/* ==========================================================================
   КБ-57 — BLUEPRINT. Чертёжный лист: глубокий синий, белые тонкие линии,
   размерные выноски, штамп; светлые «бумажные» секции для чтения.
   Каждый блок главной — ровно один экран.
   Unbounded (заголовки) · Onest (текст) · JetBrains Mono (подписи чертежа)
   ========================================================================== */
:root{
  --blue:#0b2a4e; --blue-2:#0e3560; --blue-3:#123f70; --blue-deep:#071c36;
  --ink:#ffffff; --ink-2:rgba(var(--ink-rgb),.78); --ink-3:rgba(var(--ink-rgb),.52);
  --line:rgba(var(--ink-rgb),.14); --line-2:rgba(var(--ink-rgb),.3); --grid:rgba(var(--ink-rgb),.055); --grid-2:rgba(var(--ink-rgb),.11);
  --cyan:#8fdcff; --cyan-soft:rgba(143,220,255,.16);
  --paper:#f2f5f8; --paper-2:#e6ebf1; --paper-ink:#0b2a4e; --paper-ink-2:#3a5a80; --paper-mute:#6b82a0; --paper-line:rgba(var(--pi-rgb),.16); --paper-grid:rgba(var(--pi-rgb),.06); --paper-acc:#1e6fd9;
  --font-d:"Unbounded","Arial Black",sans-serif; --font-b:"Onest","Segoe UI",system-ui,sans-serif; --font-m:"JetBrains Mono","Consolas",monospace;
  --wrap:1440px; --gut:clamp(20px,4vw,72px); --hdr:72px;
  --ease:cubic-bezier(.22,1,.36,1); --ease-2:cubic-bezier(.65,0,.35,1);
  --ink-rgb:255,255,255; --pi-rgb:11,42,78; --pa-rgb:30,111,217; --deep-rgb:7,28,54; --ov-rgb:4,16,32;
  --hdr-bg:rgba(9,32,60,.85); --photo-paper:#d7e0ea;
  --fold-ink:255,255,255; --fold-acc:143,220,255;
  --intro-1:#123f70; --intro-2:#071c36; --intro-ink:255,255,255; --beam:214,236,255; --glow:169,214,255;
  --z-hdr:100; --z-nav:110; --z-popup:200; --z-lb:210; --z-prog:300; --z-intro:400;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--blue)}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}
html.intro-on{overflow:hidden}
body{font-family:var(--font-b);font-size:clamp(15px,1.02vw,17px);line-height:1.6;color:var(--ink);background:var(--blue);overflow-x:clip;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(var(--grid-2) 1px,transparent 1px),linear-gradient(90deg,var(--grid-2) 1px,transparent 1px),linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px;background-position:center top}
body::after{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:radial-gradient(120% 80% at 70% 0%,var(--blue-3) 0%,var(--blue) 55%,var(--blue-deep) 100%)}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit}
input,textarea{font:inherit;color:inherit}
::selection{background:var(--cyan);color:var(--blue-deep)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
em{font-style:normal;color:var(--cyan)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);width:100%}
.skip{position:absolute;left:-9999px;top:0;z-index:var(--z-prog);background:var(--cyan);color:var(--blue-deep);padding:10px 18px}
.skip:focus{left:12px;top:12px}
.ico{width:1.1em;height:1.1em;flex:none}
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:var(--z-prog);pointer-events:none}
.progress i{display:block;height:100%;width:100%;background:var(--cyan);transform:scaleX(0);transform-origin:0 50%}
@media (hover:hover) and (pointer:fine){body{cursor:crosshair}a,button,summary,label{cursor:pointer}input,textarea{cursor:text}}

/* ---------- типографика ---------- */
h1,h2,h3,.hero__h1{font-family:var(--font-d);font-weight:500;letter-spacing:-.02em;line-height:1.05;text-wrap:balance}
h1{font-size:clamp(2.2rem,5.4vw,5.2rem)}
h2{font-size:clamp(1.6rem,3vw,2.9rem);line-height:1.08}
h3{font-size:clamp(1.05rem,1.4vw,1.35rem);font-weight:500;line-height:1.25}
h4{font-family:var(--font-b);font-weight:600;font-size:1rem;margin:1.2em 0 .5em}
p{max-width:64ch}
.big{font-size:clamp(1.1rem,1.4vw,1.35rem);line-height:1.5;font-weight:500;max-width:52ch}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-m);color:var(--cyan);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:18px}
.kicker::before{content:"";width:22px;height:1px;background:currentColor}
.sec-head{margin-bottom:clamp(28px,4vw,56px);max-width:52ch}
.sec-sub{color:var(--ink-2);margin-top:14px;max-width:48ch;font-size:1.02em}
.sec{padding:clamp(64px,8vw,120px) 0;position:relative}
.sec--screen{min-height:100vh;min-height:100dvh;display:flex;align-items:center;padding:calc(var(--hdr) + 24px) 0 40px}
.sec--alt{background:var(--paper);color:var(--paper-ink);position:relative;z-index:1}
.sec--alt::before,.about::before,.contact::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(var(--paper-grid) 1px,transparent 1px),linear-gradient(90deg,var(--paper-grid) 1px,transparent 1px);background-size:24px 24px;background-position:center top}
.sec--alt .kicker{color:var(--paper-ink-2)}
.sec--alt .sec-sub,.sec--alt p{color:var(--paper-ink-2)}
.sec--alt h2,.sec--alt h3,.sec--alt .big{color:var(--paper-ink)}
.sec--alt em{color:var(--paper-acc)}

/* ---------- кнопки и ссылки ---------- */
.btn{display:inline-flex;align-items:center;gap:.7em;white-space:nowrap;font-weight:500;font-size:.95rem;padding:.9em 1.5em;border:1px solid var(--line-2);border-radius:999px;transition:background .35s var(--ease),border-color .35s,color .35s,transform .5s var(--ease)}
.btn .ico{width:1em;height:1em;transition:transform .5s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:hover .ico{transform:translate(2px,-2px)}
.btn--accent{background:var(--ink);border-color:var(--ink);color:var(--blue-deep)}
.btn--accent:hover{background:var(--cyan);border-color:var(--cyan)}
.btn--ghost{border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--ink);background:rgba(var(--ink-rgb),.06)}
.btn--sm{padding:.65em 1.15em;font-size:.86rem}
.sec--alt .btn--accent,.contact .btn--accent{background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
.sec--alt .btn--accent:hover,.contact .btn--accent:hover{background:var(--paper-acc);border-color:var(--paper-acc)}
.sec--alt .btn--ghost{border-color:var(--paper-line);color:var(--paper-ink)}
.sec--alt .btn--ghost:hover{border-color:var(--paper-ink);background:rgba(var(--pi-rgb),.05)}
.link{display:inline-flex;align-items:center;gap:.55em;font-weight:500;padding-bottom:3px;position:relative}
.link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--cyan);transform-origin:left;transition:transform .6s var(--ease)}
.link:hover::after{transform:scaleX(.35)}
.link .ico{width:1em;height:1em;color:var(--cyan);transition:transform .5s var(--ease)}
.link:hover .ico{transform:translate(2px,-2px)}
.about .link,.sec--alt .link{color:var(--paper-ink)}
.about .link::after,.sec--alt .link::after{background:var(--paper-acc)}
.about .link .ico,.sec--alt .link .ico{color:var(--paper-acc)}

/* ---------- шапка ---------- */
.hdr{position:fixed;top:0;left:0;right:0;z-index:var(--z-hdr);transition:transform .5s var(--ease)}
.hdr::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--hdr-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);opacity:0;transition:opacity .4s}
.hdr.is-solid::before{opacity:1}
.hdr.is-hidden{transform:translateY(-100%)}
.hdr__in{height:var(--hdr);display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand__mark{width:38px;height:auto}
.brand__txt{display:flex;flex-direction:column;line-height:1.1}
.brand__txt b{font-family:var(--font-d);font-weight:600;font-size:1.05rem;letter-spacing:.02em}
.brand__txt small{font-family:var(--font-m);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:4px}
.nav{margin-left:auto}
.nav__links{display:flex;gap:4px}
.nav__links a{font-size:.92rem;font-weight:500;padding:8px 12px;color:var(--ink-2);transition:color .25s}
.nav__links a span{position:relative}
.nav__links a span::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.nav__links a:hover,.nav__links a.is-active{color:var(--ink)}
.nav__links a:hover span::after,.nav__links a.is-active span::after{transform:scaleX(1)}
.nav__foot{display:none}
.hdr__cta{display:flex;align-items:center;gap:8px}
.phone{display:inline-flex;align-items:center;gap:.6em;font-weight:500;font-size:.92rem;padding:.6em .9em;border-radius:999px;transition:background .3s}
.phone .ico{color:var(--cyan)}
.phone:hover{background:rgba(var(--ink-rgb),.08)}
.burger{display:none;width:44px;height:44px;position:relative;margin-right:-8px}
.burger i{position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);transition:transform .5s var(--ease),top .5s var(--ease)}
.burger i:nth-child(1){top:18px}.burger i:nth-child(2){top:26px}
body.menu-open .burger i:nth-child(1){top:22px;transform:rotate(45deg)}
body.menu-open .burger i:nth-child(2){top:22px;transform:rotate(-45deg)}

/* ---------- интро ---------- */
.intro{position:fixed;inset:0;z-index:var(--z-intro);background:var(--intro-2);transition:clip-path 1s var(--ease-2)}
.intro canvas{position:absolute;inset:0}
.intro.is-open{clip-path:inset(0 0 100% 0)}
.intro__skip{position:absolute;right:28px;bottom:24px;font-family:var(--font-m);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding:10px 14px;border:1px solid var(--line);border-radius:999px}
.intro__skip:hover{color:var(--ink);border-color:var(--line-2)}
html.intro-on .hero__line span,html.intro-on .hero__tail,html.intro-on .hero__sub,html.intro-on .hero__cta,html.intro-on .hero__stamp{animation-play-state:paused}

/* ---------- хиро главной: текст | чертёж корпуса ---------- */
.hero{position:relative;min-height:100vh;min-height:100dvh;display:flex;align-items:center;padding:calc(var(--hdr) + 24px) 0 40px;overflow:clip}
.hero__grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,6fr);gap:clamp(24px,4vw,64px);align-items:center;width:100%}
.hero__h1{font-size:clamp(2rem,4.2vw,4.2rem);line-height:1;letter-spacing:-.03em;font-weight:500;display:flex;flex-direction:column}
.hero__line{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.hero__line span{display:block;transform:translateY(105%);opacity:0;animation:rise 1.4s var(--ease) forwards;animation-delay:calc(.2s + var(--i) * .14s)}
@keyframes rise{to{transform:none;opacity:1}}
.hero__tail{font-size:clamp(1rem,1.5vw,1.35rem);color:var(--ink-2);margin-top:1em;max-width:none;opacity:0;animation:fade 1.2s var(--ease) .8s forwards}
@keyframes fade{to{opacity:1}}
.hero__sub{color:var(--ink-2);max-width:42ch;margin-top:clamp(20px,2.5vw,32px);opacity:0;animation:fade 1.2s var(--ease) 1s forwards}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;opacity:0;animation:fade 1.2s var(--ease) 1.15s forwards}
.hero__obj{position:relative;aspect-ratio:1/1;max-height:calc(100vh - var(--hdr) - 80px);width:100%;justify-self:end}
.hero__fold{position:absolute;inset:0}
.hero__fold canvas{display:block}
.hero__stamp{position:absolute;right:0;bottom:0;display:grid;grid-template-columns:auto auto;border:1px solid var(--line-2);font-family:var(--font-m);font-size:.64rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);background:rgba(var(--deep-rgb),.7);backdrop-filter:blur(6px);opacity:0;animation:fade 1s var(--ease) 1.6s forwards}
.hero__stamp span{padding:7px 12px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}
.hero__stamp span:nth-child(2n){border-right:0;color:var(--ink)}
.hero__stamp span:nth-last-child(-n+2){border-bottom:0}

/* ---------- услуги: список | превью (один экран) ---------- */
.six__grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:clamp(24px,4vw,72px);align-items:center}
.six .sec-head{margin-bottom:clamp(18px,2.5vw,32px)}
.six__rows{border-top:1px solid var(--line)}
.six__row{display:grid;grid-template-columns:44px minmax(0,1fr) 22px;align-items:center;gap:14px;padding:clamp(9px,1.1vw,14px) 0;border-bottom:1px solid var(--line);position:relative;color:var(--ink-2);transition:color .35s,padding-left .5s var(--ease)}
.six__row::before{content:"";position:absolute;left:-14px;right:-14px;top:-1px;bottom:0;background:rgba(var(--ink-rgb),.04);opacity:0;transition:opacity .35s}
.six__row:hover,.six__row.is-cur{color:var(--ink);padding-left:10px}
.six__row:hover::before,.six__row.is-cur::before{opacity:1}
.six__no{font-family:var(--font-m);font-size:.72rem;letter-spacing:.1em;color:var(--ink-3);transition:color .35s}
.six__row:hover .six__no,.six__row.is-cur .six__no{color:var(--cyan)}
.six__t{font-family:var(--font-d);font-weight:500;font-size:clamp(1rem,1.45vw,1.4rem);letter-spacing:-.015em;line-height:1.15}
.six__tag{display:none}
.six__img{display:none}
.six__row .ico{width:18px;height:18px;color:var(--ink-3);transition:transform .5s var(--ease),color .35s}
.six__row:hover .ico,.six__row.is-cur .ico{color:var(--cyan);transform:translate(2px,-2px)}
.six__preview{position:relative}
.six__frame{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--blue-2);box-shadow:inset 0 0 0 1px var(--line)}
.six__frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);mix-blend-mode:luminosity;opacity:.9;transition:opacity .7s var(--ease),transform 1.6s var(--ease)}
.six__frame img.is-next{opacity:0;transform:scale(1.04)}
.six__frame img.is-next.is-on{opacity:.9;transform:none}
.six__frame::before,.six__frame::after{content:"";position:absolute;z-index:2;width:16px;height:16px;border:1px solid rgba(var(--ink-rgb),.75)}
.six__frame::before{left:10px;top:10px;border-right:0;border-bottom:0}
.six__frame::after{right:10px;bottom:10px;border-left:0;border-top:0}
.six__cap{display:flex;justify-content:space-between;gap:12px;margin-top:12px;font-family:var(--font-m);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.six__cap b{color:var(--cyan);font-weight:400}
.six__capT{color:var(--ink-2)}

/* ---------- о производстве (бумага): фото в рамке | текст, цифры как размеры ---------- */
.about{background:var(--paper);color:var(--paper-ink);z-index:1}
.about .kicker{color:var(--paper-ink-2)}
.about__grid{display:grid;grid-template-columns:5fr 7fr;gap:clamp(32px,5vw,80px);align-items:center}
.about__media{position:relative;aspect-ratio:4/5;max-height:52vh;background:var(--photo-paper);overflow:hidden}
.about__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);mix-blend-mode:multiply;opacity:.9;transition:filter 1s var(--ease),opacity 1s var(--ease)}
.about__media:hover img{filter:none;mix-blend-mode:normal;opacity:1}
.about__media::before,.about__media::after{content:"";position:absolute;z-index:2;width:14px;height:14px;border:1px solid rgba(var(--pi-rgb),.7)}
.about__media::before{left:10px;top:10px;border-right:0;border-bottom:0}
.about__media::after{right:10px;bottom:10px;border-left:0;border-top:0}
.about__txt h2{font-size:clamp(1.3rem,2.1vw,2rem);margin-bottom:18px;max-width:26ch}
.about__txt p{color:var(--paper-ink-2);margin-bottom:.9em;font-size:.98em}
.facts{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;margin-top:clamp(32px,4vw,56px);padding-top:28px;border-top:1px solid var(--paper-line)}
.fact{position:relative;padding-left:16px}
.fact::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--paper-ink)}
.fact b{display:block;font-family:var(--font-d);font-weight:500;font-size:clamp(1.6rem,2.6vw,2.6rem);letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums;color:var(--paper-ink)}
.fact b i{font-style:normal;font-size:.42em;color:var(--paper-acc);margin-left:.15em}
.fact > span{display:block;margin-top:8px;font-size:.86rem;color:var(--paper-ink-2);max-width:22ch}

/* ---------- работы (образцы) ---------- */
.products__row{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,48px);margin-bottom:clamp(28px,4vw,48px)}
.prod{border-top:1px solid var(--line-2);padding-top:16px}
.prod h3{margin-bottom:8px;font-size:1.15rem}
.prod p{color:var(--ink-2);font-size:.92rem}
.works__grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.work{position:relative;display:block;aspect-ratio:4/3;overflow:hidden;background:#fff;border:1px solid var(--line)}
.work img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.work:hover img{transform:scale(1.05)}
.works__more{margin-top:28px}

/* ---------- контакты / форма ---------- */
.contact{background:var(--paper);color:var(--paper-ink);z-index:1}
.contact .kicker{color:var(--paper-ink-2)}
.contact .sec-sub{color:var(--paper-ink-2)}
.contact__grid{display:grid;grid-template-columns:7fr 5fr;gap:clamp(32px,5vw,80px);align-items:start}
.lead{background:#fff;border:1px solid var(--paper-line);padding:clamp(22px,2.6vw,36px);position:relative}
.lead::before,.lead::after{content:"";position:absolute;width:14px;height:14px;border:1px solid var(--paper-ink)}
.lead::before{left:-1px;top:-1px;border-right:0;border-bottom:0}
.lead::after{right:-1px;bottom:-1px;border-left:0;border-top:0}
.lead__head{margin-bottom:22px}
.lead__head h3{font-size:clamp(1.2rem,1.8vw,1.6rem);margin-bottom:6px}
.lead__head p{color:var(--paper-ink-2)}
.lead__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field--wide{grid-column:1/-1}
.field span{font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--paper-mute)}
.field input,.field textarea{background:var(--paper);border:1px solid var(--paper-line);padding:12px 14px;color:var(--paper-ink);transition:border-color .3s,box-shadow .3s;resize:vertical;min-width:0}
.field input::placeholder,.field textarea::placeholder{color:var(--paper-mute)}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--paper-ink);box-shadow:0 0 0 3px rgba(var(--pa-rgb),.15)}
.lead__foot{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:20px}
.lead__note{font-size:.84rem;color:var(--paper-mute)}
.lead__note a{color:var(--paper-ink);font-weight:500}
.lead__done,.lead__err{margin-top:14px;padding:12px 14px;font-size:.9rem}
.lead__done{background:rgba(var(--pa-rgb),.1);color:var(--paper-ink)}
.lead__err{border:1px solid #c0392b;color:#c0392b}
.crows{border-top:1px solid var(--paper-line)}
.crow{display:grid;grid-template-columns:20px 1fr;gap:14px;align-items:start;padding:12px 0;border-bottom:1px solid var(--paper-line)}
.crow .ico{width:18px;height:18px;color:var(--paper-acc);margin-top:4px}
.crow a{font-size:1.02rem;transition:color .25s;color:var(--paper-ink)}
.crow a:hover{color:var(--paper-acc)}
.crow small{display:block;font-family:var(--font-m);font-size:.68rem;letter-spacing:.06em;color:var(--paper-mute);margin-top:2px}
.crow span{color:var(--paper-ink-2)}
.map{margin-top:20px;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);border:1px solid var(--paper-line)}
.map iframe{width:100%;height:100%;border:0;filter:grayscale(1) contrast(.95)}
.map--big{aspect-ratio:21/9;margin-top:0}
.contact--page .kicker{margin-bottom:24px}
.popup .crows,.popup .crow{border-color:var(--line)}
.popup .crow a{color:var(--ink)}.popup .crow a:hover{color:var(--cyan)}
.popup .crow .ico{color:var(--cyan)}.popup .crow span{color:var(--ink-2)}.popup .crow small{color:var(--ink-3)}

/* ---------- футер ---------- */
.ftr{background:var(--blue-deep);padding:clamp(48px,6vw,80px) 0 28px;border-top:1px solid var(--line-2)}
.ftr__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding-bottom:clamp(28px,4vw,48px)}
.ftr__brand{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.ftr__mark{width:56px;height:auto}
.ftr__brand b{display:block;font-family:var(--font-d);font-size:1.3rem;font-weight:600}
.ftr__brand span{display:block;font-family:var(--font-m);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:6px}
.ftr__h{display:block;font-family:var(--font-m);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:18px}
.ftr__col a,.ftr__col li,.ftr__col p{display:block;color:var(--ink-2);font-size:.95rem;margin-bottom:9px;transition:color .25s}
.ftr__col a:hover{color:var(--cyan)}
.ftr__col ul li{margin:0}.ftr__col ul a{margin-bottom:9px}
.ftr__plain li{color:var(--ink-3)}
.ftr__col--brand > a{font-size:1.05rem;color:var(--ink)}
.ftr__legal{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--line);font-size:.78rem;color:var(--ink-3)}
.mbar{display:none}

/* ---------- попап ---------- */
.popup{position:fixed;inset:0;z-index:var(--z-popup);display:flex;align-items:center;justify-content:center;padding:20px}
.popup[hidden]{display:none}
.popup__bg{position:absolute;inset:0;background:rgba(var(--ov-rgb),.8);backdrop-filter:blur(6px)}
.popup__card{position:relative;width:min(760px,100%);display:grid;grid-template-columns:200px 1fr;background:var(--blue-2);border:1px solid var(--line-2);overflow:hidden;animation:pop .6s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.98)}}
.popup__side{background:var(--blue-deep);padding:32px 24px;display:flex;flex-direction:column;justify-content:space-between;gap:32px}
.popup__mark{width:64px;height:auto}
.popup__side span{font-family:var(--font-m);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.popup__body{padding:28px 32px}
.popup__x{position:absolute;right:10px;top:10px;width:40px;height:40px;display:grid;place-items:center;color:var(--ink-2);border-radius:50%}
.popup__x:hover{background:rgba(var(--ink-rgb),.08);color:var(--ink)}

/* ---------- лайтбокс ---------- */
.lightbox{position:fixed;inset:0;z-index:var(--z-lb);background:rgba(var(--ov-rgb),.95);display:flex;align-items:center;justify-content:center;padding:56px}
.lightbox[hidden]{display:none}
.lightbox figure{max-width:100%;max-height:100%;display:flex;flex-direction:column;align-items:center;gap:12px;animation:pop .5s var(--ease)}
.lightbox__img{max-width:min(1400px,100%);max-height:calc(100dvh - 140px);object-fit:contain;background:#fff}
.lightbox figcaption{font-family:var(--font-m);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.lightbox__x,.lightbox__nav{position:absolute;width:48px;height:48px;display:grid;place-items:center;color:var(--ink-2);border:1px solid var(--line-2);border-radius:50%;transition:background .3s,color .3s}
.lightbox__x:hover,.lightbox__nav:hover{background:var(--ink);border-color:var(--ink);color:var(--blue-deep)}
.lightbox__x{right:20px;top:20px}
.lightbox__nav{top:50%;transform:translateY(-50%)}
.lightbox__nav--prev{left:20px}.lightbox__nav--prev .ico{transform:rotate(180deg)}
.lightbox__nav--next{right:20px}

/* ---------- хиро подстраниц: текст | фото в рамке (один экран) ---------- */
.phero{min-height:100vh;min-height:100dvh;display:flex;align-items:center;padding:calc(var(--hdr) + 24px) 0 40px;border-bottom:1px solid var(--line)}
.phero__grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:clamp(32px,5vw,80px);align-items:center;width:100%}
.phero h1{font-size:clamp(1.9rem,3.8vw,3.6rem);letter-spacing:-.03em;max-width:14ch}
.phero__tag{margin-top:20px;color:var(--ink-2);font-size:1.02rem;max-width:44ch}
.phero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.phero__media{position:relative;aspect-ratio:4/3;max-height:calc(100vh - var(--hdr) - 80px);overflow:hidden;background:var(--blue-2);box-shadow:inset 0 0 0 1px var(--line)}
.phero__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);mix-blend-mode:luminosity;opacity:.9;transition:filter 1.2s var(--ease),opacity 1.2s var(--ease)}
.phero__media:hover img{filter:none;mix-blend-mode:normal;opacity:1}
.phero__media::before,.phero__media::after{content:"";position:absolute;z-index:2;width:16px;height:16px;border:1px solid rgba(var(--ink-rgb),.75)}
.phero__media::before{left:10px;top:10px;border-right:0;border-bottom:0}
.phero__media::after{right:10px;bottom:10px;border-left:0;border-top:0}
.phero--plain{min-height:auto;padding-top:calc(var(--hdr) + clamp(56px,9vw,120px));padding-bottom:clamp(36px,5vw,64px)}
.phero--plain .phero__grid{grid-template-columns:1fr}

/* ---------- сплит-блоки ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:clamp(32px,6vw,100px);align-items:start}
.split--wide{grid-template-columns:4fr 8fr}
.split .sec-head{margin-bottom:0}
.split__txt p{margin-bottom:1em;color:var(--ink-2)}
.split__txt .big{color:var(--ink)}
.sec--alt .split__txt p{color:var(--paper-ink-2)}
.sec--alt .split__txt .big{color:var(--paper-ink)}
.box{border:1px solid var(--paper-line);padding:24px 26px;background:#fff}
.box h4{margin:0 0 14px;font-family:var(--font-d);font-weight:500;font-size:1rem}
.press__txt{margin-top:28px}
.press__txt p{color:var(--paper-ink-2);margin-bottom:1em;max-width:52ch}

/* ---------- преимущества ---------- */
.advs{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px)}
.advs--5{grid-template-columns:repeat(6,1fr)}
.advs--5 .adv{grid-column:span 2}
.advs--5 .adv:nth-child(4),.advs--5 .adv:nth-child(5){grid-column:span 3}
.adv{background:#fff;border:1px solid var(--paper-line);display:flex;flex-direction:column;gap:12px;padding-bottom:22px;transition:transform .7s var(--ease),box-shadow .7s var(--ease)}
.adv:hover{transform:translateY(-4px);box-shadow:0 24px 40px -24px rgba(var(--pi-rgb),.35)}
.adv__media{aspect-ratio:3/2;overflow:hidden;background:var(--photo-paper)}
.adv__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);mix-blend-mode:multiply;opacity:.9;transition:filter 1s var(--ease),opacity 1s var(--ease),transform 1.6s var(--ease)}
.adv:hover .adv__media img{filter:none;mix-blend-mode:normal;opacity:1;transform:scale(1.04)}
.adv__no{font-family:var(--font-m);font-size:.7rem;letter-spacing:.14em;color:var(--paper-acc);padding:12px 22px 0}
.adv__big{font-family:var(--font-d);font-weight:500;font-size:2.1rem;letter-spacing:-.03em;line-height:1;padding:12px 22px 0;color:var(--paper-ink)}
.adv__big i{font-style:normal;font-size:.4em;color:var(--paper-acc);margin-left:.2em}
.adv p{padding:0 22px;color:var(--paper-ink);font-size:1rem;line-height:1.45;max-width:none}

/* ---------- таблица ---------- */
.tbl{width:100%;border-collapse:collapse}
.tbl th{font-family:var(--font-m);font-weight:400;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);text-align:left;padding:0 0 14px;border-bottom:1px solid var(--line-2)}
.tbl th:last-child,.tbl td:last-child{text-align:right}
.tbl td{padding:20px 0;border-bottom:1px solid var(--line);font-size:1.05rem;transition:color .3s}
.tbl td.num{font-family:var(--font-d);font-weight:500;font-size:clamp(1.3rem,2vw,1.8rem);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.tbl tr:hover td{color:var(--cyan)}

/* ---------- карточки продукции / видов сварки ---------- */
.pcards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px);margin-top:clamp(24px,3vw,40px)}
.pcard{display:block}
.pcard__media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#fff;box-shadow:inset 0 0 0 1px var(--line);margin-bottom:16px}
.pcard__media img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.pcard:hover .pcard__media img{transform:scale(1.04)}
.pcard h3{font-size:1.15rem;display:flex;gap:12px;align-items:baseline}
.pcard h3 span{font-family:var(--font-m);font-size:.7rem;letter-spacing:.12em;color:var(--cyan)}
.pcard p{color:var(--ink-2);font-size:.95rem;margin-top:8px}
.sec--alt .pcard__media{box-shadow:inset 0 0 0 1px var(--paper-line);background:var(--photo-paper)}
.sec--alt .pcard__media img{filter:grayscale(1) contrast(1.05);mix-blend-mode:multiply;opacity:.9;transition:filter 1s var(--ease),opacity 1s var(--ease),transform 1.4s var(--ease)}
.sec--alt .pcard:hover .pcard__media img{filter:none;mix-blend-mode:normal;opacity:1}
.sec--alt .pcard h3 span{color:var(--paper-acc)}
.sec--alt .pcard p{color:var(--paper-ink-2)}

/* ---------- операции (аккордеон) ---------- */
.ops{border-top:1px solid var(--paper-line)}
.op{border-bottom:1px solid var(--paper-line)}
.op summary{list-style:none;display:grid;grid-template-columns:48px 1fr 32px;align-items:center;gap:16px;padding:22px 0;cursor:pointer}
.op summary::-webkit-details-marker{display:none}
.op__no{font-family:var(--font-m);color:var(--paper-mute);font-size:.74rem;transition:color .3s}
.op[open] .op__no,.op summary:hover .op__no{color:var(--paper-acc)}
.op__t{font-family:var(--font-d);font-weight:500;font-size:clamp(1.05rem,1.6vw,1.4rem);letter-spacing:-.015em;color:var(--paper-ink)}
.op__plus{display:grid;place-items:center;width:32px;height:32px;border:1px solid var(--paper-line);border-radius:50%;color:var(--paper-ink-2);transition:transform .6s var(--ease),background .3s,color .3s}
.op[open] .op__plus{transform:rotate(45deg);background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
.op__body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .7s var(--ease)}
.op[open] .op__body{grid-template-rows:1fr}
.op__body > div{overflow:hidden;padding-left:64px}
.op[open] .op__body > div{padding-bottom:28px}
.op__body p{color:var(--paper-ink-2);margin-bottom:.8em}
.op__body h4{color:var(--paper-ink)}
.ticks li{position:relative;padding-left:22px;color:var(--ink-2);margin-bottom:8px}
.ticks li::before{content:"";position:absolute;left:0;top:.75em;width:10px;height:1px;background:var(--cyan)}
.sec--alt .ticks li,.op .ticks li{color:var(--paper-ink-2)}
.sec--alt .ticks li::before,.op .ticks li::before{background:var(--paper-acc)}

/* ---------- нумерованные списки ---------- */
.nums{counter-reset:n}
.nums li{counter-increment:n;position:relative;padding:12px 0 12px 44px;border-bottom:1px solid var(--paper-line);color:var(--paper-ink-2)}
.nums li::before{content:counter(n,decimal-leading-zero);position:absolute;left:0;top:13px;font-family:var(--font-m);font-size:.74rem;color:var(--paper-acc)}
.nums--big li{padding:22px 0 22px 64px;font-size:clamp(1.05rem,1.5vw,1.35rem);line-height:1.4;color:var(--ink);border-color:var(--line)}
.nums--big li::before{top:26px;font-size:.86rem;color:var(--cyan)}
.sec--alt .nums--big li{color:var(--paper-ink);border-color:var(--paper-line)}
.sec--alt .nums--big li::before{color:var(--paper-acc)}

/* ---------- галереи ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery--4{grid-template-columns:repeat(4,1fr)}
.g{display:block;position:relative;aspect-ratio:4/3;overflow:hidden;background:#fff;box-shadow:inset 0 0 0 1px var(--line)}
.g img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.g:hover img{transform:scale(1.05)}
.g::before,.g::after{content:"";position:absolute;z-index:2;width:10px;height:10px;border:1px solid rgba(var(--ink-rgb),.8);opacity:0;transition:opacity .4s}
.g::before{left:6px;top:6px;border-right:0;border-bottom:0}
.g::after{right:6px;bottom:6px;border-left:0;border-top:0}
.g:hover::before,.g:hover::after{opacity:1}
.sec--alt .g{box-shadow:inset 0 0 0 1px var(--paper-line)}

/* ---------- принципы / прочее ---------- */
.principles__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(20px,3vw,40px)}
.prin{border-top:1px solid var(--paper-ink);padding-top:22px}
.prin span{font-family:var(--font-m);color:var(--paper-acc);font-size:.72rem;display:block;margin-bottom:14px}
.prin h3{margin-bottom:10px;font-size:clamp(1.15rem,1.7vw,1.5rem)}
.prin p{color:var(--paper-ink-2)}
.closing{margin-top:clamp(36px,5vw,64px);font-family:var(--font-d);font-weight:400;font-size:clamp(1.05rem,1.5vw,1.4rem);line-height:1.35;max-width:38ch;color:var(--paper-ink)}
.next{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding:clamp(28px,4vw,48px) 0;border-top:1px solid var(--line);margin-bottom:clamp(40px,6vw,80px)}
.next .kicker{margin:0}
.next__t{font-family:var(--font-d);font-weight:500;font-size:clamp(1.4rem,3vw,2.6rem);letter-spacing:-.025em;display:flex;align-items:center;gap:.4em;line-height:1.05}
.next__t .ico{width:.6em;height:.6em;color:var(--cyan);transition:transform .5s var(--ease)}
.next:hover .next__t .ico{transform:translate(4px,-4px)}

/* ---------- появление ---------- */
@media (prefers-reduced-motion:no-preference){
  .rv{opacity:0;transform:translateY(18px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease);transition-delay:calc(var(--d,0) * .07s)}
  .rv.in{opacity:1;transform:none}
  .rv-d1{transition-delay:.12s}.rv-d2{transition-delay:.24s}.rv-d3{transition-delay:.36s}
}
body.static .rv,body.static .hero__line span,body.static .hero__tail,body.static .hero__sub,body.static .hero__cta,body.static .hero__stamp{opacity:1;transform:none;animation:none}

/* ==========================================================================
   Адаптив
   ========================================================================== */
@media (max-width:1100px){.works__grid{grid-template-columns:repeat(4,1fr)}.works__grid .work:nth-child(5){display:none}}
@media (max-width:960px){
  :root{--hdr:64px}
  .nav{position:fixed;inset:0;top:var(--hdr);background:var(--blue-deep);z-index:var(--z-nav);padding:24px var(--gut) 40px;display:flex;flex-direction:column;justify-content:space-between;transform:translateX(100%);visibility:hidden;transition:transform .6s var(--ease),visibility 0s .6s}
  body.menu-open .nav{transform:none;visibility:visible;transition:transform .6s var(--ease)}
  body.menu-open{overflow:hidden}
  .nav__links{flex-direction:column;gap:0}
  .nav__links a{font-family:var(--font-d);font-size:clamp(1.6rem,7vw,2.4rem);letter-spacing:-.02em;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav__links a span::after{display:none}
  .nav__foot{display:flex;flex-direction:column;gap:10px;font-size:1rem;color:var(--ink-2)}
  .nav__foot span{color:var(--ink-3);font-size:.84rem}
  .phone span{display:none}.phone{padding:.6em}.hdr .btn--sm{display:none}.burger{display:block}
  .sec--screen,.hero,.phero{min-height:auto;padding-top:calc(var(--hdr) + 32px);padding-bottom:48px}
  .hero__grid{grid-template-columns:1fr;gap:12px}
  .hero__obj{order:-1;aspect-ratio:4/3;max-height:42vh;width:100%}
  .hero__stamp{display:none}
  .hero__h1{font-size:clamp(2.1rem,9vw,3.6rem)}
  /* услуги на мобильном — карточки с фото */
  .six__grid{grid-template-columns:1fr}
  .six__preview{display:none}
  .six__rows{border:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .six__row{grid-template-columns:1fr;grid-template-areas:"img" "no" "t" "tag";gap:6px;padding:0 0 14px;border:1px solid var(--line);color:var(--ink)}
  .six__row::before{display:none}
  .six__row:hover,.six__row.is-cur{padding-left:0}
  .six__img{display:block;grid-area:img;aspect-ratio:16/10;overflow:hidden;background:var(--blue-2);margin-bottom:6px}
  .six__img img{width:100%;height:100%;object-fit:cover;filter:grayscale(1);mix-blend-mode:luminosity;opacity:.9}
  .six__no{grid-area:no;padding:0 14px}
  .six__t{grid-area:t;padding:0 14px;font-size:1.05rem}
  .six__tag{display:block;grid-area:tag;padding:0 14px;font-size:.8rem;color:var(--ink-3)}
  .six__row .ico{display:none}
  .about__grid,.contact__grid,.split,.split--wide,.phero__grid{grid-template-columns:1fr;gap:32px}
  .phero__media,.about__media{aspect-ratio:16/10;max-height:none}
  .facts{grid-template-columns:repeat(3,1fr)}
  .products__row,.advs,.pcards,.advs--5{grid-template-columns:1fr 1fr}
  .advs--5 .adv,.advs--5 .adv:nth-child(4),.advs--5 .adv:nth-child(5){grid-column:auto}
  .principles__grid{grid-template-columns:1fr}
  .gallery,.gallery--4{grid-template-columns:repeat(3,1fr);gap:10px}
  .works__grid{grid-template-columns:repeat(3,1fr)}.works__grid .work:nth-child(n+4){display:none}
  .ftr__grid{grid-template-columns:1fr 1fr}
  .popup__card{grid-template-columns:1fr}
  .popup__side{flex-direction:row;align-items:center;padding:20px 24px}
  .lightbox{padding:16px}.lightbox__nav{top:auto;bottom:16px;transform:none}.lightbox__img{max-height:calc(100dvh - 120px)}
  .op__body > div{padding-left:0}
}
@media (max-width:640px){
  body{font-size:15px}
  .sec{padding:56px 0}
  .six__rows,.products__row,.advs,.pcards,.advs--5{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr;gap:20px}.fact b{font-size:1.9rem}
  .lead__grid{grid-template-columns:1fr}.lead{padding:20px}.lead__foot .btn{width:100%;justify-content:center}
  .gallery,.gallery--4,.works__grid{grid-template-columns:1fr 1fr;gap:8px}
  .works__grid .work:nth-child(n+4){display:block}.works__grid .work:nth-child(n+5){display:none}
  .ftr__grid{grid-template-columns:1fr}
  .map--big{aspect-ratio:4/3}
  .tbl td{padding:14px 0}
  .op summary{grid-template-columns:36px 1fr 28px;padding:16px 0}
  .nums--big li{padding-left:44px;font-size:1rem}
  .hero__obj{max-height:38vh}
  .mbar{position:fixed;left:12px;right:12px;bottom:12px;z-index:var(--z-hdr);display:grid;grid-template-columns:auto 1fr;gap:8px;padding:8px;background:rgba(var(--deep-rgb),.92);backdrop-filter:blur(14px);border:1px solid var(--line-2);transform:translateY(130%);transition:transform .6s var(--ease)}
  .mbar.is-on{transform:none}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:.5em;font-weight:500;font-size:.9rem;padding:12px 16px}
  .mbar a:first-child{border:1px solid var(--line-2)}.mbar a:first-child .ico{color:var(--cyan)}
  .mbar__cta{background:var(--ink);color:var(--blue-deep)}.mbar__cta .ico{width:1em;height:1em}
  body.menu-open .mbar{transform:translateY(130%)}
}

/* ---------- кнопки-иконки в шапке, тема, поиск ---------- */
.ibtn{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;color:var(--ink-2);transition:background .3s,color .3s;position:relative}
.ibtn:hover{background:rgba(var(--ink-rgb),.08);color:var(--ink)}
.ibtn .ico{width:19px;height:19px}
.ibtn__sun,.ibtn__moon{position:absolute;inset:0;display:grid;place-items:center;transition:opacity .4s,transform .6s var(--ease)}
.ibtn__sun{opacity:0;transform:rotate(-90deg) scale(.6)}
html[data-theme="light"] .ibtn__sun{opacity:1;transform:none}
html[data-theme="light"] .ibtn__moon{opacity:0;transform:rotate(90deg) scale(.6)}
.search{position:fixed;inset:0;z-index:var(--z-popup);display:flex;align-items:flex-start;justify-content:center;padding:clamp(60px,12vh,140px) 20px 20px}
.search[hidden]{display:none}
.search__bg{position:absolute;inset:0;background:rgba(var(--ov-rgb),.82);backdrop-filter:blur(8px)}
.search__card{position:relative;width:min(760px,100%);background:var(--blue-2);border:1px solid var(--line-2);animation:pop .5s var(--ease);max-height:calc(100vh - 100px);display:flex;flex-direction:column}
.search__bar{display:flex;align-items:center;gap:14px;padding:6px 10px 6px 20px;border-bottom:1px solid var(--line)}
.search__bar > .ico{width:20px;height:20px;color:var(--cyan)}
.search__input{flex:1;background:none;border:0;padding:16px 0;font-size:1.1rem;color:var(--ink);min-width:0}
.search__input:focus{outline:0}
.search__input::placeholder{color:var(--ink-3)}
.search__x{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;color:var(--ink-2)}
.search__x:hover{background:rgba(var(--ink-rgb),.08)}
.search__hint{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:14px 20px;font-family:var(--font-m);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.search__hint button{font:inherit;color:var(--ink-2);border:1px solid var(--line);padding:5px 10px;border-radius:999px;transition:border-color .3s,color .3s}
.search__hint button:hover{border-color:var(--cyan);color:var(--ink)}
.search__res{overflow:auto;border-top:1px solid var(--line)}
.search__res:empty{display:none}
.search__item{display:block;padding:14px 20px;border-bottom:1px solid var(--line);transition:background .25s}
.search__item:hover,.search__item.is-act{background:rgba(var(--ink-rgb),.05)}
.search__item b{display:block;font-weight:500;font-size:.98rem;margin-bottom:3px}
.search__item span{display:block;color:var(--ink-2);font-size:.88rem;line-height:1.45}
.search__item mark{background:var(--cyan-soft);color:var(--cyan);padding:0 2px}
.search__item small{display:block;font-family:var(--font-m);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:6px}
.search__empty{padding:24px 20px;color:var(--ink-3)}

/* ---------- светлая тема (белый чертёжный лист) ---------- */
html[data-theme="light"]{
  --fold-ink:11,42,78; --fold-acc:30,111,217; --intro-1:#ffffff; --intro-2:#e6ebf1; --intro-ink:11,42,78; --beam:30,111,217; --glow:30,111,217;
  --blue:#f2f5f8; --blue-2:#ffffff; --blue-3:#e6ebf1; --blue-deep:#e6ebf1;
  --ink:#0b2a4e; --ink-2:#3a5a80; --ink-3:#6b82a0;
  --line:rgba(var(--pi-rgb),.14); --line-2:rgba(var(--pi-rgb),.3); --grid:rgba(var(--pi-rgb),.05); --grid-2:rgba(var(--pi-rgb),.1);
  --cyan:#1e6fd9; --cyan-soft:rgba(var(--pa-rgb),.12);
  --paper:#ffffff; --paper-2:#eef2f6;
}
html[data-theme="light"] body::after{background:radial-gradient(120% 80% at 70% 0%,#ffffff 0%,#f2f5f8 55%,#e6ebf1 100%)}
html[data-theme="light"] .hdr::before{background:rgba(242,245,248,.86)}
html[data-theme="light"] .btn--accent{background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
html[data-theme="light"] .btn--accent:hover{background:var(--paper-acc);border-color:var(--paper-acc)}
html[data-theme="light"] .ibtn:hover,html[data-theme="light"] .phone:hover,html[data-theme="light"] .search__x:hover{background:rgba(var(--pi-rgb),.06)}
html[data-theme="light"] .six__frame img,html[data-theme="light"] .phero__media img{mix-blend-mode:multiply}
html[data-theme="light"] .six__frame,html[data-theme="light"] .phero__media{background:var(--photo-paper)}
html[data-theme="light"] .six__frame::before,html[data-theme="light"] .six__frame::after,html[data-theme="light"] .phero__media::before,html[data-theme="light"] .phero__media::after{border-color:rgba(var(--pi-rgb),.7)}
html[data-theme="light"] .work{border-color:var(--paper-line)}
html[data-theme="light"] .g::before,html[data-theme="light"] .g::after{border-color:rgba(var(--pi-rgb),.7)}
html[data-theme="light"] .hero__stamp{background:rgba(var(--ink-rgb),.8)}
html[data-theme="light"] .ftr{background:#e6ebf1}
html[data-theme="light"] .popup__bg,html[data-theme="light"] .search__bg{background:rgba(var(--pi-rgb),.55)}
html[data-theme="light"] .lightbox{background:rgba(242,245,248,.96)}
@media (max-width:960px){html[data-theme="light"] .nav{background:var(--paper)}}
html[data-theme="light"] .mbar{background:rgba(var(--ink-rgb),.92)}
html[data-theme="light"] .mbar__cta{background:var(--paper-ink);color:#fff}
html[data-theme="light"] .search__item mark{color:var(--paper-acc)}
html[data-theme="light"] .intro{background:#f2f5f8}
html[data-theme="light"] .about,html[data-theme="light"] .contact,html[data-theme="light"] .sec--alt{background:#ffffff}

/* ---------- шапка: без переносов на средних экранах ---------- */
.nav__links a,.phone,.btn{white-space:nowrap}
@media (max-width:1320px){.phone span{display:none}.phone{padding:.6em}}
@media (max-width:1180px){.brand__txt small{display:none}.nav__links a{padding:8px 9px;font-size:.88rem}.hdr__in{gap:18px}}

/* ---------- фото — всегда в цвете (решение клиента 11.09) ---------- */
.card__media img,.six__frame img,.six__frame img.is-next.is-on,.six__img img,.phero__media img,.about__media img,.adv__media img,.pcard__media img,.sec--alt .pcard__media img,.frame img,.sec--alt .frame img{filter:none!important;mix-blend-mode:normal!important;opacity:1!important}
.six__frame img.is-next{opacity:0!important}
.six__frame img.is-next.is-on{opacity:1!important}
/* подсветка строки услуги не перекрывает текст */
.six__row{z-index:0}
.six__row::before{z-index:-1}

/* ==========================================================================
   Блоки по структуре оригинала (11.09): верхняя полоса, иконки у логотипа,
   карточки услуг, контакты, попап с картинкой
   ========================================================================== */
:root{--top:0px}
.hdr{--hdr-row:72px}
.topbar{height:var(--top);border-bottom:1px solid var(--line);font-size:.78rem;color:var(--ink-3);transition:height .4s var(--ease),opacity .4s}
.topbar__in{height:100%;display:flex;align-items:center;justify-content:flex-end;gap:28px}
.topbar__item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.topbar__item .ico{width:13px;height:13px;color:var(--cyan)}
.hdr.is-solid .topbar{height:0;opacity:0;overflow:hidden;border-bottom-color:transparent}
.hero,.phero,.sec--screen{padding-top:calc(var(--hdr) + var(--top) + 24px)}
.brand__icons{display:flex;align-items:center;gap:10px;margin-left:14px;padding-left:16px;border-left:1px solid var(--line-2);color:var(--ink-2)}
.brand__icons svg{width:26px;height:26px}
.brand:hover .brand__icons{color:var(--ink)}
@media (max-width:1240px){.brand__icons{display:none}}
@media (max-width:960px){.topbar{display:none}.hero,.phero,.sec--screen{padding-top:calc(var(--hdr) + 28px)}}

/* главная */
.hero__h1{font-size:clamp(1.9rem,3.5vw,3.5rem);line-height:1.06}
.hero__sub{animation-delay:.7s}
.intro-head{display:grid;grid-template-columns:4fr 8fr;gap:clamp(24px,5vw,80px);align-items:start;margin-bottom:clamp(32px,4vw,56px)}
.intro-head .sec-head{margin:0}
.intro-head__txt{color:var(--ink-2);font-size:1.02em;max-width:70ch}
.lead-txt{font-size:clamp(1.05rem,1.35vw,1.3rem);line-height:1.55;max-width:70ch;color:var(--ink)}
.sec--alt .lead-txt{color:var(--paper-ink)}
.lead-block p{font-size:clamp(1.02rem,1.25vw,1.2rem);line-height:1.6;max-width:72ch;margin-bottom:1em;color:var(--ink)}
.sec--alt .lead-block p{color:var(--paper-ink)}
.lead-block + .gallery{margin-top:clamp(28px,4vw,48px)}

/* карточки услуг */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.6vw,22px)}
.sec--alt .cards,.page-services .cards{grid-template-columns:repeat(3,1fr)}
.card{display:flex;flex-direction:column;border:1px solid var(--line);background:rgba(var(--ink-rgb),.02);transition:border-color .5s,transform .7s var(--ease)}
.card:hover{border-color:var(--line-2);transform:translateY(-4px)}
.card__media{display:block;aspect-ratio:4/3;overflow:hidden;background:var(--blue-2)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform 1.6s var(--ease)}
.card:hover .card__media img{transform:scale(1.05)}
.card__title{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;font-family:var(--font-d);font-weight:500;font-size:clamp(.95rem,1.15vw,1.12rem);line-height:1.2}
.card__title .ico{width:18px;height:18px;flex:none;color:var(--cyan);transition:transform .5s var(--ease)}
.card:hover .card__title .ico{transform:translate(2px,-2px)}
.sec--alt .card{border-color:var(--paper-line);background:#fff;color:var(--paper-ink)}
.sec--alt .card__title .ico{color:var(--paper-ink)}

/* контакты главной */
.contact-min__grid{display:grid;grid-template-columns:5fr 7fr;gap:clamp(24px,4vw,64px);align-items:stretch}
.contact-min .map{margin:0;aspect-ratio:auto;min-height:360px}
.crows--lg .crow{padding:16px 0}
.crows--lg .crow a,.crows--lg .crow span{font-size:1.08rem}

/* контакты: форма и «мы на связи» */
.narrow{max-width:760px}
.lead__head h2{font-size:clamp(1.4rem,2.2vw,2rem);margin-bottom:8px}
.online{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,64px)}
.online__h{font-family:var(--font-m);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--paper-mute);margin-bottom:14px}
.online__col p{font-size:1.1rem;margin-bottom:8px;color:var(--paper-ink)}
.online__col a{font-weight:500}
.online__col a:hover{text-decoration:underline}
.map--big{margin-top:28px}

/* подвал */
.ftr__h--mt{margin-top:26px}
.crows--ftr{border:0}
.crows--ftr .crow{border:0;padding:6px 0;grid-template-columns:16px 1fr;gap:10px}
.crows--ftr .crow .ico{width:15px;height:15px;color:var(--cyan)}
.crows--ftr .crow a,.crows--ftr .crow span{color:var(--ink-2);font-size:.95rem}
.crows--ftr .crow small{color:var(--ink-3)}
.ftr__legal p{max-width:none}

/* попап с картинкой, как в оригинале */
.popup__card{grid-template-columns:minmax(0,5fr) minmax(0,6fr)}
.popup__ill{background:var(--blue-deep)}
.popup__ill img{width:100%;height:100%;object-fit:cover}
.popup__caption{font-family:var(--font-d);font-size:1.2rem;margin-bottom:12px}
@media (max-width:960px){.popup__ill{display:none}.popup__card{grid-template-columns:1fr}}

/* преимущества: фото + подпись */
.adv{margin:0}
.adv figcaption{padding:14px 20px 0;color:var(--paper-ink);font-size:1rem;line-height:1.45}
.ticks--lg li{font-size:clamp(1.02rem,1.3vw,1.2rem);padding-left:28px;margin-bottom:14px}
.ticks--lg li::before{top:.8em}
.gallery--3{grid-template-columns:repeat(3,1fr)}
.box ul.ticks li{color:var(--paper-ink-2)}

@media (max-width:1100px){.cards{grid-template-columns:repeat(3,1fr)}}
@media (max-width:960px){.intro-head,.contact-min__grid,.online{grid-template-columns:1fr}.cards,.sec--alt .cards,.page-services .cards{grid-template-columns:1fr 1fr}.contact-min .map{min-height:300px}}
@media (max-width:560px){.cards,.sec--alt .cards,.page-services .cards{grid-template-columns:1fr}.gallery--3{grid-template-columns:1fr 1fr}}
/* форма — всегда тёмный текст на белой карточке, в любой секции и варианте */
.lead{color:var(--paper-ink)}
.lead .lead__head h2,.lead .lead__head h3{color:var(--paper-ink)}
.lead .lead__head p{color:var(--paper-ink-2)}
.lead .btn--accent{background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
.lead .btn--accent:hover{background:transparent;color:var(--paper-ink);border-color:var(--paper-ink)}
.lead__done a{color:var(--paper-ink);font-weight:500}

/* описания карточек услуг (страница «Услуги», как в оригинале) */
.card__desc{display:block;padding:0 18px 18px;margin-top:-6px;font-size:.92rem;line-height:1.5;color:var(--ink-2)}
.sec--alt .card__desc{color:var(--paper-ink-2)}
.adv figcaption b{display:block;font-family:var(--font-d);font-weight:500;font-size:1.05rem;margin-bottom:6px;color:var(--paper-ink)}
.crow__note{color:var(--ink-3);font-size:.9em}
.sec--alt .crow__note,.contact .crow__note,.contact-min .crow__note{color:var(--paper-mute)}
/* телефоны в подвале — одной строкой, как в оригинале */
.ftr__col .crow a{display:inline;margin:0}
.ftr__col .crow div{line-height:1.5}
/* длинные слова в заголовках не вылезают за экран */
h1,h2,.hero__h1,.phero h1{overflow-wrap:break-word;hyphens:manual}
@media (max-width:640px){
  .hero__h1{font-size:clamp(1.2rem,6vw,2rem);letter-spacing:-.025em}
  .phero h1{font-size:clamp(1.3rem,6.4vw,2.2rem)}
}


/* ==========================================================================
   ЧЕРТЁЖНЫЕ ЛИСТЫ НА ЗАДНЕМ ПЛАНЕ (webp с прозрачностью, белые линии)
   ========================================================================== */
.draft{position:absolute;inset:-6% 0;pointer-events:none;z-index:0;background:var(--img) center/cover no-repeat;opacity:0;transition:opacity 1.6s var(--ease);will-change:transform;
  -webkit-mask:linear-gradient(90deg,rgba(0,0,0,.25) 0,rgba(0,0,0,.55) 30%,#000 55%);mask:linear-gradient(90deg,rgba(0,0,0,.25) 0,rgba(0,0,0,.55) 30%,#000 55%)}
.draft.in{opacity:var(--o,.28)}
.draft--soft{--o:.17}
.draft--right{background-position:right center}
.draft--hero{background-size:auto 118%;background-position:80% 50%}
/* на «бумаге» и в светлой теме линии тушью */
.sec--alt .draft,.contact-min .draft,html[data-v="2"] .draft{filter:invert(1)}
html[data-v="2"] .draft.in{opacity:calc(var(--o,.28) * .75)}
.hero>.wrap,.phero>.wrap,.sec>.wrap{position:relative;z-index:1}
.hero .draft{-webkit-mask:linear-gradient(90deg,rgba(0,0,0,.18) 0,rgba(0,0,0,.4) 38%,#000 62%);mask:linear-gradient(90deg,rgba(0,0,0,.18) 0,rgba(0,0,0,.4) 38%,#000 62%)}
.phero{overflow:clip}
.sec--tight{padding:clamp(48px,6vw,88px) 0;overflow:clip}
@media (max-width:960px){.draft{-webkit-mask:linear-gradient(180deg,rgba(0,0,0,.35),#000);mask:linear-gradient(180deg,rgba(0,0,0,.35),#000)}.draft.in{opacity:calc(var(--o,.28)*.7)}}

/* ==========================================================================
   СПЛИТ-ЭКРАНЫ УСЛУГ: две панели на экран, фото во всю панель
   ========================================================================== */
.splits{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sp{position:relative;display:block;height:100vh;height:100dvh;overflow:hidden;color:#fff;text-decoration:none;isolation:isolate}
.sp:nth-child(2n){border-left:1px solid rgba(255,255,255,.14)}
.sp:nth-child(n+3){border-top:1px solid rgba(255,255,255,.14)}
.sp__bg{position:absolute;inset:0;z-index:-1;background:#0c0c0d}
.sp__bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.06);filter:brightness(.62) saturate(.92);transition:transform 1.8s var(--ease),filter 1s var(--ease)}
.sp::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(0,0,0,0) 35%,rgba(0,0,0,.72) 100%);pointer-events:none}
.sp__txt{position:absolute;left:clamp(24px,4vw,64px);right:clamp(24px,4vw,64px);bottom:clamp(36px,6vh,80px);display:flex;flex-direction:column;align-items:flex-start;gap:0}
.sp .kicker{color:#fff;margin-bottom:14px;opacity:.85}
.sp__h{font-family:var(--font-d);font-weight:500;font-size:clamp(1.7rem,3.6vw,3.6rem);line-height:1.02;letter-spacing:-.02em;max-width:12ch;text-wrap:balance}
.sp__more{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-family:var(--font-m);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;opacity:0;transform:translateY(8px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.sp__more .ico{width:14px;height:14px}
.sp:hover .sp__bg img,.sp:focus-visible .sp__bg img{transform:scale(1);filter:brightness(.78) saturate(1)}
.sp:hover .sp__more,.sp:focus-visible .sp__more{opacity:.9;transform:none}
/* лёгкое появление текста при входе в экран */
.sp__txt{transform:translateY(24px);opacity:0;transition:transform 1.1s var(--ease),opacity 1.1s var(--ease)}
.sp.in .sp__txt{transform:none;opacity:1}
/* уголки-метки чертежа на панели */
.sp__bg::before,.sp__bg::after{content:"";position:absolute;width:18px;height:18px;border:1px solid rgba(255,255,255,.5);pointer-events:none;z-index:1}
.sp__bg::before{top:22px;left:22px;border-right:0;border-bottom:0}
.sp__bg::after{top:22px;right:22px;border-left:0;border-bottom:0}
@media (max-width:960px){.splits{grid-template-columns:1fr}.sp{height:64vh;min-height:420px}.sp:nth-child(2n){border-left:0}.sp:nth-child(n+2){border-top:1px solid rgba(255,255,255,.14)}.sp__h{font-size:clamp(1.5rem,7vw,2.4rem)}}
@media (prefers-reduced-motion:reduce){.sp__txt,.draft{transition:none;opacity:1;transform:none}}

/* фото не «ловятся» курсором: панель Яндекс.Браузера/Lens не появляется, перетаскивание и выделение выключены (клики уходят на обёртку) */
img,picture,canvas{pointer-events:none;-webkit-user-drag:none;user-drag:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
.hero__fold canvas{pointer-events:auto}