.kc-v4{--lab-bg: var(--kc-bone, #F5F1EA);--lab-surface: #FBF9F4;--lab-surface-2: var(--kc-bone-shade, #EFE9DF);--lab-surface-3: var(--kc-bone-deep, #E4DCCD);--lab-ink: var(--kc-ink, #1A1A1A);--lab-ink-soft: #2F2D2A;--lab-stone: var(--kc-stone, #7A736A);--lab-stone-faint: color-mix(in srgb, var(--lab-stone) 55%, transparent);--lab-line: var(--kc-line, #DAD3C6);--lab-line-soft: color-mix(in srgb, var(--lab-line) 60%, transparent);--lab-line-strong: color-mix(in srgb, var(--lab-ink) 14%, transparent);--lab-gold: var(--kc-gold, #8a6d3b);--lab-gold-strong: var(--kc-gold-strong, #6f572f);--lab-gold-tint: color-mix(in srgb, var(--lab-gold) 12%, transparent);--lab-gold-tint-2: color-mix(in srgb, var(--lab-gold) 7%, transparent);--lab-gold-line: color-mix(in srgb, var(--lab-gold) 38%, transparent);--lab-focus: color-mix(in srgb, var(--lab-gold) 45%, transparent);--lab-on-ink: var(--kc-bone, #F5F1EA);--lab-on-ink-soft: color-mix(in srgb, var(--lab-on-ink) 62%, transparent);--lab-scrim: rgba(20, 18, 12, .42);--lab-elev-1: 0 1px 2px rgba(26, 22, 14, .05);--lab-elev-2: 0 2px 6px rgba(26, 22, 14, .06), 0 1px 2px rgba(26, 22, 14, .05);--lab-elev-3: 0 8px 24px rgba(26, 22, 14, .1), 0 2px 6px rgba(26, 22, 14, .06);--lab-elev-pop: 0 14px 40px rgba(26, 22, 14, .14), 0 4px 12px rgba(26, 22, 14, .08);--lab-r-xs: 6px;--lab-r-sm: 9px;--lab-r-md: 13px;--lab-r-lg: 18px;--lab-r-pill: 999px;--lab-s-1: 4px;--lab-s-2: 8px;--lab-s-3: 12px;--lab-s-4: 16px;--lab-s-5: 20px;--lab-s-6: 24px;--lab-s-7: 32px;--lab-s-8: 44px;--lab-font-display: var(--kc-font-display, "Fraunces", Georgia, serif);--lab-font-body: var(--kc-font-body, "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);--lab-font-mono: var(--kc-font-mono, "JetBrains Mono", "SF Mono", Menlo, monospace);--lab-fs-body: 16px;--lab-line-h: 1.68;--lab-measure: 46rem;--lab-ease: cubic-bezier(.32, .72, 0, 1);--lab-ease-soft: cubic-bezier(.4, 0, .2, 1);--lab-dur-1: .12s;--lab-dur-2: .18s;--lab-dur-3: .22s;--lab-bar-h: 60px;--lab-gutter: clamp(16px, 4vw, 40px);background:var(--lab-bg);color:var(--lab-ink);display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;position:relative;font-family:var(--lab-font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.kc-section--lab-v4{background:var(--lab-bg, #F5F1EA)}:root[data-theme=dark] .kc-v4{--lab-bg: #14120D;--lab-surface: #1C1A14;--lab-surface-2: #232017;--lab-surface-3: #2B271D;--lab-ink: #F3EEE4;--lab-ink-soft: #E4DDCF;--lab-stone: #A89F92;--lab-stone-faint: color-mix(in srgb, var(--lab-stone) 55%, transparent);--lab-line: rgba(168, 159, 146, .2);--lab-line-soft: rgba(168, 159, 146, .12);--lab-line-strong: rgba(243, 238, 228, .16);--lab-gold: #b08d4e;--lab-gold-strong: #c79f5a;--lab-gold-tint: rgba(176, 141, 78, .16);--lab-gold-tint-2: rgba(176, 141, 78, .09);--lab-gold-line: rgba(176, 141, 78, .42);--lab-focus: rgba(176, 141, 78, .55);--lab-on-ink: #14120D;--lab-on-ink-soft: rgba(20, 18, 13, .66);--lab-scrim: rgba(0, 0, 0, .58);--lab-elev-1: 0 1px 2px rgba(0, 0, 0, .4);--lab-elev-2: 0 2px 8px rgba(0, 0, 0, .45), 0 1px 2px rgba(0, 0, 0, .4);--lab-elev-3: 0 10px 28px rgba(0, 0, 0, .55), 0 2px 8px rgba(0, 0, 0, .4);--lab-elev-pop: 0 16px 44px rgba(0, 0, 0, .6), 0 4px 14px rgba(0, 0, 0, .45)}.kc-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.kc-v4 :focus-visible{outline:2px solid var(--lab-gold);outline-offset:2px;border-radius:var(--lab-r-xs)}.kc-v4 :focus:not(:focus-visible){outline:none}.kc-v4__skip{position:absolute;left:var(--lab-s-3);top:var(--lab-s-2);z-index:600;background:var(--lab-ink);color:var(--lab-on-ink);font-family:var(--lab-font-mono);font-size:12px;letter-spacing:.06em;padding:10px 16px;border-radius:var(--lab-r-sm);text-decoration:none;box-shadow:var(--lab-elev-3);transform:translateY(-200%);transition:transform var(--lab-dur-2) var(--lab-ease)}.kc-v4__skip:focus{transform:translateY(0)}.kc-v4__bar{display:flex;align-items:center;justify-content:space-between;gap:var(--lab-s-4);height:var(--lab-bar-h);padding:0 var(--lab-gutter);border-bottom:1px solid var(--lab-line);background:color-mix(in srgb,var(--lab-bg) 86%,transparent);backdrop-filter:saturate(1.05) blur(10px);-webkit-backdrop-filter:saturate(1.05) blur(10px);position:sticky;top:0;z-index:20}.kc-v4__bar-group{display:flex;align-items:center;gap:var(--lab-s-2);min-width:0}.kc-v4__bar-group--end{gap:var(--lab-s-3)}.kc-v4__brand{display:inline-flex;align-items:center;gap:9px;font-family:var(--lab-font-display);font-weight:500;font-size:17px;letter-spacing:-.01em;color:var(--lab-ink);text-decoration:none;padding:6px 4px;transition:opacity var(--lab-dur-2) var(--lab-ease)}.kc-v4__brand:hover{opacity:.78}.kc-v4__brand:before{content:"";width:9px;height:9px;border-radius:2px;background:var(--lab-gold);transform:rotate(45deg);flex-shrink:0}.kc-v4__icon-btn{-webkit-appearance:none;appearance:none;background:transparent;border:1px solid transparent;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--lab-r-sm);cursor:pointer;color:var(--lab-ink);transition:background-color var(--lab-dur-2) var(--lab-ease),border-color var(--lab-dur-2) var(--lab-ease),color var(--lab-dur-2) var(--lab-ease)}.kc-v4__icon-btn:hover{background:var(--lab-surface-2);border-color:var(--lab-line)}.kc-v4__icon-btn:active{background:var(--lab-surface-3)}.kc-v4__icon-btn svg{width:19px;height:19px}.kc-v4__new-btn{-webkit-appearance:none;appearance:none;background:var(--lab-ink);color:var(--lab-on-ink);border:0;border-radius:var(--lab-r-sm);min-height:40px;padding:0 18px;font-family:var(--lab-font-body);font-size:13.5px;font-weight:550;letter-spacing:.005em;cursor:pointer;display:inline-flex;align-items:center;gap:7px;box-shadow:var(--lab-elev-1);transition:transform var(--lab-dur-2) var(--lab-ease),box-shadow var(--lab-dur-2) var(--lab-ease),filter var(--lab-dur-2) var(--lab-ease)}.kc-v4__new-btn:hover{box-shadow:var(--lab-elev-2);filter:brightness(1.06);transform:translateY(-1px)}.kc-v4__new-btn:active{transform:translateY(0);box-shadow:var(--lab-elev-1)}.kc-v4__new-btn:before{content:"+";font-size:17px;line-height:1;margin-top:-1px}.kc-v4__usage{display:flex;flex-direction:column;gap:5px;min-width:144px}.kc-v4__usage[hidden]{display:none}.kc-v4__usage-meta{display:flex;align-items:baseline;justify-content:space-between;gap:var(--lab-s-3);font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--lab-stone)}.kc-v4__usage-label{color:var(--lab-stone)}.kc-v4__usage-count{color:var(--lab-ink);white-space:nowrap}.kc-v4__usage-count b{font-weight:600;color:var(--lab-gold)}.kc-v4__usage-track{height:5px;background:var(--lab-surface-2);border:1px solid var(--lab-line-soft);border-radius:var(--lab-r-pill);overflow:hidden}.kc-v4__usage-fill{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--lab-gold),var(--lab-gold-strong));transition:width .42s var(--lab-ease)}.kc-v4__usage--full .kc-v4__usage-fill{background:var(--lab-ink)}@media(max-width:720px){.kc-v4__bar{padding:0 14px}.kc-v4__usage{min-width:110px}}@media(max-width:520px){.kc-v4__brand{font-size:15px}.kc-v4__usage{display:none}}.kc-v4__main{flex:1;display:flex;flex-direction:column;position:relative;min-height:0}.kc-v4__scroll{flex:1;overflow-y:auto;overflow-x:hidden;padding:var(--lab-s-7) var(--lab-gutter) 200px;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--lab-stone-faint) transparent}.kc-v4__scroll::-webkit-scrollbar{width:11px}.kc-v4__scroll::-webkit-scrollbar-track{background:transparent}.kc-v4__scroll::-webkit-scrollbar-thumb{background:var(--lab-stone-faint);border-radius:var(--lab-r-pill);border:3px solid transparent;background-clip:content-box}.kc-v4__scroll::-webkit-scrollbar-thumb:hover{background:var(--lab-stone);background-clip:content-box}.kc-v4__center{max-width:var(--lab-measure);margin:0 auto;width:100%}@media(max-width:720px){.kc-v4__scroll{padding:var(--lab-s-5) 18px 196px}}.kc-v4__welcome{min-height:calc(100dvh - var(--lab-bar-h) - 230px);display:flex;flex-direction:column;justify-content:center;padding-bottom:var(--lab-s-8);text-align:center;animation:kc-v4-rise var(--lab-dur-3) var(--lab-ease) both}.kc-v4__welcome[hidden]{display:none}.kc-v4__greet-eye{font-family:var(--lab-font-mono);font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--lab-gold);margin:0 0 var(--lab-s-4)}.kc-v4__greet{font-family:var(--lab-font-display);font-weight:420;font-size:clamp(2.2rem,5.4vw,3.4rem);letter-spacing:-.022em;line-height:1.05;margin:0;color:var(--lab-ink)}.kc-v4__greet-sub{font-family:var(--lab-font-display);font-weight:340;font-style:italic;font-size:clamp(1.35rem,3.4vw,1.9rem);color:var(--lab-stone);letter-spacing:-.01em;margin:10px 0 0}.kc-v4__cats{display:inline-flex;flex-wrap:wrap;justify-content:center;gap:6px;margin:var(--lab-s-7) auto 0;padding:5px;background:var(--lab-surface-2);border:1px solid var(--lab-line);border-radius:var(--lab-r-pill);box-shadow:var(--lab-elev-1)}.kc-v4__cat{-webkit-appearance:none;appearance:none;background:transparent;border:0;border-radius:var(--lab-r-pill);padding:8px 18px;min-height:36px;font-family:var(--lab-font-body);font-size:13px;font-weight:500;color:var(--lab-stone);cursor:pointer;transition:color var(--lab-dur-1) var(--lab-ease),background var(--lab-dur-2) var(--lab-ease),box-shadow var(--lab-dur-2) var(--lab-ease)}.kc-v4__cat:hover{color:var(--lab-ink)}.kc-v4__cat[aria-pressed=true]{background:var(--lab-surface);color:var(--lab-gold-strong);box-shadow:var(--lab-elev-1)}.kc-v4__prompts{margin:var(--lab-s-7) auto 0;display:grid;grid-template-columns:1fr 1fr;gap:var(--lab-s-3);width:100%;max-width:720px}@media(max-width:640px){.kc-v4__prompts{grid-template-columns:1fr}}.kc-v4__prompt{-webkit-appearance:none;appearance:none;position:relative;background:var(--lab-surface);border:1px solid var(--lab-line);border-radius:var(--lab-r-md);padding:16px 18px;text-align:left;font-family:var(--lab-font-body);font-size:14px;line-height:1.5;color:var(--lab-ink);cursor:pointer;box-shadow:var(--lab-elev-1);overflow:hidden;transition:border-color var(--lab-dur-2) var(--lab-ease),transform var(--lab-dur-2) var(--lab-ease),box-shadow var(--lab-dur-2) var(--lab-ease)}.kc-v4__prompt:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lab-gold);transform:scaleY(0);transform-origin:top;transition:transform var(--lab-dur-3) var(--lab-ease)}.kc-v4__prompt:hover{border-color:var(--lab-gold-line);transform:translateY(-2px);box-shadow:var(--lab-elev-2)}.kc-v4__prompt:hover:before{transform:scaleY(1)}.kc-v4__prompt:active{transform:translateY(0)}.kc-v4__prompt-eye{display:block;font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--lab-gold);margin-bottom:7px}.kc-v4__thread{padding-top:var(--lab-s-3)}.kc-v4__thread[hidden]{display:none}.kc-v4__msg{margin-bottom:var(--lab-s-7);position:relative;animation:kc-v4-msg-in var(--lab-dur-3) var(--lab-ease) both}.kc-v4__msg-role{font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--lab-stone);margin:0 0 10px;display:flex;align-items:center;gap:10px}.kc-v4__msg--assistant .kc-v4__msg-role>span:first-child{color:var(--lab-gold-strong)}.kc-v4__msg-role-mode{display:inline-block;padding:2px 8px;border:1px solid var(--lab-line);border-radius:var(--lab-r-pill);font-size:9px;letter-spacing:.12em;color:var(--lab-stone);background:var(--lab-surface-2)}.kc-v4__msg--user{display:flex;flex-direction:column;align-items:flex-end}.kc-v4__msg--user .kc-v4__msg-role{justify-content:flex-end}.kc-v4__msg--user .kc-v4__msg-text{background:var(--lab-surface-2);border:1px solid var(--lab-line);border-radius:var(--lab-r-lg) var(--lab-r-lg) var(--lab-r-xs) var(--lab-r-lg);padding:14px 18px;max-width:min(100%,38rem);font-size:var(--lab-fs-body);line-height:1.6;color:var(--lab-ink);box-shadow:var(--lab-elev-1)}.kc-v4__msg--user .kc-v4__msg-actions{justify-content:flex-end}.kc-v4__msg--assistant .kc-v4__msg-text{font-size:var(--lab-fs-body);line-height:var(--lab-line-h);color:var(--lab-ink);padding-left:var(--lab-s-5);border-left:2px solid var(--lab-gold-line)}@media(max-width:600px){.kc-v4__msg--assistant .kc-v4__msg-text{padding-left:var(--lab-s-4)}}.kc-v4__msg-text p{margin:0 0 .9em}.kc-v4__msg-text>:first-child{margin-top:0}.kc-v4__msg-text>:last-child{margin-bottom:0}.kc-v4__msg-text h3,.kc-v4__msg-text h4,.kc-v4__msg-text h5{font-family:var(--lab-font-display);font-weight:460;letter-spacing:-.012em;margin:1.4em 0 .5em;color:var(--lab-ink-soft);line-height:1.2}.kc-v4__msg-text h3{font-size:1.42rem}.kc-v4__msg-text h4{font-size:1.16rem}.kc-v4__msg-text h5{font-size:1rem;font-weight:600;font-family:var(--lab-font-body)}.kc-v4__msg-text ul,.kc-v4__msg-text ol{margin:0 0 .9em;padding-left:1.4em}.kc-v4__msg-text li{margin-bottom:.4em;padding-left:.2em}.kc-v4__msg-text li::marker{color:var(--lab-gold)}.kc-v4__msg-text strong{font-weight:650;color:var(--lab-ink)}.kc-v4__msg-text em{font-style:italic}.kc-v4__msg-text code{font-family:var(--lab-font-mono);font-size:.88em;background:var(--lab-surface-2);border:1px solid var(--lab-line-soft);padding:1px 6px;border-radius:var(--lab-r-xs);color:var(--lab-ink)}.kc-v4__msg-text a{color:var(--lab-gold-strong);text-decoration:underline;text-decoration-color:var(--lab-gold-line);text-underline-offset:3px;transition:text-decoration-color var(--lab-dur-2) var(--lab-ease)}.kc-v4__msg-text a:hover{text-decoration-color:var(--lab-gold)}.kc-v4__cite{display:inline-block;font-family:var(--lab-font-mono);font-size:.72em;font-weight:600;line-height:1;vertical-align:super;background:var(--lab-gold-tint);border:1px solid var(--lab-gold-line);padding:2px 5px;border-radius:var(--lab-r-pill);color:var(--lab-gold-strong);margin:0 1px}.kc-v4__codeblock{margin:1em 0;border:1px solid var(--lab-line);border-radius:var(--lab-r-md);background:var(--lab-surface);overflow:hidden;box-shadow:var(--lab-elev-1)}.kc-v4__codeblock-head{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;background:var(--lab-surface-2);border-bottom:1px solid var(--lab-line);font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--lab-stone)}.kc-v4__codeblock-copy{-webkit-appearance:none;appearance:none;background:transparent;border:1px solid var(--lab-line);border-radius:var(--lab-r-xs);padding:3px 10px;font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.08em;color:var(--lab-stone);cursor:pointer;transition:color var(--lab-dur-2) var(--lab-ease),border-color var(--lab-dur-2) var(--lab-ease)}.kc-v4__codeblock-copy:hover{color:var(--lab-gold-strong);border-color:var(--lab-gold-line)}.kc-v4__codeblock pre{margin:0;padding:16px;overflow-x:auto}.kc-v4__codeblock code{font-family:var(--lab-font-mono);font-size:13px;line-height:1.6;background:transparent;border:0;padding:0;color:var(--lab-ink)}.kc-v4__msg-actions{display:flex;gap:6px;margin-top:10px;opacity:0;transform:translateY(2px);transition:opacity var(--lab-dur-2) var(--lab-ease),transform var(--lab-dur-2) var(--lab-ease)}.kc-v4__msg:hover .kc-v4__msg-actions,.kc-v4__msg:focus-within .kc-v4__msg-actions{opacity:1;transform:translateY(0)}.kc-v4__msg-act{-webkit-appearance:none;appearance:none;background:var(--lab-surface);border:1px solid var(--lab-line);border-radius:var(--lab-r-pill);padding:5px 12px;font-family:var(--lab-font-mono);font-size:10px;letter-spacing:.1em;color:var(--lab-stone);cursor:pointer;transition:color var(--lab-dur-2) var(--lab-ease),border-color var(--lab-dur-2) var(--lab-ease),background var(--lab-dur-2) var(--lab-ease)}.kc-v4__msg-act:hover{color:var(--lab-gold-strong);border-color:var(--lab-gold-line);background:var(--lab-gold-tint-2)}.kc-v4__cursor{display:inline-block;width:3px;height:1.05em;border-radius:2px;background:var(--lab-gold);margin-left:3px;vertical-align:text-bottom;animation:kc-v4-blink 1.05s steps(2,jump-none) infinite}@keyframes kc-v4-blink{50%{opacity:0}}.kc-v4__thinking{display:inline-flex;align-items:center;gap:9px;padding:8px 14px;background:var(--lab-surface-2);border:1px solid var(--lab-line);border-radius:var(--lab-r-pill);font-family:var(--lab-font-mono);font-size:11px;letter-spacing:.08em;color:var(--lab-stone)}.kc-v4__thinking-dot{width:7px;height:7px;background:var(--lab-gold);border-radius:50%;animation:kc-v4-think .95s ease-in-out infinite alternate}@keyframes kc-v4-think{0%{transform:scale(.55);opacity:.35}to{transform:scale(1);opacity:1}}.kc-v4__error{border:1px solid var(--lab-line);border-left:3px solid var(--lab-gold);border-radius:var(--lab-r-md);background:var(--lab-surface);padding:16px 18px;margin-bottom:var(--lab-s-6);font-size:14px;color:var(--lab-ink);box-shadow:var(--lab-elev-1)}.kc-v4__error strong{display:block;margin-bottom:4px;font-weight:650}.kc-v4__error-detail{font-size:12px;color:var(--lab-stone);margin:0;font-family:var(--lab-font-mono)}.kc-v4__composer-wrap{position:sticky;bottom:0;padding:var(--lab-s-4) var(--lab-gutter) var(--lab-s-5);z-index:5;background:linear-gradient(to top,var(--lab-bg) 32%,color-mix(in srgb,var(--lab-bg) 88%,transparent) 72%,transparent 100%)}@media(max-width:720px){.kc-v4__composer-wrap{padding:var(--lab-s-3) 18px var(--lab-s-4)}}.kc-v4__composer{max-width:var(--lab-measure);margin:0 auto;position:relative}.kc-v4__modelbar{max-width:var(--lab-measure);margin:0 auto var(--lab-s-3);display:flex;flex-direction:column;align-items:center;gap:var(--lab-s-2)}.kc-v4__models{display:inline-flex;padding:4px;gap:2px;border:1px solid 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