:root{
  --navy:#003763;
  --navy-d:#062138;
  --band-1:#0a2540;
  --band-2:#0c4a80;
  --red:#e4573d;
  --link:#0067b1;
  --gray:#58595b;
  --line:#d5d8dc;
  --bg:#ffffff;
  --bg-2:#f4f6f8;
  --font:"Source Sans 3","Pretendard",-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  --max:1280px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:#1d1f22;font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all}
img{display:block;width:100%;height:100%;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.box{max-width:calc(var(--max) + 96px);margin:0 auto;padding:0 48px}
.eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.bar{display:block;width:40px;height:4px;background:var(--red);margin-top:18px}
.center{text-align:center}.center .bar{margin-left:auto;margin-right:auto}
.just{text-align:justify;word-break:normal}
.more{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:600}
.more::after{content:"→";transition:transform .2s}
.more:hover::after{transform:translateX(4px)}


/* 머리 */
header{position:fixed;left:0;right:0;top:0;z-index:50;color:#fff;background:transparent;transition:transform .35s ease,background-color .3s ease}
header.solid{background:var(--navy-d);box-shadow:0 1px 0 rgba(255,255,255,.08)}
header.hide{transform:translateY(-100%)}
header .box{height:84px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:26px;line-height:1;letter-spacing:-.025em;white-space:nowrap}
.logo b{font-weight:700}
.logo span{font-weight:400;font-size:.8em;letter-spacing:-.01em;margin-left:1px}
.gnb{display:flex;gap:34px}
.gnb a{font-size:14px;font-weight:600;letter-spacing:.05em;padding:6px 0;border-bottom:2px solid transparent}
.gnb a:hover{border-bottom-color:var(--red)}
.burger{display:none;width:30px;height:22px;background:none;border:0;position:relative;cursor:pointer;color:#fff}
.burger::before,.burger::after,.burger span{content:"";position:absolute;left:0;right:0;height:2px;background:currentColor}
.burger::before{top:2px}.burger span{top:10px}.burger::after{top:18px}

/* 첫 화면 */
.hero{position:relative;height:100vh;min-height:720px;background:var(--navy-d);color:#fff;overflow:hidden}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.slide.on{opacity:1;z-index:1}
.slide img{transform:scale(1.06);transition:transform 7s linear}
.slide.on img{transform:scale(1)}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,33,56,.88) 0%,rgba(6,33,56,.55) 45%,rgba(6,33,56,.15) 100%)}
.slide .txt{position:absolute;z-index:2;left:0;right:0;top:220px}
.slide h1,.slide h2{max-width:720px;font-size:64px;line-height:1.22;font-weight:600;letter-spacing:-.02em;margin-top:14px}
.slide p{max-width:560px;margin-top:22px;font-size:18px;line-height:1.6}
.slide .more{margin-top:26px;font-size:15px}
.tabs{position:absolute;z-index:3;left:0;right:0;bottom:40px}
.tabs .box{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.s-strips{background:radial-gradient(ellipse at 70% 40%,#0b2c52 0%,#061a31 70%)}
.s-strips::after{display:none}
.strips{position:absolute;z-index:1;right:max(48px,calc((100vw - var(--max))/2 + 20px));top:130px;width:630px;height:560px}
.strip{position:absolute;top:0;width:56px;overflow:hidden;opacity:0;transform:translateY(60px);transition:opacity .9s ease,transform 1.2s cubic-bezier(.2,.7,.2,1)}
.s-strips.on .strip{opacity:1;transform:none}
.strip i{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.75) brightness(.9);transition:opacity 1.4s ease}
.strip i.b{opacity:0}
.strip.x i.a{opacity:0}.strip.x i.b{opacity:1}
.tab{display:flex;gap:12px;align-items:center;text-align:left;background:rgba(6,33,56,.55);border:0;border-bottom:3px solid transparent;color:#fff;padding:10px;cursor:pointer;transition:background .2s}
.tab:hover{background:rgba(6,33,56,.8)}
.tab.on{border-bottom-color:var(--red);background:rgba(6,33,56,.85)}
.tab img{width:80px;height:52px;flex:none}
.tab small{display:block;font-size:11px;opacity:.85}
.tab b{display:block;font-size:14px;font-weight:600;line-height:1.35}

/* 소개 */
.intro{padding:110px 0 0;background:linear-gradient(#fff 0,#fff 62%,var(--band-1) 62%)}
.intro .eyebrow{color:var(--gray)}
.intro h2{max-width:780px;margin:14px auto 0;font-size:40px;line-height:1.35;font-weight:600;color:var(--navy);letter-spacing:-.02em}
.cards3{margin-top:72px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.c-img{position:relative;height:420px;color:#fff;overflow:hidden;display:block}
.c-img img{transition:transform .8s}
.c-img:hover img{transform:scale(1.05)}
.c-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,33,56,.85) 0%,rgba(6,33,56,.2) 55%,rgba(6,33,56,0) 100%)}
.c-img .t{position:absolute;z-index:1;left:28px;right:28px;top:28px}
.intro .c-img .eyebrow{font-size:12px;color:#fff}
.c-img h3{margin-top:8px;font-size:28px;line-height:1.3;font-weight:600}
.c-img p{margin-top:14px;font-size:15px;line-height:1.65;opacity:.9}
.intro .sub{max-width:720px;margin:22px auto 0;font-size:17px;line-height:1.75;color:var(--gray)}
.c-white{background:#fff;height:420px;padding:36px 32px;border:1px solid var(--line);display:flex;flex-direction:column}
.c-white h3{font-size:28px;line-height:1.3;font-weight:600;color:var(--navy)}
.c-white p{margin-top:18px;font-size:15px;line-height:1.7;color:var(--gray)}
.c-white .go{margin-top:auto;width:36px;height:36px;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform .2s}
.c-white:hover .go{transform:translateX(4px)}

/* 파란 띠 */
.band{background:linear-gradient(180deg,var(--band-1) 0%,var(--band-2) 100%);color:#fff;padding:130px 0 130px}
.band .eyebrow{font-size:11px}
.band .lead{margin-top:10px;font-size:26px;line-height:1.4;font-weight:600}
.band .sub{max-width:680px;margin:16px auto 0;font-size:16px;line-height:1.75;opacity:.85}
.feat{margin-top:56px;position:relative}
.feat-win{overflow:hidden}
.feat-track{display:flex;transition:transform .7s cubic-bezier(.3,.7,.2,1)}
.feat-item{position:relative;flex:0 0 100%;height:500px;overflow:hidden}
.feat-item::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,33,56,.9) 0%,rgba(6,33,56,.25) 55%,rgba(6,33,56,0) 100%)}
.feat-item .t{position:absolute;z-index:1;left:56px;right:56px;bottom:52px}
.feat-item .eyebrow{font-size:11px}
.feat-item h3{margin-top:10px;max-width:760px;font-size:46px;line-height:1.25;font-weight:400;letter-spacing:-.01em}
.feat-item p{margin-top:14px;max-width:620px;font-size:16px;opacity:.9}
.feat-ctl{margin-top:22px;display:flex;justify-content:space-between;align-items:center}
.count{font-size:14px}.count i{font-style:normal;opacity:.5;margin:0 4px}
.circles{display:flex;gap:10px}
.circles button{width:32px;height:32px;border-radius:50%;border:0;background:rgba(255,255,255,.88);color:var(--navy);font-size:15px;cursor:pointer}
.circles button:hover{background:#fff}

.rep{margin-top:140px}
.rep-head{display:flex;justify-content:space-between;align-items:end;gap:40px}
.rep-head h2{font-size:40px;line-height:1.25;font-weight:600}
.rep-head p{margin-top:24px;max-width:620px;font-size:16px}
.rep-cards{margin-top:40px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rc{background:#fff;color:#1d1f22;display:flex;flex-direction:column;min-height:500px}
.rc .t{padding:28px 26px}
.rc .eyebrow{font-size:11px;color:var(--gray)}
.rc h3{margin-top:8px;font-size:23px;line-height:1.3;font-weight:600;color:var(--navy)}
.rc p{margin-top:10px;font-size:15px;line-height:1.65;color:var(--gray)}
.rc .ph{margin-top:auto;height:190px;overflow:hidden}

/* 일하는 방식 */
.steps-sec{padding:120px 0}
.steps-sec h2{font-size:40px;line-height:1.25;font-weight:600;color:var(--navy)}
.steps-sec .sub{margin-top:22px;max-width:640px;font-size:16px;line-height:1.75;color:var(--gray)}
.steps{margin-top:48px;display:grid;grid-template-columns:repeat(5,1fr);gap:24px;list-style:none}
.steps li{border-top:1px solid #9aa1a8;padding-top:18px}
.steps .eyebrow{font-size:12px;color:var(--gray)}
.steps h3{margin-top:10px;font-size:22px;font-weight:600;color:var(--navy)}
.steps p{margin-top:8px;font-size:15px;line-height:1.65;color:var(--gray)}

/* 나란히 */
.split{padding:20px 0 140px}
.split .box{display:grid;grid-template-columns:5fr 7fr;gap:60px;align-items:center}
.split .eyebrow{font-size:12px;color:var(--gray)}
.split h2{margin-top:12px;font-size:38px;line-height:1.3;font-weight:600;color:var(--navy)}
.split p{margin-top:20px;font-size:16px;line-height:1.7;color:var(--gray);max-width:480px}
.checks{margin-top:24px;list-style:none;display:grid;gap:10px}
.checks li{position:relative;padding-left:26px;font-size:15px;font-weight:600;color:var(--navy)}
.checks li::before{content:"";position:absolute;left:0;top:7px;width:14px;height:8px;border-left:2px solid var(--red);border-bottom:2px solid var(--red);transform:rotate(-45deg)}
.btn-red{display:inline-flex;align-items:center;gap:8px;margin-top:30px;background:var(--red);color:#fff;font-size:15px;font-weight:600;padding:12px 22px;transition:background .2s}
.btn-red::after{content:"→"}
.btn-red:hover{background:#c8442c}
.collage{position:relative;height:500px}
.collage .a{position:absolute;right:0;top:0;width:76%;height:100%}
.collage .r{position:absolute;left:0;top:26%;width:24%;height:38%;background:var(--red)}
.collage .g{position:absolute;left:8%;top:40%;width:30%;height:50%;overflow:hidden;border:0}
.collage .g img{filter:grayscale(1) brightness(1.15)}

/* 문의 */
.cta{position:relative;height:520px;overflow:hidden}
.cta>img{position:absolute;inset:0}
.cta .box{position:relative;height:100%;display:flex;align-items:center}
.cta-card{background:#fff;padding:44px 40px;width:430px}
.cta-card .eyebrow{font-size:12px;color:var(--gray)}
.cta-card h2{margin-top:10px;font-size:26px;line-height:1.35;font-weight:600;color:var(--navy)}
.cta-card p{margin-top:14px;font-size:15px;line-height:1.7;color:var(--gray)}
.cta-tel{margin-top:26px;display:flex}
.cta-tel span{flex:1;border:1px solid #c5cad0;border-right:0;padding:11px 14px;font-size:18px;font-weight:600;color:var(--navy);letter-spacing:.02em}
.cta-tel a{background:var(--red);color:#fff;font-weight:600;font-size:15px;padding:12px 20px;display:flex;align-items:center;gap:6px}
.cta-tel a::after{content:"→"}

/* 꼬리 */
footer{background:var(--navy-d);color:#fff;padding:44px 0 26px}
.ft{display:flex;justify-content:space-between;align-items:center;gap:32px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.16)}
.ft-l{display:flex;align-items:center;gap:28px}
.ft .logo{font-size:24px}
.ft .tag{font-size:13px;color:rgba(255,255,255,.75)}
.ft .tel{font-size:13px;color:rgba(255,255,255,.75)}
.ft .tel b{margin-left:10px;font-size:18px;font-weight:600;color:#fff;letter-spacing:.02em}
.ft-bot{padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:rgba(255,255,255,.65)}

/* 맨 위로 */
.to-top{position:fixed;right:28px;bottom:28px;z-index:40;width:48px;height:48px;border:0;background:var(--red);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,transform .3s,visibility .3s,background .2s}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:#c8442c}
.to-top svg{width:20px;height:20px}

/* 1199px 이하 */
@media (max-width:1199px){
  .gnb{gap:22px}
  .slide h1,.slide h2{font-size:52px}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .strips{transform:scale(.72);transform-origin:right top}
  .split .box{gap:40px}
}
/* 모바일 */
@media (max-width:820px){
  body{font-size:15px}
  .box{padding:0 20px}
  header .box{height:64px}
  .logo{font-size:22px}
  .gnb{display:none}
  .burger{display:block}
  header.open{background:var(--navy-d)}
  header.open .gnb{display:flex;flex-direction:column;gap:0;position:absolute;top:64px;left:0;right:0;background:var(--navy-d);border-top:1px solid rgba(255,255,255,.15)}
  header.open .gnb a{padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.15);font-size:15px}
  .hero{height:700px;min-height:0}
  .intro h2 br{display:none}
  .strips{right:auto;left:50%;top:370px;transform:translateX(-50%) scale(.5);transform-origin:center top}
  .slide .txt{top:120px}
  .slide h1,.slide h2{font-size:34px;line-height:1.3}
  .slide p{font-size:16px;margin-top:16px}
  .tabs{bottom:20px}
  .tabs{bottom:28px}
  .tabs .box{grid-template-columns:repeat(4,1fr);gap:8px}
  .tab{padding:0;height:3px;background:rgba(255,255,255,.35);border:0}
  .tab.on{background:var(--red)}
  .tab img,.tab span{display:none}
  .intro{padding-top:80px;background:linear-gradient(#fff 0,#fff 30%,var(--band-1) 30%)}
  .intro h2{font-size:26px}
  .cards3{grid-template-columns:1fr;margin-top:44px;gap:16px}
  .c-img,.c-white{height:340px}
  .intro .sub{font-size:15px}
  .c-img h3,.c-white h3{font-size:24px}
  .band{padding:96px 0}
  .band .lead{font-size:21px}
  .feat-item{height:400px}
  .feat-item .t{left:22px;right:22px;bottom:28px}
  .feat-item h3{font-size:28px}
  .rep{margin-top:100px}
  .rep-head{flex-direction:column;align-items:start;gap:16px}
  .rep-head h2{font-size:30px}
  .rep-cards{grid-template-columns:1fr;gap:16px}
  .rc{height:auto}
  .rc .ph{height:170px}
  .steps-sec{padding:88px 0}
  .steps-sec h2{font-size:30px}
  .steps{grid-template-columns:1fr;gap:0}
  .steps li{padding:16px 0 22px}
  .split{padding:0 0 96px}
  .split .box{grid-template-columns:1fr}
  .split h2{font-size:28px}
  .collage{height:300px}
  .cta{height:auto}
  .cta .box{padding-top:200px;padding-bottom:0}
  .cta-card{width:100%;padding:32px 22px}
  .cta-card h2{font-size:22px}
  .ft{flex-direction:column;align-items:flex-start;gap:20px}
  .ft-l{flex-direction:column;align-items:flex-start;gap:10px}
  .ft .tel b{display:block;margin:4px 0 0}
  .ft-bot{flex-direction:column;gap:6px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}