:root{
  --bg:#fff;--alt:#f2f5f1;--ink:#171a17;--muted:#5d655d;--line:#dfe5dd;
  --brand:#4f8a3b;--brand-d:#3b6b2b;--brand-l:#8fb87a;--gray:#555;
  --dark:#141914;--dark2:#1d241d;
  --font:Inter,system-ui,Segoe UI,Arial,sans-serif;--display:Oswald,Impact,'Arial Narrow',sans-serif;
  --r:16px;--shadow:0 14px 40px rgba(20,25,20,.1)
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%}
.container{width:min(1160px,100% - 32px);margin:0 auto}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header__in{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{display:block;height:36px;width:auto}
.brand span{font-family:var(--display);font-size:27px;font-weight:700;letter-spacing:.02em;text-transform:uppercase;line-height:1}
.brand b{color:var(--brand);font-weight:700}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{font-size:15px;font-weight:500;color:var(--muted);position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--brand);transition:width .25s}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}
.header__tel{font-weight:700;font-size:15px;white-space:nowrap}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.burger span{width:24px;height:2px;background:var(--ink);transition:.2s}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:15px 30px;border-radius:10px;background:var(--brand);color:#fff;font-weight:600;border:0;cursor:pointer;font:600 16px var(--font);transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(79,138,59,.4);background:var(--brand-d)}
.btn--sm{padding:10px 20px;font-size:14px}
.btn--ghost{background:transparent;border:2px solid rgba(255,255,255,.35);padding:13px 28px}
.btn--ghost:hover{background:rgba(255,255,255,.08);box-shadow:none;border-color:#fff}
.btn--white{background:#fff;color:var(--brand-d)}
.btn--white:hover{background:var(--dark);color:#fff;box-shadow:none}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;padding:96px 0 0}
.hero__bg{position:absolute;inset:0;background:
  radial-gradient(900px 500px at 85% 30%,rgba(79,138,59,.35),transparent 60%),
  repeating-linear-gradient(115deg,rgba(255,255,255,.025) 0 2px,transparent 2px 46px)}
.hero__bg::after{content:"";position:absolute;right:-8%;top:-10%;width:60%;height:130%;
  background:linear-gradient(160deg,rgba(79,138,59,.18),transparent 70%);clip-path:polygon(30% 0,100% 0,100% 100%,0 100%,25% 50%)}
.hero__in{position:relative;display:grid;grid-template-columns:1.25fr .9fr;gap:40px;align-items:center;padding-bottom:70px}
.eyebrow{display:flex;align-items:center;gap:12px;color:var(--brand-l);font-weight:600;text-transform:uppercase;letter-spacing:.14em;font-size:13px;margin-bottom:20px}
.eyebrow i{width:36px;height:3px;background:var(--brand)}
.hero h1{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:clamp(36px,5.6vw,68px);line-height:1.06;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--brand-l)}
.hero__sub{max-width:560px;margin:24px 0 36px;font-size:18px;color:#c4ccc4}
.hero__btns{display:flex;gap:14px;flex-wrap:wrap}
.hero__logo{justify-self:center;max-width:420px;animation:float 6s ease-in-out infinite}
.hero__logo img{display:block;width:100%;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.5))}
@keyframes float{50%{transform:translateY(-12px)}}

.strip{position:relative;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;color:var(--ink);border-radius:var(--r) var(--r) 0 0;box-shadow:0 -10px 40px rgba(0,0,0,.2)}
.strip div{padding:26px 24px;border-right:1px solid var(--line)}
.strip div:last-child{border:0}
.strip b{display:block;font-family:var(--display);font-size:34px;color:var(--brand);line-height:1.1}
.strip span{font-size:14px;color:var(--muted)}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section--alt{background:var(--alt)}
.section--dark{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.section--dark::before{content:"";position:absolute;left:-10%;bottom:-40%;width:50%;height:100%;background:radial-gradient(closest-side,rgba(79,138,59,.25),transparent)}
.head{max-width:680px;margin-bottom:48px}
.head p{color:var(--muted);margin-top:12px;font-size:17px}
.head--light h2{color:#fff}
.tag{display:inline-block;color:var(--brand);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:13px;margin-bottom:12px;padding-left:34px;position:relative}
.tag::before{content:"";position:absolute;left:0;top:50%;width:24px;height:3px;background:var(--brand)}
h2{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:clamp(28px,3.8vw,44px);line-height:1.12;letter-spacing:.01em}

/* ---------- Product cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:26px}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 26px;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--brand-l)}
.card__num{position:absolute;top:34px;right:36px;font-family:var(--display);font-size:26px;color:rgba(255,255,255,.55)}
.card h3{font-family:var(--display);font-size:24px;text-transform:uppercase;letter-spacing:.02em;margin:20px 0 10px}
.card ul{margin-bottom:14px}
.card li{padding-left:20px;position:relative;font-size:15px;color:var(--muted);margin-bottom:2px}
.card li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:var(--brand);clip-path:polygon(0 0,100% 50%,0 100%)}
.card p{font-size:15px;margin-bottom:16px}
.more{font-weight:700;color:var(--brand-d);display:inline-flex;gap:8px}
.more span{transition:transform .2s}
.card:hover .more span{transform:translateX(6px)}

.visual{height:190px;border-radius:12px;display:grid;place-items:center;overflow:hidden;position:relative;
  background:linear-gradient(135deg,var(--dark),var(--dark2))}
.visual::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,rgba(255,255,255,.04) 0 2px,transparent 2px 30px)}
.visual::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--brand)}
/* panel kesimi: po'lat / izolyatsiya / po'lat */
.visual--panel{align-content:center;gap:0;padding:0 38px}
.visual--panel .layer{width:200px;position:relative;transform:skewX(-18deg)}
.steel{height:14px;background:linear-gradient(#e9eee8,#aab3a9)}
.foam{height:56px;background:repeating-linear-gradient(90deg,var(--brand) 0 12px,#5c9a47 12px 24px)}
.visual--panel .layer+.layer{margin-top:0}
/* eshik */
.door{position:relative;width:104px;height:150px;background:linear-gradient(#e9eee8,#b9c2b8);border-radius:4px 4px 0 0;padding:9px;box-shadow:0 0 0 5px #3a443a}
.door span{display:block;width:100%;height:100%;background:linear-gradient(135deg,var(--brand),var(--brand-d));border-radius:2px}
.door i{position:absolute;right:15px;top:68px;width:6px;height:26px;border-radius:3px;background:#fff}
/* agregat */
.unit{display:flex;gap:16px;padding:18px 22px;background:linear-gradient(#e9eee8,#b9c2b8);border-radius:8px;box-shadow:0 0 0 5px #3a443a}
.fan{width:62px;height:62px;border-radius:50%;background:radial-gradient(circle,var(--dark) 0 7px,transparent 8px),conic-gradient(var(--brand) 0 25%,#fff 0 50%,var(--brand) 0 75%,#fff 0);border:4px solid #3a443a;animation:spin 3s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Advantages ---------- */
.adv{position:relative;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.adv div{padding:30px 26px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);transition:.25s}
.adv div:hover{background:rgba(79,138,59,.18);border-color:var(--brand)}
.adv em{font-style:normal;font-family:var(--display);font-size:42px;color:var(--brand-l);line-height:1}
.adv h3{font-family:var(--display);text-transform:uppercase;font-size:20px;margin:14px 0 8px;letter-spacing:.02em}
.adv p{color:#b7c1b7;font-size:15px}

/* ---------- Process ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.steps li{position:relative;padding-top:24px}
.steps li::before{content:"";position:absolute;top:21px;left:46px;right:-18px;height:2px;background:repeating-linear-gradient(90deg,var(--brand-l) 0 6px,transparent 6px 12px)}
.steps li:last-child::before{display:none}
.steps b{position:relative;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;font-family:var(--display);font-size:20px;margin:-24px 0 16px;box-shadow:0 0 0 6px rgba(79,138,59,.18)}
.steps h3{font-family:var(--display);text-transform:uppercase;font-size:19px;letter-spacing:.02em;margin-bottom:6px}
.steps p{font-size:14px;color:var(--muted)}

/* ---------- About ---------- */
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:center}
.about__logo{background:#fff;border-radius:24px;padding:36px;box-shadow:var(--shadow);border-bottom:6px solid var(--brand)}
.about__logo img{display:block;width:100%;height:auto}
.about p{color:var(--muted);margin-top:16px}
.about h2{margin-top:2px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.stats div{background:#fff;border-radius:12px;padding:18px 16px;border:1px solid var(--line);border-top:3px solid var(--brand)}
.stats b{display:block;font-family:var(--display);font-size:36px;line-height:1.1}
.stats b[data-plus]::after{content:"+";color:var(--brand)}
.stats span{color:var(--muted);font-size:13px}

/* ---------- Projects ---------- */
.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.project{background:var(--alt);border-radius:var(--r);padding:26px 24px;border-left:4px solid var(--brand);transition:.25s}
.project:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#fff}
.project i{font-style:normal;font-size:30px;display:block;margin-bottom:10px}
.project b{display:block;font-size:18px;margin-bottom:6px}
.project span{color:var(--muted);font-size:14px}
.partners__t{font-family:var(--display);text-transform:uppercase;font-size:20px;margin:56px 0 16px;letter-spacing:.04em}



/* ---------- CTA ---------- */
.cta{background:linear-gradient(110deg,var(--brand-d),var(--brand));color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:8%;top:-40%;width:300px;height:180%;background:rgba(255,255,255,.07);transform:skewX(-20deg)}
.cta::after{content:"";position:absolute;right:22%;top:-40%;width:90px;height:180%;background:rgba(255,255,255,.07);transform:skewX(-20deg)}
.cta__in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:56px 0;flex-wrap:wrap;z-index:1}
.cta h2{font-size:clamp(24px,3vw,36px)}
.cta p{margin-top:8px;opacity:.9}

/* ---------- Contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.contact p{color:var(--muted);margin:14px 0 26px}
.contacts li{display:flex;flex-direction:column;padding:14px 0;border-bottom:1px solid var(--line)}
.contacts li span{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.contacts a{font-weight:600;font-size:18px}
.contacts a:hover{color:var(--brand)}
.form{display:grid;gap:14px;background:var(--alt);padding:30px;border-radius:20px;border-top:5px solid var(--brand)}
.form input,.form select,.form textarea{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--brand);border-color:transparent}
.check{display:flex;gap:10px;font-size:14px;color:var(--muted);align-items:flex-start}
.check input{width:auto;margin-top:5px}
.form__ok{color:#1a7f37;font-weight:600}

/* ---------- Footer ---------- */
.footer{background:var(--dark);color:#c4ccc4;padding:48px 0 22px;border-top:6px solid var(--brand)}
.footer__in{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.footer__logo img{display:block;width:120px;height:auto}
.footer nav{display:flex;gap:26px;flex-wrap:wrap}
.footer nav a:hover,.footer__c a:hover{color:var(--brand-l)}
.footer__c{display:flex;flex-direction:column;gap:4px;text-align:right}
.footer__c a{font-weight:700;color:#fff}
.copy{text-align:center;margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7f8a7f}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero__logo,.fan{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .header__tel{display:none}
  .steps{grid-template-columns:1fr 1fr}
  .steps li::before{display:none}
  .about{grid-template-columns:1fr;gap:36px}
  .about__logo{max-width:320px}
  .stats{grid-template-columns:1fr 1fr}
}
@media(max-width:820px){
  .burger{display:flex}
  .header .btn--sm{display:none}
  .nav{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);margin:0;box-shadow:0 14px 24px rgba(0,0,0,.08)}
  .nav.open{display:flex}
  .nav a{padding:15px 20px;border-top:1px solid var(--line)}
  .nav a::after{display:none}
  .hero{padding-top:56px}
  .hero__in{grid-template-columns:1fr;padding-bottom:44px}
  .hero__logo{max-width:230px;order:-1;justify-self:start}
  .strip{grid-template-columns:1fr 1fr}
  .strip div{border-bottom:1px solid var(--line)}
  .section{padding:64px 0}
  .contact{grid-template-columns:1fr;gap:34px}
  .footer__in{flex-direction:column;align-items:flex-start}
  .footer__c{text-align:left}
}
@media(max-width:520px){
  .steps{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .strip div{padding:18px 16px}
  .strip b{font-size:26px}
}