/* =========================================================
   대도열기 — 리뉴얼 공통 스타일 (Re:Gen 구조 기반)
   Base reference: 부강테크(bkt21.co.kr) / 부분 참고: DURA, ECOSTAR
   ========================================================= */

:root{
  --black:#0a0a0a;
  --ink:#1a1d21;
  --gray-700:#4a5058;
  --gray-500:#80868e;
  --gray-300:#d5d8dc;
  --gray-100:#f2f3f5;
  --white:#fff;
  --navy:#1b2f55;        /* 로고 네이비 */
  --water:#2e5495;       /* 로고 블루 */
  --aqua:#f07a3a;        /* 불꽃 오렌지 */
  --red:#bf2e2e;
  --wrap:1320px;
  --header-h:88px;
  --topbar-h:36px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --f-head:'Gothic A1','Noto Sans KR',sans-serif;
  --f-body:'Noto Sans KR','Apple SD Gothic Neo','Malgun Gothic',sans-serif;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--f-body);color:var(--ink);background:var(--white);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-x:hidden}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:max(40px,env(safe-area-inset-left,0px));padding-right:max(40px,env(safe-area-inset-right,0px))}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-9999px;top:0;background:#000;color:#fff;padding:10px 16px;z-index:999}
.skip:focus{left:0}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 30px;font-size:14px;font-weight:600;letter-spacing:.02em;transition:.3s var(--ease)}
.btn-black{background:var(--black);color:#fff}
.btn-black:hover{background:var(--water)}
.btn-line{border:1px solid currentColor}
.btn-line:hover{background:#fff;color:var(--black);border-color:#fff}
.btn-line.dark:hover{background:var(--black);color:#fff;border-color:var(--black)}
.btn .arr{width:16px;height:1px;background:currentColor;position:relative;transition:.3s}
.btn .arr::after{content:'';position:absolute;right:0;top:-3px;width:7px;height:7px;border-top:1px solid currentColor;border-right:1px solid currentColor;transform:rotate(45deg)}
.btn:hover .arr{width:24px}

/* ---------- Top bar (BKT: 회사 소개 자료 다운로드) ---------- */
.topbar{height:var(--topbar-h);background:var(--black);color:#fff;font-size:12.5px;display:flex;align-items:center;justify-content:center;gap:8px;position:relative;z-index:60}
.topbar a{text-decoration:underline;text-underline-offset:3px;opacity:.9}
.topbar .close{position:absolute;right:20px;top:50%;transform:translateY(-50%);width:24px;height:24px;color:#fff;font-size:18px;line-height:1;opacity:.7}
body.no-topbar .topbar{display:none}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:50;height:var(--header-h);background:#fff;border-bottom:1px solid transparent;transition:.3s}
.header.scrolled{border-bottom-color:var(--gray-300);box-shadow:0 4px 20px rgba(0,0,0,.04)}
.header .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;max-width:1520px}
.logo{display:flex;flex-direction:column;line-height:1}
.logo .en{font-family:var(--f-head);font-weight:700;font-size:24px;letter-spacing:-.02em;color:var(--navy)}
.logo .en b{color:var(--water)}
.logo .ko{font-size:11.5px;letter-spacing:.32em;color:var(--gray-700);margin-top:6px}
.gnb{display:flex;height:100%}
.gnb>li{position:relative;height:100%}
.gnb>li>a{display:flex;align-items:center;height:100%;padding:0 20px;font-size:16px;font-weight:600;color:var(--ink);position:relative}
.gnb>li>a::after{content:'';position:absolute;left:20px;right:20px;bottom:24px;height:2px;background:var(--water);transform:scaleX(0);transition:.3s var(--ease)}
.gnb>li:hover>a::after,.gnb>li.active>a::after{transform:scaleX(1)}
.gnb .sub{position:absolute;top:100%;left:50%;transform:translate(-50%,8px);min-width:190px;background:#fff;border:1px solid var(--gray-300);padding:12px 0;opacity:0;visibility:hidden;transition:.25s var(--ease)}
.gnb>li:hover .sub{opacity:1;visibility:visible;transform:translate(-50%,0)}
.gnb .sub a{display:block;padding:8px 22px;font-size:14px;color:var(--gray-700);white-space:nowrap}
.gnb .sub a:hover{color:var(--water)}
.h-util{display:flex;align-items:center;gap:16px}
.h-util .tel{font-size:14px;font-weight:600;color:var(--gray-700)}
.h-util .btn{height:42px;padding:0 20px;font-size:13px}
.m-toggle{display:none;width:40px;height:40px;position:relative}
.m-toggle span{position:absolute;left:8px;right:8px;height:2px;background:var(--ink);transition:.3s}
.m-toggle span:nth-child(1){top:13px}.m-toggle span:nth-child(2){top:19px}.m-toggle span:nth-child(3){top:25px}
body.m-open .m-toggle span:nth-child(1){top:19px;transform:rotate(45deg)}
body.m-open .m-toggle span:nth-child(2){opacity:0}
body.m-open .m-toggle span:nth-child(3){top:19px;transform:rotate(-45deg)}
.m-nav{position:fixed;inset:var(--header-h) 0 0 0;background:#fff;z-index:49;padding:24px;overflow:auto;transform:translateX(100%);transition:.4s var(--ease)}
body.m-open .m-nav{transform:none}
.m-nav>li{border-bottom:1px solid var(--gray-300)}
.m-nav>li>a{display:block;padding:18px 4px;font-size:18px;font-weight:700}
.m-nav .sub{padding:0 4px 16px}
.m-nav .sub a{display:block;padding:6px 0;color:var(--gray-700)}

/* ---------- Hero (BKT: full-bleed video + bold headline left) ---------- */
.hero{position:relative;height:calc(100vh - var(--header-h) - var(--topbar-h));min-height:640px;max-height:980px;overflow:hidden;background:#0d1420;color:#fff}
.hero-media{position:absolute;inset:0}
.hero-media video,.hero-media .kb{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-media .kb{background-size:cover;background-position:center;opacity:0;transform:scale(1.12);transition:opacity 1.6s ease}
.hero-media .kb.on{opacity:1;animation:kb 9s linear forwards}
@keyframes kb{from{transform:scale(1.12)}to{transform:scale(1)}}
.hero-media.has-video .kb{display:none}
.hero::before{content:'';position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(8,12,22,.82) 0%,rgba(8,12,22,.5) 50%,rgba(8,12,22,.15) 85%),linear-gradient(0deg,rgba(0,0,0,.35),transparent 40%)}
.hero .rain{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero-inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center}
.hero .eyebrow{font-family:var(--f-head);font-weight:500;font-size:15px;letter-spacing:.3em;color:var(--aqua);margin-bottom:22px}
.hero h1,.hero-slide h2{font-family:var(--f-head);font-weight:700;font-size:clamp(38px,4.6vw,68px);line-height:1.22;letter-spacing:-.02em}
.hero .lead{margin-top:22px;font-size:clamp(16px,1.3vw,20px);opacity:.9;max-width:620px}
.hero .btn{margin-top:40px;align-self:flex-start}
.hero-slides{position:relative;height:100%}
.hero-slide{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;opacity:0;visibility:hidden;transition:opacity .9s ease,visibility .9s}
.hero-slide.on{opacity:1;visibility:visible}
.hero-slide>*{transform:translateY(30px);opacity:0;transition:transform 1s var(--ease),opacity 1s}
.hero-slide.on>*{transform:none;opacity:1}
.hero-slide.on>*:nth-child(2){transition-delay:.12s}.hero-slide.on>*:nth-child(3){transition-delay:.24s}.hero-slide.on>*:nth-child(4){transition-delay:.36s}
.hero-ctrl{position:absolute;z-index:3;left:0;right:0;bottom:48px}
.hero-ctrl .wrap{display:flex;align-items:center;gap:22px}
.hero-ctrl .num{font-family:var(--f-head);font-size:14px;letter-spacing:.1em}
.hero-ctrl .num b{font-size:18px}
.hero-ctrl .bar{width:180px;height:2px;background:rgba(255,255,255,.3);position:relative;overflow:hidden}
.hero-ctrl .bar i{position:absolute;left:0;top:0;bottom:0;width:0;background:#fff}
.hero-ctrl .bar i.run{animation:bar 7s linear forwards}
@keyframes bar{to{width:100%}}
.hero-ctrl button{width:36px;height:36px;border:1px solid rgba(255,255,255,.5);border-radius:50%;display:grid;place-items:center;color:#fff;font-size:12px}
.hero-ctrl button:hover{background:#fff;color:#000}
.scroll-ind{position:absolute;z-index:3;right:40px;bottom:40px;font-size:11px;letter-spacing:.3em;writing-mode:vertical-rl;display:flex;align-items:center;gap:12px;opacity:.8}
.scroll-ind::after{content:'';width:1px;height:60px;background:linear-gradient(#fff,transparent);animation:sc 2s infinite}
@keyframes sc{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- Feature banner (BKT 2nd hero: IUP) ---------- */
.feature{position:relative;min-height:620px;display:flex;align-items:center;color:#fff;overflow:hidden}
.feature .bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.08);transition:transform 1.6s var(--ease)}
.feature.in .bg{transform:scale(1)}
.feature::before{content:'';position:absolute;inset:0;z-index:1;background:linear-gradient(270deg,rgba(0,0,0,.78) 0%,rgba(0,0,0,.45) 45%,rgba(0,0,0,.05) 80%)}
.feature .wrap{position:relative;z-index:2;display:flex;justify-content:flex-end}
.feature .txt{max-width:520px}
.feature .tag{display:inline-block;font-size:12px;letter-spacing:.2em;border:1px solid rgba(255,255,255,.5);padding:6px 12px;margin-bottom:22px}
.feature h2{font-family:var(--f-head);font-weight:700;font-size:clamp(32px,3.6vw,54px);line-height:1.22}
.feature h2 small{display:block;font-size:.42em;font-weight:500;letter-spacing:.04em;margin-top:14px;opacity:.85}
.feature p{margin-top:18px;opacity:.88}
.feature .btn{margin-top:34px}

/* ---------- Section commons ---------- */
.sec{padding:140px 0}
.sec-title{font-family:var(--f-head);font-weight:700;font-size:clamp(34px,3.2vw,46px);letter-spacing:-.01em;line-height:1.1}
.sec-desc{margin-top:18px;color:var(--gray-700);font-size:16px}
.js .reveal{opacity:0;transform:translateY(40px)}
.reveal{transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}

/* ---------- Business carousel (BKT BUSINESS) ---------- */
.biz{overflow:hidden}
.biz .wrap{display:grid;grid-template-columns:280px 1fr;gap:40px}
.biz-head .sec-desc{max-width:260px}
.biz-nav{display:flex;gap:10px;margin-top:40px}
.biz-nav button{width:48px;height:48px;border:1px solid var(--gray-300);display:grid;place-items:center;transition:.3s}
.biz-nav button:hover{background:var(--black);border-color:var(--black);color:#fff}
.biz-nav button:disabled{opacity:.3;pointer-events:none}
.biz-count{margin-top:22px;font-family:var(--f-head);font-size:14px;color:var(--gray-500)}
.biz-count b{color:var(--ink)}
.biz-viewport{overflow:visible;position:relative;margin-right:calc((100vw - min(100vw,var(--wrap)))/-2 - 40px)}
.biz-track{display:flex;gap:16px;transition:transform .7s var(--ease);will-change:transform}
.biz-card{flex:0 0 330px;height:520px;position:relative;overflow:hidden;background:#111;color:#fff;display:flex;flex-direction:column}
.biz-card .img{flex:1;background-size:cover;background-position:center;transition:transform 1s var(--ease)}
.biz-card:hover .img{transform:scale(1.07)}
.biz-card .body{background:#1d2024;padding:26px 26px 26px;position:relative;min-height:190px}
.biz-card .cat{font-size:12px;letter-spacing:.14em;color:var(--aqua)}
.biz-card h3{font-size:21px;font-weight:700;margin-top:6px;line-height:1.35}
.biz-card p{font-size:14px;color:#b9bec5;margin-top:10px;line-height:1.6;padding-right:60px}
.biz-card .more{position:absolute;right:0;bottom:0;width:62px;height:62px;background:#2c3036;font-size:11px;line-height:1.2;display:grid;place-items:center;text-align:center;transition:.3s}
.biz-card:hover .more{background:var(--water)}

/* ---------- Values (DURA mission/values 3블록) ---------- */
.values{background:var(--gray-100)}
.values .head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.values .head .sec-desc{max-width:520px}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:64px}
.v-card{background:#fff;padding:44px 38px 48px;position:relative;overflow:hidden;transition:.4s var(--ease)}
.v-card::before{content:'';position:absolute;left:0;top:0;width:100%;height:4px;background:var(--water);transform:scaleX(0);transform-origin:left;transition:.5s var(--ease)}
.v-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(10,40,80,.08)}
.v-card:hover::before{transform:scaleX(1)}
.v-card .no{font-family:var(--f-head);font-size:13px;color:var(--gray-500);letter-spacing:.12em}
.v-card h3{font-family:var(--f-head);font-weight:700;font-size:28px;margin-top:26px;color:var(--navy)}
.v-card h3 em{font-style:normal;color:var(--water)}
.v-card .k{font-size:19px;font-weight:700;margin-top:10px}
.v-card p{margin-top:14px;color:var(--gray-700);font-size:15px}
.vision-line{margin-top:70px;padding-top:40px;border-top:1px solid var(--gray-300);display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.vision-line strong{font-family:var(--f-head);font-size:clamp(22px,2.2vw,32px);font-weight:700;line-height:1.35}
.vision-line strong span{color:var(--water)}

/* ---------- CTA (BKT 1:1 문의 dark band) ---------- */
.cta{position:relative;padding:110px 0;color:#fff;overflow:hidden;background:#000}
.cta .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.38}
.cta .wrap{position:relative;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta h2{font-family:var(--f-head);font-weight:700;font-size:clamp(26px,2.4vw,34px)}
.cta p{margin-top:12px;opacity:.85}

/* ---------- Stories (BKT NEWS / NOTICE) ---------- */
.stories{background:#ebedf0;position:relative;overflow:hidden}
.stories::before,.stories::after{content:'';position:absolute;border-radius:50%;opacity:.6;pointer-events:none}
.stories::before{width:520px;height:520px;background:radial-gradient(circle,#f6c9a8,rgba(246,201,168,0) 70%);right:22%;top:-120px}
.stories::after{width:560px;height:560px;background:radial-gradient(circle,#a9c0e8,rgba(169,192,232,0) 70%);right:-120px;top:140px}
.stories .wrap{position:relative;z-index:1}
.stories .head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap}
.stories-grid{display:grid;grid-template-columns:1fr 340px;gap:50px;margin-top:56px}
.list-label{display:flex;justify-content:space-between;align-items:center;font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--gray-700);margin-bottom:14px}
.list-label a{font-weight:500;letter-spacing:0}
.news-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.news-card .thumb{aspect-ratio:4/3;overflow:hidden;background:#ccc}
.news-card .thumb div{width:100%;height:100%;background-size:cover;background-position:center;transition:transform .8s var(--ease)}
.news-card:hover .thumb div{transform:scale(1.06)}
.news-card .meta{font-size:12px;color:var(--gray-500);margin-top:16px}
.news-card h3{font-size:17px;font-weight:700;line-height:1.45;margin-top:6px}
.news-card:hover h3{color:var(--water)}
.notice-box{background:#fff}
.notice-box .tit{background:#4b4f55;color:#fff;font-weight:700;padding:14px 22px;font-size:14px}
.notice-box li a{display:block;padding:18px 22px;border-bottom:1px solid var(--gray-100);font-size:15px;transition:.2s}
.notice-box li a:hover{background:var(--gray-100);color:var(--water)}
.notice-box li span{display:block;font-size:12px;color:var(--gray-500);margin-top:4px}

/* ---------- Partners / cert strip ---------- */
.marquee{padding:46px 0;border-top:1px solid var(--gray-300);border-bottom:1px solid var(--gray-300);overflow:hidden;white-space:nowrap}
.marquee .track{display:inline-flex;gap:70px;animation:mq 40s linear infinite}
.marquee span{font-family:var(--f-head);font-weight:700;font-size:clamp(30px,4vw,58px);color:transparent;-webkit-text-stroke:1px #b7bcc3}
.marquee span.fill{color:var(--navy);-webkit-text-stroke:0}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- Footer ---------- */
.footer{background:#000;color:#fff;padding:70px 0 60px;font-size:13.5px}
.footer .wrap{display:grid;grid-template-columns:1fr 360px;gap:40px}
.footer .logo .en{color:#fff}
.footer .logo .ko{color:#9aa0a6}
.f-info{margin-top:28px;color:#b5b9be;line-height:1.95}
.f-info b{color:#fff;font-weight:600;margin-right:6px}
.f-info .sep{display:inline-block;width:1px;height:10px;background:#555;margin:0 12px}
.f-copy{margin-top:24px;color:#777}
.f-sub h4{font-size:15px;margin-bottom:10px}
.f-sub p{color:#b5b9be}
.f-sub .btn{margin-top:22px;height:46px;width:100%;justify-content:center;color:#fff}
.f-links{display:flex;gap:18px;margin-top:22px;color:#9aa0a6}
.f-links a:hover{color:#fff}

/* ---------- Floating ---------- */
.to-top{position:fixed;right:24px;bottom:24px;z-index:40;width:52px;height:52px;border-radius:50%;background:var(--black);color:#fff;font-size:12px;font-weight:700;opacity:0;visibility:hidden;transition:.3s}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--water)}

/* =========================================================
   SUB PAGES
   ========================================================= */
.sub-visual{position:relative;height:460px;color:#fff;display:flex;align-items:flex-end;overflow:hidden}
.sub-visual .bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.1);animation:subzoom 2.2s var(--ease) forwards}
@keyframes subzoom{to{transform:scale(1)}}
.sub-visual::before{content:'';position:absolute;inset:0;z-index:1;background:linear-gradient(0deg,rgba(0,0,0,.65),rgba(0,0,0,.15) 70%)}
.sub-visual .wrap{position:relative;z-index:2;padding-bottom:64px}
.sub-visual .crumb{font-size:13px;opacity:.8;letter-spacing:.04em}
.sub-visual .crumb a:hover{text-decoration:underline}
.sub-visual h1{font-family:var(--f-head);font-weight:700;font-size:clamp(34px,3.8vw,56px);margin-top:14px;line-height:1.2}
.sub-visual p{margin-top:12px;font-size:18px;opacity:.88}
.sub-tab{border-bottom:1px solid var(--gray-300);background:#fff;position:sticky;top:var(--header-h);z-index:30}
.sub-tab ul{display:flex;overflow-x:auto;scrollbar-width:none}
.sub-tab li a{display:block;padding:20px 26px;font-size:15px;font-weight:600;color:var(--gray-500);white-space:nowrap;border-bottom:2px solid transparent}
.sub-tab li.on a,.sub-tab li a:hover{color:var(--ink);border-bottom-color:var(--ink)}

.intro{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.intro .label{font-size:13px;letter-spacing:.2em;color:var(--water);font-weight:700}
.intro h2{font-family:var(--f-head);font-weight:700;font-size:clamp(28px,2.8vw,42px);line-height:1.3;margin-top:14px}
.intro p{margin-top:22px;color:var(--gray-700);font-size:17px;line-height:1.85}
.intro .pic{aspect-ratio:5/4;background-size:cover;background-position:center}
.intro.rev .pic{order:-1}

.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px}
.feat{background:#fff;border:1px solid var(--gray-300);overflow:hidden;transition:.4s var(--ease)}
.feat:hover{border-color:var(--water);transform:translateY(-4px)}
.feat .img{aspect-ratio:4/3;background-size:cover;background-position:center}
.feat .t{padding:24px 24px 28px}
.feat .t b{font-family:var(--f-head);font-size:13px;color:var(--water);letter-spacing:.1em}
.feat .t h3{font-size:19px;margin-top:6px}
.feat .t p{font-size:14.5px;color:var(--gray-700);margin-top:8px}

.diagram{margin-top:56px;display:grid;gap:24px}
.diagram.c2{grid-template-columns:1fr 1fr}
.diagram.c3{grid-template-columns:repeat(3,1fr)}
.diagram.c4{grid-template-columns:repeat(4,1fr)}
.diagram figure{background:#fff;border:1px solid var(--gray-300);padding:16px}
.diagram figure img{width:100%;height:auto;cursor:zoom-in}
.diagram figcaption{font-size:14px;color:var(--gray-700);margin-top:12px;font-weight:600}
.gray-sec{background:var(--gray-100)}

.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:56px}
.gallery a{aspect-ratio:1;overflow:hidden;display:block;background:#ddd}
.gallery a div{width:100%;height:100%;background-size:cover;background-position:center;transition:transform .8s var(--ease)}
.gallery a:hover div{transform:scale(1.08)}
.gallery a.wide{grid-column:span 2;aspect-ratio:2/1}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:56px;border-top:2px solid var(--ink)}
.step{padding:32px 26px;border-right:1px solid var(--gray-300)}
.step:last-child{border-right:0}
.step .n{font-family:var(--f-head);font-size:40px;font-weight:700;color:var(--gray-300)}
.step h3{font-size:19px;margin-top:8px}
.step p{font-size:14.5px;color:var(--gray-700);margin-top:8px}
.step img{margin-top:18px;width:100%;background:#fff}

.slogan-band{background:var(--navy);color:#fff;padding:110px 0;text-align:center}
.slogan-band h2{font-family:var(--f-head);font-weight:700;font-size:clamp(26px,3vw,44px);line-height:1.4}
.slogan-band p{margin-top:16px;opacity:.8}

.quote{font-family:var(--f-head);font-size:clamp(22px,2.2vw,32px);font-weight:500;line-height:1.6;text-align:center;max-width:900px;margin:0 auto;color:var(--navy)}
.quote::before{content:'“';display:block;font-size:80px;line-height:.6;color:var(--water);margin-bottom:20px}

.loc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px}
.loc{border:1px solid var(--gray-300);padding:36px}
.loc h3{font-size:20px}
.loc p{margin-top:10px;color:var(--gray-700)}
.loc .map{margin-top:22px;aspect-ratio:16/9;background:var(--gray-100);border:0;width:100%}

.form{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;margin-top:40px}
.form .full{grid-column:1/-1}
.form label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.form label i{color:var(--water);font-style:normal}
.form input,.form select,.form textarea{width:100%;height:54px;border:1px solid var(--gray-300);padding:0 16px;font:inherit;font-size:15px;background:#fff;transition:.2s}
.form textarea{height:200px;padding:16px;resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--ink)}
.form .agree{display:flex;gap:10px;align-items:center;font-size:14px;color:var(--gray-700)}
.form .agree input{width:18px;height:18px}
.contact-wrap{display:grid;grid-template-columns:380px 1fr;gap:80px}
.contact-info li{padding:22px 0;border-bottom:1px solid var(--gray-300)}
.contact-info b{display:block;font-size:13px;color:var(--gray-500);letter-spacing:.1em;margin-bottom:6px}
.contact-info span{font-size:18px;font-weight:700}

.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.88);display:none;align-items:center;justify-content:center;padding:40px;cursor:zoom-out}
.lightbox.on{display:flex}
.lightbox img{max-width:100%;max-height:100%}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1280px){
  .gnb>li>a{padding:0 13px;font-size:15px}
  .gnb>li>a::after{left:13px;right:13px}
  .h-util .tel{display:none}
}
@media (max-width:1080px){
  :root{--header-h:70px}
  .gnb,.h-util .btn{display:none}
  .m-toggle{display:block}
  .wrap{padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px))}
  .sec{padding:96px 0}
  .biz .wrap{grid-template-columns:1fr}
  .biz-viewport{margin-right:-24px}
  .values-grid{grid-template-columns:1fr}
  .stories-grid{grid-template-columns:1fr}
  .footer .wrap{grid-template-columns:1fr}
  .intro{grid-template-columns:1fr;gap:40px}
  .intro.rev .pic{order:0}
  .feat-grid,.diagram.c4,.steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2){border-right:0}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .contact-wrap{grid-template-columns:1fr;gap:40px}
  .scroll-ind{display:none}
}
@media (max-width:680px){
  :root{--topbar-h:32px}
  .topbar{font-size:11.5px}
  .wrap{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
  .logo .en{font-size:20px}
  .hero{min-height:560px}
  .hero-ctrl .bar{width:90px}
  .biz-viewport{margin-right:-16px}
  .biz-card{flex-basis:270px;height:460px}
  .news-cards{grid-template-columns:1fr}
  .feature{min-height:520px}
  .feature::before{background:rgba(0,0,0,.55)}
  .feat-grid,.diagram.c2,.diagram.c3,.diagram.c4,.steps,.loc-grid,.form{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--gray-300)}
  .gallery{grid-template-columns:1fr 1fr}
  .sub-visual{height:360px}
  .sub-visual .wrap{padding-bottom:44px}
  .f-info .sep{display:none}
  .f-info span{display:block}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}
@media (max-width:680px){.hero .lead br{display:none}.hero h1,.hero h2{font-size:34px}}

/* =========================================================
   MOTION LAYER v3 (경량) — transform / opacity 만 사용
   ========================================================= */
.scroll-progress{position:fixed;left:0;right:0;top:0;height:3px;z-index:120;pointer-events:none}
.scroll-progress i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--aqua),var(--water));transform-origin:left;transform:scaleX(0)}
.split-line{display:block;overflow:hidden;padding-bottom:.06em}
.split-line>span,.char{display:inline-block}
.hero .eyebrow::before{content:'';display:inline-block;width:34px;height:1px;background:currentColor;vertical-align:middle;margin-right:12px}

/* 버튼 hover: 아래에서 물 차오르듯 */
.btn{position:relative;overflow:hidden;isolation:isolate}
.btn::before{content:'';position:absolute;inset:0;z-index:-1;background:var(--water);transform:translateY(101%);transition:transform .4s var(--ease)}
.btn:hover::before{transform:none}
.btn-black:hover{background:var(--black)}
.btn-line:hover,.btn-line.dark:hover{background:transparent;color:#fff;border-color:var(--water)}

/* 카드 hover (CSS만) */
.biz-card{transition:transform .4s var(--ease)}
.biz-card:hover{transform:translateY(-8px)}
.news-card{transition:transform .4s var(--ease)}
.news-card:hover{transform:translateY(-6px)}

/* "비가 오는 모든 순간" 줌 섹션 */
.zoom-sec{position:relative;background:#0a0e16;color:#fff}
.zoom-pin{position:relative;height:100vh;min-height:560px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.zoom-media{position:absolute;inset:0;overflow:hidden;background:linear-gradient(160deg,#bf2e2e,#1b2f55);transform-origin:center}
.zoom-img{position:absolute;inset:0;background-size:cover;background-position:center}
.zoom-dim{position:absolute;inset:0;z-index:1;background:linear-gradient(0deg,rgba(10,14,22,.82),rgba(10,14,22,.35))}
.zoom-txt{position:relative;z-index:2;text-align:center;padding:0 16px}
.zoom-eyebrow{font-family:var(--f-head);letter-spacing:.35em;font-size:14px;color:var(--aqua)}
.zoom-title{font-family:var(--f-head);font-weight:700;font-size:clamp(46px,8vw,128px);line-height:1.05;margin-top:16px;letter-spacing:-.02em}
.zoom-title span{display:block}
.zoom-title span:last-child{-webkit-text-stroke:1.5px #fff;color:transparent}
.zoom-desc{margin-top:22px;font-size:clamp(16px,1.4vw,21px);opacity:.88}
.zoom-steps{position:absolute;z-index:2;left:0;right:0;bottom:6vh;display:grid;grid-template-columns:repeat(4,1fr);max-width:var(--wrap);margin:0 auto;padding:0 40px;gap:20px}
.zoom-steps li{border-top:1px solid rgba(255,255,255,.35);padding-top:16px;font-size:20px;font-weight:700}
.zoom-steps b{display:block;font-family:var(--f-head);font-size:12px;color:var(--aqua);letter-spacing:.2em;margin-bottom:6px}
.zoom-steps small{display:block;font-size:13px;font-weight:400;opacity:.7;margin-top:4px}

/* 푸터 대형 타이포: 보이면 한 번 채워짐 */
.footer{overflow:hidden}
.footer-big{display:flex;gap:3vw;justify-content:center;margin-top:70px;font-family:var(--f-head);font-weight:700;font-size:clamp(60px,13vw,220px);line-height:.8;letter-spacing:-.03em;white-space:nowrap;user-select:none}
.footer-big span{color:transparent;-webkit-text-stroke:1px #2c3138;background:linear-gradient(90deg,var(--water),var(--aqua)) no-repeat;-webkit-background-clip:text;background-clip:text;background-size:0% 100%;transition:background-size 1.8s var(--ease)}
.footer-big.in span{background-size:100% 100%}
.footer-big.in span:last-child{transition-delay:.3s}

/* TOP 버튼 진행 원 */
.to-top{display:grid;place-items:center}
.to-top svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.to-top circle{fill:none;stroke:var(--aqua);stroke-width:2;stroke-dasharray:151;stroke-dashoffset:var(--dash,151)}
.to-top b{position:relative;font-size:11px}

/* 뉴스레터 팝업 (부강테크 구독 팝업 방식) */
.nl-pop{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:16px}
.nl-pop[hidden]{display:none!important}
.nl-dim{position:absolute;inset:0;background:rgba(4,12,22,.62);opacity:0;transition:opacity .5s}
.nl-pop.on .nl-dim{opacity:1}
.nl-box{position:relative;width:min(920px,100%);display:grid;grid-template-columns:1fr 1fr;background:#fff;overflow:hidden;opacity:0;transform:translateY(60px) scale(.96);transition:opacity .6s var(--ease),transform .7s var(--ease);max-height:calc(100vh - 32px)}
.nl-pop.on .nl-box{opacity:1;transform:none}
.nl-visual{position:relative;background-color:var(--navy);background-size:cover;background-position:center;min-height:460px;opacity:0;transform:scale(1.08);transition:opacity .6s .15s,transform 1.2s var(--ease)}
.nl-pop.on .nl-visual{opacity:1;transform:none}
.nl-badge{position:absolute;left:24px;bottom:24px;font-family:var(--f-head);font-size:12px;letter-spacing:.3em;color:#fff;border:1px solid rgba(255,255,255,.6);padding:7px 12px;background:rgba(0,0,0,.2)}
.nl-body{position:relative;padding:56px 48px 40px;display:flex;flex-direction:column;overflow:auto}
.nl-body>*{opacity:0;transform:translateY(16px);transition:.6s var(--ease)}
.nl-pop.on .nl-body>*{opacity:1;transform:none}
.nl-pop.on .nl-body>*:nth-child(2){transition-delay:.35s}.nl-pop.on .nl-body>*:nth-child(3){transition-delay:.45s}.nl-pop.on .nl-body>*:nth-child(4){transition-delay:.55s}.nl-pop.on .nl-body>*:nth-child(5){transition-delay:.65s}.nl-pop.on .nl-body>*:nth-child(6){transition-delay:.75s}
.nl-close{position:absolute;right:16px;top:12px;width:40px;height:40px;font-size:26px;line-height:1;color:var(--gray-700);transition:transform .3s}
.nl-close:hover{transform:rotate(90deg);color:var(--ink)}
.nl-eyebrow{font-family:var(--f-head);font-size:12px;letter-spacing:.3em;color:var(--water)}
.nl-body h2{font-family:var(--f-head);font-weight:700;font-size:30px;line-height:1.3;margin-top:14px}
.nl-desc{margin-top:14px;color:var(--gray-700);font-size:15px}
.nl-form{margin-top:28px;display:grid;gap:10px}
.nl-form input[type=email]{height:54px;border:1px solid var(--gray-300);padding:0 16px;font:inherit;font-size:15px;transition:border-color .2s}
.nl-form input[type=email]:focus{outline:0;border-color:var(--water)}
.nl-form .btn{justify-content:center}
.nl-agree{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--gray-700)}
.nl-agree input{width:16px;height:16px}
.nl-msg{font-size:14px;min-height:20px;color:var(--water);font-weight:600}
.nl-msg.err{color:#d23c3c}
.nl-today{margin-top:auto;padding-top:20px;align-self:flex-start;font-size:13px;color:var(--gray-500);text-decoration:underline;text-underline-offset:3px}
.nl-form.done{pointer-events:none}
.nl-form.done input,.nl-form.done .btn,.nl-form.done .nl-agree{opacity:.4}
body.nl-lock{overflow:hidden}

@media (max-width:1080px){
  .zoom-steps{grid-template-columns:1fr 1fr;padding:0 24px;bottom:4vh}
}
@media (max-width:680px){
  .nl-box{grid-template-columns:1fr}
  .nl-visual{min-height:160px}
  .nl-body{padding:36px 22px 26px}
  .nl-body h2{font-size:24px}
  .zoom-steps{display:none}
  .footer-big{margin-top:44px}
}
@media (prefers-reduced-motion:reduce){
}
.hero-media.has-video~.rain{display:none}

/* v5 이미지 로고 · 인증 배지 */
.logo img{height:44px;width:auto;display:block}
.footer .logo img{height:52px}
@media (max-width:680px){.logo img{height:34px}}
.certs{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.certs li{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--gray-700)}
.certs img{height:30px;width:auto;mix-blend-mode:multiply}
.vision-line{align-items:flex-end}
.vision-line .btn{order:3}
.logo{align-items:flex-start}.logo img{align-self:flex-start;max-width:none}
@media (max-width:680px){.hero h1,.hero-slide h2{font-size:30px}.feature .bg{background-position:30% center}}

/* v6 OUR VALUE 카드 이미지 */
.v-card{padding:0;display:flex;flex-direction:column}
.v-card .v-img{aspect-ratio:16/10;overflow:hidden;background:var(--navy)}
.v-card .v-img div{width:100%;height:100%;background-size:cover;background-position:center;transition:transform 1.2s var(--ease)}
.v-card:hover .v-img div{transform:scale(1.07)}
.v-card .v-body{padding:34px 34px 40px}
.v-card h3{margin-top:14px}
.values .vision-line{margin-top:56px}

/* v7 푸터 대형 글자: 글자 윗부분까지 그라데이션이 채워지도록 칠할 영역 확장 (레이아웃은 음수 여백으로 유지) */
.footer-big{line-height:1}
.footer-big span{display:inline-block;line-height:1;padding:.3em .02em .2em;margin:-.3em 0 -.2em}

/* v8 서브 탭 슬라이딩 바 + 앵커 이동 시 제목 가림 방지 */
.sub-tab ul{position:relative}
.sub-tab li a{border-bottom-color:transparent!important;transition:color .25s}
.sub-tab li.on a{color:var(--ink)}
.sub-ink{position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--water);transition:transform .45s var(--ease),width .45s var(--ease);pointer-events:none}
main section[id]{scroll-margin-top:170px}
@media (max-width:1080px){main section[id]{scroll-margin-top:140px}}

/* v9 처리공정 단계 이미지 높이 정렬: 같은 비율 박스 + 하단 정렬 */
.step{display:flex;flex-direction:column}
.step p{margin-bottom:18px}
.step img{margin-top:auto;width:100%;aspect-ratio:16/10;object-fit:contain;background:#fff;padding:14px}

/* v10 도면·자료 이미지: 같은 줄 박스 높이 통일 + 설명 하단 중앙 정렬 */
.diagram{align-items:stretch}
.diagram figure{display:flex;flex-direction:column;padding:20px}
.diagram figure img{flex:none;object-fit:contain;background:#fff}
.diagram.c2 figure img{aspect-ratio:4/3}
.diagram.c3 figure img,.diagram.c4 figure img{aspect-ratio:1/1}
.diagram figcaption{margin-top:auto;padding-top:16px;text-align:center}

/* v11 BUSINESS 드래그 */
.biz-track{cursor:grab;user-select:none;-webkit-user-select:none}
.biz-track.dragging{cursor:grabbing}
.biz-track.dragging .biz-card{pointer-events:none}
.biz-card .img{-webkit-user-drag:none}

/* v12 줌 섹션 빗방울·물튀김 */
.zoom-rain{position:absolute;inset:0;z-index:1;pointer-events:none}
.fx .zoom-on .zoom-rain{opacity:0}

/* v13 모바일 메뉴: 부강테크식 전체화면 · 큰 글씨 중앙 정렬 · > 눌러 하위 펼침 */
.m-nav{position:fixed;inset:0;z-index:150;background:#fff;padding:0;transform:none;display:flex;flex-direction:column;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;overflow:hidden}
body.m-open .m-nav{opacity:1;visibility:visible;transform:none}
body.m-open{overflow:hidden}
.m-top{flex:none;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid transparent}
.m-close{width:48px;height:48px;border:1px solid var(--ink);position:relative}
.m-close span{position:absolute;left:12px;right:12px;top:50%;height:1.5px;background:var(--ink)}
.m-close span:first-child{transform:rotate(45deg)}.m-close span:last-child{transform:rotate(-45deg)}
.m-body{flex:1;overflow-y:auto;display:flex;align-items:safe center;justify-content:center;padding:24px 16px}
.m-list{width:100%;max-width:420px;text-align:center}
.m-list>li{border:0;opacity:0;transform:translateY(24px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
body.m-open .m-list>li{opacity:1;transform:none}
body.m-open .m-list>li:nth-child(2){transition-delay:.04s}body.m-open .m-list>li:nth-child(3){transition-delay:.08s}body.m-open .m-list>li:nth-child(4){transition-delay:.12s}body.m-open .m-list>li:nth-child(5){transition-delay:.16s}body.m-open .m-list>li:nth-child(6){transition-delay:.2s}body.m-open .m-list>li:nth-child(7){transition-delay:.24s}
.m-item{display:inline-flex;align-items:center;gap:14px;padding:10px 0;font-family:var(--f-body);font-size:clamp(26px,7.5vw,34px);font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.3}
.m-arr{display:inline-block;width:12px;height:12px;border-top:1.5px solid currentColor;border-right:1.5px solid currentColor;transform:rotate(45deg);transition:transform .3s var(--ease);margin-left:2px}
.has-sub.open .m-arr{transform:rotate(135deg) translate(-3px,3px)}
.has-sub.open>.m-item{color:var(--water)}
.m-sub{display:grid;grid-template-rows:0fr;transition:grid-template-rows .4s var(--ease)}
.m-sub>div{overflow:hidden;padding:0}
.has-sub.open .m-sub{grid-template-rows:1fr}
.m-sub a{display:block;padding:7px 0;font-size:17px;color:var(--gray-700)}
.has-sub.open .m-sub>div{padding:4px 0 14px}
@media (hover:hover){.m-sub a:hover{color:var(--water)}}
.m-foot{flex:none;display:flex;justify-content:center;gap:18px;padding:18px 16px calc(18px + env(safe-area-inset-bottom,0px));font-size:13px;color:var(--gray-500);border-top:1px solid var(--gray-100)}
@media (min-width:1081px){.m-nav{display:none}}

/* v14 푸터 대형 글자 RE:GEN PARTNERS (대문자로 길어져 크기 조정) */
.footer-big{font-size:clamp(34px,8.2vw,150px);gap:2.4vw;letter-spacing:-.01em}

/* =========================================================
   DAEDO 추가
   ========================================================= */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:61;background:#fff}
.header{top:env(safe-area-inset-top,0px)}
.logo img{height:46px}
.footer .logo img{height:48px}
.hero .ember,.zoom-ember{position:absolute;inset:0;z-index:1;pointer-events:none}
.zoom-ember{z-index:1}
.hero .eyebrow{color:var(--aqua)}
/* PRODUCTS 메가 드롭다운 */
.gnb .sub.mega{display:grid;grid-template-columns:repeat(4,minmax(150px,1fr));gap:0 8px;min-width:720px;padding:22px 14px}
.gnb .sub.mega .col b{display:block;padding:0 22px 8px;margin-bottom:4px;font-size:13px;color:var(--water);border-bottom:1px solid var(--gray-100)}
.gnb .sub.mega a{padding:5px 22px}
/* 비즈 카드: 흰 배경 제품 사진 */
.biz-card .img.prod{background-color:#fff;background-size:72% auto;background-repeat:no-repeat}
.biz-card .img.brands{background-color:#fff;background-size:92% auto;background-repeat:no-repeat}
/* VALUE 4칸 */
.values-grid.c4{grid-template-columns:repeat(4,1fr)}
.v-card .v-img.prod div{background-color:#fff;background-size:70% auto;background-repeat:no-repeat}
.certs img{height:40px}
/* 제품 카탈로그 */
.cat-sec{padding:96px 0 40px}
.cat-sec + .cat-sec{border-top:1px solid var(--gray-300)}
.cat-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:10px}
.cat-head .label{font-size:13px;letter-spacing:.2em;color:var(--water);font-weight:700}
.cat-head h2{font-family:var(--f-head);font-weight:800;font-size:clamp(30px,3vw,44px);margin-top:8px}
.cat-head h2 em{font-style:normal;font-size:.45em;color:var(--gray-500);font-weight:600;margin-left:8px}
.pblock{padding:44px 0 20px;scroll-margin-top:170px}
.pblock-head{display:flex;align-items:baseline;gap:14px;margin-bottom:22px;padding-bottom:14px;border-bottom:2px solid var(--ink)}
.pblock-head h3{font-size:22px;font-weight:700}
.pblock-head h3 em{font-style:normal;font-size:14px;color:var(--gray-500);font-weight:500;margin-left:6px}
.pblock-head small{font-size:12px;letter-spacing:.14em;color:var(--water);font-weight:700}
.pblock-head a{margin-left:auto;font-size:13px;color:var(--gray-700);border-bottom:1px solid currentColor}
.pblock-head a:hover{color:var(--water)}
.mgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:26px 18px}
.mcard{display:flex;flex-direction:column;gap:12px;text-align:left;min-width:0}
.mimg{display:block;aspect-ratio:1.5;background:#fff;border:1px solid var(--gray-300);overflow:hidden;width:100%;max-width:100%;transition:border-color .3s}
.mimg img{width:100%;height:100%;object-fit:contain;transition:transform .6s var(--ease)}
.mimg.cover img{object-fit:cover}
.mimg.empty{display:grid;place-items:center;align-content:center;gap:8px;background:var(--gray-100)}
.mimg.empty img{width:auto;height:24px;opacity:.45;filter:grayscale(1)}
.mimg.empty em{font-style:normal;font-size:12px;color:var(--gray-500)}
.mcard:hover .mimg{border-color:var(--water)}
.mcard:hover .mimg img{transform:scale(1.06)}
.mname{font-size:15px;font-weight:600;line-height:1.45}
.mcard:hover .mname{color:var(--water)}
.lightbox{flex-direction:column;gap:16px;color:#fff}
.lightbox img{background:#fff;max-height:80vh}
.lightbox p{font-size:16px;font-weight:600}
/* about */
.timeline{border-left:1px solid var(--gray-300);margin:56px 0 0 10px;padding-left:44px}
.timeline article{position:relative;padding:0 0 44px}
.timeline article::before{content:"";position:absolute;left:-50px;top:14px;width:11px;height:11px;border-radius:50%;background:var(--water);box-shadow:0 0 0 6px #e3e9f3}
.timeline h3{font-family:var(--f-head);font-weight:800;font-size:38px;color:var(--navy);line-height:1.2}
.timeline p{color:var(--gray-700);margin-top:8px}
.pdf-list li{border-bottom:1px solid var(--gray-300)}
.pdf-list a{display:flex;align-items:center;gap:18px;padding:22px 6px;font-size:17px;font-weight:600}
.pdf-list a:hover{color:var(--water)}
.pdf-list .ext{font-family:var(--f-head);font-size:12px;letter-spacing:.1em;color:#fff;background:var(--red);padding:4px 8px}
.pdf-list small{margin-left:auto;color:var(--gray-500);font-weight:400;font-size:13px}
.gallery a{cursor:zoom-in}
.gallery figcaption{display:none}
.empty-box{border:1px dashed var(--gray-300);padding:60px 24px;text-align:center;color:var(--gray-500);margin-top:56px}
.form-msg{grid-column:1/-1;font-weight:700;color:var(--water);min-height:1.6em}
.feature .bg{background-position:center}
@media (max-width:1280px){.gnb .sub.mega{min-width:640px}.mgrid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:1080px){.values-grid.c4{grid-template-columns:1fr 1fr}.mgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:680px){.values-grid.c4{grid-template-columns:1fr}.mgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}.mname{font-size:13px}.timeline h3{font-size:30px}.pblock-head a{display:none}}

/* v2 서브메뉴별 페이지 */
.cat-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.cat-pills a{padding:8px 18px;border:1px solid rgba(255,255,255,.45);font-size:14px;font-weight:600;transition:.25s}
.cat-pills a:hover{background:rgba(255,255,255,.12)}
.cat-pills a.on{background:#fff;color:var(--ink);border-color:#fff}
.sub-tab.pages li a small{font-size:12px;color:var(--gray-500);margin-left:3px;font-weight:500}
.sub-tab.pages li.on a{color:var(--ink);box-shadow:inset 0 -2px 0 var(--water)}
.sub-tab.pages li a:hover{color:var(--ink)}
.pdetail .sec-desc{margin-top:10px}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:80px;border-top:1px solid var(--gray-300);padding-top:30px}
.pn a{display:flex;flex-direction:column;gap:4px;padding:20px 24px;border:1px solid var(--gray-300);font-weight:700;transition:.25s}
.pn a small{font-size:11px;letter-spacing:.2em;color:var(--gray-500);font-weight:600}
.pn a.next{text-align:right;align-items:flex-end}
.pn a:hover{border-color:var(--water);color:var(--water)}
.mname .cnt{color:var(--gray-500);font-weight:500;font-size:13px}
.gallery a{position:relative}
.gallery .cap{position:absolute;left:0;right:0;bottom:0;padding:24px 14px 12px;font-size:13px;font-weight:600;color:#fff;background:linear-gradient(0deg,rgba(0,0,0,.7),transparent)}
@media (max-width:680px){.pn{grid-template-columns:1fr}.pn a.next{text-align:left;align-items:flex-start}.cat-pills a{padding:7px 12px;font-size:13px}}

/* =========================================================
   v3 서브페이지 — 석무 구조 (subhero · breadcrumb · page-tabs)
   ========================================================= */
.section{padding:90px 0 110px}
.subhero{position:relative;height:340px;margin-left:90px;border-bottom-left-radius:70px;overflow:hidden;background:#0d1420;color:#fff;display:grid;place-items:center;text-align:center}
.subhero .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.5;transform:scale(1.1);animation:subzoom 2.2s var(--ease) forwards}
.subhero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,12,22,.55),rgba(8,12,22,.2))}
.subhero .wrap{position:relative;z-index:1}
.subhero p{font-family:var(--f-head);font-size:13px;letter-spacing:.35em;color:var(--aqua);margin:0}
.subhero h1{font-family:var(--f-head);font-weight:800;font-size:clamp(32px,3.6vw,50px);margin-top:10px}
.breadcrumb{margin-top:-36px;position:relative;z-index:2;display:flex;background:#fff;border:1px solid var(--gray-300);min-height:70px;align-items:stretch;box-shadow:0 10px 30px rgba(10,20,40,.06)}
.breadcrumb>a,.breadcrumb>span,.breadcrumb>select{padding:0 26px;display:flex;align-items:center;border:0;border-right:1px solid var(--gray-300);background:#fff;font-size:14px;font-weight:600;min-width:0}
.breadcrumb>a:first-child{background:var(--navy);color:#fff;font-size:20px;padding:0 24px}
.breadcrumb select{min-width:220px;appearance:none;-webkit-appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%231a1d21' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 20px center;padding-right:48px;cursor:pointer;font-family:inherit;color:var(--ink)}
.breadcrumb>span{color:var(--water)}
.page-tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--gray-300);margin-top:46px}
.page-tabs a{padding:18px 26px;color:var(--gray-500);font-size:15px;font-weight:600;border-bottom:3px solid transparent;margin-bottom:-1px;transition:color .2s}
.page-tabs a:hover{color:var(--ink)}
.page-tabs a.active{color:var(--water);border-bottom-color:var(--water);font-weight:700}
.page-tabs.sub2{margin-top:0;border-bottom:0;background:var(--gray-100);padding:6px 10px;gap:2px}
.page-tabs.sub2 a{padding:10px 16px;font-size:14px;border:0;margin:0}
.page-tabs.sub2 a small{font-size:11px;color:var(--gray-500);margin-left:2px;font-weight:500}
.page-tabs.sub2 a.active{background:#fff;color:var(--water);box-shadow:0 2px 8px rgba(0,0,0,.05)}
.eyebrow{font-size:13px;color:var(--water);font-weight:700;letter-spacing:.18em;margin-bottom:12px}
.page-intro{margin-bottom:50px}
.page-intro h2{font-family:var(--f-head);font-weight:800;font-size:clamp(30px,3vw,42px);letter-spacing:-.01em;margin-bottom:14px}
.page-intro p{max-width:760px;color:var(--gray-700)}
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 24px}
.product-grid.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
.pcard{display:block;min-width:0}
.pcard .media{overflow:hidden;background:#e9eef2;aspect-ratio:1.35;border-radius:16px 16px 0 0;max-width:100%}
.pcard .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.pcard .media.contain{background:#fff;border:1px solid var(--gray-300);border-bottom:0}
.pcard .media.contain img{object-fit:contain;padding:8%}
.pcard:hover .media img{transform:scale(1.04)}
.pcard .card-body{padding:22px 0 16px;border-bottom:1px solid #cfd8df}
.pcard small{color:var(--water);letter-spacing:.08em;font-size:11px;font-weight:700}
.pcard h3{font-size:21px;margin:6px 0 10px}
.pcard .arrow{float:right;color:var(--water)}
.pcard p{font-size:14px;color:var(--gray-700)}
.pcard:hover h3{color:var(--water)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split.top{align-items:start}
.sum-img{background:#fff;border:1px solid var(--gray-300);border-radius:18px;aspect-ratio:1.4;display:grid;place-items:center;overflow:hidden}
.sum-img img{width:100%;height:100%;object-fit:contain;padding:6%}
.sum-img.cover img{object-fit:cover;padding:0}
.product-summary h2{font-family:var(--f-head);font-weight:800;font-size:clamp(30px,3vw,42px);margin-bottom:16px}
.product-summary>div>p:not(.eyebrow){color:var(--gray-700);font-size:17px}
.sum-meta{display:flex;gap:28px;margin-top:24px;padding-top:20px;border-top:1px solid var(--gray-300)}
.sum-meta li{font-size:22px;font-weight:700}
.sum-meta b{display:block;font-size:12px;color:var(--gray-500);font-weight:600;letter-spacing:.06em}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.product-detail-tabs{display:flex;flex-wrap:wrap;background:var(--gray-100);margin:64px 0 10px}
.product-detail-tabs a{padding:17px 30px;border-right:1px solid var(--gray-300);font-weight:600;font-size:15px}
.product-detail-tabs a:hover{color:var(--water)}
.section-title{font-family:var(--f-head);font-weight:800;font-size:28px;margin:64px 0 22px}
.section-title small{font-size:.55em;color:var(--gray-500);font-weight:600;margin-left:4px}
.section .muted{color:var(--gray-500);font-size:14px}
.table-wrap{overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;text-align:left;border-top:2px solid var(--navy);font-size:15px}
.spec-table th,.spec-table td{padding:18px 24px;border-bottom:1px solid var(--gray-300);vertical-align:top}
.spec-table th{background:var(--gray-100);width:22%;font-weight:600;white-space:nowrap}
.spec-table td{line-height:1.8}
.brand-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--gray-300);border:1px solid var(--gray-300)}
.brand-grid span{background:#fff;aspect-ratio:1.65;display:block}
.brand-grid img{width:100%;height:100%;object-fit:contain;padding:8px}
.location-box{background:var(--gray-100);padding:50px;text-align:center}
.location-box h3{font-size:24px;margin-bottom:28px;line-height:1.5}
.location-box .spec-table{text-align:left;background:#fff}
.board{border-top:2px solid var(--navy)}
.board-row{display:grid;grid-template-columns:70px 1fr auto;gap:18px;align-items:center;padding:22px 14px;border-bottom:1px solid var(--gray-300);transition:background .2s}
.board-row:hover{background:var(--gray-100)}
.board-row b{font-weight:600}
.board-row>span:last-child{font-size:13px;color:var(--gray-500)}
.board-row .ext{font-family:var(--f-head);font-size:12px;letter-spacing:.1em;color:#fff;background:var(--red);padding:4px 8px;text-align:center;justify-self:start}
.contact-wrap{margin-top:0}
@media (max-width:1080px){.subhero{margin-left:24px;border-bottom-left-radius:48px;height:280px}.product-grid,.product-grid.c4{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr;gap:36px}.brand-grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:680px){.subhero{margin-left:16px;height:220px;border-bottom-left-radius:40px}.breadcrumb{min-height:54px;margin-top:-27px}.breadcrumb>a,.breadcrumb>span,.breadcrumb>select{padding:0 12px;font-size:12px}.breadcrumb select{min-width:0;flex:1;padding-right:30px;background-position:right 10px center}.breadcrumb>span{flex:1}.page-tabs{flex-wrap:nowrap;overflow-x:auto;margin-top:26px}.page-tabs a{white-space:nowrap;padding:14px 16px;font-size:14px}.product-grid,.product-grid.c4{gap:26px 14px}.pcard h3{font-size:17px}.pcard p{font-size:13px}.product-detail-tabs a{padding:14px 16px;font-size:14px}.spec-table th,.spec-table td{padding:14px;font-size:14px}.brand-grid{grid-template-columns:repeat(3,1fr)}.location-box{padding:30px 18px}.board-row{grid-template-columns:52px 1fr}.board-row>span:last-child{grid-column:2}.section{padding:60px 0 80px}}

/* v4 메인 1번 슬라이드: 버너 헤드 화염 + 메뉴 간격 */
.hero-media .kb-flame{background:radial-gradient(circle at 68% 50%,#16233a 0%,#0b111c 55%,#070a11 100%)}
.kb-flame canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.gnb>li>a{padding:0 34px}
.gnb>li>a::after{left:34px;right:34px}
@media (max-width:1280px){.gnb>li>a{padding:0 24px}.gnb>li>a::after{left:24px;right:24px}}
.hero-media .kb-oil{background:radial-gradient(circle at 70% 50%,#2a1610 0%,#120b0a 55%,#08070a 100%)}
.hero-media .kb-tube{background:radial-gradient(circle at 68% 50%,#18222e 0%,#0c1118 60%,#070a0f 100%)}

/* v5 메뉴 오른쪽 정렬: 로고 | ··· | 메뉴 · 전화 · 견적 문의 */
.header .wrap{justify-content:flex-start}
.header nav{margin-left:auto;margin-right:24px;height:100%}
.h-util{padding-left:24px;border-left:1px solid var(--gray-300);height:32px}
.gnb .sub.mega{left:auto;right:-120px;transform:translate(0,8px)}
.gnb>li:hover .sub.mega{transform:translate(0,0)}
@media (max-width:1080px){.h-util{border-left:0;padding-left:0;margin-left:auto}}

/* v6 줄 맞춤 정리
   - 제품 사진은 원본 비율(3:2)로 박스를 맞춰 여백 없이 꽉 채움
   - 카드 본문 높이를 같은 줄끼리 통일해 하단 선이 한 줄로 맞도록 */
.pcard{display:flex;flex-direction:column;height:100%}
.pcard .media,.pcard .media.contain{aspect-ratio:3/2;border:1px solid var(--gray-300);border-radius:16px 16px 0 0;background:#fff}
.pcard .media img,.pcard .media.contain img{object-fit:cover;padding:0}
.pcard .card-body{flex:1;display:flex;flex-direction:column}
.pcard .card-body p{flex:1}
.product-grid{align-items:stretch}
.mimg{aspect-ratio:3/2}
.mimg img{object-fit:cover}
.mimg.empty img{object-fit:contain}
.mgrid{align-items:start}
.mname{min-height:2.9em}
.sum-img{aspect-ratio:3/2}
.sum-img img{object-fit:cover;padding:0}
.biz-card .img.prod{background-size:cover;background-color:#fff}
.v-card .v-img.prod div{background-size:cover}
.values-grid .v-card{height:100%}
.values-grid .v-body{flex:1}
.news-cards{align-items:start}
.news-card h3{min-height:2.9em}
.feat-grid{align-items:stretch}
.feat{height:100%}
.pn a{height:100%}
@media (max-width:680px){.news-card h3{min-height:0}}

/* v7 모델 상세 — 사양표 2단 · 도면 · 특징 */
.spec-2col{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.spec-card{border:1px solid var(--gray-300);background:#fff;padding:30px 32px 34px}
.spec-card h3{font-size:19px;padding-bottom:16px;border-bottom:2px solid var(--ink);margin-bottom:6px}
.spec-card .spec-table{border-top:0;font-size:15px}
.spec-card .spec-table th{background:transparent;width:46%;font-weight:600;padding:13px 0;white-space:normal;color:var(--gray-700)}
.spec-card .spec-table td{padding:13px 0;font-weight:600}
.spec-card .spec-table tr:last-child th,.spec-card .spec-table tr:last-child td{border-bottom:0}
.diagram{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.diagram.one{grid-template-columns:1fr}
.diagram figure{margin:0;border:1px solid var(--gray-300);background:#fff;padding:22px;display:flex;flex-direction:column}
.diagram figure img{width:100%;height:auto;cursor:zoom-in;background:#fff}
.diagram figcaption{margin-top:auto;padding-top:16px;text-align:center;font-size:14px;font-weight:600;color:var(--gray-700)}
.feat-grid.c2{grid-template-columns:1fr 1fr}
.feat-grid.c2 .feat .t b{display:block;font-family:var(--f-head);font-size:13px;color:var(--water);letter-spacing:.1em;margin-bottom:8px}
.feat-grid.c2 .feat .t p{font-size:15px;color:var(--gray-700);line-height:1.75}
.note{font-size:15px;padding:20px 24px;border-left:3px solid var(--water);background:var(--gray-100);color:var(--gray-700)}
.note b{color:var(--ink);margin-right:8px}
.mcard .mgo{font-size:12px;font-weight:700;color:var(--water);margin-top:-4px}
.mcard:hover .mgo{text-decoration:underline}
@media (max-width:860px){.spec-2col{grid-template-columns:1fr}.diagram{grid-template-columns:1fr}.feat-grid.c2{grid-template-columns:1fr}}
@media (max-width:680px){.spec-card{padding:22px 20px 26px}.diagram figure{padding:14px}}

/* ===== v8: 인사말 서명 · 폼 오류 메시지 ===== */
.intro .sign{margin-top:26px;padding-top:20px;border-top:1px solid var(--gray-300);
 font-size:15px;color:var(--gray-700)}
.intro .sign b{font-family:'Gothic A1',sans-serif;font-size:19px;font-weight:800;color:var(--navy);
 letter-spacing:-.3px;margin-left:6px}
.form-msg.err{color:var(--red)}
.contact-wrap .sec-desc b{color:var(--navy);font-weight:700}

/* ===== v9: 사진자료실 썸네일 꽉 채우기 ===== */
.gallery{gap:8px}
.gallery .g-item{aspect-ratio:1;overflow:hidden;display:block;background:#e8ecf0;position:relative;border-radius:2px}
.gallery .g-item img{width:100%;height:100%;object-fit:cover;object-position:center;display:block;
 transition:transform .7s var(--ease)}
.gallery .g-item:hover img{transform:scale(1.07)}
.gallery .g-item::after{content:attr(data-name);position:absolute;left:0;right:0;bottom:0;
 padding:26px 12px 10px;font-size:12px;font-weight:600;color:#fff;line-height:1.3;
 background:linear-gradient(0deg,rgba(10,18,32,.78),transparent);
 opacity:0;transition:opacity .25s;pointer-events:none;
 overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gallery .g-item:hover::after{opacity:1}
@media(min-width:1400px){.gallery{grid-template-columns:repeat(5,1fr)}}
@media(max-width:560px){.gallery{grid-template-columns:1fr 1fr;gap:6px}}

/* ===== v10: PDF 자료실 ===== */
.pdf-filter{display:flex;flex-wrap:wrap;gap:8px;margin:40px 0 8px}
.pdf-filter .chip{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 15px;
 border:1px solid var(--gray-300);border-radius:20px;background:#fff;font-size:13.5px;font-weight:600;
 cursor:pointer;color:var(--gray-700);transition:.18s;font-family:inherit}
.pdf-filter .chip b{font-weight:800;color:var(--water);font-size:12.5px}
.pdf-filter .chip:hover{border-color:var(--water);color:var(--navy)}
.pdf-filter .chip.on{background:var(--navy);border-color:var(--navy);color:#fff}
.pdf-filter .chip.on b{color:var(--aqua)}
.pdf-group{margin-top:48px}
.pdf-group[hidden]{display:none}
.pdf-group .section-title{display:flex;align-items:baseline;gap:10px}
.pdf-group .section-title .go{margin-left:auto;font-size:13px;font-weight:600;color:var(--water);
 font-family:'Noto Sans KR',sans-serif}
.pdf-group .section-title .go:hover{text-decoration:underline}
.board-row .fsz{margin-left:auto;font-size:12.5px;color:var(--gray-600);font-variant-numeric:tabular-nums;
 white-space:nowrap;padding-left:14px}
@media(max-width:600px){
 .pdf-group .section-title .go{margin-left:0;width:100%}
 .board-row .fsz{display:none}
}