/* Qreniqx company website. Design tokens are the SCADA portal's own (src/Scada.Server/wwwroot/app.css :root), so the two products look like one company. Dark only, as the portal is. No web fonts, no external requests. */
:root{
  --bg:#050f14; --bg2:#09171e; --panel:#0d2029; --panel2:#112c38; --line:#1a3a47; --line2:#2a5668;
  --ink:#e6f4f8; --muted:#8bb0bd; --accent:#2cd5c4; --accent2:#4aa8ff; --accent-ink:#04141a;
  --ok:#5ff0a6; --warn:#f6c453; --bad:#ff8f84; --info:#7fe0f0; --sim:#d9c2ff;
  --accent-rgb:44,213,196; --accent2-rgb:74,168,255; --shadow:0 10px 30px rgba(0,0,0,.35); --r:14px;
  --max:1160px; --gut:clamp(16px,4vw,32px);
}
*,*::before,*::after{box-sizing:border-box}
html{color-scheme:dark;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,Roboto,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{max-width:100%;height:auto}
a{color:var(--accent2);text-underline-offset:3px}
a:hover{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:650;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,5.4vw,3.6rem);letter-spacing:-.025em}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:10px 16px;border-radius:8px;z-index:100;font-weight:600}
.skip:focus{left:8px}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(5,15,20,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:20px;min-height:68px}
.logo{display:inline-flex;align-items:center;height:28px}
.logo img{height:100%;width:auto;display:block}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{color:var(--ink);text-decoration:none;padding:9px 12px;border-radius:9px;font-size:.95rem}
.nav a:hover{background:var(--panel)}
.nav a[aria-current=page]{color:var(--accent);background:rgba(var(--accent-rgb),.1)}
.nav .login{border:1px solid var(--line2);margin-left:6px}
.nav .login:hover{border-color:var(--accent);color:var(--accent)}
.menu-btn{display:none;margin-left:auto;background:var(--panel);color:var(--ink);border:1px solid var(--line2);border-radius:10px;padding:9px 14px;font:inherit;cursor:pointer}
@media(max-width:900px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:2px;padding:10px var(--gut) 16px;background:var(--bg2);border-bottom:1px solid var(--line);margin:0}
  .nav.open{display:flex}
  .nav a{padding:13px 12px}
  .nav .login{margin:6px 0 0;text-align:center}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 22px;border-radius:12px;border:1px solid var(--line2);background:var(--panel);color:var(--ink);font:inherit;font-weight:600;text-decoration:none;cursor:pointer;transition:transform .15s ease,border-color .15s ease,background .15s ease}
.btn:hover{border-color:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--accent-ink);border-color:transparent}
.btn.primary:hover{color:var(--accent-ink);filter:brightness(1.07)}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* sections */
section{padding:clamp(48px,8vw,88px) 0}
.sec-alt{background:var(--bg2);border-block:1px solid var(--line)}
.eyebrow{display:inline-block;color:var(--accent);font-size:.8rem;font-weight:650;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.lede{font-size:1.15rem;color:var(--muted);max-width:62ch}
.sec-head{max-width:70ch;margin-bottom:34px}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:1000px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
a.card,button.card{display:block;text-align:left;color:inherit;text-decoration:none;font:inherit;cursor:pointer;width:100%;transition:border-color .15s ease,transform .15s ease,background .15s ease}
a.card:hover,button.card:hover{border-color:var(--accent);transform:translateY(-2px);background:var(--panel2)}
.card h3{margin-bottom:.35em}.card p{color:var(--muted);margin-bottom:0}

/* status labels */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600;border:1px solid transparent;white-space:nowrap}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.b-evaluation{color:var(--ok);background:rgba(95,240,166,.12);border-color:rgba(95,240,166,.3)}
.b-development{color:var(--warn);background:rgba(246,196,83,.12);border-color:rgba(246,196,83,.3)}
.b-planned{color:var(--info);background:rgba(127,224,240,.1);border-color:rgba(127,224,240,.28)}
.badge.sim{color:var(--sim);background:rgba(177,140,255,.16);border-color:rgba(177,140,255,.3)}

/* hero */
.hero{padding:clamp(40px,7vw,84px) 0 clamp(40px,6vw,72px);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:60vw;height:60vw;max-width:760px;max-height:760px;background:radial-gradient(closest-side,rgba(var(--accent-rgb),.16),transparent);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,56px);align-items:center;position:relative}
@media(max-width:940px){.hero-grid{grid-template-columns:minmax(0,1fr)}}
.hero h1 .hl{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* illustrative dashboard (hero) */
.mock{background:var(--panel);border:1px solid var(--line2);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;align-items:center;gap:10px;padding:11px 16px;border-bottom:1px solid var(--line);background:var(--bg2);font-size:.8rem;color:var(--muted)}
.mock-bar .dots{display:flex;gap:6px}.mock-bar .dots i{width:9px;height:9px;border-radius:50%;background:var(--line2)}
.mock-bar .badge{margin-left:auto}
.mock-body{padding:16px;display:grid;gap:12px}
.kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.kpi{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.kpi small{display:block;color:var(--muted);font-size:.72rem}
.kpi b{font-size:1.25rem;font-variant-numeric:tabular-nums}
.chart{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.chart small{color:var(--muted);font-size:.72rem}
.chart svg{display:block;width:100%;height:120px}
.chart .area{fill:rgba(var(--accent-rgb),.16)}.chart .line{fill:none;stroke:var(--accent);stroke-width:2.2;stroke-linejoin:round;stroke-linecap:round}
.chart .base{fill:none;stroke:var(--accent2);stroke-width:1.5;stroke-dasharray:4 4}
.mock-alarms{display:grid;gap:6px;font-size:.82rem}
.mock-alarms div{display:flex;gap:10px;align-items:center;padding:7px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg2)}
.mock-alarms .dot{width:8px;height:8px;border-radius:50%}
.fine{font-size:.8rem;color:var(--muted)}

/* ecosystem + architecture */
.prod-tabs{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:20px;align-items:start}
@media(max-width:900px){.prod-tabs{grid-template-columns:minmax(0,1fr)}}
.prod-list{display:grid;gap:8px}
.prod-list button{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;color:var(--ink);font:inherit;padding:13px 16px;cursor:pointer;text-align:left;transition:border-color .15s,background .15s}
.prod-list button:hover{border-color:var(--line2);background:var(--panel2)}
.prod-list button[aria-selected=true]{border-color:var(--accent);background:var(--panel2);box-shadow:inset 3px 0 0 var(--accent)}
.prod-panel{background:var(--panel);border:1px solid var(--line2);border-radius:var(--r);padding:26px;box-shadow:var(--shadow);position:sticky;top:86px}
@media(max-width:900px){.prod-panel{position:static}}
.prod-panel h3{font-size:1.5rem}
.prod-panel dl{margin:18px 0 0;display:grid;gap:12px}
.prod-panel dt{font-size:.78rem;color:var(--accent);letter-spacing:.1em;text-transform:uppercase;font-weight:650}
.prod-panel dd{margin:2px 0 0;color:var(--muted)}
.prod-panel .caution{margin-top:16px;padding:12px 14px;border-radius:10px;border:1px solid rgba(246,196,83,.35);background:rgba(246,196,83,.08);color:var(--ink);font-size:.92rem}

.arch{display:grid;gap:0;margin:8px 0 0;padding:0;list-style:none;counter-reset:a}
.arch li{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px;padding-bottom:22px}
.arch li:last-child{padding-bottom:0}
.arch .n{width:48px;height:48px;border-radius:14px;border:1px solid var(--line2);background:var(--panel2);display:grid;place-items:center;font-weight:700;color:var(--accent);position:relative;z-index:1}
.arch li:not(:last-child)::before{content:"";position:absolute;left:23px;top:48px;bottom:0;width:2px;background:repeating-linear-gradient(to bottom,var(--accent) 0 6px,transparent 6px 12px);background-size:2px 24px;animation:flow 1.4s linear infinite}
.arch .body{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.arch .body h3{font-size:1.05rem;margin:0 0 4px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.arch .body p{margin:0;color:var(--muted);font-size:.95rem}
@keyframes flow{from{background-position:0 0}to{background-position:0 24px}}
@media(min-width:1000px){
  .arch{grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
  .arch li{grid-template-columns:minmax(0,1fr);padding:0;gap:10px}
  .arch li:not(:last-child)::before{left:56px;right:-12px;top:23px;bottom:auto;width:auto;height:2px;background:repeating-linear-gradient(to right,var(--accent) 0 6px,transparent 6px 12px);background-size:24px 2px;animation:flowx 1.4s linear infinite}
  @keyframes flowx{from{background-position:0 0}to{background-position:24px 0}}
}

/* solutions */
.sol h3{display:flex;gap:10px;align-items:flex-start}
.sol dl{margin:12px 0 0;display:grid;gap:10px}
.sol dt{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:650}
.sol dd{margin:2px 0 0;color:var(--muted)}

/* technology */
.cap{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start}
.cap .mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:700}
.cap .yes{background:rgba(95,240,166,.14);color:var(--ok);border:1px solid rgba(95,240,166,.3)}
.cap .no{background:rgba(127,224,240,.1);color:var(--info);border:1px solid rgba(127,224,240,.28)}
.filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.filter button{background:var(--panel);color:var(--ink);border:1px solid var(--line2);border-radius:999px;padding:8px 16px;font:inherit;cursor:pointer}
.filter button[aria-pressed=true]{border-color:var(--accent);background:rgba(var(--accent-rgb),.14);color:var(--accent)}

/* pricing */
.pkg{display:flex;flex-direction:column;gap:12px}
.pkg .price{font-size:1.3rem;font-weight:650}
.pkg ul{margin:0;padding:0;list-style:none;display:grid;gap:8px;flex:1}
.pkg li{display:flex;gap:10px;align-items:center;font-size:.95rem}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
table{border-collapse:collapse;width:100%;min-width:640px;background:var(--panel)}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:.95rem}
th{background:var(--bg2);color:var(--muted);font-weight:600}
td.c{text-align:center}
tr:last-child td{border-bottom:0}

/* forms */
.form{display:grid;gap:16px;max-width:760px}
.row2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(max-width:640px){.row2{grid-template-columns:minmax(0,1fr)}}
label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.req{color:var(--bad)}
input,select,textarea{width:100%;background:var(--bg2);color:var(--ink);border:1px solid var(--line2);border-radius:11px;padding:12px 14px;font:inherit;min-height:46px}
textarea{min-height:130px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:3px solid rgba(var(--accent-rgb),.45);outline-offset:1px;border-color:var(--accent)}
[aria-invalid=true]{border-color:var(--bad)}
.err{color:var(--bad);font-size:.88rem;margin-top:5px;min-height:1.2em}
.notice{border:1px solid rgba(246,196,83,.4);background:rgba(246,196,83,.08);border-radius:12px;padding:14px 16px;font-size:.95rem}
.result{border-radius:12px;padding:16px 18px;margin-top:6px}
.result.ok{border:1px solid rgba(95,240,166,.4);background:rgba(95,240,166,.08)}
.result.bad{border:1px solid rgba(255,143,132,.45);background:rgba(255,107,94,.1)}

/* legal */
.legal{max-width:78ch}.legal h2{margin-top:1.6em;font-size:1.3rem}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--bg2);padding:44px 0 28px;font-size:.95rem}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,minmax(0,1fr));gap:28px}
@media(max-width:860px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.foot-grid{grid-template-columns:minmax(0,1fr)}}
.site-foot h2{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-foot a{color:var(--ink);text-decoration:none}.site-foot a:hover{color:var(--accent)}
.foot-base{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between}

/* reveal-on-scroll (only when JS is on and motion is allowed) */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.js .rv.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .rv{opacity:1;transform:none}
}

/* spacing and layout helpers (no inline styles anywhere, so a strict Content-Security-Policy works) */
.mt8{margin-top:8px}.mt10{margin-top:10px}.mt12{margin-top:12px}.mt18{margin-top:18px}.mt22{margin-top:22px}.mt24{margin-top:24px}.mt28{margin-top:28px}.mt48{margin-top:48px}.mb22{margin-bottom:22px}.mb24{margin-bottom:24px}.m0{margin:0}
.narrow{max-width:760px}.center{justify-content:center}.hero-tight{padding-bottom:24px}
.h1-page{font-size:clamp(2rem,4.6vw,3rem)}
.cap-left{text-align:left;padding:10px 14px}
.trap{position:absolute;left:-9999px}
.mock-cap{margin:10px 4px 0}.foot-tag{margin-top:14px;max-width:34ch}
.cta-card{display:grid;gap:12px;text-align:center;justify-items:center;padding:clamp(26px,5vw,48px)}
.card-head{display:flex;justify-content:space-between;gap:8px;align-items:flex-start;flex-wrap:wrap}
.dot-warn{background:var(--warn)}.dot-info{background:var(--info)}
.draw{transition:stroke-dashoffset 1.6s ease}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
@media print{.js .rv{opacity:1!important;transform:none!important}.site-head,.menu-btn,.skip{display:none}body{background:#fff;color:#000}}