/* Layout: инженерная схема — цветовая маркировка витой пары (оранж/зел/син/корич) как система меток разделов */
:root{
  --bg:#f3f5f7; --surface:#ffffff; --ink:#14202b; --muted:#566573; --line:#d9dfe5;
  --accent:#e8670c; --accent-ink:#ffffff; --band:#14202b; --band-ink:#eef2f5;
  --p-orange:#e8670c; --p-green:#2f9a5a; --p-blue:#2a6fd6; --p-brown:#8a5a36;
  --f-display:"Unbounded","Golos Text",system-ui,sans-serif;
  --f-body:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --r:6px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f161d; --surface:#16202a; --ink:#e7edf2; --muted:#93a3b2; --line:#26323e;
  --accent:#ff8a3a; --accent-ink:#1a0e05; --band:#0a1016; --band-ink:#e7edf2;
  --p-orange:#ff8a3a; --p-green:#4cc07c; --p-blue:#5b98f0; --p-brown:#c08a62; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f161d; --surface:#16202a; --ink:#e7edf2; --muted:#93a3b2; --line:#26323e;
  --accent:#ff8a3a; --accent-ink:#1a0e05; --band:#0a1016; --band-ink:#e7edf2;
  --p-orange:#ff8a3a; --p-green:#4cc07c; --p-blue:#5b98f0; --p-brown:#c08a62; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--f-body)}
a{color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--f-display);line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(28px,5vw,52px);font-weight:700}
h2{font-size:clamp(22px,3.2vw,34px);font-weight:700}
h3{font-size:17px;font-weight:500}
p{margin:0}
.lead{color:var(--muted);max-width:62ch}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.tag{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:10px}
.tag::before{content:"";width:28px;height:6px;border-radius:3px;background:repeating-linear-gradient(90deg,var(--c,var(--accent)) 0 6px,var(--surface) 6px 9px);border:1px solid var(--c,var(--accent))}
section{padding-block:clamp(48px,7vw,88px)}
.sec-head{display:grid;gap:12px;margin-bottom:32px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:var(--r);font:600 15px var(--f-body);text-decoration:none;border:1.5px solid transparent;cursor:pointer}
.btn-main{background:var(--accent);color:var(--accent-ink)}
.btn-ghost{border-color:currentColor;background:transparent;color:inherit}
.btn:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;min-height:64px}
.logo{font:700 18px var(--f-display);text-decoration:none;display:flex;align-items:center;gap:8px}
.logo i{display:inline-grid;grid-template-columns:repeat(4,4px);gap:2px}
.logo i b{height:18px;border-radius:2px}
.nav{display:flex;gap:20px;margin-left:auto;font-size:14px}
.nav a{text-decoration:none;color:var(--muted)}
.nav a:hover{color:var(--ink)}
.top .phone{font:600 15px var(--f-mono);text-decoration:none;white-space:nowrap}
@media (max-width:860px){.nav{display:none}.top .phone{margin-left:auto;font-size:14px}}

/* hero */
.hero{padding-block:clamp(40px,6vw,72px) clamp(40px,6vw,64px)}
.hero .wrap{display:grid;grid-template-columns:1.25fr .9fr;gap:40px;align-items:center}
.hero-copy{display:grid;gap:22px;min-width:0}
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.ticks li{display:flex;gap:10px;align-items:baseline}
.ticks li::before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:var(--accent);transform:translateY(-1px)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.panel{background:var(--band);color:var(--band-ink);border-radius:10px;padding:22px;display:grid;gap:14px;min-width:0}
.panel .ph{display:flex;justify-content:space-between;font:12px var(--f-mono);opacity:.7}
.rack{display:grid;gap:6px}
.u{display:grid;grid-template-columns:44px 1fr auto;gap:10px;align-items:center;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:4px;padding:8px 10px;font:12px var(--f-mono)}
.u .ports{display:flex;gap:3px;flex-wrap:wrap}
.u .ports span{width:9px;height:9px;border-radius:2px;background:rgba(255,255,255,.18)}
.u .ports span.on{background:var(--p-green)}
.u .ports span.o{background:var(--p-orange)}
.u .ports span.b{background:var(--p-blue)}
.u em{font-style:normal;opacity:.65}
.panel .foot{display:flex;justify-content:space-between;font:12px var(--f-mono);border-top:1px solid rgba(255,255,255,.12);padding-top:12px}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--p-green);margin-right:6px}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}}

/* stats */
.stats{border-block:1px solid var(--line);background:var(--surface);padding-block:0}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:22px 16px;border-left:1px solid var(--line);display:grid;gap:2px}
.stat:first-child{border-left:0;padding-left:0}
.stat b{font:700 26px var(--f-display)}
.stat span{color:var(--muted);font-size:14px}
@media (max-width:700px){.stats .wrap{grid-template-columns:1fr 1fr}.stat{border-left:0;padding-left:0;border-top:1px solid var(--line)}.stat:nth-child(-n+2){border-top:0}}

/* services */
.grid-svc{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.svc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:grid;gap:10px;grid-template-rows:auto auto 1fr auto;border-top:4px solid var(--c)}
.svc p{color:var(--muted);font-size:14.5px}
.svc .price{font:600 14px var(--f-mono);display:flex;justify-content:space-between;align-items:center;border-top:1px dashed var(--line);padding-top:10px}
.svc .price a{color:var(--accent);text-decoration:none;font-family:var(--f-body)}

/* price table */
.tbl{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
table{width:100%;border-collapse:collapse;min-width:520px;font-size:15px}
th,td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--line)}
th{font:600 12px var(--f-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
td.num{font-family:var(--f-mono);white-space:nowrap;text-align:right}
th.num{text-align:right}
tr:last-child td{border-bottom:0}
.note{font-size:13px;color:var(--muted);margin-top:12px}

/* steps */
.band{background:var(--band);color:var(--band-ink)}
.band .lead,.band .tag{color:rgba(238,242,245,.7)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s}
.steps li{counter-increment:s;padding:18px 18px 0 0;border-top:2px solid rgba(255,255,255,.18);position:relative;display:grid;gap:8px;align-content:start}
.steps li::before{content:counter(s,decimal-leading-zero);font:600 13px var(--f-mono);color:var(--accent)}
.steps li::after{content:"";position:absolute;top:-6px;left:0;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.steps p{font-size:14.5px;opacity:.75}
@media (max-width:860px){.steps{grid-template-columns:1fr;gap:4px}.steps li{border-top:0;border-left:2px solid rgba(255,255,255,.18);padding:0 0 18px 20px}.steps li::after{top:4px;left:-6px}}

/* segments */
.seg{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.seg article{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:grid;gap:12px;align-content:start}
.seg ul{margin:0;padding-left:18px;color:var(--muted)}
@media (max-width:760px){.seg{grid-template-columns:1fr}}

/* geo */
.geo{display:grid;grid-template-columns:1fr 1.1fr;gap:32px;align-items:start}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:14px}
.chips span.hq{border-color:var(--accent);color:var(--accent);font-weight:600}
.geo-col{display:grid;gap:18px;min-width:0}
.geo-col h3{font-size:14px;font-family:var(--f-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
@media (max-width:860px){.geo{grid-template-columns:1fr}}

/* cases */
.cases{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.case{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:grid;gap:10px}
.case dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:0;font-size:14px}
.case dt{color:var(--muted);font-family:var(--f-mono);font-size:12px;text-transform:uppercase;padding-top:2px}
.case dd{margin:0}

/* faq */
.faq{display:grid;gap:10px;max-width:820px}
details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
summary{cursor:pointer;padding:16px 20px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font:600 20px var(--f-mono);color:var(--accent);line-height:1}
details[open] summary::after{content:"–"}
details p{padding:0 20px 18px;color:var(--muted)}

/* form */
.order{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
form{background:var(--surface);color:var(--ink);border-radius:10px;padding:24px;display:grid;gap:14px}
label{display:grid;gap:6px;font-size:14px;font-weight:500}
input,select,textarea{font:inherit;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg);color:var(--ink);width:100%}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ok{background:rgba(47,154,90,.12);border:1px solid var(--p-green);border-radius:var(--r);padding:12px 14px;font-size:14px}
.contacts{display:grid;gap:14px}
.contacts .mono{font-size:18px}
@media (max-width:860px){.order{grid-template-columns:1fr}.row2{grid-template-columns:1fr}}

footer{border-top:1px solid var(--line);padding-block:32px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 40px;justify-content:space-between}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
html{scroll-behavior:smooth}

/* общие для внутренних страниц */
.crumbs{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}
.crumbs a{color:var(--muted)}
.crumbs span[aria-hidden]{opacity:.5}
.page-hero{padding-block:clamp(32px,5vw,56px) clamp(28px,4vw,44px);border-bottom:1px solid var(--line);background:var(--surface)}
.page-hero .wrap{display:grid;gap:16px}
.cols{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.prose{display:grid;gap:16px;max-width:68ch}
.prose h2{font-size:clamp(20px,2.6vw,26px);margin-top:12px}
.prose ul{margin:0;padding-left:20px;display:grid;gap:6px}
.aside{position:sticky;top:calc(env(safe-area-inset-top,0px) + 80px);background:var(--band);color:var(--band-ink);border-radius:10px;padding:22px;display:grid;gap:12px}
.aside .mono{font-size:20px}
.aside p{opacity:.75;font-size:14px}
.related{display:flex;flex-wrap:wrap;gap:8px}
.related a{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:14px;text-decoration:none}
.related a:hover{border-color:var(--accent);color:var(--accent)}
.svc h3 a{text-decoration:none}
.svc h3 a:hover{color:var(--accent)}
.nap{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;margin:0}
.nap dt{color:var(--muted);font:600 12px var(--f-mono);text-transform:uppercase;letter-spacing:.06em;padding-top:4px}
.nap dd{margin:0}
.foot-nav{display:flex;flex-wrap:wrap;gap:8px 18px}
.foot-nav a{color:var(--muted)}
@media (max-width:900px){.cols{grid-template-columns:1fr}.aside{position:static}}
.svc .price small.vat{display:block;font:400 11px var(--f-body);color:var(--muted);margin-top:2px}
form .consent{font-size:12px;color:var(--muted);margin:0}
form .consent a{color:inherit}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* фото: карточки услуг и шапка страниц услуг */
.svc{grid-template-rows:auto auto auto 1fr auto}
.svc-img{display:block;margin:-20px -20px 4px;aspect-ratio:3/2;overflow:hidden;background:var(--line)}
.svc-img img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.svc:hover .svc-img img{transform:scale(1.04)}
.ph-split{grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:40px;align-items:center}
.ph-copy{display:grid;gap:16px;min-width:0}
.ph-img{margin:0;border-radius:10px;overflow:hidden;aspect-ratio:3/2;background:var(--line)}
.ph-img img{display:block;width:100%;height:100%;object-fit:cover}
@media (max-width:860px){.ph-split{grid-template-columns:1fr;gap:24px}.ph-img{order:2}}
@media (prefers-reduced-motion:reduce){.svc-img img{transition:none}}
.case-img{position:relative;margin:-20px -20px 4px;aspect-ratio:3/2;overflow:hidden;border-radius:var(--r) var(--r) 0 0;background:var(--line)}
.case-img img{display:block;width:100%;height:100%;object-fit:cover}
.case-img figcaption{position:absolute;right:8px;bottom:8px;background:rgba(20,32,43,.72);color:#fff;font:500 11px var(--f-body);padding:3px 8px;border-radius:999px}

.hero-copy{grid-template-columns:minmax(0,1fr)}
.hero h1{font-size:clamp(28px,4vw,48px)}