/* ЗизиСтрой v2 — локальная инженерная дизайн-система */
:root {
  --coal-950:#0b1115;--coal-900:#10181e;--coal-850:#162127;--coal-800:#1b282f;
  --steel-700:#34454e;--steel-600:#566872;--steel-500:#73828a;--steel-300:#b9c2c6;
  --stone-100:#e8e8e3;--stone-50:#f3f2ed;--paper:#faf9f5;--white:#fff;
  --copper-600:#a94e28;--copper-500:#c66235;--copper-400:#db7a4d;--signal:#97b7c4;
  --text:#142027;--muted:#5f6b70;--line:rgba(20,32,39,.15);--line-dark:rgba(255,255,255,.14);
  --font-sans:"Segoe UI Variable","Aptos","Inter",Arial,sans-serif;
  --font-mono:"Cascadia Mono","SFMono-Regular",Consolas,monospace;
  --max:1280px;--gutter:clamp(18px,3vw,48px);--section:clamp(76px,9vw,144px);
  --radius:4px;--radius-lg:10px;--shadow:0 22px 70px rgba(11,17,21,.12);
  --ease:cubic-bezier(.2,.7,.2,1)
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--stone-50);color:var(--text);font-family:var(--font-sans);font-size:clamp(16px,.18vw + 15px,18px);line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.32;background-image:linear-gradient(rgba(20,32,39,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(20,32,39,.025) 1px,transparent 1px);background-size:48px 48px}
img,svg{display:block;max-width:100%;height:auto}a{color:inherit;text-underline-offset:3px}button,input,textarea,select{font:inherit}.container{width:min(calc(100% - 2 * var(--gutter)),var(--max));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:16px;z-index:1000;background:var(--paper);color:var(--coal-950);padding:12px 18px;border:2px solid var(--copper-500)}.skip-link:focus{top:16px}
/* Header */
.site-header{position:sticky;top:0;z-index:80;color:#fff;background:rgba(11,17,21,.94);border-bottom:1px solid var(--line-dark);backdrop-filter:blur(18px);transition:background .3s var(--ease),box-shadow .3s var(--ease)}
.site-header.scrolled{background:rgba(11,17,21,.985);box-shadow:0 10px 40px rgba(0,0,0,.18)}
.nav{min-height:82px;display:flex;align-items:center;gap:32px}.logo{display:inline-flex;align-items:center;gap:13px;color:#fff;text-decoration:none;font-size:20px;font-weight:760;letter-spacing:-.035em;white-space:nowrap}.logo::before{content:"Z";width:34px;height:34px;display:grid;place-items:center;color:#fff;background:var(--copper-500);font-family:var(--font-mono);font-size:18px;font-weight:800;clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%)}.logo:has(svg)::before{display:none}.logo svg{width:36px;height:36px;border-radius:0}.menu{margin-left:auto;display:flex;align-items:center;gap:clamp(15px,1.8vw,28px)}.menu a{position:relative;color:#d5dbdd;text-decoration:none;font-size:13px;font-weight:650;letter-spacing:.025em}.menu a:not(.nav-cta)::after{content:"";position:absolute;left:0;right:100%;bottom:-10px;height:1px;background:var(--copper-400);transition:right .3s var(--ease)}.menu a:hover,.menu a[aria-current=page]{color:#fff}.menu a:hover::after,.menu a[aria-current=page]::after{right:0}.nav-cta{margin-left:6px;padding:11px 16px;border:1px solid rgba(255,255,255,.32);transition:.25s var(--ease)}.nav-cta:hover{border-color:var(--copper-400);background:var(--copper-500)}.menu-toggle{display:none;margin-left:auto;padding:10px 12px;color:#fff;background:none;border:1px solid rgba(255,255,255,.35);border-radius:var(--radius);font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
/* Typography */
h1,h2,h3{margin:0 0 .55em;color:inherit;line-height:1.03;letter-spacing:-.045em;text-wrap:balance}h1{max-width:1100px;font-size:clamp(43px,6.7vw,96px);font-weight:640}h2{font-size:clamp(34px,4.7vw,65px);font-weight:620}h3{font-size:clamp(20px,1.65vw,27px);font-weight:650;letter-spacing:-.03em}.lead{max-width:790px;margin:24px 0 0;color:#c3cdd1;font-size:clamp(19px,1.55vw,25px);line-height:1.5;letter-spacing:-.015em}.eyebrow{display:inline-flex;align-items:center;gap:12px;margin-bottom:24px;color:var(--copper-400);font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.15em;text-transform:uppercase}.eyebrow::before{content:"";width:40px;height:1px;background:currentColor}.content{max-width:860px}.content>p,.content>ul{color:#48585f}.content h2{margin-top:1.5em;font-size:clamp(30px,3vw,47px)}.content li{margin-block:.65em}.legal,.form-note{font-size:13px;color:var(--muted)}
/* Hero */
.hero,.service-hero{position:relative;overflow:hidden;color:#fff;background:var(--coal-950)}.hero::before,.service-hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:url('../img/engineering-pattern.svg');background-position:right top;background-size:min(58vw,900px) auto;background-repeat:no-repeat;opacity:.78}.hero::after,.service-hero::after{content:"";position:absolute;right:clamp(16px,4vw,70px);bottom:0;width:1px;height:38%;background:linear-gradient(transparent,var(--copper-500))}.hero{padding:clamp(78px,9vw,142px) 0 58px}.service-hero{padding:clamp(70px,7vw,110px) 0 clamp(65px,7vw,100px);border-bottom:4px solid var(--copper-500)}.hero .container,.service-hero .container{position:relative;z-index:1}.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(340px,.88fr);align-items:center;gap:clamp(42px,6vw,96px)}.hero-art{position:relative;min-height:460px;display:grid;place-items:center}.hero-art::before{content:"ID / 01";position:absolute;top:0;right:0;color:#7f9098;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em}.hero-art img{width:100%;filter:saturate(.72) contrast(1.06);box-shadow:0 30px 90px rgba(0,0,0,.28)}.hero-actions,.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);margin-top:clamp(65px,8vw,110px);border-top:1px solid var(--line-dark)}.metric{position:relative;padding:28px clamp(18px,3vw,42px) 6px 0}.metric:not(:last-child)::after{content:"";position:absolute;top:28px;right:10%;width:1px;height:48px;background:var(--line-dark)}.metric strong{display:block;color:#fff;font-size:clamp(27px,3vw,43px);font-weight:560;letter-spacing:-.04em}.metric span{display:block;max-width:190px;color:#8fa0a8;font-size:12px;line-height:1.45}.breadcrumbs{margin-bottom:34px;color:#8e9da4;font-family:var(--font-mono);font-size:11px;letter-spacing:.05em}.breadcrumbs a{text-decoration:none}.breadcrumbs a:hover{color:#fff}
/* Buttons */
.btn{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 21px;border:1px solid transparent;border-radius:var(--radius);text-decoration:none;font-size:14px;font-weight:720;letter-spacing:.015em;cursor:pointer;transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s}.btn::after{content:"↗";font-family:var(--font-mono);font-size:14px}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{color:#fff;background:var(--copper-500)}.btn-primary:hover{background:var(--copper-600)}.btn-outline{color:#fff;background:transparent;border-color:rgba(255,255,255,.36)}.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.07)}.btn-light{color:var(--coal-950);background:var(--paper)}
/* Sections and grids */
.section{position:relative;padding-block:var(--section)}.section-dark{color:#fff;background:var(--coal-900)}.section-dark::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent 49.95%,rgba(255,255,255,.035) 50%,transparent 50.05%)}.section-head{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);align-items:end;gap:clamp(30px,7vw,100px);margin-bottom:clamp(40px,5vw,72px)}.section-head h2{margin-bottom:0}.section-head>p{margin:0 0 8px;color:var(--muted);font-size:16px}.section-dark .section-head>p{color:#9aa8ae}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line)}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px}.section-dark .grid-2{background:var(--line-dark)}
/* Cards */
.card{position:relative;min-height:310px;padding:clamp(26px,3vw,42px);overflow:hidden;background:var(--paper);border:0;border-radius:0;box-shadow:none;transition:background .35s var(--ease),transform .35s var(--ease),box-shadow .35s var(--ease)}.card::after{content:"";position:absolute;left:0;bottom:0;width:0;height:3px;background:var(--copper-500);transition:width .4s var(--ease)}.card:hover{z-index:2;transform:translateY(-6px);background:#fff;box-shadow:var(--shadow)}.card:hover::after{width:100%}.card p{color:var(--muted);font-size:15px}.card-icon{width:auto;height:auto;display:block;margin:0 0 52px;color:var(--copper-500);background:none;border-radius:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em}.card-icon::after{content:"";display:block;width:36px;height:1px;margin-top:12px;background:var(--copper-500)}.card-link{display:inline-flex;gap:8px;margin-top:12px;color:var(--text);text-decoration:none;font-size:13px;font-weight:750}.card-link:hover{color:var(--copper-600)}
.process{counter-reset:steps}.step{position:relative;min-height:250px;padding:42px 42px 42px 100px;background:var(--coal-900);border:0}.step::before{counter-increment:steps;content:"0" counter(steps);position:absolute;top:43px;left:38px;color:var(--copper-400);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em}.step p{color:#99a7ad;font-size:15px}.case{position:relative;min-height:430px;display:flex;flex-direction:column;justify-content:end;overflow:hidden;padding:36px;color:#fff;background:linear-gradient(180deg,rgba(9,15,18,.08),rgba(9,15,18,.94)),url('../img/project-grid.svg') center/cover;border-radius:0;transition:transform .35s var(--ease),filter .35s}.case::before{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.15);pointer-events:none}.case:hover{z-index:2;transform:translateY(-7px);filter:brightness(1.08)}.case h3{position:relative}.case-tag{position:relative;margin-bottom:18px;color:var(--copper-400);font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.13em;text-transform:uppercase}
/* CTA and layouts */
.band{position:relative;overflow:hidden;padding:clamp(42px,5vw,70px) 0;color:#fff;background:var(--copper-600)}.band::after{content:"";position:absolute;inset:0;background:url('../img/engineering-pattern.svg') right center/700px auto no-repeat;opacity:.16}.band-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:30px}.band h2{max-width:850px;margin:0;font-size:clamp(30px,4vw,58px)}.service-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,390px);align-items:start;gap:clamp(50px,8vw,120px)}.sidebar{position:sticky;top:112px}.checklist{list-style:none;padding:0}.checklist li{position:relative;padding:14px 0 14px 38px;border-bottom:1px solid var(--line)}.checklist li::before{content:"";position:absolute;left:2px;top:23px;width:14px;height:7px;border-left:2px solid var(--copper-500);border-bottom:2px solid var(--copper-500);transform:rotate(-45deg)}.notice{margin:32px 0;padding:22px 24px;background:#eee9df;border-left:3px solid var(--copper-500)}
/* Forms */
.form-card{position:relative;padding:clamp(28px,3.4vw,46px);color:var(--text);background:var(--paper);border-top:3px solid var(--copper-500);border-radius:0;box-shadow:var(--shadow)}.form-card::before{content:"FORM / 01";position:absolute;top:14px;right:18px;color:#96a0a4;font-family:var(--font-mono);font-size:9px;letter-spacing:.1em}.field{margin-bottom:18px}.field label{display:block;margin-bottom:7px;color:#34444b;font-size:12px;font-weight:720;letter-spacing:.04em}.field input,.field textarea,.field select{width:100%;padding:13px 14px;color:var(--text);background:#fff;border:1px solid #c8cdcd;border-radius:var(--radius);transition:border-color .2s,box-shadow .2s}.field textarea{min-height:120px;resize:vertical}.field input:hover,.field textarea:hover,.field select:hover{border-color:#8c999e}.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--signal);box-shadow:0 0 0 3px rgba(151,183,196,.25)}.field [aria-invalid=true]{border-color:#a73e33}.hp{position:absolute!important;left:-9999px!important}.status{min-height:24px;color:#963b31;font-size:13px}.contact-grid{display:grid;grid-template-columns:minmax(290px,.8fr) minmax(360px,1.2fr);gap:clamp(32px,6vw,84px)}.contact-list{list-style:none;padding:0}.contact-list li{padding:18px 0;border-bottom:1px solid var(--line)}.map{width:100%;min-height:440px;border:0;border-radius:0;background:#d8dcda;filter:grayscale(.85) contrast(.95)}
/* FAQ */
.faq-item{border-bottom:1px solid var(--line)}.faq-btn{width:100%;display:flex;justify-content:space-between;gap:28px;padding:28px 0;color:inherit;background:none;border:0;text-align:left;font-size:clamp(18px,1.5vw,23px);font-weight:650;cursor:pointer}.faq-btn span:last-child{color:var(--copper-500);font-family:var(--font-mono);font-size:24px}.faq-panel{display:grid;grid-template-rows:0fr;padding-right:10%;color:var(--muted);transition:grid-template-rows .35s var(--ease),padding-bottom .35s var(--ease)}.faq-panel>*{overflow:hidden;margin:0}.faq-btn[aria-expanded=true]+.faq-panel{grid-template-rows:1fr;padding-bottom:28px}
/* Floating contacts and footer */
.social-float{position:fixed;right:18px;bottom:18px;z-index:45;display:flex;flex-direction:column;gap:8px}.social-float a{width:46px;height:46px;display:grid;place-items:center;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:2px;box-shadow:0 9px 24px rgba(0,0,0,.18);transition:transform .2s var(--ease),filter .2s}.social-float a:hover{transform:translateX(-4px);filter:brightness(1.08)}.social-float svg{width:21px}.tg{background:#287da1}.wa{background:#367d55}.site-footer{position:relative;padding:80px 0 28px;color:#aab5ba;background:var(--coal-950);border-top:1px solid var(--line-dark)}.site-footer::before{content:"";position:absolute;top:0;right:8%;width:25%;height:1px;background:var(--copper-500)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(32px,6vw,90px)}.footer-title{color:#fff;font-size:13px;font-weight:760;letter-spacing:.08em;text-transform:uppercase}.footer-links{list-style:none;padding:0}.footer-links li{margin:9px 0}.footer-links a,.site-footer a{text-decoration:none}.site-footer a:hover{color:#fff}.footer-bottom{margin-top:60px;padding-top:22px;border-top:1px solid var(--line-dark);font-family:var(--font-mono);font-size:11px}.reveal{opacity:0;transform:translateY(25px);transition:opacity .7s var(--ease),transform .7s var(--ease)}.reveal.visible{opacity:1;transform:none}.reveal:nth-child(2){transition-delay:.08s}.reveal:nth-child(3){transition-delay:.16s}
@media(max-width:1020px){.menu-toggle{display:block}.menu{position:fixed;inset:82px 0 auto;display:grid;gap:0;padding:12px var(--gutter) 24px;background:var(--coal-950);border-top:1px solid var(--line-dark);transform:translateY(-130%);visibility:hidden;opacity:0;transition:transform .35s var(--ease),opacity .25s,visibility .35s}.menu.open{transform:none;visibility:visible;opacity:1}.menu a{padding:15px 0;border-bottom:1px solid var(--line-dark);font-size:15px}.menu a::after{display:none}.nav-cta{margin:14px 0 0!important;padding:14px!important;text-align:center}.hero-grid{grid-template-columns:1fr .72fr}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.service-layout{grid-template-columns:minmax(0,1fr) 330px;gap:50px}.footer-grid{grid-template-columns:1.2fr 1fr 1fr}}
@media(max-width:760px){:root{--section:68px}.nav{min-height:72px}.menu{inset-block-start:72px}.hero{padding-top:70px}.hero-grid,.section-head,.service-layout,.contact-grid{grid-template-columns:1fr}.hero-art{min-height:auto}.hero-art img{max-height:300px;object-fit:cover}.metrics{margin-top:58px}.grid-3,.grid-2{grid-template-columns:1fr}.card{min-height:250px}.card-icon{margin-bottom:34px}.step{min-height:210px}.sidebar{position:static}.section-head{align-items:start}.section-head>p{max-width:620px}.footer-grid{grid-template-columns:1fr 1fr}.band-inner{align-items:flex-start;flex-direction:column}.map{min-height:360px}}
@media(max-width:480px){:root{--gutter:16px;--section:58px}.logo{font-size:18px}.logo::before{width:31px;height:31px}.hero-art{display:none}h1{font-size:clamp(39px,13vw,58px)}.metrics{grid-template-columns:1fr}.metric{padding:18px 0;border-bottom:1px solid var(--line-dark)}.metric:not(:last-child)::after{display:none}.metric span{max-width:none}.hero-actions,.actions{align-items:stretch;flex-direction:column}.btn{width:100%}.footer-grid{grid-template-columns:1fr}.case{min-height:350px;padding:26px}.social-float{right:10px;bottom:10px}.social-float a{width:42px;height:42px}.form-card{padding:25px 20px}.faq-panel{padding-right:0}}
@media(min-width:1800px){:root{--max:1500px}.hero-grid{grid-template-columns:1.1fr .9fr}.card{min-height:340px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}

/* Art direction pass 1: cinematic first screen */
@media(min-width:1021px){
  .nav{min-height:88px}.logo{gap:14px;font-size:19px;font-weight:680}.logo::before{width:38px;height:38px;background:transparent;border:1px solid var(--copper-400);font-size:17px}.logo svg{width:38px;height:38px;filter:saturate(.72)}
  .hero{min-height:calc(100svh - 88px);padding:clamp(82px,8vw,128px) 0 50px;display:flex;align-items:stretch}.hero>.container{display:flex;flex-direction:column;justify-content:space-between}
  .hero-grid{grid-template-columns:minmax(0,1.06fr) minmax(390px,.94fr);gap:clamp(52px,7vw,112px)}.hero-grid>div:first-child{position:relative}.hero-grid>div:first-child::after{content:"01 / EXECUTIVE DOCUMENTATION";position:absolute;left:0;top:calc(100% + 54px);color:#64757c;font-family:var(--font-mono);font-size:9px;letter-spacing:.15em}
  .hero h1{font-size:clamp(58px,5.65vw,82px);font-weight:590}.hero-art{min-height:480px}.hero-art img{width:112%;max-width:none;filter:saturate(.62) contrast(1.05);box-shadow:none;clip-path:polygon(7% 0,100% 0,100% 91%,91% 100%,0 100%,0 8%)}
  .metrics{margin-top:clamp(76px,7vw,104px)}
}
.btn{border-radius:0;gap:14px}.btn-primary{background:#b55a38}.nav-cta{border-radius:0}

/* Art direction pass 2: indexed modules and material surfaces */
.grid-3{counter-reset:module;container-type:inline-size}.grid-3>.card{counter-increment:module;padding-top:82px;background:linear-gradient(145deg,#fbfaf6 0%,#f4f3ee 100%)}.grid-3>.card::before{content:"M—" counter(module,decimal-leading-zero);position:absolute;top:31px;left:clamp(26px,3vw,42px);color:#889399;font-family:var(--font-mono);font-size:9px;letter-spacing:.14em}.grid-3>.card::after{height:2px}.grid-3>.card:hover{background:linear-gradient(145deg,#fff 0%,#f7f4ec 100%)}.grid-3>.card:hover::before{color:var(--copper-600)}
.card h3{max-width:290px}.card-link{position:absolute;left:clamp(26px,3vw,42px);bottom:30px}.card-link::before{content:"";width:18px;height:1px;margin:auto 0;background:var(--copper-500);transition:width .25s var(--ease)}.card:hover .card-link::before{width:32px}
.form-card{isolation:isolate;background:linear-gradient(155deg,rgba(255,255,255,.98),rgba(244,242,235,.98));box-shadow:0 1px 0 rgba(255,255,255,.9) inset,0 28px 70px rgba(11,17,21,.14),0 4px 18px rgba(11,17,21,.06)}.form-card::after{content:"";position:absolute;z-index:-1;right:0;top:0;width:110px;height:110px;background:linear-gradient(135deg,transparent 49.5%,rgba(184,91,56,.16) 50%,transparent 51%)}.form-card h2,.form-card h3{max-width:80%}.field input,.field textarea,.field select{background:rgba(255,255,255,.7);border-color:#bdc5c7}.field input:focus,.field textarea:focus,.field select:focus{background:#fff}
.contact-list{counter-reset:contact}.contact-list li{counter-increment:contact;position:relative;padding-left:42px}.contact-list li::before{content:"0" counter(contact);position:absolute;left:0;top:22px;color:var(--copper-500);font-family:var(--font-mono);font-size:9px;letter-spacing:.08em}
.service-layout>.content{position:relative}.service-layout>.content::before{content:"TECHNICAL SCOPE";display:block;margin-bottom:28px;color:#8b969a;font-family:var(--font-mono);font-size:9px;letter-spacing:.16em}.sidebar.form-card{border-top-color:var(--coal-800)}
.site-footer{overflow:hidden}.site-footer::after{content:"ЗС";position:absolute;right:-.04em;bottom:-.38em;color:rgba(255,255,255,.025);font-size:clamp(180px,28vw,430px);font-weight:760;line-height:1;letter-spacing:-.12em;pointer-events:none}.site-footer>.container{position:relative;z-index:1}
@container (max-width:800px){.grid-3>.card{padding-top:68px}.grid-3>.card::before{top:25px}}
@supports (animation-timeline:view()){
  .section-head{animation:section-enter linear both;animation-timeline:view();animation-range:entry 0% cover 32%}@keyframes section-enter{from{opacity:.3;transform:translateY(35px)}to{opacity:1;transform:none}}
  .hero-art img{animation:hero-drift linear both;animation-timeline:scroll(root);animation-range:0 700px}@keyframes hero-drift{to{transform:translateY(30px) scale(.98);opacity:.82}}
}

/* Art direction pass 3: responsive composition and interaction polish */
:focus-visible{outline:2px solid var(--copper-400);outline-offset:4px}
::selection{color:#fff;background:var(--copper-600)}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}.hero-art{display:none}.hero{min-height:auto;padding-bottom:48px}.hero h1{max-width:720px}.hero .lead{max-width:660px}.metrics{margin-top:62px}
  .hero-actions{max-width:580px}.service-hero{min-height:560px;display:flex;align-items:center}.service-hero .lead{max-width:700px}
}
@media(max-width:640px){
  .hero-actions,.actions{display:grid;grid-template-columns:1fr}.hero-actions .btn,.actions .btn{width:100%}.hero .lead{font-size:18px}.service-hero{min-height:500px}
  .metrics{grid-template-columns:1fr}.metric{padding:18px 0;border-bottom:1px solid var(--line-dark)}.metric:not(:last-child)::after{display:none}.metric span{max-width:none}
  .menu-toggle{position:relative;width:44px;height:40px;padding:0;border-color:rgba(255,255,255,.22);font-size:0}.menu-toggle::before,.menu-toggle::after{content:"";position:absolute;left:11px;width:20px;height:1px;background:#fff;transition:transform .25s var(--ease),top .25s var(--ease)}.menu-toggle::before{top:15px}.menu-toggle::after{top:23px}.menu-toggle[aria-expanded=true]::before{top:19px;transform:rotate(45deg)}.menu-toggle[aria-expanded=true]::after{top:19px;transform:rotate(-45deg)}
  .grid-3>.card{min-height:280px;padding-bottom:76px}.card-link{bottom:27px}.band-inner .btn{width:100%}
  .social-float{display:none}.footer-bottom{padding-right:0}.map{min-height:300px}
}
@media(max-width:380px){.logo{font-size:17px}.menu-toggle{padding:9px;font-size:11px}.hero h1{font-size:37px}.eyebrow{font-size:9px;letter-spacing:.1em}.card{padding-inline:22px}.grid-3>.card::before,.card-link{left:22px}}

/* Production art direction — Evidence / Control contour */
@font-face{font-family:ManropeZS;src:url('../fonts/Manrope-Variable.ttf') format('truetype');font-style:normal;font-weight:200 800;font-display:swap}
:root{--font-sans:ManropeZS,"Segoe UI Variable","Segoe UI",Arial,sans-serif;--coal-950:#091015;--coal-900:#10191f;--paper:#f8f7f2;--stone-50:#f0efe9;--copper-500:#b65a38;--copper-400:#cf7752;--signal:#789ead}
body{background:var(--stone-50);font-variation-settings:"wght" 430}
.site-header{background:color-mix(in srgb,var(--coal-950) 88%,transparent);border-bottom-color:rgba(255,255,255,.11)}
.site-header.scrolled{background:color-mix(in srgb,var(--coal-950) 96%,transparent)}
.nav{max-width:1500px}.logo{font-variation-settings:"wght" 680}.menu a{font-variation-settings:"wght" 610}
.hero{isolation:isolate;background:radial-gradient(circle at 72% 42%,#1c2a31 0,transparent 34%),var(--coal-950)}
.hero::before{opacity:.44;background-size:min(55vw,950px) auto}
.hero-art{isolation:isolate;overflow:hidden;background:linear-gradient(150deg,rgba(9,16,21,.05),rgba(9,16,21,.5)),url('../img/construction-concrete.jpg') 55% center/cover;border:1px solid rgba(255,255,255,.14);box-shadow:0 50px 100px rgba(0,0,0,.28);clip-path:polygon(7% 0,100% 0,100% 92%,92% 100%,0 100%,0 7%)}
.hero-art::after{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,rgba(9,16,21,.5),transparent 45%),url('../img/control-contour.svg') center/94% auto no-repeat;mix-blend-mode:screen;opacity:.68;pointer-events:none}
.hero-art img{position:absolute;z-index:2;right:-4%;bottom:-5%;width:57%;max-width:430px;padding:14px;background:rgba(9,16,21,.74);border:1px solid rgba(255,255,255,.16);box-shadow:0 28px 60px rgba(0,0,0,.28);clip-path:none;backdrop-filter:blur(16px);opacity:.92}
.hero-art::before{z-index:3;top:18px;right:20px;color:rgba(255,255,255,.72)}
.metrics{position:relative}.metrics::before{content:"CONTROL STATUS / VERIFIED";position:absolute;right:0;top:-27px;color:#65767e;font-family:var(--font-mono);font-size:9px;letter-spacing:.14em}
.service-hero{min-height:clamp(520px,61vh,700px);display:flex;align-items:center;background-image:linear-gradient(90deg,rgba(9,16,21,.99) 0%,rgba(9,16,21,.94) 49%,rgba(9,16,21,.54) 73%,rgba(9,16,21,.72) 100%),url('../img/construction-concrete.jpg');background-position:center;background-size:cover}
.service-hero::before{opacity:.55;background-image:url('../img/control-contour.svg');background-position:92% center;background-size:min(46vw,700px) auto}
.service-hero::after{height:62%}
.service-hero h1{max-width:1000px;text-shadow:0 2px 30px rgba(0,0,0,.3)}
.section{background-color:transparent}.section-dark{background:linear-gradient(145deg,#10191f,#0b1217)}
.section-dark::after{content:"";position:absolute;inset:0;pointer-events:none;background:url('../img/control-contour.svg') 108% 50%/650px auto no-repeat;opacity:.055}
.grid-3{gap:1px;background:rgba(20,32,39,.13);box-shadow:0 1px 0 rgba(255,255,255,.7)}
.grid-3>.card{background:linear-gradient(150deg,rgba(255,255,255,.92),rgba(244,243,237,.96));border:0;backdrop-filter:blur(12px)}
.grid-3>.card:hover{transform:translateY(-7px);box-shadow:0 35px 80px rgba(9,16,21,.15),0 1px 0 #fff inset}
.case{min-height:480px;background-image:linear-gradient(180deg,rgba(9,16,21,.05),rgba(9,16,21,.93)),url('../img/construction-concrete.jpg');filter:saturate(.72) contrast(1.05)}
.case:nth-child(2){background-image:linear-gradient(180deg,rgba(9,16,21,.04),rgba(9,16,21,.94)),url('../img/construction-rebar.jpg');background-position:center 44%}
.case:nth-child(3){background-image:linear-gradient(180deg,rgba(9,16,21,.08),rgba(9,16,21,.94)),url('../img/construction-concrete.jpg');background-position:76% center}
.case:hover{filter:saturate(.88) contrast(1.05);transform:translateY(-7px)}
.form-card{background:linear-gradient(155deg,rgba(255,255,255,.96),rgba(242,241,234,.98));border:1px solid rgba(20,32,39,.12);border-top:2px solid var(--copper-500);box-shadow:0 34px 90px rgba(9,16,21,.16),0 1px 0 rgba(255,255,255,.9) inset;backdrop-filter:blur(16px)}
.btn{position:relative;overflow:hidden;font-variation-settings:"wght" 670}.btn::before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.18),transparent 70%);transform:translateX(-110%);transition:transform .6s var(--ease)}.btn:hover::before{transform:translateX(110%)}
.site-footer{background:radial-gradient(circle at 80% 110%,#1c2a31,transparent 34%),var(--coal-950)}
.map{box-shadow:0 24px 60px rgba(9,16,21,.12)}
@media(max-width:900px){.service-hero{min-height:520px;background-position:65% center}.service-hero::before{background-size:740px auto;background-position:70% center}.hero-art{display:none}}
@media(max-width:640px){.service-hero{min-height:490px;background-image:linear-gradient(90deg,rgba(9,16,21,.97),rgba(9,16,21,.76)),url('../img/construction-concrete.jpg')}.metrics::before{display:none}.case{min-height:390px}}