:root{--ink:#0f1214;--ink2:#1a1f23;--steel:#2b3237;--line:#d9dcd6;--paper:#f4f2ec;--paper2:#e9e6dd;--mute:#5d666c;--amber:#f2a33a;--amber-d:#8a4f06;--ok:#7fd18b;
--sans:"Inter","Helvetica Neue",Arial,system-ui,sans-serif;--mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;--disp:"Archivo","Arial Narrow","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{margin:0;font:16px/1.6 var(--sans);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;background:var(--amber);color:var(--ink);padding:8px 14px;z-index:99}.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
a{color:inherit}
.proto-bar{background:var(--amber);color:var(--ink);font:600 12px/1.4 var(--mono);text-align:center;padding:6px 12px;letter-spacing:.02em}
.site-head{position:sticky;top:0;z-index:50;background:rgba(15,18,20,.92);backdrop-filter:blur(10px);color:#eef0ee;border-bottom:1px solid #262c31}
.head-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;font:800 19px/1 var(--disp);letter-spacing:.04em;text-transform:uppercase}
.mark{width:28px;height:28px}
.nav{display:flex;gap:26px;align-items:center}
.nav a{text-decoration:none;font-size:14px;color:#c9cfd2}.nav a:hover{color:#fff}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.menu-btn i,.menu-btn i::before,.menu-btn i::after{display:block;width:22px;height:2px;background:#eef0ee;margin:auto;position:relative;transition:.25s}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute}.menu-btn i::before{top:-7px}.menu-btn i::after{top:7px}
.menu-btn[aria-expanded=true] i{background:transparent}.menu-btn[aria-expanded=true] i::before{top:0;transform:rotate(45deg)}.menu-btn[aria-expanded=true] i::after{top:0;transform:rotate(-45deg)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;background:var(--amber);color:var(--ink)!important;font:700 15px/1 var(--sans);text-decoration:none;border:0;border-radius:2px;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
.btn:hover{transform:translateY(-1px);box-shadow:inset 0 -3px 0 rgba(0,0,0,.18),0 6px 18px rgba(242,163,58,.25)}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn-ghost{background:transparent;color:#eef0ee!important;box-shadow:inset 0 0 0 1.5px #59636b}.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--amber)}
.link-arrow{font-weight:600;text-decoration:none;border-bottom:1.5px solid var(--amber);padding-bottom:2px}
/* hero */
.hero{position:relative;background:var(--ink);color:#eef0ee;overflow:hidden;padding:72px 0 64px}
.grid-bg{position:absolute;inset:0;background-image:linear-gradient(#1d2327 1px,transparent 1px),linear-gradient(90deg,#1d2327 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse at 70% 40%,#000 20%,transparent 75%)}
.hero-in{position:relative;z-index:1}
.eyebrow{font:600 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:#a9b2b8;display:flex;gap:10px;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(127,209,139,.15)}
h1,h2,h3{font-family:var(--disp);line-height:1.05;letter-spacing:-.01em;margin:0}
h1{font-size:clamp(38px,8.5vw,76px);font-weight:800;text-transform:uppercase;margin:20px 0;max-width:15ch}
.accent{color:var(--amber)}
.lede{font-size:clamp(17px,2vw,20px);color:#c4cacd;max-width:56ch}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:30px 0 44px}
.hero .link-arrow{color:#eef0ee}
.spec-strip{display:grid;grid-template-columns:1fr;gap:0;margin:0;border-top:1px solid #2b3237;max-width:640px}
.spec-strip div{padding:14px 0;border-bottom:1px solid #2b3237}
.spec-strip dt{font:600 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:#7d878e}
.spec-strip dd{margin:6px 0 0;font-weight:600}
.hero-art{display:none}
.blink{animation:blink 2.4s infinite}@keyframes blink{50%{opacity:.25}}
.leds circle{animation:blink 1.2s infinite}.leds circle:nth-child(2n){animation-delay:.4s}.leds circle:nth-child(3n){animation-delay:.8s}
/* sections */
.sec{padding:80px 0}
.sec-dark{background:var(--ink2);color:#e6e9e8}
.sec-alt{background:var(--paper2)}
.sec-head{max-width:720px;margin-bottom:44px}
.kicker{font:600 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--amber-d);margin:0 0 14px}
.sec-dark .kicker{color:var(--amber)}
h2{font-size:clamp(30px,5vw,48px);font-weight:800;margin-bottom:16px}
.sec-head p{color:var(--mute);font-size:17px}.sec-dark .sec-head p{color:#a9b2b8}
.cats{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.cats li{background:var(--paper);padding:26px 24px;transition:background .2s}
.cats li:hover{background:#fff}
.cats svg{width:40px;height:40px;fill:none;stroke:var(--ink);stroke-width:2;margin-bottom:14px}
.cats li:hover svg{stroke:var(--amber-d)}
.cats h3{font-size:20px;margin-bottom:6px;text-transform:uppercase}
.cats p{margin:0;color:var(--mute);font-size:15px}
.note{font-size:13px;color:var(--mute);margin-top:18px;font-family:var(--mono)}
.pk-grid{display:grid;gap:18px}
.pk{border:1px solid #333b41;padding:28px;background:#14181b;display:flex;flex-direction:column;gap:12px}
.pk h3{font-size:24px;text-transform:uppercase}.pk p{margin:0;color:#a9b2b8}
.pk .link-arrow{margin-top:auto;color:#eef0ee;align-self:flex-start}
.tag{font:600 11px/1 var(--mono)!important;letter-spacing:.12em;text-transform:uppercase;color:var(--amber)!important}
.pk-feature{border-color:var(--amber);background:linear-gradient(160deg,#1f2529,#14181b)}
.pk-feature h3{font-size:32px}
.bom{list-style:none;counter-reset:b;padding:0;margin:8px 0 14px;border-top:1px solid #333b41}
.bom li{counter-increment:b;display:grid;grid-template-columns:28px 110px 1fr;gap:8px;padding:10px 0;border-bottom:1px solid #333b41;font-size:14px}
.bom li::before{content:counter(b,decimal-leading-zero);font-family:var(--mono);color:#6c767d}
.bom span{font-weight:700;color:#eef0ee}.bom em{font-style:normal;color:#a9b2b8}
.pk-feature .btn{align-self:flex-start}
/* system */
.sys{display:grid;gap:28px}
.sys-diagram{background:var(--ink);border-radius:4px;padding:18px;overflow-x:auto}
.sys-diagram svg{width:100%;min-width:640px;display:block}
.flow{fill:none;stroke:#3c454c;stroke-width:3}
.sys.on .flow{stroke:var(--amber);stroke-dasharray:8 10;animation:flow 1.2s linear infinite}
@keyframes flow{to{stroke-dashoffset:-18}}
.node{cursor:pointer}.node rect{fill:#1f2529;stroke:#3c454c;stroke-width:2;transition:.2s}
.node .ico{fill:none;stroke:#8a959d;stroke-width:2.5}
.node text{fill:#c9cfd2;font:600 13px var(--sans);text-anchor:middle}
.node:hover rect,.node.act rect{stroke:var(--amber);fill:#262c31}.node.act .ico{stroke:var(--amber)}
.sys-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.sys-tabs button{font:600 13px var(--sans);padding:10px 14px;background:transparent;border:1.5px solid var(--line);border-radius:2px;cursor:pointer;color:var(--ink);min-height:44px}
.sys-tabs button[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.sys-panel h3{font-size:26px;text-transform:uppercase;margin-bottom:8px}
.sys-panel p{color:var(--mute);margin:0 0 10px;max-width:60ch}.sys-we{color:var(--ink)!important}
/* why */
.why{display:grid;gap:30px}
.why .n{font:700 13px var(--mono);display:inline-grid;place-items:center;width:34px;height:34px;border:1.5px solid var(--ink);margin-bottom:14px}
.why h3{font-size:22px;text-transform:uppercase;margin-bottom:8px}.why p{margin:0;color:var(--mute)}
.ind{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.ind li{display:grid;gap:6px;padding:22px 0;border-bottom:1px solid var(--line)}
.ind h3{font-size:24px;text-transform:uppercase}.ind p{margin:0;color:var(--mute)}
/* form */
form{display:grid;gap:18px}
.f2{display:grid;gap:18px}
label{display:grid;gap:6px;font-size:14px;font-weight:600;color:#d7dcde}
small{font-weight:400;color:#8a959d}
input,select,textarea{font:16px var(--sans);padding:12px 14px;background:#0f1214;color:#eef0ee;border:1.5px solid #3c454c;border-radius:2px;width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--amber);outline:none}
input[type=file]{padding:10px}
[aria-invalid=true]{border-color:#ff7a6b}
fieldset{border:1.5px solid #3c454c;padding:14px 16px;margin:0}legend{font-size:14px;font-weight:600;color:#d7dcde;padding:0 6px}
.radio{display:flex;gap:10px;align-items:center;font-weight:400;padding:4px 0}.radio input{width:20px;height:20px;accent-color:var(--amber)}
.f-err{background:#3a1e1b;border-left:4px solid #ff7a6b;padding:12px 16px;color:#ffd5cf;font-size:14px}
.f-status{background:#2b2618;border-left:4px solid var(--amber);padding:14px 16px;font-size:14px;color:#f3e3c6}
form .btn{justify-self:start}
/* about/contact/footer */
.about{display:grid;gap:20px}.about p{font-size:18px;max-width:62ch}
.contact dl{display:grid;gap:0;margin:24px 0 0;border-top:2px solid var(--ink)}
.contact dl div{padding:16px 0;border-bottom:1px solid #cfccc2;display:grid;grid-template-columns:110px 1fr}
.contact dt{font:600 12px/1.8 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--mute)}.contact dd{margin:0;font-weight:600}
.foot{background:var(--ink);color:#a9b2b8;padding:48px 0;font-size:14px}
.foot strong{color:#fff;font-family:var(--disp);text-transform:uppercase;letter-spacing:.04em}
.foot-in{display:grid;gap:24px}.foot nav{display:flex;flex-wrap:wrap;gap:18px}.foot a{text-decoration:none}.foot a:hover{color:#fff}
.legal{font-size:12px;color:#8f999f;max-width:80ch}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}.reveal.in{opacity:1;transform:none}
@media (max-width:899px){
 .menu-btn{display:block}
 .nav{position:absolute;top:64px;left:0;right:0;background:var(--ink);flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;display:none;border-bottom:1px solid #262c31}
 .nav.open{display:flex}.nav a{padding:14px 0;border-bottom:1px solid #262c31;font-size:16px}.nav .btn{margin-top:14px;border:0}
}
@media (min-width:640px){.cats{grid-template-columns:repeat(2,1fr)}.f2{grid-template-columns:1fr 1fr}.why{grid-template-columns:1fr 1fr}.spec-strip{grid-template-columns:repeat(3,1fr);gap:24px}.spec-strip div{border-bottom:0}}
@media (min-width:900px){
 .sec{padding:120px 0}
 .hero{padding:110px 0 100px}
 .hero-art{display:block;position:absolute;right:max(20px,calc(50% - 600px));top:60px;width:380px;z-index:1;opacity:.95}
 .hero-in>*{max-width:640px}
 .cats{grid-template-columns:repeat(4,1fr)}
 .pk-grid{grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:auto auto}
 .pk-feature{grid-row:span 2}
 .pk-grid .pk:nth-child(4){grid-column:2/4}
 .sys{grid-template-columns:1.6fr 1fr;align-items:center}
 .why{grid-template-columns:repeat(4,1fr)}
 .ind{display:grid;grid-template-columns:1fr 1fr;column-gap:48px}
 .about{grid-template-columns:1fr 1.4fr;gap:60px}
 .q-wrap{display:grid;grid-template-columns:1fr 1.5fr;gap:60px}
 .contact{display:grid;grid-template-columns:1fr 1.5fr;gap:60px}.contact dl{margin:0}
 .foot-in{grid-template-columns:1fr 2fr}.legal{grid-column:1/-1}
}
[id]{scroll-margin-top:64px}