@font-face{font-family:Inter;font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/Inter-latin-var.woff2) format("woff2")}
:root{--ink:#111;--body:#2b2b2b;--mute:#6b6b6b;--rule:#e4e4e4;--accent:#1f3fbf;--label:9rem}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--body);font:400 1rem/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-feature-settings:"cv11","ss01";-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration:underline;text-decoration-color:#c4c4c4;text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--accent);text-decoration-color:currentColor}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.page{max-width:72rem;margin:0 auto;padding:4rem 2.5rem 4rem}
.top{padding-bottom:2.5rem;max-width:44rem}
h1{margin:0;color:var(--ink);font-weight:650;font-size:2.75rem;line-height:1.08;letter-spacing:-.03em}
.lead{margin:1rem 0 0;font-size:1.0625rem;line-height:1.65;text-wrap:pretty}
section{border-top:1px solid var(--rule);padding:1.75rem 0 2.25rem}
h2{margin:0 0 1.1rem;font-size:.75rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--ink)}
.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,22rem);column-gap:4rem;align-items:start}
.stage{width:100%;aspect-ratio:1;max-width:44rem}
.stage canvas{display:block;width:100%;height:100%;background:#fff}
.row{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1rem}
.btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;min-height:2.5rem;padding:.5rem 1rem;border:1px solid #cfcfcf;border-radius:3px;background:#fff;color:var(--ink);font-family:inherit;font-size:.9375rem;font-weight:500;line-height:1.2;cursor:pointer}
.btn:hover{border-color:var(--ink)}
.btn.primary{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.primary:hover{background:#000}
.status{margin:.9rem 0 0;min-height:1.5em;font-size:.875rem;color:var(--mute);font-variant-numeric:tabular-nums}
.field{margin-top:1rem}
.field label{display:flex;justify-content:space-between;align-items:baseline;font-size:.875rem;font-weight:600;color:var(--ink)}
.field output{font-weight:400;color:var(--body);font-variant-numeric:tabular-nums}
input[type=range]{width:100%;margin:.4rem 0 0;accent-color:var(--ink);height:1.4rem}
select{display:block;width:100%;margin-top:.35rem;min-height:2.5rem;padding:.4rem .6rem;border:1px solid #cfcfcf;border-radius:3px;background:#fff;color:var(--ink);font-family:inherit;font-size:.9375rem}
.check{display:flex;gap:.6rem;align-items:flex-start;margin-top:1rem;font-size:.9375rem;color:var(--ink)}
.check input{margin:.3rem 0 0;accent-color:var(--ink);width:1rem;height:1rem;flex:none}
.hint{margin:.3rem 0 0;font-size:.8125rem;line-height:1.5;color:var(--mute)}
fieldset{border:0;border-top:1px solid var(--rule);margin:1.4rem 0 0;padding:1rem 0 0;min-width:0}
fieldset legend{padding:0;font-size:.9375rem;font-weight:600;color:var(--ink)}
fieldset .sub{margin:.1rem 0 0;font-size:.8125rem;color:var(--mute)}
fieldset.off .field{opacity:.45}
fieldset .check{margin-top:.6rem}
.controls section:first-child{margin-top:0}
.how{display:grid;grid-template-columns:var(--label) minmax(0,1fr);column-gap:3rem}
.how h2{margin-top:.2rem}
.text{max-width:40rem}
.text p{margin:0 0 .8rem;font-size:.9375rem;line-height:1.65}
.text .eq{margin:.4rem 0 .9rem;font-size:1rem;color:var(--ink);overflow-x:auto;white-space:nowrap}
var{font-style:italic}
.printout{display:none}
@media (max-width:860px){
 .page{padding:2.25rem 1.375rem 3rem}
 h1{font-size:2.25rem}
 .tool{grid-template-columns:1fr}
 .controls{max-width:30rem}
 .how{grid-template-columns:minmax(0,1fr)}
 .text .eq{font-size:.875rem}
}
@media print{
 @page{size:auto;margin:15mm}
 .app{display:none!important}
 .printout{display:block;text-align:center;font:400 9pt/1.4 Inter,system-ui,sans-serif;color:#000}
 .printout svg{width:170mm;height:170mm;display:block;margin:0 auto}
 .printout p{margin:6mm 0 0;color:#555}
}
.colorrow{display:flex;align-items:center;gap:.75rem;margin-top:.35rem}
input[type=color]{appearance:none;-webkit-appearance:none;width:3rem;height:2.5rem;padding:.2rem;border:1px solid #cfcfcf;border-radius:3px;background:#fff;cursor:pointer}
input[type=color]::-webkit-color-swatch-wrapper{padding:0}
input[type=color]::-webkit-color-swatch{border:0;border-radius:1px}
input[type=color]::-moz-color-swatch{border:0;border-radius:1px}
.colorrow .btn{min-height:2.5rem}
.field.off{opacity:.45}
[hidden]{display:none!important}