/* ============================================================
   GROUP TK — GLOBAL STYLESHEET  (공통 블록: TOKENS + HEADER + FOOTER + 공통 유틸 + 애니)
   1단계 확정본. 2단계부터 모든 페이지가 이 파일을 그대로 링크해서 사용.
   이 파일 아래쪽 "PAGE: index" 구역만 페이지별 고유 CSS(개발자가 분리 예정).
   ============================================================ */

/* ===================== [TOKENS] ===================== */
:root{
  /* color */
  --black:#000;
  --white:#fff;
  --ink:#141414;            /* 밝은 섹션 본문 텍스트 */
  --ink-soft:#3a3a3a;
  --gray:#9a9a9a;
  --line:rgba(255,255,255,.14);
  --gold:#e9b553;           /* 브랜드 골드 (원본 theme-color / nav active) */
  --blue:#1f6fe0;           /* 브랜드 블루 (블루 밴드) */
  --blue-soft:#7fb2e8;
  --bg-light:#f5f5f5;       /* WWB 섹션 배경 */
  /* motion */
  --ease:cubic-bezier(.22,.61,.36,1);
  /* layout */
  --nav-h:82px;
  --container:1600px;
  --radius:10px;
  --shadow:0 6px 24px rgba(0,0,0,.18);
}

/* ===================== RESET / BASE ===================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Pretendard','Pretendard Variable',-apple-system,system-ui,sans-serif;
  background:var(--black);color:var(--white);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* 2-language toggle: body[data-lang] 로 한/영 span 노출 제어 */
body[data-lang="ko"] .en{display:none}
body[data-lang="en"] .ko{display:none}

/* ===================== [HEADER] ===================== */
#header{
  position:fixed;top:0;left:0;width:100%;z-index:1000;height:var(--nav-h);
  display:flex;align-items:center;background:rgba(0,0,0,.18);backdrop-filter:blur(2px);
  transition:background .4s var(--ease),height .4s var(--ease),box-shadow .4s var(--ease);
}
#header.scrolled{background:rgba(0,0,0,.94);height:64px;box-shadow:0 1px 0 var(--line)}
.header-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo img{height:44px;width:auto;transition:height .4s var(--ease)}
#header.scrolled .logo img{height:36px}

.nav{display:flex;align-items:center;gap:36px}
.nav-list{display:flex;align-items:center;gap:40px}
.nav-list>li>a{
  font-weight:700;font-size:18px;letter-spacing:.06em;position:relative;padding:8px 0;
  display:inline-block;transition:color .25s var(--ease);
}
.nav-list>li>a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);transition:width .35s var(--ease)}
.nav-list>li>a:hover{color:var(--gold)}
.nav-list>li>a:hover::after{width:100%}

.has-dropdown{position:relative}
.dropdown{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);
  background:#fff;border-radius:4px;min-width:214px;padding:0;
  box-shadow:0 6px 12px rgba(0,0,0,.175);
  opacity:0;visibility:hidden;transition:.3s var(--ease);
}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown li a{display:block;padding:11px 20px;font-size:14px;color:#212121;transition:.18s;white-space:nowrap}
.dropdown li:first-child a{border-radius:4px 4px 0 0}
.dropdown li:last-child a{border-radius:0 0 4px 4px}
.dropdown li a:hover{background:var(--gold);color:#fff}

.lang-toggle{
  display:flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:40px;
  padding:7px 14px;font-size:13px;font-weight:700;letter-spacing:.08em;transition:.3s;
}
.lang-toggle .flag{width:20px;height:14px;border-radius:2px;object-fit:cover;display:block}
.lang-toggle:hover{background:#fff;color:#000;border-color:#fff}

.menu-btn{display:none;flex-direction:column;gap:5px;width:30px;height:24px;justify-content:center}
.menu-btn span{display:block;height:2px;width:100%;background:#fff;transition:.3s}
.menu-btn.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn.open span:nth-child(2){opacity:0}
.menu-btn.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.mobile-drawer{
  position:fixed;inset:0 0 0 auto;top:0;height:100vh;width:min(84vw,360px);z-index:1200;
  background:#0a0a0a;transform:translateX(100%);transition:transform .4s var(--ease);
  padding:96px 0 40px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer ul{padding:0 30px}
.mobile-drawer li{border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-drawer li a{display:block;padding:15px 4px;font-weight:600;font-size:17px}
.mobile-drawer li.sub a{padding-left:18px;font-size:14.5px;color:#b7b7b7;font-weight:500}
.lang-toggle-m{padding:16px 4px;font-weight:700;font-size:16px;color:var(--gold)}
.drawer-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1100;opacity:0;visibility:hidden;transition:.35s}
.drawer-backdrop.open{opacity:1;visibility:visible}

/* ===================== [FOOTER] ===================== */
.footer{background:#000;border-top:1px solid var(--line);padding:70px 40px 40px}
.footer-inner{max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.footer-brand img{height:40px;margin-bottom:20px;opacity:.92}
.footer-co{font-size:16px;font-weight:700;margin-bottom:8px}
.footer-addr{font-size:14px;color:var(--gray);font-weight:300}
.footer-contact{text-align:right}
.footer-label{font-weight:700;letter-spacing:.1em;margin-bottom:12px;color:var(--gold)}
.footer-contact p{font-size:14px;color:#cfcfcf;margin-bottom:6px}
.footer-copy{max-width:1400px;margin:48px auto 0;padding-top:24px;border-top:1px solid var(--line);font-size:12.5px;color:#6d6d6d;letter-spacing:.04em}

/* ===================== [공통 유틸 · 버튼] ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;font-size:14px;font-weight:700;letter-spacing:.03em;border-radius:3px;
  transition:.3s var(--ease);white-space:nowrap;text-align:center;
}
.btn-outline{border:1.5px solid rgba(255,255,255,.6)}
.btn-outline:hover{background:#fff;color:#000;border-color:#fff}
.btn-solid{background:#fff;color:#000}
.btn-solid:hover{background:var(--gold);color:#000}
.btn-dark{background:#111;color:#fff;border:1px solid #333;padding:13px 34px;border-radius:40px}
.btn-dark:hover{background:#fff;color:#000}

/* ===================== [애니 · REVEAL] ===================== */
.reveal{opacity:0;transform:translateY(38px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===================== [패럴랙스 배경 공용 폴백] =====================
   섹션 자체(또는 ::before)에 background-attachment:fixed가 걸린 배경에
   class="parallax-fixed"를 추가하면, iOS 등 모바일에서 fixed 배경이
   깨지는 문제를 이 규칙 하나로 스크롤 폴백 처리한다.
   !important: 각 페이지의 <style> 블록이 style.css보다 뒤에 로드되어
   동일 소스 순서에서는 페이지쪽 background 단축속성이 이겨버리므로,
   공용 유틸리티가 항상 우선하도록 명시. */
@media (max-width:768px){
  .parallax-fixed{background-attachment:scroll!important}
  .parallax-fixed::before{background-attachment:scroll!important}
}
@keyframes marquee{to{transform:translateX(-50%)}}
@keyframes scrolldot{0%{opacity:0;top:8px}40%{opacity:1}80%{opacity:0;top:22px}100%{opacity:0}}
@keyframes pulse{
  0%{box-shadow:0 0 0 3px rgba(255,255,255,.28),0 0 10px 2px rgba(127,178,232,.8)}
  50%{box-shadow:0 0 0 7px rgba(255,255,255,.06),0 0 18px 5px rgba(127,178,232,.5)}
  100%{box-shadow:0 0 0 3px rgba(255,255,255,.28),0 0 10px 2px rgba(127,178,232,.8)}
}

/* ============================================================
   PAGE: index (메인페이지 고유 CSS — 개발자가 나중에 분리 가능)
   ============================================================ */

/* ---------- HERO ---------- */
.hero{position:relative;height:100vh;min-height:660px;overflow:hidden}
.hero-video{position:absolute;inset:0;z-index:0;pointer-events:none;background:#000 url('https://i.ytimg.com/vi/eXeaQ34pgq4/maxresdefault.jpg') center/cover no-repeat}
.hero-video iframe{position:absolute;top:50%;left:50%;width:100vw;height:56.25vw;min-height:100vh;min-width:177.77vh;transform:translate(-50%,-50%)}
.hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(0,0,0,.5),rgba(0,0,0,.28) 40%,rgba(0,0,0,.72))}
.hero-content{position:absolute;top:24%;left:0;right:0;z-index:2;text-align:center;padding:0 24px}
.hero-title{font-weight:900;line-height:.92;letter-spacing:.01em;font-size:clamp(46px,9vw,130px);text-shadow:0 4px 40px rgba(0,0,0,.5)}
.hero-title .l{display:block}
.hero-since{margin-top:20px;font-size:clamp(15px,2vw,30px);font-weight:700;letter-spacing:.3em}

.hero-card{
  position:absolute;z-index:3;right:8%;top:52%;width:min(360px,86vw);
  background:rgba(0,0,0,.8);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.12);
  border-radius:6px;padding:30px 30px 26px;
}
.hero-card .label{font-size:14px;color:#585858;letter-spacing:.04em;margin-bottom:14px}
.hero-card .brand{font-weight:800;font-size:20px;color:#fff;margin-bottom:12px}
.hero-card-slogan{font-size:14px;color:#cccccc;font-weight:300;line-height:1.7}
.hero-brochure{
  position:absolute;z-index:3;right:8%;top:calc(52% + 168px);width:min(360px,86vw);
  background:rgba(0,0,0,.72);border:1px solid rgba(255,255,255,.14);border-radius:6px;
  padding:15px 22px;display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:#fff;
  transition:.3s var(--ease);
}
.hero-brochure:hover{background:var(--gold);color:#000;border-color:var(--gold)}
.scroll-cue{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;width:26px;height:42px;border:2px solid rgba(255,255,255,.5);border-radius:20px}
.scroll-cue span{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:#fff;border-radius:2px;animation:scrolldot 1.6s infinite}

/* ---------- PARTNER LOGO STRIP ---------- */
.logos{background:#000;padding:30px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.marquee{overflow:hidden;width:100%;-webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
.marquee-track{display:flex;align-items:center;gap:64px;width:max-content;animation:marquee 40s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track img{height:66px;width:auto;object-fit:contain;flex:0 0 auto;opacity:.9;transition:opacity .3s}
.marquee-track img:hover{opacity:1}

/* ---------- OUR VISION + COLLAGE ---------- */
.vision{background:#fff;color:var(--ink);padding:110px 40px 120px}
.vision-head{text-align:center;max-width:920px;margin:0 auto 70px}
.vision-label{font-size:clamp(22px,3vw,32px);font-weight:400;color:#1e1e1e}
.vision-quote{margin-top:22px;font-size:clamp(28px,4.2vw,50px);font-weight:800;letter-spacing:-.01em}
.vision-sub{margin-top:14px;font-size:clamp(15px,1.7vw,22px);color:var(--ink-soft);font-weight:300}
.enterprise-eyebrow{text-align:center;font-size:clamp(22px,3vw,40px);font-weight:900;letter-spacing:.02em;color:#111;margin-bottom:34px}
.collage{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:230px;gap:12px}
.collage figure{position:relative;overflow:hidden;border-radius:6px;background:#111}
.collage img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.collage figure:hover img{transform:scale(1.06)}
.collage .c1{grid-column:1;grid-row:1}
.collage .c2{grid-column:1;grid-row:2}
.collage .c3{grid-column:2;grid-row:1 / span 2}
.collage .c4{grid-column:3;grid-row:1}
.collage .c5{grid-column:3;grid-row:2}
.collage figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.82));color:#fff;display:flex;flex-direction:column;gap:2px}
.collage figcaption b{font-size:15px;font-weight:700}
.collage figcaption span{font-size:12.5px;color:#cfcfcf}

/* ---------- WORLD ENTERPRISE (GLOBE) ---------- */
.world-ent{background:#000;padding:100px 24px 110px;text-align:center;position:relative}
.world-ent-title{font-size:clamp(26px,3.8vw,48px);font-weight:800;letter-spacing:.01em;margin-bottom:20px}
.globe-wrap{position:relative;max-width:960px;margin:0 auto}
.globe-img{width:100%;border-radius:50% 50% 0 0/70% 70% 0 0;-webkit-mask-image:linear-gradient(180deg,#000 78%,transparent);mask-image:linear-gradient(180deg,#000 78%,transparent)}
.pin{position:absolute;transform:translate(-50%,-100%);display:flex;flex-direction:column;align-items:center}
.pin .dot{width:12px;height:12px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.25),0 0 14px 3px rgba(127,178,232,.9);animation:pulse 2.2s infinite}
.pin .plabel{margin-top:6px;font-size:13px;font-weight:700;letter-spacing:.06em;text-shadow:0 2px 8px #000}
.pin-dallas{left:19%;top:66%}
.pin-austin{left:19%;top:86%}
.pin-dubai{left:57%;top:60%}
.pin-seoul{left:80%;top:72%}

/* ---------- WORLD WIDE BUSINESS ---------- */
.wwb{background:var(--bg-light);color:#161616;padding:110px 40px}
.wwb-inner{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:440px 1fr;gap:80px;align-items:start}
.wwb-head{position:sticky;top:110px}
.wwb-eyebrow{font-size:18px;color:#444;letter-spacing:.05em;margin-bottom:8px}
.wwb-title{font-size:clamp(52px,5vw,80px);font-weight:900;line-height:1;letter-spacing:-.02em;word-break:keep-all}
.wwb-sub{font-size:34px;color:#444;margin:16px 0 30px;font-weight:600}
.wwb-cards{display:flex;flex-direction:column;gap:54px}
.wcard{position:relative;min-height:230px;border-radius:10px;overflow:hidden;background-size:cover;background-position:center;display:flex;align-items:center}
.wcard::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.5)}
.wcard-in{position:relative;padding:36px 44px;color:#fff}
.wcard-in h3{font-size:clamp(24px,2.4vw,34px);font-weight:800;margin-bottom:14px;letter-spacing:.01em}
.wcard-in ul{display:flex;flex-wrap:wrap;gap:8px 18px}
.wcard-in li{font-size:16px;font-weight:500;position:relative;padding-left:16px}
.wcard-in li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:#fff}
.wcard-desc{margin-top:22px;font-size:16px;line-height:1.9;color:#3c3c3c;font-weight:300;max-width:900px}

/* ---------- BLUE BRAND BAND (흰색 GROUP TK 워드마크 로고락업 마퀴) ---------- */
.brandband{background:var(--blue);padding:30px 0;overflow:hidden}
.brandband-marquee{overflow:hidden;width:100%}
.bb-track{display:flex;align-items:center;gap:60px;width:max-content;animation:marquee 32s linear infinite}
.bb-track img{height:48px;width:auto;flex:0 0 auto;filter:brightness(0) invert(1)}

/* ---------- HQ BUILDING (사옥) ---------- */
.hq{background:linear-gradient(180deg,#a9cef2 0%,#c9def5 40%,#eef4fb 100%);line-height:0;text-align:center;overflow:hidden}
.hq-img{width:100%;max-width:1600px;display:block;margin:0 auto}
/* 흰 GROUP TK 로고 롤링 띠 (오른쪽→왼쪽, 원본 재현) */
.hq-band{overflow:hidden;padding:44px 0 10px}
.hq-band-track{display:flex;align-items:center;gap:72px;width:max-content;animation:marquee 28s linear infinite}
/* 흰색 단색 로고 전용 에셋(tk-logo-white.png, 여백 트림됨). 글자 높이가
   이전 컬러 로고(274d5a89db810.png @56px, 글자≈41px)와 동일하도록 54px로 세팅 */
.hq-band-track img{height:54px;width:auto;display:block;flex:0 0 auto}
@media (max-width:768px){
  .hq-band{padding:26px 0 6px}
  .hq-band-track img{height:35px}
  .hq-band-track{gap:44px}
}

/* ===================== RESPONSIVE ===================== */
@media (max-width:1024px){
  .header-inner{padding:0 24px}
  .nav{display:none}
  .menu-btn{display:flex}
  .wwb-inner{grid-template-columns:1fr;gap:40px}
  .wwb-head{position:static}
}
@media (max-width:768px){
  :root{--nav-h:64px}
  .hero-content{top:15%}
  .hero-card{right:50%;transform:translateX(50%);top:auto;bottom:120px;text-align:center}
  .hero-brochure{right:50%;transform:translateX(50%);top:auto;bottom:56px;justify-content:center}
  .collage{grid-template-columns:1fr 1fr;grid-auto-rows:180px}
  .collage .c3{grid-column:1 / span 2;grid-row:auto}
  .collage .c1,.collage .c2,.collage .c4,.collage .c5{grid-column:auto;grid-row:auto}
  .globe-img{border-radius:0;-webkit-mask-image:none;mask-image:none}
  .pin .plabel{font-size:11px}
  .vision,.world-ent,.wwb{padding-left:20px;padding-right:20px}
  .footer-inner{flex-direction:column}
  .footer-contact{text-align:left}
}