:root{--ink:#101412;--paper:#f1f2ed;--white:#fbfcf8;--line:#343a36;--muted:#656c67;--mint:#79f2bd;--red:#ff5c4a;--blue:#3978ff;--gray:#dce0d8;--header:56px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;overflow-x:clip;background:var(--paper);color:var(--ink);font-family:Satoshi,"Helvetica Neue",Arial,sans-serif;letter-spacing:0}button,input{font:inherit;letter-spacing:0}[hidden]{display:none!important}.site-header{position:sticky;top:0;z-index:30;height:var(--header);display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 22px;background:var(--ink);color:#fff;border-bottom:1px solid #000}.brand{min-width:0;display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:nowrap}.sheet-mark{width:28px;height:18px;flex:0 0 auto;border:1px solid #fff;background:linear-gradient(90deg,var(--mint) 0 32%,transparent 32% 35%,var(--red) 35% 67%,transparent 67% 70%,var(--blue) 70%)}#runtime{color:var(--mint);font:700 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:nowrap}.workbench{min-height:calc(100vh - var(--header));display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);border-bottom:2px solid var(--ink);outline:0}.loader-panel,.result-panel{min-width:0}.loader-panel{display:flex;flex-direction:column;gap:13px;padding:23px 26px 20px;border-right:2px solid var(--ink);background:repeating-linear-gradient(0deg,transparent 0 31px,rgba(16,20,18,.055) 31px 32px),var(--paper)}.eyebrow{margin:0 0 5px;color:var(--red);font:800 9px/1.25 ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase}.eyebrow.mint{color:var(--mint)}h1,h2,p,span,code{overflow-wrap:anywhere}.loader-panel h1{width:min(100%,17ch);margin:0;font-size:clamp(2.45rem,4.5vw,4.9rem);line-height:.92;letter-spacing:0}.intro{max-width:58ch;margin:0;color:#505750;font-size:12px;line-height:1.48}.primary-actions,.utility-actions,.result-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.button,.text-button,.icon-button,.file-control{min-height:44px;border:1px solid var(--ink);border-radius:2px;cursor:pointer;font-weight:800}.button{padding:0 14px;white-space:nowrap;transition:transform 160ms ease}.button:hover:not(:disabled),.text-button:hover,.icon-button:hover,.file-control:hover{transform:translateY(-1px)}.button:focus-visible,.text-button:focus-visible,.icon-button:focus-visible,.file-control:focus-within,.workbench:focus-visible{outline:3px solid var(--blue);outline-offset:2px}.button:disabled{opacity:.45;cursor:not-allowed}.button.primary{background:var(--mint);color:var(--ink)}.button.ink{background:var(--ink);color:#fff}.export-button{background:var(--blue);color:#fff;border-color:var(--blue)}.outline-button{background:transparent;color:#fff;border-color:#737b74}.error-banner{padding:10px 12px;border:1px solid #a32618;background:#ffd9d2;color:#741c12;font:700 10px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace}.file-control{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;background:var(--white);padding:0 12px;font-size:10px}.file-control span{color:var(--muted);font-weight:700}.file-control strong{padding-left:12px;border-left:1px solid var(--line);white-space:nowrap}.file-control input{position:absolute;width:1px;height:1px;opacity:0}.sheet-map{display:grid;grid-template-columns:minmax(0,1fr) 28px minmax(0,1fr);align-items:stretch;border-top:1px solid var(--line);border-left:1px solid var(--line)}.sheet-map>div{min-width:0;padding:11px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.5)}.sheet-map span{display:block;margin-bottom:7px;font-size:11px;font-weight:900}.sheet-map code{display:block;color:var(--muted);font:600 8px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace}.sheet-map b{display:flex;align-items:center;justify-content:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--blue);font-size:16px}.text-button{min-height:34px;padding:0 3px;border:0;border-bottom:1px solid var(--ink);border-radius:0;background:transparent;color:var(--ink);font-size:9px}.workbook-status,.live-status{margin:0;color:var(--muted);font:600 9px/1.35 ui-monospace,SFMono-Regular,Menlo,monospace}.workbook-status{color:#353a36;font-weight:800}.result-panel{position:relative;display:flex;padding:20px 24px;background:var(--ink);color:#fff}.result-panel:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;background-image:linear-gradient(rgba(255,255,255,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.18) 1px,transparent 1px);background-size:34px 34px}.merge-line{position:absolute;left:0;right:0;top:0;height:3px;opacity:0;background:var(--mint);box-shadow:0 0 18px var(--mint)}.result-panel.is-merging .merge-line{animation:merge 480ms ease-out}@keyframes merge{0%{opacity:0;transform:translateX(-70%)}30%{opacity:1}100%{opacity:0;transform:translateX(70%)}}.empty-state,.result-content{position:relative;z-index:1;width:100%;align-self:center}.empty-state{max-width:710px;padding:16px}.empty-state h2{max-width:14ch;margin:0;font-size:clamp(2.6rem,5vw,5.4rem);line-height:.92;letter-spacing:0}.empty-state>p:not(.eyebrow){max-width:58ch;color:#bdc4be;font-size:13px;line-height:1.5}.rule-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin-top:28px;border-top:1px solid #535a55;border-left:1px solid #535a55}.rule-strip span{min-width:0;padding:12px 6px;border-right:1px solid #535a55;border-bottom:1px solid #535a55;color:#9ba49d;font:700 8px/1.25 ui-monospace,SFMono-Regular,Menlo,monospace}.result-content{align-self:flex-start}.result-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}.result-heading h2{max-width:20ch;margin:0;font-size:clamp(2rem,3.4vw,3.85rem);line-height:.92;letter-spacing:0}.icon-button{width:44px;flex:0 0 44px;padding:0;border-color:#6d756e;background:transparent;color:#fff;font-size:19px}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:12px;border-top:1px solid #505851;border-left:1px solid #505851}.metrics>div{min-width:0;padding:8px 9px;border-right:1px solid #505851;border-bottom:1px solid #505851}.metrics span{display:block;color:#8f9890;font:700 7px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase}.metrics strong{display:block;margin-top:3px;color:var(--mint);font-size:1.25rem}.exception-strip{display:grid;grid-template-columns:150px 150px minmax(0,1fr);border-bottom:1px solid #505851}.exception-strip>*{min-width:0;padding:8px;border-right:1px solid #505851;font:700 8px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace}.exception-strip span{color:#ff9c8e}.exception-strip strong{color:#aab3ac;border-right:0}.application-ledger{border-top:1px solid #505851}.application-row{display:grid;grid-template-columns:68px minmax(92px,.8fr) minmax(118px,1fr) minmax(0,1.8fr);border-bottom:1px solid #505851;animation:row-in 260ms ease-out both}.application-row:nth-child(2){animation-delay:35ms}.application-row:nth-child(3){animation-delay:70ms}.application-row:nth-child(4){animation-delay:105ms}@keyframes row-in{from{opacity:.2;transform:translateX(9px)}to{opacity:1;transform:translateX(0)}}.application-row>*{min-width:0;padding:8px;border-right:1px solid #505851}.application-row>*:last-child{border-right:0}.application-id{font:800 9px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--mint)}.application-name strong{display:block;font-size:10px}.application-name span{display:block;margin-top:3px;color:#98a099;font-size:8px}.status-change span{display:block;color:#98a099;font:600 8px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace}.status-change strong{display:block;margin-top:3px;color:#fff;font-size:11px}.status-change.changed strong{color:var(--mint)}.mail-proof strong{display:block;font-size:9px}.mail-proof span{display:block;margin-top:3px;color:#a7afa8;font-size:8px;line-height:1.35}.result-actions{padding-top:11px}#export-status{min-width:0;color:#99a29b;font:600 8px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace}.reasoning-band{display:grid;grid-template-columns:minmax(220px,.75fr) minmax(0,2fr);gap:42px;padding:60px 28px 66px;border-bottom:2px solid var(--ink)}.reasoning-band h2{max-width:13ch;margin:0;font-size:clamp(2.2rem,4vw,4.3rem);line-height:.94;letter-spacing:0}.reasoning-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.reasoning-grid article{min-width:0;padding:18px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}.reasoning-grid strong{font-size:12px}.reasoning-grid p{margin:9px 0 0;color:var(--muted);font-size:11px;line-height:1.5}.misconception-band{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));background:var(--blue);color:#fff}.misconception-band>div{display:grid;grid-template-columns:minmax(140px,.8fr) minmax(0,1.7fr);gap:18px;padding:23px 28px;border-right:2px solid var(--ink)}.misconception-band>div:last-child{border-right:0}.misconception-band strong{font-size:12px}.misconception-band span{font-size:11px;line-height:1.5}.limits-band{display:grid;grid-template-columns:150px minmax(0,1fr);gap:22px;padding:22px 28px;background:var(--mint);font-size:11px;line-height:1.5}@media(max-width:900px){:root{--header:58px}.site-header{padding:0 16px}.workbench{grid-template-columns:minmax(0,1fr)}.loader-panel{padding:20px 16px;border-right:0;border-bottom:2px solid var(--ink)}.loader-panel h1{font-size:clamp(2.45rem,11vw,3.5rem)}.result-panel{min-height:760px;padding:20px 16px}.result-content,.empty-state{align-self:flex-start;padding-top:0}.result-heading h2{max-width:100%;font-size:2.25rem}.application-row{grid-template-columns:72px minmax(0,1fr) minmax(0,1.25fr)}.mail-proof{grid-column:1/-1;border-top:1px solid #505851;border-right:0!important}.reasoning-band{grid-template-columns:minmax(0,1fr);gap:28px;padding:44px 16px}.reasoning-grid{grid-template-columns:minmax(0,1fr)}.misconception-band{grid-template-columns:minmax(0,1fr)}.misconception-band>div{border-right:0;border-bottom:2px solid var(--ink);padding:22px 16px}.limits-band{grid-template-columns:minmax(0,1fr);padding:20px 16px}}@media(max-width:520px){.brand span:last-child{max-width:205px;overflow:hidden;text-overflow:ellipsis}#runtime{font-size:8px}.primary-actions .button{flex:1 1 155px}.sheet-map{grid-template-columns:minmax(0,1fr)}.sheet-map b{min-height:28px}.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.exception-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.exception-strip strong{grid-column:1/-1;border-top:1px solid #505851}.application-row{grid-template-columns:68px minmax(0,1fr)}.status-change{grid-column:1/-1;border-top:1px solid #505851}.result-actions .button{flex:1 1 145px}.misconception-band>div{grid-template-columns:minmax(0,1fr);gap:8px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}