*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR",Arial,sans-serif;
  color:#111;
  background:#fff;
  line-height:1.65;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1160px,calc(100% - 48px));margin:0 auto}

.header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid #efefef;
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand{display:flex;align-items:center}
.brand-logo{height:48px;width:auto;object-fit:contain}
.nav{display:flex;gap:28px}
.nav a{font-size:14px;color:#444}
.menu-btn{
  display:none;
  border:0;background:transparent;
  font-size:24px;cursor:pointer
}

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:#fff;
  padding:120px 24px 48px;
}
.hero-title{
  margin:0;
  font-size:clamp(44px,9vw,104px);
  line-height:.98;
  letter-spacing:-.05em;
  font-weight:700;
}
.hero-subtitle{
  margin:14px 0 0;
  font-size:clamp(16px,2vw,24px);
  color:#555;
  letter-spacing:.14em;
}

.section{padding:96px 0}
.alt{background:#f8f8f6}
.visual-section{padding-top:0}
.hero-image{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:28px;
}

.section-label{
  margin:0 0 10px;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.14em;
  color:#777;
}
.section-head{margin-bottom:28px}
h2{
  margin:0;
  font-size:clamp(28px,4vw,44px);
  line-height:1.18;
  letter-spacing:-.03em;
}
h3{
  margin:0 0 10px;
  font-size:22px;
  line-height:1.2;
}

.about-grid,
.contact-grid{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:40px;
}
.about-copy p,
.contact-lead{margin:0 0 16px;color:#444;font-size:18px}

.product-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.card{
  overflow:hidden;
  background:#fff;
  border:1px solid #e9e9e9;
  border-radius:24px;
}
.card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.card-copy{padding:24px}
.card-copy p{margin:0;color:#555}

.application-block{margin-top:48px}
.application-block:first-of-type{margin-top:0}
.application-copy{max-width:760px;margin-bottom:18px}
.application-copy p{margin:8px 0 0;color:#555}

.gallery{
  display:grid;
  gap:16px;
}
.gallery.two{grid-template-columns:repeat(2,1fr)}
.gallery.three{grid-template-columns:repeat(3,1fr)}
.gallery img{
  width:100%;
  border-radius:20px;
  aspect-ratio:4/3;
  object-fit:cover;
  background:#f2f2f2;
  border:1px solid #ececec;
}

.info-card{
  background:#fff;
  border:1px solid #e8e8e8;
  border-radius:24px;
  overflow:hidden;
}
.info-row{
  display:grid;
  grid-template-columns:180px 1fr;
  gap:20px;
  padding:18px 24px;
  border-bottom:1px solid #efefef;
}
.info-row:last-child{border-bottom:none}
.info-row span{color:#777}
.info-row strong{font-weight:600}

.floating-links{
  position:fixed;
  right:24px;
  bottom:24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  z-index:90;
}
.floating-links a{
  width:52px;
  height:52px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#111;
  color:#fff;
  box-shadow:0 10px 24px rgba(0,0,0,.14);
  transition:transform .2s ease, background .2s ease;
}
.floating-links a:hover{
  transform:translateY(-2px);
  background:#333;
}
.floating-links svg{
  width:24px;
  height:24px;
  fill:currentColor;
}

.footer{
  border-top:1px solid #efefef;
  background:#fff;
}
.footer-inner{
  min-height:84px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  color:#666;
  font-size:14px;
}

@media (max-width: 900px){
  .nav{
    display:none;
    position:absolute;
    right:24px;
    top:78px;
    background:#fff;
    border:1px solid #ececec;
    border-radius:16px;
    padding:14px 16px;
    flex-direction:column;
    gap:14px;
    box-shadow:0 12px 30px rgba(0,0,0,.06);
  }
  .nav.open{display:flex}
  .menu-btn{display:block}
  .about-grid,.contact-grid,.product-grid,.gallery.two,.gallery.three{
    grid-template-columns:1fr;
  }
  .info-row{grid-template-columns:1fr;gap:6px}
  .footer-inner{
    flex-direction:column;
    align-items:flex-start;
    justify-content:center;
    padding:18px 0 92px;
  }
}
@media (max-width: 640px){
  .container{width:min(100% - 32px,1160px)}
  .section{padding:72px 0}
  .brand-logo{height:42px}
  .floating-links{
    right:16px;
    bottom:16px;
  }
  .floating-links a{
    width:48px;
    height:48px;
  }
}


.header-social{
  display:flex;
  gap:12px;
  margin-left:16px;
  align-items:center;
}

.header-social a{
  font-size:13px;
  padding:6px 10px;
  border:1px solid #ddd;
  border-radius:14px;
  color:#333;
  background:#fff;
  transition:0.2s;
}

.header-social a:hover{
  background:#111;
  color:#fff;
  border-color:#111;
}

@media (max-width:900px){
  .header-social{
    display:none;
  }
}


.sr-only{
  position:absolute !important;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0, 0, 0, 0);
  white-space:nowrap;
  border:0;
}