:root{--paper:#f5f2e8;--white:#fffdf8;--ink:#10120f;--muted:#626762;--rule:#bbbdb4;--blue:#1846ff;--yellow:#f4dd39;--green:#087b53;--greenp:#daf2e7;--red:#d93c24;--redp:#f9ddd4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:Outfit,"Avenir Next","Segoe UI",sans-serif;letter-spacing:0}button,input,textarea{font:inherit;letter-spacing:0}button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.masthead{min-height:58px;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--ink);background:var(--white)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:850;white-space:nowrap}.mark{display:grid;place-items:center;width:42px;height:32px;background:var(--yellow);border:1px solid var(--ink);font:800 11px ui-monospace,monospace}.masthead p{margin:0;color:var(--muted);font:11px ui-monospace,monospace;text-align:right}.intro{padding:38px 4vw 28px;border-bottom:1px solid var(--ink);background:linear-gradient(90deg,var(--white) 0 78%,var(--yellow) 78%)}.eyebrow{margin:0;color:var(--blue);font:800 10px ui-monospace,monospace;text-transform:uppercase}.intro h1{max-width:1050px;margin:7px 0 0;font-size:clamp(2.4rem,5.7vw,5rem);line-height:.97;letter-spacing:0;text-wrap:balance}.lede{max-width:860px;margin:16px 0 0;font-size:clamp(1rem,1.4vw,1.2rem);line-height:1.45}.workspace{padding:18px 4vw 28px}.command-row{display:grid;grid-template-columns:repeat(4,max-content) 44px;gap:8px;margin-bottom:12px}.button,.icon-button{min-height:44px;border:1px solid var(--ink);border-radius:0;font-weight:800;cursor:pointer;transition:transform .15s ease}.button{padding:10px 14px;white-space:nowrap}.button:hover:not(:disabled),.icon-button:hover{transform:translateY(-2px)}.button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.dark{background:var(--ink);color:#fff}.light{background:var(--white);color:var(--ink)}.icon-button{width:44px;background:transparent;font-size:22px}.parameter-row{display:flex;align-items:center;gap:16px;margin-bottom:12px;padding:9px 12px;border:1px solid var(--ink);background:var(--yellow)}.parameter-row label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:800}.parameter-row input{width:70px;height:34px;border:1px solid var(--ink);background:#fff;padding:5px 7px}.parameter-row p{margin:0 0 0 auto;font:12px ui-monospace,monospace}.input-error{margin:0 0 12px;padding:11px 13px;border:2px solid var(--red);background:var(--redp)}.input-error[hidden],.result-panel[hidden]{display:none}.input-error ol{margin:5px 0 0;padding-left:20px;font-size:12px}.editor-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:dense;gap:12px}.editor{min-width:0;border:1px solid var(--ink);background:var(--white)}.editor-head{min-height:58px;padding:9px 11px;display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid var(--ink)}.editor-head span{color:var(--blue);font:800 9px ui-monospace,monospace}.editor-head h2{margin:2px 0 0;font-size:16px}.editor-head small{color:var(--muted);font:10px ui-monospace,monospace;text-align:right}textarea{display:block;width:100%;height:126px;resize:vertical;border:0;padding:11px;background:#fff;font:11px/1.45 ui-monospace,monospace;white-space:pre;overflow:auto}.hint{margin:9px 0 0;color:var(--muted);font-size:12px}kbd{padding:1px 5px;border:1px solid var(--rule);background:#fff;font-family:ui-monospace,monospace}.result-panel{border-top:1px solid var(--ink);background:var(--white)}.result-mast{padding:24px 4vw;display:grid;grid-template-columns:minmax(0,1fr) minmax(290px,.45fr);gap:36px;background:var(--ink);color:#fff}.result-mast h2{margin:6px 0 8px;font-size:clamp(2rem,4.4vw,4.7rem);line-height:.94;letter-spacing:0}.result-mast p{margin:0;max-width:780px;color:#ccd0ca;line-height:1.45}.metrics{display:flex;flex-direction:column;justify-content:center;gap:8px;padding-left:25px;border-left:1px solid #52564f}.metrics strong{font-size:clamp(1.1rem,2vw,1.6rem)}.metrics span{color:#bbc0b9;font-size:13px}.ruler-wrap{padding:20px 4vw 8px}.result-head{display:flex;align-items:end;justify-content:space-between;gap:20px}.result-head h3{margin:3px 0 0;font-size:22px}.result-head>p{margin:0;color:var(--muted);font:10px ui-monospace,monospace;text-align:right}.chunk-ruler{display:flex;min-width:0;margin-top:12px;border:1px solid var(--ink);overflow:hidden;background:var(--yellow)}.chunk{min-width:0;flex:1;padding:9px 7px;border-right:1px solid var(--ink);font:10px/1.25 ui-monospace,monospace}.chunk:last-child{border-right:0}.chunk strong{display:block;font-size:12px}.span-rows{margin:4px 4vw 0;border-top:1px solid var(--ink)}.span-row{--tone:var(--green);display:grid;grid-template-columns:minmax(190px,1.15fr) minmax(180px,.75fr) minmax(220px,1fr) minmax(220px,1.3fr);box-shadow:inset 6px 0 0 var(--tone);border-bottom:1px solid var(--ink);background:linear-gradient(90deg,var(--greenp),transparent 44%)}.span-row[data-status="LOST AT BOUNDARY"]{--tone:var(--red);background:linear-gradient(90deg,var(--redp),transparent 44%)}.cell{min-width:0;padding:13px 13px 13px 18px;border-right:1px solid var(--rule)}.cell:last-child{border-right:0}.cell-label{display:block;margin-bottom:5px;color:var(--muted);font:9px ui-monospace,monospace;text-transform:uppercase}.question{font:700 16px/1.2 Georgia,serif}.status{color:var(--tone);font-size:12px;font-weight:900}.mono{overflow-wrap:anywhere;font:11px/1.4 ui-monospace,monospace}.why{color:#343833;font-size:12px;line-height:1.4}.result-footer{padding:22px 4vw 30px;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.5fr);gap:34px;align-items:center}.boundary-note{padding-left:13px;border-left:5px solid var(--red)}.boundary-note p,.export-actions p{margin:5px 0 0;color:var(--muted);line-height:1.45}.export-actions{display:grid;gap:5px}.export-actions p{font-size:12px}footer{min-height:80px;padding:20px 4vw;display:flex;align-items:center;justify-content:space-between;gap:18px;background:var(--blue);color:#fff}footer p{margin:0}footer a{color:#fff;font-weight:800}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:850px){.command-row{grid-template-columns:repeat(2,minmax(0,1fr))}.button{white-space:normal}.icon-button{width:100%}.editor-grid,.result-mast,.result-footer{grid-template-columns:1fr}.metrics{padding:17px 0 0;border-left:0;border-top:1px solid #52564f}.span-row{grid-template-columns:repeat(2,minmax(0,1fr))}.cell:nth-child(2){border-right:0}.cell:nth-child(-n+2){border-bottom:1px solid var(--rule)}}@media(max-width:520px){.masthead{padding:0 16px}.brand{font-size:13px}.masthead p{max-width:155px;font-size:9px}.intro,.workspace,.result-mast,.ruler-wrap,.result-footer{padding-left:16px;padding-right:16px}.intro{background:var(--white)}.intro h1{font-size:2.55rem}.command-row{gap:6px}.button{padding:8px 7px;font-size:11px;line-height:1.2}.parameter-row{align-items:flex-start;flex-wrap:wrap}.parameter-row p{width:100%;margin:0}.editor-grid{grid-template-columns:1fr}textarea{height:155px;font-size:10px}.chunk-ruler{display:grid;grid-template-columns:repeat(3,1fr)}.chunk{border-bottom:1px solid var(--ink)}.span-rows{margin-left:16px;margin-right:16px}.span-row{grid-template-columns:1fr}.cell{border-right:0;border-bottom:1px solid var(--rule)}.cell:last-child{border-bottom:0}.result-head{align-items:flex-start}.result-head>p{max-width:140px}footer{padding:18px 16px;flex-direction:column;align-items:flex-start;font-size:12px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}