/* PAEval design system — tokens first, components after. */
:root{
  --bg:#f7f7f5;--surface:#ffffff;--surface-2:#f1f1ee;--ink:#14161a;--ink-2:#3b3f47;--muted:#6b707a;--line:#e3e3df;--line-2:#d3d3cd;
  --accent:#2f4bd8;--accent-ink:#ffffff;--accent-soft:#eef1fd;--focus:#2f4bd8;
  --s1:#4f46e5;--s2:#0f8b7e;--s3:#d9590f;--s1-soft:#ecebfd;--s2-soft:#e2f4f1;--s3-soft:#fdeee4;
  --ok:#17803d;--ok-soft:#e6f4ea;--ok-strong:#0f5f2c;--warn:#a35f00;--warn-soft:#fdf2dc;--bad:#b42318;--bad-soft:#fde8e6;
  --info:#40639e;--info-soft:#e8eef8;--neutral:#6b707a;--neutral-soft:#efefec;--stale:#7a5c99;--stale-soft:#f1ecf7;
  --heat-0:#f4f4f1;--radius:10px;--radius-sm:6px;--shadow:0 1px 2px rgba(16,18,24,.04),0 1px 1px rgba(16,18,24,.03);
  --font:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f1115;--surface:#161920;--surface-2:#1c2029;--ink:#eceef2;--ink-2:#c6cad3;--muted:#8d93a0;--line:#262b35;--line-2:#333a46;
  --accent:#8199ff;--accent-ink:#0f1115;--accent-soft:#1d2440;--focus:#8199ff;
  --s1:#8b85ff;--s2:#3cc4b3;--s3:#ff8c4a;--s1-soft:#25234a;--s2-soft:#13332f;--s3-soft:#3a2416;
  --ok:#5bc27f;--ok-soft:#15301f;--ok-strong:#8be0a8;--warn:#e8a93a;--warn-soft:#352812;--bad:#ff7b6e;--bad-soft:#3a1915;
  --info:#8fb0e8;--info-soft:#1a2539;--neutral:#8d93a0;--neutral-soft:#232731;--stale:#b79ae0;--stale-soft:#2a2238;
  --heat-0:#1c2029;--shadow:none;color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0f1115;--surface:#161920;--surface-2:#1c2029;--ink:#eceef2;--ink-2:#c6cad3;--muted:#8d93a0;--line:#262b35;--line-2:#333a46;
  --accent:#8199ff;--accent-ink:#0f1115;--accent-soft:#1d2440;--focus:#8199ff;
  --s1:#8b85ff;--s2:#3cc4b3;--s3:#ff8c4a;--s1-soft:#25234a;--s2-soft:#13332f;--s3-soft:#3a2416;
  --ok:#5bc27f;--ok-soft:#15301f;--ok-strong:#8be0a8;--warn:#e8a93a;--warn-soft:#352812;--bad:#ff7b6e;--bad-soft:#3a1915;
  --info:#8fb0e8;--info-soft:#1a2539;--neutral:#8d93a0;--neutral-soft:#232731;--stale:#b79ae0;--stale-soft:#2a2238;
  --heat-0:#1c2029;--shadow:none;color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font:14.5px/1.55 var(--font);font-feature-settings:"cv11","ss01";-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:2px}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:3px}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.015em;margin:0}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.08;font-weight:700;letter-spacing:-.03em}
h2{font-size:22px;line-height:1.25;font-weight:650}
h3{font-size:16px;line-height:1.35;font-weight:650}
p{margin:0 0 .8em}
small,.small{font-size:12.5px}
.muted{color:var(--muted)}
.num,td.num,th.num{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
code,.mono{font-family:var(--mono);font-size:.88em}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:var(--surface);padding:8px 12px;border-radius:6px}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
@media(max-width:640px){.wrap{padding:0 16px}}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:28px;height:58px}
.brand{display:flex;align-items:center;gap:9px;font-weight:750;font-size:17px;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;grid-template-columns:repeat(3,5px);align-items:end;gap:2px;height:16px}
.brand-mark i{display:block;width:5px;border-radius:1.5px;background:var(--ink)}
.brand-mark i:nth-child(1){height:7px;opacity:.45}.brand-mark i:nth-child(2){height:11px;opacity:.7}.brand-mark i:nth-child(3){height:16px;background:var(--accent)}
.nav{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--ink-2);padding:7px 11px;border-radius:7px;font-weight:520;white-space:nowrap;font-size:14px}
.nav a:hover{background:var(--surface-2);text-decoration:none}
.nav a[aria-current="page"]{color:var(--ink);background:var(--surface-2)}
.header-meta{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);white-space:nowrap}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block}
@media(max-width:900px){.header-meta{display:none}.site-header .wrap{gap:14px}}

/* page scaffolding */
main{padding:28px 0 64px}
.page-head{padding:20px 0 22px}
.eyebrow{font-size:11.5px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.lede{font-size:17px;line-height:1.55;color:var(--ink-2);max-width:760px;margin-top:12px}
.section{margin-top:44px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:14px;flex-wrap:wrap}
.section-head p{margin:6px 0 0;color:var(--muted);max-width:760px}
.section-link{font-weight:550;white-space:nowrap}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.card.flush{padding:0;overflow:hidden}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:16px 18px 12px;border-bottom:1px solid var(--line)}
.card-head h3{font-size:15px}
.card-body{padding:14px 18px}
.card-foot{padding:10px 18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap}
.callout{border:1px solid var(--line);border-left:3px solid var(--accent);background:var(--surface);padding:14px 16px;border-radius:var(--radius-sm);color:var(--ink-2)}
.callout.warn{border-left-color:var(--warn)}
.callout strong{color:var(--ink)}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:40px;align-items:end;padding:18px 0 8px}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:22px}}
.hero h1 em{font-style:normal;color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden}
.stat{padding:14px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat:nth-child(2n){border-right:0}.stat:nth-last-child(-n+2){border-bottom:0}
.stat b{display:block;font-size:26px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat span{font-size:12.5px;color:var(--muted)}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
@media(max-width:900px){.principles{grid-template-columns:1fr}}
.principle{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--ink-2)}
.principle b{display:block;color:var(--ink);font-size:14px;margin-bottom:2px}
.principle .ico{flex:0 0 28px;height:28px;border-radius:8px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:700;font-size:13px}

/* toolbar + forms */
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}
.toolbar .grow{flex:1 1 220px}
.input,.select{height:36px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);border-radius:8px;padding:0 11px;font:inherit;font-size:13.5px;min-width:0}
.input{width:100%}
.select{padding-right:28px;appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 15px) 15px,calc(100% - 10px) 15px;background-size:5px 5px;background-repeat:no-repeat}
.check{display:inline-flex;gap:7px;align-items:center;font-size:13.5px;color:var(--ink-2);white-space:nowrap}
.count{font-size:12.5px;color:var(--muted);margin-left:auto;white-space:nowrap}
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:8px;padding:2px;background:var(--surface);gap:2px;flex-wrap:wrap}
.seg button{border:0;background:transparent;color:var(--ink-2);font:inherit;font-size:13px;padding:5px 11px;border-radius:6px;cursor:pointer}
.seg button[aria-selected="true"],.seg button[aria-pressed="true"]{background:var(--ink);color:var(--surface)}
.btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 13px;border-radius:8px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:inherit;font-size:13.5px;font-weight:550;cursor:pointer}
.btn:hover{text-decoration:none;background:var(--surface-2)}
.btn.primary{background:var(--ink);color:var(--surface);border-color:var(--ink)}

/* tables */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:13.5px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
thead th{position:sticky;top:0;background:var(--surface);z-index:2;font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;border-bottom:1px solid var(--line-2)}
tbody tr:hover td{background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
th button.sort{all:unset;cursor:pointer;display:inline-flex;gap:4px;align-items:center}
th button.sort::after{content:"↕";opacity:.35;font-size:11px}
th[aria-sort="ascending"] button.sort::after{content:"↑";opacity:1}
th[aria-sort="descending"] button.sort::after{content:"↓";opacity:1}
th button.sort:focus-visible{outline:2px solid var(--focus)}
.sticky-col{position:sticky;left:0;background:var(--surface);z-index:1}
thead .sticky-col{z-index:3}
tbody tr:hover .sticky-col{background:var(--surface-2)}
.rank{color:var(--muted);font-variant-numeric:tabular-nums;width:36px}
.pname{font-weight:600;color:var(--ink)}
.pname:hover{color:var(--accent)}
.psub{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:1px}
.empty-row td{text-align:center;color:var(--muted);padding:28px}
.index-table td{height:56px}
.score-cell{min-width:118px}
.score-cell .v{font-weight:650;font-variant-numeric:tabular-nums}
.score-cell .meta{display:block;font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.na{color:var(--muted);font-size:12.5px}
.minibar{display:block;height:4px;border-radius:2px;background:var(--surface-2);margin-top:5px;overflow:hidden;max-width:110px}
.minibar i{display:block;height:100%;border-radius:2px}
.src1 .minibar i,.bar.s1{background:var(--s1)}.src2 .minibar i,.bar.s2{background:var(--s2)}.src3 .minibar i,.bar.s3{background:var(--s3)}
.src-tag{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.src-tag::before{content:"";width:8px;height:8px;border-radius:2px;background:currentColor}
.src-tag.s1{color:var(--s1)}.src-tag.s2{color:var(--s2)}.src-tag.s3{color:var(--s3)}

/* chips */
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:550;padding:2px 8px;border-radius:999px;background:var(--neutral-soft);color:var(--ink-2);white-space:nowrap;line-height:18px}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--neutral)}
.chip.plain::before{display:none}
.st-verified{background:var(--ok-soft);color:var(--ok-strong)}.st-verified::before{background:var(--ok-strong);box-shadow:0 0 0 2px color-mix(in srgb,var(--ok) 35%,transparent)}
.st-documented{background:var(--ok-soft);color:var(--ok)}.st-documented::before{background:var(--ok)}
.st-partial{background:var(--info-soft);color:var(--info)}.st-partial::before{background:var(--info)}
.st-limited{background:var(--warn-soft);color:var(--warn)}.st-limited::before{background:var(--warn)}
.st-planned{background:var(--info-soft);color:var(--info)}.st-planned::before{background:transparent;border:1.5px solid var(--info);width:5px;height:5px}
.st-stale{background:var(--stale-soft);color:var(--stale)}.st-stale::before{background:var(--stale)}
.st-unsupported{background:var(--bad-soft);color:var(--bad)}.st-unsupported::before{background:var(--bad)}
.st-undisclosed{background:var(--neutral-soft);color:var(--muted)}.st-undisclosed::before{background:transparent;border:1.5px dashed var(--neutral);width:5px;height:5px}
.st-unknown{background:var(--neutral-soft);color:var(--muted)}.st-unknown::before{background:var(--line-2)}
.tier-independent{background:var(--ok-soft);color:var(--ok-strong)}.tier-independent::before{background:var(--ok-strong)}
.tier-official{background:var(--accent-soft);color:var(--accent)}.tier-official::before{background:var(--accent)}
.tier-reported{background:var(--stale-soft);color:var(--stale)}.tier-reported::before{background:var(--stale)}
.tier-unresolved{background:var(--neutral-soft);color:var(--muted)}.tier-unresolved::before{background:var(--line-2)}

/* matrix */
.matrix td,.matrix th{padding:6px;text-align:center}
.matrix th.rowh,.matrix td.rowh{text-align:left;padding-left:12px}
.matrix thead th.vert{height:132px;vertical-align:bottom;padding-bottom:10px}
.matrix thead th.vert span{writing-mode:vertical-rl;transform:rotate(180deg);text-transform:none;letter-spacing:0;font-size:12px;color:var(--ink-2);font-weight:550}
.cell{display:inline-block;width:26px;height:22px;border-radius:5px;border:1px solid transparent;vertical-align:middle}
.cell.st-verified{background:var(--ok-strong);border-color:var(--ok-strong)}
.cell.st-documented{background:color-mix(in srgb,var(--ok) 70%,var(--surface))}
.cell.st-partial{background:color-mix(in srgb,var(--info) 45%,var(--surface))}
.cell.st-limited{background:color-mix(in srgb,var(--warn) 55%,var(--surface))}
.cell.st-planned{background:var(--surface);border:1.5px solid var(--info)}
.cell.st-stale{background:color-mix(in srgb,var(--stale) 45%,var(--surface))}
.cell.st-unsupported{background:var(--bad)}
.cell.st-undisclosed{background:repeating-linear-gradient(135deg,var(--neutral-soft) 0 3px,var(--surface) 3px 6px);border-color:var(--line-2)}
.cell.st-unknown{background:var(--neutral-soft);border-color:var(--line)}
.cell.st-none{background:transparent;border:1px dashed var(--line-2)}
.cell.ind{box-shadow:inset 0 0 0 2px var(--surface),0 0 0 1.5px var(--ok-strong)}
.legend{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:12.5px;color:var(--ink-2);align-items:center}
.legend span{display:inline-flex;gap:6px;align-items:center}
.legend .cell{width:16px;height:14px;border-radius:3px}
.heat td.h{font-variant-numeric:tabular-nums;font-size:12.5px;text-align:center;min-width:42px;padding:7px 4px}
.heat th.vert{height:150px}
.ev{font-size:9.5px;color:var(--muted);display:block;line-height:1;margin-top:1px;letter-spacing:.03em}

/* charts */
.chart{width:100%;height:auto;display:block;overflow:visible}
.chart text{fill:var(--ink-2);font:12px var(--font)}
.chart .lbl{fill:var(--ink);font-weight:550}
.chart .val{font-variant-numeric:tabular-nums;fill:var(--ink);font-weight:600}
.chart .axis{stroke:var(--line);stroke-width:1}
.chart .grid{stroke:var(--line);stroke-dasharray:2 3}
.chart .tick{fill:var(--muted);font-size:11px}
.chart .track{fill:var(--surface-2)}
.chart .ci{stroke:var(--ink-2);stroke-width:1.5}
.chart .bar1{fill:var(--s1)}.chart .bar2{fill:var(--s2)}.chart .bar3{fill:var(--s3)}

/* product page */
.phead{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:end}
@media(max-width:800px){.phead{grid-template-columns:1fr}}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;align-items:center}
.kv{display:grid;grid-template-columns:140px minmax(0,1fr);gap:8px 16px;font-size:13.5px}
.kv dt{color:var(--muted)}.kv dd{margin:0}
.layout-side{display:grid;grid-template-columns:220px minmax(0,1fr);gap:32px;align-items:start}
.toc{position:sticky;top:78px;font-size:13px;display:flex;flex-direction:column;gap:2px}
.toc a{color:var(--ink-2);padding:5px 10px;border-radius:6px;display:flex;justify-content:space-between;gap:8px}
.toc a:hover{background:var(--surface-2);text-decoration:none}
.toc .n{color:var(--muted);font-variant-numeric:tabular-nums}
@media(max-width:980px){.layout-side{grid-template-columns:minmax(0,1fr)}.toc{display:none}}
.fact{display:grid;grid-template-columns:200px minmax(0,1fr);gap:6px 18px;padding:14px 18px;border-bottom:1px solid var(--line)}
.fact:last-child{border-bottom:0}
@media(max-width:700px){.fact{grid-template-columns:1fr}}
.fact .topic{font-weight:600;font-size:13.5px}
.fact .chips{display:flex;flex-wrap:wrap;gap:5px;margin-top:6px}
.fact .val{color:var(--ink);margin:0 0 6px}
.fact .cond{font-size:12.5px;color:var(--muted);margin:2px 0}
.fact .srcs{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:12.5px;margin-top:6px}
.fact .raw{font-size:11.5px;color:var(--muted);margin-top:4px}
.evbar{display:flex;height:8px;border-radius:4px;overflow:hidden;background:var(--surface-2);margin:8px 0}
.evbar i{display:block;height:100%}
.evbar .independent{background:var(--ok-strong)}.evbar .official{background:var(--accent)}.evbar .reported{background:var(--stale)}.evbar .unresolved{background:var(--line-2)}

/* lists, prose */
.prose{max-width:820px}
.prose h2{margin:36px 0 10px}.prose h3{margin:24px 0 8px}
.prose p,.prose li{color:var(--ink-2)}
.prose ul{padding-left:20px}
.prose table{margin:12px 0 18px}
.def-table td:first-child{white-space:nowrap;font-weight:600}
.timeline{display:grid;gap:14px}
.timeline .entry{display:grid;grid-template-columns:110px minmax(0,1fr);gap:14px}
.timeline time{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:2px}
.timeline ul{margin:6px 0 0;padding-left:18px;color:var(--ink-2)}
details.more summary{cursor:pointer;color:var(--accent);font-weight:550;font-size:13px}
.tag{display:inline-block;font-size:11.5px;padding:1px 7px;border-radius:5px;background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line);white-space:nowrap}
.compare-pick{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
@media(max-width:800px){.compare-pick{grid-template-columns:repeat(2,minmax(0,1fr))}}
.compare-table td{vertical-align:top;min-width:180px}
.compare-table th[scope="row"]{color:var(--ink-2);font-weight:600;font-size:13px;text-transform:none;letter-spacing:0;position:static;background:var(--surface)}
.hidden{display:none!important}

@media(max-width:640px){.hide-sm{display:none}.toolbar .select{flex:1 1 40%}}
/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--surface);padding:32px 0 40px;font-size:13px;color:var(--muted)}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
@media(max-width:800px){.site-footer .cols{grid-template-columns:1fr 1fr}}
.site-footer h4{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2);margin-bottom:10px}
.site-footer a{color:var(--ink-2);display:block;margin:4px 0}
@media print{.site-header,.site-footer,.toolbar,.toc{display:none}body{background:#fff}}
.faq{display:grid;gap:10px}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:baseline}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--muted);font-weight:600}
.faq details[open] summary::after{content:"–"}
.faq h3{font-size:16px}
.faq p{color:var(--ink-2);max-width:900px}
.glance{color:var(--ink-2);line-height:1.6}
.tag{max-width:100%;overflow:hidden;text-overflow:ellipsis}
.card .tag{white-space:normal}
.g-split{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}
@media(max-width:900px){.g-split{grid-template-columns:minmax(0,1fr)}}
.grid>*{min-width:0}
#capability-detail table{table-layout:fixed;width:100%}
#capability-detail td,#capability-detail th{overflow-wrap:anywhere}
.kv dd,.kv dt,.fact,.srcs a{overflow-wrap:anywhere}