/* ПОКОВКА — лендинг (REBORN LAB). Без библиотек: только CSS и немного JS. */
@font-face{font-family:'Yanone';font-style:normal;font-weight:200 700;font-display:swap;src:url(fonts/3y976aknfjLm_3lMKjiMgmUUYBs04Y8fH-qVHQ.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Yanone';font-style:normal;font-weight:200 700;font-display:swap;src:url(fonts/3y976aknfjLm_3lMKjiMgmUUYBs04Y8bH-o.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'OpenSans';font-style:normal;font-weight:300 800;font-display:swap;src:url(fonts/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSumu1aB.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'OpenSans';font-style:normal;font-weight:300 800;font-display:swap;src:url(fonts/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --bg:#121519; --bg2:#181c22; --panel:#1f242c; --panel2:#262c35; --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.14);
  --tx:#eef0f2; --mut:#9aa3ae; --mut2:#6f7883;
  --fire:#ff6a2b; --fire2:#ffa040; --fire3:#e8461a; --hot:linear-gradient(135deg,#ffb04d 0%,#ff6a2b 45%,#e3401a 100%);
  --r:18px; --r2:12px; --wrap:1240px; --hdr:72px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --h:'Yanone','Yanone Kaffeesatz',Impact,sans-serif; --t:'OpenSans','Open Sans',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 12px);-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
body{margin:0;background:var(--bg);color:var(--tx);font:400 16px/1.6 var(--t);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--h);font-weight:700;line-height:1.02;letter-spacing:.005em;margin:0}
h2{font-size:clamp(38px,4.6vw,64px)}
h3{font-size:26px}
p{margin:0 0 1em}
button,input,select,textarea{font:inherit;color:inherit}
.wrap{width:min(var(--wrap),100% - 40px);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:fixed;left:12px;top:-60px;z-index:100;background:var(--fire);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--fire2);outline-offset:3px;border-radius:6px}
.kicker{display:inline-flex;align-items:center;gap:10px;font:600 13px/1 var(--t);letter-spacing:.16em;text-transform:uppercase;color:var(--fire2);margin:0 0 18px}
.kicker::before{content:"";width:28px;height:2px;background:var(--hot);border-radius:2px}
.muted{color:var(--mut2);font-size:14px}
.lbl{font:600 12px/1.2 var(--t);letter-spacing:.12em;text-transform:uppercase;color:var(--mut2);margin:0 0 8px}

/* ---------- кнопки ---------- */
.btn{--bh:56px;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:var(--bh);padding:0 28px;border:0;border-radius:14px;
  background:var(--hot);color:#fff;font:600 16px/1.1 var(--t);text-decoration:none;cursor:pointer;isolation:isolate;overflow:hidden;
  box-shadow:0 10px 30px -10px rgba(255,106,43,.75),inset 0 1px 0 rgba(255,255,255,.25);transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.btn svg{width:20px;height:20px;transition:transform .25s var(--ease)}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s var(--ease);z-index:-1}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 40px -12px rgba(255,106,43,.9),inset 0 1px 0 rgba(255,255,255,.3)}
.btn:hover::after{transform:translateX(120%)}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px var(--line2);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.08);box-shadow:inset 0 0 0 1px rgba(255,160,64,.6)}
.btn-sm{--bh:44px;padding:0 20px;font-size:15px;border-radius:12px}
.btn-full{width:100%}

/* ---------- шапка ---------- */
.hdr{position:fixed;inset:0 0 auto;z-index:50;height:var(--hdr);transition:background .3s,box-shadow .3s,backdrop-filter .3s}
.hdr.is-solid{background:rgba(18,21,25,.78);backdrop-filter:blur(14px) saturate(1.3);box-shadow:0 1px 0 var(--line)}
.hdr-in{height:100%;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto}
.logo-mark{width:38px;height:38px;border-radius:11px;background:var(--hot);position:relative;box-shadow:0 6px 18px -6px rgba(255,106,43,.9)}
.logo-mark::before{content:"";position:absolute;inset:9px 11px 9px 12px;border:3px solid #fff;border-right-width:0;border-radius:2px 0 0 2px;clip-path:polygon(0 0,100% 0,100% 62%,40% 62%,40% 100%,0 100%)}
.logo-t{font:700 20px/1 var(--h);letter-spacing:.04em;display:flex;flex-direction:column;gap:3px}
.logo-t small{font:500 11px/1 var(--t);letter-spacing:.06em;color:var(--mut);text-transform:lowercase}
.nav{display:flex;gap:26px}
.nav a{font-size:15px;color:#cfd4da;text-decoration:none;position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--hot);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav a:hover{color:#fff}.nav a:hover::after,.nav a.is-on::after{transform:scaleX(1)}
.hdr-tel{font:600 16px/1 var(--t);text-decoration:none;white-space:nowrap}
.burger{display:none;width:44px;height:44px;border:0;border-radius:12px;background:rgba(255,255,255,.06);cursor:pointer;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,top .3s}
.burger span:first-child{top:17px}.burger span:last-child{top:25px}
.nav-open .burger span:first-child{top:21px;transform:rotate(45deg)}.nav-open .burger span:last-child{top:21px;transform:rotate(-45deg)}

/* ---------- первый экран ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--hdr) + 40px) 0 40px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:62% 40%;transform:scale(1.08);animation:heroIn 2.4s var(--ease) forwards}
@keyframes heroIn{to{transform:scale(1)}}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:
  radial-gradient(120% 90% at 78% 40%,transparent 0,rgba(18,21,25,.35) 45%,rgba(18,21,25,.92) 85%),
  linear-gradient(90deg,rgba(18,21,25,.96) 0%,rgba(18,21,25,.75) 38%,rgba(18,21,25,.15) 70%),
  linear-gradient(0deg,var(--bg) 0%,transparent 35%)}
.sparks{position:absolute;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none;mix-blend-mode:screen}
.hero-in{max-width:var(--wrap)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.06);box-shadow:inset 0 0 0 1px var(--line2);backdrop-filter:blur(8px);font-size:14px;color:#dfe3e7;margin-bottom:26px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--fire);box-shadow:0 0 0 0 rgba(255,106,43,.7);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(255,106,43,0)}100%{box-shadow:0 0 0 0 rgba(255,106,43,0)}}
.hero h1{font-size:clamp(52px,7.2vw,108px);line-height:.92;max-width:14ch;text-shadow:0 4px 40px rgba(0,0,0,.4)}
.hero h1 em{font-style:normal;background:var(--hot);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 30px rgba(255,106,43,.35))}
.lead{font-size:clamp(17px,1.5vw,20px);color:#d3d8dd;max-width:600px;margin:26px 0 34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-note{margin:22px 0 0;max-width:520px;font-size:14px;color:var(--mut)}
.stats{list-style:none;margin:56px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border-radius:var(--r);background:rgba(24,28,34,.55);backdrop-filter:blur(16px) saturate(1.2);box-shadow:inset 0 0 0 1px var(--line2)}
.stats li{padding:26px 28px;position:relative}
.stats li+li::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:var(--line2)}
.stats b{display:block;font:700 clamp(40px,4vw,58px)/1 var(--h);color:#fff}
.stats b small{font-size:.5em;color:var(--fire2);font-weight:600;margin-right:2px}
.stats li>span{display:block;margin-top:8px;font-size:14px;line-height:1.4;color:var(--mut)}
.stats i{font-style:normal;color:var(--mut2)}

/* ---------- бегущая строка ---------- */
.marquee{border-block:1px solid var(--line);background:var(--bg2);overflow:hidden;padding:18px 0;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:56px;width:max-content;animation:mq 40s linear infinite}
.marquee span{font:600 22px/1 var(--h);letter-spacing:.08em;color:#8d96a1;white-space:nowrap;display:flex;align-items:center;gap:56px}
.marquee span::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--fire);opacity:.8}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- секции ---------- */
.sec{position:relative;padding:clamp(64px,8vw,116px) 0}
.sec-head{max-width:760px;margin-bottom:56px}
.sec-head p:not(.kicker){color:var(--mut);font-size:18px;margin:18px 0 0}

/* появление при прокрутке */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease) var(--d,0ms),transform .9s var(--ease) var(--d,0ms)}
.rv.in{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}

/* ---------- коротко ---------- */
.why{padding-top:80px}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why-card{background:linear-gradient(180deg,var(--panel),var(--bg2));border-radius:var(--r);padding:24px 24px 26px;box-shadow:inset 0 0 0 1px var(--line);transition:transform .4s var(--ease),box-shadow .4s}
.why-card:hover{transform:translateY(-6px);box-shadow:inset 0 0 0 1px rgba(255,160,64,.35),0 30px 60px -30px rgba(0,0,0,.8)}
.why-img{width:100%;max-width:220px;height:auto;margin:-6px 0 14px;filter:drop-shadow(0 18px 24px rgba(0,0,0,.45))}
.why-card p{margin:0;color:#cfd4da;font-size:15px}

/* ---------- технология ---------- */
.about-in{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center}
.about-txt>p{color:#c7cdd3}
.about-txt h2{margin-bottom:26px}
.facts{list-style:none;padding:0;margin:34px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.facts li{padding:18px 20px;border-radius:var(--r2);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
.facts b{display:block;font:700 30px/1 var(--h);color:var(--fire2)}
.facts span{font-size:14px;color:var(--mut)}
.about-art{position:relative;aspect-ratio:1/1}
.about-art .glow{position:absolute;inset:12% 10%;border-radius:50%;background:radial-gradient(circle,rgba(255,106,43,.45),rgba(255,106,43,0) 65%);filter:blur(20px);animation:breathe 5s ease-in-out infinite}
@keyframes breathe{50%{transform:scale(1.08);opacity:.75}}
.crane{position:absolute;right:4%;top:0;width:72%;filter:drop-shadow(0 40px 50px rgba(0,0,0,.6));transform:translateX(70%);opacity:0;transition:transform 1.4s var(--ease),opacity 1s}
.bars{position:absolute;left:-6%;bottom:2%;width:92%;filter:drop-shadow(0 30px 40px rgba(0,0,0,.6));transform:translateX(-30%);opacity:0;transition:transform 1.4s var(--ease) .2s,opacity 1s .2s}
.about-art.in .crane,.about-art.in .bars{transform:none;opacity:1}
.about-art.in .crane{animation:float 6s ease-in-out 1.4s infinite}
@keyframes float{50%{translate:0 -10px}}

/* ---------- продукция ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod{display:flex;flex-direction:column;border-radius:var(--r);background:var(--panel);overflow:hidden;box-shadow:inset 0 0 0 1px var(--line);transition:transform .45s var(--ease),box-shadow .45s}
.prod:hover{transform:translateY(-6px);box-shadow:inset 0 0 0 1px rgba(255,160,64,.35),0 30px 60px -30px rgba(0,0,0,.9)}
.prod-img{aspect-ratio:4/3;overflow:hidden;background:#0d0f12}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.prod:hover .prod-img img{transform:scale(1.06)}
.prod-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.prod h3{font-size:30px}
.prod-body>p{color:var(--mut);font-size:14px;margin:6px 0 16px}
.spec{list-style:none;padding:0;margin:auto 0 0;display:flex;flex-wrap:wrap;gap:8px}
.spec li{display:flex;align-items:baseline;gap:6px;padding:7px 11px;border-radius:10px;background:rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px var(--line);font-size:13px}
.spec span{color:var(--mut2)}
.spec b{font-weight:600;color:#fff}
.spec i{font-style:normal;color:var(--fire2);font-size:12px}
.prod-cta{justify-content:center;gap:10px;padding:28px;text-decoration:none;background:radial-gradient(120% 120% at 100% 0,rgba(255,106,43,.28),transparent 55%),var(--panel2);min-height:100%}
.prod-cta b{font:700 34px/1 var(--h)}
.prod-cta>span:not(.btn):not(.kicker){color:#c7cdd3;font-size:15px}
.prod-cta .kicker{margin:0}
.prod-cta .btn{align-self:flex-start;margin-top:10px}

/* ---------- марки стали ---------- */
.steel-box{display:grid;grid-template-columns:320px 1fr;border-radius:24px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);overflow:hidden;min-height:560px}
.steel-side{border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;background:var(--bg2)}
.steel-search{display:flex;align-items:center;gap:10px;margin:16px;padding:0 14px;height:48px;border-radius:12px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line2)}
.steel-search svg{width:18px;height:18px;color:var(--mut2);flex:none}
.steel-search input{flex:1;min-width:0;border:0;background:none;outline:0;height:100%}
.steel-list{flex:1;overflow:auto;padding:0 10px 16px;max-height:520px;scrollbar-width:thin;scrollbar-color:#3a414c transparent}
.steel-g{font:600 11px/1 var(--t);letter-spacing:.14em;text-transform:uppercase;color:var(--mut2);margin:14px 8px 6px}
.steel-i{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 12px;border-radius:10px;cursor:pointer;color:#cfd4da;font-size:15px;transition:background .2s,color .2s}
.steel-i:hover{background:rgba(255,255,255,.05);color:#fff}
.steel-i[aria-selected="true"]{background:linear-gradient(90deg,rgba(255,106,43,.22),rgba(255,106,43,.04));color:#fff;box-shadow:inset 3px 0 0 var(--fire)}
.steel-empty{margin:12px;color:var(--mut);font-size:14px}
.steel-view{display:flex;flex-direction:column}
.steel-photo{aspect-ratio:16/7;overflow:hidden;position:relative;background:#0d0f12}
.steel-photo img{width:100%;height:100%;object-fit:cover;transition:opacity .45s,transform 1.4s var(--ease)}
.steel-photo.swap img{opacity:0;transform:scale(1.04)}
.steel-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,var(--panel),transparent 50%)}
.steel-info{padding:0 36px 34px;margin-top:-30px;position:relative}
.steel-grp{color:var(--fire2);font-size:14px;margin:0 0 4px}
.steel-name{font-size:54px;margin-bottom:22px}
.steel-cols{display:grid;grid-template-columns:1.2fr 1fr;gap:30px}
.steel-std{list-style:none;padding:0;margin:0 0 4px}
.steel-std li{padding:8px 0;border-bottom:1px dashed var(--line2);font-size:15px}
.steel-cols p:not(.lbl){color:#cfd4da;font-size:15px;margin-bottom:18px}
.steel-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* ---------- калькулятор ---------- */
.calc{background:radial-gradient(80% 60% at 0% 50%,rgba(255,106,43,.08),transparent 60%),var(--bg2);border-block:1px solid var(--line)}
.calc-in{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:center}
.calc-txt p{color:#c7cdd3;font-size:17px}
.calc-txt h2{margin-bottom:22px}
.calc-box{padding:30px;border-radius:24px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line),0 40px 80px -40px rgba(0,0,0,.8)}
.seg{display:grid;grid-template-columns:repeat(3,1fr);padding:5px;border-radius:14px;background:var(--bg);box-shadow:inset 0 0 0 1px var(--line);margin-bottom:22px}
.seg button{border:0;background:none;padding:12px 8px;border-radius:10px;cursor:pointer;font-size:14px;color:var(--mut);transition:background .25s,color .25s}
.seg button[aria-selected="true"]{background:var(--panel2);color:#fff;box-shadow:inset 0 0 0 1px var(--line2),0 6px 14px -8px rgba(0,0,0,.8)}
.calc-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-fields label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--mut)}
.calc-fields input,.calc-fields select{height:50px;padding:0 14px;border-radius:12px;border:0;background:var(--bg);box-shadow:inset 0 0 0 1px var(--line2);color:#fff;font-size:17px;outline:0;transition:box-shadow .2s}
.calc-fields input:focus,.calc-fields select:focus{box-shadow:inset 0 0 0 2px var(--fire)}
.calc-fields select{font-size:15px;appearance:none;background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6' fill='none' stroke='%239aa3ae' stroke-width='2'/%3E%3C/svg%3E") right 12px center/18px no-repeat}
.calc-steel{grid-column:1/-1}
.calc-out{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 14px;margin:24px 0 18px;padding:20px 22px;border-radius:16px;background:linear-gradient(135deg,rgba(255,106,43,.16),rgba(255,106,43,.02));box-shadow:inset 0 0 0 1px rgba(255,106,43,.3)}
.calc-out span{font-size:14px;color:var(--mut)}
.calc-out output{font:700 48px/1 var(--h);color:#fff}
.calc-out small{width:100%;color:var(--mut);font-size:13px}
.calc-send{width:100%}

/* ---------- 12 причин ---------- */
.rs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rs{position:relative;padding:26px 26px 28px;border-radius:var(--r);background:linear-gradient(180deg,var(--panel),var(--bg2));box-shadow:inset 0 0 0 1px var(--line);overflow:hidden;transition:transform .45s var(--ease),box-shadow .45s}
.rs:hover{transform:translateY(-6px);box-shadow:inset 0 0 0 1px rgba(255,160,64,.35),0 30px 60px -30px rgba(0,0,0,.9)}
.rs::before{content:"";position:absolute;width:260px;height:260px;right:-60px;top:-60px;border-radius:50%;background:radial-gradient(circle,rgba(255,106,43,.22),transparent 65%);opacity:.6;transition:opacity .4s}
.rs:hover::before{opacity:1}
.rs-n{position:absolute;top:22px;left:26px;font:700 18px/1 var(--h);color:var(--fire2);letter-spacing:.06em}
.rs-img{height:190px;display:flex;align-items:center;justify-content:center;margin:6px 0 10px}
.rs-img img{max-height:100%;width:auto;filter:drop-shadow(0 22px 26px rgba(0,0,0,.55));transition:transform .8s var(--ease)}
.rs:hover .rs-img img{transform:scale(1.06) rotate(-1.5deg)}
.rs h3{font-size:28px;margin-bottom:8px}
.rs p{color:var(--mut);font-size:14px;margin:0}
.rs-big{grid-row:span 1}

/* ---------- качество ---------- */
.tests{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;counter-reset:t}
.tests::before{content:"";position:absolute;left:10%;right:10%;top:112px;height:2px;background:linear-gradient(90deg,transparent,var(--fire) 15%,var(--fire2) 85%,transparent);opacity:.5}
.test{padding:0 16px;text-align:center;position:relative}
.test-ic{height:96px;display:flex;align-items:flex-end;justify-content:center}
.test-ic img{max-height:96px;width:auto;filter:drop-shadow(0 12px 16px rgba(0,0,0,.5))}
.test-n{display:grid;place-items:center;width:34px;height:34px;margin:0 auto 18px;border-radius:50%;background:var(--bg);box-shadow:0 0 0 2px var(--fire),0 0 22px rgba(255,106,43,.5);font:700 18px/1 var(--h);color:#fff;position:relative;margin-top:-1px}
.test h3{font-size:24px;margin-bottom:8px}
.test p{color:var(--mut);font-size:13.5px;margin:0}
.certs{margin-top:80px;display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center;padding:34px;border-radius:24px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
.certs h3{font-size:36px;margin-bottom:14px}
.certs p{color:var(--mut);margin:0}
.cert-row{display:flex;gap:14px;overflow-x:auto;padding:6px 4px 12px;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:#3a414c transparent}
.cert{flex:0 0 150px;aspect-ratio:3/4.2;border:0;padding:0;border-radius:10px;overflow:hidden;background:#fff;cursor:zoom-in;scroll-snap-align:start;transform:rotate(var(--rot,0deg));transition:transform .35s var(--ease),box-shadow .35s;box-shadow:0 14px 30px -14px rgba(0,0,0,.9)}
.cert:nth-child(odd){--rot:-1.5deg}.cert:nth-child(even){--rot:1.5deg}
.cert:hover{transform:rotate(0) translateY(-6px) scale(1.03);box-shadow:0 26px 40px -16px rgba(0,0,0,.95)}
.cert img{width:100%;height:100%;object-fit:cover;object-position:top}
.lb{border:0;padding:0;background:transparent;max-width:min(92vw,1100px);max-height:92vh}
.lb::backdrop{background:rgba(8,10,12,.86);backdrop-filter:blur(6px)}
.lb img{max-height:88vh;width:auto;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb-x{position:fixed;top:18px;right:22px;width:48px;height:48px;border-radius:50%;border:0;background:rgba(255,255,255,.1);color:#fff;font-size:30px;line-height:1;cursor:pointer}

/* ---------- услуги ---------- */
.sv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sv{display:flex;flex-direction:column;border-radius:var(--r);background:var(--panel);overflow:hidden;box-shadow:inset 0 0 0 1px var(--line);transition:transform .45s var(--ease),box-shadow .45s}
.sv:hover{transform:translateY(-6px);box-shadow:inset 0 0 0 1px rgba(255,160,64,.35),0 30px 60px -30px rgba(0,0,0,.9)}
.sv-img{aspect-ratio:366/247;overflow:hidden}
.sv-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.sv:hover .sv-img img{transform:scale(1.06)}
.sv-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.sv h3{font-size:28px;margin-bottom:10px}
.sv p{color:var(--mut);font-size:14px}
.sv-link{margin-top:auto;display:inline-flex;align-items:center;gap:8px;color:var(--fire2);text-decoration:none;font-weight:600;font-size:15px}
.sv-link svg{width:18px;height:18px;transition:transform .25s}
.sv-link:hover svg{transform:translateX(4px)}

/* ---------- как работаем ---------- */
.how{background:var(--bg2);border-block:1px solid var(--line)}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.steps li{padding:28px;border-radius:var(--r);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);position:relative;overflow:hidden}
.steps b{display:block;font:700 64px/1 var(--h);background:var(--hot);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}
.steps h3{font-size:28px;margin-bottom:8px}
.steps p{color:var(--mut);font-size:14px;margin:0}

/* ---------- доставка ---------- */
.delivery{overflow:hidden;display:flex;align-items:center;min-height:min(62vw,820px)}
.map-fig{position:absolute;right:-6%;top:50%;width:min(74%,1280px);aspect-ratio:1920/1112;margin:0;transform:translateY(-50%);z-index:-1}
.map-img{width:100%;height:100%;object-fit:contain;
  -webkit-mask:linear-gradient(90deg,transparent,#000 16%,#000 86%,transparent),linear-gradient(0deg,transparent,#000 16%,#000 84%,transparent);-webkit-mask-composite:source-in;
  mask:linear-gradient(90deg,transparent,#000 16%,#000 86%,transparent),linear-gradient(0deg,transparent,#000 16%,#000 84%,transparent);mask-composite:intersect}
.pin{position:absolute;left:var(--x);top:var(--y);width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;background:var(--fire);animation:pin 2.4s infinite;z-index:1}
.pin::after{content:"";position:absolute;inset:-6px;border-radius:50%;box-shadow:0 0 30px 6px rgba(255,106,43,.7)}
.pin i{position:absolute;left:24px;top:50%;transform:translateY(-50%);font:600 13px/1 var(--t);font-style:normal;color:#fff;background:var(--fire);padding:6px 10px;border-radius:6px;white-space:nowrap;box-shadow:0 8px 20px -6px rgba(255,106,43,.8)}
@keyframes pin{0%{box-shadow:0 0 0 0 rgba(255,106,43,.6)}100%{box-shadow:0 0 0 46px rgba(255,106,43,0)}}
.dl-card{max-width:520px;padding:40px;border-radius:24px;background:rgba(24,28,34,.78);backdrop-filter:blur(16px);box-shadow:inset 0 0 0 1px var(--line2),0 40px 80px -40px rgba(0,0,0,.8)}
.dl-card h2{margin-bottom:16px}
.dl-card>p{color:#c7cdd3}
.ticks{list-style:none;padding:0;margin:18px 0 28px;display:grid;gap:12px}
.ticks li{position:relative;padding-left:32px;color:#d3d8dd}
.ticks li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;background:var(--hot);box-shadow:0 0 14px rgba(255,106,43,.5)}
.ticks li::after{content:"";position:absolute;left:6px;top:8px;width:8px;height:5px;border:2px solid #fff;border-top:0;border-right:0;transform:rotate(-45deg)}

/* ---------- вопросы ---------- */
.faq-in{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
.faq-list details{border-bottom:1px solid var(--line2)}
.faq-list summary{list-style:none;cursor:pointer;padding:22px 44px 22px 0;font:600 18px/1.4 var(--t);position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"";position:absolute;right:6px;top:50%;width:14px;height:14px;margin-top:-10px;border-right:2px solid var(--fire2);border-bottom:2px solid var(--fire2);transform:rotate(45deg);transition:transform .3s var(--ease),margin .3s}
.faq-list details[open] summary::after{transform:rotate(-135deg);margin-top:-2px}
.faq-list details p{color:var(--mut);padding:0 40px 22px 0;margin:0;animation:fadeD .4s var(--ease)}
@keyframes fadeD{from{opacity:0;transform:translateY(-6px)}}

/* ---------- заявка ---------- */
.order{overflow:hidden;isolation:isolate}
.order-bg{position:absolute;inset:0;z-index:-1}
.order-bg img{width:100%;height:100%;object-fit:cover}
.order::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(18,21,25,.95) 20%,rgba(18,21,25,.55) 60%,rgba(18,21,25,.8)),linear-gradient(0deg,var(--bg),transparent 30%,transparent 70%,var(--bg))}
.order-in{display:grid;grid-template-columns:1fr 480px;gap:60px;align-items:center}
.order-txt h2{margin-bottom:12px}
.order-tel{font-size:18px;color:#d3d8dd}
.order-tel a{color:#fff;font-weight:700;text-decoration:none;border-bottom:1px solid var(--fire)}
.form{padding:34px;border-radius:24px;background:rgba(24,28,34,.82);backdrop-filter:blur(18px) saturate(1.2);box-shadow:inset 0 0 0 1px var(--line2),0 50px 100px -40px rgba(0,0,0,.9)}
.form h3{font-size:36px;margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fl{position:relative;display:block;margin-bottom:12px}
.fl input,.fl textarea{width:100%;border:0;border-radius:12px;background:var(--bg);box-shadow:inset 0 0 0 1px var(--line2);padding:24px 14px 8px;outline:0;color:#fff;font-size:16px;transition:box-shadow .2s;resize:vertical}
.fl input{height:58px}
.fl textarea{min-height:96px}
.fl span{position:absolute;left:15px;top:18px;color:var(--mut2);font-size:15px;pointer-events:none;transition:all .2s var(--ease)}
.fl input:focus,.fl textarea:focus{box-shadow:inset 0 0 0 2px var(--fire)}
.fl input:focus+span,.fl input:not(:placeholder-shown)+span,.fl textarea:focus+span,.fl textarea:not(:placeholder-shown)+span{top:8px;font-size:12px;color:var(--fire2)}
.fl.bad input{box-shadow:inset 0 0 0 2px #e5484d}
.file{display:flex;align-items:center;gap:10px;padding:14px;border-radius:12px;border:1px dashed var(--line2);color:var(--mut);cursor:pointer;font-size:14px;margin-bottom:14px;transition:border-color .2s,color .2s}
.file:hover{border-color:var(--fire2);color:#fff}
.file input{position:absolute;width:1px;height:1px;opacity:0}
.file svg{width:20px;height:20px;flex:none}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.agree{display:flex;gap:12px;align-items:flex-start;font-size:13px;color:var(--mut);margin:4px 0 18px;cursor:pointer}
.agree input{flex:none;width:20px;height:20px;margin:1px 0 0;accent-color:var(--fire)}
.agree a{color:#cfd4da}
.agree.bad span{color:#ff8a8d}
.form-msg{margin:12px 0 0;font-size:14px;min-height:1.4em;color:var(--mut)}
.form-msg.ok{color:#4ade80}.form-msg.err{color:#ff8a8d}

/* ---------- контакты и подвал ---------- */
.contacts{padding-top:60px}
.contacts h2{margin-bottom:34px}
.ct-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ct{padding:28px;border-radius:var(--r);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
.ct p:not(.lbl){color:#cfd4da}
.ct a{text-decoration:none}
.ct a:hover{color:var(--fire2)}
.ct-big{display:block;font:700 30px/1.1 var(--h);color:#fff;margin:0}
.ftr{border-top:1px solid var(--line);padding:26px 0 30px;color:var(--mut2);font-size:13px}
.ftr-in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.ftr a{color:var(--mut)}
.m-bar{display:none}

/* ---------- адаптив ---------- */
@media (max-width:1180px){
  .nav{gap:18px}.nav a{font-size:14px}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .tests{grid-template-columns:repeat(3,1fr);row-gap:40px}.tests::before{display:none}
}
@media (max-width:1024px){
  :root{--hdr:64px}
  .nav,.hdr-tel{display:none}
  .burger{display:block}
  .nav-open .nav{display:flex;position:fixed;inset:var(--hdr) 0 auto;flex-direction:column;gap:0;padding:12px 20px 24px;background:rgba(18,21,25,.97);backdrop-filter:blur(14px);box-shadow:0 20px 40px rgba(0,0,0,.5)}
  .nav-open .nav a{font-size:20px;padding:14px 0;border-bottom:1px solid var(--line)}
  .stats{grid-template-columns:repeat(2,1fr)}.stats li:nth-child(3)::before{display:none}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .about-in,.calc-in,.order-in,.faq-in{grid-template-columns:1fr}
  .about-art{max-width:520px;margin:0 auto;width:100%}
  .steel-box{grid-template-columns:1fr}
  .steel-side{border-right:0;border-bottom:1px solid var(--line)}
  .steel-list{display:flex;gap:8px;overflow-x:auto;padding:0 16px 16px;max-height:none}
  .steel-g{display:none}
  .steel-i{flex:none;width:auto;white-space:nowrap;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
  .steel-i[aria-selected="true"]{box-shadow:inset 0 0 0 1px var(--fire)}
  .rs-grid,.sv-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:1fr}
  .ct-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:15px}
  .wrap{width:calc(100% - 32px)}
  .logo-t small{display:none}
  .hdr .btn-sm{display:none}
  .hero{min-height:auto;padding-top:calc(var(--hdr) + 28px)}
  .hero::before{background:linear-gradient(180deg,rgba(18,21,25,.55) 0%,rgba(18,21,25,.82) 45%,var(--bg) 100%)}
  .hero h1{font-size:clamp(46px,13vw,64px)}
  .hero-cta .btn{flex:1 1 100%}
  .stats{margin-top:36px}
  .stats li{padding:18px}
  .stats li>span{font-size:12.5px}
  .marquee span{font-size:18px}
  .why-grid,.prod-grid,.rs-grid,.sv-grid,.steps,.ct-grid{grid-template-columns:1fr}
  .why-card{display:flex;align-items:center;gap:16px;padding:16px}
  .why-img{width:110px;margin:0;flex:none}
  .facts{grid-template-columns:1fr 1fr}
  .steel-info{padding:0 20px 24px}
  .steel-name{font-size:42px}
  .steel-cols{grid-template-columns:1fr;gap:6px}
  .calc-box,.form,.dl-card{padding:22px}
  .calc-out output{font-size:40px}
  .seg button{font-size:13px;padding:11px 4px}
  .tests{grid-template-columns:1fr 1fr}
  .test{padding:0 6px}
  .certs{padding:22px}
  .cert{flex-basis:120px}
  .delivery{min-height:auto;flex-direction:column;align-items:stretch;padding-top:24px}
  .map-fig{position:relative;right:auto;top:auto;transform:none;width:150%;margin:0 0 -18% -12%}
  .pin i{font-size:11px;padding:4px 7px;left:18px}
  .form-row{grid-template-columns:1fr}
  .m-bar{display:grid;grid-template-columns:1fr 1.4fr;gap:10px;position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:40;transform:translateY(140%);transition:transform .4s var(--ease)}
  .m-bar.show{transform:none}
  .m-bar .btn{--bh:52px}
  .ftr{padding-bottom:96px}
}

/* колонки сеток не растягиваются по содержимому (лента марок, поля калькулятора, сертификаты) */
.steel-box>*,.calc-in>*,.certs>*,.about-in>*,.order-in>*,.faq-in>*,.form-row>*,.calc-fields>*{min-width:0}
.calc-fields input,.calc-fields select,.fl input,.fl textarea{width:100%;min-width:0}
@media (max-width:1024px){
  .steel-box,.calc-in,.certs,.about-in,.order-in,.faq-in{grid-template-columns:minmax(0,1fr)}
}