*{box-sizing:border-box}html{--bg:#f4f5f6;--panel:#fff;--ink:#252b31;--muted:#59636c;--line:#d8dde1;--soft:#eef1f2;--accent:#236251;--button:#236251;--fail:#ae2d37;--review:#855300;--pass:#236251;color-scheme:light;scroll-behavior:smooth}html[data-theme=dark]{--bg:#15191d;--panel:#1c2227;--ink:#edf0f2;--muted:#b0bac2;--line:#3b454e;--soft:#252e36;--accent:#9cd6bc;--button:#276451;--fail:#ffa7ad;--review:#e7bd73;--pass:#9cd6bc;color-scheme:dark}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,select,textarea{font:inherit}button,input,select,a,summary{touch-action:manipulation}button,summary{cursor:pointer}button{min-height:44px}button:disabled{opacity:.5;cursor:default}a{color:var(--accent)}h1,h2,h3,p{margin-top:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}
header{padding:12px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);background:var(--panel)}.brand{display:flex;gap:10px;align-items:center;font-size:20px;font-weight:700;letter-spacing:-.03em;color:var(--ink);text-decoration:none}nav{display:flex;align-items:center;gap:24px}nav a{text-decoration:none;font-size:13px;color:var(--muted);padding-block:12px}nav a:hover,footer a:hover{text-decoration:underline}#theme{width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:transparent;color:var(--ink);font-size:22px}
main{max-width:1580px;padding:0 28px;margin:auto}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0}.page-heading h1{font-size:28px;line-height:1.2;letter-spacing:-.035em;margin:0}.page-heading p{font-size:12px;color:var(--muted);margin:7px 0 0}.page-heading>.file-button{flex-shrink:0}.workspace-grid{display:grid;grid-template-columns:minmax(340px,420px) minmax(0,1fr);align-items:start;gap:24px;min-width:0}.workspace{border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:18px;position:sticky;top:16px;scroll-margin-top:16px;min-width:0}.source-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.source-heading h2{font-size:14px;line-height:1.4;font-weight:650;margin:0}.source-heading>div{display:flex;align-items:center;gap:12px}.file-button{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:44px;cursor:pointer;color:var(--accent);font-size:12px;font-weight:550;line-height:1.4}.file-button input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.file-button:focus-within{outline:3px solid var(--accent);outline-offset:3px}.file-button:has(input:disabled){opacity:.5;cursor:default}.file-button input:disabled{cursor:default}
textarea,input[type=url],input[type=search],select{border:1px solid var(--line);border-radius:4px;background:var(--panel);color:var(--ink);padding:10px 12px;min-width:0}textarea{width:100%;height:280px;min-height:140px;resize:vertical;font:12px/1.7 ui-monospace,Consolas,monospace;background:var(--bg);tab-size:2;display:block}input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}.field{display:block;font-size:12px;font-weight:550;margin:18px 0 6px}.optional{color:var(--muted);font-weight:400}#target{display:block;width:100%;min-height:44px;font-size:13px}.small{font-size:12px;color:var(--muted);line-height:1.6}#source-note,#target-note{margin:8px 0 14px}.actions{display:flex;align-items:center;gap:8px 12px;flex-wrap:wrap;margin-top:18px}.primary,.secondary{min-height:44px;border-radius:4px;padding:10px 16px;font-size:13px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;line-height:1.4}.primary{border:1px solid var(--button);color:#fff;background:var(--button)}.primary:not(:disabled):hover{filter:brightness(1.12)}.secondary{border:1px solid var(--line);color:var(--ink);background:var(--panel)}.text-button{border:0;background:transparent;color:var(--muted);font-size:12px;padding:9px 0;min-height:44px}.text-button:not(:disabled):hover{text-decoration:underline}#results-link{font-size:12px;min-height:44px;display:inline-flex;align-items:center}#status,#error{font-size:12px;line-height:1.6;margin:12px 0 0;overflow-wrap:anywhere}#status{color:var(--muted)}#error{color:var(--fail);border-left:2px solid var(--fail);padding-left:10px}#status:empty,#error:empty{display:none}.source-scope{border-top:1px solid var(--line);margin-top:18px;padding-top:14px;font-size:12px;color:var(--muted)}.source-scope>p{margin-bottom:4px}.source-scope details p{margin:0 0 10px}.source-scope details a{display:inline-flex;align-items:center;min-height:44px}.source-scope summary,.limitations summary{min-height:44px;padding:10px 0;color:var(--ink);font-size:12px}
.report-workspace{min-width:0;border-top:2px solid var(--ink);padding-top:18px;scroll-margin-top:16px}#report-empty{padding:0 0 28px;border-bottom:1px solid var(--line)}#report-empty h2{font-size:19px;margin-bottom:8px}#report-empty p{font-size:13px;color:var(--muted);margin:0}.results{min-width:0;scroll-margin-top:16px}.result-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.result-heading>div:first-child{min-width:0}.result-heading h2{font-size:20px;line-height:1.3;letter-spacing:-.025em;margin:0 0 8px;overflow-wrap:anywhere}.result-heading p{font-size:12px;color:var(--muted);overflow-wrap:anywhere;margin:0}.export-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.export-actions button{padding:9px 12px;min-width:44px;font-size:12px}.summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:20px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.summary button{background:transparent;border:0;border-bottom:2px solid transparent;border-radius:0;padding:12px 8px;text-align:left;display:flex;align-items:baseline;gap:7px;color:var(--ink);min-width:0}.summary button[aria-pressed=true]{border-bottom-color:currentColor;background:var(--soft)}.summary b{font-size:21px;font-variant-numeric:tabular-nums;font-weight:650;line-height:1.3}.summary span{font-size:11px;color:var(--muted)}.summary .fail b{color:var(--fail)}.summary .review b{color:var(--review)}.summary .pass b{color:var(--pass)}.summary .not-run b{color:var(--muted)}
.report-tools{border-bottom:1px solid var(--line);margin-bottom:16px}.limitations{font-size:12px;color:var(--muted)}.limitations ul{margin:0 0 12px;padding-left:18px;line-height:1.7}.limitations li+li{margin-top:7px}.compare-panel{display:flex;gap:4px 14px;align-items:center;flex-wrap:wrap;padding-bottom:8px}.compare-panel #comparison{flex-basis:100%;margin:4px 0 0;font-size:12px;color:var(--ink);white-space:pre-line;overflow-wrap:anywhere}.compare-panel #comparison:empty{display:none}.filters{display:grid;grid-template-columns:minmax(110px,1fr) minmax(110px,1fr) minmax(130px,1.3fr);gap:10px;align-items:end;margin:18px 0 12px}.filters label{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted);min-width:0}.filters input,.filters select{width:100%;font-size:13px;min-height:44px}.filters select{padding-left:8px;padding-right:8px}#result-count{margin:0 0 12px}
#checks{border-top:1px solid var(--line)}.check{border-bottom:1px solid var(--line);background:transparent}.check summary{padding:16px 0;display:flex;gap:12px;align-items:flex-start;cursor:pointer;list-style:none}.check summary::-webkit-details-marker{display:none}.check summary::after{content:'+';font:20px/1.2 ui-monospace,Consolas,monospace;color:var(--muted);margin-left:auto;flex-shrink:0}.check[open] summary::after{content:'−'}.check summary>div{min-width:0}.check summary strong{font-size:14px;font-weight:600;overflow-wrap:anywhere;line-height:1.4}.check summary small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.badge{font-size:10px;line-height:1.6;padding:2px 5px;white-space:nowrap;border:1px solid currentColor;border-radius:3px;min-width:56px;text-align:center;flex-shrink:0}.badge.fail{color:var(--fail)}.badge.review{color:var(--review)}.badge.pass{color:var(--pass)}.badge.not-run{color:var(--muted)}.check-body{padding:0 0 18px;font-size:13px;color:var(--muted)}.check-body p{margin:0 0 10px;overflow-wrap:anywhere}.fix{color:var(--ink)}.evidence{list-style:none;padding:0;margin:12px 0 0}.evidence li{padding:12px;background:var(--soft);border-left:2px solid var(--line);margin-top:8px;overflow-wrap:anywhere}.evidence code{display:block;font:12px/1.6 ui-monospace,Consolas,monospace;white-space:pre-wrap;color:var(--ink)}.evidence span{display:block;font-size:12px;margin-top:5px;white-space:pre-wrap;overflow-wrap:anywhere}
footer{max-width:1580px;margin:32px auto 0;padding:20px 28px;border-top:1px solid var(--line);display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:12px}footer a{color:var(--muted);text-decoration:none}.skip{position:absolute;top:-100px;z-index:10;padding:12px;background:var(--panel)}.skip:focus{top:8px}.notice{padding:18px;background:var(--soft);border:1px solid var(--line);border-radius:4px}.prose{max-width:860px;padding-top:36px;padding-bottom:45px;line-height:1.8}.prose h1{font-size:clamp(32px,5vw,48px);line-height:1.2;letter-spacing:-.035em}.prose h2{font-size:24px;margin:30px 0 12px}.prose p,.prose li{color:var(--muted)}.prose pre{padding:16px;background:var(--soft);border-radius:4px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}.prose code{overflow-wrap:anywhere}.eyebrow{font-size:12px;color:var(--muted)}
@media(max-width:1100px){.workspace-grid{grid-template-columns:minmax(310px,360px) minmax(0,1fr);gap:18px}.result-heading{flex-direction:column;gap:12px}.summary button{flex-direction:column;gap:0}.filters{grid-template-columns:repeat(2,minmax(0,1fr))}.filters .search{grid-column:1/-1}}
@media(max-width:860px){header{padding:10px 20px}main{padding:0 20px}.workspace-grid{grid-template-columns:1fr;gap:24px}.workspace{position:static;padding:18px}.report-workspace{padding-top:16px}.result-heading{flex-direction:row}.summary button{flex-direction:row;gap:7px}textarea{height:210px}.source-scope{margin-top:14px}.page-heading{padding:20px 0}.page-heading h1{font-size:26px}.filters{grid-template-columns:minmax(110px,1fr) minmax(110px,1fr) minmax(130px,1.3fr)}.filters .search{grid-column:auto}}
@media(max-width:520px){header{padding:8px 14px}.brand{font-size:18px}.brand img{width:26px;height:26px}nav{gap:14px}nav a{font-size:12px}main{padding:0 12px}.page-heading{gap:10px;align-items:flex-start}.page-heading h1{font-size:25px}.page-heading p{font-size:11px;max-width:185px;margin-top:5px}.page-heading>.file-button{padding:10px;font-size:12px}.workspace{padding:14px}.source-heading{gap:8px}.source-heading>div{gap:12px}.source-heading h2{font-size:13px}textarea{height:180px;font-size:12px}.small{font-size:11px}.field{margin-top:14px}#source-note,#target-note{margin-bottom:10px}.actions{gap:6px 12px;margin-top:14px}.primary,.secondary{padding:10px 12px}.source-scope{font-size:11px;padding-top:12px}.result-heading{flex-direction:column;gap:12px}.result-heading h2{font-size:19px}.export-actions{width:100%}.export-actions button{flex:1}.summary{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:16px}.summary button{padding:10px 6px}.summary b{font-size:20px}.summary span{font-size:12px}.filters{grid-template-columns:repeat(2,minmax(0,1fr))}.filters .search{grid-column:1/-1}.compare-panel{gap:2px 10px}.compare-panel #comparison{font-size:12px}.check summary{gap:9px;padding:15px 0}.check summary strong{font-size:13px}.check summary small{font-size:11px}.badge{font-size:10px;min-width:52px}.check-body{font-size:12px}.evidence li{padding:10px}.evidence code,.evidence span{font-size:11px}footer{padding:18px 14px;gap:20px}.prose{padding-top:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
#header-feedback:has(#error:not(:empty)){margin:-8px 0 20px}
header,nav,.page-heading{flex-wrap:wrap}
nav{max-width:100%}
#theme{flex-shrink:0;display:grid;place-items:center;width:2em;height:2em;min-width:44px;min-height:44px;padding:0;line-height:1}
.page-heading>div{min-width:0;flex:1 1 12rem}
.page-heading>.file-button{max-width:100%}
.filters{grid-template-columns:repeat(auto-fit,minmax(min(100%,10em),1fr))}