/* =============================================
   LJ JAPAN – Corporate Website  v2.0
   디자인 참조: POSCO Japan / Nippon Steel Trading
   컬러: White + Charcoal (#1e2530) + Navy accent (#0a3572)
   ============================================= */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

:root {
  /* ── Color System ── */
  --c-navy:      #0a3572;   /* 딥 네이비 – 주 포인트 */
  --c-navy-dark: #061f47;   /* 더 어두운 네이비 */
  --c-charcoal:  #1e2530;   /* 차콜 – 텍스트, 헤더 */
  --c-steel:     #2d4a6e;   /* 스틸 블루 – 서브 포인트 */
  --c-white:     #ffffff;
  --c-off-white: #f7f8fa;   /* 섹션 배경용 아이보리 화이트 */
  --c-gray-50:   #f4f5f7;
  --c-gray-100:  #e8eaed;
  --c-gray-300:  #b0b8c1;
  --c-gray-500:  #6b7280;
  --c-gray-700:  #374151;
  --c-gold:      #b8922a;   /* 포인트 골드 (절제) */

  /* ── Typography ── */
  --font: 'Inter', 'Noto Sans KR', 'Noto Sans JP', sans-serif;

  /* ── Spacing ── */
  --section-py: 100px;
  --header-h: 70px;
  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 16px;

  /* ── Shadow ── */
  --shadow-sm: 0 1px 4px rgba(0,0,0,.08);
  --shadow:    0 4px 20px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);

  /* ── Transition ── */
  --t: .3s ease;
}

body {
  font-family: var(--font);
  color: var(--c-charcoal);
  background: var(--c-white);
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; object-fit: cover; }
button { font-family: var(--font); }

.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--c-gray-50); }
::-webkit-scrollbar-thumb { background: var(--c-navy); border-radius: 3px; }

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* 상세 페이지(biz-detail-page)에서는 reveal 요소를 처음부터 보이게 설정
   JS IntersectionObserver가 동작하기 전 콘텐츠가 숨겨지는 것을 방지 */
.biz-detail-page .reveal {
  opacity: 1;
  transform: none;
}

/* ==============================================
   HEADER
   ============================================== */
#main-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-gray-100);
  z-index: 1000;
  transition: box-shadow var(--t);
}
#main-header.scrolled { box-shadow: var(--shadow); }

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: auto;
}
.logo-mark { display: flex; align-items: baseline; gap: 1px; }
.logo-lj {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--c-charcoal);
  letter-spacing: -.5px;
}
.logo-japan {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--c-navy);
  letter-spacing: -.5px;
}
.logo-divider {
  display: block;
  width: 1px;
  height: 18px;
  background: var(--c-gray-300);
}
.logo-kr {
  font-size: .72rem;
  color: var(--c-gray-500);
  font-weight: 400;
  white-space: nowrap;
  letter-spacing: .02em;
}

/* Nav */
#main-nav { display: flex; }
#main-nav ul {
  display: flex;
  align-items: center;
  gap: 0;
}
#main-nav a {
  display: block;
  padding: 0 1rem;
  height: var(--header-h);
  line-height: var(--header-h);
  font-size: .86rem;
  font-weight: 500;
  color: var(--c-gray-700);
  letter-spacing: .02em;
  position: relative;
  transition: color var(--t);
  white-space: nowrap;
}
#main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 2px;
  background: var(--c-navy);
  transition: left var(--t), right var(--t);
}
#main-nav a:hover { color: var(--c-navy); }
#main-nav a:hover::after { left: 1rem; right: 1rem; }

.nav-contact {
  background: var(--c-navy) !important;
  color: var(--c-white) !important;
  border-radius: var(--radius-sm) !important;
  margin-left: .5rem !important;
  padding: 0 1.2rem !important;
  height: 38px !important;
  line-height: 38px !important;
  align-self: center;
  font-size: .84rem !important;
}
.nav-contact::after { display: none !important; }
.nav-contact:hover { background: var(--c-steel) !important; color: var(--c-white) !important; }

/* ── Nav Dropdown ── */
.nav-has-dropdown {
  position: relative;
}

/* 드롭다운 화살표 — 완전 제거 */
.nav-has-dropdown > a::before { display: none !important; }

/* 드롭다운 패널 */
.nav-dropdown {
  display: block;
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 120px;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(10,53,114,.10);
  border-radius: 10px;
  box-shadow: 0 6px 24px rgba(10,53,114,.11), 0 1px 4px rgba(0,0,0,.06);
  padding: 5px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s cubic-bezier(.4,0,.2,1), transform .18s cubic-bezier(.4,0,.2,1);
  z-index: 2000;
  flex-direction: column;
  gap: 0;
}

/* 드롭다운 표시 — hover (PC) */
.nav-has-dropdown:hover .nav-dropdown,
.nav-has-dropdown.open .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* 드롭다운 항목 링크 스타일 */
.nav-dropdown li {
  display: block;
}
.nav-dropdown li a {
  display: block;
  height: auto;
  line-height: 1;
  padding: 9px 18px;
  font-size: .80rem;
  font-weight: 500;
  color: var(--c-gray-700);
  white-space: nowrap;
  transition: background var(--t), color var(--t);
  letter-spacing: .02em;
  text-align: center;
}
.nav-dropdown li a::after { display: none !important; }
.nav-dropdown li a::before { display: none !important; }
.nav-dropdown li a:hover {
  background: #eef3fb;
  color: var(--c-navy);
}
.nav-dropdown li a.current {
  color: var(--c-navy);
  font-weight: 700;
  background: #eef3fb;
}

/* 드롭다운 항목 구분선 */
.nav-dropdown li + li {
  border-top: 1px solid rgba(10,53,114,.07);
}

/* 활성화된 사업 영역 nav */
.nav-has-dropdown.active > a {
  color: var(--c-navy);
}

/* Lang */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: 1.5rem;
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.lang-btn {
  padding: .35rem .65rem;
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .04em;
  background: transparent;
  border: none;
  color: var(--c-gray-500);
  cursor: pointer;
  transition: all var(--t);
  border-right: 1px solid var(--c-gray-100);
}
.lang-btn:last-child { border-right: none; }
.lang-btn:hover { background: var(--c-gray-50); color: var(--c-navy); }
.lang-btn.active { background: var(--c-navy); color: var(--c-white); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: 1rem;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--c-charcoal);
  border-radius: 2px;
  transition: all var(--t);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==============================================
   HERO  (슬라이더)
   ============================================== */
#hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

/* Slides */
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 7s ease;
}
.hero-slide.active .hero-slide-bg { transform: scale(1); }
.hero-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(6,31,71,.82) 0%,
    rgba(10,53,114,.65) 45%,
    rgba(10,53,114,.25) 100%
  );
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: var(--header-h);
  max-width: 760px;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: hFadeIn .9s .3s forwards;
}
.hero-eyebrow-line {
  display: block;
  width: 40px; height: 2px;
  background: var(--c-gold);
}
.hero-eyebrow-text {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(255,255,255,.75);
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: hFadeIn .9s .55s forwards;
}
.hero-title-en {
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  font-weight: 800;
  color: var(--c-white);
  letter-spacing: -.02em;
  line-height: 1;
}
.hero-title-kr {
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 300;
  color: rgba(255,255,255,.72);
  letter-spacing: .12em;
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(255,255,255,.78);
  margin-bottom: 2.4rem;
  opacity: 0;
  animation: hFadeIn .9s .75s forwards;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: hFadeIn .9s .95s forwards;
}
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  padding: .8rem 2rem;
  background: var(--c-white);
  color: var(--c-navy);
  font-size: .9rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: .03em;
  transition: all var(--t);
}
.btn-hero-primary:hover { background: var(--c-gold); color: var(--c-white); }
.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  padding: .8rem 2rem;
  background: transparent;
  color: var(--c-white);
  font-size: .9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,.45);
  letter-spacing: .03em;
  transition: all var(--t);
}
.btn-hero-ghost:hover { border-color: var(--c-white); background: rgba(255,255,255,.1); }

/* Indicators */
.hero-indicators {
  position: absolute;
  bottom: 110px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}
.hero-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
  border: none;
  cursor: pointer;
  transition: all var(--t);
  padding: 0;
}
.hero-dot.active { background: var(--c-white); width: 28px; border-radius: 4px; }

/* Slide counter */
.hero-counter {
  position: absolute;
  right: 3%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,.55);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .1em;
}
.hero-counter-cur { color: var(--c-white); font-size: 1.3rem; font-weight: 700; }

/* Tag bar */
.hero-tagbar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 70px;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-top: 2px solid var(--c-navy);
  z-index: 3;
}
.hero-tagbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.hero-tag-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: 0 2.5rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--c-charcoal);
  letter-spacing: .04em;
}
.hero-tag-item i { color: var(--c-navy); font-size: .95rem; }
.hero-tag-sep {
  width: 1px;
  height: 24px;
  background: var(--c-gray-100);
}

/* Scroll hint */
.hero-scroll {
  position: absolute;
  left: 3%;
  bottom: 90px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero-scroll-line {
  display: block;
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,.4);
  animation: scrollPulse 2s ease infinite;
}
.hero-scroll-text {
  font-size: .65rem;
  letter-spacing: .18em;
  color: rgba(255,255,255,.5);
  writing-mode: vertical-lr;
}
@keyframes scrollPulse {
  0%,100% { opacity: .4; }
  50%      { opacity: 1; }
}
@keyframes hFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}

/* ==============================================
   SECTION SHARED STYLES
   ============================================== */
section { padding: var(--section-py) 0; }

.section-header { margin-bottom: 3.5rem; }

.section-label-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: .75rem;
}
.section-label-line {
  display: block;
  width: 32px; height: 2px;
  background: var(--c-navy);
}
.section-label-line--light { background: rgba(255,255,255,.6); }
.section-label-text {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--c-navy);
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--c-charcoal);
  letter-spacing: -.02em;
  line-height: 1.25;
}
.section-title--light { color: var(--c-white); }

/* ==============================================
   ABOUT / MESSAGE
   ============================================== */
#about { background: var(--c-white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.about-lead {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--c-charcoal);
  line-height: 1.7;
  margin-bottom: 1.4rem;
  border-left: 3px solid var(--c-navy);
  padding-left: 1.25rem;
}
.about-body {
  font-size: .95rem;
  color: var(--c-gray-500);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.btn-line {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1.5rem;
  font-size: .88rem;
  font-weight: 600;
  color: var(--c-navy);
  letter-spacing: .04em;
  border-bottom: 1.5px solid var(--c-navy);
  padding-bottom: 2px;
  transition: all var(--t);
}
.btn-line:hover { gap: .9rem; }
.btn-line i { font-size: .8rem; }

/* About visual – KPI grid */
.about-visual { display: flex; flex-direction: column; gap: 1.25rem; }

.about-kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--c-gray-100);
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-kpi-card {
  background: var(--c-white);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  transition: background var(--t);
}
.about-kpi-card:hover { background: var(--c-off-white); }
.about-kpi-card--accent {
  background: var(--c-navy);
}
.about-kpi-card--accent:hover { background: var(--c-navy-dark); }
.about-kpi-card--accent .kpi-num,
.about-kpi-card--accent .kpi-label { color: var(--c-white); }
.about-kpi-card--accent .kpi-label { opacity: .65; }

.kpi-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--c-charcoal);
  line-height: 1;
  letter-spacing: -.03em;
}
.kpi-unit { font-size: 1.4rem; font-weight: 700; }
.kpi-icon {
  font-size: 1.8rem;
  color: var(--c-navy);
  margin-bottom: .15rem;
}
.kpi-label {
  font-size: .78rem;
  color: var(--c-gray-500);
  font-weight: 500;
  letter-spacing: .04em;
}

/* About keywords */
.about-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.about-kw {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1rem;
  border: 1.5px solid var(--c-gray-100);
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-gray-700);
  letter-spacing: .03em;
  background: var(--c-white);
  transition: all var(--t);
}
.about-kw:hover {
  border-color: var(--c-navy);
  color: var(--c-navy);
  background: var(--c-off-white);
}
.about-kw i { font-size: .75rem; color: var(--c-navy); }

/* ==============================================
   VISION
   ============================================== */
#vision {
  position: relative;
  overflow: hidden;
  padding: var(--section-py) 0;
}
.vision-bg-img {
  position: absolute;
  inset: 0;
  background: url('../images/hero-factory.jpg') center/cover no-repeat;
}
.vision-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6,31,71,.93) 0%, rgba(10,53,114,.87) 60%, rgba(29,47,80,.82) 100%);
}
.vision-inner { position: relative; z-index: 1; }

.section-label-text { color: var(--c-navy); }
#vision .section-label-text { color: rgba(255,255,255,.65); }

.vision-lead {
  font-size: 1.05rem;
  color: rgba(255,255,255,.75);
  line-height: 1.85;
  max-width: 700px;
  margin-bottom: 3.5rem;
}

.vision-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  overflow: hidden;
}
.vision-item {
  background: rgba(255,255,255,.04);
  padding: 2.5rem 2rem;
  transition: background var(--t);
  border-right: 1px solid rgba(255,255,255,.08);
}
.vision-item:last-child { border-right: none; }
.vision-item:hover { background: rgba(255,255,255,.09); }
.vision-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(255,255,255,.12);
  line-height: 1;
  margin-bottom: 1.2rem;
  letter-spacing: -.04em;
}
.vision-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: .75rem;
}
.vision-content p { font-size: .88rem; color: rgba(255,255,255,.65); line-height: 1.8; }

/* ==============================================
   BUSINESS
   ============================================== */
#business { background: var(--c-off-white); }

.biz-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.biz-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--t), box-shadow var(--t);
}
/* 전체 카드가 링크일 때 */
a.biz-card--link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

/* 카드 호버 시 더보기 버튼도 강조 */
a.biz-card--link:hover .biz-card-more {
  background: var(--c-navy);
  color: #fff;
}
a.biz-card--link:hover .biz-card-more i {
  transform: translateX(3px);
}

.biz-card-img {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.biz-card-img img {
  width: 100%; height: 100%;
  transition: transform .6s ease;
}
.biz-card:hover .biz-card-img img { transform: scale(1.05); }
.biz-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,53,114,.5) 0%, transparent 60%);
}
.biz-card-num {
  position: absolute;
  top: 1rem; left: 1.25rem;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: rgba(255,255,255,.7);
  z-index: 1;
}

.biz-card-body { padding: 1.75rem; }
.biz-card-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--c-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-white);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.biz-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-charcoal);
  margin-bottom: .75rem;
}
.biz-card-body > p {
  font-size: .88rem;
  color: var(--c-gray-500);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--c-gray-100);
}
.biz-card-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.biz-card-list li {
  font-size: .83rem;
  color: var(--c-gray-700);
  padding-left: 1rem;
  position: relative;
}
.biz-card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--c-navy);
}

/* ── Business Card "자세히 보기" Button ── */
.biz-card-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 10px 20px;
  font-size: .82rem;
  font-weight: 700;
  color: var(--c-navy);
  border: 1.5px solid var(--c-navy);
  border-radius: 4px;
  transition: background var(--t), color var(--t);
  pointer-events: none; /* 카드 전체가 링크이므로 버튼은 시각 전용 */
}
.biz-card-more i {
  font-size: .75rem;
  transition: transform var(--t);
}

/* ==============================================
   STRENGTHS
   ============================================== */
#strengths { background: var(--c-white); }

.str-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.str-item {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--c-gray-100);
  position: relative;
  transition: background var(--t);
}
.str-item:last-child { border-right: none; }
.str-item:hover { background: var(--c-off-white); }
.str-item:hover .str-item-icon { background: var(--c-navy); color: var(--c-white); }

.str-item-num {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--c-gray-300);
  margin-bottom: 1.25rem;
}
.str-item-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  background: var(--c-gray-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--c-navy);
  margin-bottom: 1.25rem;
  transition: all var(--t);
}
.str-item h3 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--c-charcoal);
  margin-bottom: .75rem;
}
.str-item p { font-size: .84rem; color: var(--c-gray-500); line-height: 1.8; }

/* ==============================================
   COMPANY PROFILE
   ============================================== */
#profile { background: var(--c-off-white); }

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.profile-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.profile-table th,
.profile-table td {
  padding: 1rem 1.25rem;
  font-size: .9rem;
  border-bottom: 1px solid var(--c-gray-100);
  text-align: left;
}
.profile-table th {
  width: 36%;
  background: var(--c-charcoal);
  color: rgba(255,255,255,.85);
  font-weight: 500;
  font-size: .84rem;
  letter-spacing: .02em;
}
.profile-table td { color: var(--c-charcoal); }
.profile-table tr:last-child th,
.profile-table tr:last-child td { border-bottom: none; }
.profile-table tr:hover td { background: var(--c-gray-50); }

/* 소재지 주소 셀 – 줄바꿈 허용, 폰트 살짝 축소 */
.profile-table td.address-cell {
  font-size: .82rem;
  line-height: 1.65;
  word-break: break-word;
}
.address-line2 {
  display: block;
  margin-top: 3px;
  color: var(--c-gray-500);
  font-size: .78rem;
}

/* History */
.history-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-charcoal);
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--c-navy);
}
.timeline { position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 52px; top: 0; bottom: 0;
  width: 1px;
  background: var(--c-gray-100);
}
.timeline-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--c-gray-100);
}
.timeline-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.timeline-year {
  font-size: .95rem;
  font-weight: 800;
  color: var(--c-navy);
  flex-shrink: 0;
  width: 52px;
  padding-top: 2px;
}
.timeline-content {
  position: relative;
  padding-left: 1.5rem;
}
.timeline-content::before {
  content: '';
  position: absolute;
  left: -7px; top: 7px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--c-white);
  border: 2px solid var(--c-navy);
}
.timeline-content p { font-size: .88rem; color: var(--c-gray-500); line-height: 1.75; }

/* ==============================================
   CTA
   ============================================== */
#cta {
  position: relative;
  overflow: hidden;
  padding: 90px 0;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, var(--c-charcoal) 0%, var(--c-navy-dark) 50%, var(--c-navy) 100%);
}
.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}
.cta-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .22em;
  color: rgba(255,255,255,.45);
  margin-bottom: .75rem;
}
.cta-inner h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--c-white);
  font-weight: 700;
  margin-bottom: .6rem;
  letter-spacing: -.02em;
  line-height: 1.4;
}
.cta-brand {
  display: block;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  color: var(--c-white);
  letter-spacing: .04em;
  line-height: 1.1;
  margin-top: .2rem;
  opacity: .92;
}
.cta-inner > .cta-text > p:last-child {
  font-size: .95rem;
  color: rgba(255,255,255,.65);
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem 2.5rem;
  background: var(--c-white);
  color: var(--c-navy);
  font-size: .95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--t);
  letter-spacing: .03em;
}
.btn-cta:hover { background: var(--c-gold); color: var(--c-white); gap: 1.1rem; }
.btn-cta i { font-size: .85rem; }

/* ==============================================
   FOOTER
   ============================================== */
#main-footer { background: var(--c-charcoal); }

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 3rem;
  padding: 4.5rem 0 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .footer-logo {
  display: flex;
  align-items: baseline;
  gap: 1px;
  margin-bottom: .35rem;
}
.footer-brand .logo-lj { font-size: 1.8rem; font-weight: 800; color: var(--c-white); }
.footer-brand .logo-japan { font-size: 1.8rem; font-weight: 800; color: var(--c-white); }
.footer-jp { font-size: .8rem; color: rgba(255,255,255,.4); margin-bottom: .5rem; }
.footer-tagline { font-size: .78rem; color: rgba(255,255,255,.35); letter-spacing: .04em; }

.footer-links h4,
.footer-info h4 {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 1.25rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .88rem; color: rgba(255,255,255,.55); transition: color var(--t); }
.footer-links a:hover { color: var(--c-white); }
.footer-info p {
  font-size: .86rem;
  color: rgba(255,255,255,.55);
  display: flex;
  align-items: center;
  gap: .65rem;
  margin-bottom: .65rem;
}
.footer-info i { color: var(--c-gold); font-size: .8rem; }

.footer-bottom { padding: 1.5rem 0; }
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-bottom p { font-size: .78rem; color: rgba(255,255,255,.3); }
.footer-lang-switcher {
  display: flex;
  gap: 0;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.footer-lang-switcher .lang-btn {
  border: none;
  border-right: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.4);
  font-size: .75rem;
  padding: .3rem .8rem;
}
.footer-lang-switcher .lang-btn:last-child { border-right: none; }
.footer-lang-switcher .lang-btn:hover { color: var(--c-white); background: rgba(255,255,255,.08); }
.footer-lang-switcher .lang-btn.active { background: rgba(255,255,255,.12); color: var(--c-white); }

/* ==============================================
   CONTACT PAGE  (공통 참조)
   ============================================== */
.contact-hero {
  background: linear-gradient(135deg, var(--c-charcoal), var(--c-navy));
  padding: 140px 0 80px;
  text-align: center;
  color: var(--c-white);
}
.contact-hero h1 { font-size: clamp(2rem,4vw,3rem); font-weight:700; margin-bottom:.75rem; }
.contact-hero p { color: rgba(255,255,255,.7); }

.contact-section { padding: 80px 0; background: var(--c-off-white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: start; }
.contact-info-cards { display: flex; flex-direction: column; gap: 1rem; }
.contact-info-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border-left: 3px solid var(--c-navy);
}
.contact-info-card i { font-size: 1.3rem; color: var(--c-navy); flex-shrink: 0; }
.contact-info-card h4 { font-size: .78rem; font-weight: 700; color: var(--c-navy); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .25rem; }
.contact-info-card p { font-size: .88rem; color: var(--c-gray-500); }

.contact-form-wrap { background: var(--c-white); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow); }
.contact-form-wrap h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.75rem; color: var(--c-charcoal); }

.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: .84rem; font-weight: 600; color: var(--c-charcoal); margin-bottom: .4rem; }
.form-control {
  width: 100%;
  padding: .7rem 1rem;
  border: 1.5px solid var(--c-gray-100);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .9rem;
  color: var(--c-charcoal);
  background: var(--c-white);
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}
.form-control:focus { border-color: var(--c-navy); box-shadow: 0 0 0 3px rgba(10,53,114,.1); }
textarea.form-control { resize: vertical; min-height: 130px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.btn-submit { width: 100%; padding: .9rem; background: var(--c-navy); color: var(--c-white); font-family: var(--font); font-size: .95rem; font-weight: 700; border: none; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--t); margin-top: .25rem; }
.btn-submit:hover { background: var(--c-charcoal); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; }

.form-success { display: none; text-align: center; padding: 2rem; }
.form-success i { font-size: 2.8rem; color: #38a169; margin-bottom: 1rem; }
.form-success h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: .5rem; }
.form-success p { color: var(--c-gray-500); }

/* General CTA btn (contact page back) */
.btn-primary {
  display: inline-block;
  padding: .8rem 2rem;
  background: var(--c-navy);
  color: var(--c-white);
  font-weight: 700;
  font-size: .9rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--t);
  font-family: var(--font);
}
.btn-primary:hover { background: var(--c-charcoal); }

/* ==============================================
   RESPONSIVE
   ============================================== */
@media (max-width: 1100px) {
  .str-grid { grid-template-columns: repeat(2, 1fr); }
  .str-item:nth-child(2) { border-right: none; }
  .str-item:nth-child(1),
  .str-item:nth-child(2) { border-bottom: 1px solid var(--c-gray-100); }
  .biz-cards { gap: 1rem; }
  .hero-tag-item { padding: 0 1.5rem; }
}

@media (max-width: 960px) {
  :root { --section-py: 70px; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-grid .about-visual { order: -1; }
  .vision-items { grid-template-columns: 1fr; gap: 0; }
  .vision-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.08); }
  .vision-item:last-child { border-bottom: none; }
  .biz-cards { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .profile-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-counter { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .logo-kr { display: none; }
  .logo-divider { display: none; }

  /* Mobile Nav */
  #main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--c-white);
    border-bottom: 1px solid var(--c-gray-100);
    padding: 1rem 0;
    transform: translateY(-110%);
    transition: transform var(--t);
    z-index: 999;
    box-shadow: var(--shadow-lg);
  }
  #main-nav.open { transform: translateY(0); }
  #main-nav ul { flex-direction: column; align-items: stretch; }
  #main-nav a { height: auto; line-height: 1; padding: .85rem 1.5rem; }
  #main-nav a::after { display: none; }
  .nav-contact { margin: .5rem 1.5rem 0 !important; padding: .75rem 1.5rem !important; height: auto !important; line-height: 1 !important; }

  /* 모바일 드롭다운 */
  .nav-has-dropdown > a::before { display: none; }
  .nav-dropdown {
    position: static;
    transform: none !important;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--c-gray-100);
    border-radius: 0;
    background: #f7f9fc;
    padding: 4px 0;
    opacity: 1;
    pointer-events: auto;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .nav-has-dropdown.open .nav-dropdown {
    max-height: 200px;
  }
  .nav-dropdown li a {
    padding: .75rem 2rem;
    font-size: .82rem;
  }
  .nav-dropdown li a:hover { padding-left: 2.4rem; }
  .nav-dropdown li + li { border-top: 1px solid var(--c-gray-100); }

  .hamburger { display: flex; }

  /* Hero */
  .hero-tagbar { display: none; }
  .hero-scroll { display: none; }
  .hero-title-en { font-size: 3rem; }
  .hero-desc { font-size: .9rem; }
  .hero-indicators { bottom: 1.5rem; }

  /* Biz */
  .biz-cards { max-width: 100%; }

  /* Strengths */
  .str-grid { grid-template-columns: 1fr; border-radius: var(--radius); }
  .str-item { border-right: none; border-bottom: 1px solid var(--c-gray-100); }
  .str-item:last-child { border-bottom: none; }

  /* CTA */
  .cta-inner { flex-direction: column; text-align: center; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom-inner { flex-direction: column; gap: .75rem; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .about-stats { flex-direction: column; gap: 1rem; }
  .about-stat-divider { width: 100%; height: 1px; margin: 0; }
  .hero-title-en { font-size: 2.5rem; }
  .lang-switcher { display: none; }
}