:root {
  --bg: #f6f1ea;
  --surface: #fffdf9;
  --surface-strong: #ffffff;
  --surface-dark: #1d1a17;
  --text: #251d17;
  --text-soft: #645748;
  --text-inverse: #f9f4ed;
  --line: rgba(52, 34, 20, 0.1);
  --line-strong: rgba(255, 255, 255, 0.14);
  --accent: #e67721;
  --accent-deep: #b75410;
  --accent-soft: #ffe6cf;
  --shadow: 0 18px 60px rgba(47, 25, 7, 0.08);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Noto Sans SC", "Noto Sans JP", "Hiragino Sans", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(230, 119, 33, 0.12), transparent 28%),
    linear-gradient(180deg, #fff9f2 0%, var(--bg) 42%, #f7f3ed 100%);
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section-light {
  background: rgba(255, 255, 255, 0.48);
  backdrop-filter: blur(8px);
}

.section-dark {
  background: linear-gradient(180deg, #221b15 0%, #191510 100%);
  color: var(--text-inverse);
}

.lang {
  display: none;
}

body[data-lang="zh"] .lang-zh,
body[data-lang="ja"] .lang-ja {
  display: block;
}

body[data-lang="zh"] .lang-zh.inline,
body[data-lang="ja"] .lang-ja.inline {
  display: inline;
}

.single-copy {
  max-width: 62ch;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(255, 250, 244, 0.78);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.98rem;
}

.brand small {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: white;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 10px 25px rgba(182, 84, 16, 0.28);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--accent-deep);
}

.main-nav a .lang {
  display: none;
}

body[data-lang="zh"] .main-nav a .lang-zh,
body[data-lang="ja"] .main-nav a .lang-ja {
  display: inline;
}

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

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.nav-arrow {
  font-size: 0.72em;
  transition: transform 200ms ease;
}

.nav-dropdown:hover .nav-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
}

.nav-dropdown-menu::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  background: var(--surface-strong);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  rotate: 45deg;
  z-index: 1;
}

.nav-dropdown-menu a {
  display: block;
  white-space: nowrap;
  padding: 10px 20px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-top: none;
  font-size: 0.88rem;
  transition: background 120ms ease, color 120ms ease;
}

.nav-dropdown-menu a:first-child {
  border-top: 1px solid var(--line);
  border-radius: 12px 12px 0 0;
}

.nav-dropdown-menu a:last-child {
  border-radius: 0 0 12px 12px;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(182, 84, 16, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(47, 25, 7, 0.06);
}

.lang-toggle-icon {
  font-size: 1rem;
  color: var(--accent-deep);
}

.hero {
  padding-top: 70px;
}

.hero-grid,
.about-grid,
.import-layout,
.footer-grid,
.trust-grid,
.summary-grid,
.partner-grid,
.cta-band-inner,
.feature-split {
  display: grid;
  gap: 28px;
}

.hero-grid {
  grid-template-columns: 1.15fr 0.95fr;
  align-items: center;
}

.eyebrow,
.section-kicker,
.card-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
  font-weight: 700;
}

.eyebrow::before,
.section-kicker::before,
.card-label::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.hero h1,
.section-head h2,
.cta-band h2,
.site-footer h2,
.feature-copy h3,
.import-card h3,
.partner-card h3 {
  margin: 0;
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.7rem, 5vw, 5.2rem);
  margin-top: 18px;
}

.hero h1 .lang,
.section-head h2 .lang,
.cta-band h2 .lang,
.feature-copy h3 .lang,
.import-card h3 .lang,
.partner-card h3 .lang {
  display: none;
}

body[data-lang="zh"] .hero h1 .lang-zh,
body[data-lang="ja"] .hero h1 .lang-ja,
body[data-lang="zh"] .section-head h2 .lang-zh,
body[data-lang="ja"] .section-head h2 .lang-ja,
body[data-lang="zh"] .cta-band h2 .lang-zh,
body[data-lang="ja"] .cta-band h2 .lang-ja,
body[data-lang="zh"] .feature-copy h3 .lang-zh,
body[data-lang="ja"] .feature-copy h3 .lang-ja,
body[data-lang="zh"] .import-card h3 .lang-zh,
body[data-lang="ja"] .import-card h3 .lang-ja,
body[data-lang="zh"] .partner-card h3 .lang-zh,
body[data-lang="ja"] .partner-card h3 .lang-ja {
  display: block;
}

@media (min-width: 641px) {
  body[data-lang="ja"] .feature-copy h3 .lang-ja {
    font-size: 0.84em;
    white-space: nowrap;
  }
}

.lead,
.section-intro {
  margin-top: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-microproof {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.proof-pill {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  min-width: 170px;
  border-radius: 18px;
  border: 1px solid rgba(182, 84, 16, 0.14);
  background: rgba(255, 255, 255, 0.72);
}

.proof-pill strong {
  font-size: 1rem;
}

.proof-pill .lang {
  display: none;
  color: var(--text-soft);
  font-size: 0.92rem;
}

body[data-lang="zh"] .proof-pill .lang-zh,
body[data-lang="ja"] .proof-pill .lang-ja {
  display: block;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button .lang {
  display: none;
}

body[data-lang="zh"] .button .lang-zh,
body[data-lang="ja"] .button .lang-ja {
  display: inline;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: white;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  box-shadow: 0 16px 35px rgba(182, 84, 16, 0.28);
}

.button-secondary {
  border: 1px solid rgba(182, 84, 16, 0.22);
  background: rgba(255, 255, 255, 0.72);
}

.hero-highlights {
  list-style: none;
  padding: 0;
  margin: 30px 0 0;
  display: grid;
  gap: 12px;
}

.hero-highlights li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-soft);
}

.hero-highlights li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.hero-highlights li .lang {
  display: none;
}

body[data-lang="zh"] .hero-highlights li .lang-zh,
body[data-lang="ja"] .hero-highlights li .lang-ja {
  display: inline;
}

.card-surface {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-media {
  overflow: hidden;
}

.hero-media img {
  aspect-ratio: 1.08 / 1;
  object-fit: cover;
}

.media-caption {
  padding: 22px 24px 26px;
  display: grid;
  gap: 6px;
}

.media-caption strong {
  font-size: 1rem;
}

.media-caption span {
  color: var(--text-soft);
  font-size: 0.93rem;
}

.trust-strip {
  padding: 20px 0 0;
}

.trust-grid {
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 16px 18px;
}

.trust-grid div {
  padding: 14px 16px;
}

.trust-grid strong,
.trust-grid span {
  display: block;
}

.trust-grid strong {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.trust-grid span {
  margin-top: 6px;
  font-weight: 700;
}

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 34px;
}

.section-head h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.section-head.narrow {
  max-width: 760px;
}

.light-head .section-kicker,
.light-head .card-label {
  color: #ffbb7c;
}

.light-head .section-kicker::before,
.light-head .card-label::before {
  background: currentColor;
}

.about-grid {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: stretch;
}

.about-points {
  list-style: none;
  margin: 0;
  padding: 0;
  flex-direction: column;
  height: 100%;
}

.about-points li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  flex: 1;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.about-points li:first-child {
  padding-top: 0;
}

.about-points li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.about-icon {
  font-size: 1.3rem;
  line-height: 1;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
  padding-top: 2px;
}

.about-points li div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.about-points li strong {
  font-size: 0.88rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.about-points li span:not(.about-icon) {
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.55;
}

body[data-lang="zh"] .about-points.lang-zh,
body[data-lang="ja"] .about-points.lang-ja {
  display: flex;
}

body[data-lang="zh"] .info-list.lang-zh,
body[data-lang="ja"] .info-list.lang-ja {
  display: flex;
}

.lang-card {
  display: flex;
  flex-direction: column;
}

.lang-card,
.info-card,
.summary-card,
.partner-card,
.import-card,
.proof-card {
  padding: 30px;
}

.info-list {
  margin: 0;
  gap: 0;
  flex-direction: column;
  height: 100%;
}

.about-grid .info-card {
  display: flex;
  flex-direction: column;
}

.about-grid .info-list div {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.info-list div {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.info-list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.info-list dt {
  font-size: 0.88rem;
  color: var(--text-soft);
  margin-bottom: 6px;
}

.info-list dd {
  margin: 0;
  font-weight: 600;
}

.summary-grid,
.partner-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.summary-grid {
  align-items: stretch;
}

.partner-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* Business overview 3-card grid */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.biz-card {
  display: block;
  padding: 30px;
  text-decoration: none;
  color: inherit;
  transition: transform 180ms ease, box-shadow 180ms ease;
  position: relative;
  overflow: hidden;
}

.biz-card:hover,
.biz-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 24px 70px rgba(47, 25, 7, 0.12);
}

.biz-card h3 {
  margin-top: 18px;
  font-size: 1.55rem;
  line-height: 1.14;
  letter-spacing: -0.03em;
}

.biz-card h3 .lang {
  display: none;
}

body[data-lang="zh"] .biz-card h3 .lang-zh,
body[data-lang="ja"] .biz-card h3 .lang-ja {
  display: block;
}

.biz-card p {
  margin: 14px 0 0;
  color: var(--text-soft);
}

.accent-top {
  position: relative;
  overflow: hidden;
}

.accent-top::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, #ffb06f 100%);
}

.summary-card h3,
.partner-card h3 {
  margin-top: 18px;
  font-size: 1.55rem;
}

.primary-summary {
  background: linear-gradient(180deg, rgba(255, 248, 240, 1) 0%, rgba(255, 255, 255, 1) 100%);
}

.summary-points {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
}

.summary-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}

.summary-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.summary-points li .lang {
  display: none;
}

body[data-lang="zh"] .summary-points li .lang-zh,
body[data-lang="ja"] .summary-points li .lang-ja {
  display: inline;
}

.summary-points.compact {
  margin-top: 16px;
}

.summary-card p,
.partner-card p {
  margin: 14px 0 0;
  color: var(--text-soft);
}

.feature-block {
  margin-top: 28px;
  padding: 32px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
}

.feature-split {
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
}

.feature-split.reverse {
  grid-template-columns: 1.05fr 0.95fr;
}

.feature-split.reverse .feature-copy {
  order: 2;
}

.feature-split.reverse .feature-media {
  order: 1;
}

.feature-copy h3 {
  margin-top: 16px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.feature-media img,
.proof-card img {
  border-radius: 18px;
  object-fit: cover;
}

.framed-media figure {
  margin: 0;
  padding: 10px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.section-light .framed-media figure,
.contact-panel .contact-card {
  background: rgba(255, 255, 255, 0.88);
}

.dual-media {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 16px;
}

.dual-media img {
  height: 100%;
  min-height: 250px;
}

.media-grid {
  display: grid;
  gap: 16px;
}

.three-up {
  grid-template-columns: repeat(6, 1fr);
}

.three-up img:nth-child(1),
.three-up img:nth-child(2),
.three-up img:nth-child(3) {
  grid-column: span 2;
  aspect-ratio: 1.25 / 1;
}

.three-up img:nth-child(4),
.three-up img:nth-child(5) {
  grid-column: span 3;
  aspect-ratio: 1.5 / 1;
}

.short-grid {
  grid-template-columns: repeat(3, 1fr);
}

.short-grid img:nth-child(1),
.short-grid img:nth-child(2),
.short-grid img:nth-child(3) {
  grid-column: span 1;
  aspect-ratio: 1.2 / 1;
}

.single-spotlight img {
  max-width: 420px;
  margin-left: auto;
  background: white;
}

.last-export-block {
  align-items: center;
}

.import-layout {
  grid-template-columns: 1.08fr 0.92fr;
  align-items: start;
}

.import-card {
  margin-top: 24px;
}

.import-card h3 {
  font-size: 2rem;
}

.materials-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.materials-list li {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-weight: 600;
}

.proof-card {
  position: sticky;
  top: 110px;
}

.proof-card img {
  max-height: 560px;
  object-fit: contain;
  background: #fff;
}

.proof-card div {
  margin-top: 18px;
}

.proof-card p {
  margin: 8px 0 0;
  color: var(--text-soft);
}

.contact-panel {
  padding-top: 10px;
}

.contact-panel-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.contact-card {
  padding: 24px;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.contact-card strong {
  display: block;
  margin-bottom: 12px;
}

.contact-card strong .lang {
  display: none;
}

body[data-lang="zh"] .contact-card strong .lang-zh,
body[data-lang="ja"] .contact-card strong .lang-ja {
  display: block;
}

.contact-card a,
.contact-card span {
  display: block;
  font-weight: 600;
}

.contact-card a {
  color: var(--accent-deep);
}

.contact-card.wide {
  grid-column: span 2;
}

.cta-band {
  padding-top: 30px;
}

.cta-band-inner {
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 34px;
  background: linear-gradient(135deg, rgba(255, 233, 211, 0.96) 0%, rgba(255, 249, 241, 0.98) 100%);
}

.compact-copy {
  margin-top: 14px;
}

.site-footer {
  padding: 34px 0 56px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  grid-template-columns: 1.1fr 1fr 0.9fr;
  align-items: start;
}

.site-footer p,
.site-footer strong {
  margin: 0;
}

.site-footer strong {
  display: block;
  margin-bottom: 10px;
}

.site-footer a {
  color: var(--accent-deep);
}

.site-footer strong .lang {
  display: none;
}

body[data-lang="zh"] .site-footer strong .lang-zh,
body[data-lang="ja"] .site-footer strong .lang-ja {
  display: inline;
}

@media (max-width: 1080px) {
  .hero-grid,
  .about-grid,
  .import-layout,
  .contact-panel-grid,
  .feature-split,
  .feature-split.reverse,
  .cta-band-inner,
  .footer-grid,
  .partner-grid {
    grid-template-columns: 1fr;
  }

  .feature-split.reverse .feature-copy,
  .feature-split.reverse .feature-media {
    order: initial;
  }

  .proof-card {
    position: static;
  }

  .single-spotlight img {
    margin-left: 0;
  }
}

@media (max-width: 860px) {
  .header-inner {
    padding: 14px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .main-nav {
    gap: 12px;
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    padding-top: 0;
    opacity: 1;
    pointer-events: auto;
    display: flex;
    gap: 12px;
    margin-top: 4px;
  }

  .nav-dropdown-menu::before {
    display: none;
  }

  .nav-dropdown-menu a {
    display: inline;
    padding: 0;
    background: none;
    border: none;
    font-size: 0.92rem;
  }

  .nav-dropdown-menu a:first-child {
    border: none;
    border-radius: 0;
  }

  .nav-dropdown-menu a:last-child {
    border-radius: 0;
  }

  .nav-dropdown-menu a:hover {
    background: none;
  }

  .nav-arrow {
    display: none;
  }

  .nav-dropdown-trigger {
    font-weight: 700;
    color: var(--text);
  }

  .trust-grid,
  .summary-grid,
  .partner-grid,
  .materials-list,
  .contact-cards {
    grid-template-columns: 1fr;
  }

  .contact-card.wide {
    grid-column: span 1;
  }

  .three-up,
  .short-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .three-up img:nth-child(1),
  .three-up img:nth-child(2),
  .three-up img:nth-child(3),
  .three-up img:nth-child(4),
  .three-up img:nth-child(5),
  .short-grid img:nth-child(1),
  .short-grid img:nth-child(2),
  .short-grid img:nth-child(3) {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .container {
    width: min(100% - 24px, 1180px);
  }

  .hero {
    padding-top: 42px;
  }

  .lang-card,
  .info-card,
  .summary-card,
  .partner-card,
  .import-card,
  .proof-card,
  .feature-block,
  .cta-band-inner {
    padding: 22px;
  }

  .button,
  .lang-toggle {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-microproof {
    flex-direction: column;
  }
}

/* ── Sub-section titles & galleries ── */

.engineering-sub,
.env-gallery-section {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--line-strong);
}

.env-gallery-section {
  border-top-color: var(--line);
}

.sub-head {
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
}

.sub-title {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.sub-title .lang {
  display: none;
}

body[data-lang="zh"] .sub-title .lang-zh,
body[data-lang="ja"] .sub-title .lang-ja {
  display: block;
}

.drill-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.drill-gallery figure {
  margin: 0;
  padding: 8px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.drill-gallery img {
  border-radius: 12px;
  aspect-ratio: 1.15 / 1;
  object-fit: cover;
}

.drill-gallery figure:first-child {
  grid-column: span 2;
}

.drill-gallery figure:nth-child(2) {
  grid-column: span 2;
}

.env-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.env-gallery figure {
  margin: 0;
  padding: 10px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
}

.env-gallery img {
  border-radius: 14px;
  aspect-ratio: 1.2 / 1;
  object-fit: cover;
}

/* ── Product Catalog ── */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.product-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card-media {
  margin: 0;
  padding: 24px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--line);
}

.product-card-media img {
  max-height: 300px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.product-card-body {
  padding: 24px 28px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  color: var(--text);
}

.product-card-body h3 {
  margin: 12px 0 0;
  font-size: 1.3rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.product-card-body h3 .lang {
  display: none;
}

body[data-lang="zh"] .product-card-body h3 .lang-zh,
body[data-lang="ja"] .product-card-body h3 .lang-ja {
  display: block;
}

.product-card-body > p {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

.product-specs {
  margin: auto 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  margin-top: 18px;
}

.product-specs div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 5px 0;
}

.product-specs dt {
  font-size: 0.86rem;
  color: var(--text-soft);
}

.product-specs dd {
  margin: 0;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
}

/* ── 櫻岳 Section ── */

.ougaku-layout {
  display: grid;
  grid-template-columns: 0.42fr 0.58fr;
  gap: 28px;
  align-items: start;
}

.ougaku-media {
  overflow: hidden;
  position: sticky;
  top: 110px;
}

.ougaku-media img {
  object-fit: contain;
  background: #fff;
}

.ougaku-details {
  display: grid;
  gap: 18px;
}

.water-indicators {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.water-indicator {
  padding: 22px 20px;
  text-align: center;
  border-radius: var(--radius-md);
}

.water-indicator strong {
  display: block;
  font-size: 1.35rem;
  color: var(--accent-deep);
  letter-spacing: -0.02em;
}

.water-indicator span {
  display: none;
  margin-top: 8px;
  font-size: 0.84rem;
  color: var(--text-soft);
  line-height: 1.4;
}

body[data-lang="zh"] .water-indicator .lang-zh,
body[data-lang="ja"] .water-indicator .lang-ja {
  display: block;
}

.water-scenes {
  padding: 26px 28px;
  border-radius: var(--radius-lg);
}

.water-scenes h3 {
  margin: 0 0 18px;
  font-size: 1.15rem;
}

.water-scenes h3 .lang {
  display: none;
}

body[data-lang="zh"] .water-scenes h3 .lang-zh,
body[data-lang="ja"] .water-scenes h3 .lang-ja {
  display: block;
}

.water-uses {
  display: grid;
  gap: 16px;
}

.water-uses div {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.water-uses div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.water-uses strong {
  font-size: 0.95rem;
  color: var(--text);
}

.water-uses p {
  margin: 6px 0 0;
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.6;
}

.water-nutrition {
  margin: 18px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--text-soft);
  font-weight: 600;
}

.water-source {
  padding: 24px 28px;
  border-radius: var(--radius-lg);
}

.water-source h3 {
  margin: 0 0 12px;
  font-size: 1.15rem;
  color: var(--accent-deep);
}

.water-source h3 .lang {
  display: none;
}

body[data-lang="zh"] .water-source h3 .lang-zh,
body[data-lang="ja"] .water-source h3 .lang-ja {
  display: block;
}

.water-source p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.7;
}

.water-indicator small {
  display: none;
  margin-top: 6px;
  font-size: 0.76rem;
  color: #999;
  line-height: 1.4;
  font-weight: 400;
}

body[data-lang="zh"] .water-indicator small.lang-zh,
body[data-lang="ja"] .water-indicator small.lang-ja {
  display: block;
}

.water-nutrition-table {
  padding: 24px 28px;
  border-radius: var(--radius-lg);
}

.water-nutrition-table h3 {
  margin: 0 0 16px;
  font-size: 1.05rem;
}

.water-nutrition-table h3 .lang {
  display: none;
}

body[data-lang="zh"] .water-nutrition-table h3 .lang-zh,
body[data-lang="ja"] .water-nutrition-table h3 .lang-ja {
  display: block;
}

.water-nutrition-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.water-nutrition-table td {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.water-nutrition-table tr:last-child td {
  border-bottom: 0;
}

.water-nutrition-table td:first-child {
  color: var(--text-soft);
}

.water-nutrition-table td:last-child {
  text-align: right;
  font-weight: 700;
  color: var(--text);
}

/* ── Responsive: new sections ── */

@media (max-width: 1080px) {
  .biz-grid {
    grid-template-columns: 1fr;
  }

  .ougaku-layout {
    grid-template-columns: 1fr;
  }

  .ougaku-media {
    position: static;
    max-width: 400px;
  }

  .drill-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .drill-gallery figure:first-child,
  .drill-gallery figure:nth-child(2) {
    grid-column: span 1;
  }
}

@media (max-width: 860px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .water-indicators {
    grid-template-columns: 1fr 1fr;
  }

  .env-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .product-card-body {
    padding: 20px 22px 22px;
  }

  .water-indicators {
    grid-template-columns: 1fr;
  }

  .water-scenes {
    padding: 20px 22px;
  }

  .biz-card {
    padding: 22px;
  }

  .drill-gallery {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
}