:root{
  --ink:#191B3D; --graphite:#3A3C5C; --granite:#8A8B96;
  --sand:#EDEEF3; --paper:#FBFBFD; --accent:#242454; --accent-soft:#0048FC;
  --line:rgba(36,36,84,.14); --bg:var(--paper); --fg:var(--ink);
  --muted:#63657D; --card:#fff;
  --maxw:1320px; --pad:clamp(20px,5vw,72px);
  --serif:"Marcellus",Georgia,serif; --sans:"Inter",-apple-system,system-ui,sans-serif;
}
[data-theme="dark"]{
  --bg:#10122B; --fg:#EDEEF5; --paper:#10122B; --ink:#EDEEF5;
  --line:rgba(237,238,245,.16); --muted:#9EA0B8; --card:#181A38;
  --sand:#1B1D3D; --granite:#9a9db0; --accent:#4E6EF5; --accent-soft:#8AA0FF;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--fg);font-family:var(--sans);
  font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;
  letter-spacing:-.01em;overflow-x:hidden;transition:background .5s ease,color .5s ease;
}
/* grain */
body::before{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}
h1,h2,h3,.serif{font-family:var(--serif);font-weight:400;letter-spacing:-.005em;line-height:1.07}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.eyebrow{font-family:var(--sans);font-size:.72rem;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--accent)}
.muted{color:var(--muted)}
.rule{height:1px;background:var(--line);border:0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.6em;font-size:.82rem;font-weight:500;letter-spacing:.04em;
  padding:.95em 1.7em;border-radius:2px;border:1px solid transparent;cursor:pointer;transition:.35s ease;text-transform:uppercase}
.btn .ar{transition:transform .35s ease}
.btn:hover .ar{transform:translateX(4px)}
.btn-solid{background:var(--accent);color:#fff}
.btn-solid:hover{background:var(--ink);color:var(--paper)}
.btn-ghost{border-color:currentColor;color:var(--fg)}
.btn-ghost:hover{background:var(--fg);color:var(--bg)}
.btn-light{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-light:hover{background:#fff;color:var(--ink)}

/* nav */
header.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.4s ease;
  border-bottom:1px solid transparent}
header.nav .bar{display:flex;align-items:center;justify-content:space-between;height:84px}
.brand{font-family:var(--serif);font-weight:400;font-size:1.32rem;letter-spacing:-.01em;color:#fff;transition:color .4s}
.brand b{font-weight:600}
.brand .dot{color:var(--accent-soft)}
nav.menu{display:flex;gap:2.1rem;align-items:center}
nav.menu a{font-size:.83rem;font-weight:500;letter-spacing:.02em;color:rgba(255,255,255,.86);transition:color .25s;position:relative}
nav.menu a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--accent-soft);transition:width .3s}
nav.menu a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:1rem}
.ttoggle{background:none;border:1px solid rgba(255,255,255,.4);color:#fff;width:38px;height:38px;border-radius:50%;cursor:pointer;display:grid;place-items:center;font-size:.9rem;transition:.3s}
.ttoggle:hover{background:rgba(255,255,255,.12)}
.lang{display:flex;gap:.55rem;align-items:center;font-size:.74rem;font-weight:500;letter-spacing:.08em;padding-right:.4rem;border-right:1px solid rgba(255,255,255,.25)}
.lang span{color:rgba(255,255,255,.6);cursor:pointer;transition:.2s}
.lang span.active,.lang span:hover{color:#fff}
header.nav.scrolled .lang{border-right-color:var(--line)}
header.nav.scrolled .lang span{color:var(--muted)}
header.nav.scrolled .lang span.active,header.nav.scrolled .lang span:hover{color:var(--fg)}
header.nav.scrolled{background:var(--bg);border-bottom-color:var(--line);box-shadow:0 1px 30px rgba(0,0,0,.05)}
header.nav.scrolled .brand{color:var(--fg)}
header.nav.scrolled nav.menu a{color:var(--fg)}
header.nav.scrolled .ttoggle{border-color:var(--line);color:var(--fg)}
header.nav.scrolled .btn-light{border-color:var(--line);color:var(--fg)}
header.nav.scrolled .btn-light:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.burger{display:none;background:none;border:0;color:#fff;cursor:pointer;flex-direction:column;gap:5px}
.burger span{width:26px;height:1.5px;background:currentColor;display:block}

/* hero */
.hero{position:relative;height:100vh;min-height:640px;display:flex;align-items:flex-start;color:#fff;overflow:hidden}
.hero video,.hero .heroimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(15,14,12,.55) 0%,rgba(15,14,12,.18) 38%,rgba(15,14,12,.82) 100%)}
.hero .wrap{width:100%;padding-top:clamp(96px,11.5vh,112px);padding-bottom:40px}
.hero .eyebrow{color:#d9b8b2}
.hero h1{font-size:clamp(2.4rem,5.1vw,4.6rem);margin:.28em 0 .5em;max-width:20ch;font-weight:400}
.hero h1 em{font-style:normal;color:#e8cfc9}
.hero p.lead{font-size:clamp(1rem,1.5vw,1.22rem);max-width:46ch;color:rgba(255,255,255,.86);font-weight:300;line-height:1.55}
.hero .cta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2.2rem}
.hero-panel{display:inline-block;max-width:min(900px,94vw);
  background:linear-gradient(158deg,rgba(18,16,13,.28),rgba(18,16,13,.55));
  backdrop-filter:blur(7px) saturate(1.05);-webkit-backdrop-filter:blur(7px) saturate(1.05);
  border:1px solid rgba(255,255,255,.13);border-radius:3px;
  padding:clamp(24px,3vw,42px) clamp(26px,3.4vw,50px);
  box-shadow:0 40px 90px rgba(0,0,0,.28)}
.scrollcue{position:absolute;left:var(--pad);bottom:26px;font-size:.68rem;letter-spacing:.25em;text-transform:uppercase;color:rgba(255,255,255,.6);display:flex;align-items:center;gap:.6rem;z-index:2}
.scrollcue::before{content:"";width:34px;height:1px;background:rgba(255,255,255,.5);animation:cue 2s infinite}
@keyframes cue{0%,100%{transform:scaleX(.3);opacity:.4;transform-origin:left}50%{transform:scaleX(1);opacity:1;transform-origin:left}}

/* sections */
section{padding-block:clamp(72px,11vh,140px)}
.sechead{display:flex;justify-content:space-between;align-items:end;gap:2rem;margin-bottom:clamp(36px,5vw,64px)}
.sechead h2{font-size:clamp(2rem,4.4vw,3.4rem);max-width:18ch}
.sechead .idx{font-family:var(--serif);font-size:.95rem;color:var(--granite)}
.lead-2{font-size:1.05rem;max-width:52ch;color:var(--muted);font-weight:300}

/* trust strip */
.trust{background:var(--ink);color:var(--paper);padding-block:clamp(40px,6vh,68px)}
[data-theme="dark"] .trust{background:#0A0B1E}
.trust .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12)}
.trust .cell{background:var(--ink);padding:8px 22px 4px}
[data-theme="dark"] .trust .cell{background:#0A0B1E}
.trust .num{font-family:var(--serif);font-size:clamp(2.2rem,4vw,3.1rem);font-weight:300;color:#fff;line-height:1}
.trust .lab{font-size:.78rem;letter-spacing:.04em;color:rgba(255,255,255,.6);margin-top:.5em}

/* oferta */
.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,1.6vw,26px)}
.tile{position:relative;overflow:hidden;border-radius:2px;aspect-ratio:4/5;display:block;background:var(--graphite)}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s cubic-bezier(.2,.8,.2,1);filter:saturate(.92)}
.tile:hover img{transform:scale(1.06)}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,14,12,.05) 30%,rgba(15,14,12,.82) 100%)}
.tile .tx{position:absolute;left:0;bottom:0;padding:26px 24px;color:#fff;z-index:2;width:100%}
.tile .tnum{font-family:var(--serif);font-size:.8rem;color:rgba(255,255,255,.65)}
.tile h3{font-size:1.42rem;margin:.3em 0 .1em;font-weight:400}
.tile .tdesc{font-size:.86rem;color:rgba(255,255,255,.8);max-height:0;opacity:0;overflow:hidden;transition:.5s ease;font-weight:300}
.tile .tarrow{font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;margin-top:.9em;display:inline-flex;gap:.5em;color:#fff}
.tile:hover .tdesc{max-height:80px;opacity:1;margin-top:.5em}

/* split / o firmie */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,80px);align-items:center}
.split .ph{aspect-ratio:4/3;overflow:hidden;border-radius:2px}
.split .ph img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:clamp(1.9rem,3.8vw,3rem);margin-bottom:.5em}
.split p{color:var(--muted);margin-bottom:1.1em;font-weight:300;font-size:1.04rem}
.split blockquote{font-family:var(--serif);font-style:normal;font-size:1.5rem;font-weight:400;line-height:1.32;color:var(--fg);border-left:2px solid var(--accent);padding-left:1.1rem;margin:1.4rem 0}
.feat{display:flex;gap:2.2rem;margin-top:1.6rem;flex-wrap:wrap}
.feat div span{font-family:var(--serif);font-size:1.7rem;color:var(--accent);display:block;min-height:2.35em}
.feat div small{font-size:.82rem;color:var(--muted)}

/* realizacje */
.bg-sand{background:var(--sand)}
.filters{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:30px}
.chip{font-size:.78rem;letter-spacing:.03em;padding:.55em 1.1em;border:1px solid var(--line);border-radius:40px;color:var(--muted);cursor:pointer;transition:.25s}
.chip.active,.chip:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.gal{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(10px,1.2vw,18px);grid-auto-rows:200px}
.gal a{overflow:hidden;border-radius:2px;position:relative;display:block}
.gal a img{width:100%;height:100%;object-fit:cover;transition:transform 1s ease}
.gal a:hover img{transform:scale(1.07)}
.gal a::after{content:attr(data-cap);position:absolute;left:0;bottom:0;width:100%;padding:14px 16px;
  color:#fff;font-size:.8rem;background:linear-gradient(transparent,rgba(0,0,0,.7));opacity:0;transform:translateY(8px);transition:.3s}
.gal a:hover::after{opacity:1;transform:none}
.g1{grid-column:span 7;grid-row:span 2}.g2{grid-column:span 5}.g3{grid-column:span 5}
.g4{grid-column:span 4}.g5{grid-column:span 4}.g6{grid-column:span 4}

/* materialy */
.stones{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.4vw,22px)}
.stone{border:1px solid var(--line);border-radius:2px;overflow:hidden;background:var(--card)}
.stone .sw{height:150px;overflow:hidden}
.stone .sw img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s cubic-bezier(.2,.8,.2,1)}
.stone:hover .sw img{transform:scale(1.06)}
.stone-cta{display:flex;align-items:center;justify-content:center;text-align:center;min-height:216px;background:var(--sand);transition:background .35s}
.stone-cta:hover{background:var(--ink)}
.stone-cta span{font-family:var(--serif);font-size:1.15rem;color:var(--fg);line-height:1.3;transition:color .35s;padding:0 14px}
.stone-cta:hover span{color:var(--paper)}
.stone-cta .ar{color:var(--accent)}
.stone .si{padding:14px 16px}
.stone .si b{font-family:var(--serif);font-weight:500;font-size:1.05rem}
.stone .si small{display:block;color:var(--muted);font-size:.78rem;margin-top:.2em}

/* proces */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:clamp(14px,2vw,30px);counter-reset:s}
.step{position:relative;padding-top:30px;border-top:1px solid var(--line)}
.step .n{font-family:var(--serif);font-size:2.4rem;color:var(--accent);font-weight:300;line-height:1}
.step h4{font-size:1.05rem;font-weight:500;margin:.6em 0 .3em;font-family:var(--sans)}
.step p{font-size:.86rem;color:var(--muted);font-weight:300}

/* b2b band */
.band{background:var(--ink);color:var(--paper);text-align:center}
[data-theme="dark"] .band{background:#0A0B1E}
.band h2{font-size:clamp(1.9rem,4vw,3.2rem);max-width:20ch;margin:0 auto .4em;color:#fff}
.band p{color:rgba(255,255,255,.7);max-width:50ch;margin:0 auto 2rem;font-weight:300}

/* kontakt */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px)}
.team{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:1.6rem}
.team .row{background:var(--bg);padding:16px 4px;display:flex;justify-content:space-between;align-items:baseline;gap:1rem}
.team .row b{font-weight:500}
.team .row small{color:var(--muted);font-size:.82rem}
.form{display:grid;gap:14px}
.form input,.form textarea{width:100%;padding:14px 16px;border:1px solid var(--line);background:var(--card);color:var(--fg);font-family:var(--sans);font-size:.92rem;border-radius:2px}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent)}

/* footer */
footer{background:var(--ink);color:rgba(242,238,231,.7);padding-block:64px 36px}
[data-theme="dark"] footer{background:#0A0B1E}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem}
footer .brand{color:#fff;font-size:1.5rem}
footer h5{color:#fff;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;margin-bottom:1rem;font-weight:500}
footer a{display:block;padding:.28em 0;font-size:.9rem;color:rgba(242,238,231,.65);transition:.2s}
footer a:hover{color:#fff}
.fbot{display:flex;justify-content:space-between;margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:.8rem;color:rgba(242,238,231,.45);flex-wrap:wrap;gap:1rem}
.footer-brand{display:inline-block}
.footer-logo{height:42px;width:auto;display:block}
.freg{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:5px;font-size:.78rem;color:rgba(237,238,245,.5);line-height:1.55}
.freg b{color:rgba(237,238,245,.74);font-weight:600}
.freg + .fbot{margin-top:18px;padding-top:0;border-top:0}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* atuty */
.atuty-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3.4vw,60px)}
.atut{border-top:1px solid var(--line);padding-top:1.5rem}
.atut .anum{font-family:var(--serif);font-size:1rem;color:var(--accent)}
.atut h3{font-family:var(--serif);font-weight:400;font-size:1.45rem;margin:.5rem 0 .7rem;line-height:1.15}
.atut p{color:var(--muted);font-weight:300;font-size:.98rem;line-height:1.62}

/* responsive */
@media(max-width:980px){
  .offer-grid{grid-template-columns:repeat(2,1fr)}
  .split,.contact{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .atuty-grid{grid-template-columns:1fr}
  .stones{grid-template-columns:repeat(2,1fr)}
  .trust .grid{grid-template-columns:repeat(2,1fr)}
  .gal>*{grid-column:span 12!important;grid-row:span 1!important;height:240px}
  nav.menu{display:none}.burger{display:flex}
}
@media(max-width:560px){
  .offer-grid{grid-template-columns:1fr}
  .sechead{flex-direction:column;align-items:start}
}