/* ============================================================
   Тектоника — лендинг. Направление A «Инженерная классика».
   Тёмная тема, золото из логотипа. Шрифт self-host (Onest).
   ============================================================ */

/* ---------- Self-host шрифт Onest (cyrillic + latin) ---------- */
@font-face{font-family:'Onest';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/onest-cyrillic-400.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/onest-latin-400.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Onest';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/onest-cyrillic-500.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/onest-latin-500.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Onest';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/onest-cyrillic-600.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/onest-latin-600.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Onest';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/onest-cyrillic-700.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/onest-latin-700.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}
@font-face{font-family:'Onest';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/onest-cyrillic-800.woff2') format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Onest';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/onest-latin-800.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2122,U+2212}

/* ---------- Токены ---------- */
:root{
  --bg:#0E1219; --card:#12161F; --card2:#161b26;
  --gold:#FAAA1E; --gold2:#FADC3C; --gold-deep:#B87A12;
  --white:#FFFFFF; --sec:#CFD5DE; --mut:#D3D9E2;
  --line:rgba(255,255,255,.10); --line2:rgba(255,255,255,.16);
  --grad:linear-gradient(180deg,#B87A12 0%,#FAAA1E 55%,#FADC3C 100%);
  --radius:12px; --radius-sm:9px;
  --container:1200px;
  --font:'Onest',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--white);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.1;font-weight:800;letter-spacing:-.01em}
p{margin:0}
.container{max-width:var(--container);margin:0 auto;padding:0 40px}
.eyebrow{color:var(--gold);font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:14px}
.section{padding:88px 0}
.section-h{font-size:40px;margin:0 0 14px}
.section-sub{color:var(--sec);max-width:720px;margin:0 0 48px;font-size:17px}
.gold{color:var(--gold)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

/* ---------- Кнопки (дофаминовые) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;border:0;
  font-family:inherit;font-weight:700;font-size:16px;border-radius:var(--radius);padding:16px 30px;text-align:center;text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .18s,filter .15s,border-color .15s,color .15s}
.btn-primary{background:var(--grad);color:#1a1205;box-shadow:0 10px 30px rgba(250,170,30,.26)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 40px rgba(250,170,30,.4)}
.btn-ghost{background:transparent;color:var(--white);border:1px solid var(--line2)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn-link{background:transparent;color:var(--white);padding:16px 6px;text-decoration:underline;text-underline-offset:5px}
.btn-link:hover{color:var(--gold)}
.btn:active{transform:scale(.96)}
.btn[disabled]{opacity:.65;cursor:not-allowed;filter:none;box-shadow:none}
.btn-wide{width:100%}

/* ---------- Шапка ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(14,18,25,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:78px;padding-top:0;padding-bottom:0}
.header .logo img{height:42px;width:auto}
.nav{display:flex;gap:30px}
.nav a{color:var(--sec);text-decoration:none;font-size:15px;transition:color .15s}
.nav a:hover{color:var(--white)}
.header-phone{display:flex;align-items:center;gap:18px}
.phone-link{color:var(--white);font-weight:700;text-decoration:none;font-size:18px;white-space:nowrap}
.phone-link:hover{color:var(--gold)}
.burger{display:none;background:none;border:0;cursor:pointer;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;padding:10px}
.burger span{height:2px;background:#fff;border-radius:2px;transition:.2s}
.mobile-menu{position:fixed;inset:0 0 0 auto;width:min(82vw,340px);background:var(--card);z-index:60;transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:88px 28px 28px;gap:4px;border-left:1px solid var(--line);box-shadow:-20px 0 60px rgba(0,0,0,.5)}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{color:var(--white);text-decoration:none;font-size:19px;padding:14px 0;border-bottom:1px solid var(--line)}
.mobile-menu .btn{margin-top:20px}
.menu-overlay{position:fixed;inset:0;background:rgba(5,7,11,.6);z-index:55;opacity:0;visibility:hidden;transition:.25s}
.menu-overlay.open{opacity:1;visibility:visible}
.m-close{position:absolute;top:22px;right:22px;background:none;border:0;color:#fff;font-size:30px;line-height:1;cursor:pointer;width:44px;height:44px}

/* ---------- Первый экран ---------- */
.hero{position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url('img/Школа-Очаково_1_общий.jpg') center/cover;z-index:0}
.hero-grad{position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(14,18,25,.97) 30%,rgba(14,18,25,.72) 55%,rgba(14,18,25,.3) 100%)}
.hero .container{position:relative;z-index:2;padding-top:72px;padding-bottom:72px}
.hero-inner{max-width:840px}
.hero h1{font-size:clamp(34px,5.4vw,58px);line-height:1.04;margin:0 0 22px}
.hero .sub{color:var(--sec);font-size:clamp(17px,2.2vw,20px);line-height:1.5;max-width:580px;margin:0 0 34px}
.hero-btns{display:flex;gap:16px;align-items:center;flex-wrap:wrap}

/* ---------- Полоса цифр ---------- */
.stats{background:#0b0f16;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);padding-top:0;padding-bottom:0}
.stat{padding:30px 32px;border-right:1px solid var(--line)}
.stat:first-child{padding-left:0}
.stat:last-child{border-right:0}
.stat .n{font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--gold);line-height:1}
.stat .l{font-size:13px;letter-spacing:.09em;text-transform:uppercase;color:var(--mut);margin-top:8px}

/* ---------- О компании ---------- */
.about .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.about p{color:var(--sec);font-size:17px;margin-bottom:16px;max-width:640px}
.about .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.about .card h3{font-size:19px;margin-bottom:16px}
.about .card ul{list-style:none;margin:0;padding:0}
.about .card li{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);color:var(--sec);font-size:15px}
.about .card li:first-child{border-top:0;padding-top:0}
.about .card li svg{flex:none;stroke:var(--gold);margin-top:2px}

/* ---------- Услуги ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:border-color .18s,transform .18s var(--ease)}
.svc:hover{border-color:var(--line2);transform:translateY(-3px)}
.svc .ic{width:46px;height:46px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:rgba(250,170,30,.06)}
.svc .ic svg{stroke:var(--gold)}
.svc h3{font-size:18px;margin-bottom:9px;line-height:1.2}
.svc p{color:var(--sec);font-size:14px;line-height:1.5}

/* ---------- Проекты ---------- */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.tab{cursor:pointer;font-family:inherit;font-size:14px;color:var(--sec);background:transparent;border:1px solid var(--line);border-radius:999px;padding:11px 20px;transition:.15s}
.tab:hover{border-color:var(--line2);color:var(--white)}
.tab.active{background:var(--gold);color:#1a1205;border-color:var(--gold);font-weight:700}
.proj-group{display:none}
.proj-group.active{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.proj-lead{color:var(--sec);font-size:16px;max-width:760px;margin:-8px 0 28px}
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:border-color .18s,transform .18s var(--ease)}
.pcard:hover{border-color:var(--line2);transform:translateY(-3px)}
.pcard .gallery{position:relative;aspect-ratio:16/10;background:#0b0f16;overflow:hidden}
.pcard .gallery img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .4s}
.pcard .gallery img.show{opacity:1}
.pcard .gdots{position:absolute;left:14px;bottom:12px;display:flex;gap:6px;z-index:2}
.pcard .gdots button{width:8px;height:8px;border-radius:50%;border:0;background:rgba(255,255,255,.45);cursor:pointer;padding:0;transition:.2s}
.pcard .gdots button.on{background:var(--gold);width:20px;border-radius:5px}
.pcard .garrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;background:rgba(14,18,25,.6);border:1px solid var(--line2);color:#fff;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:.2s}
.pcard .gallery:hover .garrow{opacity:1}
.pcard .garrow.prev{left:10px}.pcard .garrow.next{right:10px}
.pcard .pb{padding:22px;display:flex;flex-direction:column;flex:1}
.okn-badge{align-self:flex-start;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--gold);border:1px solid var(--gold);border-radius:6px;padding:3px 9px;margin-bottom:12px}
.pcard h3{font-size:20px;margin-bottom:5px;line-height:1.2}
.pcard .meta{color:var(--mut);font-size:13px;margin-bottom:12px}
.pcard p{color:var(--sec);font-size:14px;line-height:1.55}

/* ---------- Светильники ---------- */
.lights-intro{color:var(--sec);font-size:16px;max-width:760px;margin:-20px 0 36px}
.lights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.lcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.lcard .lph{aspect-ratio:4/3;background:#0b0f16;object-fit:cover;width:100%}
.lcard .lb{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1}
.lcard h3{font-size:19px}
.lcard .use{color:var(--sec);font-size:14px;line-height:1.5;margin:0}
.spec{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:12px;color:var(--mut);border:1px solid var(--line);border-radius:7px;padding:6px 11px;font-variant-numeric:tabular-nums}
.lcard .btn{margin-top:auto}
.warranty{margin-top:28px;color:var(--mut);font-size:15px;display:flex;align-items:center;gap:10px}
.warranty svg{stroke:var(--gold);flex:none}

/* ---------- Как работаем ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.step .num{font-size:15px;font-weight:800;color:#1a1205;background:var(--grad);width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.step h3{font-size:17px;margin-bottom:9px}
.step p{color:var(--sec);font-size:14px;line-height:1.5}
.steps-cta{margin-top:36px;display:flex;justify-content:center}

/* ---------- Форма ---------- */
.form-sec{background:#0b0f16;border-top:1px solid var(--line)}
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.form-left h2{font-size:38px;margin-bottom:14px}
.form-left p{color:var(--sec);font-size:17px;max-width:460px;margin-bottom:28px}
.form-left .contacts{margin-top:30px;display:flex;flex-direction:column;gap:14px}
.form-left .contacts a{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-size:18px;font-weight:600}
.form-left .contacts a svg{stroke:var(--gold);flex:none}
.form-left .contacts a:hover{color:var(--gold)}
.lead-form{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--mut);margin-bottom:7px}
.field .req{color:var(--gold)}
.field input,.field textarea{width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:10px;padding:14px 15px;color:#fff;font-size:16px;font-family:inherit;transition:border-color .15s}
.field input::placeholder,.field textarea::placeholder{color:#7f8795}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--gold)}
.field.invalid input,.field.invalid textarea{border-color:#ff6b6b}
.field .err{display:none;color:#ff8a8a;font-size:13px;margin-top:6px}
.field.invalid .err{display:block}
.consent{display:flex;gap:12px;align-items:flex-start;font-size:13px;color:var(--mut);line-height:1.5;margin-bottom:22px;cursor:pointer}
.consent input{margin-top:1px;width:20px;height:20px;accent-color:var(--gold);flex:none;cursor:pointer}
.consent a{color:var(--gold)}
.form-note{margin-top:14px;font-size:12.5px;color:#9aa3b2;text-align:center}
.form-msg{display:none;padding:14px 16px;border-radius:10px;font-size:14px;margin-bottom:18px;background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.4);color:#ffb3b3}
.form-msg.show{display:block}
.form-success{display:none;text-align:center;padding:20px 0}
.form-success.show{display:block;animation:fade .3s ease}
.form-success .chk{width:72px;height:72px;border-radius:50%;background:rgba(250,170,30,.14);display:flex;align-items:center;justify-content:center;margin:0 auto 20px}
.form-success h3{font-size:24px;margin-bottom:10px}
.form-success p{color:var(--sec);font-size:16px;max-width:360px;margin:0 auto}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- Подвал ---------- */
.footer{background:#090c12;border-top:1px solid var(--line);padding:56px 0 30px}
.footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.footer .logo img{height:48px;margin-bottom:16px}
.footer .about-f{color:var(--sec);font-size:14px;line-height:1.6;max-width:320px}
.footer h4{font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:#fff;margin-bottom:16px}
.footer a{color:var(--sec);text-decoration:none;font-size:15px}
.footer a:hover{color:var(--gold)}
.footer .col-links{display:flex;flex-direction:column;gap:12px}
.footer .req{color:var(--mut);font-size:13px;line-height:1.7}
.footer .bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:24px;color:#8a93a3;font-size:13px}
.footer .bottom a{color:#8a93a3;font-size:13px}

/* ---------- Cookie-баннер ---------- */
.cookie{position:fixed;left:20px;right:20px;bottom:20px;z-index:70;max-width:520px;margin:0 auto;background:var(--card);border:1px solid var(--line2);border-radius:14px;padding:20px 22px;box-shadow:0 20px 60px rgba(0,0,0,.5);display:none}
.cookie.show{display:block;animation:cookieUp .35s var(--ease)}
@keyframes cookieUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.cookie p{color:var(--sec);font-size:13.5px;line-height:1.5;margin-bottom:14px}
.cookie p a{color:var(--gold)}
.cookie .row{display:flex;gap:10px}
.cookie .btn{padding:11px 22px;font-size:14px}

/* ---------- Якорь-прокрутка при скрытой шапке ---------- */
section[id]{scroll-margin-top:84px}

/* ---------- Адаптив ---------- */
@media(max-width:980px){
  .about .grid{grid-template-columns:1fr;gap:28px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .lights-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .stats .container{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(n+3){border-bottom:0}
  .stat:first-child{padding-left:32px}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .container{padding:0 20px}
  .nav{display:none}
  .header-phone .phone-link{display:none}
  .burger{display:flex}
  .section{padding:56px 0}
  .section-h{font-size:30px}
  .proj-grid{grid-template-columns:1fr}
  .form-left h2{font-size:28px}
  .hero{min-height:560px}
  .hero-grad{background:linear-gradient(180deg,rgba(14,18,25,.72) 0%,rgba(14,18,25,.55) 42%,rgba(14,18,25,.96) 100%)}
  .hero-btns .btn{width:100%}
  .footer .cols{grid-template-columns:1fr}
}
@media(max-width:520px){
  .svc-grid{grid-template-columns:1fr}
  .lights-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stats .container{grid-template-columns:1fr 1fr}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}