:root{
  --bg:#0d0f12; --bg-2:#161a1f; --bg-3:#1d2228;
  --silver:#c2c9d2; --silver-br:#e3e8ee; --steel:#8b93a0;
  --text:#e9ecf0; --muted:#8d949e; --line:#2b313a;
  --r-sm:10px; --r:14px; --r-lg:18px;
  --serif:Georgia,"Times New Roman",serif;
  --sans:"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:#0d0f12}
body{background:#0d0f12;color:#e9ecf0;font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.12;letter-spacing:.005em}
h1{font-size:clamp(34px,5vw,60px)}
h2{font-size:clamp(26px,3.6vw,40px)}
.silver{color:var(--silver-br)}
#kmd{position:fixed;inset:0;z-index:0;display:block;width:100vw;height:100vh;background:#0d0f12}
.page{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--silver);margin-bottom:18px}
.eyebrow::before{content:"";width:44px;height:1px;background:var(--silver)}

/* шапка */
header{position:sticky;top:0;z-index:60;background:rgba(13,15,18,.9);backdrop-filter:blur(9px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:80px;gap:14px}
.logo{display:flex;align-items:center;gap:14px}
.logo-anim{position:relative;width:58px;height:44px;flex:none}
.logo-anim .strip{position:absolute;top:0;bottom:0;background-image:var(--logo);background-size:58px 44px;background-repeat:no-repeat;opacity:0;transition:transform .55s cubic-bezier(.2,.8,.25,1),opacity .4s}
.logo-anim.go .strip{opacity:1;transform:none !important}
.logo-anim .flash{position:absolute;inset:-8px;border-radius:50%;background:radial-gradient(circle,rgba(227,232,238,.85),rgba(227,232,238,0) 60%);opacity:0;pointer-events:none}
.logo-anim.weld .flash{animation:weld .5s ease-out}
@keyframes weld{0%{opacity:0}25%{opacity:.9}100%{opacity:0}}
.logo .lt{line-height:1.15}
.logo .lt b{font-family:var(--serif);font-weight:400;font-size:20px;letter-spacing:.05em;display:block}
.logo .lt span{font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);display:block}
.nav-links{display:flex;gap:30px;font-size:14px;font-weight:500;letter-spacing:.04em;color:var(--muted)}
.nav-links a{position:relative;padding:4px 0;transition:color .2s;cursor:pointer}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--silver)}
.nav-phone{font-size:15px;font-weight:600;white-space:nowrap}
.nav-phone small{display:block;font-weight:400;font-size:10.5px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:22px;height:2px;background:var(--silver)}

/* виды-страницы */
.view{display:none}
.view.on{display:block;animation:vfade .35s ease}
@keyframes vfade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.hero{padding:76px 0 60px}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero h1 .thin{color:var(--steel)}
.lead{font-size:17px;color:var(--muted);max-width:540px;margin:20px 0 32px}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;cursor:pointer;border:none;font-family:var(--sans);font-weight:600;font-size:15px;padding:15px 30px;border-radius:var(--r);transition:transform .15s,background .2s,color .2s,border-color .2s}
.btn-primary{background:var(--silver);color:#11151a}
.btn-primary:hover{background:var(--silver-br);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--silver);color:var(--silver)}
.hero-photo{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 60px rgba(0,0,0,.45)}
.hero-photo img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/4.4}
.tag-otk{position:absolute;left:16px;bottom:16px;background:rgba(13,15,18,.84);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:var(--r-sm);padding:9px 13px 9px 11px;display:flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.05em}
.tag-otk .seal{width:9px;height:9px;border-radius:50%;background:#c04545;box-shadow:0 0 8px rgba(192,69,69,.7);flex:none}
.tag-otk b{color:var(--silver-br);font-weight:600}

.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(22,26,31,.78)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:32px 24px}
.stat .num{font-family:var(--serif);font-size:clamp(28px,3.2vw,42px);color:var(--silver-br)}
.stat .num small{font-size:.55em;color:var(--steel)}
.stat .lbl{font-size:12.5px;color:var(--muted);margin-top:2px}

.block{padding:76px 0}
.block.tight{padding-top:0}
.sec-head{max-width:660px;margin-bottom:42px}
.sec-head p{color:var(--muted);margin-top:13px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.card{background:rgba(22,26,31,.85);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 28px 24px;transition:border-color .25s,transform .25s;position:relative}
a.card:hover{border-color:var(--steel);transform:translateY(-3px)}
.card .mark{font-family:var(--serif);font-size:13px;color:var(--steel);letter-spacing:.14em;margin-bottom:13px;display:block}
.card h3{font-size:21px;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted)}
.card .more{display:inline-block;margin-top:15px;font-size:13.5px;color:var(--silver)}

.strip3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.strip3 .shot img,.strip3 .shot img.tall{aspect-ratio:5/4;object-fit:cover}
.shot{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);position:relative;background:var(--bg-2);align-self:start}
.shot img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s}
.shot:hover img{transform:scale(1.03)}
.shot img.tall{aspect-ratio:3/4}
.proj .ph2 img.tall{aspect-ratio:3/4}
.tcard img.tall{aspect-ratio:3/4;object-fit:cover}
.shot figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 15px 11px;font-size:12.5px;letter-spacing:.04em;color:var(--silver-br);background:linear-gradient(transparent,rgba(13,15,18,.92))}

.band{border-top:1px solid var(--line);background:rgba(18,21,26,.85)}
.obj-list{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.obj{display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;padding:20px 24px;background:rgba(22,26,31,.6);border-bottom:1px solid var(--line);transition:background .2s;cursor:pointer}
.obj:last-child{border-bottom:none}
.obj:hover{background:rgba(29,34,40,.85)}
.obj .ax{font-family:var(--serif);width:42px;height:42px;border:1px solid var(--steel);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--silver);font-size:15px}
.obj h3{font-size:18px;font-family:var(--sans);font-weight:600}
.obj p{font-size:13px;color:var(--muted)}
.obj .geo{font-size:12px;letter-spacing:.07em;text-transform:uppercase;color:var(--steel);white-space:nowrap}

.cta-band{padding:88px 0;text-align:center}
.cta-band p{color:var(--muted);max-width:520px;margin:14px auto 30px}

/* ===== 3D-витрина ===== */
.viewer{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(17,20,24,.9)}
.viewer-top{display:flex;gap:8px;flex-wrap:wrap;padding:14px;border-bottom:1px solid var(--line)}
.vbtn{cursor:pointer;border:1px solid var(--line);background:rgba(22,26,31,.9);color:var(--text);padding:10px 16px;font-size:13.5px;font-weight:600;font-family:var(--sans);border-radius:var(--r-sm);transition:.2s}
.vbtn:hover{border-color:var(--silver);color:var(--silver)}
.vbtn.active{background:var(--silver);color:#11151a;border-color:var(--silver)}
#v3d{width:100%;height:440px;display:block;touch-action:none;cursor:grab}
#v3d:active{cursor:grabbing}
.viewer-bottom{display:flex;align-items:center;gap:16px;padding:13px 16px;border-top:1px solid var(--line);flex-wrap:wrap}
.viewer-bottom label{font-size:12.5px;color:var(--muted);letter-spacing:.05em;display:flex;align-items:center;gap:10px}
input[type=range]{accent-color:#c2c9d2;width:170px}
.vhint{margin-left:auto;font-size:12px;color:var(--steel)}
.vnote{margin:10px 14px 14px;padding:10px 12px;border-left:2px solid var(--line);font-size:12.5px;line-height:1.55;color:var(--muted)}
.v3d-fail{padding:40px 20px;text-align:center;color:var(--muted);display:none}
.vwrap{position:relative}
.vhud{position:absolute;left:14px;bottom:14px;z-index:3;background:rgba(13,15,18,.82);backdrop-filter:blur(5px);border:1px solid var(--line);border-radius:999px;padding:9px 16px;font-size:12.5px;color:var(--silver-br);pointer-events:none;animation:hudpulse 2.2s ease-in-out 2;transition:opacity .5s}
.vhud.off{opacity:0}
@keyframes hudpulse{0%,100%{box-shadow:0 0 0 0 rgba(194,201,210,0)}50%{box-shadow:0 0 0 7px rgba(194,201,210,.14)}}
.ral-row{display:none;gap:8px;flex-wrap:wrap;padding:12px 14px;border-top:1px solid var(--line)}
.ral-row.show{display:flex}
.sw{cursor:pointer;width:78px;border:1px solid var(--line);border-radius:var(--r-sm);padding:5px;text-align:center;transition:border-color .2s}
.sw i{display:block;height:26px;border-radius:6px;margin-bottom:5px}
.sw small{font-size:10px;color:var(--muted);letter-spacing:.02em;line-height:1.25;display:block}
.sw.sel{border-color:var(--silver)}
.ipanel{display:none;border-top:1px solid var(--line);padding:18px 18px 16px;background:rgba(20,24,29,.92)}
.ipanel.show{display:block;animation:vfade .25s ease}
@media(max-width:760px){
  .ipanel.show{position:fixed;left:0;right:0;bottom:0;z-index:60;max-height:72vh;overflow-y:auto;
    border-top:1px solid var(--silver);border-radius:16px 16px 0 0;
    box-shadow:0 -14px 40px rgba(0,0,0,.6);animation:sheetup .28s ease}
}
@keyframes sheetup{from{transform:translateY(100%)}to{transform:translateY(0)}}
.ipanel .ih{display:flex;align-items:baseline;gap:12px}
.ipanel .ih .eyebrow{margin-bottom:0}
.ipanel .ih h3{font-size:20px}
.ipanel .ih .close{margin-left:auto;cursor:pointer;color:var(--muted);font-size:22px;line-height:1;padding:2px 8px}
.ipanel .ih .close:hover{color:var(--text)}
.ipanel .weldp{margin-top:10px;border:1px solid var(--line);border-left:3px solid #c04545;border-radius:var(--r-sm);padding:11px 14px;font-size:13.5px;color:var(--text);background:rgba(22,26,31,.9)}
.lays{margin-top:14px;display:grid;gap:8px}
.lay{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 13px;cursor:pointer;transition:border-color .2s;background:rgba(22,26,31,.7)}
.lay:hover{border-color:var(--steel)}
.lay.sel{border-color:var(--silver)}
.lay i{width:26px;height:26px;border-radius:7px;flex:none;border:1px solid rgba(255,255,255,.12)}
.lay .ln{font-size:14px;font-weight:600}
.lay .lt{font-size:12px;color:var(--muted)}
.laydetail{margin-top:11px;font-size:13.5px;color:var(--muted);min-height:20px}
.laydetail b{color:var(--silver-br)}
.ipanel .note{margin-top:12px;font-size:11.5px;color:var(--steel)}

/* этапы */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:st}
.step{background:rgba(22,26,31,.85);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.step .sn{font-family:var(--serif);font-size:14px;color:var(--steel);letter-spacing:.1em;margin-bottom:8px}
.step h3{font-size:17px;font-family:var(--sans);font-weight:600;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--muted)}

/* техника */
.tech{display:grid;grid-template-columns:1.15fr 1fr;gap:20px;align-items:stretch}.tstack{display:flex;flex-direction:column;gap:20px}.crane-card{display:flex;flex-direction:column}.crane-card>img.tall{flex:1 1 auto;min-height:0;width:100%;height:100%;object-fit:cover;aspect-ratio:auto}@media (max-width:960px){.crane-card>img.tall{flex:none;height:auto;aspect-ratio:3/4}}
.tcard{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(22,26,31,.85)}
.tcard img{width:100%;aspect-ratio:4/3;object-fit:cover}
.tcard .tb{padding:18px 20px}
.tcard h3{font-size:19px;margin-bottom:5px}
.tcard p{font-size:13.5px;color:var(--muted)}
.own-note{margin-top:18px;border:1px solid var(--line);border-radius:var(--r-sm);background:rgba(22,26,31,.85);padding:16px 20px;font-size:14.5px;color:var(--text)}

/* объекты с фото */
.proj{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:rgba(22,26,31,.85);margin-bottom:22px}
.proj .ph2{display:grid;grid-template-columns:1fr 1fr;gap:2px;align-items:start}
.proj .ph2 img{width:100%;aspect-ratio:4/2.6;object-fit:cover}
.proj .pb{padding:24px 26px}
.proj .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.proj .tag{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--silver);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.proj h3{font-size:22px;margin-bottom:6px}
.proj .geo2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel);margin-bottom:12px}
.proj p{font-size:14.5px;color:var(--muted)}

/* контакты */
.k-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.kcard{background:rgba(22,26,31,.85);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px}
.kcard .who{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--steel);margin-bottom:8px}
.kcard .nm{font-family:var(--serif);font-size:20px;margin-bottom:4px;color:var(--silver-br)}
.kcard a.tel{font-size:22px;font-weight:600;display:inline-block;margin-top:6px}
.kcard a.tel:hover{color:var(--silver)}
.kcard p{font-size:14px;color:var(--muted)}
.calc{background:rgba(22,26,31,.85);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.calc label{display:block;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:16px 0 7px}
.calc input[type=number],.calc input[type=text],.calc input[type=tel],.calc textarea{width:100%;background:#101318;border:1px solid var(--line);border-radius:var(--r-sm);color:var(--text);font-family:var(--sans);font-size:15px;padding:13px 14px;outline:none;transition:border-color .2s}
.calc input:focus,.calc textarea:focus{border-color:var(--silver)}
.chk{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:14.5px;color:var(--text);cursor:pointer}
.chk input{width:17px;height:17px;accent-color:#c2c9d2}
.calc-out{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}
.calc-out .co-row{display:flex;justify-content:space-between;font-size:14.5px;color:var(--muted);padding:4px 0}
.calc-out .co-total{display:flex;justify-content:space-between;font-family:var(--serif);font-size:24px;color:var(--silver-br);margin-top:8px}
.fine{font-size:12px;color:var(--steel);margin-top:12px}
.ok-msg{display:none;margin-top:14px;border:1px solid var(--line);border-radius:var(--r-sm);padding:13px 16px;font-size:14px;background:rgba(22,26,31,.9)}

footer{border-top:1px solid var(--line);background:rgba(13,15,18,.94);padding:52px 0 28px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:42px;margin-bottom:36px}
.foot-grid>div>p{font-size:13.5px;color:var(--muted);margin-top:13px;max-width:320px}
.fcol h4{font-family:var(--serif);font-weight:400;font-size:16px;margin-bottom:14px;color:var(--silver-br)}
.fcol a,.fcol span{display:block;font-size:14px;color:var(--muted);padding:4px 0;transition:color .2s;cursor:pointer}
.fcol a:hover{color:var(--silver)}
.fcol .who{font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--steel);margin-top:8px}
.foot-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}.view.on{animation:none}}

@media (max-width:960px){
  .tech{grid-template-columns:1fr}
  .hero .grid{grid-template-columns:1fr;gap:32px}
  .hero-photo img{aspect-ratio:16/10}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-3,.strip3,.steps,.tech,.k-grid{grid-template-columns:1fr}
  .proj .ph2{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .nav-links{position:fixed;top:80px;left:0;right:0;background:rgba(13,15,18,.98);flex-direction:column;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0;border-bottom:1px solid var(--line)}
  .burger{display:flex}
  .nav-phone small{display:none}
  .obj{grid-template-columns:42px 1fr}
  .obj .geo{grid-column:2}
  #v3d{height:340px}
}
@media (max-width:640px){
  .logo .lt span{display:none}
  .logo .lt b{font-size:17px}
  .nav-phone{font-size:13px}
  .nav{gap:8px}
}