:root{
  --blue:#2d67ad;
  --blue-dark:#173d73;
  --navy:#102945;
  --red:#ef174c;
  --ink:#142033;
  --muted:#66758a;
  --line:#e3e9f1;
  --bg:#f6f9fc;
  --white:#fff;
  --shadow:0 18px 50px rgba(26,54,92,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"Noto Sans KR","Malgun Gothic",sans-serif;color:var(--ink);line-height:1.65;background:#fff}
a{color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 42px));margin:auto}
.hidden{display:none!important}
.topbar{background:var(--navy);color:#dce7f5;font-size:12px}
.topbar .container{height:34px;display:flex;justify-content:flex-end;align-items:center;gap:24px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{height:82px;display:flex;align-items:center;gap:30px}
.logo{width:188px;display:block;margin-right:auto}
nav{display:flex;gap:25px;height:100%;align-items:center}
nav a{text-decoration:none;font-size:14px;font-weight:700;color:#34445a;height:100%;display:flex;align-items:center;border-bottom:3px solid transparent}
nav a:hover,nav a.active{color:var(--blue);border-color:var(--blue)}
.lang-btn,.menu-btn{border:1px solid #cfd9e6;background:#fff;color:var(--blue-dark);border-radius:999px;padding:8px 15px;font-weight:800;cursor:pointer}
.menu-btn{display:none;border-radius:8px;padding:8px 11px}
.hero{position:relative;min-height:620px;display:flex;align-items:center;overflow:hidden;background:#0d2d50}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,34,61,.90) 0%,rgba(9,34,61,.70) 45%,rgba(9,34,61,.18) 78%,rgba(9,34,61,.12) 100%);z-index:1}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-content{position:relative;z-index:2;color:#fff;max-width:760px;padding:90px 0}
.kicker{font-size:12px;font-weight:800;letter-spacing:.18em;color:#9dc0e8;text-transform:uppercase}
.hero h1{font-size:58px;line-height:1.12;letter-spacing:-.045em;margin:14px 0 24px}
.hero p{font-size:18px;color:#e2eaf3;max-width:670px}
.actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border-radius:8px;padding:13px 22px;font-weight:800}
.btn-primary{background:var(--blue);color:#fff}
.btn-light{background:#fff;color:var(--blue-dark)}
.section{padding:88px 0}
.section.alt{background:var(--bg)}
.section-head{margin-bottom:38px}
.section-head .kicker{color:var(--blue)}
.section-head h2{font-size:38px;line-height:1.2;letter-spacing:-.035em;margin:6px 0 13px}
.section-head p{color:var(--muted);max-width:780px;margin:0}
.home-cards,.product-grid,.cap-grid,.cert-grid,.award-grid{display:grid;gap:22px}
.home-cards{grid-template-columns:repeat(3,1fr)}
.home-card{padding:30px;border:1px solid var(--line);border-radius:16px;background:#fff}
.home-card strong{display:block;color:var(--blue);font-size:12px;letter-spacing:.08em;margin-bottom:10px}
.home-card h3{margin:0 0 10px;font-size:21px}
.home-card p{margin:0;color:var(--muted)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.photo-card{border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.photo-card img{width:100%;height:410px;object-fit:cover}
.copy h2{font-size:38px;line-height:1.25;margin:0 0 22px;letter-spacing:-.035em}
.copy p{color:#56677c;font-size:16px}
.page-hero{background:linear-gradient(120deg,#edf4fb,#fff);padding:78px 0 62px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:46px;margin:8px 0 10px;letter-spacing:-.04em}
.page-hero p{color:var(--muted);max-width:760px}
.ceo-box{background:#fff;border:1px solid var(--line);border-left:5px solid var(--blue);border-radius:14px;padding:36px 38px;box-shadow:0 10px 30px rgba(32,64,105,.06)}
.ceo-box p{color:#536479;margin:0 0 16px}
.ceo-sign{margin-top:26px;font-weight:800;color:var(--ink)}
.timeline{position:relative;margin-top:20px}
.timeline::before{content:"";position:absolute;left:105px;top:0;bottom:0;width:1px;background:#d6e0eb}
.timeline-item{display:grid;grid-template-columns:85px 1fr;gap:40px;position:relative;padding:0 0 26px}
.timeline-item::before{content:"";position:absolute;left:100px;top:8px;width:11px;height:11px;background:var(--blue);border-radius:50%;box-shadow:0 0 0 5px #eaf2fb}
.timeline-date{font-weight:800;color:var(--blue-dark)}
.timeline-text{color:#506176}
.company-info{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.info-item{background:#fff;padding:22px}
.info-item b{display:block;font-size:12px;color:var(--blue);letter-spacing:.06em;margin-bottom:5px}
.product-grid{grid-template-columns:repeat(3,1fr)}
.product-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
.product-card img{width:100%;height:250px;object-fit:cover}
.product-body{padding:24px}
.product-body h3{margin:0 0 9px;font-size:22px}
.product-body p{margin:0;color:var(--muted)}
.cap-grid{grid-template-columns:repeat(5,1fr)}
.cap-card{border-top:3px solid var(--blue);background:#fff;padding:22px 16px;min-height:145px}
.cap-card strong{font-size:13px;color:#8795a7}
.cap-card h3{font-size:18px;margin:8px 0 6px}
.cap-card p{font-size:13px;color:var(--muted);margin:0}
.facility-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.facility-item{border-radius:14px;overflow:hidden;position:relative;background:#edf2f7}
.facility-item img{width:100%;height:240px;object-fit:cover}
.facility-item span{position:absolute;left:12px;bottom:12px;background:rgba(11,35,61,.82);color:#fff;padding:6px 10px;border-radius:6px;font-size:12px}
.cert-grid{grid-template-columns:repeat(3,1fr)}
.cert-card{border:1px solid var(--line);border-radius:15px;padding:16px;background:#fff}
.cert-card a{text-decoration:none}
.cert-card img{width:100%;height:380px;object-fit:contain;background:#f7f9fc;border-radius:8px}
.cert-card h3{font-size:18px;margin:15px 0 5px}
.cert-card p{font-size:13px;color:var(--muted);margin:0}
.award-grid{grid-template-columns:repeat(2,1fr)}
.award-card{display:grid;grid-template-columns:180px 1fr;gap:22px;border:1px solid var(--line);border-radius:15px;padding:17px;background:#fff;align-items:center}
.award-card img{width:180px;height:235px;object-fit:cover;border-radius:8px}
.award-card h3{margin:0 0 8px}
.award-card p{margin:0;color:var(--muted)}
.contact-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:42px}
.contact-card{background:var(--navy);color:#fff;border-radius:18px;padding:38px}
.contact-card h2{font-size:32px;margin-top:0}
.contact-row{padding:15px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.contact-row:last-child{border-bottom:0}
.contact-row b{display:block;color:#9fc0e3;font-size:11px;letter-spacing:.1em}
.contact-row a{text-decoration:none;color:#fff}
.contact-side{border:1px solid var(--line);border-radius:18px;padding:34px;background:#fff}
.contact-side h3{font-size:23px;margin-top:0}
.contact-side p{color:var(--muted)}
.footer{background:#0c2037;color:#9fb1c5;padding:34px 0;margin-top:0}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-end;gap:24px}
.footer-logo{width:150px;filter:brightness(0) invert(1);opacity:.9;margin-bottom:12px}
.footer p{margin:3px 0;font-size:12px}
@media(max-width:980px){
  nav{display:none;position:absolute;top:82px;left:0;right:0;height:auto;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:12px 22px;gap:0}
  nav.open{display:flex}
  nav a{height:auto;padding:13px 0;border-bottom:1px solid #edf1f5}
  .menu-btn{display:block}
  .hero{min-height:540px}
  .hero h1{font-size:46px}
  .home-cards,.product-grid,.cert-grid{grid-template-columns:1fr 1fr}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .two-col,.contact-wrap{grid-template-columns:1fr}
  .facility-gallery{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .topbar{display:none}
  .header-inner{height:72px}
  .logo{width:155px}
  .hero{min-height:500px}
  .hero h1{font-size:38px}
  .hero p{font-size:16px}
  .section{padding:64px 0}
  .page-hero{padding:58px 0 45px}
  .page-hero h1,.section-head h2,.copy h2{font-size:32px}
  .home-cards,.product-grid,.cert-grid,.award-grid,.facility-gallery{grid-template-columns:1fr}
  .cap-grid{grid-template-columns:1fr}
  .photo-card img{height:280px}
  .timeline::before{left:77px}
  .timeline-item{grid-template-columns:62px 1fr;gap:28px}
  .timeline-item::before{left:72px}
  .company-info{grid-template-columns:1fr}
  .award-card{grid-template-columns:1fr}
  .award-card img{width:100%;height:320px;object-fit:contain}
  .footer-inner{flex-direction:column;align-items:flex-start}
}

.topbar{display:none!important}


/* Social contribution */
.csr-list{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.csr-group{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 28px}
.csr-group h3{margin:0 0 14px;font-size:20px;color:var(--deep)}
.csr-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:start;padding:12px 0;border-bottom:1px solid #edf1f5;font-size:14px}
.csr-row:last-child{border-bottom:0}
.csr-row span{color:#56677c}
.csr-row b{color:#1d4f8f;font-size:13px;text-align:right;white-space:nowrap}
.csr-note{margin:20px 0 0;color:#7a8796;font-size:12px}
@media(max-width:900px){.csr-list{grid-template-columns:1fr}}
@media(max-width:640px){.csr-group{padding:21px 19px}.csr-row{grid-template-columns:1fr;gap:3px}.csr-row b{text-align:left;white-space:normal}}

.csr-total{
  margin-top:22px;
  padding:18px 22px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:center;
}
.csr-total span{color:#56677c}
.csr-total b{font-size:22px;color:#1d4f8f}
@media(max-width:640px){
  .csr-total{align-items:flex-start;flex-direction:column;gap:6px}
}