/* ============================================================================
   MatchPrior — design system  ·  "scientific / editorial paper"
   Light warm-paper canvas · Space Mono = data/instrument voice ·
   Source Serif 4 = prose · ONE plot-ink accent reserved for outcomes.
   The reliability diagram (dots on the 45° line) is the brand device.
   Offline: fonts vendored in assets/fonts, no CDN.
   ========================================================================== */

/* ----------------------------------------------------------------- fonts -- */
@font-face{font-family:'Space Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('fonts/spacemono-400.woff2') format('woff2');}
@font-face{font-family:'Space Mono';font-style:normal;font-weight:700;font-display:swap;
  src:url('fonts/spacemono-700.woff2') format('woff2');}
@font-face{font-family:'Space Mono';font-style:italic;font-weight:400;font-display:swap;
  src:url('fonts/spacemono-italic.woff2') format('woff2');}
@font-face{font-family:'Source Serif 4';font-style:normal;font-weight:400;font-display:swap;
  src:url('fonts/sourceserif-400.woff2') format('woff2');}
@font-face{font-family:'Source Serif 4';font-style:italic;font-weight:400;font-display:swap;
  src:url('fonts/sourceserif-italic.woff2') format('woff2');}

/* ---------------------------------------------------------------- tokens -- */
:root{
  --paper:#F7F6F1; --paper-2:#FCFBF8; --card:#FFFFFF;
  --ink:#15171C; --ink-soft:#34373F; --muted:#5C606B; --faint:#8B8F99;
  --rule:#DEDBD1; --rule-strong:#C7C3B6;
  --accent:#2233D6; --accent-bright:#3447F0; --accent-soft:rgba(34,51,214,.09);
  --accent-line:rgba(34,51,214,.30);
  --pos:#16785A;            /* "on the line" / observed — used sparingly */
  --warn:#8A5A00;           /* compliance caution on light */
  /* dark code panel */
  --term:#16181F; --term-2:#1d2029; --term-line:#2b2f3a; --term-txt:#cfd3de;
  --t-key:#9db4ff; --t-str:#9bd6a6; --t-num:#e2b673; --t-com:#6b7180;
  --t-meth:#cba6f0; --t-punc:#7d8290;

  --mono:'Space Mono', ui-monospace, Menlo, Consolas, monospace;
  --serif:'Source Serif 4', Georgia, 'Times New Roman', serif;

  --wrap:1140px; --prose:680px; --nav-h:70px;
  --r-sm:3px; --r:4px; --r-lg:6px;
  --ease:cubic-bezier(.22,.61,.36,1); --dur:.16s;
}

/* ------------------------------------------------------------------ base -- */
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth;}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--serif); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:inherit; text-decoration:none;}
::selection{background:var(--accent); color:#fff;}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:2px;}
img,svg{display:block; max-width:100%;}
.wrap{max-width:var(--wrap); margin:0 auto; padding:0 32px;}
@media(max-width:560px){ .wrap{padding:0 20px;} }

/* mono/data voice helpers */
.mono{font-family:var(--mono);}
.num{font-family:var(--mono); font-variant-numeric:tabular-nums; letter-spacing:-.01em;}
.muted{color:var(--muted);} .faint{color:var(--faint);}

/* ---------------------------------------------------------------- header -- */
.site-head{position:sticky; top:0; z-index:40; background:color-mix(in srgb,var(--paper) 88%, transparent);
  -webkit-backdrop-filter:saturate(1.1) blur(8px); backdrop-filter:saturate(1.1) blur(8px);
  border-bottom:1px solid var(--rule);}
.site-head__in{max-width:var(--wrap); margin:0 auto; padding:0 32px; height:var(--nav-h);
  display:flex; align-items:center; justify-content:space-between;}
@media(max-width:560px){ .site-head__in{padding:0 20px;} }
.brand{display:flex; align-items:center; gap:11px;}
.brand__mark{width:26px; height:26px; flex:none;}
.brand__txt{font-family:var(--mono); font-weight:700; font-size:18px; letter-spacing:-.04em; color:var(--ink);}
.brand__txt span{color:var(--accent);}
.nav{display:flex; align-items:center; gap:26px;
  font-family:var(--mono); font-size:12.5px; letter-spacing:.02em; text-transform:lowercase;}
.nav a{color:var(--muted); transition:color var(--dur);}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink);}
.nav__sep{width:1px; height:18px; background:var(--rule-strong);}
@media(max-width:720px){ .nav .collapse{display:none;} }

/* ---------------------------------------------------------------- buttons -- */
.btn{display:inline-flex; align-items:center; gap:8px; font-family:var(--mono);
  font-size:13px; letter-spacing:.01em; padding:11px 19px; border-radius:var(--r);
  border:1px solid var(--ink); transition:all var(--dur) var(--ease); cursor:pointer; background:none;}
.btn--ink{background:var(--ink); color:var(--paper);}
.btn--ink:hover{background:var(--accent); border-color:var(--accent);}
.btn--line{color:var(--ink); border-color:var(--rule-strong); background:transparent;}
.btn--line:hover{border-color:var(--ink);}
.btn--key{padding:8px 15px; font-size:12.5px;}
.btn--lg{padding:13px 23px; font-size:14px;}

/* --------------------------------------------------------------- sections -- */
.section{padding:84px 0;}
.section--tight{padding:54px 0;}
.section--hair{border-top:1px solid var(--rule);}
.eyebrow{font-family:var(--mono); font-size:11.5px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--muted); display:inline-flex; align-items:center; gap:11px;}
.eyebrow::before{content:""; width:24px; height:1px; background:var(--rule-strong);}
.eyebrow--c{justify-content:center;}

h1,h2,h3{font-family:var(--mono); font-weight:700; letter-spacing:-.035em; line-height:1.05; margin:0;}
h1{font-size:clamp(40px,6.2vw,66px);}
h2{font-size:clamp(28px,3.6vw,40px); letter-spacing:-.03em;}
h3{font-size:18px; letter-spacing:-.02em;}
.lead{font-family:var(--serif); font-size:clamp(17px,1.4vw,19px); line-height:1.56; color:var(--ink-soft); margin:0;}
.lead em{font-style:italic;}
.measure{max-width:54ch;}
.center{text-align:center;} .center .eyebrow{justify-content:center;}
.fineprint{font-family:var(--mono); font-size:11px; color:var(--muted); letter-spacing:.01em; line-height:1.65;}
.accent{color:var(--accent);}
.hl{position:relative; color:var(--accent);}
.hl::after{content:""; position:absolute; left:-1px; right:-2px; bottom:6px; height:10px; background:var(--accent-soft); z-index:-1;}

/* ------------------------------------------------------------------ hero -- */
.hero{display:grid; grid-template-columns:1.04fr 1fr; gap:56px; align-items:center; padding:78px 0 34px;}
@media(max-width:920px){ .hero{grid-template-columns:1fr; gap:40px; padding:52px 0 24px;} }
.btn-row{display:flex; gap:14px; align-items:center; flex-wrap:wrap;}

/* ------------------------------------------------- reliability diagram (plot) */
.plot{background:var(--card); border:1px solid var(--rule); border-radius:var(--r-lg);
  padding:22px 22px 16px; box-shadow:0 1px 0 #fff inset, 0 22px 46px -30px rgba(20,22,28,.28);}
.plot__head{display:flex; justify-content:space-between; align-items:baseline; margin-bottom:6px;}
.plot__title{font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--muted);}
.plot__n{font-family:var(--mono); font-size:11px; color:var(--ink);}
.plot svg{width:100%; height:auto;}
.grid{stroke:var(--rule); stroke-width:1;}
.ax{stroke:var(--rule-strong); stroke-width:1;}
.axlab{font-family:var(--mono); font-size:9.5px; fill:var(--muted);}
.axtitle{font-family:var(--mono); font-size:10px; fill:var(--ink-soft); letter-spacing:.06em; text-transform:uppercase;}
.perfect{stroke:var(--ink); stroke-width:1.4; stroke-dasharray:4 4;}
.perfectlab{font-family:var(--mono); font-size:9.5px; fill:var(--ink-soft);}
.pt{fill:var(--accent); stroke:var(--card); stroke-width:1.5;}
.pt-ring{fill:none; stroke:var(--accent); stroke-width:1.3; opacity:.32;}
.ptlab{font-family:var(--mono); font-size:11px; font-weight:700; fill:var(--ink);}
.plot__cap{font-family:var(--mono); font-size:10px; color:var(--muted); margin-top:12px; line-height:1.65;
  border-top:1px solid var(--rule); padding-top:10px;}

/* ----------------------------------------------------- tier ticker / metrics */
.ticker{border-top:1px solid var(--ink); border-bottom:1px solid var(--rule);
  display:grid; grid-template-columns:repeat(3,1fr);}
.tk{padding:22px 4px; display:flex; flex-direction:column; gap:6px;}
.tk + .tk{border-left:1px solid var(--rule);}
.tk__k{font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted);}
.tk__v{font-family:var(--mono); font-weight:700; font-size:clamp(26px,3.4vw,34px); letter-spacing:-.03em;}
.tk__v small{font-size:13px; font-weight:400; color:var(--muted); letter-spacing:0;}
.tk--hi .tk__v{color:var(--accent);}
.tk__note{font-family:var(--serif); font-size:13.5px; color:var(--muted);}
@media(max-width:680px){ .ticker{grid-template-columns:1fr;} .tk + .tk{border-left:none; border-top:1px solid var(--rule);} }

.metric-row{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
.metric{border-left:2px solid var(--accent-line); padding:4px 0 4px 16px;}
.metric__k{font-family:var(--mono); font-size:11px; letter-spacing:.04em; text-transform:uppercase; color:var(--muted); display:block;}
.metric__v{font-family:var(--mono); font-weight:700; font-size:26px; letter-spacing:-.03em; display:block; margin-top:3px;}
.metric__note{font-family:var(--mono); font-size:10.5px; color:var(--faint); display:block; margin-top:2px;}
@media(max-width:620px){ .metric-row{grid-template-columns:1fr 1fr;} }

/* -------------------------------------------------------------- grid/cards -- */
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:38px;}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
@media(max-width:860px){ .grid-2{grid-template-columns:1fr;} .grid-3{grid-template-columns:1fr;} }
.section-head{max-width:64ch;}
.section-head h2{margin-top:14px;} .section-head .lead{margin-top:14px;}

.panel{background:var(--paper-2); border:1px solid var(--rule); border-radius:var(--r-lg); padding:30px;}
.card{background:var(--paper-2); border:1px solid var(--rule); border-radius:var(--r-lg); padding:24px; transition:border-color var(--dur), transform var(--dur);}
.card:hover{border-color:var(--rule-strong);}
.card__ix{font-family:var(--mono); font-size:13px; color:var(--accent); width:34px; height:34px; display:grid; place-items:center;
  border:1px solid var(--accent-line); border-radius:var(--r-sm); background:var(--accent-soft); margin-bottom:16px;}
.card h3{margin-bottom:8px;} .card p{font-size:15px; color:var(--ink-soft); margin:0;}

/* ------------------------------------------------------------ steps / list -- */
.steps{display:grid; gap:20px; counter-reset:s;}
.step{display:grid; grid-template-columns:auto 1fr; gap:16px; align-items:start;}
.step__n{counter-increment:s; width:30px; height:30px; flex:none; display:grid; place-items:center; border-radius:50%;
  border:1px solid var(--accent-line); background:var(--accent-soft); color:var(--accent);
  font-family:var(--mono); font-size:12px; font-weight:700;}
.step__n::before{content:counter(s);}
.step h3{font-size:16px;} .step p{font-size:15px; color:var(--ink-soft); margin:3px 0 0;}

/* ---------------------------------------------------------------- callouts -- */
.callout{border:1px solid var(--rule); border-left:3px solid var(--accent); background:var(--paper-2);
  border-radius:var(--r); padding:16px 18px; font-size:15px; color:var(--ink-soft);}
.callout strong{color:var(--ink); font-weight:400; font-family:var(--mono); font-size:13.5px;}
.callout--warn{border-left-color:var(--warn);}
.chip{font-family:var(--mono); font-size:.86em; background:var(--accent-soft); border:1px solid var(--accent-line);
  color:var(--accent); padding:1px 6px; border-radius:var(--r-sm); white-space:nowrap;}

/* ------------------------------------------------------------ code (dark) --- */
.code{background:var(--term); border:1px solid var(--term-line); border-radius:var(--r-lg); overflow:hidden;
  box-shadow:0 22px 46px -34px rgba(20,22,28,.5);}
.code__bar{display:flex; align-items:center; gap:10px; padding:10px 14px; background:var(--term-2); border-bottom:1px solid var(--term-line);}
.code__dots{display:flex; gap:6px;} .code__dots i{width:9px; height:9px; border-radius:50%; background:#3a3f4d; display:block;}
.code__title{font-family:var(--mono); font-size:11px; color:#8b90a0; margin-left:4px;}
.code__tag{margin-left:auto; font-family:var(--mono); font-size:10px; letter-spacing:.08em; text-transform:uppercase; color:#6f7484;}
.code pre{margin:0; padding:16px 16px; overflow-x:auto;}
.code code{font-family:var(--mono); font-size:12.5px; line-height:1.7; color:var(--term-txt);}
.tok-key{color:var(--t-key);} .tok-str{color:var(--t-str);} .tok-num{color:var(--t-num);}
.tok-bool,.tok-null{color:var(--t-num);} .tok-comment{color:var(--t-com); font-style:italic;}
.tok-method{color:var(--t-meth);} .tok-url{color:var(--term-txt);} .tok-flag{color:var(--t-key);}
.tok-punct{color:var(--t-punc);}

/* ---------------------------------------------------------------- pricing --- */
.pricing{display:grid; grid-template-columns:repeat(4,1fr); gap:16px;}
@media(max-width:980px){ .pricing{grid-template-columns:1fr 1fr;} }
@media(max-width:560px){ .pricing{grid-template-columns:1fr;} }
.price{background:var(--paper-2); border:1px solid var(--rule); border-radius:var(--r-lg); padding:22px; display:flex; flex-direction:column; gap:12px;}
.price--feat{border-color:var(--accent); box-shadow:0 0 0 1px var(--accent) inset;}
.price__name{font-family:var(--mono); font-size:13px; letter-spacing:.02em; display:flex; align-items:center; gap:8px;}
.ribbon{font-family:var(--mono); font-size:9.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--accent);
  background:var(--accent-soft); border:1px solid var(--accent-line); border-radius:99px; padding:2px 7px;}
.price__amt{font-family:var(--mono); font-weight:700; font-size:34px; letter-spacing:-.03em;}
.price__amt small{font-size:13px; font-weight:400; color:var(--muted);}
.price__lim{font-family:var(--mono); font-size:12px; color:var(--accent);}
.price__desc{font-size:13.5px; color:var(--muted); min-height:2.6em;}
.price ul{list-style:none; margin:6px 0 0; padding:0; display:grid; gap:7px;}
.price li{font-size:13.5px; color:var(--ink-soft); padding-left:18px; position:relative;}
.price li::before{content:""; position:absolute; left:0; top:9px; width:7px; height:7px; border-radius:50%; background:var(--accent); opacity:.5;}
.note-row{display:flex; flex-wrap:wrap; gap:8px 22px; font-family:var(--mono); font-size:11.5px; color:var(--muted);}

.table-wrap{overflow-x:auto; border:1px solid var(--rule); border-radius:var(--r-lg);}
table.compare{width:100%; border-collapse:collapse; font-size:14px; min-width:640px;}
table.compare th,table.compare td{padding:13px 16px; border-bottom:1px solid var(--rule); text-align:left;}
table.compare thead th{font-family:var(--mono); font-size:11px; letter-spacing:.04em; text-transform:uppercase; color:var(--muted); background:var(--paper-2);}
table.compare .col__price{font-family:var(--mono); color:var(--ink); text-transform:none;}
table.compare .col__price small{display:block; font-weight:400; color:var(--muted);}
table.compare td.cell{text-align:center; font-family:var(--mono); font-variant-numeric:tabular-nums; color:var(--ink-soft);}
table.compare th.col{text-align:center;}
table.compare .rowgrp td{font-family:var(--mono); font-size:10.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--muted); background:var(--paper);}
table.compare .is-feat{background:var(--accent-soft);}
.yes{color:var(--accent); font-weight:700;} .no{color:var(--faint);}

/* -------------------------------------------------------------------- faq --- */
.faq{display:grid; gap:12px;}
.faq details{border:1px solid var(--rule); border-radius:var(--r); background:var(--paper-2); padding:14px 18px;}
.faq details[open]{border-color:var(--rule-strong);}
.faq summary{cursor:pointer; list-style:none; font-family:var(--mono); font-size:14px; color:var(--ink);
  display:flex; justify-content:space-between; gap:14px; align-items:center;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+"; font-family:var(--mono); color:var(--muted); transition:transform var(--dur);}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq p{font-size:14.5px; color:var(--ink-soft); margin:12px 0 0;}

/* prose (docs/quickstart) */
.container--prose{max-width:var(--prose);}
.prose p{font-size:16px; color:var(--ink-soft);}
.prose h2{margin-top:40px;} .prose h3{margin-top:28px;}

/* ----------------------------------------------------------------- footer --- */
.site-foot{border-top:1px solid var(--rule); background:var(--paper-2); margin-top:20px;}
.site-foot__in{max-width:var(--wrap); margin:0 auto; padding:48px 32px 30px;}
@media(max-width:560px){ .site-foot__in{padding:40px 20px 26px;} }
.foot-grid{display:grid; grid-template-columns:1.6fr 1fr 1fr; gap:32px;}
@media(max-width:760px){ .foot-grid{grid-template-columns:1fr 1fr;} }
.foot-blurb{font-size:14px; color:var(--muted); max-width:34ch; margin:14px 0 0;}
.foot-col h4{font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin:0 0 12px;}
.foot-col ul{list-style:none; margin:0; padding:0; display:grid; gap:9px;}
.foot-col a{font-size:14px; color:var(--ink-soft);} .foot-col a:hover{color:var(--ink);}
.dev-by{font-family:var(--mono); font-size:11.5px; color:var(--muted); margin-top:18px;}
.dev-by a{color:var(--ink-soft); border-bottom:1px solid var(--rule-strong);}
.compliance{border-top:1px solid var(--rule); margin-top:30px; padding-top:18px;
  display:flex; flex-wrap:wrap; gap:8px 18px; align-items:center;}
.compliance__line{font-size:13px; color:var(--ink-soft); width:100%; margin:0 0 4px;}
.compliance__meta{display:flex; flex-wrap:wrap; gap:6px 14px; font-family:var(--mono); font-size:10.5px; color:var(--muted);}
.age{border:1px solid var(--rule-strong); border-radius:99px; padding:1px 7px;}
.legal{display:flex; flex-wrap:wrap; gap:6px 18px; margin-top:16px; font-family:var(--mono); font-size:10px; color:var(--faint);}

/* ------------------------------------------------------------------- form --- */
.ea-in{font-family:var(--mono); font-size:13.5px; color:var(--ink); background:var(--card);
  border:1px solid var(--rule-strong); border-radius:var(--r); padding:11px 13px; width:100%;}
.ea-in::placeholder{color:var(--faint);}
.ea-in:focus{outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent);}
select.ea-in{appearance:none; -webkit-appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%); background-position:calc(100% - 18px) 18px,calc(100% - 13px) 18px; background-size:5px 5px,5px 5px; background-repeat:no-repeat;}

/* ------------------------------------------------------------------- a11y --- */
@media (prefers-reduced-motion:no-preference){
  .anim-line{stroke-dashoffset:480; animation:draw 1s .15s var(--ease) forwards;}
  .anim-pt{opacity:0; transform:translateY(6px); transform-box:fill-box; transform-origin:center; animation:rise .5s var(--ease) forwards;}
  @keyframes draw{to{stroke-dashoffset:0;}}
  @keyframes rise{to{opacity:1; transform:none;}}
}