/* ============================================================
   KORCARB – shared design system
   Industrial / precision-engineering. Steel grays + blue accent.
   ============================================================ */
:root{
  --ink:#0e141b;
  --ink-2:#161e28;
  --steel:#26323f;
  --paper:#ffffff;
  --mist:#f3f5f7;
  --mist-2:#e9edf1;
  --line:#dde2e7;
  --line-dark:#2a3744;
  --muted:#5d6b78;
  --muted-2:#8b97a3;
  --accent:#2f6fd6;
  --accent-d:#225bbb;
  --accent-soft:#eaf1fb;
  --font-head:'Space Grotesk',system-ui,sans-serif;
  --font-body:'IBM Plex Sans',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  --maxw:1240px;
  --r:4px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:600;letter-spacing:-0.015em;line-height:1.08;margin:0;text-wrap:balance;}
p{margin:0;text-wrap:pretty;}

.container{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.bg-ink{background:var(--ink);color:#dfe5eb;}
.bg-mist{background:var(--mist);}

/* ---- kicker label ---- */
.kicker{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 20px;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--accent);display:inline-block;}
.bg-ink .kicker{color:#6fa3ec;}
.bg-ink .kicker::before{background:#6fa3ec;}

.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:0.16em;text-transform:uppercase;color:var(--muted-2);}

.lead{font-size:20px;color:var(--muted);max-width:60ch;}
.bg-ink .lead{color:#aab6c2;}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:0.06em;
  text-transform:uppercase;font-weight:500;
  padding:15px 26px;border-radius:var(--r);border:1px solid transparent;
  cursor:pointer;transition:.18s ease;white-space:nowrap;
}
.btn .arr{transition:transform .18s ease;}
.btn:hover .arr{transform:translateX(4px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-d);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);}
.bg-ink .btn-ghost{color:#fff;border-color:#3a4856;}
.bg-ink .btn-ghost:hover{border-color:#fff;}

/* ============================== NAV ============================== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:13px;}
.brand .mark{width:34px;height:34px;border-radius:5px;background:var(--ink);color:#fff;display:grid;place-items:center;font-family:var(--font-head);font-weight:700;font-size:18px;position:relative;overflow:hidden;}
.brand .mark::after{content:"";position:absolute;inset:auto 0 0 0;height:5px;background:var(--accent);}
.brand .name{font-family:var(--font-head);font-weight:700;font-size:21px;letter-spacing:-0.01em;line-height:1;}
.brand .tag{font-family:var(--font-mono);font-size:9.5px;letter-spacing:0.22em;color:var(--muted-2);text-transform:uppercase;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{font-size:14.5px;font-weight:500;padding:9px 15px;border-radius:var(--r);color:var(--steel);transition:.15s;position:relative;}
.nav-links a:hover{color:var(--ink);background:var(--mist);}
.nav-links a.active{color:var(--accent);}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-tel{font-family:var(--font-mono);font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.nav-tel b{color:var(--ink);font-weight:600;}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.burger span{width:24px;height:2px;background:var(--ink);transition:.2s;}
@media(max-width:980px){
  .nav-links,.nav-tel{display:none;}
  .burger{display:flex;}
  .nav-links.open{display:flex;position:fixed;top:74px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;gap:2px;z-index:49;box-shadow:0 8px 24px -4px rgba(0,0,0,.12);}
  .nav-links.open a{padding:13px 12px;border-radius:var(--r);}
}
@media(max-width:600px){
  .nav-cta .btn-accent{display:none;}
}

/* ============================== HERO ============================== */
.hero{position:relative;min-height:640px;display:flex;align-items:flex-end;color:#fff;overflow:hidden;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(10,16,22,.94) 0%,rgba(10,16,22,.78) 38%,rgba(10,16,22,.34) 100%);}
.hero-grid{position:absolute;inset:0;z-index:1;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(90deg,#000,transparent 70%);}
.hero-inner{position:relative;z-index:2;padding:80px 0 72px;width:100%;}
.hero h1{font-size:clamp(40px,6vw,76px);font-weight:700;letter-spacing:-0.03em;max-width:16ch;}
.hero .lead{color:#c4cdd6;margin-top:26px;font-size:21px;}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap;}

/* page header (interior pages) */
.pagehead{position:relative;color:#fff;overflow:hidden;background:var(--ink);}
.pagehead-bg{position:absolute;inset:0;}
.pagehead-bg img{width:100%;height:100%;object-fit:cover;opacity:.42;}
.pagehead-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,20,27,.5),rgba(14,20,27,.85));}
.pagehead-inner{position:relative;z-index:2;padding:108px 0 64px;}
.pagehead h1{font-size:clamp(36px,5vw,60px);font-weight:700;letter-spacing:-0.02em;}
.pagehead p{color:#aeb9c4;margin-top:18px;max-width:62ch;font-size:19px;}
.crumbs{font-family:var(--font-mono);font-size:12px;letter-spacing:0.1em;text-transform:uppercase;color:#7d8a97;margin-bottom:22px;display:flex;gap:10px;align-items:center;}
.crumbs a:hover{color:#fff;}

/* ============================== GRID/CARDS ============================== */
.grid{display:grid;gap:24px;}
.g-2{grid-template-columns:repeat(2,1fr);}
.g-3{grid-template-columns:repeat(3,1fr);}
.g-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:980px){.g-3,.g-4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.g-2,.g-3,.g-4{grid-template-columns:1fr;}}

.sec-head{max-width:64ch;margin-bottom:48px;}
.sec-head h2{font-size:clamp(28px,3.6vw,42px);}
.sec-head p{margin-top:16px;color:var(--muted);font-size:18px;}

/* product card */
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:.2s ease;}
.pcard:hover{border-color:var(--accent);box-shadow:0 18px 40px -28px rgba(20,40,80,.5);transform:translateY(-3px);}
.pcard .ph{aspect-ratio:4/3;overflow:hidden;background:var(--mist-2);position:relative;}
.pcard .ph img{width:100%;height:100%;object-fit:cover;transition:.5s ease;}
.pcard:hover .ph img{transform:scale(1.05);}
.pcard .ph .num{position:absolute;top:12px;left:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:#fff;background:rgba(14,20,27,.6);padding:5px 9px;border-radius:3px;backdrop-filter:blur(4px);}
.pcard .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.pcard h3{font-size:21px;}
.pcard .desc{color:var(--muted);font-size:15px;}
.pcard .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:6px;}
.chip{font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--steel);background:var(--mist);border:1px solid var(--line);padding:5px 9px;border-radius:3px;}
.pcard .more{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:8px;margin-top:4px;}

/* feature card */
.fcard{border:1px solid var(--line);border-radius:var(--r);padding:30px 28px;background:#fff;}
.fcard .ico{width:46px;height:46px;border-radius:6px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:20px;}
.fcard h3{font-size:20px;margin-bottom:10px;}
.fcard p{color:var(--muted);font-size:15.5px;}
.bg-ink .fcard{background:var(--ink-2);border-color:var(--line-dark);}
.bg-ink .fcard p{color:#9aa6b2;}
.bg-ink .fcard .ico{background:rgba(47,111,214,.16);color:#7aa9ec;}

/* stat */
.stat .n{font-family:var(--font-head);font-weight:700;font-size:clamp(40px,5vw,58px);letter-spacing:-0.03em;line-height:1;}
.stat .l{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:12px;}
.bg-ink .stat .l{color:#8e9aab;}
.accent-n{color:var(--accent);}

/* spec table */
.spec{width:100%;border-collapse:collapse;font-size:15px;}
.spec td{padding:13px 0;border-bottom:1px solid var(--line);vertical-align:top;}
.spec td:first-child{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);width:42%;padding-right:18px;}
.spec td:last-child{color:var(--ink);font-weight:500;}

/* split media */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split.rev .media{order:2;}
@media(max-width:880px){.split{grid-template-columns:1fr;gap:34px;}.split.rev .media{order:0;}}
.media-frame{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);aspect-ratio:5/4;background:var(--mist-2);}
.media-frame img{width:100%;height:100%;object-fit:cover;}

/* numbered process */
.steps{counter-reset:s;display:grid;gap:2px;}
.step{display:grid;grid-template-columns:88px 1fr;gap:24px;padding:26px 0;border-top:1px solid var(--line);align-items:start;}
.step:last-child{border-bottom:1px solid var(--line);}
.step .sn{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.05em;padding-top:4px;}
.step h3{font-size:21px;margin-bottom:8px;}
.step p{color:var(--muted);font-size:16px;}

/* list */
.checks{list-style:none;padding:0;margin:0;display:grid;gap:13px;}
.checks li{display:flex;gap:13px;align-items:flex-start;font-size:16px;color:var(--steel);}
.checks li::before{content:"";flex:none;width:20px;height:20px;margin-top:3px;border-radius:4px;background:var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232f6fd6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;}
.bg-ink .checks li{color:#c2ccd6;}

/* cta band */
.ctaband{position:relative;overflow:hidden;border-radius:var(--r);background:var(--ink);color:#fff;padding:64px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.ctaband .hero-grid{mask-image:linear-gradient(90deg,transparent,#000);}
.ctaband h2{font-size:clamp(28px,3.4vw,40px);position:relative;z-index:2;max-width:18ch;}
.ctaband .r{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============================== FOOTER ============================== */
.footer{background:var(--ink);color:#9aa6b2;padding:72px 0 32px;font-size:15px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-dark);}
@media(max-width:880px){.footer-top{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:560px){.footer-top{grid-template-columns:1fr;}}
.footer .brand .name{color:#fff;}
.footer-blurb{margin-top:20px;max-width:34ch;line-height:1.65;}
.footer h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#6c7986;margin-bottom:18px;font-weight:500;}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.footer ul a:hover{color:#fff;}
.footer .addr{line-height:1.7;color:#aab6c2;}
.footer .addr b{color:#fff;font-weight:600;}
.footer-bot{display:flex;justify-content:space-between;align-items:center;padding-top:26px;flex-wrap:wrap;gap:12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:#6c7986;}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* form */
.form{display:grid;gap:18px;}
.field{display:grid;gap:7px;}
.field label{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);}
.field input,.field select,.field textarea{
  font-family:var(--font-body);font-size:16px;color:var(--ink);
  padding:13px 15px;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:.15s;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
.field.err input,.field.err select,.field.err textarea{border-color:#c0443a;}
.field .msg{font-size:12.5px;color:#c0443a;display:none;}
.field.err .msg{display:block;}
.form-note{font-size:13px;color:var(--muted-2);}
.form-ok{background:var(--accent-soft);border:1px solid #bcd4f4;color:var(--accent-d);padding:16px 18px;border-radius:var(--r);font-size:15px;display:none;}
.form-ok.show{display:block;}