/* =========================================================
   세움로직 — 디자인 시스템
   컨셉: 구조를 세우는 로직 (structural editorial)
   Pretendard + IBM Plex Mono / 네이비 · 쿨라이트 · 잉크
   ========================================================= */

:root{
  --ink:#15181f;
  --ink-soft:#373c46;
  --muted:#6c7079;
  --paper:#f5f6f9;
  --paper-2:#e9ecf2;
  --surface:#ffffff;
  --line:#d8dce4;
  --line-soft:#e6e9f0;
  --green:#1d3a6b;         /* 브랜드 네이비-블루 (링크·라벨·버튼) */
  --green-2:#2f5aa6;       /* 액센트 블루 */
  --green-ink:#0e1f3d;     /* 딥 네이비 (다크 밴드·푸터) — 아이콘 색 */
  --green-pale:#e9eef8;    /* 라이트 블루 틴트 */
  --signal:#2f5aa6;
  --shadow:0 1px 2px rgba(20,25,20,.04), 0 10px 30px rgba(20,25,20,.06);
  --maxw:1180px;
  --gut:clamp(20px,5vw,56px);
  --font-sans:'Pretendard',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --font-mono:'IBM Plex Mono','SFMono-Regular',ui-monospace,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  font-feature-settings:"ss01";
  overflow-x:hidden;
  word-break:keep-all;        /* 한글: 단어 단위로만 줄바꿈 (글자 중간 끊김 방지) */
  overflow-wrap:break-word;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.container--narrow{max-width:820px}

/* ---------- 타이포 유틸 ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--green);font-weight:500;
  display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--green);opacity:.5}
.eyebrow--plain::before{display:none}

.display{
  font-weight:760;letter-spacing:-.03em;line-height:1.16;
  font-size:clamp(38px,6.4vw,76px);text-wrap:balance;
}
h1,h2,h3{letter-spacing:-.02em;line-height:1.2;font-weight:720}
.h2{font-size:clamp(26px,3.6vw,40px);font-weight:740;letter-spacing:-.025em;line-height:1.22;text-wrap:balance}
.h3{font-size:clamp(18px,2vw,21px);font-weight:700}
.lead{font-size:clamp(17px,1.5vw,20px);color:var(--ink-soft);line-height:1.7;text-wrap:pretty}
p{color:var(--ink-soft)}
.muted{color:var(--muted)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 버튼 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-sans);font-size:15px;font-weight:600;
  padding:13px 22px;border-radius:2px;border:1px solid var(--green);
  background:var(--green);color:#f3f1e9;cursor:pointer;
  transition:background .22s,transform .22s,box-shadow .22s;
  letter-spacing:-.01em;
}
.btn .ar{transition:transform .22s}
.btn:hover{background:var(--green-ink);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,31,61,.26)}
.btn:hover .ar{transform:translateX(4px)}
.btn--ghost{background:transparent;color:var(--green);border-color:var(--line)}
.btn--ghost:hover{background:transparent;border-color:var(--green);color:var(--green-ink);box-shadow:none}
.btn--light{background:var(--paper);color:var(--green-ink);border-color:var(--paper)}
.btn--light:hover{background:#fff;color:var(--green-ink)}
.btn--sm{padding:9px 16px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--green);
  font-size:15px;border-bottom:1.5px solid transparent;padding-bottom:2px;
  transition:border-color .2s,color .2s;width:fit-content;
}
.link-arrow .ar{transition:transform .2s}
.link-arrow:hover{border-color:var(--green);color:var(--green-ink)}
.link-arrow:hover .ar{transform:translateX(4px)}

/* ---------- 헤더 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s,border-color .3s,box-shadow .3s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(243,241,233,.82);backdrop-filter:blur(12px);
  border-bottom-color:var(--line-soft);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:inline-flex;align-items:center;gap:11px;font-weight:740;font-size:17px;letter-spacing:-.02em}
.logo-mark{
  width:15px;height:15px;border:3px solid var(--green);border-radius:3px;
  transform:rotate(-12deg);transition:transform .4s cubic-bezier(.3,1.2,.4,1);
}
.logo:hover .logo-mark{transform:rotate(78deg)}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{
  font-size:15px;font-weight:500;color:var(--ink-soft);padding:8px 14px;border-radius:2px;
  position:relative;transition:color .2s;
}
.nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1.5px;
  background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.nav a:hover{color:var(--green-ink)}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1)}
.nav a.is-active{color:var(--green-ink);font-weight:600}
.header-cta{flex:0 0 auto}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--ink);transition:.25s}

/* ---------- 히어로 ---------- */
.hero{position:relative;padding:168px 0 96px;overflow:hidden}
.hero-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 70% 10%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 90% at 70% 10%,#000 30%,transparent 78%);
}
.hero-deco{
  position:absolute;right:calc(var(--gut) - 20px);top:120px;z-index:0;
  width:min(360px,38vw);aspect-ratio:1;border:1.5px solid var(--line);border-radius:32px;
  transform:rotate(-12deg);opacity:.6;pointer-events:none;
}
.hero-deco::after{
  content:"";position:absolute;inset:26px;border:1.5px solid var(--line);border-radius:22px;
}
.hero .container{position:relative;z-index:1}
.hero-coord{display:none}
.hero h1{margin:14px 0 28px;max-width:14ch}
.hero h1 em{font-style:normal;color:var(--green)}
.hero .lead{max-width:52ch}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}

/* 히어로 하단 메타 띠 */
.hero-meta{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);
  border:1px solid var(--line-soft);border-radius:4px;overflow:hidden;margin-top:64px;
}
.hero-meta div{background:var(--paper);padding:20px 22px}
.hero-meta dt{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.hero-meta dd{font-size:15px;color:var(--ink);font-weight:500;line-height:1.5}
@media(max-width:680px){.hero-meta{grid-template-columns:1fr}}

/* ---------- 섹션 ---------- */
.section{padding:clamp(72px,9vw,128px) 0;position:relative}
.section + .section{border-top:1px solid var(--line-soft)}
.section-head{margin-bottom:54px;max-width:760px}
.section-head .h2{margin:18px 0 0}
.section-head .lead{margin-top:20px}
.idx{font-family:var(--font-mono);font-size:12px;color:var(--muted);letter-spacing:.1em}

/* 다크 그린 밴드 */
.band{background:var(--green-ink);color:#e7ece8}
.band .eyebrow{color:#9bb6e2}
.band .eyebrow::before{background:#9bb6e2}
.band h2,.band .h2{color:#f1f3ef}
.band p,.band .lead{color:#b3c1da}
.band .idx{color:#7e8db0}

/* ---------- 서비스 리스트 ---------- */
.svc-list{border-top:1px solid var(--line)}
.svc-row{
  display:grid;grid-template-columns:64px 280px 1fr auto;gap:32px;align-items:start;
  padding:34px 0;border-bottom:1px solid var(--line);
  transition:padding-left .3s,background .3s;
}
.svc-row:hover{padding-left:12px}
.svc-row .num{font-family:var(--font-mono);font-size:13px;color:var(--green);padding-top:4px}
.svc-row .svc-name{font-size:20px;font-weight:700;letter-spacing:-.02em}
.svc-row .svc-name small{display:block;font-family:var(--font-mono);font-size:11.5px;font-weight:400;color:var(--muted);letter-spacing:.08em;margin-top:7px;text-transform:uppercase}
.svc-row .svc-desc{color:var(--ink-soft);font-size:15.5px;line-height:1.66;max-width:46ch}
.svc-row .svc-go{align-self:center;color:var(--green);font-size:20px;transition:transform .25s}
.svc-row:hover .svc-go{transform:translateX(5px)}
@media(max-width:860px){
  .svc-row{grid-template-columns:40px 1fr;gap:6px 18px}
  .svc-row .svc-desc{grid-column:2}
  .svc-row .svc-go{display:none}
}

/* ---------- 카드 그리드 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:4px;overflow:hidden}
.card{background:var(--surface);padding:34px 30px;transition:background .25s}
.card:hover{background:#fff}
.card .num{font-family:var(--font-mono);font-size:12px;color:var(--green);letter-spacing:.1em;margin-bottom:18px}
.card h3{margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.62}

/* ---------- 작업 사례 ---------- */
.case{padding:clamp(56px,7vw,92px) 0;border-bottom:1px solid var(--line-soft)}
.case:last-child{border-bottom:none}
.case-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(28px,5vw,68px);align-items:center}
.case:nth-child(even) .case-grid{direction:rtl}
.case:nth-child(even) .case-grid > *{direction:ltr}
@media(max-width:840px){.case-grid{grid-template-columns:1fr;gap:26px}.case:nth-child(even) .case-grid{direction:ltr}}
.case-no{font-family:var(--font-mono);font-size:12.5px;color:var(--green);letter-spacing:.1em;margin-bottom:14px}
.case-info h3{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.case-info .tag{color:var(--muted);font-size:16px;margin-bottom:22px}
.case-info p{font-size:15.5px;margin-bottom:14px;line-height:1.68}
.case-info b{color:var(--ink);font-weight:600}
.case-stack{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{font-family:var(--font-mono);font-size:12px;color:var(--green);background:var(--green-pale);border:1px solid #cdd9ef;padding:5px 11px;border-radius:2px;letter-spacing:.02em}
.shot{border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.shot img{width:100%}
.shot figcaption{font-size:12.5px;color:var(--muted);padding:11px 15px;border-top:1px solid var(--line-soft);background:var(--paper-2)}

/* spec 테이블 (스크린샷 없는 사례) */
.spec{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.spec .r{display:grid;grid-template-columns:128px 1fr;border-top:1px solid var(--line-soft);font-size:14.5px}
.spec .r:first-child{border-top:none}
.spec .r .l{background:var(--paper-2);padding:14px 16px;font-weight:600;color:#3c4036;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.03em;display:flex;align-items:center}
.spec .r .v{padding:14px 16px;color:var(--ink-soft)}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-family:var(--font-mono);font-size:12.5px;color:var(--green);font-weight:500}
.flow .s{background:var(--green-pale);border:1px solid #cdd9ef;border-radius:2px;padding:5px 10px}
.flow .a{color:var(--muted)}

/* ---------- 프로세스 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line-soft);border-radius:4px;overflow:hidden;background:var(--line-soft)}
.steps .st{background:var(--surface);padding:30px 26px}
.steps .st .n{font-family:var(--font-mono);font-size:13px;color:var(--green);margin-bottom:auto;letter-spacing:.1em}
.steps .st h3{font-size:17px;margin:18px 0 9px}
.steps .st p{font-size:14px;line-height:1.6}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ---------- 큰 인용/스테이트먼트 ---------- */
.statement{font-size:clamp(24px,3.4vw,40px);font-weight:680;letter-spacing:-.025em;line-height:1.34;max-width:18ch;text-wrap:balance}
.statement em{font-style:normal;color:var(--green)}
.band .statement em{color:#9bb6e2}

/* ---------- 통계 ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,4vw,48px)}
.stat .v{font-size:clamp(34px,5vw,56px);font-weight:740;letter-spacing:-.03em;line-height:1;color:var(--green)}
.band .stat .v{color:#cdd9ef}
.stat .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);margin-top:14px;text-transform:uppercase}
.band .stat .k{color:#8794b2}
@media(max-width:680px){.stats{grid-template-columns:1fr;gap:28px}}

/* ---------- CTA 밴드 ---------- */
.cta-band{padding:clamp(72px,9vw,120px) 0}
.cta-band .h2{max-width:16ch}
.cta-band .actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 문의 폼 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(32px,6vw,80px)}
@media(max-width:840px){.contact-grid{grid-template-columns:1fr;gap:40px}}
.contact-info .item{padding:18px 0;border-top:1px solid var(--line-soft)}
.contact-info .item:first-of-type{border-top:none}
.contact-info .item dt{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.contact-info .item dd{font-size:16px;color:var(--ink)}
.form{display:grid;gap:18px}
.field{display:grid;gap:7px}
.field label{font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:var(--ink-soft);text-transform:uppercase}
.field input,.field textarea,.field select{
  font-family:var(--font-sans);font-size:15px;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:3px;
  padding:13px 15px;transition:border-color .2s,box-shadow .2s;width:100%;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(29,58,107,.13);
}
.field textarea{resize:vertical;min-height:140px}
.form-note{font-size:13px;color:var(--muted)}
.form-msg{padding:14px 16px;border-radius:3px;font-size:14.5px;display:none;margin-bottom:4px}
.form-msg.ok{background:var(--green-pale);border:1px solid #cdd9ef;color:var(--green-ink)}
.form-msg.err{background:#f6e7e1;border:1px solid #e6cabd;color:#8a4124}

/* ---------- 푸터 ---------- */
.site-footer{background:var(--green-ink);color:#a4b0c8;padding:72px 0 40px;position:relative;overflow:hidden}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;position:relative;z-index:1}
@media(max-width:680px){.footer-grid{grid-template-columns:1fr;gap:36px}}
.footer-brand .logo{color:#f1f3ef;font-size:19px}
.footer-brand .logo-mark{border-color:#9bb6e2}
.footer-brand p{color:#8c9ab4;font-size:14.5px;margin-top:18px;max-width:34ch;line-height:1.65}
.footer-col h4{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:#7e8db0;margin-bottom:18px;font-weight:500}
.footer-col a{display:block;color:#b3c1da;font-size:14.5px;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);position:relative;z-index:1}
.footer-bottom .mono{font-size:12px;color:#6c7c98;letter-spacing:.04em}
.footer-watermark{position:absolute;right:-2%;bottom:-18%;font-weight:780;font-size:22vw;line-height:1;color:rgba(255,255,255,.025);letter-spacing:-.04em;z-index:0;pointer-events:none;white-space:nowrap}

/* ---------- 모션 (JS 켜진 경우에만 숨김 → 크롤러/JS-off 는 항상 보임) ---------- */
@media(prefers-reduced-motion:no-preference){
  .js [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.6,.2,1),transform .7s cubic-bezier(.2,.6,.2,1)}
  .js [data-reveal].in-view{opacity:1;transform:none}
  .js [data-reveal-stagger] > *{opacity:0;transform:translateY(16px);animation:rise .7s cubic-bezier(.2,.6,.2,1) forwards}
  [data-reveal-stagger] > *:nth-child(1){animation-delay:.05s}
  [data-reveal-stagger] > *:nth-child(2){animation-delay:.14s}
  [data-reveal-stagger] > *:nth-child(3){animation-delay:.23s}
  [data-reveal-stagger] > *:nth-child(4){animation-delay:.32s}
  [data-reveal-stagger] > *:nth-child(5){animation-delay:.41s}
  [data-reveal-stagger] > *:nth-child(6){animation-delay:.5s}
  @keyframes rise{to{opacity:1;transform:none}}
}

/* ---------- 모바일 네비 ---------- */
@media(max-width:820px){
  .nav,.header-cta{display:none}
  .nav-toggle{display:flex}
  .site-header.nav-open{background:var(--paper);border-bottom-color:var(--line)}
  .nav.open{
    display:flex;flex-direction:column;gap:0;position:absolute;top:72px;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:8px var(--gut) 20px;margin:0;
  }
  .nav.open a{padding:14px 0;font-size:17px;border-bottom:1px solid var(--line-soft)}
  .nav.open a::after{display:none}
  .nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-open .nav-toggle span:nth-child(2){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- 로고 이미지 ---------- */
.logo-img{height:30px;width:auto;display:block}
.logo-mark-img{display:none}
.site-footer .logo-img{height:32px;filter:brightness(0) invert(1);opacity:.95}
@media(max-width:600px){
  .site-header .logo-full{display:none}
  .site-header .logo-mark-img{display:block;height:30px}
}

/* ---------- 유틸 ---------- */
.mt-0{margin-top:0}
.center{text-align:center}
.divider{height:1px;background:var(--line-soft);border:none;margin:0}

/* ---------- 모바일 최적화 ---------- */
@media(max-width:820px){
  .logo-img{height:28px}
}
@media(max-width:680px){
  .section{padding:64px 0}
  .hero{padding:120px 0 60px}
  .hero-deco{display:none}
  .hero-coord{margin-bottom:18px;font-size:10.5px}
  .hero h1{max-width:none}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .hero-meta{margin-top:38px}
  .section-head{margin-bottom:34px}
  .case{padding:44px 0}
  .statement{font-size:clamp(22px,7vw,32px);max-width:none}
  .cta-band .actions .btn{flex:1 1 auto;justify-content:center}
  .footer-watermark{font-size:30vw;bottom:-10%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media(max-width:480px){
  :root{--gut:18px}
  .display{font-size:clamp(30px,8.6vw,40px);line-height:1.2}
  .h2{font-size:clamp(23px,6.4vw,30px)}
  .lead{font-size:16px}
  .btn{padding:12px 18px}
  .svc-row .svc-name{font-size:18px}
  .spec .r{grid-template-columns:100px 1fr}
  .spec .r .l{padding:12px 12px;font-size:11.5px}
  .spec .r .v{padding:12px 13px}
}