:root{
  --navy:#0f2557;
  --navy-2:#163a8a;
  --brand:#1f6fd4;
  --brand-d:#1b54b3;
  --cyan:#29a8d6;
  --ink:#16243d;
  --muted:#5a6b85;
  --bg-soft:#f4f8fd;
  --line:#e4ecf5;
  --white:#ffffff;
  --grad:linear-gradient(135deg,#163a8a 0%,#1f6fd4 55%,#29a8d6 100%);
  --shadow:0 10px 30px rgba(22,58,138,.10);
  --shadow-lg:0 18px 50px rgba(15,37,87,.16);
  --radius:16px;
  --maxw:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:78px}
body{
  font-family:"Pretendard","Pretendard Variable","Noto Sans KR",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  line-height:1.7;
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.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}

.section{padding:96px 0}
.section.alt{background:var(--bg-soft)}
.eyebrow{
  display:inline-block;font-weight:700;font-size:.9rem;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;line-height:1.25;letter-spacing:-.02em}
.section-head p{margin-top:18px;color:var(--muted);font-size:1.05rem}

.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:.25s;
}
.header.scrolled{box-shadow:0 6px 24px rgba(15,37,87,.08);border-bottom-color:var(--line)}
.header .inner{display:flex;align-items:center;height:72px}
.brand{margin-right:auto;flex:none}
.brand img{height:46px;width:auto}
.nav{display:flex;align-items:center;gap:34px}
.nav a{font-weight:600;font-size:1rem;color:var(--ink);position:relative;padding:6px 0;transition:.2s}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad);transition:.25s}
.nav a:hover,.nav a.active{color:var(--brand)}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav .btn-nav{
  background:var(--grad);color:#fff;padding:10px 22px;border-radius:40px;font-weight:700;
  box-shadow:var(--shadow);
}
.nav .btn-nav::after{display:none}
.nav a.btn-nav,.nav a.btn-nav.active,.nav a.btn-nav:hover{color:#fff}
.nav .btn-nav:hover{transform:translateY(-1px)}
.lang{display:inline-flex;align-items:center;margin-left:30px;flex:none}
.lang a{font-size:.9rem;font-weight:700;color:var(--ink);transition:.2s}
.lang a:hover{color:var(--brand)}
.hamb{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamb span{width:26px;height:2px;background:var(--ink);transition:.3s}

.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;color:#fff;padding:120px 0 96px}
.hero-bg{position:absolute;inset:0;z-index:0;background:#0a1430 url(../images/hero-bg.jpg) center right/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,17,42,.94) 0%,rgba(7,17,42,.80) 36%,rgba(7,17,42,.46) 70%,rgba(7,17,42,.14) 100%)}
.hero .container{position:relative;z-index:2;width:100%}
.hero .lead{font-weight:600;letter-spacing:.04em;color:#9fd8ff;font-size:1.05rem;margin-bottom:14px}
.hero h1{font-size:clamp(2.1rem,5.6vw,3.8rem);font-weight:900;line-height:1.16;letter-spacing:-.02em;max-width:780px;text-shadow:0 2px 24px rgba(0,0,0,.35)}
.hero h1 .hl{color:#74d4ff}
.hero-copy{max-width:600px;margin:22px 0 34px;font-size:1.06rem;line-height:1.85;opacity:.95}
.hero-copy strong{color:#bfe6ff;font-weight:700}
.hero-cta{display:flex;gap:14px;justify-content:flex-start;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:1rem;
  padding:14px 30px;border-radius:44px;transition:.22s;cursor:pointer;border:2px solid transparent;
}
.btn-primary{background:#fff;color:var(--brand-d)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.25)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

.keys{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:-60px;position:relative;z-index:5}
.key-card{
  background:#fff;border-radius:var(--radius);padding:34px 28px;text-align:center;
  box-shadow:var(--shadow-lg);border:1px solid var(--line);transition:.25s;
}
.key-card:hover{transform:translateY(-6px)}
.key-ic{
  width:62px;height:62px;border-radius:16px;margin:0 auto 18px;display:grid;place-items:center;
  background:var(--grad);color:#fff;
}
.key-ic svg{width:30px;height:30px}
.key-card h3{font-size:1.25rem;font-weight:800;margin-bottom:8px}
.key-card .en{color:var(--brand);font-weight:700;font-size:.82rem;letter-spacing:.08em;display:block;margin-bottom:10px}
.key-card p{color:var(--muted);font-size:.98rem}

.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.about-grid h3{font-size:1.5rem;font-weight:800;margin-bottom:16px}
.about-grid p{color:var(--muted);margin-bottom:16px}
.overview-table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.overview-table th,.overview-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.97rem}
.overview-table th{background:var(--bg-soft);color:var(--navy);font-weight:700;width:36%;white-space:nowrap}
.overview-table tr:last-child th,.overview-table tr:last-child td{border-bottom:0}

.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.value{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:var(--shadow)}
.value .big{font-size:2rem;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.values-intro{color:var(--muted);font-size:.97rem;margin:6px 0 14px}
.values-intro b{color:var(--brand)}
.value h4{margin:6px 0;font-size:1.02rem;overflow-wrap:break-word}
.value p{color:var(--muted);font-size:.95rem;margin:0}

.message{background:var(--grad);color:#fff;border-radius:var(--radius);padding:48px;margin-top:56px;box-shadow:var(--shadow-lg)}
.message .q{font-size:1.15rem;line-height:1.9;opacity:.97}
.message .sign{margin-top:22px;font-weight:800;font-size:1.05rem;text-align:right}
.message .sign span{display:block;font-weight:500;opacity:.85;font-size:.92rem;margin-top:4px}

.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.biz-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;
  box-shadow:var(--shadow);transition:.25s;position:relative;overflow:hidden;
}
.biz-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.3s}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.biz-card:hover::before{transform:scaleX(1)}
.biz-ic{width:56px;height:56px;border-radius:14px;background:var(--bg-soft);display:grid;place-items:center;margin-bottom:18px;color:var(--brand)}
.biz-ic svg{width:30px;height:30px}
.biz-card h3{font-size:1.22rem;font-weight:800;margin-bottom:6px}
.biz-card .en{color:var(--brand);font-size:.78rem;font-weight:700;letter-spacing:.06em;display:block;margin-bottom:12px}
.biz-card p{color:var(--muted);font-size:.96rem;margin-bottom:14px}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tag{font-size:.78rem;color:var(--brand-d);background:var(--bg-soft);border:1px solid var(--line);padding:4px 11px;border-radius:30px;font-weight:600}

.tech{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.tech::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 15% 30%,rgba(41,168,214,.25),transparent 40%),
  radial-gradient(circle at 85% 70%,rgba(31,111,212,.28),transparent 42%)}
.tech .container{position:relative;z-index:2}
.tech .section-head h2{color:#fff}
.tech .section-head p{color:rgba(255,255,255,.8)}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tech-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:32px;backdrop-filter:blur(6px)}
.tech-card .num{font-size:.85rem;font-weight:700;color:var(--cyan);letter-spacing:.1em}
.tech-card h3{font-size:1.25rem;font-weight:800;margin:10px 0 12px}
.tech-card p{color:rgba(255,255,255,.82);font-size:.97rem}

.award{
  display:flex;gap:22px;align-items:center;background:var(--grad);color:#fff;border-radius:var(--radius);
  padding:30px 36px;margin-bottom:44px;box-shadow:var(--shadow-lg);flex-wrap:wrap;
}
.award .badge{font-size:2.6rem;font-weight:900;line-height:1;white-space:nowrap}
.award .txt h3{font-size:1.2rem;font-weight:800;margin-bottom:4px}
.award .txt p{opacity:.92;font-size:.97rem}
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.proj-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:26px 28px;box-shadow:var(--shadow);transition:.2s}
.proj-card:hover{transform:translateX(4px);box-shadow:var(--shadow-lg)}
.proj-card .label{font-size:.78rem;font-weight:700;color:var(--brand);letter-spacing:.05em}
.proj-card h3{font-size:1.1rem;font-weight:700;margin-top:8px;line-height:1.5}
.note{text-align:center;color:var(--muted);font-size:.92rem;margin-top:30px}

.vision-band{position:relative;padding:120px 0;text-align:center;color:#fff;background:#0a1430 url(../images/earth-night.jpg) center/cover no-repeat;overflow:hidden}
.vision-band::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(8,18,44,.80),rgba(8,18,44,.90))}
.vision-band .container{position:relative;z-index:2}
.vision-band .vb-eyebrow{color:#7fd3f5;font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.9rem;margin-bottom:16px}
.vision-band h2{font-size:clamp(1.7rem,3.8vw,2.7rem);font-weight:800;line-height:1.3;letter-spacing:-.01em;text-shadow:0 2px 20px rgba(0,0,0,.4)}
.vision-band p{margin:18px auto 0;font-size:1.08rem;opacity:.92;max-width:720px}

.loc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.loc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow);transition:.25s}
.loc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.loc-badge{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.02em;color:#fff;background:var(--grad);padding:5px 13px;border-radius:30px;margin-bottom:14px}
.loc-card h3{font-size:1.2rem;font-weight:800;margin-bottom:14px}
.loc-list{list-style:none;display:flex;flex-direction:column;gap:11px}
.loc-list li{display:flex;gap:12px;font-size:.97rem;color:var(--ink);line-height:1.6}
.loc-list li span{flex:none;width:42px;color:var(--muted);font-weight:600;font-size:.9rem}
.loc-list a{color:var(--brand-d);font-weight:600;word-break:break-all}
.loc-list a:hover{text-decoration:underline}
.loc-contact{background:linear-gradient(160deg,#f4f8fd,#fff)}
.qr-mini{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);text-align:center}
.qr-mini img{width:172px;height:172px;margin:0 auto 8px}
.qr-mini p{color:var(--muted);font-size:.86rem}
.vcf-dl{display:inline-block;margin-top:12px;font-size:.85rem;font-weight:700;color:var(--brand-d);border:1px solid var(--line);border-radius:30px;padding:7px 16px;transition:.2s}
.vcf-dl:hover{background:var(--bg-soft);border-color:var(--brand)}
.maps{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:26px}
.map-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.map-box h4{font-size:1rem;font-weight:700;padding:16px 20px;display:flex;align-items:center;gap:9px}
.map-box .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);flex:none}
.map-box iframe{width:100%;height:300px;border:0;display:block;border-top:1px solid var(--line)}
.contact-cta{text-align:center;margin-top:40px}
.contact-cta .btn{font-size:1.05rem}

.footer{background:#0c1c3d;color:rgba(255,255,255,.72);padding:56px 0 28px}
.footer-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer img.flogo{height:42px;margin-bottom:16px}
.footer .f-info{font-size:.95rem;line-height:1.9}
.footer .f-sitemap h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:14px}
.footer .f-sitemap ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:9px 30px}
.footer .f-sitemap a{font-weight:500;color:rgba(255,255,255,.72);font-size:.95rem}
.footer .f-sitemap a:hover{color:#fff}
.footer .copy{padding-top:22px;font-size:.85rem;color:rgba(255,255,255,.5)}

@media (max-width:980px){
  .about-grid,.loc-grid,.maps{grid-template-columns:1fr}
  .keys,.biz-grid,.tech-grid{grid-template-columns:1fr 1fr}
  .proj-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  .section{padding:70px 0}
  .brand img{height:40px}
  .lang{margin-left:0;margin-right:12px}
  .hero{min-height:auto;padding:116px 0 60px}
  .hero-bg{background-position:center center}
  .hero-bg::after{background:linear-gradient(165deg,rgba(7,17,42,.86),rgba(7,17,42,.93))}
  .hero h1,.hero-copy{max-width:100%}
  .hero-cta .btn{flex:1 1 140px;justify-content:center;padding:13px 18px}
  .nav{
    position:fixed;top:72px;right:0;width:min(78vw,320px);height:calc(100vh - 72px);
    background:#fff;flex-direction:column;align-items:flex-start;gap:6px;padding:26px 28px;
    transform:translateX(100%);transition:.3s;box-shadow:-10px 0 40px rgba(0,0,0,.12);
  }
  .nav.open{transform:translateX(0)}
  .nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav .btn-nav{margin-top:12px;width:100%;text-align:center;border-bottom:0}
  .hamb{display:flex}
  .hamb.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .hamb.open span:nth-child(2){opacity:0}
  .hamb.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .keys,.biz-grid,.tech-grid,.values{grid-template-columns:1fr}
  .keys{margin-top:36px}
  .message{padding:32px 24px}
  .award{flex-direction:column;text-align:center;align-items:center}
  .footer-top{flex-direction:column}
}