:root{
  --bg:#000;--ink:#fff;--ink-2:rgba(255,255,255,.72);--ink-3:rgba(255,255,255,.5);--line:rgba(255,255,255,.2);
  --red:#E7000D;--yellow:#F5C400;
  --font:"Barlow","Helvetica Neue",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-weight:600;letter-spacing:.02em;line-height:1.02;margin:0;text-transform:uppercase}
p{margin:0 0 1em}
.wrap{max-width:1400px;margin:0 auto;padding:0 clamp(20px,4vw,64px)}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--ink);margin-bottom:14px}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;background:linear-gradient(180deg,rgba(0,0,0,.7),rgba(0,0,0,0));transition:background .3s}
.nav.solid{background:rgba(0,0,0,.94)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:84px;gap:24px}
.brand{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand img{width:auto}
.brand .mm{height:36px}
.brand .bs{height:30px;border-left:1px solid var(--line);padding-left:14px}
.brand .by{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);line-height:1.3;white-space:nowrap}
.brand .by b{display:block;color:#fff;font-weight:600}
@media(max-width:1400px){.brand .by{display:none}}
.nav ul{display:flex;gap:34px;list-style:none;margin:0;padding:0;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase}
.nav ul a{opacity:.85;padding:8px 0;border-bottom:1px solid transparent;transition:border-color .2s,opacity .2s}
.nav ul a:hover,.nav ul a[aria-current]{border-bottom-color:#fff;opacity:1}
.nav .cta{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;padding:12px 20px;border:1px solid #fff;transition:background .2s,color .2s}
.nav .cta:hover{background:#fff;color:#000}
.menu-btn{display:none;background:none;border:0;color:#fff;font:inherit;font-size:12px;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;padding:8px 0}
@media(max-width:1180px){
  .nav ul{display:none;position:absolute;left:0;right:0;top:84px;background:#000;flex-direction:column;gap:0;padding:8px 0 16px;border-bottom:1px solid var(--line)}
  .nav.open ul{display:flex}
  .nav ul a{display:block;padding:14px clamp(20px,4vw,64px)}
  .menu-btn{display:block}
  .nav .cta{display:none}
  .brand .by{display:none}
}

/* ---------- full-bleed panels (SpaceX) ---------- */
.panel{position:relative;min-height:100vh;display:flex;align-items:flex-end;overflow:hidden;background:#000;color:#fff}
.panel.half{min-height:78vh}
.panel.short{min-height:60vh}
.panel .media{position:absolute;inset:0}
.panel .media img,.panel .media video{width:100%;height:100%;object-fit:cover}
.panel .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 30%,rgba(0,0,0,.15) 60%,rgba(0,0,0,.75) 100%)}
.panel .wrap{position:relative;width:100%;padding-top:140px;padding-bottom:clamp(56px,9vh,110px)}
.panel .label{font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;margin-bottom:14px}
.panel h1{font-size:clamp(40px,6.4vw,92px);max-width:14ch;text-shadow:0 2px 28px rgba(0,0,0,.45)}
.panel h2{font-size:clamp(32px,4.8vw,66px);max-width:16ch;text-shadow:0 2px 28px rgba(0,0,0,.45)}
.panel .sub{max-width:54ch;font-size:17px;margin:18px 0 28px;text-shadow:0 1px 14px rgba(0,0,0,.6)}
.panel.center{align-items:center;text-align:center}
.panel.center h2,.panel.center h1{max-width:none;margin-left:auto;margin-right:auto}
.panel.center .sub{margin-left:auto;margin-right:auto}
.panel.center .btn-row{justify-content:center}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:12px;padding:16px 34px;border:2px solid #fff;color:#fff;background:transparent;transition:background .2s,color .2s,border-color .2s;cursor:pointer}
.btn:hover{background:#fff;color:#000}
.btn.solid{background:#fff;color:#000}
.btn.solid:hover{background:transparent;color:#fff}
.rv{opacity:0;transform:translateY(16px);animation:rv .9s cubic-bezier(.2,.7,.2,1) forwards}
.rv.d1{animation-delay:.12s}.rv.d2{animation-delay:.24s}.rv.d3{animation-delay:.36s}
@keyframes rv{to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.rv{animation:none;opacity:1;transform:none}.nav{transition:none}}

/* hero specifics */
.hero .media img{object-position:50% 50%}
@media(max-width:720px){.hero .media img{object-position:40% 50%}}
.hero .media video{opacity:0;transition:opacity 1.2s}
.hero .media video.ready{opacity:1}
.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);width:22px;height:34px;border:2px solid rgba(255,255,255,.6);border-radius:12px}
.scroll-hint::after{content:"";position:absolute;left:50%;top:6px;width:3px;height:7px;margin-left:-1.5px;background:#fff;border-radius:2px;animation:sh 1.6s infinite}
@keyframes sh{0%{transform:translateY(0);opacity:1}100%{transform:translateY(12px);opacity:0}}
@media(prefers-reduced-motion:reduce){.scroll-hint::after{animation:none}}

/* data strip */
.strip{background:#000;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:40px;padding-bottom:40px}
.strip b{display:block;font-size:44px;font-weight:600;line-height:1;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.strip span{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);margin-top:10px}
@media(max-width:720px){.strip .wrap{grid-template-columns:repeat(2,1fr)}.strip b{font-size:34px}}

/* ---------- text sections ---------- */
section.text{padding:120px 0;background:#000}
section.text .wrap{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
section.text h2{font-size:clamp(30px,3.6vw,48px)}
section.text .lead{font-size:20px;line-height:1.5;color:#fff;max-width:60ch}
section.text p{color:var(--ink-2)}
@media(max-width:900px){section.text .wrap{grid-template-columns:1fr;gap:32px}section.text{padding:72px 0}}
.cells{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:40px}
.cells h3{font-size:13px;letter-spacing:.18em;margin-bottom:10px;padding-top:14px;border-top:1px solid #fff}
.cells p{font-size:15px}
@media(max-width:900px){.cells{grid-template-columns:1fr;gap:24px}}

/* ---------- section header (centered, SpaceX-style) ---------- */
.sec-head{text-align:center;padding:120px 0 48px}
.sec-head h2{font-size:clamp(30px,4vw,54px)}
.sec-head p{max-width:64ch;margin:18px auto 0;color:var(--ink-2);font-size:17px}
@media(max-width:720px){.sec-head{padding:72px 0 32px}}

/* ---------- domains: alternating full-bleed rows ---------- */
.domains{display:grid}
.domain{position:relative;min-height:70vh;display:grid;grid-template-columns:1fr 1fr;overflow:hidden;border-top:1px solid var(--line)}
.domain .img{position:relative;min-height:380px}
.domain .img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.domain .txt{display:flex;flex-direction:column;justify-content:center;padding:clamp(40px,6vw,96px)}
.domain .txt .n{font-size:12px;letter-spacing:.22em;color:var(--ink-3);margin-bottom:18px;font-variant-numeric:tabular-nums}
.domain h3{font-size:clamp(28px,3.4vw,46px);margin-bottom:18px}
.domain p{color:var(--ink-2);max-width:48ch;font-size:16px}
.domain ul{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:8px;font-size:14px;color:#fff}
.domain ul li{padding-left:18px;position:relative}
.domain ul li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:2px;background:#fff}
.domain:nth-child(even) .img{order:2}
@media(max-width:900px){.domain{grid-template-columns:1fr;min-height:0}.domain:nth-child(even) .img{order:0}.domain .img{min-height:56vw}}

/* ---------- versatility: attachments grid ---------- */
.attach{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.attach a,.attach div{background:#000;position:relative;min-height:360px;display:flex;align-items:flex-end;overflow:hidden}
.attach img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .6s cubic-bezier(.2,.7,.2,1),opacity .4s}
.attach a:hover img{transform:scale(1.04);opacity:.95}
.attach .t{position:relative;padding:28px;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.85));width:100%;display:block}
.attach .t h3,.attach .t p{display:block}
.attach h3{font-size:20px;margin-bottom:6px}
.attach p{font-size:13px;color:var(--ink-2);margin:0}
@media(max-width:900px){.attach{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.attach{grid-template-columns:1fr}.attach a,.attach div{min-height:260px}}
.hydro{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:48px 0 96px}
.hydro div{border-top:1px solid #fff;padding-top:16px}
.hydro b{display:block;font-size:34px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.hydro span{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-top:8px}
@media(max-width:720px){.hydro{grid-template-columns:1fr;gap:20px;padding-bottom:64px}}

/* ---------- model rail ---------- */
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:min(82vw,460px);gap:2px;overflow-x:auto;scroll-snap-type:x mandatory;padding:0 clamp(20px,4vw,64px) 40px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.card{scroll-snap-align:start;position:relative;aspect-ratio:4/5;overflow:hidden;background:#0a0a0a;display:flex;align-items:flex-end}
.card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.card:hover img{transform:scale(1.05)}
.card .t{position:relative;width:100%;padding:28px;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.9) 70%)}
.card .code{font-size:34px;font-weight:600;text-transform:uppercase;line-height:1}
.card .kg{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-2);margin-top:8px}
.card .more{display:inline-block;margin-top:16px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;border-bottom:1px solid #fff;padding-bottom:3px}
.rail-ctl{display:flex;justify-content:flex-end;gap:8px;padding:0 clamp(20px,4vw,64px) 16px}
.rail-ctl button{background:none;border:1px solid var(--line);color:#fff;width:44px;height:44px;cursor:pointer;font-size:18px}
.rail-ctl button:hover{border-color:#fff}

/* ---------- model/series page ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:2px}
.gallery img{width:100%;aspect-ratio:3/2;object-fit:cover}
@media(max-width:720px){.gallery{grid-template-columns:1fr}}
.model{padding:110px 0;border-top:1px solid var(--line)}
.model .wrap{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:start}
.model h2{font-size:clamp(36px,4.6vw,64px)}
.model .kg{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2);margin:12px 0 24px}
.model .pic{width:100%;aspect-ratio:3/2;object-fit:cover;margin-bottom:28px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 28px;padding:0;list-style:none}
.chips li{font-size:13px;padding:8px 12px;border:1px solid var(--line);color:#fff}
table.spec{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:15px}
table.spec th,table.spec td{text-align:left;padding:12px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.spec th{font-weight:500;color:var(--ink-2);width:50%}
table.spec caption{text-align:left;font-size:11px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;padding-bottom:12px}
@media(max-width:900px){.model .wrap{grid-template-columns:1fr;gap:32px}.model{padding:72px 0}}
.series-nav{display:flex;justify-content:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow-x:auto}
.series-nav a{padding:20px 28px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;opacity:.7;border-bottom:2px solid transparent;white-space:nowrap}
.series-nav a:hover{opacity:1}
.series-nav a[aria-current]{opacity:1;border-bottom-color:#fff}
@media(max-width:720px){.series-nav{justify-content:flex-start}.series-nav a{padding:16px 14px}}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;margin-top:48px}
.steps div{border-top:1px solid #fff;padding-top:16px}
.steps b{display:block;font-size:11px;letter-spacing:.22em;text-transform:uppercase;margin-bottom:10px}
.steps p{font-size:15px;color:var(--ink-2)}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr);gap:28px}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* ---------- contact ---------- */
.contact{padding:120px 0;border-top:1px solid var(--line)}
.contact .wrap{display:grid;grid-template-columns:5fr 7fr;gap:64px}
.contact h2{font-size:clamp(30px,3.6vw,48px);margin-bottom:28px}
@media(max-width:900px){.contact .wrap{grid-template-columns:1fr;gap:40px}.contact{padding:72px 0}}
form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
form label{display:flex;flex-direction:column;gap:8px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
form label.full{grid-column:1/-1}
input,select,textarea{font:inherit;color:#fff;background:#0b0b0b;border:1px solid var(--line);padding:14px 16px;letter-spacing:0;text-transform:none;border-radius:0}
select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#fff 50%),linear-gradient(135deg,#fff 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px;background-repeat:no-repeat}
input:focus,select:focus,textarea:focus{outline:none;border-color:#fff}
textarea{min-height:140px;resize:vertical}
form .btn{grid-column:1/-1;justify-self:start}
@media(max-width:720px){form{grid-template-columns:1fr}}
.contact-side p{margin:0 0 20px;color:#fff;font-size:17px}
.contact-side b{display:block;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2);margin-bottom:4px}

/* ---------- oferta wizard (multi-step) ---------- */
#oferta{display:block;grid-template-columns:none;gap:0}
.prog{border:1px solid var(--line);background:#0b0b0b;padding:12px 14px;margin-bottom:12px}
.prog .pl{display:flex;justify-content:space-between;font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);margin-bottom:9px}
.prog .pt{height:4px;background:rgba(255,255,255,.14)}
.prog .pf{height:100%;width:0;background:var(--red);transition:width .4s cubic-bezier(.2,.7,.2,1)}
.ofcard{position:relative;border:1px solid var(--line);background:#0b0b0b;padding:30px 24px;overflow:hidden}
.ofcard::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--red)}
.fstep[hidden]{display:none}
.fstep .fk{font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--red);margin-bottom:12px}
.fstep h3{font-size:clamp(22px,3vw,30px);font-weight:600;text-transform:uppercase;letter-spacing:.02em;line-height:1.05;margin:0 0 8px}
.fhint{font-size:14px;color:var(--ink-2);margin-bottom:22px;text-transform:none;letter-spacing:0;line-height:1.45}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.opt{position:relative;display:flex;align-items:center;min-height:60px;padding:14px 18px;border:1px solid var(--line);background:#000;cursor:pointer;transition:border-color .15s,background .15s}
.opt:hover{border-color:rgba(255,255,255,.55)}
.opt input[type=radio]{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.opt .ol{font-size:15px;font-weight:500;line-height:1.25;color:#fff;letter-spacing:0;text-transform:none}
.opt:has(input:checked){border-color:var(--red);background:rgba(231,0,13,.1)}
.opt:has(input:checked)::before{content:"";position:absolute;top:0;left:0;bottom:0;width:3px;background:var(--red)}
.opt:focus-within{outline:2px solid #fff;outline-offset:2px}
.ffields{display:grid;gap:16px}
.ffields .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ffields label{display:grid;gap:8px;font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.fnav{display:flex;gap:10px;margin-top:24px}
.fnav .fnext,.fnav .fsubmit{flex:1}
.fnav .fback{flex:0 0 auto}
.fnav .btn{padding:15px 26px}
.ftrust{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);text-align:center;margin-top:16px}
@media(max-width:560px){.opts{grid-template-columns:1fr}.ffields .row2{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{padding:48px 0 32px;border-top:1px solid var(--line);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px 40px;align-items:center;justify-content:space-between}
footer ul{display:flex;flex-wrap:wrap;gap:24px;list-style:none;margin:0;padding:0}
footer a:hover{color:#fff}
footer .legal{width:100%;text-transform:none;letter-spacing:0;font-size:12px;margin-top:16px;line-height:1.6}
footer .legal a{text-decoration:underline}

/* ---------- guide / articles ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px}
.gcard{position:relative;aspect-ratio:4/3;overflow:hidden;display:flex;align-items:flex-end;background:#0a0a0a}
.gcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.gcard:hover img{transform:scale(1.04)}
.gcard .t{position:relative;padding:24px;width:100%;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.88) 60%)}
.gcard .t span{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-2)}
.gcard h3{font-size:20px;margin-top:8px;line-height:1.15}
@media(max-width:900px){.guide-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.guide-grid{grid-template-columns:1fr}}
.art-hero h1{max-width:20ch}
.crumbs{padding-top:24px;font-size:12px;letter-spacing:.08em;color:var(--ink-3)}
.crumbs a{color:var(--ink-2);text-decoration:underline}
.art{display:grid;grid-template-columns:minmax(0,720px) 300px;gap:72px;justify-content:space-between;padding-top:40px;padding-bottom:40px}
@media(max-width:1000px){.art{grid-template-columns:1fr;gap:40px}}
.prose{font-size:18px;line-height:1.7;color:rgba(255,255,255,.86)}
.prose .lead{font-size:21px;color:#fff;line-height:1.55}
.prose h2{font-size:clamp(24px,2.6vw,32px);margin:56px 0 18px;line-height:1.1}
.prose p{margin:0 0 1.1em}
.prose ul{padding-left:1.2em;margin:0 0 1.4em}
.prose li{margin:.45em 0}
.prose a{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(255,255,255,.4)}
.prose a:hover{text-decoration-color:#fff}
.prose b{color:#fff;font-weight:600}
.prose .note{font-size:14px;color:var(--ink-3)}
.prose .formula{border-left:2px solid #fff;padding:12px 18px;background:#0b0b0b;font-variant-numeric:tabular-nums;color:#fff}
.prose table.data{width:100%;border-collapse:collapse;font-size:15px;margin:8px 0 18px;font-variant-numeric:tabular-nums;display:block;overflow-x:auto}
.prose table.data th,.prose table.data td{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--line);vertical-align:top}
.prose table.data th{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);font-weight:600}
.prose details{border-top:1px solid var(--line);padding:16px 0}
.prose details:last-of-type{border-bottom:1px solid var(--line)}
.prose summary{cursor:pointer;color:#fff;font-weight:600}
.prose details p{margin:12px 0 0}
.prose .byline{margin-top:48px;font-size:13px;color:var(--ink-3)}
.art-cta{position:sticky;top:110px;align-self:start;border:1px solid var(--line);padding:28px;display:flex;flex-direction:column;gap:12px}
.art-cta h3{font-size:20px}
.art-cta p{color:var(--ink-2);font-size:15px;margin:0}
.art-cta .btn{text-align:center}
.art-cta ul{list-style:none;padding:12px 0 0;margin:0;border-top:1px solid var(--line);font-size:14px}
.art-cta li{padding:6px 0}
.art-cta a:not(.btn):hover{text-decoration:underline}
@media(max-width:1000px){.art-cta{position:static}}
footer .wrap > ul + ul{margin-left:auto}