/* ==========================================================================
   AST-MAR — основной стиль сайта
   Палитра: графит / бетон / сигнальный янтарь / чертёжный циан
   ========================================================================== */

:root{
  --ink:#0E1417;
  --ink-2:#141C21;
  --ink-3:#1B262B;
  --line:#26333A;
  --steel:#8E9AA1;
  --concrete:#C3C8C1;
  --paper:#F2F1EC;
  --paper-2:#E4E3DC;
  --amber:#F2A71B;
  --amber-d:#C8860A;
  --cyan:#7FC8D8;
  --ok:#57B87C;
  --err:#E2685B;

  --font-display:'Oswald','Noto Sans Armenian',system-ui,sans-serif;
  --font-body:'IBM Plex Sans','Noto Sans Armenian',system-ui,sans-serif;

  --wrap:1200px;
  --pad:clamp(18px,4vw,40px);
  --r:2px;
  --shadow:0 18px 50px rgba(0,0,0,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink);color:var(--paper);
  font-family:var(--font-body);font-size:17px;line-height:1.62;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:500;line-height:1.1;margin:0;letter-spacing:.01em}
h1{font-size:clamp(30px,4.6vw,56px)}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(19px,2vw,24px)}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}
.sect{padding:clamp(60px,8vw,110px) 0;position:relative}
.sect--paper{background:var(--paper);color:var(--ink)}
.sect--paper .sect-note{color:#5B655F}
.sect-head{max-width:720px;margin-bottom:clamp(30px,5vw,56px)}
.sect-head p{color:var(--steel);margin-top:14px;max-width:62ch}
.sect--paper .sect-head p{color:#4C554F}
.rule{width:56px;height:4px;background:var(--amber);margin-bottom:22px}

/* ---------- кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border:1px solid transparent;border-radius:var(--r);
  font-family:var(--font-display);font-size:16px;letter-spacing:.03em;
  font-weight:400;white-space:nowrap;line-height:1.2;
  cursor:pointer;transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--amber{background:var(--amber);color:#1A1205;font-weight:500}
.btn--amber:hover{background:#FFB931}
.btn--ghost{border-color:var(--line);color:var(--paper);background:transparent}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber)}
.sect--paper .btn--ghost{border-color:#C9CCC4;color:var(--ink)}

/* ---------- шапка ---------- */
.hdr{
  position:fixed;inset:0 0 auto 0;z-index:60;
  background:rgba(14,20,23,.55);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:background .35s,border-color .35s,padding .35s;
}
.hdr.is-stuck{background:rgba(14,20,23,.95);border-bottom-color:var(--line)}
.hdr__in{display:flex;align-items:center;flex-wrap:nowrap;gap:18px;height:74px;max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}
.brand{display:flex;align-items:center;gap:11px;color:var(--paper);flex:none;white-space:nowrap}
.brand svg{width:38px;height:38px;flex:none;will-change:transform;transform-origin:50% 50%}
.brand:hover svg{transition:transform .6s var(--ease)}
.brand b{font-family:var(--font-display);font-size:22px;letter-spacing:.06em;font-weight:600;display:block;line-height:1}
.brand span{font-size:11.5px;color:var(--steel);letter-spacing:.14em;display:block;line-height:1}
.hdr .brand>span{display:flex;align-items:center}
.hdr .brand>span>span{display:none}
.nav{display:flex;align-items:center;flex-wrap:nowrap;gap:2px;margin-inline:auto}
.nav a{
  padding:9px 10px;font-family:var(--font-display);font-size:15px;letter-spacing:.01em;line-height:1;
  color:#C4CCD0;position:relative;transition:color .2s;white-space:nowrap;
}
.nav a::after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav a:hover{color:#fff}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1)}
.hdr__side{display:flex;align-items:center;gap:12px;flex:none;white-space:nowrap}
.lang{display:flex;align-items:center;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;flex:none}
.lang button{
  background:none;border:0;padding:7px 10px;line-height:1;font-family:var(--font-display);font-size:14px;
  color:var(--steel);cursor:pointer;transition:background .2s,color .2s;
}
.lang button:hover{color:#fff}
.lang button.is-on{background:var(--amber);color:#1A1205;font-weight:600}
.hdr__tel{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:15.5px;line-height:1;white-space:nowrap;flex:none}
.hdr__tel svg{width:17px;height:17px;color:var(--amber)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:none;border-radius:var(--r);cursor:pointer;position:relative}
.burger i{position:absolute;left:12px;right:12px;height:2px;background:var(--paper);transition:transform .3s var(--ease),opacity .2s}
.burger i:nth-child(1){top:15px}.burger i:nth-child(2){top:21px}.burger i:nth-child(3){top:27px}
.burger.is-on i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.is-on i:nth-child(2){opacity:0}
.burger.is-on i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- герой-слайдер ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding-top:74px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto 0 0 0;height:160px;background:linear-gradient(to bottom,transparent,var(--ink));pointer-events:none}
.hero__bg{position:absolute;inset:0;background:
  radial-gradient(900px 480px at 78% 34%,rgba(242,167,27,.10),transparent 68%),
  radial-gradient(700px 420px at 12% 78%,rgba(127,200,216,.07),transparent 70%);}
.hero__grid{position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(var(--ink-3) 1px,transparent 1px),linear-gradient(90deg,var(--ink-3) 1px,transparent 1px);
  background-size:60px 60px;mask-image:radial-gradient(75% 65% at 50% 45%,#000 30%,transparent 100%);}
.slides{position:relative;width:100%;z-index:2}
.slide{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,60px);align-items:center;
  position:absolute;inset:0;opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .7s var(--ease),visibility .7s;
}
.slide.is-on{position:relative;opacity:1;visibility:visible;pointer-events:auto}
.slide__kick{font-family:var(--font-display);font-size:15px;letter-spacing:.2em;color:var(--amber);margin-bottom:16px;display:flex;align-items:center;gap:12px}
.slide__kick::before{content:"";width:34px;height:2px;background:var(--amber)}
.slide h1{margin-bottom:18px;max-width:17ch}
.slide p{color:#BBC4C8;max-width:52ch;font-size:clamp(16px,1.35vw,19px)}
.slide__btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.slide__art{position:relative}
.slide__art img{width:100%;border:1px solid var(--line);background:var(--ink-2)}
.slide.is-on .slide__txt>*{animation:riseIn .7s var(--ease) both}
.slide.is-on .slide__txt>*:nth-child(2){animation-delay:.08s}
.slide.is-on .slide__txt>*:nth-child(3){animation-delay:.16s}
.slide.is-on .slide__txt>*:nth-child(4){animation-delay:.24s}
.slide.is-on .slide__art{animation:artIn .9s var(--ease) both}
@keyframes riseIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
@keyframes artIn{from{opacity:0;transform:translateX(34px) scale(.97)}to{opacity:1;transform:none}}

.hero__ctl{display:flex;align-items:center;gap:18px;margin-top:38px;position:relative;z-index:3}
.dots{display:flex;gap:10px}
.dots button{
  width:38px;height:4px;border:0;background:var(--line);cursor:pointer;padding:0;position:relative;overflow:hidden;
}
.dots button.is-on{background:#3A4A52}
.dots button.is-on::after{content:"";position:absolute;inset:0;background:var(--amber);transform-origin:left;animation:fill var(--dur,6s) linear forwards}
@keyframes fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.arrow{width:44px;height:44px;border:1px solid var(--line);background:none;cursor:pointer;color:var(--paper);display:grid;place-items:center;transition:border-color .2s,color .2s,transform .2s}
.arrow:hover{border-color:var(--amber);color:var(--amber);transform:translateY(-2px)}

/* ---------- бегущая строка ---------- */
.marquee{border-block:1px solid var(--line);background:var(--ink-2);overflow:hidden;padding:14px 0}
.marquee__row{display:flex;gap:46px;width:max-content;animation:slideX 32s linear infinite}
.marquee:hover .marquee__row{animation-play-state:paused}
.marquee span{font-family:var(--font-display);font-size:17px;letter-spacing:.12em;color:var(--steel);display:flex;align-items:center;gap:46px}
.marquee span::after{content:"";width:7px;height:7px;background:var(--amber);transform:rotate(45deg)}
@keyframes slideX{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- цифры ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{background:var(--ink);padding:30px 26px}
.stat b{display:block;font-family:var(--font-display);font-size:clamp(24px,2.7vw,34px);color:var(--amber);line-height:1.15}
.stat span{display:block;margin-top:8px;color:var(--steel);font-size:14.5px;line-height:1.45}

/* ---------- продукция ---------- */
.prods{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px}
.prod{
  background:var(--ink-2);border:1px solid var(--line);display:flex;flex-direction:column;
  transition:border-color .3s,transform .4s var(--ease);position:relative;overflow:hidden;
}
.prod::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.prod:hover{transform:translateY(-6px);border-color:#3A4A52}
.prod:hover::before{transform:scaleX(1)}
.prod__img{background:var(--ink);border-bottom:1px solid var(--line);overflow:hidden}
.prod__img img{width:100%;transition:transform .7s var(--ease)}
.prod:hover .prod__img img{transform:scale(1.06)}
.prod__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.prod__body p{color:var(--steel);font-size:15.5px;margin:0}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.tag{border:1px solid var(--line);padding:4px 10px;font-size:13px;color:var(--cyan);font-family:var(--font-body)}
.prod__more{
  margin-top:14px;border:0;background:none;color:var(--amber);cursor:pointer;padding:0;
  font-family:var(--font-display);font-size:16px;display:flex;align-items:center;gap:9px;
}
.prod__more svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.prod__more:hover svg{transform:translateX(4px)}

/* модальное окно изделия */
.modal{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:20px;visibility:hidden;opacity:0;transition:opacity .3s,visibility .3s}
.modal.is-on{visibility:visible;opacity:1}
.modal__bg{position:absolute;inset:0;background:rgba(6,9,11,.82);backdrop-filter:blur(4px)}
.modal__box{
  position:relative;background:var(--ink-2);border:1px solid var(--line);max-width:940px;width:100%;
  max-height:88vh;overflow:auto;transform:translateY(24px) scale(.98);transition:transform .35s var(--ease);
}
.modal.is-on .modal__box{transform:none}
.modal__grid{display:grid;grid-template-columns:1fr 1fr}
.modal__grid>div:last-child{padding:30px}
.modal__x{position:absolute;top:12px;right:12px;width:42px;height:42px;border:1px solid var(--line);background:rgba(14,20,23,.8);color:var(--paper);cursor:pointer;font-size:22px;line-height:1}
.modal__x:hover{border-color:var(--amber);color:var(--amber)}
table.spec{width:100%;border-collapse:collapse;margin:18px 0 22px}
table.spec td{padding:11px 0;border-bottom:1px solid var(--line);font-size:15.5px;vertical-align:top}
table.spec td:first-child{color:var(--steel);width:44%;padding-right:16px}

/* ---------- о компании ---------- */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:start}
.about__lead{font-size:clamp(19px,1.9vw,23px);line-height:1.5;font-family:var(--font-display);font-weight:400;color:var(--ink)}
.points{display:grid;gap:1px;background:#D4D6CF;border:1px solid #D4D6CF}
.point{background:var(--paper);padding:22px 24px}
.point h3{font-size:19px;margin-bottom:6px}
.point p{margin:0;color:#59625C;font-size:15.5px}
.about__facts{border:1px solid #D4D6CF;padding:24px}
.about__facts dl{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;margin:0;font-size:15px}
.about__facts dt{color:#6C746E}
.about__facts dd{margin:0;font-family:var(--font-display);letter-spacing:.02em}

/* ---------- процесс ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:s}
.step{position:relative;padding-top:30px}
.step::before{content:"";position:absolute;top:8px;left:0;right:0;height:1px;background:var(--line)}
.step::after{counter-increment:s;content:counter(s);position:absolute;top:0;left:0;width:18px;height:18px;background:var(--amber);color:#1A1205;font-family:var(--font-display);font-size:12px;display:grid;place-items:center;font-weight:600}
.step h3{font-size:19px;margin-bottom:8px}
.step p{color:var(--steel);font-size:15px;margin:0}

/* ---------- документы ---------- */
.docs{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.doc{border:1px solid var(--line);background:var(--ink-2);display:flex;flex-direction:column;transition:transform .4s var(--ease),border-color .3s}
.doc:hover{transform:translateY(-6px);border-color:var(--amber)}
.doc__thumb{aspect-ratio:1/1.3;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);position:relative}
.doc__thumb img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .8s var(--ease)}
.doc:hover .doc__thumb img{transform:scale(1.05)}
.doc__body{padding:20px 22px 24px}
.doc__body h3{font-size:18.5px;margin-bottom:6px}
.doc__body p{color:var(--steel);font-size:14.5px;margin:0 0 14px}
.doc__dl{display:inline-flex;align-items:center;gap:9px;color:var(--amber);font-family:var(--font-display);font-size:15.5px}
.doc__dl svg{width:16px;height:16px}

/* ---------- контакты ---------- */
.contact{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(28px,5vw,56px)}
.cbox{border:1px solid var(--line);padding:26px}
.clist{display:grid;gap:18px;margin:0 0 26px}
.citem{display:flex;gap:14px;align-items:flex-start}
.citem svg{width:20px;height:20px;color:var(--amber);flex:none;margin-top:4px}
.citem b{display:block;font-family:var(--font-display);font-size:17.5px;font-weight:500}
.citem span{color:var(--steel);font-size:14.5px}
.socials{display:flex;gap:12px;flex-wrap:wrap}
.socials a{
  width:46px;height:46px;border:1px solid var(--line);display:grid;place-items:center;
  transition:transform .25s var(--ease),border-color .25s,background .25s,color .25s;
}
.socials a:hover{transform:translateY(-4px);border-color:var(--amber);background:var(--amber);color:#1A1205}
.socials svg{width:21px;height:21px}
.form{display:grid;gap:14px}
.field label{display:block;font-size:13.5px;color:var(--steel);margin-bottom:6px}
.field input,.field textarea{
  width:100%;background:var(--ink-2);border:1px solid var(--line);padding:13px 15px;border-radius:var(--r);
  transition:border-color .25s,background .25s;
}
.field input:focus,.field textarea:focus{border-color:var(--amber);background:#111A1E;outline:none}
.field textarea{min-height:120px;resize:vertical}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form__msg{font-size:15px;min-height:22px}
.form__msg.ok{color:var(--ok)}
.form__msg.err{color:var(--err)}
.map{border:1px solid var(--line);height:320px;margin-top:26px;filter:grayscale(1) contrast(.95) brightness(.85);transition:filter .5s}
.map:hover{filter:none}
.map iframe{width:100%;height:100%;border:0;display:block}

/* ---------- призыв ---------- */
.cta{background:var(--amber);color:#1A1205;padding:clamp(34px,5vw,54px);display:flex;gap:30px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta h2{max-width:20ch}
.cta p{margin:10px 0 0;max-width:48ch;color:#4A3505}

/* ---------- подвал ---------- */
.ftr{background:var(--ink-2);border-top:1px solid var(--line);padding:56px 0 26px;font-size:15px}
.ftr__grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:34px}
.ftr h4{font-family:var(--font-display);font-size:17px;margin-bottom:14px;letter-spacing:.03em}
.ftr a{color:var(--steel);transition:color .2s}
.ftr a:hover{color:var(--amber)}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.ftr__bottom{border-top:1px solid var(--line);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#6C7A81;font-size:13.5px}

/* ---------- наверх ---------- */
.top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;background:var(--amber);color:#1A1205;
  border:0;cursor:pointer;display:grid;place-items:center;z-index:50;
  opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .3s,transform .3s var(--ease);
}
.top.is-on{opacity:1;transform:none;pointer-events:auto}
.top:hover{background:#FFB931}

/* ---------- появление при прокрутке ---------- */
.rv{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.is-in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.rv-d4{transition-delay:.32s}.rv-d5{transition-delay:.4s}.rv-d6{transition-delay:.48s}

/* ---------- адаптив ---------- */
@media(max-width:1180px){
  .nav{position:fixed;inset:74px 0 auto 0;flex-direction:column;background:rgba(14,20,23,.98);
    border-bottom:1px solid var(--line);padding:14px var(--pad) 22px;gap:2px;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.3s var(--ease)}
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:13px 4px;font-size:18px;border-bottom:1px solid var(--ink-3)}
  .nav a::after{display:none}
  .burger{display:block}
  .hdr__tel{display:none}
  .steps{grid-template-columns:repeat(2,1fr);gap:26px}
  .about,.contact,.ftr__grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:820px){
  body{font-size:16px}
  .slide{grid-template-columns:1fr;gap:26px}
  .slide__art{order:-1}
  .slide h1{max-width:none}
  .hero{min-height:auto;padding-block:110px 60px}
  .modal__grid{grid-template-columns:1fr}
  .modal__grid>div:last-child{padding:24px}
}
@media(max-width:520px){
  .steps,.form__row{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .brand span{display:none}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* печать */
@media print{.hdr,.top,.hero__ctl,.marquee{display:none}body{background:#fff;color:#000}}