:root{--navy:#081426;--navy2:#12294a;--blue:#315fd6;--cyan:#16b8a6;--violet:#6b5dd3;--gold:#b89457;--ink:#15243a;--muted:#5e6d80;--line:#dbe2eb;--bg:#f5f7fb;--soft:#eef3f8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,'Noto Sans KR',system-ui,sans-serif;color:var(--ink);background:#fff}a{text-decoration:none;color:inherit}.w{max-width:1180px;margin:auto;padding:0 28px}.site-head{position:sticky;top:0;z-index:30;background:rgba(7,24,45,.96);color:#fff;backdrop-filter:blur(14px);box-shadow:0 10px 28px #00152d22}.nav{height:76px;display:flex;align-items:center;gap:22px}.brand{display:flex;background:#fff;border-radius:10px;padding:6px 9px}.brand img{height:40px}.navlinks{margin-left:auto;display:flex;align-items:center;gap:19px}.navlinks a{font-size:13px;font-weight:700;color:#dce7f0}.navlinks a:hover{color:#7ce7f0}.navcta{padding:11px 15px;border-radius:10px;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff!important}.lang{display:flex;border:1px solid #ffffff35;border-radius:999px;padding:3px}.lang a{padding:5px 9px;border-radius:999px;color:#ffffffaa;font-size:11px;font-weight:800}.lang .on{background:#fff;color:var(--navy)}.hero{padding:92px 0 78px;background:radial-gradient(circle at 82% 18%,#18bfd02a,transparent 30%),linear-gradient(135deg,#061426,#0a3159 65%,#076078);color:#fff}.eyebrow,.kicker{font-size:11px;letter-spacing:.16em;font-weight:850}.eyebrow{color:#7ce7f0}.hero h1{font-size:52px;line-height:1.08;letter-spacing:-.045em;margin:18px 0}.hero p{max-width:820px;color:#d4e0ea;font-size:18px;line-height:1.75}.hero .pillrow{display:flex;gap:9px;flex-wrap:wrap;margin-top:25px}.pill{display:inline-flex;padding:8px 11px;border-radius:999px;background:#ffffff12;border:1px solid #ffffff20;font-size:11px;font-weight:800;color:#d8f8fb}.section{padding:78px 0}.section.alt{background:var(--bg)}.kicker{color:var(--blue)}h2{font-size:38px;line-height:1.2;letter-spacing:-.035em;margin:12px 0 16px}.intro{max-width:880px;color:var(--muted);font-size:16px;line-height:1.8}.grid2,.grid3,.grid4{display:grid;gap:20px;margin-top:34px}.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{border:1px solid var(--line);border-radius:20px;background:#fff;padding:24px;box-shadow:0 14px 40px #0f233c0d}.card small{display:block;color:var(--blue);font-size:10px;font-weight:850;letter-spacing:.08em}.card h3{margin:10px 0 10px;font-size:20px;line-height:1.32}.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.72}.status{display:inline-flex;margin-top:15px;padding:6px 9px;border-radius:999px;background:#eaf4ff;color:#1769e0;font-size:10px;font-weight:850}.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:34px}.step{position:relative;border:1px solid var(--line);border-radius:18px;background:#fff;padding:22px;min-height:170px}.step b{display:block;color:var(--blue);font-size:11px;margin-bottom:9px}.step h3{font-size:18px;margin:0 0 8px}.step p{font-size:13px;line-height:1.6;color:var(--muted);margin:0}.step:not(:last-child):after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--cyan);font-weight:900;z-index:2}.architecture{margin-top:32px;border:1px solid #ffffff24;background:linear-gradient(145deg,#07182d,#0b3a68);border-radius:22px;padding:26px;color:#fff}.archgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.archgrid>div{padding:18px;border:1px solid #ffffff18;border-radius:14px;background:#ffffff09}.archgrid small{color:#7ce7f0;font-weight:800}.archgrid h3{margin:8px 0 6px;font-size:18px}.archgrid p{margin:0;color:#bfd0dc;font-size:13px;line-height:1.6}.note{margin-top:22px;padding:14px 16px;border-left:3px solid var(--cyan);background:#eefafa;color:#52677d;font-size:12px;line-height:1.7}.cta{padding:70px 0;background:linear-gradient(135deg,#0a2e54,#066a7b);color:#fff}.cta h2{margin-top:0}.cta p{color:#d6e7ee;max-width:760px;line-height:1.75}.buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:10px;font-weight:800;font-size:13px}.btn.primary{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff}.btn.secondary{border:1px solid #ffffff55;color:#fff}.footer{background:#061426;color:#9db1c4;padding:30px 0}.footer .w{display:flex;justify-content:space-between;gap:20px;font-size:12px}.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px}.milestone{padding:22px;border-radius:18px;border:1px solid var(--line);background:#fff}.milestone .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));margin-bottom:13px}.milestone small{color:var(--blue);font-weight:850}.milestone h3{margin:8px 0;font-size:17px}.milestone p{color:var(--muted);font-size:13px;line-height:1.55;margin:0}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}.list{display:grid;gap:12px;margin-top:22px}.list div{padding:14px 16px;border:1px solid var(--line);border-radius:13px;background:#fff}.list b{display:block;margin-bottom:4px}.list span{font-size:13px;color:var(--muted);line-height:1.55}.tagrow{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.tag{padding:7px 10px;border-radius:999px;background:#eef6ff;color:#1769e0;font-size:10px;font-weight:850}@media(max-width:900px){.navlinks{display:none}.hero h1{font-size:42px}.grid3,.grid4,.flow,.timeline{grid-template-columns:1fr 1fr}.split,.archgrid{grid-template-columns:1fr}.step:nth-child(2):after{display:none}}@media(max-width:560px){.w{padding:0 18px}.nav{height:66px}.brand img{height:34px}.hero{padding:72px 0 58px}.hero h1{font-size:34px}.hero p{font-size:16px}.section{padding:62px 0}h2{font-size:30px}.grid2,.grid3,.grid4,.flow,.timeline{grid-template-columns:1fr}.step:after{display:none}.footer .w{flex-direction:column}}

/* Phase 3 — productization & conversion */
.product-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px;padding-top:15px;border-top:1px solid var(--line)}
.product-link{display:inline-flex;align-items:center;justify-content:center;padding:9px 11px;border-radius:9px;border:1px solid var(--line);font-size:11px;font-weight:800;color:var(--blue);background:#fff}
.product-link:hover{border-color:#9ec7ef;background:#f7fbff}
.product-link.primary-link{border-color:transparent;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff}
.productization{background:#fff}
.engagement-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px}
.engagement-card{position:relative;border:1px solid var(--line);border-radius:20px;padding:24px;background:#fff;box-shadow:0 14px 40px #0f233c0d}
.engagement-card.featured{border-color:#8fc5ef;box-shadow:0 18px 48px #1769e018}
.engagement-card>span{display:block;color:var(--blue);font-size:10px;font-weight:850;letter-spacing:.08em}
.engagement-card h3{font-size:19px;line-height:1.35;margin:10px 0 9px}
.engagement-card p{color:var(--muted);font-size:13px;line-height:1.65;margin:0}
.engagement-card ul{padding-left:18px;margin:15px 0 18px;color:#52677d;font-size:12px;line-height:1.7}
.engagement-card a{font-size:12px;font-weight:850;color:var(--blue)}
.commercial-note{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;margin-top:20px;padding:15px 17px;border-left:3px solid var(--cyan);background:#f2fbfc;border-radius:0 12px 12px 0}
.commercial-note b{font-size:12px;color:var(--ink)}
.commercial-note span{font-size:12px;line-height:1.65;color:#5d7185}
@media(max-width:900px){.engagement-grid{grid-template-columns:1fr}.commercial-note{grid-template-columns:1fr}}


/* Phase 3 premium subpage palette */
body{background:#fbfcfe}
.site-head{
  background:rgba(8,20,38,.95);
  border-bottom:1px solid rgba(168,181,207,.13);
  box-shadow:0 10px 34px rgba(6,17,34,.19);
}
.navcta{
  background:linear-gradient(100deg,#315fd6 0%,#4668d7 44%,#16b8a6 100%);
  box-shadow:0 10px 26px rgba(49,95,214,.18);
}
.navlinks a:hover{color:#91ddd4}
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 84% 16%,rgba(22,184,166,.22),transparent 27%),
    radial-gradient(circle at 66% 86%,rgba(107,93,211,.20),transparent 30%),
    radial-gradient(circle at 14% 10%,rgba(49,95,214,.18),transparent 24%),
    linear-gradient(135deg,#071426 0%,#102544 52%,#17345a 76%,#124a53 100%);
}
.hero:after{
  content:"";
  position:absolute;
  width:360px;
  height:360px;
  right:-110px;
  bottom:-190px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(184,148,87,.12),transparent 68%);
  pointer-events:none;
}
.hero>.w{position:relative;z-index:1}
.eyebrow{color:#9ce5dc}
.pill{
  background:rgba(255,255,255,.07);
  border-color:rgba(255,255,255,.16);
  color:#e2f0f2;
}
.section.alt{
  background:
    radial-gradient(circle at 92% 6%,rgba(107,93,211,.045),transparent 23%),
    linear-gradient(180deg,#f7f9fc,#f3f6fa);
}
.kicker{color:#4966c5}
.card{
  position:relative;
  border-color:#dce3ec;
  box-shadow:0 16px 42px rgba(25,45,78,.07);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{
  transform:translateY(-3px);
  border-color:#cbd6e3;
  box-shadow:0 22px 54px rgba(25,45,78,.11);
}
.grid2>.card:nth-child(4n+1),.grid4>.card:nth-child(4n+1){border-top:3px solid #315fd6}
.grid2>.card:nth-child(4n+2),.grid4>.card:nth-child(4n+2){border-top:3px solid #6b5dd3}
.grid2>.card:nth-child(4n+3),.grid4>.card:nth-child(4n+3){border-top:3px solid #16b8a6}
.grid2>.card:nth-child(4n+4),.grid4>.card:nth-child(4n+4){border-top:3px solid #b89457}
.status{
  background:#eef2fb;
  color:#425aa6;
}
.product-link.primary-link,.btn.primary{
  background:linear-gradient(100deg,#315fd6,#4668d7 45%,#16b8a6);
}
.product-link.primary-link{box-shadow:0 8px 20px rgba(49,95,214,.14)}
.engagement-card{
  border-color:#dce3ec;
  box-shadow:0 16px 42px rgba(25,45,78,.065);
}
.engagement-card:nth-child(1){border-top:3px solid #315fd6}
.engagement-card:nth-child(2){border-top:3px solid #6b5dd3}
.engagement-card:nth-child(3){border-top:3px solid #16b8a6}
.engagement-card.featured{
  border-color:#c9c4ef;
  box-shadow:0 20px 52px rgba(107,93,211,.13);
  background:linear-gradient(180deg,#fff,#fbfaff);
}
.commercial-note{
  border-left-color:#b89457;
  background:#fbf8f1;
}
.flow .step:nth-child(1){border-top:3px solid #315fd6}
.flow .step:nth-child(2){border-top:3px solid #6b5dd3}
.flow .step:nth-child(3){border-top:3px solid #16b8a6}
.flow .step:nth-child(4){border-top:3px solid #b89457}
.cta{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 84% 18%,rgba(22,184,166,.17),transparent 25%),
    radial-gradient(circle at 18% 86%,rgba(107,93,211,.22),transparent 30%),
    linear-gradient(135deg,#081426 0%,#172744 48%,#2a315a 72%,#124c53 100%);
}
.footer{
  background:linear-gradient(135deg,#07111f,#0d1c31 58%,#15233c);
  border-top:1px solid rgba(255,255,255,.06);
}


/* Phase 3.1 adaptive subpages */
html,body{overflow-x:hidden}
img,svg{max-width:100%;height:auto}
.w{width:100%;padding-left:clamp(18px,3vw,28px);padding-right:clamp(18px,3vw,28px)}
.hero h1{font-size:clamp(36px,5vw,52px)}
h2{font-size:clamp(29px,3.6vw,38px)}
.section{padding-top:clamp(62px,7vw,78px);padding-bottom:clamp(62px,7vw,78px)}
.card,.engagement-card,.step{min-width:0}
.btn,.product-link,.navcta{min-height:44px}
.navlinks{min-width:0}

/* richer subpage surfaces */
.section:not(.alt){
  background:
    radial-gradient(circle at 94% 4%,rgba(24,169,149,.028),transparent 21%),
    linear-gradient(180deg,#ffffff,#fbfcfe);
}
.hero .pill:nth-child(1){border-color:rgba(49,95,214,.42)}
.hero .pill:nth-child(2){border-color:rgba(102,89,199,.42)}
.hero .pill:nth-child(3){border-color:rgba(24,169,149,.42)}
.hero .pill:nth-child(4){border-color:rgba(184,149,90,.42)}
.card small{color:#4b64bd}
.tag:nth-child(4n+1){background:#eef2ff;color:#4860b5}
.tag:nth-child(4n+2){background:#f2efff;color:#6557b5}
.tag:nth-child(4n+3){background:#eaf8f5;color:#188c7d}
.tag:nth-child(4n+4){background:#faf5e9;color:#8c6c38}

/* Mobile/tablet navigation becomes adaptive rather than disappearing */
@media(max-width:900px){
  .site-head{position:sticky;top:0}
  .nav{
    height:auto;
    min-height:68px;
    flex-wrap:wrap;
    gap:10px 14px;
    padding-top:10px;
    padding-bottom:10px;
  }
  .brand{padding:5px 7px}
  .brand img{height:34px}
  .lang{margin-left:auto}
  .navlinks{
    display:flex;
    order:3;
    width:100%;
    margin-left:0;
    gap:7px;
    overflow-x:auto;
    overscroll-behavior-inline:contain;
    scrollbar-width:none;
    padding:2px 0 1px;
  }
  .navlinks::-webkit-scrollbar{display:none}
  .navlinks a{
    flex:0 0 auto;
    white-space:nowrap;
    padding:8px 10px;
    border:1px solid rgba(255,255,255,.10);
    border-radius:999px;
    background:rgba(255,255,255,.045);
    font-size:11px;
  }
  .navlinks .navcta{
    padding:8px 12px;
    border-color:transparent;
  }
  .hero{padding-top:68px;padding-bottom:60px}
  .grid2,.grid3,.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .engagement-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:after{display:none}
}
@media(max-width:640px){
  .nav{padding-left:0;padding-right:0}
  .hero{padding-top:58px;padding-bottom:54px}
  .hero h1{font-size:clamp(32px,9.5vw,40px)}
  .hero p{font-size:15px;line-height:1.68}
  .hero .pillrow{gap:7px;margin-top:20px}
  .pill{font-size:10px;padding:7px 9px}
  .grid2,.grid3,.grid4,.flow,.timeline{grid-template-columns:1fr}
  .card,.engagement-card,.step{padding:20px}
  .buttons{display:grid;grid-template-columns:1fr;width:100%}
  .buttons .btn{width:100%}
  .product-actions{display:grid;grid-template-columns:1fr}
  .product-link{width:100%}
  .commercial-note{grid-template-columns:1fr}
  .footer .w{gap:10px}
}
@media(max-width:420px){
  .w{padding-left:15px;padding-right:15px}
  .navlinks a{font-size:10.5px;padding:7px 9px}
  .hero{padding-top:52px}
  .hero h1{font-size:clamp(30px,9.8vw,35px)}
  .section{padding-top:56px;padding-bottom:56px}
  .card,.engagement-card,.step{padding:18px;border-radius:17px}
  .footer{padding:25px 0}
}