:root{
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --ink:#0a1330;
  --ink-2:#1a2240;
  --muted:#5b6580;
  --line:#e6e9f2;
  --brand:#1e5bff;
  --brand-2:#0b7ce8;
  --brand-grad:linear-gradient(135deg,#0b7ce8 0%,#1e5bff 100%);
  --dark:#06091a;
  --dark-2:#0c1230;
  --on-dark-muted:#8a93b0;
  --radius:14px;
  --container:1240px;
  --easing:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Pretendard','Pretendard Variable',-apple-system,BlinkMacSystemFont,'Segoe UI',Inter,'Helvetica Neue',Arial,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  word-break:keep-all;
}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}

.container{max-width:var(--container);margin:0 auto;padding:0 28px}

/* nav */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--easing),background .25s var(--easing);
}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.92)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}
.brand img{width:28px;height:28px}
.brand span{font-size:18px}
.brand .brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em}
.brand .brand-reading{
  font-size:12px;
  color:#9aa3bb;
  font-weight:500;
  letter-spacing:-.01em;
  margin-left:2px;
}
@media (max-width:640px){.brand .brand-reading{display:none}}
.nav__links{display:flex;align-items:center;gap:32px}
.nav__links a{font-size:14.5px;color:var(--ink-2);font-weight:500;transition:color .2s}
.nav__links a:hover{color:var(--brand)}
.lang-toggle{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:12.5px}
.lang-toggle a{padding:6px 12px;color:var(--muted);font-weight:600}
.lang-toggle a.is-active{background:var(--ink);color:#fff}

/* hamburger toggle */
.nav__toggle{
  display:none;
  width:48px;height:48px;
  background:none;border:0;padding:0;
  cursor:pointer;align-items:center;justify-content:center;
  flex-direction:column;gap:6px;border-radius:8px;
  transition:background .2s;
}
.nav__toggle:hover{background:var(--bg-soft)}
.nav__toggle span{
  display:block;width:26px;height:2.5px;
  background:var(--ink);border-radius:2px;
  transition:transform .25s var(--easing),opacity .15s;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8.5px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8.5px) rotate(-45deg)}

/* mobile overlay menu */
.nav__overlay{
  position:fixed;top:68px;left:0;right:0;bottom:0;
  height:calc(100vh - 68px);
  height:calc(100dvh - 68px);
  background:#fff;
  display:none;flex-direction:column;
  padding:16px 28px 32px;
  overflow-y:auto;z-index:48;
  opacity:0;transition:opacity .2s var(--easing);
  -webkit-overflow-scrolling:touch;
}
.nav__overlay.is-open{display:flex;opacity:1}
.nav__overlay-links{display:flex;flex-direction:column;margin-bottom:24px;flex:1 1 auto}
.nav__overlay-links a{
  display:block;
  font-size:26px;font-weight:700;letter-spacing:-.02em;
  color:var(--ink);
  padding:20px 6px;
  border-bottom:1px solid var(--line);
  line-height:1.2;
}
.nav__overlay-links a:first-child{border-top:1px solid var(--line)}
.nav__overlay-links a.is-active{color:var(--brand)}
.nav__overlay .lang-toggle{align-self:flex-start;font-size:14px}
.nav__overlay .lang-toggle a{padding:10px 16px}
@media (max-height:680px){
  .nav__overlay-links a{font-size:22px;padding:16px 6px}
}
@media (max-height:560px){
  .nav__overlay-links a{font-size:20px;padding:13px 6px}
}

/* hero */
.hero{
  position:relative;
  padding:140px 0 96px;
  background:#fff;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto auto;width:780px;height:780px;
  background:radial-gradient(closest-side, rgba(30,91,255,.18), rgba(30,91,255,0));
  filter:blur(10px);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-10%;bottom:-30%;width:520px;height:520px;
  background:radial-gradient(closest-side, rgba(11,124,232,.14), rgba(11,124,232,0));
  filter:blur(10px);pointer-events:none;
}
.hero__inner{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border:1px solid var(--line);border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:#fff;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(30,91,255,.15)}
.hero h1{
  margin:22px 0 22px;
  font-size:clamp(38px,5.8vw,68px);
  line-height:1.1;letter-spacing:-.025em;font-weight:800;
  color:var(--ink);
  max-width:18ch;
}
html[lang="ko"] .hero h1{max-width:14em}
.hero h1 .grad{
  background:var(--brand-grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  font-size:clamp(16px,1.4vw,19px);
  color:var(--muted);
  max-width:780px;margin:0 0 32px;line-height:1.7;
}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:-.01em;
  transition:transform .2s var(--easing),box-shadow .2s var(--easing),background .2s;
}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--brand);box-shadow:0 8px 24px rgba(30,91,255,.28)}
.btn--ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--ink)}
.btn .arrow{transition:transform .2s var(--easing)}
.btn:hover .arrow{transform:translateX(3px)}

/* sections */
section{padding:96px 0;position:relative}
section.dark{background:var(--dark);color:#fff}
section.soft{background:var(--bg-soft)}
.section-head{max-width:980px;margin:0 0 44px}
.section-head .kicker{
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:12px;
}
section.dark .section-head .kicker{color:#7aa6ff}
.section-head h2{
  margin:0 0 14px;
  font-size:clamp(28px,3.4vw,44px);line-height:1.15;letter-spacing:-.02em;font-weight:800;
}
.section-head p{
  font-size:clamp(15.5px,1.2vw,17.5px);color:var(--muted);max-width:860px;margin:0;line-height:1.75;
}
section.dark .section-head p{color:var(--on-dark-muted)}

/* feature grid */
.grid{display:grid;gap:20px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.card{
  padding:28px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  transition:transform .25s var(--easing),box-shadow .25s var(--easing),border-color .25s;
}
.card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -20px rgba(10,19,48,.18);border-color:#cfd6ea}
section.dark .card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.08);color:#fff}
section.dark .card:hover{background:rgba(255,255,255,.06);border-color:rgba(122,166,255,.3);box-shadow:0 18px 40px -20px rgba(30,91,255,.45)}
.card h3{margin:0 0 10px;font-size:20px;letter-spacing:-.01em;font-weight:700;line-height:1.3}
.card p{margin:0;color:var(--muted);font-size:15px;line-height:1.6}
section.dark .card p{color:var(--on-dark-muted)}
.card .num{
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.5px;color:var(--brand);font-weight:700;letter-spacing:.06em;margin-bottom:14px;display:block;
}
section.dark .card .num{color:#7aa6ff}

/* tech section split — now single column, text-focused */
.split{max-width:920px}
.split h3{font-size:clamp(24px,2.4vw,32px);line-height:1.25;letter-spacing:-.02em;margin:0 0 16px;font-weight:800}
.split p{color:var(--on-dark-muted);font-size:17px;margin:0 0 16px;line-height:1.75;max-width:820px}
.diagram{
  aspect-ratio:1/1;border-radius:24px;
  background:
    radial-gradient(circle at 30% 30%,rgba(30,91,255,.45),transparent 55%),
    radial-gradient(circle at 70% 70%,rgba(11,124,232,.35),transparent 55%),
    linear-gradient(135deg,#0a1330,#1a2240);
  border:1px solid rgba(255,255,255,.08);position:relative;overflow:hidden;
}
.diagram svg{width:100%;height:100%}

/* track record stat band */
.stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  padding:36px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  margin-top:36px;
}
.stat .v{font-size:clamp(30px,3.4vw,46px);line-height:1.05;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.stat .v .grad{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.5}

/* team / locations */
.locations{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.location{
  padding:28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);
}
.location .tag{
  font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);margin-bottom:12px;
}
.location h4{margin:0 0 6px;font-size:19px;letter-spacing:-.01em;font-weight:700}
.location p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.6}

/* contact */
.contact-band{
  border-radius:20px;
  padding:56px 44px;
  background:linear-gradient(135deg,#06091a 0%,#0c1230 100%);
  color:#fff;
  position:relative;overflow:hidden;
}
.contact-band::before{
  content:"";position:absolute;right:-10%;top:-30%;width:560px;height:560px;
  background:radial-gradient(closest-side,rgba(30,91,255,.35),rgba(30,91,255,0));pointer-events:none;
}
.contact-band h2{font-size:clamp(26px,3vw,38px);line-height:1.15;letter-spacing:-.02em;margin:0 0 12px;font-weight:800}
.contact-band p{color:var(--on-dark-muted);margin:0 0 22px;font-size:16px;max-width:680px;line-height:1.7}
.email-pill{
  display:inline-flex;align-items:center;gap:10px;padding:14px 22px;
  border-radius:999px;background:#fff;color:var(--ink);font-weight:700;
  transition:transform .2s var(--easing),box-shadow .2s var(--easing);
}
.email-pill:hover{transform:translateY(-2px);box-shadow:0 16px 40px -10px rgba(30,91,255,.45)}

/* footer */
footer{padding:48px 0 64px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.foot .brand span{color:var(--ink)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--easing),transform .8s var(--easing)}
.reveal.in{opacity:1;transform:none}

@media (max-width:920px){
  section{padding:72px 0}
  .hero{padding:110px 0 64px}
  .grid--3{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .stats{grid-template-columns:1fr;padding:28px}
  .locations{grid-template-columns:1fr}
  .contact-band{padding:40px 24px;border-radius:16px}
  .nav__links{display:none}
  .nav__inner > .lang-toggle{display:none}
  .nav__toggle{display:flex}
  .section-head{margin-bottom:32px}
  .hero h1{font-size:clamp(30px,8.4vw,52px);max-width:none}
  html[lang="ko"] .hero h1{max-width:none}
  .section-head h2{font-size:clamp(24px,6.4vw,36px)}
  .split h3{font-size:clamp(22px,5.4vw,28px)}
  .stat .v{font-size:clamp(28px,7vw,38px)}
  .contact-band h2{font-size:clamp(22px,5.6vw,30px)}
  .btn{padding:13px 20px;font-size:14.5px}
  .cta-row{gap:10px}
}
@media (max-width:400px){
  .container{padding:0 20px}
  .hero{padding:96px 0 56px}
  section{padding:60px 0}
  .card{padding:22px}
  .location{padding:22px}
  .stats{padding:24px}
}