:root{
  --paper:#FBFAF7; --panel:#F4F2ED; --ink:#16191C; --ink-2:#5C6268; --ink-3:#8A9096;
  --rule:#E3E0D9; --rule-2:#D3CFC6;
  --signal:#1F6F5C; --signal-soft:#E8F1ED; --clay:#B4644A;
  --shadow:0 1px 2px rgba(22,25,28,.04),0 8px 24px -12px rgba(22,25,28,.12);
  --max:1200px; --rail:clamp(1.25rem,4vw,3.5rem);
  --f-display:"Bricolage Grotesque",Georgia,serif;
  --f-body:"Public Sans","Helvetica Neue",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;
}
*,*::before,*::after{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(--f-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px),linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:64px 64px;opacity:.22;mask-image:radial-gradient(ellipse 120% 80% at 50% 0%,#000 20%,transparent 75%)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--rail);position:relative;z-index:1}

h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;letter-spacing:-.025em;line-height:1.05;margin:0}
h1{font-size:clamp(2.6rem,7vw,5.2rem)}
h2{font-size:clamp(1.9rem,4.4vw,3.1rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem);letter-spacing:-.015em}
p{margin:0}
.lede{font-size:clamp(1.05rem,1.8vw,1.3rem);color:var(--ink-2);line-height:1.55;max-width:62ch}
.small{font-size:.9rem;color:var(--ink-2)}
.mono{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}

.mark{display:inline-flex;align-items:baseline;gap:.1em;font-family:var(--f-display);font-weight:800;letter-spacing:-.04em}
.mark sup{font-size:.55em;font-weight:700;transform:translateY(-.15em);display:inline-block}

header.nav{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:64px}
.nav-links{display:flex;align-items:center;gap:clamp(.75rem,2vw,1.75rem);flex-wrap:wrap}
.nav-links a{font-size:.9rem;color:var(--ink-2);padding:.35rem 0;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink);border-color:var(--signal)}
.nav .btn{padding:.5rem 1rem;font-size:.85rem}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:.8rem 1.5rem;border-radius:2px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);font-family:var(--f-body);font-size:.95rem;font-weight:500;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--rule-2)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-signal{background:var(--signal);border-color:var(--signal)}

.rule{height:1px;background:var(--rule);border:0;margin:0}
section{padding-block:clamp(3.5rem,8vw,6.5rem);position:relative;z-index:1}
.sec-head{display:grid;grid-template-columns:auto 1fr;gap:clamp(1rem,4vw,3rem);align-items:start;margin-bottom:clamp(2rem,5vw,3.5rem)}
.sec-no{font-family:var(--f-mono);font-size:.75rem;color:var(--signal);padding-top:.6rem;letter-spacing:.1em}

.plate{position:relative;background:var(--paper);border:1px solid var(--rule);padding:clamp(1.25rem,3vw,1.75rem);transition:border-color .25s,transform .25s,box-shadow .25s}
.plate::after{content:"";position:absolute;top:-1px;right:-1px;width:10px;height:10px;border-top:1px solid transparent;border-right:1px solid transparent;transition:border-color .25s}
.plate:hover{border-color:var(--rule-2);transform:translateY(-2px);box-shadow:var(--shadow)}
.plate:hover::after{border-color:var(--signal)}

.grid{display:grid;gap:0;background:var(--paper);border:1px solid var(--rule);border-right:0;border-bottom:0}
.grid > *{background:var(--paper);border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.g-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,20rem),1fr))}
.g-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr))}
.g-4{grid-template-columns:repeat(auto-fit,minmax(min(100%,12rem),1fr))}

.dot{width:6px;height:6px;border-radius:50%;background:var(--signal);display:inline-block;flex:none}
.tag{display:inline-block;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--signal);background:var(--signal-soft);padding:.3rem .55rem;border-radius:2px}

.stat{padding:clamp(1.25rem,3vw,1.75rem)}
.stat-n{font-family:var(--f-display);font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;letter-spacing:-.03em;line-height:1}
.stat-l{margin-top:.4rem;font-size:.85rem;color:var(--ink-2)}

footer{border-top:1px solid var(--rule);background:var(--panel);padding-block:clamp(2.5rem,6vw,4rem);position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,11rem),1fr));gap:2rem}
.foot-grid h4{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-weight:500;margin-bottom:.9rem}
.foot-grid a{display:block;padding:.3rem 0;font-size:.92rem;color:var(--ink-2);transition:color .2s}
.foot-grid a:hover{color:var(--signal)}
.foot-base{margin-top:clamp(2rem,5vw,3rem);padding-top:1.5rem;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--ink-3)}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.rise{animation:rise .7s cubic-bezier(.22,.8,.3,1) both}
.d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}.d4{animation-delay:.24s}
.d5{animation-delay:.3s}.d6{animation-delay:.36s}.d7{animation-delay:.42s}.d8{animation-delay:.48s}
.drawline{transform-origin:left;animation:draw .9s cubic-bezier(.22,.8,.3,1) both;animation-delay:.2s}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

.check-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}
.check-row input{flex:1 1 18rem;min-height:52px;padding:.9rem 1.1rem;font-family:var(--f-mono);font-size:1rem;color:var(--ink);background:var(--paper);border:1px solid var(--rule-2);border-radius:2px}
.check-row input:focus{outline:none;border-color:var(--signal);box-shadow:0 0 0 3px var(--signal-soft)}
.check-row .btn{flex:0 0 auto;min-height:52px}
#spinner{display:none;margin-top:1.25rem;font-family:var(--f-mono);font-size:.8rem;color:var(--ink-3)}
#spinner.show{display:block}
#result{display:none;margin-top:2rem}
#result.show{display:block;animation:rise .5s cubic-bezier(.22,.8,.3,1) both}
.result-card{border:1px solid var(--rule);background:var(--paper)}
.result-header{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;padding:1.25rem;border-bottom:1px solid var(--rule)}
.result-domain{font-family:var(--f-mono);font-size:1.05rem;word-break:break-all}
.result-badge{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;padding:.4rem .7rem;border-radius:2px}
.badge-certified{background:var(--signal-soft);color:var(--signal)}
.badge-partial{background:#FBF2E7;color:#8A5A22}
.badge-not{background:#F7ECEA;color:#9B4633}
.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,13rem),1fr));gap:0;background:var(--paper)}
.result-item{padding:1.1rem;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.result-label{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.result-value{margin-top:.45rem;font-size:.95rem;word-break:break-word}
.result-value.pass{color:var(--signal)}
.result-value.none{color:var(--ink-3)}
.dom-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,13rem),1fr));gap:0;background:var(--paper);border:1px solid var(--rule);border-right:0;border-bottom:0}
.dom-list span{padding:.7rem .9rem;font-family:var(--f-mono);font-size:.8rem;color:var(--ink-2);border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.tbl{width:100%;border-collapse:collapse;font-size:.92rem}
.tbl th,.tbl td{text-align:left;padding:.85rem 1rem;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl th{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.tbl td:first-child{font-weight:500}
.yes{color:var(--signal)}.no{color:var(--ink-3)}
.tbl-scroll{overflow-x:auto;border:1px solid var(--rule)}
.steps{counter-reset:s}
.steps > li{counter-increment:s;list-style:none;position:relative;padding-left:3.25rem;padding-block:1.1rem;border-bottom:1px solid var(--rule)}
.steps > li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:1.25rem;font-family:var(--f-mono);font-size:.72rem;color:var(--signal)}
.steps h3{font-size:1.05rem}
code{font-family:var(--f-mono);font-size:.85em;background:var(--panel);padding:.15em .4em;border-radius:2px;word-break:break-all}
pre{overflow-x:auto;background:var(--ink);color:#E8E6E1;padding:1.1rem;border-radius:2px;font-family:var(--f-mono);font-size:.82rem;line-height:1.7}
pre code{background:none;color:inherit;padding:0}

@media (max-width:640px){
  .nav-in{height:auto;flex-wrap:wrap;padding-block:.7rem;row-gap:.5rem}
  .nav-links{width:100%;justify-content:space-between;gap:.5rem}
  .nav-links a{font-size:.85rem}
  .nav .btn{padding:.45rem .8rem;min-height:40px}
  .sec-head{grid-template-columns:1fr;gap:.5rem}
  .sec-no{padding-top:0}
  .foot-base{flex-direction:column;align-items:flex-start}
}

.hero{display:grid;grid-template-columns:1fr;gap:clamp(2rem,5vw,4rem);align-items:center}
@media (min-width:1000px){.hero{grid-template-columns:1.15fr .85fr}}
.specimen{border:1px solid var(--rule);background:var(--paper);box-shadow:var(--shadow);position:relative}
.specimen::before,.specimen::after{content:"";position:absolute;width:9px;height:9px;border-color:var(--signal)}
.specimen::before{top:-1px;left:-1px;border-top:1px solid;border-left:1px solid}
.specimen::after{bottom:-1px;right:-1px;border-bottom:1px solid;border-right:1px solid}
.spec-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.85rem 1.1rem;border-bottom:1px solid var(--rule);background:var(--panel)}
.spec-row{display:grid;grid-template-columns:7.5rem 1fr;gap:.75rem;padding:.8rem 1.1rem;border-bottom:1px solid var(--rule);align-items:baseline}
.spec-row:last-child{border-bottom:0}
.spec-k{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.spec-v{font-family:var(--f-mono);font-size:.78rem;color:var(--ink);word-break:break-all;line-height:1.5}
.spec-v.ok{color:var(--signal);display:flex;align-items:center;gap:.45rem}
.bars{display:flex;gap:3px;align-items:center}
.bars i{width:16px;height:7px;background:var(--rule-2);border-radius:1px;display:block}
.bars i.on{background:var(--signal)}
@media (max-width:420px){.spec-row{grid-template-columns:1fr;gap:.2rem}}

.br-lg{display:none}
@media (min-width:700px){.br-lg{display:inline}}