/* Kernlux Development Labs — shared design system (kernlux.com)
   Dark, Glass, violet + cyan. Self-hosted fonts, no external requests, no JS needed to read anything. */
@font-face{font-family:"Geist";src:url(fonts/geist-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Geist";src:url(fonts/geist-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Geist";src:url(fonts/geist-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Geist Mono";src:url(fonts/geist-mono-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Geist Mono";src:url(fonts/geist-mono-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Geist Mono";src:url(fonts/geist-mono-700.woff2) format("woff2");font-weight:700;font-display:swap}

:root{
  --bg:#070B16; --bg-2:#0C1226; --surface:rgba(255,255,255,.045); --surface-hi:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09); --line-hi:rgba(110,168,255,.45);
  --text:#E6F0FF; --muted:#8FA8CF; --faint:#6A7FA6;
  --violet:#2F6BFF; --violet-hi:#6EA8FF; --violet-lo:#1F4FD8; --cyan:#22D3EE; --cyan-lo:#06B6D4;
  --ok:#4ADE80; --warn:#FBBF24;
  --radius:16px; --radius-sm:10px; --maxw:1160px;
  --font-display:"Geist",system-ui,sans-serif; --font-body:"Geist",system-ui,sans-serif; --font-mono:"Geist Mono",ui-monospace,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box} html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 var(--font-body);font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(900px 520px at 85% -8%,rgba(47,107,255,.22),transparent 60%),radial-gradient(700px 480px at 5% 8%,rgba(34,211,238,.09),transparent 60%)}
img,svg{max-width:100%;display:block} img{height:auto} a{color:var(--violet-hi);text-decoration:none} a:hover{color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--violet);color:#fff;padding:8px 14px;border-radius:8px;z-index:100} .skip:focus{left:8px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,11,22,.72);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;margin-right:auto} .brand img{height:44px;width:auto}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:var(--muted);font-size:15px;font-weight:500;padding:8px 12px;border-radius:9px;transition:color .15s,background .15s}
.nav a:hover,.nav a[aria-current=page]{color:#fff;background:var(--surface)}
.nav-toggle{display:none;background:var(--surface);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 12px;font:600 14px var(--font-body);cursor:pointer}

/* ---- buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px/1 var(--font-body);padding:14px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s;white-space:nowrap}
.btn.primary{background:linear-gradient(180deg,#5B93FF,#2F6BFF);color:#fff;box-shadow:0 8px 28px -8px rgba(31,79,216,.8),inset 0 1px 0 rgba(255,255,255,.28)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -8px rgba(31,79,216,.95),inset 0 1px 0 rgba(255,255,255,.35);color:#fff}
.btn.ghost{background:var(--surface);border-color:var(--line);color:var(--text)} .btn.ghost:hover{border-color:var(--line-hi);background:var(--surface-hi);color:#fff}
.btn.small{padding:10px 16px;font-size:14px;border-radius:10px}

/* ---- type */
h1,h2,h3{font-family:var(--font-display);color:#fff;line-height:1.08;letter-spacing:-.025em;margin:0}
h1{font-size:clamp(40px,6.2vw,82px);font-weight:700;letter-spacing:-.035em}
h2{font-size:clamp(30px,3.8vw,48px);font-weight:700} h3{font-size:21px;font-weight:600;letter-spacing:-.015em}
p{margin:0 0 1em} .lead{font-size:clamp(18px,1.6vw,21px);color:var(--muted);max-width:60ch}
.eyebrow{font:600 12.5px/1 var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent)}
.grad{background:linear-gradient(95deg,#BFDBFF 0%,#4C86FF 45%,#22D3EE 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
code,kbd,.mono{font-family:var(--font-mono);font-size:.9em} code{background:var(--surface);border:1px solid var(--line);padding:2px 7px;border-radius:7px}

/* ---- hero */
.hero{position:relative;padding:92px 0 72px;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero h1{margin:22px 0 24px} .hero .lead{margin-bottom:34px} .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero.center .wrap{grid-template-columns:1fr;text-align:center;justify-items:center} .hero.center .lead{margin-inline:auto}
.hero.center .cta-row{justify-content:center}
.hero-art{position:relative;aspect-ratio:1/1;max-width:520px;margin-inline:auto;width:100%}
.hero-art .halo{position:absolute;inset:-14%;background:radial-gradient(closest-side,rgba(47,107,255,.45),rgba(34,211,238,.14) 55%,transparent 72%);filter:blur(10px)}
.hero-art .star{position:absolute;inset:6%;animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-12px) rotate(1.2deg)}}
.chip-float{position:absolute;background:rgba(16,17,27,.82);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:14px;padding:10px 14px;font:500 13px var(--font-body);color:var(--muted);box-shadow:0 18px 40px -18px #000}
.chip-float b{color:#fff;font-weight:600;display:block;font-size:14px}
.cf1{left:-4%;top:14%} .cf2{right:-2%;top:46%} .cf3{left:6%;bottom:6%}

/* ---- sections */
section{position:relative} .sec{padding:84px 0} .sec.tight{padding:56px 0}
.sec-head{max-width:720px;margin-bottom:44px} .sec-head h2{margin:16px 0 16px} .sec-head p{color:var(--muted);margin:0}
.band{background:linear-gradient(180deg,transparent,rgba(47,107,255,.07),transparent);border-block:1px solid var(--line)}

/* ---- cards + grids */
.grid{display:grid;gap:20px} .g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:repeat(2,1fr)} .g4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.022));border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative;transition:transform .2s,border-color .2s,background .2s;box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
a.card{display:block;color:inherit} a.card:hover{transform:translateY(-4px);border-color:var(--line-hi);background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.03))}
.card h3{margin:0 0 8px} .card p{color:var(--muted);margin:0;font-size:16px}
.card .num{font:600 13px var(--font-mono);color:var(--cyan);letter-spacing:.14em;margin-bottom:18px;display:block}
.app{display:flex;flex-direction:column;gap:14px;min-height:210px} .app p{flex:1} .app-foot{margin-top:auto}
.app-top{display:flex;align-items:center;gap:16px} .app-ico{width:60px;height:60px;border-radius:23%;flex:none;box-shadow:0 10px 24px -10px #000}
.app-ico.ph{display:grid;place-items:center;border:1px solid var(--line)} .app-ico.ph img{width:34px}
.app h3{margin:0;font-size:20px} .app .tag{font-size:13px;color:var(--faint);margin-top:2px}
.status{display:inline-block;font:600 11.5px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;padding:6px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.status.live{color:var(--ok);border-color:rgba(74,222,128,.35);background:rgba(74,222,128,.08)}
.status.test{color:var(--warn);border-color:rgba(251,191,36,.35);background:rgba(251,191,36,.07)}
.status.soon{color:var(--violet-hi);border-color:rgba(110,168,255,.35);background:rgba(110,168,255,.08)}

/* ---- feature split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.logo-stage{display:grid;place-items:center;aspect-ratio:16/10;border-radius:22px;border:1px solid var(--line);background:radial-gradient(70% 90% at 50% 0%,rgba(47,107,255,.25),rgba(7,11,22,.4) 70%),var(--bg-2);padding:8%;position:relative;overflow:hidden}
.logo-stage::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1.2px);background-size:22px 22px;mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent);-webkit-mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent);pointer-events:none}
.logo-stage img{position:relative;z-index:1;max-width:86%}
.ticks{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px} .ticks li{display:flex;gap:12px;color:var(--muted)} .ticks li::before{content:"";flex:none;width:18px;height:18px;margin-top:4px;border-radius:5px;background:linear-gradient(135deg,var(--violet),var(--cyan));-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M4 9.5l3.2 3.2L14 5.8' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M4 9.5l3.2 3.2L14 5.8' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}

/* ---- steps (verification) */
.steps{counter-reset:s;display:grid;gap:16px;max-width:820px}
.step{counter-increment:s;display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.step::before{content:counter(s,decimal-leading-zero);font:700 22px var(--font-mono);color:var(--cyan);padding-top:2px} .step h3{margin:0 0 6px;font-size:19px} .step p{margin:0;color:var(--muted);font-size:16px}

/* ---- prose pages */
.page-hero{padding:76px 0 40px} .page-hero h1{font-size:clamp(36px,5vw,64px);margin:18px 0 20px}
.prose{max-width:760px} .prose h2{font-size:28px;margin:48px 0 14px} .prose h3{margin:30px 0 8px} .prose p,.prose li{color:#C7D6EE} .prose ul{padding-left:1.2em} .prose li{margin:6px 0}
.note{border:1px dashed rgba(251,191,36,.45);background:rgba(251,191,36,.06);color:#F5E1A4;border-radius:12px;padding:14px 18px;font-size:15px;margin:26px 0}
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.sw{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg-2)} .sw i{display:block;height:84px} .sw div{padding:10px 12px;font:500 12.5px var(--font-mono);color:var(--muted)} .sw b{display:block;color:#fff;font-family:var(--font-body);font-size:14px}
.dl{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.specimen{font-family:var(--font-display);font-size:clamp(40px,7vw,92px);font-weight:700;letter-spacing:-.03em;line-height:1}

/* ---- footer */
.site-footer{margin-top:60px;border-top:1px solid var(--line);background:linear-gradient(180deg,transparent,rgba(47,107,255,.05))}
.foot{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;padding:56px 0 36px} .foot img.fl{height:40px;width:auto;margin-bottom:16px}
.foot h4{margin:0 0 14px;font:600 12.5px var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--faint)}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:9px} .foot a{color:var(--muted);font-size:15px} .foot a:hover{color:#fff} .foot p{color:var(--faint);font-size:14.5px;max-width:36ch}
.legal{border-top:1px solid var(--line);padding:22px 0 40px;color:var(--faint);font-size:13.5px;line-height:1.6;display:grid;gap:8px}

/* ---- responsive */
@media (max-width:980px){
  .hero .wrap,.split{grid-template-columns:1fr} .hero{padding:56px 0 40px} .hero-art{max-width:260px;order:-1;margin:0 auto -8px}
  .g3,.g4{grid-template-columns:repeat(2,1fr)} .foot{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .hero-art{max-width:112px;margin:0 auto -22px} .hero{padding-top:36px} .hero h1{font-size:clamp(34px,10.2vw,48px);letter-spacing:-.03em;margin:18px 0 18px} .hero .lead{font-size:17px;margin-bottom:26px}
  .cta-row .btn{flex:1 1 100%;justify-content:center} .page-hero{padding:52px 0 28px} .eyebrow{letter-spacing:.14em;font-size:11.5px} h2{font-size:clamp(27px,8vw,36px)}
  .logo-stage{aspect-ratio:auto;padding:28px 18px} .card{padding:22px} .foot{gap:28px} .brand img{height:38px}
  body{font-size:16px} .sec{padding:60px 0}
  .nav-toggle{display:block} .nav{position:absolute;left:0;right:0;top:68px;background:rgba(7,11,22,.97);border-bottom:1px solid var(--line);padding:12px 24px 20px;flex-direction:column;align-items:stretch;display:none}
  .nav.open{display:flex} .nav a{padding:13px 12px;font-size:17px}
  .g2,.g3,.g4{grid-template-columns:1fr} .foot{grid-template-columns:1fr} .chip-float{display:none}
  .step{grid-template-columns:44px 1fr;padding:18px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important} html{scroll-behavior:auto}}

/* ---- FAQ */
.faq-group{margin:0 0 44px} .faq-group h2{font-size:15px;font:600 12.5px var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin:0 0 14px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin:0 0 10px;transition:border-color .2s,background .2s}
.faq details[open]{border-color:var(--line-hi);background:var(--surface-hi)}
.faq summary{list-style:none;cursor:pointer;padding:18px 54px 18px 22px;font:600 17.5px/1.4 var(--font-display);color:#fff;position:relative;border-radius:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:22px;top:50%;width:10px;height:10px;border-right:2px solid var(--violet-hi);border-bottom:2px solid var(--violet-hi);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq .ans{padding:0 22px 20px;color:#C7D6EE;font-size:16.5px;line-height:1.7} .faq .ans p{margin:0}
.faq-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;background:linear-gradient(135deg,rgba(47,107,255,.2),rgba(34,211,238,.08));border:1px solid var(--line-hi);border-radius:18px;padding:26px 30px;margin-top:34px}
.faq-cta h3{margin:0 0 4px} .faq-cta p{margin:0;color:var(--muted)}

/* ---- contact form */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:start}
.cform{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:20px;padding:30px;display:grid;gap:18px}
.cform .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cform label{display:grid;gap:7px;font:600 13.5px var(--font-body);color:#C7D6EE}
.cform input,.cform select,.cform textarea{font:400 16px var(--font-body);color:#fff;background:rgba(5,8,18,.7);border:1px solid var(--line);border-radius:11px;padding:13px 14px;width:100%;transition:border-color .15s,box-shadow .15s}
.cform textarea{min-height:150px;resize:vertical} .cform select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8FA8CF 50%),linear-gradient(135deg,#8FA8CF 50%,transparent 50%);background-position:calc(100% - 20px) 55%,calc(100% - 14px) 55%;background-size:6px 6px;background-repeat:no-repeat}
.cform input:focus,.cform select:focus,.cform textarea:focus{outline:none;border-color:var(--violet-hi);box-shadow:0 0 0 3px rgba(47,107,255,.25)}
.cform .hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.cform small{color:var(--faint);font-size:13px;line-height:1.5}
.msg{border-radius:12px;padding:14px 18px;font-size:15px} .msg.ok{background:rgba(74,222,128,.09);border:1px solid rgba(74,222,128,.35);color:#B9F3CE} .msg.bad{background:rgba(248,113,113,.09);border:1px solid rgba(248,113,113,.4);color:#FECACA}
.side-card{display:grid;gap:18px}

/* ---- chat assistant */
.kc-fab{position:fixed;right:22px;bottom:22px;z-index:90;display:flex;align-items:center;gap:9px;background:linear-gradient(180deg,#5B93FF,#2F6BFF);color:#fff;border:0;border-radius:999px;padding:14px 20px 14px 16px;font:600 15px var(--font-body);cursor:pointer;box-shadow:0 14px 36px -10px rgba(31,79,216,.9),inset 0 1px 0 rgba(255,255,255,.3);transition:transform .15s}
.kc-fab:hover{transform:translateY(-2px)} .kc-fab.on{display:none}
.kc-box{position:fixed;right:22px;bottom:22px;z-index:95;width:392px;max-width:calc(100vw - 24px);height:560px;max-height:calc(100vh - 44px);display:flex;flex-direction:column;background:rgba(9,14,30,.97);border:1px solid var(--line-hi);border-radius:20px;box-shadow:0 30px 80px -20px #000,0 0 0 1px rgba(255,255,255,.03);overflow:hidden;animation:kcin .22s ease-out}
.kc-box[hidden]{display:none} @keyframes kcin{from{opacity:0;transform:translateY(14px) scale(.98)}}
.kc-head{display:flex;align-items:center;padding:16px 18px;background:linear-gradient(135deg,rgba(47,107,255,.35),rgba(34,211,238,.12));border-bottom:1px solid var(--line)}
.kc-title{display:grid;margin-right:auto} .kc-title b{font:600 16px var(--font-display);color:#fff} .kc-title small{color:#9FB6DA;font-size:12.5px}
.kc-x{background:none;border:0;color:#cfe0ff;font-size:28px;line-height:1;cursor:pointer;padding:0 4px;border-radius:8px}
.kc-log{flex:1;overflow:auto;padding:18px;display:flex;flex-direction:column;gap:10px}
.kc-m{max-width:88%;padding:11px 14px;border-radius:15px;font-size:15px;line-height:1.55;animation:kcm .2s ease-out} @keyframes kcm{from{opacity:0;transform:translateY(6px)}}
.kc-m.bot{align-self:flex-start;background:rgba(255,255,255,.07);color:#E6F0FF;border-bottom-left-radius:5px} .kc-m.me{align-self:flex-end;background:linear-gradient(180deg,#4C86FF,#2F6BFF);color:#fff;border-bottom-right-radius:5px}
.kc-m a{color:#8CC4FF;text-decoration:underline} .kc-typing{display:flex;gap:5px;padding:14px}
.kc-typing i{width:7px;height:7px;border-radius:50%;background:#8FA8CF;animation:kcb 1s infinite} .kc-typing i:nth-child(2){animation-delay:.15s} .kc-typing i:nth-child(3){animation-delay:.3s} @keyframes kcb{50%{transform:translateY(-4px);opacity:.5}}
.kc-chips{display:flex;flex-wrap:wrap;gap:7px;padding:0 18px 12px;max-height:168px;overflow:auto} .kc-chips:empty{display:none}
.kc-chip{background:transparent;border:1px solid var(--line-hi);color:#BFDBFF;border-radius:999px;padding:7px 12px;font:500 13px var(--font-body);cursor:pointer;text-align:left} .kc-chip:hover{background:rgba(47,107,255,.2);color:#fff}
.kc-form{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line)} .kc-form input{flex:1;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:11px;padding:11px 13px;color:#fff;font:400 15px var(--font-body)} .kc-form input:focus{outline:none;border-color:var(--violet-hi)}
.kc-form button{background:var(--violet);color:#fff;border:0;border-radius:11px;padding:0 16px;font:600 14px var(--font-body);cursor:pointer}
.kc-foot{padding:9px 16px 13px;font-size:12.5px;color:var(--faint);text-align:center} .kc-foot a{color:#8CC4FF}
@media (max-width:980px){.contact-grid{grid-template-columns:1fr}}
@media (max-width:720px){.cform .row{grid-template-columns:1fr} .cform{padding:22px} .kc-box{right:8px;bottom:8px;height:calc(100vh - 16px);max-height:none;width:calc(100vw - 16px)} .kc-fab span{display:none} .kc-fab{padding:15px}}