:root{--bp:#0a2f4f;--bp2:#0e4470;--ink:#12212e;--cyan:#2ea8dd;--line:#c9d9e4;--paper:#f6f9fb;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.65}
a{color:var(--bp2)}img{max-width:100%;height:auto}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
/* blueprint grid band */
.blueprint{background-color:var(--bp);background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);background-size:24px 24px,24px 24px,120px 120px,120px 120px;color:#eaf4fb}
.topbar{background:#07263f;color:#cfe6f4;font-size:13px;padding:8px 0}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.topbar a{color:#cfe6f4;text-decoration:none}
header.site{background:#fff;border-bottom:3px solid var(--bp);position:sticky;top:0;z-index:50}
.hd{display:flex;align-items:center;gap:18px;padding:10px 0}
.logo{font-weight:800;font-size:21px;color:var(--bp);text-decoration:none;letter-spacing:.2px}
.logo span{color:var(--cyan)}
.logo small{display:block;font-weight:600;font-size:11px;color:#5a7183;letter-spacing:1.6px;text-transform:uppercase}
nav.main{margin-left:auto}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;align-items:center}
nav.main li{position:relative}
nav.main a{display:block;padding:9px 11px;text-decoration:none;color:var(--ink);font-weight:600;font-size:14.5px;border-radius:4px}
nav.main .menu{display:none;position:absolute;left:0;top:100%;background:#fff;border:1px solid var(--line);border-top:3px solid var(--cyan);min-width:250px;box-shadow:0 14px 30px rgba(10,47,79,.16);padding:8px;z-index:60}
nav.main li:focus-within>.menu{display:block}
nav.main .menu a{font-weight:500;padding:8px 10px}
.langs{display:flex;gap:2px;margin-left:10px;font-size:12.5px}
.langs a{padding:8px 7px;text-decoration:none;color:#5a7183;border:1px solid var(--line);border-radius:3px}
.langs a.on{background:var(--bp);color:#fff;border-color:var(--bp)}

.hero{padding:52px 0 46px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 14px;color:#fff}
.hero p.lead{font-size:18px;color:#d7ecfa;max-width:640px}
.hero-grid{display:grid;min-width:0;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center}
.fig{background:#fff;border:1px solid var(--line);padding:10px;border-radius:6px;color:var(--ink)}
.fig figcaption{font-size:13px;color:#48606f;padding:8px 4px 2px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.chip{font-family:var(--mono);font-size:13px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.35);color:#fff;padding:5px 10px;border-radius:3px}
.chip b{color:#8fd8ff}
/* OE dimension ruler: site visual signature */
.oe-ruler{margin:26px 0 6px;border-top:2px solid var(--bp);position:relative;padding-top:10px}
.oe-ruler:before,.oe-ruler:after{content:"";position:absolute;top:-7px;width:2px;height:12px;background:var(--bp)}
.oe-ruler:before{left:0}.oe-ruler:after{right:0}
.oe-ruler .t{font-family:var(--mono);font-size:12px;letter-spacing:1px;color:#5a7183;text-transform:uppercase}
.oe-ruler .nums{font-family:var(--mono);font-size:15px;color:var(--bp);display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:4px}
.btn{display:inline-block;background:var(--cyan);color:#06283f;font-weight:700;padding:12px 22px;border-radius:4px;text-decoration:none;border:0;cursor:pointer;font-size:15px}
.btn:active{transform:scale(.97)}a:active{opacity:.85}
.btn.ghost{background:transparent;color:#fff;border:1px solid #fff}
section{padding:44px 0}
.alt{background:var(--paper)}
h2{font-size:27px;color:var(--bp);margin:0 0 14px;line-height:1.25}
h3{color:var(--bp);margin:20px 0 8px}
.cards{display:grid;min-width:0;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.card{border:1px solid var(--line);border-radius:6px;padding:18px;background:#fff;text-decoration:none;color:var(--ink);display:block}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;font-size:14px;color:#48606f}
.card .n{font-family:var(--mono);color:var(--cyan);font-weight:700}
table.spec{border-collapse:collapse;width:100%;margin:14px 0;background:#fff}
table.spec th,table.spec td{border:1px solid var(--line);padding:9px 12px;text-align:left;font-size:14.5px;vertical-align:top}
table.spec th{background:var(--bp);color:#fff;width:220px;font-weight:600}
.mono{font-family:var(--mono)}
.two{display:grid;min-width:0;grid-template-columns:1fr 1fr;gap:28px}
.breadcrumb{font-size:13px;color:#5a7183;padding:14px 0 0}
.breadcrumb a{color:#5a7183}
.faq details{border:1px solid var(--line);border-radius:5px;padding:12px 16px;margin:10px 0;background:#fff}
.faq summary{font-weight:700;color:var(--bp);cursor:pointer}
.cta-band{background:var(--bp);color:#eaf4fb;padding:34px;border-radius:8px;margin:36px 0}
.cta-band h2{color:#fff}
form.inq{display:grid;min-width:0;grid-template-columns:1fr 1fr;gap:14px}
form.inq label{font-size:13.5px;font-weight:600;color:var(--bp);display:block}
form.inq input,form.inq select,form.inq textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:4px;font:inherit;margin-top:4px;background:#fff}
form.inq .full{grid-column:1/-1}
footer.site{background:#07263f;color:#b9d4e6;padding:38px 0 26px;font-size:14px}
footer.site a{color:#dceef9}
footer.site .cols{display:grid;min-width:0;grid-template-columns:1.2fr 1fr 1fr;gap:26px}
footer.site h4{color:#fff;margin:0 0 10px}
.post-meta{font-size:13px;color:#5a7183}
article.post p{max-width:820px}
.kicker{font-family:var(--mono);letter-spacing:2px;text-transform:uppercase;color:var(--cyan);font-size:12.5px;font-weight:700}
@media (hover:hover){nav.main a:hover{background:var(--paper);color:var(--bp2)}nav.main li:hover>.menu{display:block}.card:hover{border-color:var(--cyan);box-shadow:0 8px 22px rgba(10,47,79,.1)}.btn:hover{background:#57bde9}}
@media(max-width:860px){
 .hero h1{font-size:30px}.hero-grid,.two,footer.site .cols{grid-template-columns:1fr}
 .burger{display:block !important;margin-left:auto;background:var(--bp);color:#fff;border:0;border-radius:4px;padding:9px 13px;font-size:19px;cursor:pointer}
 nav.main{display:none;width:100%}
 nav.main.open{display:block}
 .hd{flex-wrap:wrap}
 nav.main ul{flex-direction:column;align-items:stretch}
 nav.main .menu{position:static;display:none;box-shadow:none;border:0;border-left:3px solid var(--cyan)}
 nav.main li.open>.menu{display:block}
 form.inq{grid-template-columns:1fr}
 .langs{margin:8px 0}
}