:root{
  --bg:#0A2A5E; --surface:#103A7A; --grid:#123F82; --text:#EDF3FC; --muted:#A9BFD9;
  --linew:#DCE9F7; --accent:#5AC8FA; --cta:#F59E0B; --ctat:#0A2A5E; --line:#1E4E96;
  --light:#F4F7FA; --lighttext:#1F2937;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);
  font-family:Inter,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.7;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:48px 48px;}
h1,h2,h3{font-family:"Space Grotesk",Inter,sans-serif;line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;margin:2.2em 0 .7em}
h3{font-size:19px;font-weight:600;margin:1.6em 0 .5em}
p{margin:.8em 0}
a{color:var(--accent);text-decoration:none}
.mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
/* ---------- header ---------- */
.topbar{position:sticky;top:0;z-index:50;background:#0A2A5E;border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;gap:28px;height:64px}
.logo{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:20px;color:var(--text);white-space:nowrap}
.logo b{color:var(--accent)}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav>a,.nav .drop>button{color:var(--text);font-size:14.5px;font-weight:500;padding:10px 12px;background:none;border:0;cursor:pointer;font-family:inherit}
.drop{position:relative}
.drop .menu{position:absolute;top:100%;left:0;min-width:250px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px;display:none;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.drop .menu a{display:block;padding:9px 12px;border-radius:6px;color:var(--text);font-size:14px}
.drop .menu small{display:block;color:var(--muted);font-size:12px}
.btn{display:inline-block;background:var(--cta);color:var(--ctat);font-weight:700;padding:12px 26px;border-radius:999px;border:0;cursor:pointer;font-size:15.5px;font-family:inherit}
.btn.ghost{background:transparent;color:var(--text);border:1.5px solid var(--linew)}
.btn.small{padding:9px 20px;font-size:14px}
/* burger visibility is controlled by the max-width media query below (hidden attr hides it on desktop) */
/* ---------- hover (gated: no sticky hover on touch) ---------- */
@media (hover:hover){
a:hover{text-decoration:underline}
.logo:hover{text-decoration:none}
.nav>a:hover,.nav .drop>button:hover{color:var(--accent);text-decoration:none}
.drop:hover .menu,.drop:focus-within .menu{display:block}
.drop .menu a:hover{background:rgba(90,200,250,.12);color:var(--accent);text-decoration:none}
.btn:hover{background:#fbb435;text-decoration:none;color:var(--ctat)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.card:hover{transform:translateY(-3px);border-color:var(--accent)}
.faq summary:hover{color:var(--accent)}
.toc a:hover{color:var(--accent)}
}
/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero .wave{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;padding:72px 24px;align-items:center}
.hero .kicker{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px}
.hero .verdict{font-size:18px;color:var(--muted);max-width:34em;margin:16px 0 26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.evidence{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:30px 0 28px}
.evidence div{background:rgba(16,58,122,.75);padding:14px 16px}
.evidence .n{font-family:"IBM Plex Mono",monospace;font-size:22px;font-weight:600;color:var(--accent)}
.evidence .t{font-size:12.5px;color:var(--muted);line-height:1.5;margin-top:4px}
.evidence .certs{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--accent);line-height:1.7;margin-top:4px}
.showcase{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.showcase img{width:100%;height:auto;display:block}
.showcase figcaption{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--muted);padding:10px 16px;border-top:1px solid var(--line)}
/* ---------- sections ---------- */
.section{padding:56px 0}
.section.alt{background:rgba(16,58,122,.45);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:26px}
.sec-head .idx{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:13px;letter-spacing:.12em}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:22px;transition:transform .15s cubic-bezier(.4,0,.2,1),border-color .15s cubic-bezier(.4,0,.2,1)}
.btn:active{transform:scale(.97)}
.hero .wrap>*,.cards>*,.matrix>*,.steps>*{min-width:0}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}html{scroll-behavior:auto}}
.card h3{margin:.2em 0 .4em;font-size:18px}
.card h3 a{color:var(--text)}
.card p{font-size:14.5px;color:var(--muted)}
.card .spec{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--accent);margin-top:10px}
.card img{width:100%;height:150px;object-fit:cover;border-radius:8px;margin-bottom:12px;background:#0d2c60}
/* process */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px 14px}
.step .snum{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:13px}
.step h4{font-size:15px;margin:8px 0 6px}
.step p{font-size:13px;color:var(--muted);margin:0}
/* strip */
.strip{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.strip div{flex:1 1 160px;background:rgba(16,58,122,.75);padding:16px 18px;border-right:1px solid var(--line)}
.strip div:last-child{border-right:0}
.strip .v{font-family:"IBM Plex Mono",monospace;font-size:19px;color:var(--linew);font-weight:600}
.strip .k{font-size:12.5px;color:var(--muted)}
/* light spec table */
.specs{background:var(--light);color:var(--lighttext);border-radius:10px;overflow:hidden;margin:18px 0}
.specs table{width:100%;border-collapse:collapse;font-size:14.5px}
.specs th,.specs td{padding:11px 16px;text-align:left;border-bottom:1px solid #dbe3ec;vertical-align:top}
.specs th{width:34%;font-weight:600;background:#e9eff6;font-family:"IBM Plex Mono",monospace;font-size:13px}
.specs tr:last-child th,.specs tr:last-child td{border-bottom:0}
/* pcb divider */
.pcb{margin:8px 0;opacity:.55}
/* model matrix */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mcard{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px}
.mcard .model{font-family:"IBM Plex Mono",monospace;font-size:17px;font-weight:600;color:var(--linew)}
.mcard ul{list-style:none;margin:10px 0}
.mcard li{font-size:13.5px;color:var(--muted);padding:8px 0}
.mcard li b{color:var(--text);font-weight:500}
/* chips filter */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 26px}
.chip{background:transparent;border:1.5px solid var(--line);color:var(--muted);border-radius:999px;padding:8px 18px;font-size:13.5px;cursor:pointer;font-family:inherit}
.chip.on{background:var(--accent);border-color:var(--accent);color:#0A2A5E;font-weight:600}
/* two-col for model pages */
.twocol{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.side{position:sticky;top:88px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}
.side h3{margin-top:0;font-size:17px}
.side .modeltag{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:13px;margin-bottom:10px;display:block}
.side .btn{width:100%;text-align:center;margin:8px 0}
/* forms */
form.inquiry label{display:block;font-size:13.5px;font-weight:600;margin:14px 0 6px}
form.inquiry input,form.inquiry select,form.inquiry textarea{width:100%;background:#fff;color:#111;border:1px solid #c7d3e2;border-radius:8px;padding:11px 13px;font-size:15px;font-family:inherit}
form.inquiry textarea{min-height:120px;resize:vertical}
form.inquiry .req{color:#c2410c}
.hp{position:absolute;left:-9999px}
/* faq */
.faq{border-top:1px solid var(--line);margin-top:10px}
.faq details{border-bottom:1px solid var(--line);padding:14px 4px}
.faq summary{cursor:pointer;font-weight:600;font-size:16px}
.faq details p{color:var(--muted);font-size:15px}
/* article */
.article{max-width:72ch}
.article img{max-width:100%;height:auto;border-radius:8px}
.article table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;background:var(--light);color:var(--lighttext);border-radius:8px;overflow:hidden}
.article th,.article td{padding:10px 14px;border-bottom:1px solid #dbe3ec;text-align:left}
.article th{background:#e9eff6;font-family:"IBM Plex Mono",monospace;font-size:13px}
.article blockquote{border-left:3px solid var(--accent);padding:6px 18px;color:var(--muted);margin:16px 0}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px 22px;font-size:14px}
.toc b{display:block;margin-bottom:8px;font-size:13px;letter-spacing:.1em;color:var(--accent)}
.toc a{display:block;padding:8px 0;color:var(--muted)}
/* cta band */
.ctaband{background:linear-gradient(135deg,#0d3570,#0A2A5E);border:1px solid var(--line);border-radius:14px;padding:44px;text-align:center;margin:56px 0}
.ctaband h2{margin:0 0 10px}
.ctaband p{color:var(--muted);max-width:44em;margin:0 auto 22px}
/* footer */
footer{border-top:1px solid var(--line);margin-top:0;padding:48px 0 28px;background:rgba(7,28,62,.6)}
.fgrid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:32px}
footer h4{font-size:14px;letter-spacing:.08em;color:var(--accent);margin-bottom:14px;font-family:"IBM Plex Mono",monospace}
footer ul{list-style:none}
footer li{margin:7px 0;font-size:14px}
footer li a{color:var(--muted)}
footer p{font-size:13.5px;color:var(--muted)}
.tm{font-size:12px;color:#7d93b3;border-top:1px solid var(--line);margin-top:32px;padding-top:20px;line-height:1.8}
.copyright{font-size:12.5px;color:#7d93b3;margin-top:14px}
/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);margin:18px 0 6px;font-family:"IBM Plex Mono",monospace}
.crumb a{color:var(--muted)}
/* cert gallery */
.certs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.certs figure{background:var(--surface);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.certs img{width:100%;height:180px;object-fit:cover;display:block}
.certs figcaption{font-size:12.5px;color:var(--muted);padding:8px 12px;font-family:"IBM Plex Mono",monospace}
/* timeline */
.timeline{border-left:2px solid var(--line);margin:20px 0 20px 8px;padding-left:28px}
.timeline .t{position:relative;margin-bottom:26px}
.timeline .t::before{content:"";position:absolute;left:-36px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent)}
.timeline .y{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:14px}
.timeline p{margin:4px 0 0;color:var(--muted);font-size:15px}
/* responsive */
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;padding:48px 24px}
  .cards,.matrix{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:repeat(3,1fr)}
  .twocol{grid-template-columns:1fr}
  .side{position:static}
  .fgrid{grid-template-columns:1fr 1fr}
  .certs{grid-template-columns:1fr 1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--surface);flex-direction:column;align-items:stretch;padding:12px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .drop .menu{position:static;display:block;box-shadow:none;border:0;background:transparent;padding:0 0 0 12px}
  .burger{display:block;background:none;border:0;color:var(--text);font-size:26px;cursor:pointer;margin-left:auto}
  .evidence{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){.cards,.matrix{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}}