:root{
    --navy:#0F1B33;
    --blue:#2454C7;
    --accent:#E1531F;
    --teal:#0B9C8B;
    --violet:#6D3FE0;
    --amber:#DE8A1C;
    --paper:#FFFFFF;
    --mist:#F4F5F8;
    --line:#E2E5EB;
    --gray:#5B6472;
    --maxw:1120px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Malgun Gothic',sans-serif;
    color:var(--navy);
    background:var(--paper);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

  /* Header */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
  .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.28rem;letter-spacing:-0.02em;}
  .logo .dot{color:var(--accent);}
  .logo-mark{height:38px;width:auto;display:block;}
  .logo-text{display:flex;flex-direction:column;line-height:1.2;}
  .logo-kr{font-size:.8rem;font-weight:700;color:var(--navy);}
  .logo small{font-weight:500;font-size:.6rem;color:var(--gray);letter-spacing:.02em;}
  nav.links{display:flex;gap:36px;}
  nav.links a{font-size:.94rem;font-weight:500;color:var(--navy);}
  nav.links a:hover{color:var(--blue);}
  .nav-cta{
    font-size:.88rem;font-weight:600;padding:10px 20px;
    border:1px solid var(--navy);border-radius:2px;
    transition:background .15s ease, color .15s ease;
  }
  .nav-cta:hover{background:var(--navy);color:#fff;}
  .burger{display:none;background:none;border:none;cursor:pointer;padding:8px;}
  .burger span{display:block;width:22px;height:2px;background:var(--navy);margin:5px 0;}

  /* Hero */
  .hero{
    position:relative;padding:0;border-bottom:1px solid var(--line);
    overflow:hidden;color:#fff;
  }
  .hero-media{position:absolute;inset:0;z-index:0;}
  .hero-media img{width:100%;height:100%;object-fit:cover;object-position:70% center;}
  .hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg, rgba(8,16,36,.94) 0%, rgba(8,16,36,.82) 38%, rgba(8,16,36,.42) 64%, rgba(8,16,36,.18) 100%);
  }
  .hero-content{position:relative;z-index:1;padding:110px 0 84px;}
  .hero .eyebrow{
    font-size:.88rem;color:#9FC0FF;font-weight:600;margin-bottom:22px;
  }
  .hero h1{
    font-size:clamp(2.2rem,4.2vw,3.5rem);
    font-weight:800;
    letter-spacing:-0.03em;
    line-height:1.28;
    margin:0 0 26px;
    max-width:680px;
    color:#fff;
  }
  .hero p.lead{
    font-size:1.12rem;color:rgba(255,255,255,.82);max-width:560px;margin:0 0 44px;
  }
  .hero-meta{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid rgba(255,255,255,.25);margin-top:8px;padding-bottom:8px;}
  .hero-meta div{
    padding:22px 40px 0 0;border-right:1px solid rgba(255,255,255,.25);margin-right:40px;flex:0 0 auto;
  }
  .hero-meta div:last-child{border-right:none;margin-right:0;}
  .hero-meta .num{font-size:1.5rem;font-weight:800;letter-spacing:-0.02em;color:#fff;}
  .hero-meta .lab{font-size:.84rem;color:rgba(255,255,255,.65);margin-top:4px;}

  section{padding:96px 0;}
  .section-head{max-width:640px;margin-bottom:56px;}
  .kicker{font-size:.86rem;font-weight:600;color:var(--blue);margin-bottom:14px;}
  .section-head h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:800;letter-spacing:-0.02em;margin:0 0 16px;}
  .section-head p{color:var(--gray);font-size:1.02rem;margin:0;}

  /* about */
  .about{background:var(--mist);}
  .about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start;}
  .about-copy p{color:var(--navy);font-size:1.06rem;margin:0 0 18px;}
  .about-copy p.muted{color:var(--gray);font-size:.98rem;}
  .fact-list{border-top:1px solid var(--line);}
  .fact-row{display:flex;justify-content:space-between;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);}
  .fact-row .k{font-size:.92rem;color:var(--gray);}
  .fact-row .v{font-size:.96rem;font-weight:600;text-align:right;}

  /* business areas */
  .areas{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);}
  .area{
    border-right:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:38px 32px;display:flex;flex-direction:column;
  }
  .area{transition:background .18s ease;}
  .area:hover{background:var(--mist);}
  .area h3{font-size:1.14rem;font-weight:700;margin:0 0 12px;letter-spacing:-0.01em;}
  .area p{font-size:.92rem;color:var(--gray);margin:0 0 16px;}
  .area ul{list-style:none;margin:0;padding:14px 0 0;border-top:1px solid var(--line);}
  .area li{
    font-size:.86rem;color:var(--navy);margin:0 0 9px;padding-left:14px;position:relative;
  }
  .area li:last-child{margin-bottom:0;}
  .area li::before{
    content:"";position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;background:var(--gray);
  }
  .icon-badge{
    width:46px;height:46px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    margin-bottom:20px;
  }
  .icon-badge svg{width:24px;height:24px;}
  .icon-badge.c-blue{background:linear-gradient(135deg,#2454C7,#3E77F0);}
  .icon-badge.c-teal{background:linear-gradient(135deg,#0B9C8B,#1FCBB4);}
  .icon-badge.c-accent{background:linear-gradient(135deg,#E1531F,#F27A32);}
  .icon-badge.c-violet{background:linear-gradient(135deg,#6D3FE0,#9366F5);}
  .icon-badge.c-amber{background:linear-gradient(135deg,#DE8A1C,#F0AA3C);}
  .area-more{display:inline-block;margin-top:18px;font-size:.86rem;font-weight:700;color:var(--blue);}
  .area-more:hover{text-decoration:underline;}

  /* nav dropdown */
  .nav-item{position:relative;display:flex;align-items:center;}
  .nav-item-link{display:flex;align-items:center;gap:5px;}
  .nav-item-link .caret{color:var(--gray);transition:transform .15s ease;}
  .nav-item:hover .caret, .nav-item:focus-within .caret{transform:rotate(180deg);}
  .nav-dropdown{
    position:absolute;top:100%;left:50%;transform:translateX(-50%);
    padding-top:14px;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .15s ease, visibility .15s ease;
    z-index:60;
  }
  .nav-item:hover .nav-dropdown, .nav-item:focus-within .nav-dropdown{
    opacity:1;visibility:visible;pointer-events:auto;
  }
  .nav-dropdown-inner{
    background:#fff;border:1px solid var(--line);border-radius:10px;
    box-shadow:0 24px 48px -20px rgba(15,27,51,.28);
    min-width:180px;padding:8px;
  }
  .nav-dropdown a{display:block;padding:10px 12px;border-radius:6px;font-size:.9rem;font-weight:500;color:var(--navy);}
  .nav-dropdown a:hover{background:var(--mist);color:var(--blue);}

  /* cases */
  .cases{background:var(--mist);}
  .case-row{
    display:grid;grid-template-columns:200px 1fr 1fr;gap:32px;
    padding:26px 0;border-bottom:1px solid var(--line);align-items:baseline;
  }
  .case-row:first-of-type{border-top:1px solid var(--line);}
  .case-row .client{font-weight:800;font-size:1.02rem;display:flex;align-items:center;gap:10px;}
  .case-row .dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;}
  .case-row .proj{font-size:.96rem;color:var(--navy);}
  .case-row .outcome{font-size:.9rem;color:var(--gray);}

  /* contact */
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;}
  .contact-copy h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:800;letter-spacing:-0.02em;margin:0 0 18px;max-width:420px;}
  .contact-copy p{color:var(--gray);font-size:1.02rem;max-width:420px;margin:0;}
  .contact-list{border-top:1px solid var(--line);}
  .contact-item{padding:20px 0;border-bottom:1px solid var(--line);}
  .contact-item .k{font-size:.82rem;color:var(--gray);margin-bottom:6px;}
  .contact-item .v{font-size:1.04rem;font-weight:600;}

  footer{border-top:1px solid var(--line);padding:32px 0;}
  .foot-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
  .foot-row .fname{font-weight:700;font-size:.94rem;}
  .foot-row .fmeta{font-size:.82rem;color:var(--gray);}

  @media (max-width:860px){
    .about-grid, .contact-grid{grid-template-columns:1fr;gap:40px;}
    .areas{grid-template-columns:1fr 1fr;}
    .case-row{grid-template-columns:1fr;gap:6px;}
    nav.links{display:none;}
    .burger{display:block;}
    .nav-cta{display:none;}
    .hero-content{padding:80px 0 56px;}
    .hero-media::after{
      background:linear-gradient(180deg, rgba(8,16,36,.55) 0%, rgba(8,16,36,.88) 55%, rgba(8,16,36,.94) 100%);
    }
    .nav-item{flex-direction:column;align-items:flex-start;width:100%;}
    .nav-dropdown{
      position:static;transform:none;padding-top:6px;
      opacity:1;visibility:visible;pointer-events:auto;
    }
    .nav-dropdown-inner{
      box-shadow:none;border:none;padding:0 0 0 14px;min-width:0;background:none;
    }
    .nav-dropdown a{padding:8px 0;font-size:.88rem;color:var(--gray);}
    .nav-item-link .caret{display:none;}
  }
  @media (max-width:560px){
    .areas{grid-template-columns:1fr;}
    .hero{padding:60px 0 0;}
    section{padding:68px 0;}
  }

/* ---- detail pages ---- */
.detail-hero{
  padding:64px 0 56px;border-bottom:1px solid var(--line);
}
.back-link{
  display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:600;color:var(--gray);margin-bottom:28px;
}
.back-link:hover{color:var(--blue);}
.detail-hero .icon-badge{width:56px;height:56px;border-radius:14px;margin-bottom:24px;}
.detail-hero .icon-badge svg{width:28px;height:28px;}
.detail-hero h1{
  font-size:clamp(2rem,4vw,3rem);font-weight:800;letter-spacing:-0.03em;line-height:1.25;margin:0 0 20px;max-width:680px;
}
.detail-hero p.lead{font-size:1.1rem;color:var(--gray);max-width:600px;margin:0;}

.detail-body{padding:72px 0;}
.detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
.detail-layout.reverse .detail-media{order:2;}
.detail-copy h2{font-size:1.5rem;font-weight:800;letter-spacing:-0.02em;margin:0 0 18px;}
.detail-copy p{color:var(--gray);font-size:1.02rem;margin:0 0 16px;}
.detail-list{list-style:none;margin:0;padding:0;}
.detail-list li{
  display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);font-size:.98rem;color:var(--navy);
}
.detail-list li:last-child{border-bottom:1px solid var(--line);}
.detail-list li .num{font-weight:800;color:var(--blue);flex:0 0 auto;font-size:.9rem;}
.detail-media img{
  border-radius:4px;border:1px solid var(--line);box-shadow:0 20px 50px -24px rgba(15,27,51,.25);
}
.detail-media .cap{font-size:.82rem;color:var(--gray);margin-top:12px;}
.spec-band{background:var(--mist);padding:64px 0;}
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.spec-item{background:var(--paper);padding:28px;}
.spec-item .k{font-size:.84rem;color:var(--gray);margin-bottom:8px;}
.spec-item .v{font-size:1.02rem;font-weight:700;}
.other-areas{padding:72px 0;}
.other-areas .row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);}
.other-areas a{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:24px;font-size:.94rem;font-weight:700;display:flex;align-items:center;justify-content:space-between;
  transition:background .15s ease;
}
.other-areas a:hover{background:var(--mist);color:var(--blue);}
.full-figure{margin:0;}
.full-figure img{
  width:100%;border-radius:4px;border:1px solid var(--line);
  box-shadow:0 20px 50px -24px rgba(15,27,51,.25);
}
.full-figure .cap{font-size:.85rem;color:var(--gray);margin-top:12px;}

@media (max-width:860px){
  .detail-layout{grid-template-columns:1fr;gap:36px;}
  .detail-layout.reverse .detail-media{order:0;}
  .spec-grid{grid-template-columns:1fr;}
  .other-areas .row{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  .other-areas .row{grid-template-columns:1fr;}
}