body{
  margin:0;
  font-family:"Pretendard","Noto Sans KR","Malgun Gothic",sans-serif;
  background:#f5f7fb;
  color:#222;
  line-height:1.6;
}

.container{
  width:1200px;
  max-width:95%;
  margin:auto;
}

section{
  padding:80px 0;
}

/* header */
header{
  background:#fff;
  border-bottom:1px solid #eee;
}

.nav-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  height:70px;
}

.brand{
  display:flex;
  align-items:center;
  font-weight:bold;
  font-size:20px;
  text-decoration:none;
  color:#111;
}

.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}

.brand-text .company{
  font-size:16px;
  font-weight:700;
  letter-spacing:-0.02em;
  color:#111;
}

.brand-text .corp{
  font-size:11px;
  color:#6b7280;
  letter-spacing:0.04em;
}

.logo{
  height:32px;
  margin-right:10px;
}


.nav-links a{
  margin-left:25px;
  text-decoration:none;
  color:#333;
  font-weight:600;
  position:relative;
  transition:color .25s ease;
}

.nav-links a:hover{
  color:#2563eb;
}

.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-6px;
  width:0;
  height:2px;
  background:#2563eb;
  transition:width .25s ease;
}

.nav-links a:hover::after{
  width:100%;
}

.nav-links a.active{
  color:#2563eb;
}

.nav-links a.active::after{
  width:100%;
}

/* hero */
.hero{
  background:
    linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)),
    url("../images/factory.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:90px 0;
}

.hero h1{
  font-size:46px;
  margin-bottom:15px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-0.02em;
}

.hero p{
  font-size:18px;
  max-width:800px;
  line-height:1.9;
  opacity:0.95;
}

.hero-subcopy{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:16px;
  font-size:15px;
  font-weight:500;
  letter-spacing:0.04em;
  color:rgba(255,255,255,0.78);
}

.hero-subcopy span{
  display:block;
  width:42px;
  height:1px;
  background:rgba(255,255,255,0.45);
}

.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}

.hero-point{
  display:inline-flex;
  align-items:center;
  padding:10px 16px;
  border-radius:999px;
  background:rgba(255,255,255,0.14);
  border:1px solid rgba(255,255,255,0.22);
  color:#fff;
  font-size:14px;
  font-weight:600;
  backdrop-filter:blur(6px);
}

/* section title */
.section-title-wrap{
  margin-bottom:36px;
}

.section-kicker{
  display:inline-block;
  font-size:14px;
  font-weight:700;
  color:#2563eb;
  letter-spacing:1px;
  margin-bottom:10px;
}

.section-title{
  position:relative;
  display:inline-block;
  margin:0 0 12px;
  padding-bottom:10px;
  font-size:38px;
  font-weight:800;
  color:#111827;
  letter-spacing:-0.02em;
}

.section-title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:40px;
  height:3px;
  background:#2563eb;
  border-radius:2px;
}

.section-desc{
  margin:0;
  max-width:820px;
  font-size:17px;
  line-height:1.8;
  color:#6b7280;
}

.service-icon{
  width:48px;
  height:48px;
  margin-bottom:16px;
}


/* card common */
.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}

.card,
.project-card,
.business-card,
.client-card{
  transition:
    opacity .6s ease,
    transform .6s ease,
    box-shadow .25s ease;
}

/* 기본 카드 스타일 */
.card{
  background:#fff;
  border-radius:16px;
  padding:25px;
  border:1px solid #e5e7eb;
  box-shadow:0 8px 24px rgba(0,0,0,0.05);
}

.project-card{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:18px;
  padding:28px 24px;
  box-shadow:0 10px 24px rgba(0,0,0,0.05);
}

.business-card{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:18px;
  padding:30px 26px;
  box-shadow:0 10px 24px rgba(0,0,0,0.05);
}

.client-card{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:14px;
  padding:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  height:80px;
  box-shadow:0 8px 20px rgba(0,0,0,0.04);
}

/* reveal + hover 공통 */
.card,
.project-card,
.business-card,
.about-info-card,
.timeline-item{
  opacity:0;
  transform:translateY(24px);
  transition:
    opacity .6s ease,
    transform .22s ease,
    box-shadow .22s ease;
}

.card.show,
.project-card.show,
.business-card.show,
.about-info-card.show,
.timeline-item.show{
  opacity:1;
  transform:translateY(0);
}

/* 등장 딜레이 */
.card.show:nth-child(1),
.project-card.show:nth-child(1),
.business-card.show:nth-child(1){
  transition-delay:.05s;
}

.card.show:nth-child(2),
.project-card.show:nth-child(2),
.business-card.show:nth-child(2){
  transition-delay:.12s;
}

.card.show:nth-child(3),
.project-card.show:nth-child(3),
.business-card.show:nth-child(3){
  transition-delay:.18s;
}

/* reveal 완료 후 hover */
.card.show:hover,
.project-card.show:hover,
.business-card.show:hover,
.about-info-card.show:hover,
.timeline-item.show:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 36px rgba(0,0,0,0.12);
}

/* client-card는 reveal 대상이 아니므로 별도 hover */
.client-card{
  transition:transform .25s ease, box-shadow .25s ease;
}

.client-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 24px rgba(0,0,0,0.10);
}


/* project */
.project-section{
  background:#f8fbff;
}

.project-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}


.project-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
  background:linear-gradient(135deg,#2563eb,#06b6d4);
  color:#fff;
  font-size:18px;
  font-weight:800;
}

.project-card h3{
  margin:0 0 12px;
  font-size:22px;
  color:#111827;
}

.project-card p{
  margin:0;
  font-size:15px;
  line-height:1.8;
  color:#6b7280;
}

/* about */
.about-hero{
  padding:80px 0 90px;
  background:linear-gradient(180deg,#f8fbff 0%, #eef4ff 100%);
}

.about-title{
  margin:0;
  font-size:42px;
  font-weight:800;
  color:#111827;
}

.about-desc{
  max-width:900px;
  font-size:18px;
  line-height:1.9;
  color:#4b5563;
  margin-bottom:40px;
}

.about-info-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}

.about-info-card{
  display:flex;
  align-items:flex-start;
  gap:18px;
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:16px;
  padding:24px 26px;
  box-shadow:0 8px 24px rgba(0,0,0,0.05);
}

.about-info-card::before{
  content:"";
  width:6px;
  min-height:70px;
  height:100%;
  border-radius:6px;
  background:linear-gradient(180deg,#2563eb,#06b6d4);
  display:block;
  flex-shrink:0;
}

.about-info-text{
  display:flex;
  flex-direction:column;
}

.about-info-label{
  font-size:14px;
  font-weight:700;
  color:#2563eb;
  margin-bottom:10px;
}

.about-info-value{
  font-size:20px;
  font-weight:700;
  color:#111827;
  line-height:1.6;
}

/* business */
.business-section{
  padding:80px 0;
}

.business-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}

.business-card{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:18px;
  padding:30px 26px;
  box-shadow:0 10px 24px rgba(0,0,0,0.05);
}

.business-icon{
  width:50px;
  margin-bottom:18px;
}

.business-card h3{
  font-size:24px;
  margin:0 0 12px;
}

.business-card p{
  font-size:15px;
  line-height:1.7;
  color:#6b7280;
  margin:0 0 18px;
}

.business-list{
  padding-left:18px;
  margin:0;
}

.business-list li{
  margin-bottom:6px;
  color:#374151;
  line-height:1.7;
}

/* history */
.timeline{
  position:relative;
  margin-top:40px;
  padding-left:40px;
}

.timeline::before{
  content:"";
  position:absolute;
  left:12px;
  top:0;
  width:2px;
  height:100%;
  background:#d1d5db;
}

.timeline-item{
  position:relative;
  margin-bottom:30px;
  padding-left:30px;
}

.timeline-dot{
  position:absolute;
  left:-4px;
  top:8px;
  width:14px;
  height:14px;
  border-radius:50%;
  background:#2563eb;
  border:4px solid #e0ecff;
  z-index:2;
}

.timeline-content{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:16px;
  padding:20px 24px;
  box-shadow:0 8px 24px rgba(0,0,0,0.06);
}

.timeline-date{
  font-size:14px;
  font-weight:700;
  color:#2563eb;
  margin-bottom:8px;
}

.timeline-content h3{
  margin:0 0 8px;
  font-size:22px;
}

.timeline-content p{
  margin:0;
  color:#6b7280;
  line-height:1.6;
}

/* client */
.client-section{
  padding:80px 0;
}

.client-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
  align-items:center;
}

.client-card{
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:14px;
  padding:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  height:80px;
}

.client-card img{
  max-width:100%;
  max-height:40px;
  object-fit:contain;
}

.client-placeholder{
  font-size:14px;
  font-weight:600;
  color:#9ca3af;
}

/* footer */
.footer{
  border-top:1px solid #e5e7eb;
  padding:30px 0;
  background:#f8fafc;
  color:#555;
  font-size:14px;
}

.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:20px;
}

.footer-company{
  line-height:1.8;
}

.footer-company strong{
  font-size:16px;
}

.footer-copy{
  text-align:right;
  white-space:nowrap;
}

/* responsive */
@media (max-width:1024px){
  .cards,
  .project-grid,
  .business-grid{
    grid-template-columns:repeat(2,1fr);
  }

  .client-grid{
    grid-template-columns:repeat(3,1fr);
  }

  .section-title{
    font-size:30px;
  }

  .section-desc{
    font-size:16px;
  }

  .hero h1{
    font-size:34px;
  }

  .about-title{
    font-size:32px;
  }

  .about-desc{
    font-size:16px;
  }

  .about-info-grid{
    grid-template-columns:1fr;
  }

  .about-info-value{
    font-size:18px;
  }
}

@media (max-width:768px){
  .nav-inner{
    flex-direction:column;
    justify-content:center;
    height:auto;
    padding:16px 0;
  }

  .nav-links{
    margin-top:10px;
  }

  .nav-links a{
    margin:0 10px;
  }

  .cards,
  .project-grid,
  .business-grid,
  .client-grid{
    grid-template-columns:1fr;
  }

  .hero{
    padding:70px 0;
  }

  .hero h1{
    font-size:28px;
  }

  .hero p{
    font-size:16px;
  }

  .hero-subcopy{
    font-size:13px;
    gap:10px;
  }

  .hero-subcopy span{
    width:28px;
  }

  .section-title{
    font-size:26px;
  }

  .footer-inner{
    flex-direction:column;
  }

  .footer-copy{
    text-align:left;
    white-space:normal;
  }
}