:root{
  --bg:#212125;            /* 차콜 배경 */
  --panel:#2A2A2F;         /* 교차 섹션 패널 */
  --ink:#F5F5F7;           /* 본문 (밝게) */
  --ink-dim:#C2C3CB;       /* 보조 텍스트도 충분히 밝게 */
  --gray:#8E8F97;
  --crimson:#8A181C;       /* 로고 크림슨 (면 색상용) */
  --crimson-hi:#E0484E;    /* 검정 위 강조 텍스트용 밝은 크림슨 */
  --crimson-deep:#6E1216;
  --hairline:rgba(255,255,255,.16);
  --font:"Pretendard Variable", Pretendard, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--font);font-weight:400;
  font-size:18px;line-height:1.8;letter-spacing:-.01em;
}
::selection{background:var(--crimson);color:#fff}
a{color:inherit;text-decoration:none}
a[href^="tel:"]{color:inherit!important}
img{display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:130px 0}
h2{
  font-weight:800;
  font-size:clamp(34px,4.8vw,54px);line-height:1.18;letter-spacing:-.02em;
  margin:26px 0 24px;
}
.sec-label{
  font-weight:700;font-size:15px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--crimson-hi);display:flex;align-items:center;gap:14px;
}
.sec-label small{color:var(--gray);letter-spacing:.06em;font-size:15px;font-weight:500}
.sec-label::after{content:"";flex:1;height:1px;background:var(--hairline)}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--crimson-hi);outline-offset:3px}

/* ---------- 상단 내비게이션 ---------- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .3s,border-color .3s;border-bottom:1px solid transparent;
}
nav.solid{background:rgba(33,33,37,.92);backdrop-filter:blur(10px);border-color:var(--hairline)}
.nav-inner{
  max-width:1400px;margin:0 auto;padding:12px 22px;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
}
.menu-btn{
  justify-self:start;background:none;border:0;cursor:pointer;
  width:46px;height:46px;display:flex;flex-direction:column;justify-content:center;gap:7px;padding:10px;
}
.menu-btn span{display:block;height:2px;background:var(--ink)}
.nav-logo{justify-self:center}
.nav-logo img{height:56px;width:auto}
.nav-cta{
  justify-self:end;
  font-weight:700;font-size:15px;letter-spacing:.06em;
  padding:12px 24px;background:var(--crimson);color:#fff;transition:background .25s;
}
.nav-cta:hover{background:var(--crimson-deep)}
@media(max-width:560px){.nav-cta{display:none}}

/* ---------- 슬라이드 메뉴 ---------- */
.menu-panel{
  position:fixed;inset:0;z-index:70;background:var(--bg);
  transform:translateX(-100%);transition:transform .45s cubic-bezier(.7,0,.3,1);
  display:flex;flex-direction:column;overflow-y:auto;
}
.menu-panel.open{transform:none}
.menu-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 24px;border-bottom:1px solid var(--hairline);
}
.menu-head img{height:52px;width:auto}
.menu-close{background:none;border:0;font-size:34px;line-height:1;cursor:pointer;color:var(--ink);padding:8px 12px}
.menu-body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:40px 24px;max-width:760px;margin:0 auto;width:100%}
.menu-body a.mlink{
  display:flex;align-items:baseline;gap:20px;
  padding:18px 0;border-bottom:1px solid var(--hairline);transition:padding-left .25s;
}
.menu-body a.mlink:hover{padding-left:12px}
.menu-body a.mlink .en{font-weight:800;font-size:clamp(24px,3.8vw,34px);letter-spacing:-.01em}
.menu-body a.mlink .ko{font-size:16px;color:var(--ink-dim)}
.menu-foot{padding:26px 24px;border-top:1px solid var(--hairline);text-align:center}
.menu-foot p{font-size:16px;color:var(--ink-dim)}
.menu-foot .sns{margin-top:10px;display:flex;gap:26px;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.08em}
.menu-foot .sns a{color:var(--crimson-hi)}

/* ---------- 히어로 ---------- */
header{
  min-height:100svh;position:relative;overflow:hidden;
  display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;
  text-align:left;padding:130px 5vw 110px;
}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;pointer-events:none;
}
header::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(10deg, rgba(18,18,21,.88) 0%, rgba(18,18,21,.45) 45%, rgba(18,18,21,.12) 100%);
}
.hero-title{
  position:relative;z-index:2;
  font-weight:800;
  font-size:clamp(38px,6vw,74px);line-height:1.1;letter-spacing:-.02em;
}
.hero-title b{color:var(--crimson-hi);font-weight:800}
.hero-copy{position:relative;z-index:2;margin-top:24px;font-size:clamp(17px,1.9vw,21px);color:#DCDDE3}
.hero-copy strong{color:#fff;font-weight:600}
.hero-cta{position:relative;z-index:2;margin-top:40px;display:flex;gap:14px;flex-wrap:wrap}
.btn{
  font-weight:700;font-size:16px;letter-spacing:.04em;
  padding:16px 32px;border:1px solid var(--ink);transition:all .25s;display:inline-block;
}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn.primary{background:var(--crimson);border-color:var(--crimson);color:#fff}
.btn.primary:hover{background:var(--crimson-deep);border-color:var(--crimson-deep)}
.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  font-weight:600;font-size:12px;letter-spacing:.34em;color:var(--gray);
}
.fade-up{opacity:0;transform:translateY(18px);animation:fadeUp 1s ease forwards}
.fade-up.d1{animation-delay:.15s}.fade-up.d2{animation-delay:.3s}.fade-up.d3{animation-delay:.45s}
@keyframes fadeUp{to{opacity:1;transform:none}}

/* ---------- 키워드 티커 ---------- */
.ticker{
  border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);
  overflow:hidden;padding:22px 0;
}
.ticker-track{display:flex;gap:64px;width:max-content;animation:ticker 36s linear infinite}
.ticker-track span{
  font-weight:800;font-size:24px;letter-spacing:.05em;
  color:var(--gray);white-space:nowrap;display:flex;align-items:center;gap:64px;
}
.ticker-track span::after{content:"▼";font-size:11px;color:var(--crimson-hi)}
@keyframes ticker{to{transform:translateX(-50%)}}

/* ---------- ABOUT ---------- */
.about-title{margin-bottom:26px;margin-top:14px}
@media(min-width:821px){.about-title span{white-space:nowrap}}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.about-copy p{margin-bottom:18px;font-size:18px;color:var(--ink-dim)}
.about-copy .lead{font-size:clamp(21px,2.4vw,27px);font-weight:500;line-height:1.65;color:var(--ink)}
.about-copy .lead b{color:var(--crimson-hi);font-weight:700}
.purpose-card{
  border:1px solid var(--hairline);background:var(--panel);padding:28px 32px;
}
.purpose-card h4{
  font-weight:700;font-size:14px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gray);margin-bottom:18px;
}
.purpose-card ul{list-style:none}
.purpose-card li{
  font-size:16.5px;padding:9px 0 9px 28px;position:relative;
  border-bottom:1px solid var(--hairline);
}
.purpose-card li:last-child{border-bottom:0}
.purpose-card li::before{
  content:"▼";position:absolute;left:0;top:12px;
  font-size:10px;color:var(--crimson-hi);
}
@media(max-width:820px){.about-grid{grid-template-columns:1fr}}

/* ---------- FUNCTION ---------- */
.function{background:var(--panel)}
.func-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hairline);border:1px solid var(--hairline)}
.func-cell{background:var(--bg);padding:48px 42px}
.func-cell .code{font-weight:700;font-size:14px;letter-spacing:.2em;color:var(--crimson-hi)}
.func-cell h3{font-weight:800;font-size:24px;margin:16px 0 4px;letter-spacing:-.01em}
.func-cell .ko{font-size:17px;color:var(--gray);margin-bottom:14px;font-weight:500}
.func-cell p{font-size:17px;color:var(--ink-dim)}
@media(max-width:720px){.func-grid{grid-template-columns:1fr}}

/* ---------- HOW IT WORKS ---------- */
.steps{max-width:820px;margin:30px auto 0}
.step{
  display:grid;grid-template-columns:92px 1fr;gap:28px;
  padding:36px 0;border-bottom:1px solid var(--hairline);align-items:start;
}
.step:last-child{border-bottom:0}
.step .no{
  font-weight:800;font-size:38px;color:var(--crimson-hi);line-height:1;
}
.step h3{font-size:21px;font-weight:700;margin-bottom:8px}
.step p{font-size:17px;color:var(--ink-dim)}
@media(max-width:560px){.step{grid-template-columns:60px 1fr;gap:16px}.step .no{font-size:30px}}

/* ---------- 위트니스 (크림슨 스테이트먼트) ---------- */
.witness{background:linear-gradient(180deg,var(--crimson-deep),#4C0C0F);text-align:center}
.witness .sec-label{justify-content:center;color:#fff}
.witness .sec-label small{color:rgba(255,255,255,.55)}
.witness .sec-label::after{display:none}
.witness .lines p{
  font-weight:800;
  font-size:clamp(28px,5.2vw,62px);line-height:1.25;letter-spacing:-.01em;
}
.witness .lines p.dim{color:rgba(255,255,255,.28)}
.witness .sub{margin-top:34px;color:rgba(255,255,255,.85);font-size:18px;max-width:780px;margin-left:auto;margin-right:auto}
@media(min-width:821px){.witness .sub span{white-space:nowrap}}

/* ---------- FEATURE ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--hairline);border:1px solid var(--hairline)}
.feat-cell{background:var(--bg);padding:48px 36px;transition:background .3s}
.feat-cell:hover{background:var(--panel)}
.feat-cell .code{font-weight:800;font-size:17px;color:var(--gray);letter-spacing:.08em}
.feat-cell h3{font-weight:800;font-size:24px;margin:14px 0 14px;letter-spacing:-.01em}
.feat-cell h3 b{color:var(--crimson-hi)}
.feat-cell p{font-size:17px;color:var(--ink-dim)}
@media(max-width:820px){.feat-grid{grid-template-columns:1fr}}

/* ---------- PRODUCT FILM ---------- */
.fullvideo{padding:110px 0;background:#000}
.fullvideo .film-stage{margin-top:44px;display:flex;justify-content:center;padding:0 24px}
.fullvideo video{
  display:block;max-width:100%;max-height:78vh;width:auto;height:auto;
  border-radius:10px;box-shadow:0 24px 70px rgba(0,0,0,.6);
}

/* ---------- TARGET INDUSTRIES ---------- */
.target{background:var(--panel)}
.tgt-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.tgt-card{
  background:var(--bg);border:1px solid var(--hairline);padding:46px 42px;
  position:relative;overflow:hidden;transition:border-color .3s,transform .3s;
}
.tgt-card .bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:0;transform:scale(1.06);
  transition:opacity .45s ease,transform .6s ease;
  pointer-events:none;
}
.tgt-card .no,.tgt-card h3,.tgt-card p{position:relative;z-index:2;transition:opacity .35s ease}
.tgt-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;z-index:3;
  background:var(--crimson-hi);transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.tgt-card:hover,.tgt-card:focus-within{border-color:var(--ink);transform:translateY(-4px)}
.tgt-card:hover::before,.tgt-card:focus-within::before{transform:scaleX(1)}
.tgt-card:hover .bg,.tgt-card:focus-within .bg{opacity:1;transform:scale(1)}
.tgt-card:hover .no,.tgt-card:hover h3,.tgt-card:hover p,
.tgt-card:focus-within .no,.tgt-card:focus-within h3,.tgt-card:focus-within p{opacity:0}
.tgt-card .no{font-weight:800;font-size:17px;color:var(--gray);letter-spacing:.08em}
.tgt-card h3{font-weight:800;font-size:24px;margin:12px 0 12px;letter-spacing:-.01em}
.tgt-card h3 b{color:var(--crimson-hi)}
.tgt-card p{font-size:17px;color:var(--ink-dim)}
.tgt-note{margin-top:28px;font-size:16px;color:var(--gray);text-align:center}
@media(max-width:680px){.tgt-grid{grid-template-columns:1fr}}

/* ---------- CONTACT ---------- */
.contact{text-align:center}
.contact p.desc{max-width:500px;margin:0 auto 42px;color:var(--ink-dim);font-size:18px}
.contact .mail{
  display:inline-block;font-weight:700;
  font-size:clamp(22px,3.4vw,34px);letter-spacing:.02em;
  color:var(--crimson-hi);border-bottom:2px solid var(--crimson-hi);padding-bottom:6px;
}
.contact .tel{margin-top:24px;font-size:18px;letter-spacing:.04em;color:var(--ink-dim);font-weight:500}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--hairline);padding:64px 0 48px}
.foot-grid{display:flex;flex-wrap:wrap;gap:40px;justify-content:space-between;align-items:flex-start}
.foot-logo img{height:76px;width:auto}
.foot-info{font-size:16px;color:var(--ink-dim);line-height:2.05}
.foot-info b{color:var(--ink);font-weight:600}
.foot-info a{color:var(--crimson-hi)}
.foot-sns{display:flex;gap:26px;font-weight:700;font-size:15px;letter-spacing:.08em}
.foot-sns a{color:var(--crimson-hi)}
.foot-copy{margin-top:44px;font-size:14px;letter-spacing:.12em;color:var(--gray);text-align:center}

/* ---------- 모바일 전용 보정 ---------- */

@media(max-width:720px){
  .feat-cell{padding:26px 22px}                    /* 차별점: 박스 축소 */
  .feat-cell h3{font-size:18px;margin:10px 0 10px}
  .feat-cell p{font-size:14.5px;line-height:1.7}
  .feat-cell .code{font-size:14px}
  .func-grid{grid-template-columns:1fr 1fr}        /* 핵심 구성: 웹과 동일한 2×2 유지 */
  .func-cell{padding:20px 14px}
  .func-cell h3{font-size:15px;margin:12px 0 4px}
  .func-cell .ko{font-size:13px;margin-bottom:10px}
  .func-cell p{font-size:12.5px;line-height:1.65}
  .func-cell .code{font-size:11px}
}
@media(max-width:680px){
  .tgt-grid{grid-template-columns:1fr 1fr;gap:14px} /* 도입 분야: 웹과 동일한 2열 유지 */
  .tgt-card{padding:18px 14px}
  .tgt-card h3{font-size:16px;margin:8px 0 8px}
  .tgt-card p{font-size:12.5px;line-height:1.65}
  .tgt-card .no{font-size:12px;color:#D5D6DC}
  .tgt-note{font-size:13px}
  /* 모바일: 사진 상시 표시 + 글자 가독용 어두운 오버레이 */
  .tgt-card .bg{opacity:1;transform:none}
  .tgt-card::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(18,18,21,.66) 0%, rgba(18,18,21,.88) 100%);
  }
  .tgt-card::before{z-index:3}
}
@media(max-width:600px){
  section{padding:84px 0}
  h2{font-size:min(5.5vw,26px)}                    /* 모든 섹션 제목 동일 크기 */
  .witness .lines p{font-size:min(5.5vw,26px)!important;line-height:1.55}
  .witness .sub{font-size:3.2vw;letter-spacing:-.02em}
  .witness .sub span{white-space:nowrap}           /* 비전 문단: 정확히 두 줄 */
  .about-title{letter-spacing:-.03em}
  .about-copy .lead{font-size:17px}                /* 제목보다 작게 */
  .about-copy p{font-size:15px}                    /* 리드보다 작게 */
  .witness .sub .w2,.witness .sub .w3{display:block} /* 비전 문단: 세 줄, 가운데 정렬 */
  .foot-copy{font-size:min(2.9vw,14px);letter-spacing:.04em;white-space:nowrap} /* 카피라이트 한 줄 */
  .about-title span{white-space:nowrap}            /* 제품 소개 제목: 정확히 두 줄 */
  .m-oneline{white-space:nowrap;letter-spacing:-.03em} /* 작동 방식 제목: 한 줄 */
  .hero-title{font-size:8.5vw}
  .hero-copy{font-size:15px}
  .nav-logo img{height:44px}
  .menu-head img{height:42px}
  .sec-label{font-size:13px}
  .sec-label small{font-size:13px}
  .ticker-track span{font-size:18px}
  .steps{margin-top:16px}
  .step{padding:24px 0}
  .step h3{font-size:18px}
  .step p{font-size:15px}
  .purpose-card li{font-size:15px}
  .contact p.desc{font-size:16px}
  .foot-info{font-size:14.5px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal,.fade-up{opacity:1;transform:none;animation:none;transition:none}
  .ticker-track{animation:none}
  *{transition:none!important}
}