:root{
  --ink:#111417; --ink-2:#1B2026; --line:#E3E6EA; --line-d:#2C333B;
  --blue:#2E6BC6; --blue-d:#1F54A3; --bg:#FFFFFF; --bg-2:#F4F5F7;
  --text:#15191E; --sub:#5B636D; --sub-d:#A3ABB5;
  --font:"Noto Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --wrap:1240px; --gut:clamp(16px,4vw,40px);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.7;word-break:keep-all;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
h1,h2,h3,p{margin:0}
h1,h2,h3{letter-spacing:-.03em;line-height:1.3;text-wrap:balance}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.sec{padding-block:clamp(80px,11vw,140px)}
.head{margin-bottom:clamp(36px,5vw,60px);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 48px}
.head .kicker{font-size:15px;font-weight:700;color:var(--blue)}
.head h2{font-size:clamp(28px,3.4vw,44px);font-weight:700;margin-top:10px}
.head p{color:var(--sub);max-width:460px}
.more-link{display:inline-flex;align-items:center;gap:10px;font-weight:500;border-bottom:1px solid currentColor;padding-bottom:4px}
.more-link::after{content:"→"}

/* header */
.hdr{position:fixed;inset:0 0 auto 0;z-index:40;padding-top:env(safe-area-inset-top,0px);color:#fff;transition:background .35s,color .35s,box-shadow .35s}
.hdr.solid{background:#fff;color:var(--text);box-shadow:0 1px 0 var(--line)}
.hdr .wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:12px}
.logo .mk{width:52px;height:23px;background:#fff;-webkit-mask:url(images/logo.png) center/contain no-repeat;mask:url(images/logo.png) center/contain no-repeat;transition:background .35s}
.hdr.solid .logo .mk{background:var(--blue)}
.logo b{font-size:21px;font-weight:900;letter-spacing:-.04em}
.logo small{display:block;font-size:12px;opacity:.75;font-weight:500;line-height:1.2;margin-top:2px}
.gnb{display:flex;gap:40px;font-weight:500;font-size:16px}
.gnb a{opacity:.9}.gnb a:hover{opacity:1;color:var(--blue)}
.hdr .tel{font-weight:700;font-size:17px;display:flex;align-items:center;gap:8px}
.hdr .tel i{font-style:normal;font-size:12px;font-weight:500;opacity:.75}
@media (max-width:960px){.gnb{display:none}}
@media (max-width:560px){.hdr .tel{display:none}}

/* hero */
.hero{position:relative;height:min(100svh,920px);min-height:560px;background:#000;color:#fff;overflow:hidden}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s ease}
.slide.on{opacity:1}
.slide img{width:100%;height:100%;object-fit:cover;transform:scale(1.02)}
.slide.on img{animation:kb 8s ease-out forwards}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.12)}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.72) 0%,rgba(0,0,0,.35) 55%,rgba(0,0,0,.15) 100%),linear-gradient(0deg,rgba(0,0,0,.55),transparent 40%);pointer-events:none}
.hero-txt{position:absolute;z-index:2;left:0;right:0;bottom:clamp(90px,14vh,150px)}
.hero-txt .loc{font-size:15px;font-weight:500;opacity:.85;display:flex;align-items:center;gap:10px}
.hero-txt .loc::before{content:"";width:28px;height:2px;background:#fff}
.hero-txt h1{font-size:clamp(34px,5.6vw,76px);font-weight:900;line-height:1.18;margin-top:18px}
.hero-txt p{margin-top:22px;font-size:clamp(16px,1.5vw,19px);opacity:.9;max-width:36em}
.hero-txt .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:56px;padding:0 28px;font-weight:700;font-size:16px;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:background .25s,color .25s,border-color .25s}
.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:var(--blue-d)}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}.btn-ghost:hover{background:#fff;color:var(--text)}
.hero-txt .rise{opacity:0;transform:translateY(24px);animation:rise 1s cubic-bezier(.2,.8,.2,1) forwards}
.hero-txt .rise:nth-child(2){animation-delay:.15s}.hero-txt .rise:nth-child(3){animation-delay:.3s}.hero-txt .rise:nth-child(4){animation-delay:.45s}
@keyframes rise{to{opacity:1;transform:none}}
.hero-nav{position:absolute;z-index:2;left:0;right:0;bottom:40px}
.hero-nav .wrap{display:flex;align-items:center;gap:22px;font-size:14px}
.hero-nav .num{white-space:nowrap;font-weight:700;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.hero-nav .bar{flex:0 1 220px;min-width:60px;height:2px;background:rgba(255,255,255,.3);position:relative;overflow:hidden}
.hero-nav .bar i{position:absolute;inset:0;background:#fff;transform-origin:left;transform:scaleX(0)}
.hero-nav .bar i.run{animation:bar 6s linear forwards}
@keyframes bar{to{transform:scaleX(1)}}
.hero-nav .cap{opacity:.8;margin-left:auto;text-align:right}
.hero-nav button{background:none;border:1px solid rgba(255,255,255,.5);color:#fff;width:40px;height:40px;cursor:pointer;font-size:16px}
.hero-nav button:hover{background:#fff;color:#000}
@media (max-width:700px){.hero-nav .cap{display:none}.hero-txt{bottom:110px}}

/* about */
.about{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,96px);align-items:center}
.about .ph{position:relative;aspect-ratio:4/3;overflow:hidden}
.about .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s ease}
.about .ph img.on{opacity:1;animation:kb 6s ease-out forwards}
.about .ph span{z-index:2;transition:opacity .4s}
.ab-dots{position:absolute;right:18px;bottom:18px;z-index:2;display:flex;gap:8px}
.ab-dots button{width:10px;height:10px;border-radius:50%;border:0;padding:0;background:rgba(255,255,255,.5);cursor:pointer}
.ab-dots button[aria-current="true"]{background:#fff;width:26px;border-radius:5px}
.about .ph span{position:absolute;left:0;bottom:0;background:var(--blue);color:#fff;padding:18px 24px;font-weight:700;font-size:15px;line-height:1.5}
.about h2{font-size:clamp(28px,3.4vw,44px);font-weight:700;margin-top:10px}
.about .lead{margin-top:24px;color:var(--sub);font-size:17px}
.lic{margin-top:36px;border-top:2px solid var(--text)}
.lic li{display:flex;justify-content:space-between;align-items:center;padding:16px 2px;border-bottom:1px solid var(--line);font-weight:500}
.lic li span{font-size:14px;color:var(--sub);font-weight:400}
.lic ul{list-style:none;margin:0;padding:0}
.promise{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.promise b{font-size:14px;font-weight:500;border:1px solid var(--line);padding:8px 14px}
@media (max-width:900px){.about{grid-template-columns:1fr}.about .ph{aspect-ratio:16/10}}

/* business */
.biz-bg{background:var(--bg-2)}
.biz{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.biz a{position:relative;aspect-ratio:3/4;overflow:hidden;color:#fff;display:flex;flex-direction:column;justify-content:flex-end;padding:28px 26px}
.biz img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.8,.2,1)}
.biz a::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(0deg,rgba(0,0,0,.8) 0%,rgba(0,0,0,.1) 60%);transition:background .4s}
.biz a:hover img{transform:scale(1.08)}
.biz a:hover::before{background:linear-gradient(0deg,rgba(31,84,163,.92) 0%,rgba(31,84,163,.35) 70%)}
.biz h3,.biz p,.biz em{position:relative;z-index:2}
.biz em{font-style:normal;font-size:13px;opacity:.8;font-weight:500}
.biz h3{font-size:23px;font-weight:700;margin-top:6px}
.biz p{font-size:15px;opacity:.88;margin-top:10px;line-height:1.6}
@media (max-width:1000px){.biz{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.biz{grid-template-columns:1fr}.biz a{aspect-ratio:4/3}}

/* before after */
.ba-wrap{display:grid;grid-template-columns:1fr 320px;gap:clamp(28px,4vw,56px);align-items:start}
.ba{position:relative;aspect-ratio:16/9;overflow:hidden;background:#222;user-select:none;touch-action:pan-y}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba .after{clip-path:inset(0 0 0 var(--pos,50%))}
.ba .line{position:absolute;top:0;bottom:0;left:var(--pos,50%);width:2px;margin-left:-1px;background:#fff;pointer-events:none}
.ba .line::after{content:"";position:absolute;top:50%;left:50%;width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23111' stroke-width='2'%3E%3Cpath d='M9 6l-6 6 6 6M15 6l6 6-6 6'/%3E%3C/svg%3E") center/22px no-repeat;box-shadow:0 4px 16px rgba(0,0,0,.3)}
.ba .tag{position:absolute;top:16px;padding:6px 12px;font-size:14px;font-weight:700;color:#fff;background:rgba(0,0,0,.6);pointer-events:none}
.ba .tag.l{left:16px}.ba .tag.r{right:16px;background:var(--blue)}
.ba input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.cases{list-style:none;margin:0;padding:0;border-top:2px solid var(--text)}
.cases button{width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--line);padding:20px 4px;font-family:inherit;font-size:17px;font-weight:500;color:var(--sub);cursor:pointer;display:flex;justify-content:space-between;gap:12px}
.cases button span{font-size:14px;font-weight:400;white-space:nowrap}
.cases button[aria-pressed="true"]{color:var(--text);font-weight:700}
.cases button[aria-pressed="true"]::after{content:"";width:8px;height:8px;background:var(--blue);align-self:center;flex:none}
.ba-note{margin-top:20px;font-size:14px;color:var(--sub)}
@media (max-width:900px){.ba-wrap{grid-template-columns:1fr}}

/* projects */
.dark{background:var(--ink);color:#fff}
.dark .head p{color:var(--sub-d)}
.dark .head .kicker{color:#7FA8E6}
.pj{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:clamp(200px,20vw,280px);gap:16px}
.pj a{position:relative;overflow:hidden;grid-column:span 4;background:#000}
.pj a:nth-child(1){grid-column:span 8;grid-row:span 2}
.pj a:nth-child(5){grid-column:span 8}
.pj img{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform 1.2s cubic-bezier(.2,.8,.2,1),opacity .4s}
.pj a:hover img{transform:scale(1.06);opacity:1}
.pj .cap{position:absolute;left:0;right:0;bottom:0;padding:22px 24px;background:linear-gradient(0deg,rgba(0,0,0,.85),transparent)}
.pj .cap em{font-style:normal;font-size:13px;color:#C9D2DC}
.pj .cap b{display:block;font-size:19px;font-weight:700;margin-top:2px}
.pj a:nth-child(1) .cap b{font-size:26px}
@media (max-width:900px){.pj{grid-template-columns:1fr 1fr;grid-auto-rows:220px}.pj a,.pj a:nth-child(1),.pj a:nth-child(5){grid-column:span 1;grid-row:span 1}.pj a:nth-child(1){grid-column:span 2}}
@media (max-width:560px){.pj{grid-template-columns:1fr}.pj a:nth-child(1){grid-column:span 1}}

/* band */
.band{position:relative;color:#fff;overflow:hidden}
.band>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.band::before{content:"";position:absolute;inset:0;background:rgba(10,18,30,.72);z-index:1}
.band .wrap{position:relative;z-index:2;padding-block:clamp(80px,10vw,130px)}
.band h2{font-size:clamp(26px,3.2vw,42px);font-weight:700;max-width:20em}
.band h2 strong{color:#8DB4F0}
.band .arealinks a{border-color:rgba(255,255,255,.3);color:#fff}
.band .arealinks a:hover{border-color:#fff;color:#fff}
.regions{display:flex;flex-wrap:wrap;gap:10px 36px;margin-top:40px;padding-top:28px;border-top:1px solid rgba(255,255,255,.25);font-size:17px}
.regions span b{font-weight:700;margin-left:6px;color:#8DB4F0;font-variant-numeric:tabular-nums}
.band .note{margin-top:18px;font-size:13px;opacity:.65}

/* latest */
.board{border-top:2px solid var(--text)}
.board a{display:grid;grid-template-columns:110px 90px 1fr auto;gap:20px;align-items:center;padding:22px 6px;border-bottom:1px solid var(--line);transition:background .2s}
.board a:hover{background:var(--bg-2)}
.board a:hover .t{color:var(--blue)}
.board .d{color:var(--sub);font-size:15px;font-variant-numeric:tabular-nums}
.board .r{font-size:14px;font-weight:500;color:var(--blue)}
.board .t{font-weight:500;font-size:17px}
.board .go{color:var(--sub);font-size:14px}
@media (max-width:700px){.board a{grid-template-columns:1fr;gap:4px}.board .go{display:none}}

/* contact */
.contact{background:var(--blue);color:#fff}
.contact .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding-block:clamp(72px,9vw,110px)}
.contact h2{font-size:clamp(28px,3.4vw,44px);font-weight:700}
.contact p{margin-top:16px;opacity:.9}
.offices{display:grid;gap:14px}
.office{display:grid;grid-template-columns:1fr auto;align-items:center;gap:6px 20px;background:#fff;color:var(--text);padding:24px 28px;transition:background .25s,color .25s}
.office:hover{background:var(--ink);color:#fff}
.office em{font-style:normal;font-weight:700;font-size:15px}
.office small{grid-column:1;font-size:14px;opacity:.7}
.office b{grid-row:1/3;grid-column:2;font-size:clamp(22px,2.4vw,30px);font-weight:900;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
@media (max-width:900px){.contact .wrap{grid-template-columns:1fr}}
@media (max-width:440px){.office{grid-template-columns:1fr}.office b{grid-row:auto;grid-column:1}}

/* footer */
.ftr{background:var(--ink);color:var(--sub-d);font-size:14px;padding-block:48px calc(48px + env(safe-area-inset-bottom,0px))}
.ftr .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.ftr b{color:#fff;font-size:17px}
.ftr p{margin-top:10px;line-height:1.9}
.ftr .todo{color:#F2B872}

/* mobile call bar */
.callbar{display:none}
@media (max-width:700px){
  .callbar{position:fixed;left:0;right:0;bottom:0;z-index:50;display:grid;grid-template-columns:1fr 1fr;padding-bottom:env(safe-area-inset-bottom,0px);background:var(--ink)}
  .callbar a{display:flex;align-items:center;justify-content:center;height:58px;color:#fff;font-weight:700}
  .callbar a:first-child{background:var(--blue)}
  .ftr{padding-bottom:calc(110px + env(safe-area-inset-bottom,0px))}
}

/* reveal */
.rv{transition:opacity .9s ease,transform .9s cubic-bezier(.2,.8,.2,1)}
.rv.pre{opacity:.001;transform:translateY(40px)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .slide.on img,.hero-txt .rise,.hero-nav .bar i.run{animation:none}
  .hero-txt .rise{opacity:1;transform:none}
  .rv,.rv.pre{opacity:1;transform:none;transition:none}
}

/* area pages */
.page-hero{position:relative;color:#fff;background:var(--ink);overflow:hidden;padding-top:calc(78px + env(safe-area-inset-top,0px))}
.page-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.32}
.page-hero .wrap{position:relative;z-index:2;padding-block:clamp(48px,7vw,84px)}
.page-hero .crumb{font-size:14px;color:#B9C4D2}
.page-hero h1{font-size:clamp(28px,4vw,48px);font-weight:900;margin-top:14px}
.page-hero p{margin-top:16px;color:#D3DBE4;max-width:44em}
.page-hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.doc{max-width:860px}
.doc h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;margin-top:56px}
.doc h2:first-child{margin-top:0}
.doc p{margin-top:16px;color:var(--sub);font-size:17px}
.doc ul{margin-top:16px;padding-left:20px;color:var(--sub);font-size:17px}
.doc li{margin-top:8px}
.doc .callout{margin-top:28px;border-left:3px solid var(--blue);background:var(--bg-2);padding:20px 24px}
.doc .callout p{margin-top:0;color:var(--text);font-weight:500}
.caselist{margin-top:24px;border-top:2px solid var(--text)}
.caselist a{display:grid;grid-template-columns:100px 1fr auto;gap:16px;align-items:center;padding:16px 4px;border-bottom:1px solid var(--line)}
.caselist a:hover{background:var(--bg-2)}
.caselist .d{color:var(--sub);font-size:15px}
.caselist .t{font-weight:500}
.caselist .go{color:var(--sub);font-size:14px}
@media (max-width:640px){.caselist a{grid-template-columns:1fr;gap:4px}.caselist .go{display:none}}
.arealinks{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.arealinks a{border:1px solid var(--line);padding:9px 16px;font-size:15px}
.arealinks a:hover{border-color:var(--blue);color:var(--blue)}
.area-group{margin-top:36px}
.area-group h3{font-size:18px;font-weight:700}