}.welcome-avatar{width:66px;height:66px;border-radius:50%;background:var(--brand-grad);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-pop);margin-bottom:16px}.welcome-greeting{font-size:27px;font-weight:700;letter-spacing:-.02em;margin:0 0 8px}.welcome-intro{font-size:15px;color:var(--text-muted);max-width:560px;margin:0 0 22px;line-height:1.6}.welcome-categories{list-style:none;margin:0 0 24px;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px;width:100%;max-width:560px}.welcome-categories li{display:flex;align-items:center;gap:10px;text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;font-size:var(--fs-sm);font-weight:500;box-shadow:var(--shadow-sm)}.cat-icon{font-size:18px;line-height:1}.welcome-hint{font-size:var(--fs-sm);color:var(--text-faint);margin-bottom:10px}.welcome-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:640px}.welcome-chip{font-size:var(--fs-sm);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-pill);padding:8px 16px;cursor:pointer;color:var(--text);box-shadow:var(--shadow-sm);transition:border-color .12s,background .12s}.welcome-chip:hover{border-color:var(--accent-border);background:var(--accent-bg);color:var(--brand)}.welcome-composer{width:100%;max-width:720px;margin:0 auto;padding:8px 20px 18px}.welcome-composer .composer{border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-card)}.split{display:grid;grid-template-columns:minmax(0,60fr) minmax(0,40fr);flex:1 1 auto;min-height:0}.pane{min-width:0;min-height:0;display:flex;flex-direction:column}.pane.chat{border-right:1px solid var(--border);background:var(--bg)}.pane.sources{background:var(--surface-2)}.pane-head{flex:0 0 auto;display:flex;gap:7px;padding:9px 16px;font-size:var(--fs-xs);letter-spacing:.04em;text-transform:uppercase;color:var(--text-faint);border-bottom:1px solid var(--border);background:var(--surface)}.pane-head,.trust-mark{align-items:center;font-weight:700}.trust-mark{display:inline-flex;justify-content:center;width:15px;height:15px;border-radius:50%;background:var(--trust-bg);color:var(--trust);font-size:10px}.messages{flex:1 1 auto;min-width:0;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{max-width:86%;border:1px solid var(--border);border-radius:var(--radius);padding:10px 13px;background:var(--surface);box-shadow:var(--shadow-sm)}.msg.user{align-self:flex-end;background:var(--accent-bg);border-color:var(--accent-border);border-bottom-right-radius:4px}.msg.assistant{align-self:flex-start;border-bottom-left-radius:4px}.msg.error{background:var(--degraded-bg);border-color:#e6c4c4}.msg.cancelled{background:var(--surface-2);border-style:dashed}.msg .role{display:flex;align-items:center;gap:6px;font-size:var(--fs-xs);font-weight:700;color:var(--text-faint);margin-bottom:5px}.bot-avatar{width:19px;height:19px;border-radius:50%;background:var(--brand-grad);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}.msg .body{white-space:pre-wrap;word-break:break-word}.msg .body a{color:var(--accent);text-decoration:underline}.body.muted{color:var(--text-muted);font-style:italic}.msg .meta{margin-top:8px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}.retry-btn{margin-top:7px;font-size:var(--fs-sm);border:1px solid var(--border-strong);background:var(--surface);border-radius:var(--radius-pill);padding:3px 12px;cursor:pointer;color:var(--text)}.retry-btn:hover{background:var(--surface-2)}.thinking{gap:4px;color:var(--text-muted);font-size:var(--fs-sm)}.chip,.thinking{display:inline-flex}.chip{align-items:center;gap:5px;font-size:var(--fs-xs);font-weight:600;padding:2px 9px;border-radius:var(--radius-pill);border:1px solid transparent}.chip .dot{width:7px;height:7px;border-radius:50%}.chip.grounded{color:var(--grounded);background:var(--grounded-bg)}.chip.grounded .dot{background:var(--grounded)}.chip.refusal{color:var(--refusal);background:var(--refusal-bg)}.chip.refusal .dot{background:var(--refusal)}.chip.degraded{color:var(--degraded);background:var(--degraded-bg)}.chip.degraded .dot{background:var(--degraded)}.chip.conversational,.chip.neutral{color:var(--neutral);background:var(--neutral-bg)}.chip.conversational .dot,.chip.neutral .dot{background:var(--neutral)}.chip.conf-high{color:var(--grounded);background:var(--grounded-bg)}.chip.conf-high .dot{background:var(--grounded)}.chip.conf-medium{color:#8a6300;background:#fbf3da}.chip.conf-medium .dot{background:#c98a00}.chip.conf-low{color:var(--degraded);background:var(--degraded-bg)}.chip.conf-low .dot{background:var(--degraded)}.chip.review{color:var(--refusal);background:var(--refusal-bg)}.chip.review .dot{background:var(--refusal)}.why{font-size:var(--fs-xs)}.why summary{cursor:pointer;color:var(--text-faint);list-style:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.why summary::-webkit-details-marker{display:none}.why summary:before{content:"▸ "}.why[open] summary:before{content:"▾ "}.why summary:hover{color:var(--accent)}.why ul{margin:5px 0 2px;padding:6px 8px;list-style:none;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm)}.why 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var(--border);border-radius:var(--radius-sm);padding:8px;background:var(--surface-2)}.flag-form textarea{width:100%;resize:none;border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:6px 8px;font:inherit;font-size:var(--fs-sm)}.flag-form textarea:focus{outline:none;border-color:var(--accent)}.edit-actions,.flag-actions{display:flex;gap:6px;margin-top:6px}.flag-submit{font-size:var(--fs-sm);border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:var(--radius-pill);padding:4px 13px;cursor:pointer}.flag-submit:disabled{opacity:.5;cursor:not-allowed}.flag-cancel{font-size:var(--fs-sm);border:1px solid var(--border-strong);background:var(--surface);border-radius:var(--radius-pill);padding:4px 13px;cursor:pointer;color:var(--text)}.flag-cancel:hover{background:var(--surface-2)}.edit-link{margin-top:6px;border:none;background:none;padding:0;font-size:var(--fs-xs);color:var(--accent);cursor:pointer}.edit-link:hover{text-decoration:underline}.edit-area{width:100%;resize:none;border:1px solid var(--accent);border-radius:var(--radius-sm);padding:7px 9px;font:inherit;margin-top:3px}.edit-area:focus{outline:none}.composer{flex:0 0 auto;border-top:1px solid var(--border);background:var(--surface);padding:10px 14px 12px}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:9px}.prompt-chip{font-size:var(--fs-xs);border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius-pill);padding:4px 12px;cursor:pointer;color:var(--text-muted)}.prompt-chip:hover{background:var(--accent-bg);color:var(--brand);border-color:var(--accent-border)}.prompt-chip:disabled{opacity:.5;cursor:not-allowed}.composer-row{display:flex;gap:8px;align-items:flex-end}.composer textarea{flex:1 1 auto;resize:none;border:1px solid var(--border-strong);border-radius:var(--radius);padding:9px 11px;font:inherit;color:var(--text);background:var(--surface);max-height:150px}.composer textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.send-btn{flex:0 0 auto;border:none;background:var(--brand-grad);color:#fff;border-radius:var(--radius-pill);padding:9px 20px;font-weight:600;cursor:pointer;box-shadow:var(--shadow-sm)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.stop-btn{flex:0 0 auto;border:1px solid var(--degraded);background:var(--surface);color:var(--degraded);border-radius:var(--radius-pill);padding:9px 18px;font-weight:600;cursor:pointer}.stop-btn:hover{background:var(--degraded-bg)}.input-warn{margin-top:6px;font-size:var(--fs-xs);color:var(--refusal)}.panel-body{flex:1 1 auto;min-width:0;overflow-y:auto;padding:14px 13px 18px}.panel-empty,.panel-note{font-size:var(--fs-sm);color:var(--text-muted);border:1px dashed var(--border-strong);border-radius:var(--radius);padding:14px;background:var(--surface)}.panel-count{font-size:var(--fs-xs);color:var(--text-faint);margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em;font-weight:600}.source-card{border:1px solid var(--border);border-left:3px solid var(--trust);border-radius:var(--radius-sm);background:var(--surface);padding:10px 11px;margin-bottom:10px;box-shadow:var(--shadow-sm)}.src-title-btn{display:flex;width:100%;align-items:baseline;justify-content:space-between;gap:8px;border:none;background:none;padding:0;cursor:pointer;text-align:left;color:inherit}.source-card .title{font-weight:600;font-size:var(--fs-body);margin-bottom:2px;line-height:1.3}.src-caret{color:var(--text-faint);font-size:var(--fs-xs)}.source-card .url{display:block;font-size:var(--fs-xs);color:var(--trust);word-break:break-all;margin:4px 0 6px;text-decoration:none}.source-card .url:hover{text-decoration:underline}.source-card .excerpt{font-size:var(--fs-sm);color:var(--text-muted);border-top:1px solid var(--border);padding-top:7px}.excerpt.clamped{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.source-card .src-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}.tag{font-size:var(--fs-xs);color:var(--text-muted);background:var(--surface-2);border:1px solid var(--border);border-radius:4px;padding:1px 6px}.tag-warn{color:var(--refusal);background:var(--refusal-bg);border-color:#e6d2b5;font-weight:600}.source-card.is-highlighted{outline:2px solid var(--trust);outline-offset:1px}.source-card.variant-unverified{border-left-color:var(--border-strong);border-left-style:dashed;background:var(--surface-2)}.unverified-block{margin-top:14px;padding-top:12px;border-top:1px dashed var(--border-strong)}.unverified-head{color:var(--refusal)}.unverified-note{font-size:var(--fs-xs);color:var(--text-muted);margin:0 0 9px}.route-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:13px 14px;box-shadow:var(--shadow-sm)}.route-card h3{margin:0 0 6px;font-size:var(--fs-body)}.route-card p{margin:0 0 9px;font-size:var(--fs-sm);color:var(--text-muted)}.route-list{margin:0;padding-left:17px;font-size:var(--fs-sm)}.route-list li{margin-bottom:3px}.route-card a,.route-list a{color:var(--trust)}@media (max-width:720px){.split{grid-template-columns:1fr}.pane.sources{display:none}.welcome-categories{grid-template-columns:1fr}}