:root {
  --museum-bg: #08090c;
  --museum-wall: #0e1015;
  --museum-panel: #151821;
  --museum-mat: #0b0d12;
  --gold-accent: #e89b3c;
  --gold-soft: #f5dfb8;
  --teal-accent: #6e928d;
  --text-main: #f7f4ee;
  --text-sub: #b9b3a8;
  --text-dim: #73706a;
  --border-gold: rgba(232, 155, 60, 0.42);
  --border-subtle: rgba(245, 223, 184, 0.14);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
  background-color: var(--museum-bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   미술관 천장 스포트라이트 & 공간 배경 연출
   ========================================================= */
.museum-ambience {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(245, 223, 184, 0.08), transparent 70%),
    linear-gradient(180deg, #0b0d12 0%, #07080b 65%, #050608 100%);
}

.spotlight-cone {
  position: absolute;
  top: -120px;
  width: 580px;
  height: 780px;
  background: conic-gradient(
    from 180deg at 50% 0%,
    transparent 158deg,
    rgba(245, 223, 184, 0.09) 174deg,
    rgba(232, 155, 60, 0.16) 180deg,
    rgba(245, 223, 184, 0.09) 186deg,
    transparent 202deg
  );
  filter: blur(26px);
  transform-origin: 50% 0%;
  transition: transform 0.7s var(--ease-out-expo), opacity 0.7s ease;
}

.spotlight-center {
  left: calc(50% - 290px);
  opacity: 1;
}

.spotlight-left {
  left: calc(20% - 290px);
  opacity: 0.42;
  transform: rotate(-12deg);
}

.spotlight-right {
  left: calc(80% - 290px);
  opacity: 0.42;
  transform: rotate(12deg);
}

.wall-watermark {
  position: absolute;
  top: 26%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(3.2rem, 8.5vw, 8.5rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.022);
  user-select: none;
}

/* =========================================================
   상단 미술관 헤더
   ========================================================= */
.museum-header {
  position: relative;
  z-index: 20;
  max-width: 1400px;
  margin: 0 auto;
  padding: 22px 32px 12px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.exhibition-ticket {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(232, 155, 60, 0.12);
  border: 1px solid rgba(232, 155, 60, 0.35);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold-soft);
  margin-bottom: 8px;
}

.ticket-hall {
  color: var(--gold-accent);
}

.ticket-divider {
  opacity: 0.35;
}

.exhibition-title {
  font-size: clamp(1.4rem, 2.4vw, 2.05rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.exhibition-title .accent-text {
  color: var(--gold-soft);
  border-bottom: 2px solid var(--gold-accent);
  padding-bottom: 2px;
}

.exhibition-subtitle {
  font-size: 0.86rem;
  color: var(--text-sub);
  margin-top: 4px;
}

.museum-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.view-mode-group {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 3px;
}

.btn-museum {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: rgba(20, 23, 31, 0.78);
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.view-mode-group .btn-museum {
  border: none;
  background: transparent;
  padding: 6px 13px;
  color: var(--text-sub);
}

.view-mode-group .btn-museum.is-selected {
  background: var(--gold-accent);
  color: #111;
  font-weight: 700;
}

.btn-museum:hover {
  border-color: var(--gold-accent);
  color: var(--gold-soft);
}

.view-mode-group .btn-museum.is-selected:hover {
  color: #111;
}

.btn-gold {
  border-color: rgba(232, 155, 60, 0.5);
  background: linear-gradient(135deg, rgba(232, 155, 60, 0.22), rgba(232, 155, 60, 0.08));
  color: var(--gold-soft);
}

.btn-upload {
  border-color: rgba(110, 146, 141, 0.45);
  background: rgba(110, 146, 141, 0.14);
}

.tour-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: all 0.25s ease;
}

.tour-dot.is-active {
  background: var(--gold-accent);
  box-shadow: 0 0 10px var(--gold-accent);
}

/* =========================================================
   3D 미술관 메인 스테이지 & 스탠딩 패널
   ========================================================= */
.museum-main {
  position: relative;
  z-index: 10;
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 28px 48px;
}

.stage-3d-viewport {
  position: relative;
  width: 100%;
  height: 610px;
  perspective: 1650px;
  perspective-origin: 50% 46%;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(245, 223, 184, 0.12);
  background:
    radial-gradient(circle at 50% 25%, rgba(232, 155, 60, 0.12), transparent 55%),
    linear-gradient(180deg, rgba(16, 19, 26, 0.7) 0%, rgba(9, 11, 15, 0.95) 68%, #06070a 100%);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.75);
  user-select: none;
  touch-action: pan-y;
  cursor: grab;
}

.stage-3d-viewport.is-dragging {
  cursor: grabbing;
}

/* 상단 안내 배지 */
.interaction-guide {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 25;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  pointer-events: none;
}

.guide-pill {
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(10, 12, 16, 0.78);
  border: 1px solid rgba(245, 223, 184, 0.16);
  font-size: 0.75rem;
  color: var(--text-sub);
  backdrop-filter: blur(8px);
}

.guide-pill strong {
  color: var(--gold-accent);
  margin-right: 4px;
  letter-spacing: 0.06em;
}

/* 3D 씬 컨테이너 */
.stage-3d-scene {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 개별 3D 스탠딩 패널 */
.panel-3d {
  position: absolute;
  width: 340px;
  height: 465px;
  top: 52px;
  left: calc(50% - 170px);
  transform-style: preserve-3d;
  transition:
    transform 0.72s var(--ease-out-expo),
    filter 0.72s var(--ease-out-expo),
    opacity 0.72s var(--ease-out-expo);
  will-change: transform, filter;
  cursor: pointer;
}

.stage-3d-viewport.is-dragging .panel-3d {
  transition: none;
}

/* 패널 본체 (직립 전시 가벽/모놀리스 프레임) */
.panel-monolith {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 14px;
  background: linear-gradient(165deg, #202431 0%, #12151d 55%, #0c0e14 100%);
  border: 1px solid rgba(245, 223, 184, 0.22);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow:
    0 26px 50px rgba(0, 0, 0, 0.8),
    inset 0 1px 1px rgba(255, 255, 255, 0.15);
  transform-style: preserve-3d;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

/* 3D 입체 패널 좌/우 두께면 (스택 회전 시 입체감 부여) */
.panel-monolith::before,
.panel-monolith::after {
  content: "";
  position: absolute;
  top: 2px;
  bottom: 2px;
  width: 14px;
  background: linear-gradient(180deg, #2c3140, #10131a);
  border-top: 1px solid rgba(245, 223, 184, 0.2);
  border-bottom: 1px solid rgba(0, 0, 0, 0.8);
}

.panel-monolith::before {
  left: 0;
  transform-origin: left center;
  transform: rotateY(-90deg);
}

.panel-monolith::after {
  right: 0;
  transform-origin: right center;
  transform: rotateY(90deg);
}

/* 선택되어 강조된 중앙 패널 스타일 */
.panel-3d.is-selected .panel-monolith {
  border-color: var(--gold-accent);
  box-shadow:
    0 30px 70px rgba(0, 0, 0, 0.9),
    0 0 38px rgba(232, 155, 60, 0.28),
    inset 0 0 0 1px rgba(232, 155, 60, 0.45);
}

/* 스택에 놓인 비선택 패널 호버 효과 */
.panel-3d:not(.is-selected):hover .panel-monolith {
  border-color: rgba(245, 223, 184, 0.55);
}

/* 패널 상단 미술관 넘버링 바 */
.panel-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
  padding: 0 2px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.panel-exhibit-no {
  color: var(--gold-accent);
  font-family: "SF Mono", "Menlo", monospace;
}

.panel-status-pill {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-sub);
  font-size: 0.63rem;
}

.panel-3d.is-selected .panel-status-pill {
  background: var(--gold-accent);
  color: #111;
  font-weight: 800;
}

/* 패널 내부 작품 액자 프레임 */
.panel-art-window {
  position: relative;
  flex: 1;
  margin: 10px 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--museum-mat);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 24px rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-art-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s var(--ease-out-expo);
  pointer-events: none;
}

.panel-3d.is-selected:hover .panel-art-img {
  transform: scale(1.04);
}

/* 패널 위 확대/선택 안내 오버레이 배지 */
.panel-action-hint {
  position: absolute;
  bottom: 10px;
  right: 10px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(8, 10, 14, 0.84);
  border: 1px solid rgba(232, 155, 60, 0.45);
  color: var(--gold-soft);
  font-size: 0.68rem;
  font-weight: 700;
  backdrop-filter: blur(6px);
  opacity: 0;
  transform: translateY(4px);
  transition: all 0.25s ease;
}

.panel-3d.is-selected .panel-action-hint,
.panel-3d:hover .panel-action-hint {
  opacity: 1;
  transform: translateY(0);
}

/* 패널 하단 광고 카피 명패 (Placard) */
.panel-placard {
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.panel-ad-kicker {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold-accent);
  text-transform: uppercase;
}

.panel-ad-title {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-ad-sub {
  font-size: 0.74rem;
  color: var(--text-sub);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 스탠딩 패널 바닥 반사광 & 그림자 */
.panel-reflection {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  height: 110px;
  border-radius: 14px;
  overflow: hidden;
  transform: scaleY(-1);
  opacity: 0.22;
  filter: blur(4px);
  pointer-events: none;
  mask-image: linear-gradient(to bottom, transparent 25%, rgba(0, 0, 0, 0.85) 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 25%, rgba(0, 0, 0, 0.85) 100%);
}

.panel-reflection img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.panel-floor-shadow {
  position: absolute;
  top: calc(100% - 6px);
  left: 8%;
  right: 8%;
  height: 24px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.92) 0%, transparent 75%);
  filter: blur(6px);
  pointer-events: none;
}

/* 미술관 바닥면 연출 */
.museum-floor {
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: -140px;
  height: 320px;
  transform: rotateX(76deg);
  transform-origin: 50% 0%;
  pointer-events: none;
  z-index: 1;
}

.floor-spotlight-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 35%, rgba(232, 155, 60, 0.22), transparent 55%);
}

.floor-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 75%);
}

/* 좌우 화살표 버튼 */
.hall-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 1px solid rgba(245, 223, 184, 0.24);
  background: rgba(11, 13, 18, 0.8);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.hall-nav:hover {
  background: var(--gold-accent);
  color: #111;
  border-color: var(--gold-accent);
  transform: translateY(-50%) scale(1.08);
}

.hall-prev {
  left: 18px;
}

.hall-next {
  right: 18px;
}

/* =========================================================
   하단 썸네일 네비게이터 & 퍼스널 광고 캠페인 보드
   ========================================================= */
.exhibit-navigator {
  margin-top: 16px;
  display: flex;
  justify-content: center;
}

.exhibit-thumbnails {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 6px 12px;
  border-radius: 16px;
  background: rgba(17, 20, 27, 0.72);
  border: 1px solid var(--border-subtle);
}

.exhibit-thumb-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 12px 6px 6px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-sub);
  cursor: pointer;
  transition: all 0.25s ease;
}

.exhibit-thumb-btn img {
  width: 36px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
}

.exhibit-thumb-btn .thumb-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.exhibit-thumb-btn .thumb-no {
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--gold-accent);
  letter-spacing: 0.08em;
}

.exhibit-thumb-btn .thumb-name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-main);
  max-width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.exhibit-thumb-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.exhibit-thumb-btn.is-selected {
  border-color: var(--gold-accent);
  background: rgba(232, 155, 60, 0.15);
  box-shadow: 0 4px 16px rgba(232, 155, 60, 0.22);
}

/* 퍼스널 광고 캠페인 상세 보드 */
.ad-campaign-board {
  margin-top: 20px;
  padding: 28px 32px;
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(22, 26, 35, 0.9), rgba(13, 15, 21, 0.95));
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 32px;
  align-items: center;
}

.board-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.badge-exhibit {
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--gold-accent);
}

.badge-campaign {
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(232, 155, 60, 0.14);
  border: 1px solid rgba(232, 155, 60, 0.35);
  color: var(--gold-soft);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.badge-path {
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.74rem;
  color: var(--teal-accent);
  background: rgba(110, 146, 141, 0.12);
  padding: 2px 8px;
  border-radius: 4px;
}

.board-headline {
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.board-slogan {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--gold-soft);
  border-left: 3px solid var(--gold-accent);
  padding-left: 12px;
  margin-bottom: 12px;
}

.board-copy {
  font-size: 0.94rem;
  color: var(--text-sub);
  line-height: 1.72;
  word-break: keep-all;
}

.board-right {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  padding-left: 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.metrics-heading {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--gold-accent);
  margin-bottom: 10px;
}

.metrics-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.metric-card {
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.metric-label {
  display: block;
  font-size: 0.66rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  font-weight: 700;
}

.metric-val {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold-soft);
}

.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.kw-tag {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(110, 146, 141, 0.14);
  border: 1px solid rgba(110, 146, 141, 0.32);
  color: #cfe3df;
  font-size: 0.75rem;
}

.btn-enlarge-poster {
  width: 100%;
  padding: 13px 18px;
  border-radius: 12px;
  border: 1px solid var(--gold-accent);
  background: linear-gradient(135deg, var(--gold-accent), #cf7a1d);
  color: #111;
  font-size: 0.88rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-enlarge-poster:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(232, 155, 60, 0.35);
}

/* =========================================================
   전체화면 라이트박스 & 광고 포스터 모달
   ========================================================= */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.32s ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 6, 9, 0.93);
  backdrop-filter: blur(16px);
}

.lightbox-dialog {
  position: relative;
  z-index: 5;
  width: min(1180px, 95vw);
  max-height: 90vh;
  border-radius: 22px;
  background: #11141c;
  border: 1px solid rgba(232, 155, 60, 0.35);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.9);
  padding: 28px;
  overflow-y: auto;
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 20px;
  z-index: 10;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-close:hover {
  background: var(--gold-accent);
  color: #111;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: rgba(9, 11, 15, 0.82);
  color: var(--text-main);
  font-size: 1.1rem;
  cursor: pointer;
}

.lightbox-nav:hover {
  background: var(--gold-accent);
  color: #111;
}

.lightbox-prev {
  left: 14px;
}

.lightbox-next {
  right: 14px;
}

.lightbox-body {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 32px;
  align-items: center;
}

.lightbox-art-frame {
  background: #07080b;
  border-radius: 14px;
  border: 1px solid rgba(245, 223, 184, 0.2);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 78vh;
}

.lightbox-art-frame img {
  max-width: 100%;
  max-height: 74vh;
  object-fit: contain;
  border-radius: 8px;
}

.lightbox-ad-sheet {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-right: 16px;
}

.sheet-label {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(232, 155, 60, 0.16);
  color: var(--gold-accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.sheet-title {
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 800;
  color: var(--text-main);
}

.sheet-slogan {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--gold-soft);
  border-left: 3px solid var(--gold-accent);
  padding-left: 12px;
}

.sheet-desc {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.75;
}

.sheet-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 6px;
}

.sheet-footer {
  margin-top: 10px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sheet-path-label {
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  font-weight: 700;
}

.sheet-footer code {
  font-family: "SF Mono", "Menlo", monospace;
  color: var(--gold-accent);
  font-size: 0.85rem;
}

/* 반응형 대응 */
@media (max-width: 960px) {
  .ad-campaign-board {
    grid-template-columns: 1fr;
  }

  .board-right {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 18px;
  }

  .lightbox-body {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .museum-header {
    padding: 16px 16px 12px;
  }

  .museum-main {
    padding: 8px 12px 36px;
  }

  .stage-3d-viewport {
    height: 510px;
  }

  .panel-3d {
    width: 268px;
    height: 380px;
    left: calc(50% - 134px);
    top: 64px;
  }
}