:root{
  --tint:#f26a00; --tint2:#d95400; --og:linear-gradient(135deg,#ff8a00,#f05202);
  --ink:#121417; --ink2:#1b1e22; --ink3:#262a30; --label:#16181b; --label2:#5b6068; --line:#e3e5e8; --soft:#f5f6f7;
  --r:6px; --max:1220px;
  --font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:#fff;color:var(--label);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.15;color:var(--ink)}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.muted{color:var(--label2)}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.util{background:#0b0c0e;color:#9aa0a8;font-size:13px}
.util .wrap{display:flex;justify-content:space-between;gap:16px;height:36px;align-items:center}
.util a{color:#fff;text-decoration:none;font-weight:600}
.util .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#2fbf5b;margin-right:7px;vertical-align:1px}
.top{position:sticky;top:0;z-index:50;background:rgba(18,20,23,.97);backdrop-filter:blur(10px);border-bottom:1px solid #000}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:22px}
.top .logo img{height:44px;width:auto}
.nav{display:flex;gap:2px;list-style:none;margin-left:auto}
.nav a{display:block;padding:27px 12px;color:#c4c8ce;text-decoration:none;font-weight:500;font-size:14.5px;border-bottom:2px solid transparent}
.nav a:hover{color:#fff}
.nav a.on{color:#fff;border-bottom-color:var(--tint)}
.cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--tint);color:#fff;text-decoration:none;padding:13px 22px;border:1px solid var(--tint);border-radius:var(--r);cursor:pointer;font:600 14.5px var(--font);transition:background .2s,border-color .2s,transform .1s;white-space:nowrap}
.cta:hover{background:var(--tint2);border-color:var(--tint2)}
.cta:active{transform:translateY(1px)}
.cta.ghost{background:transparent;color:var(--ink);border-color:#c9cdd2}
.cta.ghost:hover{border-color:var(--ink)}
.dark .cta.ghost,.hero .cta.ghost,.top .cta.ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.dark .cta.ghost:hover,.hero .cta.ghost:hover{border-color:#fff}
.cta.sm{padding:9px 14px;font-size:13.5px}
.cta.wa{background:#1f9d55;border-color:#1f9d55}.cta.wa:hover{background:#178246;border-color:#178246}
.devizbtn{position:relative}
.devizbtn b{position:absolute;top:-8px;right:-8px;background:#fff;color:var(--tint2);border-radius:10px;font-size:11px;min-width:20px;height:20px;display:grid;place-items:center;padding:0 5px;box-shadow:0 2px 6px rgba(0,0,0,.25)}
.burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;align-items:center}
.burger span{display:block;width:24px;height:2px;background:#fff}
@media (max-width:1080px){
  .util .hide-m{display:none}
  .util .wrap{justify-content:center}
  .nav{display:none;position:absolute;top:76px;left:0;right:0;background:var(--ink);flex-direction:column;padding:6px 28px 18px;border-bottom:3px solid var(--tint)}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid #23272c}
  .nav a.on{color:var(--tint);border-bottom-color:#23272c}
  .burger{display:flex}
  .top .hdr-cta{display:none}
}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  url(img/tx/topo-orange.svg) right -260px top -40px/1000px auto no-repeat,
  linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px) 0 0/72px 72px,
  linear-gradient(0deg,rgba(255,255,255,.025) 1px,transparent 1px) 0 0/72px 72px,
  url(img/tx/concrete-dark.svg)}
.hero::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:4px;background:var(--og)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:84px;padding-bottom:92px}
.kicker{display:inline-flex;align-items:center;gap:12px;color:#ff9a3c;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:12px;margin-bottom:20px}
.kicker::before{content:"";width:28px;height:2px;background:var(--tint)}
.hero h1{font-size:clamp(32px,4.3vw,54px);color:#fff;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:#ff9a3c}
.hero p.lead{color:#b4b9c0;font-size:18px;margin:22px 0 30px;max-width:560px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-v{position:relative}
.hero-v img{border-radius:8px;box-shadow:0 40px 80px rgba(0,0,0,.45)}
.hero-badge{position:absolute;left:-28px;bottom:-26px;background:#fff;color:var(--ink);border-radius:8px;padding:16px 20px;box-shadow:0 20px 40px rgba(0,0,0,.3);border-left:4px solid var(--tint)}
.hero-badge small{display:block;color:var(--label2);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.hero-badge b{font-size:22px}
.hero-facts{display:flex;gap:28px;margin-top:38px;flex-wrap:wrap}
.hero-facts div{border-left:2px solid var(--tint);padding-left:14px}
.hero-facts b{display:block;font-size:20px;color:#fff}
.hero-facts span{font-size:13.5px;color:#9aa0a8}
@media (max-width:980px){.hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:56px;padding-bottom:72px}.hero-badge{left:12px}}

/* page header */
.pagehead{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.pagehead::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:3px;background:var(--og)}
.pagehead::before{content:"";position:absolute;inset:0;background:url(img/tx/topo-orange.svg) right -160px center/900px auto no-repeat,linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px) 0 0/72px 72px,linear-gradient(0deg,rgba(255,255,255,.025) 1px,transparent 1px) 0 0/72px 72px,url(img/tx/concrete-dark.svg)}
.pagehead .wrap{position:relative;padding-top:58px;padding-bottom:58px}
.pagehead h1{font-size:clamp(30px,4vw,46px);color:#fff}
.pagehead p{color:#b4b9c0;max-width:700px;margin-top:14px;font-size:18px}
.crumbs{font-size:12.5px;color:#8d939b;margin-bottom:14px;letter-spacing:.08em;text-transform:uppercase}
.crumbs a{color:#ff9a3c;text-decoration:none}

/* ---------- sections ---------- */
section{padding:84px 0}
section.alt{background:var(--soft) url(img/tx/concrete-light.svg)}
section.stone{background:#f6f6f5 url(img/tx/stone.svg) center/700px}
section.wood{background:#f7f2ea url(img/tx/wood.svg) center/600px}
section.topo{background:#fff url(img/tx/topo-dark.svg) left -200px bottom -120px/900px auto no-repeat}
section.dark{background:var(--ink) url(img/tx/concrete-dark.svg);color:#e6e8eb;position:relative}
section.dark.topo{background:url(img/tx/topo-orange.svg) right -200px top -100px/900px auto no-repeat,var(--ink) url(img/tx/concrete-dark.svg)}
section.dark h2,section.dark h3{color:#fff}
.sh{margin-bottom:40px;max-width:760px}
.sh .bar{display:block;width:40px;height:3px;background:var(--tint);margin-bottom:16px}
.sh h2{font-size:clamp(26px,3.2vw,38px)}
.sh p{color:var(--label2);margin-top:12px;font-size:17px}
section.dark .sh p{color:#9aa0a8}
.sh-row{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.sh-row .sh{margin-bottom:0}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(420px,100%),1fr));gap:40px}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(250px,100%),1fr))}

/* service cards */
.svc{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s}
.svc:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.08);border-color:#d3d6da}
.svc .im{aspect-ratio:3/2;overflow:hidden;background:#eee}
.svc .im img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.svc:hover .im img{transform:scale(1.04)}
.svc .bd{padding:22px 22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.svc h3{font-size:18.5px}
.svc p{color:var(--label2);font-size:14.5px;flex:1}
.svc .from{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line);padding-top:14px;margin-top:6px}
.svc .from span{font-size:12.5px;color:var(--label2);text-transform:uppercase;letter-spacing:.06em}
.svc .from b{color:var(--tint2);font-size:17px}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
.card h3{font-size:18px;margin:16px 0 6px}
.card p{color:var(--label2);font-size:15px}
.ico{width:46px;height:46px;display:grid;place-items:center;background:#fff4ea;color:var(--tint);border-radius:var(--r)}
.ico svg{width:23px;height:23px}
section.dark .card{background:var(--ink2);border-color:#2a2e34}
section.dark .card p{color:#9aa0a8}
section.dark .ico{background:#2a2016}

.stat{border-top:2px solid var(--tint);padding-top:18px}
.stat b{display:block;font-size:19px;color:#fff;margin-bottom:6px;font-weight:600}
.stat span{color:#9aa0a8;font-size:15px}

.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.step{padding:28px 24px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font-size:13px;font-weight:700;color:var(--tint);letter-spacing:.1em;margin-bottom:12px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--label2);font-size:14.5px}
@media (max-width:900px){.step{border-right:0;border-bottom:1px solid var(--line)}}

.band{background:url(img/tx/topo-white.svg) right -100px center/900px auto no-repeat,var(--og);color:#fff;padding:56px 0}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.band h2{font-size:clamp(22px,2.8vw,30px);color:#fff}
.band p{opacity:.92;margin-top:6px}
.band .cta{background:var(--ink);border-color:var(--ink)}
.band .cta.ghost{background:transparent;border-color:rgba(255,255,255,.6)}
.note{background:#fff8f1;border-left:3px solid var(--tint);color:#6b3700;padding:14px 18px;font-size:14.5px;border-radius:0 var(--r) var(--r) 0}

/* calculator */
.calc{display:grid;grid-template-columns:1.2fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.calc .in{padding:32px;display:grid;gap:16px}
.calc .out{background:var(--ink);color:#fff;padding:32px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.calc .out small{color:#9aa0a8;font-size:13px;text-transform:uppercase;letter-spacing:.08em}
.calc .out .big{font-size:clamp(32px,4vw,44px);font-weight:700;letter-spacing:-.02em}
.calc .out .sub{color:#b4b9c0;font-size:14.5px}
@media (max-width:860px){.calc{grid-template-columns:1fr}}

/* forms */
.form{display:grid;gap:14px}
label.f{font-weight:600;font-size:13px;display:grid;gap:7px;color:var(--ink)}
.form input,.form select,.form textarea,.fld{font:15px var(--font);padding:12px 14px;border:1px solid #cfd3d8;border-radius:var(--r);background:#fff;color:var(--label);width:100%}
.form input:focus,.form select:focus,.form textarea:focus,.fld:focus{outline:0;border-color:var(--tint);box-shadow:0 0 0 3px rgba(242,106,0,.15)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}

/* catalog */
.cat-layout{display:grid;grid-template-columns:1fr 360px;gap:32px;align-items:start}
@media (max-width:1080px){.cat-layout{grid-template-columns:1fr}}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.toolbar .fld{max-width:360px}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:22px}
.chip{border:1px solid #d4d7db;background:#fff;padding:7px 13px;border-radius:20px;cursor:pointer;font:500 13.5px var(--font);color:var(--label)}
.chip:hover{border-color:var(--ink)}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.cgroup{margin-bottom:34px}
.cgroup h3{font-size:19px;margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid var(--ink);display:flex;justify-content:space-between;align-items:baseline}
.cgroup h3 small{font-size:13px;color:var(--label2);font-weight:500}
.item{display:grid;grid-template-columns:1fr auto;gap:8px 20px;padding:14px 0;border-bottom:1px solid var(--line);align-items:center}
.item .code{font-size:12px;color:var(--label2);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.item h4{font-size:16px;font-weight:600;margin:2px 0}
.item p{font-size:14px;color:var(--label2)}
.item .pr{text-align:right;white-space:nowrap}
.item .pr b{display:block;color:var(--tint2);font-size:18px}
.item .pr s{display:block;color:#9aa0a8;font-size:12px}
.item .pr b small{font-size:13px;color:var(--label2);font-weight:500}
.item .pr span{font-size:12.5px;color:var(--label2)}
.item .act{grid-column:1/-1;display:flex;gap:8px;align-items:center}
.item .act input{width:110px;padding:8px 10px}
.qtyhint{font-size:13px;color:var(--label2)}
.deviz{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.deviz .h{background:var(--ink);color:#fff;padding:16px 20px;border-bottom:3px solid var(--tint)}
.deviz .h b{font-size:16px}
.deviz .list{max-height:340px;overflow:auto}
.deviz .ln{display:grid;grid-template-columns:1fr auto auto;gap:8px;padding:12px 20px;border-bottom:1px solid var(--line);font-size:14px;align-items:center}
.deviz .ln small{display:block;color:var(--label2);font-size:12px}
.deviz .ln button{border:0;background:none;color:#a0a5ab;font-size:18px;cursor:pointer}
.deviz .empty{padding:22px 20px;color:var(--label2);font-size:14px}
.deviz .tot{padding:16px 20px;background:var(--soft);display:grid;gap:4px}
.deviz .tot div{display:flex;justify-content:space-between;font-size:14.5px}
.deviz .tot .g{font-size:18px;font-weight:700;color:var(--ink)}
.deviz .acts{padding:16px 20px;display:grid;gap:8px}
.deviz .fine{font-size:12px;color:var(--label2);padding:0 20px 16px}

/* table */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);font-size:14.5px}
.tbl th{background:var(--soft);text-align:left;padding:12px 16px;font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--label2);border-bottom:1px solid var(--line)}
.tbl td{padding:12px 16px;border-bottom:1px solid var(--line)}
.tbl tr.grp td{background:var(--ink);color:#fff;font-weight:600;font-size:13px;letter-spacing:.04em;text-transform:uppercase}
.tbl td.c{color:var(--label2);font-size:13px;font-variant-numeric:tabular-nums}
.tbl td.r,.tbl th.r{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.tbl td.p{font-weight:700;color:var(--tint2)}
.tbl td.m{color:#8d939b;text-decoration:line-through}
.tbl tbody tr:not(.grp):hover td{background:#fffaf5}
.tblwrap{overflow-x:auto;border-radius:var(--r)}

/* portfolio */
.pf{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(340px,100%),1fr));gap:22px}
.pf figure{position:relative;border-radius:var(--r);overflow:hidden;cursor:zoom-in;background:#ddd;aspect-ratio:3/2}
.pf img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.pf figure:hover img{transform:scale(1.05)}
.pf figcaption{position:absolute;inset:auto 0 0 0;padding:44px 20px 18px;background:linear-gradient(transparent,rgba(10,11,13,.88));color:#fff}
.pf figcaption small{color:#ff9a3c;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:600}
.pf figcaption b{display:block;font-size:17px;margin-top:2px}
.lb{position:fixed;inset:0;background:rgba(8,9,11,.92);z-index:200;display:none;align-items:center;justify-content:center;padding:30px;flex-direction:column;gap:16px}
.lb.open{display:flex}
.lb img{max-height:78vh;border-radius:6px}
.lb p{color:#cfd3d8;max-width:760px;text-align:center}
.lb button{position:absolute;top:18px;right:22px;background:none;border:0;color:#fff;font-size:34px;cursor:pointer}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";color:var(--tint);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--label2);margin-top:10px;max-width:820px}

.info{display:grid;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.info>div{display:flex;gap:16px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}
.info>div:last-child{border-bottom:0}
.info b{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--label2);font-weight:600}
.info span,.info a{font-size:16px;font-weight:600;text-decoration:none}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:12px 18px;border-radius:var(--r);font-size:14px;opacity:0;transition:.25s;z-index:300;border-left:3px solid var(--tint);pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%)}

/* footer */
footer{background:#0b0c0e url(img/tx/concrete-dark.svg);color:#8d939b;padding:64px 0 26px;font-size:14.5px}
footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
footer img{height:52px;width:auto;margin-bottom:18px}
footer h4{color:#fff;font-weight:600;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
footer a{text-decoration:none;color:#8d939b;display:block;padding:4px 0}
footer a:hover{color:#fff}
footer .legal{border-top:1px solid #1f2328;margin-top:44px;padding-top:20px;font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media (max-width:860px){footer .cols{grid-template-columns:1fr 1fr}}
@media (max-width:520px){footer .cols{grid-template-columns:1fr}}

/* chat */
.chat-btn{position:fixed;right:24px;bottom:24px;z-index:90;height:54px;padding:0 20px 0 16px;border-radius:28px;border:0;background:var(--ink);color:#fff;cursor:pointer;box-shadow:0 12px 30px rgba(0,0,0,.28);display:flex;align-items:center;gap:10px;font:600 14.5px var(--font)}
.chat-btn svg{width:22px;height:22px;color:var(--tint)}
.chat-btn .dot{position:absolute;top:2px;right:6px;width:12px;height:12px;border-radius:50%;background:#2fbf5b;border:2px solid #fff}
.chat{position:fixed;right:24px;bottom:92px;z-index:91;width:min(400px,calc(100vw - 24px));height:min(610px,calc(100vh - 130px));background:#fff;border-radius:10px;box-shadow:0 30px 70px rgba(0,0,0,.25);display:none;flex-direction:column;overflow:hidden}
.chat.open{display:flex}
.chat-h{background:var(--ink);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:12px;border-bottom:3px solid var(--tint)}
.chat-h img{height:26px;width:auto}
.chat-h b{display:block;font-size:14.5px;font-weight:600}
.chat-h small{color:#7fd69a;font-size:12px}
.chat-h button{margin-left:auto;background:none;border:0;color:#9aa0a8;font-size:22px;cursor:pointer}
.chat-m{flex:1;overflow-y:auto;padding:18px 16px;background:var(--soft);display:flex;flex-direction:column;gap:10px}
.msg{max-width:86%;padding:11px 14px;border-radius:10px;font-size:14.5px;line-height:1.55;white-space:pre-wrap;word-wrap:break-word}
.msg.bot{background:#fff;border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:3px}
.msg.me{background:var(--ink);color:#fff;align-self:flex-end;border-bottom-right-radius:3px}
.msg.err{background:#fff1f0;border-color:#f3c1bb;color:#8a2a1f}
.quick{display:flex;flex-wrap:wrap;gap:6px;padding:0 16px 12px;background:var(--soft)}
.quick button{border:1px solid #cfd3d8;background:#fff;color:var(--ink);border-radius:16px;padding:7px 12px;font:500 13px var(--font);cursor:pointer}
.quick button:hover{border-color:var(--tint);color:var(--tint2)}
.chat-f{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}
.chat-f input{flex:1;font:15px var(--font);padding:11px 14px;border:1px solid #cfd3d8;border-radius:22px}
.chat-f input:focus{outline:0;border-color:var(--tint)}
.chat-f button{border:0;background:var(--tint);color:#fff;width:44px;height:44px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.chat-f button:disabled{opacity:.5}
.typing{display:inline-flex;gap:4px}
.typing i{width:7px;height:7px;border-radius:50%;background:#9aa0a8;animation:b 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.3}40%{opacity:1}}
@media (max-width:560px){
  .chat-btn{right:14px;bottom:14px;padding:0 16px}
  .chat-btn .lbl{display:none}
  .chat{left:0;right:0;bottom:0;width:100%;height:calc(100vh - 20px);border-radius:12px 12px 0 0;z-index:120}
}

/* calculator v2 */
.calc2{display:grid;grid-template-columns:1.35fr 1fr;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:0 20px 50px rgba(0,0,0,.06)}
.cin{padding:28px 30px}
.ctabs{display:inline-flex;background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:3px;margin-bottom:22px}
.ctabs button{border:0;background:none;padding:9px 16px;border-radius:6px;font:600 14px var(--font);color:var(--label2);cursor:pointer}
.ctabs button.on{background:var(--ink);color:#fff}
.cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:640px){.cgrid{grid-template-columns:1fr 1fr}}
.surf{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden;margin:20px 0}
.surf div{background:#fff url(img/tx/topo-dark.svg) center/400px;padding:12px 14px}
.surf b{display:block;font-size:20px;color:var(--ink)}
.surf span{font-size:12px;color:var(--label2)}
@media (max-width:640px){.surf{grid-template-columns:1fr 1fr}}
.works{display:grid;grid-template-columns:1fr 1fr;gap:6px 22px}
@media (max-width:640px){.works{grid-template-columns:1fr}}
.works fieldset{border:0;padding:0;margin:0 0 10px}
.works legend{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--tint2);margin-bottom:6px}
.wk{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px;cursor:pointer}
.wk input{width:17px;height:17px;accent-color:var(--tint)}
.wk em{font-style:normal;color:var(--label2);font-size:12.5px;white-space:nowrap}
.cout{background:url(img/tx/topo-orange.svg) right -200px top -60px/700px auto no-repeat,var(--ink) url(img/tx/concrete-dark.svg);color:#fff;padding:28px 30px;display:flex;flex-direction:column;gap:12px}
.cout small{color:#9aa0a8;font-size:12.5px;text-transform:uppercase;letter-spacing:.08em}
.cout .big{font-size:clamp(32px,4vw,44px);font-weight:700;letter-spacing:-.02em}
.clines{display:grid;gap:0;max-height:300px;overflow:auto;margin-bottom:8px}
.clines div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #2a2e34;font-size:14px}
.clines small{display:block;color:#8d939b;font-size:12px}
.cfine{font-size:12px;color:#8d939b}
@media (max-width:980px){.calc2{grid-template-columns:1fr}}
/* guides */
.guide{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.guide .gh{padding:26px 26px 0}
.guide .num{font-size:12px;font-weight:700;color:var(--tint);letter-spacing:.1em}
.guide h3{font-size:20px;margin:8px 0 10px}
.guide .gb{padding:0 26px 26px;color:var(--label2);font-size:15px}
.guide ol,.guide ul{margin:12px 0 0 20px;display:grid;gap:6px}
.guide li::marker{color:var(--tint);font-weight:700}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(200px,100%),1fr));gap:1px;background:#2a2e34;border:1px solid #2a2e34;border-radius:var(--r);overflow:hidden}
.kpis div{background:var(--ink2);padding:26px 24px}
.kpis b{display:block;font-size:34px;color:#fff;letter-spacing:-.02em}
.kpis span{color:#9aa0a8;font-size:14px}

.fineprint{font-size:11.5px;color:#8d939b;margin-top:14px;line-height:1.55;max-width:900px}
section.dark .fineprint{color:#6b7078}
.clines small{text-transform:none;letter-spacing:0}
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.pillars div{background:#fff;padding:20px}
.pillars b{display:block;font-size:15px;color:var(--ink);margin-bottom:6px}
.pillars span{font-size:14px;color:var(--label2)}
@media (max-width:560px){.pillars{grid-template-columns:1fr}}
.hero h1{max-width:620px}
@media (max-width:560px){.hero p.lead{font-size:16.5px}.hero-facts{gap:18px}}

.waico{width:19px;height:19px;flex-shrink:0}
.cta.wa{background:#25D366;border-color:#25D366;color:#fff}
.cta.wa:hover{background:#1ebe5b;border-color:#1ebe5b}
.nav a{padding-left:11px;padding-right:11px}

/* WhatsApp modal */
.wam{position:fixed;inset:0;background:rgba(8,9,11,.65);z-index:400;display:flex;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(3px)}
.wam[hidden]{display:none}
.wam-box{position:relative;background:#fff;border-radius:10px;width:min(560px,100%);max-height:calc(100vh - 32px);overflow:auto;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.35);border-top:4px solid #25D366}
.wam-box h3{display:flex;align-items:center;gap:10px;font-size:20px}
.wam-box h3 .waico{color:#25D366;width:24px;height:24px}
.wam-x{position:absolute;top:12px;right:14px;border:0;background:none;font-size:26px;color:#8d939b;cursor:pointer}
.wam .form input,.wam textarea{font:15px var(--font);padding:11px 13px;border:1px solid #cfd3d8;border-radius:6px;width:100%}
.wam .form input:focus,.wam textarea:focus{outline:0;border-color:#25D366;box-shadow:0 0 0 3px rgba(37,211,102,.18)}
.wam-proj{background:var(--soft);border:1px solid var(--line);border-left:3px solid var(--tint);border-radius:6px;padding:12px 14px;margin-bottom:14px}
.wam-proj b{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--label2)}
.wam-proj pre,.wam-prev pre{white-space:pre-wrap;font:13.5px/1.55 var(--font);margin-top:6px;color:var(--label);max-height:180px;overflow:auto}
.wam-prev{font-size:13px;color:var(--label2)}
.wam-prev summary{cursor:pointer}
.wam-prev pre{background:#e7f8ee;border-radius:8px;padding:12px;margin-top:8px}
.wam-err{color:#b3261e;font-size:13.5px;min-height:1px}
.wam .cta.wa{width:100%;padding:14px}
.chat-wa{display:flex;align-items:center;gap:10px;border:0;border-top:1px solid var(--line);background:#effaf3;color:#155d34;padding:10px 16px;font:13px var(--font);text-align:left;cursor:pointer}
.chat-wa .waico{color:#25D366;width:22px;height:22px}
.chat-wa:hover{background:#e2f6ea}

/* social + cart */
.utr{display:inline-flex;align-items:center;gap:6px}
.soc{display:inline-flex;gap:4px;margin-left:10px}
.soc a{width:26px;height:26px;display:grid;place-items:center;border-radius:6px;color:#c4c8ce;padding:0 !important}
.soc a:hover{color:#fff;background:#23272c}
.soc svg{width:16px;height:16px}
.soc-f{margin:0 0 10px}
.soc-f a{width:36px;height:36px;border:1px solid #23272c}
.soc-f svg{width:18px;height:18px}
.cartbtn{position:relative;background:none;border:1px solid rgba(255,255,255,.18);color:#fff;width:44px;height:40px;border-radius:6px;cursor:pointer;display:grid;place-items:center;margin-left:4px}
.cartbtn:hover{border-color:var(--tint)}
.cartbtn svg{width:22px;height:22px}
.cartbtn b{position:absolute;top:-8px;right:-8px;background:var(--tint);color:#fff;border-radius:10px;font-size:11px;min-width:20px;height:20px;display:grid;place-items:center;padding:0 5px}
@media (max-width:1080px){.cartbtn{margin-left:auto}}
.cartov{position:fixed;inset:0;background:rgba(8,9,11,.5);z-index:150}
.cartov[hidden]{display:none}
.cartdr{position:fixed;top:0;right:0;bottom:0;width:min(420px,100vw);background:#fff;z-index:160;transform:translateX(105%);transition:transform .3s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;box-shadow:-20px 0 60px rgba(0,0,0,.25)}
.cartdr.open{transform:none}
.cd-h{display:flex;justify-content:space-between;align-items:center;padding:20px 22px;background:var(--ink) url(img/tx/concrete-dark.svg);color:#fff;border-bottom:3px solid var(--tint)}
.cd-h b{font-size:18px;display:block}
.cd-h small{color:#9aa0a8;font-size:13px}
.cd-h button{background:none;border:0;color:#9aa0a8;font-size:28px;cursor:pointer}
.cd-list{flex:1;overflow:auto;padding:6px 22px}
.cd-it{display:grid;grid-template-columns:1fr auto;gap:8px 12px;padding:16px 0;border-bottom:1px solid var(--line);position:relative}
.cd-it .code{font-size:11.5px;color:var(--label2);letter-spacing:.03em}
.cd-it b{display:block;font-size:15px;font-weight:600;margin-top:2px;padding-right:22px}
.cd-q{grid-column:1/-1;display:flex;align-items:center;gap:6px}
.cd-q button{width:32px;height:32px;border:1px solid #cfd3d8;background:#fff;border-radius:6px;font-size:18px;cursor:pointer}
.cd-q input{width:76px;padding:6px 8px;border:1px solid #cfd3d8;border-radius:6px;font:15px var(--font);text-align:center}
.cd-q span{font-size:13px;color:var(--label2)}
.cd-rm{position:absolute;top:12px;right:0;background:none;border:0;color:#a0a5ab;font-size:20px;cursor:pointer}
.cd-rm:hover{color:#b3261e}
.cd-empty{text-align:center;padding:50px 10px;color:var(--label2);display:grid;justify-items:center;gap:8px}
.cd-empty svg{width:46px;height:46px;color:#c9cdd2}
.cd-empty p{font-weight:600;color:var(--ink);font-size:16px}
.cd-empty .cta{margin-top:10px}
.cd-f{padding:16px 22px 22px;border-top:1px solid var(--line);display:grid;gap:10px;background:var(--soft)}
.cd-f .cta.wa{width:100%;padding:14px}
.cd-f .cta:disabled{opacity:.45;cursor:not-allowed}
.cd-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.cd-fine{font-size:12px;color:var(--label2);text-align:center}
.toast{display:flex;align-items:center;gap:14px;pointer-events:auto}
.toast button{background:var(--tint);border:0;color:#fff;font:600 13px var(--font);padding:6px 10px;border-radius:5px;cursor:pointer}
.wam select{font:15px var(--font);padding:11px 13px;border:1px solid #cfd3d8;border-radius:6px;width:100%;background:#fff}
.socrow{justify-content:space-between}.socrow .soc-f{margin:0}.socrow .soc-f a{border-color:var(--line);color:var(--ink)}.socrow .soc-f a:hover{background:var(--soft);color:var(--tint)}
#mailrow[hidden]{display:none}
/* floating WhatsApp button (replaces the chatbot): opens the contact form modal */
.wa-fab{position:fixed;right:24px;bottom:24px;z-index:90;height:54px;padding:0 20px 0 16px;border-radius:28px;border:0;background:#25D366;color:#fff;cursor:pointer;box-shadow:0 12px 30px rgba(0,0,0,.25);display:flex;align-items:center;gap:10px;font:600 14.5px var(--font)}
.wa-fab:hover{background:#1ebe5b}
.wa-fab .waico{width:24px;height:24px;margin:0;color:#fff}
@media(max-width:700px){.wa-fab{right:14px;bottom:14px;width:56px;padding:0;justify-content:center}.wa-fab span{display:none}}
.deviz .ln{grid-template-columns:1fr auto auto}
.cta:disabled{opacity:.5;cursor:not-allowed}
/* calculator on narrow screens: total + WhatsApp pinned to the bottom while scrolling the list */
@media (max-width:1080px){
  .deviz{position:sticky;top:auto;bottom:0;z-index:60;border-radius:0;margin:0 -16px;box-shadow:0 -8px 24px rgba(0,0,0,.12)}
  .deviz .h,.deviz .list,.deviz .fine,#dclr{display:none}
  .deviz .tot{padding:10px 16px}.deviz .acts{padding:0 16px 12px}
  body[data-page="calculator.html"] .wa-fab{display:none}
}
/* home: H1 carries the location (small orange line), the slogan keeps the big headline look */
.hero h1.kicker{font-size:12px;color:#ff9a3c;letter-spacing:.14em;font-weight:600;line-height:1.4}
.hero .slogan{font-size:clamp(32px,4.3vw,54px);color:#fff;letter-spacing:-.03em;font-weight:700;line-height:1.15}
.hero .slogan em{font-style:normal;color:#ff9a3c}
/* calculator stages open/close on click */
details.cgroup{margin-bottom:0;border-bottom:1px solid var(--line)}
details.cgroup summary{list-style:none;cursor:pointer;padding:16px 0}
details.cgroup summary::-webkit-details-marker{display:none}
details.cgroup summary h3{margin:0;padding:0;border:0;align-items:center}
details.cgroup summary h3::after{content:"+";margin-left:12px;font-size:24px;line-height:1;color:var(--tint)}
details.cgroup[open] summary h3::after{content:"–"}
details.cgroup summary h3 small{margin-left:auto}
details.cgroup[open]{padding-bottom:12px}
/* two-photo collage in a service card */
.svc .im.duo{display:grid;grid-template-columns:1fr 1fr;gap:3px}
.svc .im.duo img{min-width:0}