/* Шрифты локально (раньше — Google Fonts) */
@font-face{font-family:Onest;font-style:normal;font-weight:100 900;font-display:swap;src:url(../fonts/onest-cyrillic-wght-normal.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:100 900;font-display:swap;src:url(../fonts/onest-latin-wght-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/jetbrains-mono-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* Фин Кровля Сендвич — общий стиль */
:root{
  --bg:#f4f3f0; --surface:#fff; --ink:#15181c; --muted:#5d636b; --line:#dcdad4;
  --steel:#171b20; --steel-2:#232a31; --steel-3:#2e363e;
  --accent:#e2531f; --accent-2:#c9461a; --accent-ink:#fff;
  --r:16px; --max:1240px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Onest,system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.mono{font-family:"JetBrains Mono",monospace;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase}
.accent{color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 26px;border-radius:999px;font-weight:600;border:0;cursor:pointer;transition:transform .2s var(--ease),background .2s,box-shadow .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn svg{width:18px;height:18px}
.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:0 10px 30px -10px rgba(226,83,31,.7)}
.btn-accent:hover{background:var(--accent-2)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--accent)}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.35)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px #fff}
.btn-line{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-line:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn-sm{padding:10px 18px;font-size:.9rem}

/* header */
header{position:fixed;inset:0 0 auto;z-index:60;transition:background .3s,box-shadow .3s}
header.scrolled,body.solid header{background:rgba(23,27,32,.94);backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;gap:28px;height:76px;color:#fff}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.01em;line-height:1.15;margin-right:auto}
.logo-mark{width:36px;height:36px;flex:none}
.logo small{display:block;font-weight:500;font-size:.72rem;opacity:.6;letter-spacing:.02em}
.menu{display:flex;gap:26px;list-style:none;font-size:.94rem}
.menu a{opacity:.75;transition:opacity .2s;position:relative}
.menu a:hover,.menu a.active{opacity:1}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--accent)}
.nav-phone{font-weight:700;white-space:nowrap}
.burger{display:none;background:none;border:0;color:#fff;cursor:pointer}

/* hero */
.hero{position:relative;background:var(--steel);color:#fff;overflow:hidden;padding:160px 0 0;min-height:100vh;display:flex;flex-direction:column}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg video{width:100%;height:100%;object-fit:cover;opacity:.35}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(90deg,transparent 0 78px,rgba(255,255,255,.03) 78px 80px),
  radial-gradient(ellipse at 78% 30%,rgba(226,83,31,.28),transparent 55%),
  linear-gradient(180deg,rgba(23,27,32,.2),rgba(23,27,32,.85))}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;flex:1}
.hero h1{font-size:clamp(2.4rem,5.6vw,4.7rem);line-height:1;letter-spacing:-.035em;margin:20px 0 24px;font-weight:800}
.hero p.lead{font-size:1.18rem;color:rgba(255,255,255,.72);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-visual{position:relative;will-change:transform}
.hero-visual svg{width:100%;height:auto;filter:drop-shadow(0 50px 60px rgba(0,0,0,.5))}
.hero-3d{width:100%;aspect-ratio:1/.9;position:relative}
.hero-3d::before{content:"";position:absolute;inset:12% 10%;background:radial-gradient(circle,rgba(226,83,31,.28),transparent 65%);filter:blur(30px);z-index:-1}
.hero-3d canvas{opacity:0;transition:opacity 1s}
.hero-3d.ready canvas{opacity:1}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:-10px}
.hero-tags span{padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);font-size:.85rem;font-weight:600}
.hero-color{text-align:center;margin-top:14px;color:rgba(255,255,255,.5)}
.hero-color b{color:#fff;font-weight:500;transition:opacity .25s}
.badge{display:inline-flex;align-items:center;gap:10px;padding:8px 14px 8px 10px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1)}
.badge i{width:8px;height:8px;border-radius:50%;background:#3ddc84;box-shadow:0 0 0 4px rgba(61,220,132,.2)}
.hero-stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);margin-top:60px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stats div{padding:26px 20px 30px 0}
.hero-stats b{display:block;font-size:clamp(1.5rem,2.6vw,2.2rem);font-weight:800;letter-spacing:-.02em}
.hero-stats span{font-size:.86rem;color:rgba(255,255,255,.55)}

/* page hero (subpages) */
.page-hero{background:var(--steel);color:#fff;padding:150px 0 80px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 78px,rgba(255,255,255,.03) 78px 80px),radial-gradient(ellipse at 85% 10%,rgba(226,83,31,.25),transparent 55%)}
.page-hero .wrap{position:relative}
.page-hero h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.02;letter-spacing:-.03em;font-weight:800;margin:18px 0 18px;max-width:900px}
.page-hero p{color:rgba(255,255,255,.7);font-size:1.12rem;max-width:640px}
.crumbs{font-size:.85rem;color:rgba(255,255,255,.5)}
.crumbs a:hover{color:#fff}

/* marquee */
.marquee{background:var(--accent);color:#fff;overflow:hidden;white-space:nowrap;padding:16px 0;font-weight:700;letter-spacing:-.01em}
.marquee-track{display:inline-flex;gap:48px;animation:mq 32s linear infinite;padding-left:48px}
.marquee-track span{display:inline-flex;align-items:center;gap:48px;font-size:1.1rem}
.marquee-track span::after{content:"✦";opacity:.6}
@keyframes mq{to{transform:translateX(-50%)}}

/* sections */
section{padding:110px 0;position:relative}
.dark{background:var(--steel);color:#fff}
.dark .sec-head p,.dark .muted{color:rgba(255,255,255,.62)}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:56px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(2rem,4vw,3.3rem);line-height:1.04;letter-spacing:-.03em;max-width:720px;font-weight:800}
.sec-head p{max-width:430px;color:var(--muted)}
.sec-head .mono{color:var(--accent);display:block;margin-bottom:16px}
.muted{color:var(--muted)}

/* products */
.products{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.prod{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .4s var(--ease),box-shadow .4s}
.prod:hover{transform:translateY(-6px);box-shadow:0 30px 60px -30px rgba(0,0,0,.25)}
.prod-img{background:linear-gradient(160deg,#eceae5,#dedbd4);padding:34px 30px;aspect-ratio:16/8;display:grid;place-items:center}
.prod-body{padding:32px;display:flex;flex-direction:column;flex:1}
.prod-tag{display:inline-block;align-self:flex-start;background:var(--ink);color:#fff;padding:5px 12px;border-radius:999px;margin-bottom:14px}
.prod h3{font-size:1.7rem;letter-spacing:-.02em;margin-bottom:8px}
.prod p{color:var(--muted);margin-bottom:22px}
.spec{list-style:none;border-top:1px solid var(--line);margin-bottom:24px}
.spec li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.95rem}
.spec li span:first-child{color:var(--muted)}
.spec li span:last-child{font-weight:600;text-align:right}
.price{display:flex;align-items:baseline;gap:8px;margin-bottom:22px}
.price b{font-size:2.1rem;font-weight:800;letter-spacing:-.02em}
.price span{color:var(--muted)}
.prod-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}

/* 3D configurator */
.configurator{display:grid;grid-template-columns:1.35fr .65fr;gap:0;background:var(--steel-2);border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.07)}
.stage{position:relative;min-height:520px;background:radial-gradient(ellipse at 50% 40%,#3a444e,#161a1f 70%)}
#panel3d{position:absolute;inset:0;cursor:grab}
#panel3d:active{cursor:grabbing}
#panel3d.no3d{display:grid;place-items:center;color:rgba(255,255,255,.6);padding:20px;text-align:center}
.stage-hint{position:absolute;left:20px;bottom:18px;color:rgba(255,255,255,.55);display:flex;gap:8px;align-items:center;pointer-events:none}
.stage-top{position:absolute;left:20px;top:18px;right:20px;display:flex;gap:8px;flex-wrap:wrap;z-index:2}
.chip{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.15);padding:9px 15px;border-radius:999px;cursor:pointer;font-size:.88rem;transition:background .2s}
.chip:hover{background:rgba(255,255,255,.15)}
.chip.active{background:#fff;color:var(--ink);border-color:#fff}
.chip.accent-chip{background:var(--accent);border-color:var(--accent)}
.side{padding:30px;display:flex;flex-direction:column;gap:22px;color:#fff}
.side h3{font-size:1.35rem;letter-spacing:-.02em}
.label{display:flex;justify-content:space-between;gap:10px;color:rgba(255,255,255,.55);font-size:.88rem;margin-bottom:10px}
.label b{color:#fff;font-weight:600;text-align:right}
.swatches{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.sw{aspect-ratio:1;border-radius:9px;border:2px solid transparent;cursor:pointer;transition:transform .15s;background-size:cover}
.sw:hover{transform:scale(1.1)}
.sw.active{border-color:#fff;box-shadow:0 0 0 2px var(--accent)}
.light .sw.active{border-color:var(--ink)}
.side-note{font-size:.82rem;color:rgba(255,255,255,.45);margin-top:auto}

/* textures (печать) */
.tx-wood{background-image:repeating-linear-gradient(8deg,rgba(0,0,0,.18) 0 2px,transparent 2px 9px),repeating-linear-gradient(-4deg,rgba(255,255,255,.08) 0 1px,transparent 1px 14px)}
.tx-stone{background-image:radial-gradient(circle at 20% 30%,rgba(255,255,255,.18) 0 3px,transparent 4px),radial-gradient(circle at 70% 60%,rgba(0,0,0,.22) 0 4px,transparent 5px),radial-gradient(circle at 45% 80%,rgba(0,0,0,.15) 0 2px,transparent 3px);background-size:22px 22px,30px 30px,17px 17px}
.tx-brick{background-image:linear-gradient(rgba(230,220,210,.55) 2px,transparent 2px),linear-gradient(90deg,rgba(230,220,210,.55) 2px,transparent 2px);background-size:100% 12px,24px 24px}

/* cutaway */
.cutaway{height:260vh;background:var(--steel);color:#fff;padding:0}
.cut-sticky{position:sticky;top:0;height:100vh;display:flex;align-items:center;overflow:hidden}
.cut-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center;width:100%}
.cut-grid h2{font-size:clamp(2rem,4vw,3.3rem);line-height:1.04;letter-spacing:-.03em;font-weight:800;margin:16px 0 18px}
.cut-layers{list-style:none;margin-top:28px;display:grid;gap:14px}
.cut-layers li{display:grid;grid-template-columns:14px 1fr;gap:14px;opacity:.35;transition:opacity .4s}
.cut-layers li.on{opacity:1}
.cut-layers li i{width:14px;height:14px;border-radius:4px;margin-top:5px}
.cut-layers b{display:block}
.cut-layers span{color:rgba(255,255,255,.6);font-size:.93rem}
.cut-progress{height:3px;background:rgba(255,255,255,.1);border-radius:3px;margin-top:30px;overflow:hidden}
.cut-progress i{display:block;height:100%;width:0;background:var(--accent)}

/* building try-on */
.tryon{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:stretch}
.tryon-stage{position:relative;background:linear-gradient(180deg,#cfe0ea 0%,#eef3f5 62%,#d9d6cf 62%,#cbc7be 100%);border-radius:22px;overflow:hidden;border:1px solid var(--line);display:grid;place-items:center;min-height:560px}
.tryon-stage svg{width:100%;height:auto;padding:20px}
#building3d{position:absolute;inset:0;cursor:grab}
#building3d:active{cursor:grabbing}
#building3d canvas{opacity:0;transition:opacity .8s}
#building3d.ready canvas{opacity:1}
.tryon-stage .stage-hint{color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.5)}
.tryon-side{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:28px;display:flex;flex-direction:column;gap:24px}
.tryon-side .label{color:var(--muted)}
.tryon-side .label b{color:var(--ink)}
.tryon-side .swatches{grid-template-columns:repeat(8,1fr);gap:6px}
.side .label{flex-direction:column;gap:4px}
.side .label b{text-align:left}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.preset{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 12px 7px 7px;display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:.85rem}
.preset:hover{border-color:var(--ink)}
.preset i{width:18px;height:18px;border-radius:50%;display:inline-block;box-shadow:9px 0 0 0 var(--w)}
.preset i{margin-right:9px}

/* numbers */
.numbers{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.numbers div{padding:44px 24px 40px 0;border-right:1px solid var(--line)}
.numbers div:last-child{border-right:0}
.numbers b{display:block;font-size:clamp(2.4rem,5vw,4rem);font-weight:800;letter-spacing:-.04em;line-height:1}
.numbers b small{font-size:.45em;letter-spacing:0;margin-left:4px;color:var(--accent)}
.numbers span{color:var(--muted);display:block;margin-top:12px;max-width:220px}

/* compare */
.compare{width:100%;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.compare th,.compare td{padding:20px 24px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare tr:last-child td{border-bottom:0}
.compare th{font-size:.8rem;font-family:"JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:500;background:#faf9f7}
.compare th.us{background:var(--ink);color:#fff}
.compare td.us{background:#fdf3ee;font-weight:600}
.compare td.us::before{content:"✓ ";color:var(--accent);font-weight:800}
.compare td:first-child{color:var(--muted);width:24%}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r)}

/* why / applications */
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cards4.cards3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:transform .3s var(--ease),border-color .3s}
.card:hover{transform:translateY(-4px);border-color:#c8c5bd}
.card svg{width:42px;height:42px;margin-bottom:20px;color:var(--accent)}
.card h4{font-size:1.12rem;margin-bottom:8px;letter-spacing:-.01em}
.card p{color:var(--muted);font-size:.94rem}
.dark .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.08)}
.dark .card p{color:rgba(255,255,255,.6)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);counter-reset:s;border-top:2px solid var(--ink)}
.step{padding:30px 24px 0 0}
.step::before{counter-increment:s;content:"0" counter(s);font-family:"JetBrains Mono",monospace;color:var(--accent);font-size:.85rem;display:block;margin-bottom:14px}
.step h4{font-size:1.15rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.94rem}

/* wizard */
.order{background:var(--surface);border-top:1px solid var(--line)}
.order-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:start}
.wizard{background:var(--bg);border:1px solid var(--line);border-radius:22px;padding:34px}
.wz-progress{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:30px}
.wz-progress span{height:4px;border-radius:4px;background:var(--line);transition:background .3s}
.wz-progress span.on{background:var(--accent)}
.wz-step{display:none;animation:fadeUp .45s var(--ease)}
.wz-step.on{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.wz-step h3{font-size:1.45rem;letter-spacing:-.02em;margin-bottom:4px}
.wz-step > p{color:var(--muted);margin-bottom:22px}
.opts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.opt{position:relative;cursor:pointer}
.opt input{position:absolute;opacity:0}
.opt div{border:1.5px solid var(--line);background:#fff;border-radius:14px;padding:20px;height:100%;transition:border-color .2s,box-shadow .2s}
.opt b{display:block;margin-bottom:4px}
.opt small{color:var(--muted)}
.opt input:checked + div{border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,83,31,.15)}
.opt input:focus-visible + div{outline:2px solid var(--accent)}
.wz-nav{display:flex;justify-content:space-between;gap:12px;margin-top:28px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:.85rem;color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{font:inherit;padding:13px 15px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--ink);width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.result{background:var(--ink);color:#fff;border-radius:22px;padding:30px;position:sticky;top:100px}
.result h3{font-size:1.2rem;margin-bottom:18px}
.res-row{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:.95rem}
.res-row span{color:rgba(255,255,255,.6)}
.res-total{margin:22px 0 6px;font-size:2.4rem;font-weight:800;letter-spacing:-.03em;color:var(--accent);line-height:1}
.result small{color:rgba(255,255,255,.5);display:block;margin-bottom:22px}
.result .btn{width:100%}
.form-box{background:var(--bg);border:1px solid var(--line);border-radius:22px;padding:30px;margin-top:20px}
.form-box h3{font-size:1.2rem;margin-bottom:16px}
.form-note{font-size:.8rem;color:var(--muted);margin-top:12px}
.form-ok{display:none;padding:16px;border-radius:10px;background:#e7f4ea;color:#1e6b34;font-weight:600;margin-top:14px;font-size:.92rem}

/* docs */
.docs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.doc{display:flex;flex-direction:column;gap:14px;padding:24px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.doc svg{width:34px;height:34px;color:var(--accent)}
.doc b{font-size:1.02rem}
.doc span{color:var(--muted);font-size:.9rem;flex:1}
.doc a{font-weight:600;color:var(--accent)}
.doc a:hover{text-decoration:underline}

/* visit */
.visit{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:24px;overflow:hidden;background:var(--accent);color:#fff}
.visit-text{padding:56px}
.visit-text h2{font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.05;letter-spacing:-.03em;font-weight:800;margin:14px 0 16px}
.visit-text p{color:rgba(255,255,255,.85);margin-bottom:28px;max-width:440px}
.visit-text .btn{background:#fff;color:var(--ink)}
.visit-img{background:#2a1408 center/cover;min-height:340px;position:relative;display:grid;place-items:center}
.visit-img svg{width:80%;opacity:.95}

/* faq */
.faq{display:grid;gap:12px;max-width:900px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:0 24px;transition:border-color .2s}
.faq details[open]{border-color:var(--ink)}
.faq summary{cursor:pointer;list-style:none;padding:22px 0;font-weight:600;font-size:1.05rem;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.5rem;line-height:1;color:var(--accent);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 22px;color:var(--muted);max-width:760px}

/* delivery map */
.delivery{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.dmap{background:var(--steel);border-radius:22px;padding:20px;overflow:hidden}
.dmap svg{width:100%;height:auto}
.dmap .route{stroke:var(--accent);stroke-width:2;fill:none;stroke-dasharray:6 6;animation:dash 1.6s linear infinite}
@keyframes dash{to{stroke-dashoffset:-24}}
.dmap .city circle{fill:#fff}
.dmap .city text{fill:#fff;font-size:15px;font-family:Onest,sans-serif;font-weight:600}
.dmap .city.hq circle{fill:var(--accent)}
.dmap .city.hl text{fill:var(--accent)}
.city-list{list-style:none;border-top:1px solid var(--line)}
.city-list li{display:flex;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line);cursor:default;transition:background .2s,padding .2s}
.city-list li:hover{background:var(--surface);padding-left:12px}
.city-list li span{color:var(--muted)}

/* catalog */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{border:1px solid var(--line);background:var(--surface);padding:10px 18px;border-radius:999px;cursor:pointer}
.filters button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.catalog{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.cc{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s;text-align:left;padding:0}
.cc:hover{transform:translateY(-4px);box-shadow:0 20px 40px -24px rgba(0,0,0,.35)}
.cc .sw-big{aspect-ratio:4/3;position:relative}
.cc .sw-big::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.1) 0 3px,transparent 3px 22px,rgba(0,0,0,.14) 22px 25px,transparent 25px 40px)}
.cc div.t{padding:14px 16px}
.cc b{display:block;font-size:.98rem}
.cc span{font-size:.84rem;color:var(--muted)}
.cc em{font-style:normal;font-size:.7rem;font-family:"JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}

/* prose / spec table */
.spec-table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.spec-table td{padding:16px 22px;border-bottom:1px solid var(--line)}
.spec-table td:first-child{color:var(--muted);width:45%}
.spec-table td:last-child{font-weight:600}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.prose p{color:var(--muted);margin-bottom:16px;font-size:1.05rem}
.prose h3{font-size:1.5rem;letter-spacing:-.02em;margin:8px 0 14px}
.check{list-style:none;display:grid;gap:12px;margin:18px 0}
.check li{padding-left:30px;position:relative}
.check li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center/12px no-repeat}
.cta-band{background:var(--ink);color:#fff;border-radius:24px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-band h3{font-size:clamp(1.5rem,3vw,2.2rem);letter-spacing:-.02em;line-height:1.1;max-width:620px}
.cta-band p{color:rgba(255,255,255,.6);margin-top:8px}

/* contacts */
.contacts-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:stretch}
.contact-card{background:var(--steel);color:#fff;border-radius:22px;padding:38px;display:flex;flex-direction:column;gap:26px}
.contact-card .mono{color:rgba(255,255,255,.5);display:block;margin-bottom:6px}
.contact-card .val{font-size:1.25rem;font-weight:600}
.map{border-radius:22px;overflow:hidden;min-height:420px;border:1px solid var(--line);background:#ddd}
.map iframe{width:100%;height:100%;min-height:420px;border:0}

/* footer */
footer{background:#0f1215;color:rgba(255,255,255,.6);padding:70px 0 30px;font-size:.92rem}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;margin-bottom:50px}
.foot h5{color:#fff;font-size:.95rem;margin-bottom:16px}
.foot ul{list-style:none;display:grid;gap:10px}
.foot a:hover{color:#fff}
.foot .logo{color:#fff;margin-bottom:16px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.84rem}

/* floating whatsapp */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:70;width:60px;height:60px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 14px 30px -8px rgba(37,211,102,.6);transition:transform .2s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:32px;height:32px}
.wa-float::before{content:"";position:absolute;inset:0;border-radius:50%;background:#25d366;animation:ping 2.4s infinite;z-index:-1}
@keyframes ping{0%{transform:scale(1);opacity:.5}80%,100%{transform:scale(1.7);opacity:0}}

/* reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}

/* responsive */
@media (max-width:1080px){
  .menu{gap:18px;font-size:.88rem}
  .nav-cta{display:none}
}
@media (max-width:960px){
  .hero-grid,.products,.configurator,.order-grid,.contacts-grid,.tryon,.cut-grid,.delivery,.two,.visit{grid-template-columns:1fr}
  .cards4,.docs{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:30px}
  .numbers,.hero-stats{grid-template-columns:1fr 1fr}
  .numbers div:nth-child(2){border-right:0}
  .numbers div{border-bottom:1px solid var(--line)}
  .menu,.nav-phone{display:none}
  .burger{display:block}
  .nav.open .menu{display:flex;flex-direction:column;position:absolute;top:76px;left:0;right:0;background:var(--steel);padding:24px 20px;gap:20px;font-size:1.05rem}
  header{background:rgba(23,27,32,.94)}
  .stage{min-height:420px}
  .result{position:static}
  .foot{grid-template-columns:1fr 1fr}
  .cut-sticky{height:auto;min-height:100vh;padding:90px 0 40px}
  .cutaway{height:auto}
  .hero{min-height:auto;padding-top:130px}
  .visit-text{padding:36px}
}
@media (max-width:600px){
  section{padding:76px 0}
  .cards4,.cards4.cards3,.docs,.steps,.opts,.row2,.foot{grid-template-columns:1fr}
  .swatches{grid-template-columns:repeat(6,1fr)}
  .tryon-side .swatches{grid-template-columns:repeat(7,1fr)}
  .wizard,.tryon-side,.contact-card,.result,.form-box{padding:22px}
  .side{padding:22px}
  .stage{min-height:340px}
  .tryon-stage{min-height:380px}
  .cta-band{padding:30px}
  .compare th,.compare td{padding:14px}
  .wa-float{display:none}

  /* нижняя панель действий */
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .m-bar{display:grid}

  /* главный экран */
  .hero{padding-top:110px}
  .hero h1{font-size:2.35rem;margin:16px 0 16px}
  .hero p.lead{font-size:1.02rem}
  .hero-actions{margin-top:26px}
  .hero-actions .btn{width:100%}
  .badge{font-size:.66rem;white-space:normal}
  .hero-3d{aspect-ratio:1/.72;margin-top:6px}
  .hero-tags{margin-top:0}
  .hero-tags span{font-size:.78rem;padding:6px 11px}
  .hero-stats{margin-top:34px}
  .hero-stats div{padding:18px 12px 20px 0}
  .sec-head{margin-bottom:34px}
  .sec-head h2{font-size:1.9rem}

  /* карточки продукции */
  .prod-body{padding:22px}
  .prod h3{font-size:1.4rem}
  .prod-actions .btn{flex:1}
  .prod-img{padding:22px 16px}

  /* палитры: две строки с горизонтальной прокруткой */
  .swatches,.tryon-side .swatches{display:grid;grid-template-columns:none;grid-template-rows:repeat(2,42px);grid-auto-flow:column;grid-auto-columns:42px;gap:8px;overflow-x:auto;overscroll-behavior-x:contain;padding:3px 3px 8px;scrollbar-width:thin;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
  .swatches .sw{width:42px;height:42px;aspect-ratio:auto}
  .configurator>*,.tryon>*,.side>*,.tryon-side>*,.order-grid>*,.visit>*{min-width:0}
  .visit-text{padding:28px 22px}
  .visit-text .btn{width:100%;white-space:normal}

  /* 3D-сцены */
  .stage-top{left:12px;top:12px;right:12px}
  .chip{padding:8px 12px;font-size:.82rem}
  .stage-hint{display:none}
  .tryon-stage{min-height:340px}

  /* разрез: подписи дублирует список слева */
  #cLab{display:none}
  .cut-sticky{padding:70px 0 40px;min-height:0}
  .cut-grid{gap:10px}
  .cutaway .cut-progress,.cutaway .cut-hint{display:none}
  /* заголовок → картинка → список слоёв */
  .cut-grid>div{display:contents}
  #cutSvg{width:100%;max-width:420px;margin:6px auto 0;order:1}
  .cut-layers{order:2}
  .cut-grid h2{font-size:1.9rem}
  .cut-layers{counter-reset:cl;margin-top:18px}
  .cut-layers li{opacity:1;grid-template-columns:30px 1fr}
  .cut-layers li i{counter-increment:cl;width:28px;height:28px;border-radius:50%;margin-top:0;display:grid;place-items:center;background:#fff!important;color:var(--ink);font-style:normal;font-weight:800;font-size:.9rem}
  .cut-layers li i::before{content:counter(cl)}

  /* сравнение — карточками */
  .table-scroll{overflow:visible}
  .compare,.compare tbody,.compare tr,.compare td{display:block;width:100%}
  .compare{background:none;border:0}
  .compare thead{display:none}
  .compare tr{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
  .compare td{border:0;padding:10px 16px}
  .compare td:first-child{width:100%;font-weight:700;color:var(--ink);padding-top:16px;font-size:1.02rem}
  .compare td.us{margin:0 10px;border-radius:10px;padding:12px 14px}
  .compare td:nth-child(3){color:var(--muted);padding-bottom:16px;font-size:.92rem}
  .compare td:nth-child(3)::before{content:"Обычно: ";font-weight:600}

  /* калькулятор */
  .opts{gap:8px}
  .opt div{padding:14px 16px;display:flex;justify-content:space-between;align-items:center;gap:10px}
  .opt b{margin:0}
  .wz-nav .btn{flex:1}
  .res-total{font-size:2rem}

  .visit-img{min-height:180px}
  .visit-img svg{width:60%}
  .dmap .city text{font-size:21px}
  .numbers div{padding:28px 14px 26px 0}
  .numbers b{font-size:2.3rem}
  .contact-card .val{font-size:1.08rem}
  .map,.map iframe{min-height:300px}
  .faq summary{font-size:.98rem;padding:18px 0}
  .faq details{padding:0 18px}
  .cta-band .btn{width:100%}
  .page-hero{padding:120px 0 56px}
  .spec-table td{padding:13px 14px;font-size:.92rem}
}

/* нижняя панель действий (телефоны) */
@media (min-width:601px){.m-bar{display:none!important}}
.m-bar{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:70;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:rgba(23,27,32,.96);backdrop-filter:blur(10px);border-top:1px solid rgba(255,255,255,.08)}
.m-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:48px;border-radius:12px;color:#fff;font-size:.74rem;font-weight:600;background:rgba(255,255,255,.07)}
.m-bar a svg{width:20px;height:20px}
.m-bar .m-wa{background:#25d366}
.m-bar .m-calc{background:var(--accent)}

/* кнопка «вращать» для 3D на сенсорных экранах */
.rot-toggle{position:absolute;right:12px;bottom:12px;z-index:3;display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.25);background:rgba(0,0,0,.45);color:#fff;font-size:.82rem;font-weight:600;backdrop-filter:blur(6px);cursor:pointer}
.rot-toggle.on{background:var(--accent);border-color:var(--accent)}
.rot-toggle svg{width:16px;height:16px}

/* бургер → крестик */
.nav.open .burger path{d:path("M6 6l12 12M18 6L6 18")}
@media (prefers-reduced-motion:reduce){
  *,*::before{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}