:root {
  --bg: #060606;
  --fg: #ffffff;
  --accent: #53c3cf;
  --muted: #b7c5c8;
  --border: rgba(83, 195, 207, 0.35);
  --panel: linear-gradient(180deg, rgba(83, 195, 207, 0.08), rgba(83, 195, 207, 0.02));
  --panel-soft: rgba(83, 195, 207, 0.04);
  --maxw: 1160px;
  --chip: rgba(83, 195, 207, 0.1);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at 0% 0%, rgba(83, 195, 207, 0.09), transparent 0 24%),
    radial-gradient(circle at 100% 0%, rgba(83, 195, 207, 0.05), transparent 0 18%),
    linear-gradient(180deg, #050505 0%, #060606 100%);
  color: var(--fg);
  font-family: "Outfit", system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 84px;
}

.topbar,
.brand,
.langbar,
.head,
.backrow,
.gallery,
.cta,
.meta-strip {
  display: flex;
  gap: 12px;
}

.topbar,
.backrow {
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.topbar {
  margin-bottom: 18px;
}

.brand {
  align-items: center;
}

.brand img {
  height: 56px;
  width: auto;
}

.ttl {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ttl strong {
  color: var(--accent);
  font-size: 16px;
}

.ttl span {
  color: var(--muted);
  font-size: 13px;
}

.langbar {
  align-items: center;
}

.langbtn {
  border: 1px solid var(--border);
  background: rgba(83, 195, 207, 0.06);
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.langbtn:hover {
  border-color: var(--accent);
  color: var(--fg);
}

.langbtn.active {
  border-color: var(--accent);
  color: var(--bg);
  background: var(--accent);
}

.detail-intro {
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.intro-text {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.hero {
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--panel);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.gallery {
  position: relative;
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 0;
  border-bottom: 1px solid var(--border);
}

.mainimg {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  background: #0c0c0c;
}

.mainimg::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(180deg, transparent, rgba(6, 6, 6, 0.72));
  pointer-events: none;
}

.mainimg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-count {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(6, 6, 6, 0.68);
  color: #f2f8f9;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.thumbs {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
  border-left: 1px solid var(--border);
}

.thumb {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.thumb:last-child {
  border-bottom: 0;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.88;
  transform: scale(1.02);
  transition: 0.18s;
}

.thumb:hover img {
  opacity: 1;
  transform: scale(1.05);
}

.thumb.active::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid var(--accent);
  pointer-events: none;
}

.content {
  padding: 24px;
}

.head {
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
}

.head h1 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.sub {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.price {
  margin: 0;
  font-weight: 800;
  font-size: 28px;
  letter-spacing: -0.04em;
}

.price span {
  color: var(--accent);
}

.meta {
  color: var(--muted);
  font-size: 13px;
}

.specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.chip {
  border: 1px solid rgba(83, 195, 207, 0.2);
  background: var(--chip);
  color: var(--muted);
  font-size: 13px;
  padding: 7px 11px;
  border-radius: 999px;
}

.grid2 {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  margin-top: 22px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel-soft);
  padding: 18px;
}

.panel h2 {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 19px;
}

.panel p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.inquiry-panel {
  position: sticky;
  top: 18px;
}

.meta-strip {
  flex-wrap: wrap;
  margin-top: 16px;
}

.meta-card {
  flex: 1 1 140px;
  min-width: 120px;
  border: 1px solid rgba(83, 195, 207, 0.16);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  padding: 12px 14px;
}

.meta-card strong {
  display: block;
  color: var(--fg);
  font-size: 13px;
}

.meta-card span {
  color: var(--muted);
  font-size: 12px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table td {
  padding: 10px 8px;
  border-top: 1px solid rgba(83, 195, 207, 0.18);
  color: var(--muted);
}

.table td:first-child {
  color: var(--fg);
  width: 42%;
}

.cta {
  flex-wrap: wrap;
  margin-top: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--accent);
  border-radius: 12px;
  color: var(--accent);
  font-weight: 600;
  transition: 0.2s;
  white-space: nowrap;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.btn.secondary {
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--fg);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--fg);
}

.backrow {
  margin-top: 18px;
}

.i18n {
  display: none;
}

.i18n.show {
  display: inline;
}

@media (max-width: 920px) {
  .gallery {
    grid-template-columns: 1fr;
  }

  .mainimg {
    min-height: 360px;
  }

  .thumbs {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: unset;
    border-left: 0;
    border-top: 1px solid var(--border);
  }

  .thumb {
    border-bottom: 0;
    border-right: 1px solid var(--border);
  }

  .thumb:last-child {
    border-right: 0;
  }

  .grid2 {
    grid-template-columns: 1fr;
  }

  .inquiry-panel {
    position: static;
  }
}

@media (max-width: 560px) {
  .wrap {
    padding: 22px 16px 72px;
  }

  .brand .ttl span {
    display: none;
  }

  .content {
    padding: 18px;
  }
}