:root{
  --bg:#ffffff; --bg-alt:#f6f7fb; --ink:#0f172a; --ink-2:#334155; --muted:#64748b;
  --line:#e2e8f0; --brand:#4f46e5; --brand-2:#0ea5e9; --brand-ink:#3730a3;
  --radius:16px; --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
img{max-width:100%}
a{color:var(--brand)}
a:hover{color:var(--brand-ink)}
:focus-visible{outline:3px solid var(--brand-2);outline-offset:2px;border-radius:6px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:19px;letter-spacing:-.01em}
.nav nav{display:flex;align-items:center;gap:22px}
.nav nav a{color:var(--ink-2);text-decoration:none;font-size:15px;font-weight:500}
.nav nav a:hover{color:var(--ink)}
.nav-cta{background:var(--ink);color:#fff!important;padding:8px 14px;border-radius:999px}
.nav-cta:hover{background:#1e293b}

/* hero */
.hero{position:relative;overflow:hidden;padding:104px 0 96px;background:
  radial-gradient(900px 420px at 85% -10%,rgba(14,165,233,.16),transparent 60%),
  radial-gradient(800px 420px at 0% 0%,rgba(79,70,229,.14),transparent 60%),var(--bg)}
.eyebrow{display:inline-block;margin:0 0 20px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;font-weight:600;color:var(--ink-2)}
.hero h1{font-size:clamp(36px,6vw,64px);line-height:1.06;letter-spacing:-.03em;margin:0 0 22px;max-width:16ch}
.lede{font-size:clamp(17px,2.1vw,20px);color:var(--ink-2);max-width:62ch;margin:0 0 10px}
.lede.ko,.ko{color:var(--muted);word-break:keep-all}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:12px;font-weight:600;text-decoration:none;font-size:15px;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--brand),#6366f1 55%,var(--brand-2));color:#fff}
.btn-primary:hover{color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-lg{padding:16px 26px;font-size:17px}

/* sections */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{margin:0 0 10px;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand)}
h2{font-size:clamp(28px,3.6vw,40px);line-height:1.15;letter-spacing:-.02em;margin:0 0 18px}
.page-title{font-size:clamp(30px,4vw,44px);letter-spacing:-.02em;margin:0 0 12px;line-height:1.15}
.section-lede{color:var(--ink-2);font-size:17px;max-width:70ch;margin:0 0 28px}
.two-col{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.prose p{color:var(--ink-2);margin:0 0 16px;font-size:17px}
.facts{list-style:none;padding:0;margin:26px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.facts li{background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-weight:600;font-size:15px}
.facts span{display:block;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:12px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.feature h3{margin:0 0 8px;font-size:18px}
.feature p{margin:0;color:var(--ink-2)}

/* products */
.group{margin-top:40px}
.group h3{font-size:20px;margin:0 0 16px;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.group h3 .ko{font-size:14px;font-weight:500}
.apps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.app{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:box-shadow .2s ease,border-color .2s ease}
.app:hover{box-shadow:var(--shadow);border-color:#cbd5e1}
.app-top{display:flex;gap:12px;align-items:center}
.app h4{margin:0;font-size:16px;line-height:1.3}
.pkg{margin:2px 0 0;font-size:12px;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;word-break:break-all}
.app-icon{flex:none;width:40px;height:40px;border-radius:11px;display:grid;place-items:center}
.app-icon svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.app-icon--docs{background:linear-gradient(135deg,#4f46e5,#7c3aed)}
.app-icon--files{background:linear-gradient(135deg,#0284c7,#0ea5e9)}
.app-icon--util{background:linear-gradient(135deg,#0f766e,#14b8a6)}
.app-desc{color:var(--ink-2);font-size:14.5px;margin:12px 0 14px;flex:1}
.app-links{display:flex;gap:14px;font-size:14px;font-weight:600}
.app-links a{text-decoration:none}
.app-links a:last-child{color:var(--muted)}

/* building */
.building{background:linear-gradient(180deg,#0f172a,#111c3a);color:#e2e8f0}
.building h2{color:#fff}
.building .kicker{color:#7dd3fc}
.building .prose p{color:#cbd5e1}
.building .note{display:inline-block;margin-top:6px;padding:6px 12px;border-radius:999px;background:rgba(125,211,252,.12);color:#bae6fd;font-size:13px;font-weight:600}
.roadmap{list-style:none;padding:0;margin:4px 0 20px;display:grid;gap:10px}
.roadmap li{padding:14px 16px;border:1px solid rgba(148,163,184,.25);border-radius:12px;background:rgba(255,255,255,.03);color:#cbd5e1}
.roadmap strong{color:#fff}

/* contact */
.contact-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;background:var(--bg-alt);border:1px solid var(--line);border-radius:24px;padding:44px}
.contact-inner .section-lede{margin-bottom:6px}
.contact-inner .ko{margin:0}

/* privacy list */
.policy-list{list-style:none;padding:0;margin:0 0 28px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.policy-list li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;padding:14px 18px;border-top:1px solid var(--line)}
.policy-list li:first-child{border-top:0}
.policy-list a{font-weight:600;text-decoration:none}
.muted{color:var(--muted)}

/* footer */
.footer{border-top:1px solid var(--line);padding:28px 0;font-size:14px;color:var(--muted)}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer nav{display:flex;gap:20px;flex-wrap:wrap}
.footer a{color:var(--ink-2);text-decoration:none}
.footer a:hover{color:var(--ink)}

@media (max-width:900px){
  .two-col{grid-template-columns:1fr;gap:20px}
  .grid3{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr}
}
@media (max-width:680px){
  .nav nav a:not(.nav-cta){display:none}
  .hero{padding:72px 0 64px}
  .section{padding:64px 0}
  .contact-inner{padding:28px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.app{transition:none}}