/* ============================================================
   디자인 토큰 — 색상, 타이포그래피, 간격
   (다크 테마 기본값 / light 테마는 body.light-mode 로 전환)
============================================================ */
:root {
  /* 배경 계열 */
  --bg:        #0B1A1E;   /* 메인 배경 — 딥 틸 블랙 */
  --bg-alt:    #0F2126;   /* 교차 섹션 배경 */
  --bg-warm:   #120D08;   /* 따뜻한 어두운 갈색 배경 */
  --bg-card:   #111D24;   /* 카드 배경 */
  --bg-glass:  rgba(15,33,38,0.85); /* 반투명 카드 */

  /* 텍스트 계열 */
  --text:      #E4CFA7;   /* 메인 텍스트 — 따뜻한 크림 */
  --text-sub:  #9A8A72;   /* 보조 텍스트 — 뮤트 탄 */
  --text-muted:#52453A;   /* 흐린 텍스트 */
  --text-on-gold: #0B1A1E;

  /* 포인트 색상 */
  --gold:      #C9A455;   /* 골드 액센트 */
  --gold-dim:  #8A6E35;   /* 어두운 골드 */
  --ember:     #C45228;   /* 앰버/오렌지 — 로고 점, CTA */
  --steel:     #5A9BAA;   /* 스틸 틸 — 섹션 넘버 */
  --steel-dim: #2E5A66;

  /* 보더 */
  --border:    rgba(201,164,85,0.12);
  --border-md: rgba(201,164,85,0.28);
  --border-lg: rgba(201,164,85,0.45);

  /* 타이포그래피 */
  --font-display: 'Cormorant Garamond', 'Noto Sans KR', Georgia, serif;
  --font-body:    'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;

  /* 간격 스케일 */
  --sp-xs:  0.5rem;
  --sp-sm:  1rem;
  --sp-md:  2rem;
  --sp-lg:  4rem;
  --sp-xl:  7rem;

  /* 레이아웃 */
  --max-w:  1100px;
  --radius: 6px;

  /* 트랜지션 */
  --ease:   cubic-bezier(0.4, 0, 0.2, 1);
}

/* 라이트 모드 토큰 재정의 (body.light-mode 클래스로 활성화) */
body.light-mode {
  --bg:        #F2EDE3;
  --bg-alt:    #E8E0D0;
  --bg-warm:   #F5EFE4;
  --bg-card:   #FFFFFF;
  --bg-glass:  rgba(242,237,227,0.92);
  --text:      #1A1008;
  --text-sub:  #5A4A38;
  --text-muted:#B0A090;
  --gold:      #9A7428;
  --gold-dim:  #C9A455;
  --ember:     #B03C18;
  --steel:     #2A6070;
  --steel-dim: #5A9BAA;
  --border:    rgba(154,116,40,0.15);
  --border-md: rgba(154,116,40,0.30);
  --border-lg: rgba(154,116,40,0.50);
}

/* ============================================================
   기본 리셋 & 전역 스타일
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* 타이포그래피 헬퍼 */
.font-display { font-family: var(--font-display); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  text-wrap: balance;
}

/* 레이아웃 컨테이너 */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-md);
}

/* 섹션 공통 패딩 */
.section { padding: var(--sp-xl) 0; }
.section-alt { background: var(--bg-alt); }
.section-warm { background: var(--bg-warm); }

/* 섹션 넘버 + 라벨 (상단 eyebrow) */
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
}
.section-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--steel);
}
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.section-rule {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* 섹션 타이틀 */
.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  color: var(--text);
  margin-bottom: var(--sp-sm);
}
.section-title em {
  font-style: italic;
  color: var(--gold);
}
.section-title strong {
  font-weight: 600;
}

/* 구분선 */
.divider {
  width: 40px;
  height: 1px;
  background: var(--gold-dim);
  margin: var(--sp-md) 0;
}

/* 골드 강조 텍스트 */
.accent-gold { color: var(--gold); }
.accent-ember { color: var(--ember); }
.accent-steel { color: var(--steel); }

/* 언어 전환 — .kr 기본 표시, .en 숨김 */
.en { display: none; }
body.lang-en .kr { display: none; }
body.lang-en .en { display: revert; }

/* ============================================================
   내비게이션 바
============================================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.25rem var(--sp-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s;
}
/* 스크롤 시 반투명 배경 추가 (JS로 .scrolled 클래스 추가) */
#navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

/* 로고 영역 */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-logo svg { width: 36px; height: 44px; }
.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text);
}

/* 데스크탑 네비게이션 링크 */
.nav-links {
  display: flex;
  gap: var(--sp-md);
}
.nav-links a {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-sub);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--gold); }

/* 네비게이션 우측 컨트롤 (언어 + 테마 토글) */
.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

/* 언어 토글 버튼 */
.lang-toggle {
  display: flex;
  border: 1px solid var(--border-md);
  border-radius: 999px;
  overflow: hidden;
}
.lang-btn {
  padding: 0.3rem 0.85rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-sub);
  transition: background 0.2s, color 0.2s;
}
.lang-btn.active {
  background: var(--gold);
  color: var(--text-on-gold);
  font-weight: 700;
}

/* 테마 토글 버튼 */
.theme-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-md);
  color: var(--text-sub);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.theme-btn:hover { border-color: var(--gold); color: var(--gold); }

/* 모바일 햄버거 */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: transform 0.3s;
}

/* 모바일 메뉴 드로어 */
#nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-md);
}
#nav-drawer.open { display: flex; }
#nav-drawer a {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--text-sub);
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
#nav-drawer a:hover { color: var(--gold); }
.drawer-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-size: 1.5rem;
  color: var(--text-sub);
  padding: 0.5rem;
}

/* ============================================================
   히어로 섹션 — 전체 화면 배경 이미지
============================================================ */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  padding-bottom: var(--sp-xl);
  overflow: hidden;
}

/* 히어로 배경 이미지 */
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/19-31.png');
  background-size: cover;
  background-position: top center;
  transform: scale(1.05);
  transition: transform 8s var(--ease);
}
#hero.loaded .hero-bg { transform: scale(1); }

/* 히어로 그라디언트 오버레이 */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(11,26,30,0.35) 0%,
    rgba(11,26,30,0.55) 60%,
    rgba(11,26,30,0.95) 100%
  );
}

/* 히어로 콘텐츠 */
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
}
.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--sp-sm);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 300;
  line-height: 1.05;
  margin-bottom: var(--sp-md);
}
.hero-title em {
  font-style: italic;
  color: var(--gold);
}
.hero-sub {
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: var(--text-sub);
  max-width: 480px;
  line-height: 1.9;
  margin-bottom: var(--sp-lg);
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: background 0.3s, color 0.3s;
}
.hero-cta:hover {
  background: var(--gold);
  color: var(--text-on-gold);
}
.hero-cta svg { width: 12px; height: 12px; }

/* 히어로 스크롤 인디케이터 */
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-sub);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(0.6); }
}

/* ============================================================
   어바웃 섹션 — 스튜디오 스토리
============================================================ */
#about { padding: var(--sp-xl) 0; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg) var(--sp-xl);
  align-items: start;
}
.about-block { }
.about-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.15;
  margin-bottom: var(--sp-md);
}
.about-body {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 2;
}
.about-body p + p { margin-top: 1em; }
.about-body strong { color: var(--text); font-weight: 500; }
.about-body em { color: var(--gold); font-style: normal; }

/* ============================================================
   아카리 체인 섹션 — UA Bock 251 시그니처 체인
============================================================ */
#signature-chain { padding: var(--sp-xl) 0; background: var(--bg-warm); }

.chain-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  align-items: center;
}
.chain-img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
}
.chain-img-wrap img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  object-position: center;
  transition: transform 0.6s var(--ease);
}
.chain-img-wrap:hover img { transform: scale(1.03); }

.chain-tag {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--border-md);
  display: inline-block;
  padding: 0.3rem 0.75rem;
  margin-bottom: var(--sp-md);
}
.chain-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.05;
  margin-bottom: var(--sp-sm);
}
.chain-sub {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: var(--sp-md);
}

/* 시그널 체인 플로우 다이어그램 */
.chain-flow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: var(--sp-md);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--border);
}
.chain-node {
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  padding: 0.4rem 0.8rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  white-space: nowrap;
}
.chain-arrow {
  color: var(--gold-dim);
  font-size: 0.7rem;
}

/* ============================================================
   아티스트 섹션 — U87 Ai 사용 아티스트
============================================================ */
#artists { padding: var(--sp-xl) 0; }

.artists-image-wrap {
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  margin-top: var(--sp-lg);
}
.artists-image-wrap img {
  width: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.artists-image-wrap:hover img { transform: scale(1.02); }

.artists-names {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.3;
  margin: var(--sp-md) 0;
}
.artists-sub {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 600px;
}
.artists-cta-text {
  margin-top: var(--sp-md);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--gold);
}

/* ============================================================
   U87 Ai 섹션 — 마이크 스펙 카드
============================================================ */
#u87 { padding: var(--sp-xl) 0; background: var(--bg-alt); }

.u87-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  align-items: center;
}
.u87-img-wrap img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius);
}
.u87-spec-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--sp-sm);
  margin: var(--sp-md) 0;
}
.spec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.2rem 1rem;
  text-align: center;
}
.spec-card-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.spec-card-sub {
  font-size: 0.7rem;
  color: var(--text-sub);
}
.u87-vs {
  margin-top: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.u87-vs-title {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 0.5rem;
}
.u87-vs li {
  font-size: 0.85rem;
  color: var(--text-sub);
  padding: 0.25rem 0;
  padding-left: 1rem;
  position: relative;
}
.u87-vs li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold-dim);
}

/* ============================================================
   모니터링 섹션 — Amphion Two18 + Billboard 엔지니어
============================================================ */
#monitoring { padding: var(--sp-xl) 0; background: var(--bg-warm); }

.monitoring-header {
  text-align: center;
  margin-bottom: var(--sp-lg);
}
.monitoring-model {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: var(--sp-sm);
}
.billboard-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border-md);
  padding: 0.4rem 1rem;
  margin: var(--sp-md) auto;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--text-sub);
}
.engineers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
}
.engineer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--sp-md);
}
.engineer-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
}
.engineer-artists {
  font-size: 0.75rem;
  color: var(--text-sub);
  letter-spacing: 0.05em;
}

/* ============================================================
   스튜디오 인프라 섹션
============================================================ */
#infra { padding: var(--sp-xl) 0; }

.infra-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-style: italic;
  font-weight: 300;
  text-align: center;
  margin-bottom: var(--sp-sm);
}
.infra-headline strong { font-style: normal; font-weight: 600; color: var(--gold); }
.infra-tagline {
  text-align: center;
  color: var(--text-sub);
  font-size: 0.9rem;
  margin-bottom: var(--sp-lg);
}
.infra-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-sm);
}
.infra-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--sp-md);
}
.infra-icon {
  font-size: 1.5rem;
  margin-bottom: var(--sp-sm);
}
.infra-card-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--sp-xs);
  color: var(--text);
}
.infra-card-body {
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ============================================================
   애트머스피어 + 갤러리 섹션
============================================================ */
#atmosphere { padding: var(--sp-xl) 0; background: var(--bg-alt); }

.atm-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  align-items: center;
  margin-bottom: var(--sp-xl);
}
.atm-img-wrap img {
  width: 100%;
  height: 560px;
  object-fit: cover;
  border-radius: var(--radius);
}
.atm-investment {
  margin-top: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  border-left: 2px solid var(--gold);
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.atm-investment strong { color: var(--gold); }
.atm-materials {
  margin-top: var(--sp-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* 갤러리 그리드 (조명 분위기 사진들) */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.gallery-cell {
  overflow: hidden;
  aspect-ratio: 4/3;
}
.gallery-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.gallery-cell:hover img { transform: scale(1.06); }
/* 갤러리 분위기 사진 — 단일 이미지에서 6분할 표현 */
.gallery-cell-full {
  grid-column: 1 / -1;
  overflow: hidden;
  aspect-ratio: 16/7;
}
.gallery-cell-full img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.gallery-cell-full:hover img { transform: scale(1.03); }

/* ============================================================
   장비 리스트 섹션
============================================================ */
#gear { padding: var(--sp-xl) 0; }

.gear-categories {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
}
.gear-category { }
.gear-cat-title {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--steel);
  border-bottom: 1px solid var(--border-md);
  padding-bottom: 0.5rem;
  margin-bottom: var(--sp-sm);
}
.gear-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-sm);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}
.gear-row:last-child { border-bottom: none; }
.gear-item-name {
  font-size: 0.85rem;
  color: var(--text);
}
.gear-item-note {
  font-size: 0.7rem;
  color: var(--text-sub);
  display: block;
}
.gear-item-price {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-sub);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   요금 섹션 — 이벤트 요금 카드 (Standard / Signature)
============================================================ */
#pricing { padding: var(--sp-xl) 0; background: var(--bg-warm); }

.pricing-event-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--ember);
  color: #fff;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  padding: 0.35rem 1rem;
  margin-bottom: var(--sp-md);
}
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}
.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
}
.price-card-head {
  background: var(--bg-alt);
  padding: var(--sp-md);
  border-bottom: 1px solid var(--border);
}
.price-card-tier {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 0.3rem;
}
.price-card-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
}
.price-card-body { padding: var(--sp-md); }
.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  gap: var(--sp-sm);
}
.price-row:last-child { border-bottom: none; }
.price-row-label { font-size: 0.88rem; }
.price-row-sub { font-size: 0.72rem; color: var(--text-sub); }
.price-row-amount {
  text-align: right;
}
.price-original {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-decoration: line-through;
  display: block;
}
.price-current {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--gold);
  white-space: nowrap;
}
.price-current.free { color: var(--ember); }
.price-badge {
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.4rem;
  border-radius: 2px;
  vertical-align: middle;
  margin-left: 0.3rem;
}
.price-badge.discount { background: var(--ember); color: #fff; }
.price-badge.free-tag { background: var(--steel); color: #fff; }
.price-footnote {
  font-size: 0.72rem;
  color: var(--text-sub);
  margin-top: var(--sp-sm);
  padding: var(--sp-sm);
  border-top: 1px solid var(--border);
  line-height: 1.8;
}

/* ============================================================
   다회차 세션 패키지 섹션
============================================================ */
#packages { padding: var(--sp-xl) 0; background: var(--bg-alt); }

.pkg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}
.pkg-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.pkg-card-head {
  padding: var(--sp-md);
  border-bottom: 1px solid var(--border);
}
.pkg-letter {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--border-lg);
  float: right;
}
.pkg-chain-label {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 0.3rem;
}
.pkg-chain-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
}
.pkg-sessions {
  padding: var(--sp-sm) var(--sp-md);
}
.pkg-session-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}
.pkg-session-row:last-child { border-bottom: none; }
.pkg-session-label { font-size: 0.82rem; font-weight: 500; }
.pkg-session-per { font-size: 0.7rem; color: var(--text-sub); }
.pkg-session-price {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   커버곡 + 믹싱/마스터링 요금 섹션
============================================================ */
#cover-pricing { padding: var(--sp-xl) 0; }

.cover-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}
.cover-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--sp-md);
}
.cover-card.featured {
  border-color: var(--gold-dim);
  position: relative;
}
.cover-card.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--gold), var(--ember));
}
.cover-card-title {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: var(--sp-sm);
}
.cover-card-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: var(--sp-xs);
}
.cover-card-desc {
  font-size: 0.78rem;
  color: var(--text-sub);
  margin-bottom: var(--sp-md);
  line-height: 1.7;
}
.cover-price-big {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--gold);
}
.cover-price-big span { font-size: 1rem; color: var(--text-muted); text-decoration: line-through; }
.cover-items {
  margin-top: var(--sp-sm);
}
.cover-item-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}
.cover-item-row:last-child { border-bottom: none; }
.cover-item-price {
  font-family: var(--font-display);
  color: var(--text-sub);
}
.cover-item-note {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
}

/* ============================================================
   이벤트 섹션 — 리뷰 할인 이벤트
============================================================ */
#event { padding: var(--sp-xl) 0; background: var(--bg-warm); }

.event-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
  position: relative;
}
.event-steps::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: calc(33.33% - 30px);
  right: calc(33.33% - 30px);
  height: 1px;
  background: var(--border-md);
}
.event-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--sp-md);
  text-align: center;
  position: relative;
}
.step-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--border-md);
  line-height: 1;
  margin-bottom: var(--sp-sm);
}
.step-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--sp-xs);
}
.step-desc {
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.event-discount-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ember);
  margin-bottom: var(--sp-sm);
}
.event-notice {
  margin-top: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.9;
}

/* ============================================================
   고객 후기 섹션 — 리뷰 카드 (익명 처리)
============================================================ */
#reviews { padding: var(--sp-xl) 0; background: var(--bg-alt); }

.reviews-carousel {
  overflow: hidden;
  margin-top: var(--sp-lg);
  cursor: grab;
}
.reviews-carousel:active { cursor: grabbing; }
.reviews-track {
  display: flex;
  gap: var(--sp-md);
  width: max-content;
  will-change: transform;
}
.reviews-track.scrolling {
  animation-name: reviews-scroll;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
@keyframes reviews-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-sm);
  margin-top: var(--sp-lg);
}
.reviews-track .review-card.reveal {
  opacity: 1;
  transform: none;
  transition: none;
}
.review-card {
  flex: 0 0 340px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
/* 익명 아바타 — 흐리게 처리 */
.review-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--border-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-sub);
  filter: blur(3px);
  flex-shrink: 0;
}
.review-meta { }
/* 익명 처리된 사용자명 */
.review-username {
  font-size: 0.78rem;
  font-weight: 700;
  filter: blur(4px);
  user-select: none;
  color: var(--text);
  display: block;
}
.review-date {
  font-size: 0.68rem;
  color: var(--text-muted);
}
.review-stars {
  color: var(--gold);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}
.review-text {
  font-size: 0.82rem;
  color: var(--text-sub);
  line-height: 1.85;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 7;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   공지 / 예약 안내 섹션
============================================================ */
#notice { padding: var(--sp-xl) 0; }

.notice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
}

/* 예약 프로세스 스텝 */
.booking-steps { }
.booking-step {
  display: flex;
  gap: var(--sp-md);
  margin-bottom: var(--sp-md);
  padding-bottom: var(--sp-md);
  border-bottom: 1px solid var(--border);
}
.booking-step:last-child { border-bottom: none; }
.step-circle {
  width: 36px; height: 36px;
  border: 1px solid var(--gold-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--gold);
  flex-shrink: 0;
}
.booking-step-content { }
.booking-step-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}
.booking-step-body {
  font-size: 0.8rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.booking-step-body li {
  padding: 0.15rem 0;
  padding-left: 1em;
  position: relative;
}
.booking-step-body li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--gold-dim);
}

/* 정책/규정 */
.policy-block {
  margin-bottom: var(--sp-md);
}
.policy-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.policy-list {
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.85;
}
.policy-list li {
  padding: 0.2rem 0;
  padding-left: 1em;
  position: relative;
}
.policy-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--gold-dim);
}
.policy-list strong { color: var(--text); font-weight: 600; }

/* 취소 규정 표 */
.cancel-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.78rem;
}
.cancel-table th, .cancel-table td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  text-align: left;
}
.cancel-table th {
  background: var(--bg-alt);
  color: var(--text-sub);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}
.cancel-table td { color: var(--text-sub); }

/* ============================================================
   FAQ 섹션 — 아코디언
============================================================ */
#faq { padding: var(--sp-xl) 0; background: var(--bg-alt); }

.faq-list { margin-top: var(--sp-lg); }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-md);
  padding: 1.2rem 0;
  text-align: left;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--gold); }
.faq-q-mark {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold);
  flex-shrink: 0;
}
.faq-q-text { flex: 1; }
.faq-icon {
  font-size: 1rem;
  color: var(--text-sub);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease);
}
/* 열린 상태 */
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-question { color: var(--gold); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}
.faq-answer-inner {
  padding: 0 0 1.2rem 1.8rem;
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.9;
}
.faq-answer-inner strong { color: var(--text); font-weight: 600; }

/* ============================================================
   연락처 / 위치 섹션
============================================================ */
#contact { padding: var(--sp-xl) 0; }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
  align-items: start;
}
.contact-address {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: var(--sp-md);
}
.contact-address strong { font-weight: 600; }
.contact-parking {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--steel);
  border: 1px solid var(--steel-dim);
  padding: 0.3rem 0.75rem;
  margin-bottom: var(--sp-lg);
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem var(--sp-md);
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s;
}
.contact-link:hover {
  border-color: var(--gold);
  background: var(--bg-card);
}
.contact-link-icon {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border: 1px solid var(--border-md);
  border-radius: 50%;
  flex-shrink: 0;
}
.contact-link-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sub);
  display: block;
}
.contact-link-value {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

/* 지도 자리 표시 (향후 임베드) */
.map-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  border-radius: var(--radius);
  overflow: hidden;
}
.map-placeholder iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================================
   푸터
============================================================ */
footer {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
  padding: var(--sp-lg) 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
}
.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer-copy {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: var(--sp-md);
}
.footer-links a {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }

/* ============================================================
   스크롤 리빌 애니메이션 — JS로 .reveal 클래스 추가
============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
/* 지연 단계별 딜레이 */
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }

/* 모션 줄이기 환경설정 존중 */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg { transform: none !important; transition: none; }
  .scroll-line { animation: none; }
}

/* ============================================================
   반응형 — 태블릿 (900px 이하)
============================================================ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .about-grid,
  .chain-layout,
  .u87-layout,
  .atm-layout,
  .contact-layout,
  .notice-grid { grid-template-columns: 1fr; }

  .engineers-grid { grid-template-columns: 1fr; }
  .infra-cards { grid-template-columns: 1fr 1fr; }
  .pricing-grid,
  .pkg-grid { grid-template-columns: 1fr; }
  .cover-grid { grid-template-columns: 1fr; }
  .review-card { flex: 0 0 300px; }
  .event-steps { grid-template-columns: 1fr; }
  .event-steps::before { display: none; }
  .gear-categories { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   반응형 — 모바일 (600px 이하)
============================================================ */
@media (max-width: 600px) {
  :root {
    --sp-xl: 4.5rem;
    --sp-lg: 2.5rem;
  }
  .infra-cards { grid-template-columns: 1fr; }
  .u87-spec-cards { grid-template-columns: 1fr; }
  .review-card { flex: 0 0 260px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}