*{box-sizing:border-box}
:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#202b32;background:#faf9f6;font-size:16px;line-height:1.6}
body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{touch-action:manipulation}
a{color:inherit;text-underline-offset:.22em}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}
:focus-visible{outline:3px solid #b44d28;outline-offset:4px}
[hidden]{display:none!important}.wrap{max-width:1180px;margin:auto;padding:0 28px;min-width:0}
.skip{position:absolute;top:-100px;left:16px;background:#fff;color:#202b32;padding:12px;z-index:5}.skip:focus{top:10px}
header{background:#fff;border-bottom:1px solid #dddcd5}.header-inner{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:16px;padding-bottom:16px}
.brand{font-size:21px;font-weight:800;letter-spacing:-.5px;text-decoration:none;display:flex;align-items:center;gap:10px}.brand:before{content:"";width:15px;height:15px;border-radius:50%;background:#d16343;flex:0 0 auto}
.header-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:14px;font-weight:650}
.hero{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:42px;align-items:center;padding:45px 0 32px}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#785c4a;font-weight:750;margin:0 0 12px}
h1{font-size:clamp(32px,4.1vw,52px);line-height:1.12;letter-spacing:-.04em;margin:0 0 18px;max-width:780px}h2{font-size:25px;line-height:1.25;letter-spacing:-.025em;margin:0 0 10px}h3{font-size:18px;line-height:1.3;margin:0 0 8px}p{margin:0 0 16px}.intro{color:#526068;max-width:760px;margin:0}.hero-art{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;height:145px;align-items:end}.hero-art span{height:100%;border-radius:50px 50px 9px 9px}.hero-art span:nth-child(even){height:80%}
.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:24px;align-items:start}.panel{background:white;border:1px solid #dedfd8;border-radius:12px;padding:25px;min-width:0}.step{font-size:12px;text-transform:uppercase;letter-spacing:.1em;font-weight:750;color:#785c4a}.helper{font-size:14px;color:#526068}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px;margin:22px 0 16px}.field{min-width:0}.field-label{display:block;font-weight:750;margin-bottom:6px;font-size:15px}.input-pair{display:flex;gap:9px;align-items:center;min-width:0}.hex{width:100%;min-width:0;border:1px solid #83918d;background:#fff;color:#202b32;border-radius:6px;padding:10px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:15px;font-weight:650;min-height:46px}.hex[aria-invalid=true]{border:2px solid #a13623;padding:9px}.picker{display:block;width:46px;height:46px;flex:0 0 46px;padding:3px;border:1px solid #83918d;border-radius:6px;background:#fff;cursor:pointer}.field-error{color:#a13623;font-size:13px;font-weight:600;display:block;margin-top:5px;min-height:0}.button{background:#203f3b;color:#fff;border:1px solid #203f3b;border-radius:6px;padding:11px 17px;font-weight:700;font-size:14px;min-height:44px}.button.secondary{background:#fff;color:#203f3b}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.small-link{font-size:14px}.feedback{font-size:14px;min-height:23px;margin:12px 0 0;color:#384c43}.feedback.error{color:#a13623;font-weight:650}
.preview-shell{border:1px solid #b4bcb6;border-radius:10px;overflow:hidden;margin-top:18px}.preview{padding:30px;background:var(--palette-background);color:var(--palette-text);min-height:265px}.preview .preview-kicker{font-size:11px;letter-spacing:.13em;text-transform:uppercase;margin-bottom:10px}.preview h3{font-size:29px;font-weight:750;letter-spacing:-.035em;line-height:1.15;margin-bottom:16px}.preview p{font-size:16px}.preview-link{font-size:15px;font-weight:650}.preview-button{display:inline-block;background:var(--palette-accent);color:var(--palette-on-accent);border:0;border-radius:5px;padding:12px 18px;font-weight:750;font-size:15px;min-height:44px;margin-bottom:15px}.preview-placeholder{min-height:265px;background:#f1f2ef;color:#202b32;padding:30px;display:flex;align-items:center}.preview-note{font-size:13px;margin:12px 0 0;color:#526068}
.results{margin-top:24px}.results-header{margin-bottom:18px}.checks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.check{padding:20px;background:#fff;border:1px solid #dedfd8;border-radius:9px;min-width:0}.ratio{display:block;font-size:32px;line-height:1.2;font-weight:750;letter-spacing:-.035em;margin:12px 0}.pair-codes{font:12px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;color:#526068;overflow-wrap:anywhere;min-height:20px}.check-status{font-size:14px;line-height:1.5;font-weight:650;margin-bottom:7px}.check-status.pass{color:#28553b}.check-status.fail{color:#a13623}.check-status.pending{color:#526068}.check-detail{font-size:13px;line-height:1.5;color:#526068;margin:0}
.export-panel{margin-top:24px;display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1fr);gap:26px}.export-label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}.code-output{width:100%;max-width:100%;min-height:208px;background:#f5f6f2;border:1px solid #a2aba3;border-radius:7px;color:#20312e;padding:16px;resize:vertical;font:13px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre;overflow:auto}.export-actions{margin:20px 0 4px}.manual-help{font-size:14px;font-weight:650;color:#a13623;margin:9px 0 0}.method{margin:26px 0 38px;padding:24px 0;border-top:1px solid #dddcd5}.method p{font-size:14px;color:#526068;max-width:900px}.method a{font-weight:650;color:#203f3b}.method ul{padding-left:22px;font-size:14px;color:#526068}footer{border-top:1px solid #dddcd5;padding:24px 0 30px;font-size:13px;color:#526068}
@media(max-width:850px){.workspace{grid-template-columns:1fr}.hero{grid-template-columns:1fr 130px;gap:24px}.hero-art{height:105px}.checks{grid-template-columns:1fr}.check{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px 15px;align-items:start}.check h3,.check .pair-codes,.check .check-status,.check .check-detail{grid-column:1}.check .ratio{grid-column:2;grid-row:1/4;margin:0;font-size:28px}.export-panel{grid-template-columns:1fr;gap:18px}}
@media(max-width:480px){.wrap{padding-left:18px;padding-right:18px}.header-inner{gap:10px}.header-links{font-size:13px}.hero{grid-template-columns:1fr;padding-top:30px;gap:18px}.hero-art{height:50px;max-width:230px}.hero-art span{border-radius:30px 30px 5px 5px}.panel{padding:19px}.fields{grid-template-columns:1fr;gap:15px}.preview{padding:22px}.preview h3{font-size:27px}.check{padding:17px;display:block}.check .ratio{margin:10px 0;font-size:30px}.actions{align-items:stretch}.export-actions .button{width:100%}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.breadcrumb{padding-top:24px;font-size:13px;color:#526068}.breadcrumb a{font-weight:650}.hero{padding-top:30px}.related{margin:26px 0}.related ul{display:flex;flex-wrap:wrap;gap:12px 24px;padding-left:20px}.related p{font-size:14px;color:#526068}.site-footer .footer-inner{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap}.footer-brand{font-weight:800;font-size:19px;text-decoration:none;color:#202b32}.footer-inner p{margin:5px 0}.footer-links{display:flex;gap:14px 24px;flex-wrap:wrap;align-items:center}.footer-links a{font-weight:650}.site-footer{background:#f3f1eb}.method li{margin-bottom:8px}