/* Layout: a control cabinet read top to bottom — header strip, terminal-labelled sections, one live ladder rung, a photo wall. */
:root{
  --bg:#05080A;        /* control-room black, faint blue bias */
  --panel:#0C1317;
  --line:#1C2A33;
  --fg:#F4F8FA;        /* white text */
  --muted:#A3B4BE;
  --accent:#2BE07F;    /* signal green */
  --blue:#38A8FF;      /* bus blue */
  --live:#2BE07F;
  --w-ac:#F4F8FA; --w-ctl:#F0605B; --w-dc:#3D7BFF; --w-n:#7CC7FF; --w-pe1:#3CCB5A; --w-pe2:#F2D33A; --w-ext:#FF9A3D;
  --f-disp:"Unbounded","Arial Black",system-ui,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --gut-l:max(16px,env(safe-area-inset-left,0px));
  --gut-r:max(16px,env(safe-area-inset-right,0px));
  color-scheme:dark;
}
/* single dark look, by choice: same palette in every theme */

*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:16px;line-height:1.6}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--panel)}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:1120px;margin:0 auto;padding-left:var(--gut-l);padding-right:var(--gut-r)}
h1,h2,h3{font-family:var(--f-disp);text-wrap:balance;line-height:1.15;margin:0}
h2{font-size:clamp(1.6rem,3.6vw,2.4rem);font-weight:700}
h3{font-size:1.05rem;font-weight:500}
p{margin:0;max-width:65ch}
.mono{font-family:var(--f-mono)}
.tag{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--panel);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;gap:20px;padding-block:12px;flex-wrap:wrap}
.logo{font-family:var(--f-disp);font-weight:800;letter-spacing:.02em;font-size:1rem;text-decoration:none;display:flex;align-items:center;gap:10px}
.logo i{width:14px;height:14px;border-radius:50%;background:var(--live);box-shadow:0 0 0 3px color-mix(in srgb,var(--live) 25%,transparent)}
nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
nav a{font-family:var(--f-mono);font-size:.8rem;text-decoration:none;padding:6px 10px;border-radius:4px;color:var(--muted)}
nav a:hover{background:var(--bg);color:var(--fg)}

/* hero */
.hero{padding-block:clamp(48px,8vw,96px) 40px}
.hero h1{font-size:clamp(2.6rem,9vw,6.4rem);font-weight:800;letter-spacing:-.02em;line-height:.95}
.h1-brand span{color:var(--accent)}
.hero .lede{margin-top:24px;font-size:1.15rem;color:var(--muted)}
.strip{margin-top:40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--panel)}
.strip a{display:flex;flex-direction:column;gap:6px;padding:14px 16px;text-decoration:none;border-right:1px solid var(--line);border-bottom:3px solid transparent;transition:border-color .15s}
.strip a:hover{border-bottom-color:var(--accent)}
.strip b{font-family:var(--f-mono);font-size:.75rem;color:var(--accent);font-weight:500}
.strip span{font-weight:600;font-size:.95rem;line-height:1.3}

/* sections */
section{padding-block:clamp(56px,8vw,96px);border-top:1px solid var(--line)}
.head{display:grid;grid-template-columns:120px 1fr;gap:24px;margin-bottom:40px}
.head .tag{padding-top:8px}
.head p{margin-top:14px;color:var(--muted)}
@media (max-width:640px){.head{grid-template-columns:1fr;gap:8px}}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.cell{min-width:0}
.cell h3{margin-bottom:8px}
.cell p{color:var(--muted);font-size:.97rem}

/* pyramid */
.pyr{display:flex;flex-direction:column;gap:6px;align-items:center}
.pyr div{display:flex;justify-content:space-between;gap:16px;padding:12px 18px;background:var(--panel);border:1px solid var(--line);border-radius:4px;width:100%}
.pyr div:nth-child(1){max-width:46%}.pyr div:nth-child(2){max-width:60%}.pyr div:nth-child(3){max-width:74%}.pyr div:nth-child(4){max-width:88%}.pyr div:nth-child(5){max-width:100%}
.pyr b{font-family:var(--f-mono);font-weight:500;color:var(--accent);white-space:nowrap}
.pyr span{font-size:.92rem;text-align:right}
@media (max-width:640px){.pyr div{max-width:100%!important;flex-direction:column;gap:2px}.pyr span{text-align:left}}

/* cabinet steps */
.steps{list-style:none;padding:0;margin:0;display:grid;gap:0;counter-reset:s}
.steps li{display:grid;grid-template-columns:64px 1fr;gap:20px;padding-block:20px;border-bottom:1px solid var(--line);counter-increment:s}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--f-mono);color:var(--accent);font-size:1.1rem;padding-top:2px}
.steps li div{min-width:0}
.steps p{color:var(--muted);margin-top:4px}
.wires{margin-top:40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.wire{display:flex;align-items:center;gap:12px;padding:10px 14px;background:var(--panel);border:1px solid var(--line);border-radius:4px;font-size:.92rem}
.wire i{flex:none;width:36px;height:8px;border-radius:4px}
.wire i.pe{background:repeating-linear-gradient(90deg,var(--w-pe1) 0 6px,var(--w-pe2) 6px 12px)}
.note{margin-top:14px;font-size:.85rem;color:var(--muted)}

/* PLC */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media (max-width:860px){.cols{grid-template-columns:1fr}}
.cols>*{min-width:0}
.scan{display:grid;gap:8px;margin-top:20px}
.scan div{display:flex;gap:14px;align-items:baseline;padding:10px 14px;background:var(--panel);border-left:3px solid var(--accent);border-radius:0 4px 4px 0}
.scan b{font-family:var(--f-mono);font-weight:500;min-width:2ch}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--f-mono);font-weight:500;font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
td:first-child{font-family:var(--f-mono);color:var(--accent);white-space:nowrap}
.tbl{overflow-x:auto;margin-top:20px}

.ladder{margin-top:48px;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:24px}
.ladder-top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.ladder-top p{color:var(--muted);font-size:.95rem;margin-top:6px}
.lamp{display:flex;align-items:center;gap:10px;font-family:var(--f-mono);font-size:.85rem}
.lamp i{width:22px;height:22px;border-radius:50%;background:var(--line);border:2px solid var(--muted);transition:.15s}
.lamp.on i{background:var(--live);border-color:var(--live);box-shadow:0 0 14px var(--live)}
.svgbox{overflow-x:auto;margin-top:16px}
.svgbox svg{min-width:560px;width:100%;height:auto;display:block}
.svgbox text{font-family:var(--f-mono);font-size:12px;fill:var(--muted)}
.svgbox .w{stroke:var(--muted);stroke-width:2;fill:none;transition:stroke .12s}
.svgbox .w.on{stroke:var(--live);stroke-width:3}
.svgbox .rail{stroke:var(--fg);stroke-width:3}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn{font:600 .9rem var(--f-body);padding:10px 18px;border-radius:4px;border:1px solid var(--line);background:var(--bg);color:var(--fg);cursor:pointer;user-select:none;touch-action:manipulation}
.btn.go{background:var(--live);border-color:var(--live);color:#fff}
.btn.stop{background:#B42A26;border-color:#B42A26;color:#fff}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:filter .15s,border-color .15s,background .15s}
.btn:hover{filter:brightness(1.12)}
.btn.ghost{background:transparent;border-color:color-mix(in srgb,var(--fg) 30%,var(--line))}
.btn.ghost:hover{border-color:var(--accent);filter:none}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.cta .btn{font-size:1rem;padding:12px 22px}
.hdr-call{margin-left:12px;padding:8px 14px;min-height:40px!important;font-size:.85rem}
.hdr-call .short{display:none}
@media (min-width:641px) and (max-width:1180px){.hdr-call{display:none}}
@media (min-width:1181px){header .wrap{flex-wrap:nowrap;gap:14px}nav a{padding:6px 7px}}
.skip{position:absolute;left:-9999px;top:8px;z-index:30;background:var(--accent);color:#03140A;padding:10px 14px;border-radius:4px;font-weight:600}
.skip:focus{left:12px}

/* problems */
.probs{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.prob{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:22px;display:flex;flex-direction:column;gap:10px;min-width:0;transition:border-color .15s}
.prob:hover{border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}
.prob h3{font-size:1.1rem;font-weight:700}
.prob .q{font-family:var(--f-mono);font-size:.8rem;color:var(--blue)}
.prob p{color:var(--muted);font-size:.95rem}
.prob a{margin-top:auto;font-weight:600;color:var(--accent);text-decoration:none;font-size:.92rem}
.prob a:hover{text-decoration:underline}
.area{margin-top:28px;color:var(--muted);font-size:.95rem}
.area b{color:var(--fg);font-weight:600}

/* map */
.map{margin-top:20px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--panel);aspect-ratio:16/7;min-height:280px}
.map iframe{display:block;width:100%;height:100%;border:0;filter:grayscale(.2) contrast(1.05)}
@media (max-width:640px){.map{aspect-ratio:4/3}}

/* HMI / SCADA */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:760px){.compare{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:24px;min-width:0}
.card h3{font-size:1.4rem;font-weight:700}
.card ul{margin:14px 0 0;padding-left:18px;color:var(--muted)}
.card li{margin-bottom:6px}
.protos{margin-top:32px;display:flex;flex-wrap:wrap;gap:8px}
.protos span{font-family:var(--f-mono);font-size:.82rem;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}

/* gallery */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.chip{font:500 .85rem var(--f-mono);padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--muted);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.chip:hover{border-color:var(--blue);color:var(--fg)}
.photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.photo{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:6px;overflow:hidden;position:relative}
.photo img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--line);max-width:100%;cursor:zoom-in}
.photo figcaption{padding:10px 12px 12px;font-size:.92rem;display:flex;flex-direction:column;gap:4px}
.photo figcaption span{min-width:0;overflow-wrap:anywhere}
.photo figcaption em{font-style:normal;font-family:var(--f-mono);font-size:.7rem;color:var(--accent)}
.photo picture{display:block}
.photo img{transition:transform .3s}
.more{display:flex;justify-content:center;margin-top:20px}
.photo:hover img{transform:scale(1.03)}
.photo img.wide{object-fit:contain;background:#000}
.lb{position:fixed;inset:0;z-index:20;background:rgba(3,6,8,.94);display:flex;align-items:center;justify-content:center;padding:max(16px,env(safe-area-inset-top,0px)) var(--gut-r) max(16px,env(safe-area-inset-bottom,0px)) var(--gut-l);touch-action:pan-y}
.lb-top{position:absolute;top:max(14px,env(safe-area-inset-top,0px));left:var(--gut-l);right:var(--gut-r);display:flex;justify-content:space-between;align-items:center;gap:12px;z-index:2}
.lb-count{font-family:var(--f-mono);font-size:.85rem;color:var(--muted)}
.lb-btn{font:600 .9rem var(--f-body);padding:10px 16px;min-height:44px;border-radius:4px;border:1px solid var(--line);background:var(--panel);color:var(--fg);cursor:pointer}
.lb-btn:hover,.lb-nav:hover{border-color:var(--accent)}
.lb-fig{margin:0;display:flex;flex-direction:column;align-items:center;gap:14px;max-width:100%}
.lb-fig img{display:block;object-fit:contain;background:#000;border-radius:4px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.lb-cap{max-width:min(760px,100%);text-align:center;display:grid;gap:4px}
.lb-cap strong{font-family:var(--f-disp);font-weight:700;font-size:1.05rem}
.lb-cap span{color:var(--muted);font-size:.92rem}
.lb-cap em{font-style:normal;font-family:var(--f-mono);font-size:.75rem;color:var(--accent)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:rgba(12,19,23,.85);color:var(--fg);font-size:1.8rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:2}
.lb-nav.prev{left:var(--gut-l)}.lb-nav.next{right:var(--gut-r)}
.lb-hint{position:absolute;bottom:max(12px,env(safe-area-inset-bottom,0px));left:0;right:0;text-align:center;font-family:var(--f-mono);font-size:.72rem;color:var(--muted);margin:0;max-width:none}
@media (max-width:640px){.lb-nav{top:auto;bottom:max(14px,env(safe-area-inset-bottom,0px));transform:none;width:48px;height:48px}.lb-hint{display:none}}

.brand-mark{height:34px;width:auto;flex:none}
footer .brand-mark{height:40px}
.logo.has-img i{display:none}
.contact{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.ci{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:18px;min-width:0;display:flex;flex-direction:column;gap:6px}
.ci strong{font-size:1.1rem;font-weight:600;overflow-wrap:anywhere}
a.ci{text-decoration:none;color:inherit;transition:border-color .15s,background .15s}
a.ci:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--panel))}
.ci-act{font-size:.85rem;font-weight:600;color:var(--accent);margin-top:2px}
/* hero brand + keyword H1 */
.h1-brand{display:block;font-family:var(--f-disp);font-size:clamp(2.6rem,9vw,6.4rem);font-weight:800;letter-spacing:-.02em;line-height:.95;margin:0}
.hero h1{margin-top:22px;font-family:var(--f-body)!important;font-weight:600!important;font-size:clamp(1.15rem,2.6vw,1.5rem)!important;letter-spacing:0!important;line-height:1.35!important;max-width:34ch}
.faq{margin:0;display:grid;gap:0}
.faq div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:24px;padding-block:20px;border-bottom:1px solid var(--line)}
.faq dt{font-weight:600;font-size:1.05rem}
.faq dd{margin:0;color:var(--muted);max-width:65ch}
section{scroll-margin-top:72px}

/* mobile */
.btn{min-height:44px}
.chip{min-height:40px}
@media (max-width:640px){
  .hdr-call{position:absolute;top:10px;right:var(--gut-r);margin:0;padding:6px 12px;min-height:36px!important}
  .hdr-call .long{display:none}.hdr-call .short{display:inline}
  .logo{font-size:.85rem}
  header .wrap{position:relative}
  header .wrap{flex-direction:column;align-items:stretch;gap:6px;padding-block:10px 4px}
  nav{margin-left:0;width:100%;max-width:100%;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;min-width:0}
  nav::-webkit-scrollbar{display:none}
  nav a{white-space:nowrap;padding:10px 12px;flex:none}
  section{scroll-margin-top:104px}
  .hero{padding-block:36px 28px}
  .h1-brand{font-size:clamp(2rem,9.6vw,3.4rem)}
  .cta .btn{flex:1 1 180px}
  .strip{grid-template-columns:1fr 1fr}
  .faq div{grid-template-columns:1fr;gap:6px}
  .steps li{grid-template-columns:40px 1fr;gap:12px}
  .ladder{padding:16px}
  .svgbox svg{min-width:500px}
  .btns .btn{flex:1 1 140px}
  .card{padding:18px}
}
footer{border-top:1px solid var(--line);background:var(--panel)}
footer .wrap{padding-block:32px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
footer p{color:var(--muted);font-size:.9rem}

/* black / white / green / blue */
::selection{background:var(--blue);color:#00101F}
body{background:radial-gradient(900px 600px at 95% -5%,rgba(56,168,255,.14),transparent 70%) no-repeat,radial-gradient(700px 500px at -10% 30%,rgba(43,224,127,.08),transparent 70%) no-repeat,var(--bg)}
.tag{color:var(--blue)}
.steps li::before,.scan b{color:var(--blue)}
.scan div{border-left-color:var(--blue)}
th{color:var(--blue)}
nav a:hover{color:var(--accent);background:var(--panel)}
.strip a:nth-child(even) b{color:var(--blue)}
.strip a:nth-child(even):hover{border-bottom-color:var(--blue)}
.protos span{border-color:color-mix(in srgb,var(--blue) 45%,var(--line));color:var(--fg)}
.chip[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#00101F}
.btn.go,.btn.primary{color:#03140A;background:var(--accent);border-color:var(--accent)}
.card h3{color:var(--accent)}
.card:nth-child(2) h3{color:var(--blue)}
.faq dt{color:var(--fg)}
.ci a:hover{color:var(--accent)}
.lamp.on i{box-shadow:0 0 18px var(--live)}
footer{background:var(--panel)}
footer .logo{color:var(--fg)}

/* cookie consent */
.consent{position:fixed;left:var(--gut-l);right:var(--gut-r);bottom:max(16px,env(safe-area-inset-bottom,0px));z-index:25;max-width:560px;margin-left:auto;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:16px 18px;display:grid;gap:12px;box-shadow:0 12px 40px rgba(0,0,0,.5)}
.consent p{font-size:.9rem;color:var(--muted)}
.consent .btns{margin:0}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
[hidden]{display:none!important}img{max-width:100%}body{margin:0;-webkit-text-size-adjust:100%}html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
address{font-style:normal}.photo img{height:auto}.ci a{text-decoration:none}.ci a:hover{color:var(--accent)}
/* messengers + hours */
.msg{margin-top:16px;color:var(--muted);font-size:.95rem}
.msg a{font-weight:600;text-decoration:none}
.viber{color:#9d8cff}.wa{color:#38d97a}
.msg a:hover{text-decoration:underline}
.ci-act.viber{color:#9d8cff}.ci-act.wa{color:#38d97a}
.hours{margin-top:20px;color:var(--muted)}
.hours b{color:var(--fg);font-weight:600}