/* ============================================================
   CORCELIUM — design system  (refined / high-end)
   ============================================================ */
:root{
  --bg:#070809;
  --bg-1:#0a0c10;
  --panel:#0c0f15;
  --panel-2:#0e1219;
  --line:rgba(150,165,200,.12);
  --line-2:rgba(150,165,200,.20);
  --ink:#edeff4;
  --ink-2:#c4cad7;
  --muted:#8b93a6;
  --muted-2:#5d6577;
  --accent:#8ea2ff;        /* restrained periwinkle */
  --accent-deep:#5e74e0;
  --accent-soft:rgba(142,162,255,.10);
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  letter-spacing:-.01em;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(142,162,255,.22)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
section{position:relative;z-index:1}

/* serif accent used sparingly inside headings */
.serif{font-family:var(--serif);font-weight:400;font-style:italic;letter-spacing:0;color:var(--accent)}

/* ---------- background layers (subtle) ---------- */
#bg-canvas{position:fixed;inset:0;z-index:-2;display:block;opacity:.72}
.bg-aura{
  position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(900px 560px at 82% -12%, rgba(94,116,224,.14), transparent 60%),
    radial-gradient(700px 520px at -5% 8%, rgba(142,162,255,.08), transparent 60%),
    var(--bg);
}
.bg-grid{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.42;
  background-image:
    linear-gradient(rgba(150,165,200,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(150,165,200,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 26%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 26%, #000 0%, transparent 78%);
}
#cursor-glow{
  position:fixed;top:0;left:0;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle, rgba(142,162,255,.10), transparent 60%);
  transform:translate(-50%,-50%);pointer-events:none;z-index:0;opacity:0;
  transition:opacity .5s ease;will-change:transform;
}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  background:rgba(7,8,9,.6);border-bottom:1px solid transparent;transition:border-color .4s,background .4s;
}
header.scrolled{border-bottom-color:var(--line);background:rgba(7,8,9,.86)}
nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;font-size:18.5px;letter-spacing:-.02em;color:var(--ink)}
.logo-mark{width:28px;height:28px;color:var(--ink);transition:transform .5s var(--ease)}
.logo-mark .core{fill:var(--accent)}
.brand:hover .logo-mark{transform:rotate(60deg)}
.navlinks{display:flex;gap:4px}
.navlinks a{
  position:relative;font-size:14px;color:var(--muted);padding:9px 15px;border-radius:8px;
  transition:color .25s;font-weight:450;
}
.navlinks a:hover,.navlinks a.active{color:var(--ink)}
.navlinks a.active::before{content:"";position:absolute;left:15px;right:15px;bottom:3px;height:1.5px;background:var(--accent);border-radius:2px}
.navbtns{display:flex;gap:10px;align-items:center}
.menu-toggle{display:none;background:none;border:1px solid var(--line-2);border-radius:9px;width:42px;height:40px;color:var(--ink);font-size:18px;cursor:pointer}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 19px;border-radius:10px;
  font-size:14px;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),background .3s,border-color .3s,color .3s;white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#0a0c10;font-weight:600}
.btn-primary:hover{transform:translateY(-1px);background:#fff}
.btn-ghost{border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:#fff;background:var(--accent-soft)}
.btn-link{color:var(--ink);padding:11px 4px;font-weight:500}
.btn-link .arr{transition:transform .3s var(--ease);color:var(--accent)}
.btn-link:hover .arr{transform:translateX(5px)}
.btn-lg{padding:14px 26px;font-size:15px}

/* ---------- type blocks ---------- */
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:22px;
}
h1{font-size:clamp(46px,6.6vw,84px);line-height:1.0;letter-spacing:-.045em;font-weight:600}
h2{font-size:clamp(30px,4vw,48px);line-height:1.05;letter-spacing:-.04em;font-weight:600}
h3{font-size:18.5px;letter-spacing:-.02em;font-weight:600}
.lead{color:var(--muted);font-size:clamp(16px,1.55vw,18.5px);line-height:1.65;max-width:600px;font-weight:400}
.section-head{max-width:720px}
.section-head.center{margin:0 auto;text-align:center}
.section-head.center .lead{margin-left:auto;margin-right:auto}

/* ---------- hero ---------- */
.hero{padding:120px 0 96px;text-align:center}
.pill{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink-2);font-family:var(--mono);
  letter-spacing:.04em;border:1px solid var(--line-2);background:rgba(12,15,21,.6);
  padding:7px 15px;border-radius:100px;margin-bottom:34px;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 9px var(--accent);animation:pulse 2.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero .lead{margin:28px auto 0;font-size:clamp(17px,1.7vw,20px)}
.cta-row{display:flex;gap:14px;justify-content:center;margin-top:42px;flex-wrap:wrap;align-items:center}

/* ---------- capability row (replaces fake stats) ---------- */
.caps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:88px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cap{padding:30px 26px;text-align:left;border-right:1px solid var(--line)}
.cap:last-child{border-right:none}
.cap .k{font-size:15px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.cap .v{font-size:13.5px;color:var(--muted);margin-top:7px;line-height:1.5}
@media(max-width:760px){.caps{grid-template-columns:1fr 1fr}.cap:nth-child(2n){border-right:none}.cap:nth-child(-n+2){border-bottom:1px solid var(--line)}}

/* ---------- sections ---------- */
.s-pad{padding:108px 0}
.s-pad-sm{padding:80px 0}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:1px;margin-top:60px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}
/* "bordered grid" look — cells separated by hairlines */
.cell{position:relative;background:var(--bg);padding:36px 32px;transition:background .4s}
.cell::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%), rgba(142,162,255,.06), transparent 42%);}
.cell:hover{background:var(--bg-1)}
.cell:hover::before{opacity:1}
.cell h3{margin-bottom:0}
.cell p{color:var(--muted);font-size:14.5px;margin-top:11px;line-height:1.62}

/* standalone card (used for GPU specs etc.) */
.card{
  position:relative;border:1px solid var(--line);background:var(--panel);border-radius:16px;
  padding:32px;overflow:hidden;transition:transform .4s var(--ease),border-color .4s;
}
.card::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%), rgba(142,162,255,.07), transparent 42%);}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card:hover::before{opacity:1}
.card.feat{border-color:rgba(142,162,255,.34)}
.flag{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}

/* icon */
.ficon{
  width:46px;height:46px;border-radius:11px;display:grid;place-items:center;margin-bottom:22px;
  border:1px solid var(--line-2);background:var(--panel-2);color:var(--accent);
  transition:border-color .4s,transform .4s var(--ease);
}
.cell:hover .ficon,.card:hover .ficon{border-color:var(--accent);transform:translateY(-2px)}
.ic{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* gpu spec rows */
.gpu-name{font-size:21px;font-weight:600;letter-spacing:-.02em}
.gpu-sub{color:var(--muted);font-size:13.5px;margin:8px 0 24px;min-height:38px}
.spec{display:flex;justify-content:space-between;font-size:13.5px;padding:12px 0;border-top:1px solid var(--line)}
.spec span:first-child{color:var(--muted)}
.spec span:last-child{font-weight:500;color:var(--ink-2)}

/* ---------- band ---------- */
.band{position:relative;border:1px solid var(--line);border-radius:22px;overflow:hidden;
  background:linear-gradient(180deg,rgba(12,15,21,.7),rgba(8,10,14,.7));padding:64px;text-align:center}
.band::before{content:"";position:absolute;inset:0;background:radial-gradient(620px 300px at 50% -10%,rgba(94,116,224,.16),transparent 62%)}
.band>*{position:relative}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:34px}
.chip{font-size:13px;color:var(--ink-2);font-family:var(--mono);letter-spacing:.02em;
  border:1px solid var(--line-2);background:rgba(8,10,14,.6);padding:9px 15px;border-radius:8px;transition:border-color .3s}
.chip:hover{border-color:var(--accent)}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
@media(max-width:880px){.split{grid-template-columns:1fr;gap:40px}}
.visual{position:relative;border:1px solid var(--line);border-radius:18px;height:360px;overflow:hidden;
  background:linear-gradient(160deg,rgba(12,15,21,.8),rgba(8,10,14,.8))}
.rackline{position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.6;animation:sweep 6s linear infinite}
@keyframes sweep{0%{top:-3%;opacity:0}12%{opacity:.7}88%{opacity:.7}100%{top:103%;opacity:0}}
.racks{position:absolute;inset:30px;display:grid;grid-template-columns:repeat(8,1fr);grid-auto-rows:1fr;gap:8px}
.racks i{border-radius:4px;background:rgba(142,162,255,.05);border:1px solid var(--line);animation:blink 4.5s infinite}
.racks i:nth-child(3n){animation-delay:.9s}
.racks i:nth-child(2n){animation-delay:1.8s}
.racks i:nth-child(5n){animation-delay:2.6s}
@keyframes blink{0%,100%{background:rgba(142,162,255,.04)}50%{background:rgba(142,162,255,.14)}}

/* ---------- contact form ---------- */
.form{display:grid;gap:16px;max-width:520px;margin:40px auto 0;text-align:left}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.form .row{grid-template-columns:1fr}}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:8px;font-family:var(--mono);letter-spacing:.04em}
.field input,.field select,.field textarea{
  width:100%;background:var(--panel);border:1px solid var(--line-2);border-radius:10px;
  padding:13px 15px;color:var(--ink);font-family:var(--sans);font-size:14.5px;transition:border-color .3s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:120px}

/* ---------- cta final ---------- */
.cta-final{text-align:center;border:1px solid var(--line);border-radius:24px;overflow:hidden;
  background:linear-gradient(180deg,rgba(12,15,21,.75),rgba(8,10,14,.6));padding:80px 28px;position:relative}
.cta-final::before{content:"";position:absolute;inset:0;background:radial-gradient(560px 280px at 50% -20%,rgba(94,116,224,.16),transparent 60%)}
.cta-final>*{position:relative}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:72px 0 64px;margin-top:120px;color:var(--muted)}
.fgrid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:40px}
@media(max-width:780px){.fgrid{grid-template-columns:1fr 1fr}}
.fcol h4{color:var(--ink-2);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-family:var(--mono);margin-bottom:18px;font-weight:500}
.fcol a{display:block;color:var(--muted);padding:6px 0;font-size:14px;transition:color .25s}
.fcol a:hover{color:var(--ink)}
.fbottom{margin-top:54px;padding-top:28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--muted-2)}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}.reveal.d4{transition-delay:.28s}

/* ---------- inner page hero ---------- */
.page-hero{padding:104px 0 26px;max-width:820px}
.page-hero.center{margin:0 auto;text-align:center}

/* ---------- mobile nav ---------- */
@media(max-width:900px){
  .navlinks{position:fixed;top:76px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(7,8,9,.98);border-bottom:1px solid var(--line);padding:14px 22px 22px;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.28s;backdrop-filter:blur(16px)}
  .navlinks.open{transform:none;opacity:1;pointer-events:auto}
  .navlinks a{padding:14px 8px;font-size:16px}
  .navlinks a.active::before{display:none}
  .menu-toggle{display:block}
  .navbtns .btn-ghost{display:none}
}

/* ============================================================
   ENHANCEMENTS
   ============================================================ */
#scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;
  background:linear-gradient(90deg,#5e74e0,#8ea2ff);box-shadow:0 0 12px rgba(142,162,255,.55)}

.shimmer{background:linear-gradient(100deg,#8ea2ff,#cdd6ff 45%,#8ea2ff);-webkit-background-clip:text;
  background-clip:text;color:transparent;background-size:220% auto;animation:shimmer 7s linear infinite}
@keyframes shimmer{to{background-position:220% center}}

.hero-orb{position:absolute;left:50%;top:60px;width:680px;height:680px;max-width:120vw;
  transform:translateX(-50%);border-radius:50%;pointer-events:none;z-index:-1;
  background:radial-gradient(circle,rgba(94,116,224,.16),transparent 60%);animation:breathe 9s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.65;transform:translateX(-50%) scale(1)}50%{opacity:1;transform:translateX(-50%) scale(1.08)}}

.badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.badge{font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:var(--muted);
  border:1px solid var(--line);border-radius:100px;padding:7px 14px;background:rgba(12,15,21,.5)}

/* tech marquee */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;margin-top:30px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee + .marquee{margin-top:0;border-top:none}
.marquee-track{display:flex;gap:52px;width:max-content;animation:marq 36s linear infinite}
.marquee.rev .marquee-track{animation-direction:reverse}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{font-family:var(--mono);font-size:14px;letter-spacing:.03em;color:var(--muted);white-space:nowrap;display:inline-flex;align-items:center;gap:11px}
.marquee-track span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.55}
@keyframes marq{to{transform:translateX(-50%)}}

/* steps */
.step-num{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--accent);margin-bottom:16px}

/* comparison */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:54px}
.compare .col{background:var(--bg);padding:38px 34px}
.compare .col.hi{background:var(--bg-1)}
.compare .col h3{margin-bottom:22px;font-size:17px}
.compare .col .tag-soft{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2)}
.compare .col.hi .tag-soft{color:var(--accent)}
.compare ul{list-style:none;display:grid;gap:15px}
.compare li{display:flex;gap:13px;font-size:14.5px;color:var(--ink-2);align-items:flex-start;line-height:1.5}
.compare li .ck{flex:none;width:18px;height:18px;margin-top:1px;color:var(--accent)}
.compare li.no{color:var(--muted)}
.compare li.no .ck{color:var(--muted-2)}
@media(max-width:720px){.compare{grid-template-columns:1fr}}

/* FAQ */
.faq{max-width:860px;margin:54px auto 0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--ink);font-family:var(--sans);
  font-size:17px;font-weight:500;letter-spacing:-.02em;padding:24px 48px 24px 0;cursor:pointer;position:relative}
.faq-q::after{content:"";position:absolute;right:8px;top:50%;width:13px;height:13px;margin-top:-7px;
  background:
   linear-gradient(var(--accent),var(--accent)) center/13px 1.5px no-repeat,
   linear-gradient(var(--accent),var(--accent)) center/1.5px 13px no-repeat;
  transition:transform .35s var(--ease)}
.faq-item.open .faq-q::after{transform:rotate(135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a p{color:var(--muted);font-size:15px;line-height:1.7;padding:0 48px 26px 0;margin:0}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:start;margin-top:8px}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;gap:40px}}

.panel{border:1px solid var(--line-2);border-radius:20px;padding:36px;
  background:linear-gradient(180deg,rgba(14,18,26,.72),rgba(10,13,19,.6));position:relative;overflow:hidden}
.panel::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 200px at 80% -10%,rgba(94,116,224,.12),transparent 60%);pointer-events:none}
.panel>*{position:relative}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.panel-head .dotk{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.panel-head h3{font-size:18px}
.panel-sub{color:var(--muted);font-size:14px;margin:0 0 26px}

.info-list{list-style:none;display:grid;gap:22px;margin-top:30px}
.info-list li{display:flex;gap:15px;align-items:flex-start}
.info-list .n{width:34px;height:34px;border:1px solid var(--line-2);border-radius:9px;display:grid;place-items:center;
  color:var(--accent);flex:none;font-family:var(--mono);font-size:12.5px;background:var(--panel-2)}
.info-list .t{font-size:15px;font-weight:500;color:var(--ink);letter-spacing:-.01em}
.info-list p{font-size:13.5px;color:var(--muted);margin:4px 0 0;line-height:1.55}

.contact-direct{margin-top:34px;padding-top:28px;border-top:1px solid var(--line);display:grid;gap:8px}
.contact-direct .row2{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2)}
.contact-direct .row2 svg{width:17px;height:17px;stroke:var(--accent);fill:none;stroke-width:1.5}
.contact-direct a{color:var(--accent)}

/* form refinements */
.panel .form{margin:0;max-width:none}
.field{display:flex;flex-direction:column}
.field label .req{color:var(--accent);margin-left:3px}
.field input,.field select,.field textarea{min-height:48px;padding:14px 15px;border-radius:11px;background:var(--bg-1)}
.field textarea{min-height:130px}
.field input:focus,.field select:focus,.field textarea:focus{box-shadow:0 0 0 3px rgba(142,162,255,.14)}
.panel .form .btn-primary{width:100%;justify-content:center;margin-top:4px}
.form-note{font-size:12.5px;color:var(--muted-2);font-family:var(--mono);letter-spacing:.03em;margin-top:2px;text-align:center}