:root{
  --bg:#ffffff; --bg-2:#f5f6f8; --line:#e5e8ec; --line-2:#d3d8de;
  --text:#111418; --muted:#5b6573; --dim:#8b95a3;
  --brand:#f26a1b; --brand-2:#e2231a; --brand-grad:linear-gradient(135deg,#ff8a1f 0%,#ff5a1f 45%,#e2231a 100%);
  --dark:#0d1117;
  --radius:16px; --max:1240px; --header:100px;
  --en:"Space Grotesk",Pretendard,system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:Pretendard,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;line-height:1.7;word-break:keep-all;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.en{font-family:var(--en)}
.grad-text{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.h2{font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.03em}
.lead{font-size:clamp(16px,1.3vw,18px);color:var(--muted);max-width:680px;margin-top:18px}

/* reveal */
.rv{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* header */
header{position:fixed;inset:0 0 auto;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .3s}
header.scrolled{box-shadow:0 6px 24px rgba(13,17,23,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--header);gap:24px}
.logo{display:flex;align-items:center;flex:none}
.logo img{height:72px;width:auto}
.menu{display:flex;gap:4px;list-style:none}
.menu a{display:block;font-size:16px;font-weight:600;color:#343b45;padding:10px 16px;border-radius:999px;transition:color .2s,background .2s}
.menu a:hover{background:var(--bg-2);color:var(--text)}
.menu a.active{color:var(--brand)}
.menu li{position:relative}
.menu .sub{display:none;position:absolute;top:100%;left:0;min-width:140px;list-style:none;padding:8px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 30px -12px rgba(0,0,0,.18)}
.menu .has-sub:hover .sub,.menu .has-sub:focus-within .sub{display:block}
.menu .sub a{font-size:15px;white-space:nowrap}
.nav-cta{font-size:15px;font-weight:700;padding:11px 22px;border-radius:999px;background:var(--dark);color:#fff;flex:none;transition:background .2s}
.nav-cta:hover{background:var(--brand)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:12px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.burger span,.burger span::before,.burger span::after{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.3s}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.menu-open .burger span{background:transparent}
body.menu-open .burger span::before{top:0;transform:rotate(45deg)}
body.menu-open .burger span::after{top:0;transform:rotate(-45deg)}

main{padding-top:var(--header)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15px;padding:15px 26px;border-radius:999px;transition:transform .25s,box-shadow .25s,background .25s,color .25s}
.btn svg{width:18px;height:18px;transition:transform .25s}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 30px -10px rgba(242,106,27,.7)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:var(--brand)}
.btn-line{border:1px solid var(--line-2);color:var(--text);background:#fff}
.btn-line:hover{border-color:var(--text)}
.btn-white{background:#fff;color:var(--text)}
.btn-glass{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-glass:hover{background:rgba(255,255,255,.12)}

/* home hero */
.hero{position:relative;height:calc(100vh - var(--header));height:calc(100svh - var(--header));min-height:560px;max-height:900px;overflow:hidden;background:var(--dark);color:#fff;display:flex;align-items:flex-end}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,9,13,.82) 0%,rgba(7,9,13,.35) 55%,rgba(7,9,13,.15) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;padding-bottom:clamp(56px,9vh,110px)}
.hero h1{font-family:var(--en);font-size:clamp(44px,7vw,100px);line-height:.98;letter-spacing:-.045em;font-weight:700}
.hero-sub{font-size:clamp(18px,1.8vw,24px);font-weight:700;margin-top:26px;letter-spacing:-.01em}
.hero-desc{color:rgba(255,255,255,.8);margin-top:10px;max-width:560px;font-size:17px}
.hero-btns{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}

/* sub page header */
.page-head{padding:90px 0 56px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(34px,4.6vw,58px);font-weight:800;letter-spacing:-.035em;line-height:1.2}
.page-head p{font-size:clamp(16px,1.4vw,19px);color:var(--muted);margin-top:16px;max-width:720px}

.sec{padding:110px 0}
.sec.alt{background:var(--bg-2)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:50px}
.more{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--text);border-bottom:2px solid var(--brand);padding-bottom:4px}
.more:hover{color:var(--brand)}

/* photo helpers */
.ph{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--bg-2)}
.ph img,.ph video{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
a.ph:hover img,.tile:hover .ph img{transform:scale(1.04)}

/* home: business tiles */
.tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pair .ph{aspect-ratio:3/4}
.tile{display:flex;flex-direction:column}
.tile .ph{aspect-ratio:4/5}
.tile h3{font-size:21px;font-weight:800;letter-spacing:-.02em;margin-top:20px}
.tile p{color:var(--muted);font-size:15px;margin-top:6px}

/* home: project strip */
.strip{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:260px 260px;gap:16px}
.strip .ph:first-child{grid-row:span 2}
.strip .ph:nth-child(4){grid-column:span 2}
.cap-txt{position:absolute;left:0;right:0;bottom:0;padding:40px 22px 18px;color:#fff;font-weight:700;font-size:16px;background:linear-gradient(to top,rgba(7,9,13,.7),transparent)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.stat{padding:38px 32px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .num{font-family:var(--en);font-size:clamp(40px,4.4vw,60px);font-weight:600;letter-spacing:-.04em;line-height:1}
.stat .num sup{font-size:.4em;color:var(--brand);vertical-align:top;margin-left:4px}
.stat p{color:var(--muted);font-size:15px;margin-top:12px}

/* CTA */
.cta-band{border-radius:24px;padding:64px 56px;background:var(--brand-grad);display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-band h3{font-size:clamp(26px,3vw,40px);font-weight:800;letter-spacing:-.03em;line-height:1.3;color:#fff}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}

/* about */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.split.img-wide{grid-template-columns:.8fr 1.2fr;gap:48px}
.quote{font-size:clamp(26px,3vw,40px);font-weight:800;line-height:1.4;letter-spacing:-.03em}
.quote em{font-style:normal;color:var(--text)}
.body-txt p{color:#3d4550;font-size:17px;line-height:1.9}
.body-txt p+p{margin-top:16px}
.ov-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ov{border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;background:#fff}
.ov dt{font-size:14px;font-weight:700;color:var(--brand)}
.ov dd{margin-top:8px;font-size:18px;font-weight:700;letter-spacing:-.01em}
.ov dd span{display:block;color:var(--muted);font-weight:500;font-size:15px;margin-top:4px}
.ov.wide{grid-column:span 2}
.vision{max-width:860px}
.vision .eyebrow{font-family:var(--en);font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.vision-q{font-size:clamp(28px,3.6vw,46px);font-weight:800;line-height:1.35;letter-spacing:-.035em;margin-top:18px}
.vision-sub{color:#3d4550;font-size:17px;line-height:1.9;margin-top:24px;max-width:720px}
.val-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
.val{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px}
.val h3{font-size:22px;font-weight:800;letter-spacing:-.02em;margin-top:0}
.val p{color:var(--muted);font-size:15px;line-height:1.75;margin-top:10px}
@media (max-width:1080px){.val-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.val-grid{grid-template-columns:1fr}}

/* business */
.biz-row{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.biz-row+.biz-row{margin-top:110px}
.biz-row.rev>.pair{order:2}
.biz-row .ph{aspect-ratio:16/11}
.biz-row .pair{grid-template-columns:1fr;gap:16px}
.biz-row .pair .ph{aspect-ratio:16/9}
.biz-row h2{font-size:clamp(28px,3vw,40px);font-weight:800;letter-spacing:-.03em;line-height:1.25}
.biz-row h2 small{display:block;font-family:var(--en);font-size:.5em;color:var(--brand);font-weight:600;letter-spacing:0;margin-bottom:8px}
.biz-row p{color:var(--muted);font-size:17px;margin-top:16px}
.checks{list-style:none;margin-top:26px;display:grid;gap:12px}
.checks li{display:flex;gap:12px;align-items:center;font-size:17px;font-weight:600;padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:#fff}
.checks li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none}

/* capability */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.chip{font-size:15px;font-weight:600;padding:8px 14px;border-radius:999px;border:1px solid var(--line-2);color:#343b45;background:#fff}
.rings{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ring-card{border:1px solid var(--line);border-radius:20px;padding:26px;background:#fff}
.ring-card h4{font-size:20px;font-weight:800}
.ring{width:100%;max-width:200px;margin:18px auto 4px;aspect-ratio:1}
.ring circle{fill:none;stroke-width:22}
.ring circle.seg{cursor:pointer;stroke-dasharray:0 1000;transition:stroke-dasharray 1.4s cubic-bezier(.2,.7,.2,1),stroke-width .3s,opacity .3s}
.ring circle.seg:hover{stroke-width:28}
.ring text{fill:var(--text);font-family:var(--en);font-size:16px;font-weight:700;text-anchor:middle}
.legend{list-style:none;display:flex;flex-direction:column;gap:6px;margin-top:14px}
.legend li{display:flex;gap:12px;align-items:flex-start;font-size:15px;padding:8px 10px;border-radius:10px;transition:background .2s}
.legend li.hl{background:var(--bg-2)}
.legend li i{width:10px;height:10px;border-radius:3px;flex:none;margin-top:7px}
.legend li span{color:var(--muted);display:block;font-size:14px}
.rnd-q{font-family:var(--en);font-size:clamp(50px,6.4vw,92px);font-weight:700;letter-spacing:-.05em;line-height:.98}
.rnd-q span{color:var(--brand-2)}
.kicker{font-size:20px;font-weight:800;margin-top:26px;letter-spacing:-.02em}
.mon-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mon-grid .ph{aspect-ratio:4/3}

/* projects gallery */
.filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:34px}
.filter button{font:inherit;font-size:15px;font-weight:700;padding:10px 18px;border-radius:999px;border:1px solid var(--line-2);background:#fff;color:#343b45;cursor:pointer}
.filter button.on{background:var(--dark);border-color:var(--dark);color:#fff}
.gallery{columns:3;column-gap:16px}
.gallery figure{break-inside:avoid;margin-bottom:16px;cursor:zoom-in}
.gallery .ph{border-radius:14px}
.gallery figcaption{font-size:15px;font-weight:600;margin-top:10px;color:#343b45}
.videos{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.vcard{cursor:pointer}
.vcard .ph{aspect-ratio:16/10;background:#000}
.vcard .ph img{object-fit:cover}
.vcard:hover .ph img{transform:scale(1.04)}
.vcard .play{position:absolute;inset:0;display:grid;place-items:center}
.vcard .play i{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.3);transition:transform .25s}
.vcard:hover .play i{transform:scale(1.08)}
.vcard .play svg{width:22px;height:22px;margin-left:4px;color:var(--brand)}
.vcard h3{font-size:16px;font-weight:700;margin-top:10px}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(7,9,13,.92);display:none;align-items:center;justify-content:center;padding:60px 20px}
.lightbox.open{display:flex}
.lightbox img,.lightbox video{max-width:min(1400px,100%);max-height:100%;border-radius:10px}
.lightbox .x{position:absolute;top:18px;right:18px;width:48px;height:48px;border-radius:50%;border:0;background:rgba(255,255,255,.14);color:#fff;font-size:26px;cursor:pointer}
.lightbox .x:hover{background:rgba(255,255,255,.26)}

/* history */
.hist-layout{display:grid;grid-template-columns:260px 1fr;gap:64px}
.years{position:sticky;top:calc(var(--header) + 30px);align-self:start;display:flex;flex-direction:column;gap:2px}
.year-btn{font-family:var(--en);text-align:left;background:none;border:0;color:var(--dim);font-size:22px;font-weight:600;padding:9px 0;cursor:pointer;display:flex;align-items:center;gap:16px;transition:color .3s;width:100%}
.year-btn::before{content:"";height:2px;width:18px;background:currentColor;transition:width .4s,background .3s}
.year-btn:hover{color:var(--text)}
.year-btn.on{color:var(--text)}
.year-btn.on::before{width:52px;background:var(--brand)}
.hist-year{font-family:var(--en);font-size:clamp(64px,8vw,110px);font-weight:700;letter-spacing:-.05em;line-height:1;color:var(--text)}
.hist-list{list-style:none;margin-top:30px;border-top:2px solid var(--text)}
.hist-list li{display:grid;grid-template-columns:240px 1fr;gap:24px;padding:22px 4px;border-bottom:1px solid var(--line);opacity:0;transform:translateY(12px);animation:hin .5s cubic-bezier(.2,.7,.2,1) forwards}
@keyframes hin{to{opacity:1;transform:none}}
.hist-list .cl{font-weight:700;font-size:17px}
.hist-list .wk{color:#3d4550;font-size:17px}
.hist-list .tag{display:inline-block;font-size:13px;font-weight:700;padding:2px 9px;border-radius:6px;margin-left:8px;vertical-align:1px;background:#fff1e8;color:var(--brand)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.map-box{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);min-height:360px;background:var(--bg-2)}
.map-box iframe{width:100%;height:100%;min-height:360px;border:0;display:block}

footer{padding:50px 0 56px;border-top:1px solid var(--line);color:var(--muted);font-size:15px;background:#fff}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-end}
.foot .logo img{height:60px}
.foot address{font-style:normal;line-height:1.9;margin-top:16px}
.foot .copy{font-size:14px;color:var(--dim)}

/* responsive */
@media (max-width:1080px){
  .tiles{grid-template-columns:repeat(2,1fr)}
  .tile .ph{aspect-ratio:4/3}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .menu a{padding:10px 11px;font-size:15px}
  .gallery{columns:2}
  .videos{grid-template-columns:repeat(2,1fr)}
  .hist-layout{grid-template-columns:1fr;gap:28px}
  .years{position:static;flex-direction:row;overflow-x:auto;gap:8px;scrollbar-width:none;padding-bottom:6px}
  .years::-webkit-scrollbar{display:none}
  .year-btn{width:auto;flex:none;font-size:17px;padding:9px 16px;border:1px solid var(--line-2);border-radius:999px}
  .year-btn::before{display:none}
  .year-btn.on{background:var(--dark);color:#fff;border-color:var(--dark)}
}
@media (max-width:900px){
  :root{--header:80px}
  .wrap{padding:0 20px}
  .logo img{height:54px}
  .menu,.nav-cta{display:none}
  .burger{display:flex}
  body.menu-open .menu{display:flex;position:fixed;top:var(--header);left:0;right:0;bottom:0;flex-direction:column;padding:20px;background:#fff;gap:0}
  body.menu-open .menu .sub{display:block;position:static;border:0;box-shadow:none;padding:0 0 0 16px;min-width:0}
  body.menu-open .menu a{font-size:24px;font-weight:800;padding:16px 4px;border-radius:0;border-bottom:1px solid var(--line);background:none}
  .split,.split.img-wide,.biz-row{grid-template-columns:1fr;gap:36px}
  .biz-row.rev>.pair{order:0}
  .biz-row+.biz-row{margin-top:80px}
  .sec{padding:80px 0}
  .page-head{padding:60px 0 40px}
  .strip{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .strip .ph{aspect-ratio:4/3}
  .strip .ph:first-child{grid-row:auto;grid-column:span 2}
  .strip .ph:nth-child(4){grid-column:span 2}
  .ov-grid,.contact-grid{grid-template-columns:1fr}
  .ov.wide{grid-column:auto}
  .cta-band{padding:40px 28px}
  .hist-list li{grid-template-columns:1fr;gap:2px}
}
@media (max-width:560px){
  .tiles,.rings,.mon-grid,.videos{grid-template-columns:1fr}
  .gallery{columns:1}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0!important;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
}