:root {
  --bg: #07090c;
  --surface: #10151b;
  --surface-2: #171f25;
  --text: #f7f5ec;
  --muted: #b7b5aa;
  --line: rgba(236,221,170,.15);
  --accent: #d5b35c;
  --accent-2: #5bd7a4;
  --shadow: 0 24px 70px rgba(0,0,0,.42);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.lang-toggle {
  min-width: 44px;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface);
  font: inherit;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-logo {
  width: auto;
  height: 36px;
  max-width: 160px;
  object-fit: contain;
  display: block;
}

.brand-name {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2vw, 30px);
  color: var(--muted);
  font-size: 15px;
}

.nav a:hover { color: var(--text); }

main > section {
  padding: clamp(56px, 8vw, 112px) clamp(18px, 5vw, 72px);
}

.hero {
  position: relative;
  min-height: calc(100svh - 118px);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--bg);
}

.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.2s ease, transform 1.8s ease;
  will-change: opacity, transform;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border: 1.5px solid rgba(255,255,255,.45);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background .35s, border-color .35s, transform .25s;
}

.hero-dot:hover {
  border-color: var(--accent);
  transform: scale(1.25);
}

.hero-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.15);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(circle at 74% 48%, rgba(213,179,92,.12), transparent 30%),
    linear-gradient(90deg, rgba(0,0,0,.16), rgba(0,0,0,.32) 42%, rgba(0,0,0,.76) 100%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(600px, 52vw);
  color: #fff;
  padding: 40px 36px 40px 34px;
  border-left: 3px solid var(--accent);
  background: rgba(5, 7, 9, .62);
  box-shadow: var(--shadow);
  margin-right: clamp(18px, 5vw, 72px);
}

.eyebrow, .section-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 18px;
  max-width: 760px;
  font-size: clamp(36px, 4.5vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}
h2 {
  margin-bottom: 20px;
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}
h3 {
  margin-bottom: 10px;
  font-size: clamp(17px, 1.6vw, 23px);
  line-height: 1.25;
  letter-spacing: 0;
}
.lead {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(16px, 1.4vw, 20px);
}

.hero .lead {
  margin-bottom: 10px;
  color: rgba(255,255,255,.9);
  font-size: clamp(18px, 1.8vw, 25px);
}

.hero-line {
  color: rgba(255,255,255,.64);
  font-size: 16px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.primary-btn, .ghost-btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 800;
}

.primary-btn {
  background: var(--accent);
  color: #07090c;
  box-shadow: var(--shadow);
}

.ghost-btn {
  border: 1px solid var(--line);
  color: var(--text);
}

.about {
  text-align: center;
  padding-top: clamp(72px, 8vw, 120px);
  padding-bottom: clamp(72px, 8vw, 120px);
}
.about .section-kicker { margin-bottom: 16px; }
.about h2 {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.about-desc {
  max-width: 640px;
  margin: 20px auto 56px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.about-stats {
  display: flex;
  justify-content: center;
  gap: clamp(48px, 10vw, 104px);
  flex-wrap: wrap;
}
.about-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 120px;
}
.about-stat-num {
  font-size: 68px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.01em;
}
.about-stat-num small {
  font-size: 32px;
  font-weight: 700;
  vertical-align: baseline;
  opacity: .85;
}
.about-stat-label {
  font-size: 16px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.solution-grid, .case-grid, .expert-list, .platform-grid, .enzyme-flow {
  display: grid;
  gap: 16px;
}

.solution-grid article,
.expert-list article,
.case-grid article,
.platform-grid article,
.enzyme-flow article,
.product-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.data-band {
  display: grid;
  grid-template-columns: .9fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  background: var(--surface-2);
}

.data-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
}

.data-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.data-list li {
  min-height: 132px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.data-list strong {
  display: block;
  color: var(--accent);
  font-size: 42px;
  line-height: 1;
}

.data-list .unit {
  font-size: 20px;
  color: var(--accent);
  font-weight: 700;
  margin-left: 2px;
}

.data-list span { color: var(--muted); font-size: 16px; }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  overflow: hidden;
  padding: 20px;
  transition: transform .2s ease, border-color .2s ease;
}

.product-card:hover,
.solution-grid article:hover,
.case-grid article:hover,
.platform-grid article:hover,
.enzyme-flow article:hover,
.expert-list article:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.product-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 10px;
  background: #fff;
}

.product-card img.contain-image {
  object-fit: contain;
  padding: 18px;
  background: var(--surface-2);
}

.tag {
  display: inline-flex;
  margin: 18px 0 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
}

dl { margin: 18px 0 0; }
dt { color: var(--accent); font-weight: 900; }
dd { margin: 4px 0 0; color: var(--muted); }

.experts {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--surface-2) 86%, transparent), transparent),
    var(--bg);
}

.platform {
  background: var(--surface-2);
}

.platform-intro {
  max-width: 920px;
  margin: -6px 0 32px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

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

.platform-grid article {
  min-height: 360px;
  padding: 26px;
}

.platform-index,
.enzyme-flow span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
  font-family: 'Cormorant Garamond', serif;
}

.platform-grid ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.platform-grid li {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.enzyme {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  background:
    radial-gradient(circle at 18% 20%, rgba(91,215,164,.08), transparent 28%),
    var(--bg);
}

.enzyme-copy p:not(.section-kicker) {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.enzyme-flow {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.enzyme-flow article {
  min-height: 300px;
  padding: 22px;
}

.enzyme-flow span {
  font-size: 34px;
}

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

.expert-list article {
  min-height: 280px;
  padding: 24px;
}

.expert-list span {
  display: block;
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 68px;
  font-weight: 900;
  line-height: 1;
}

.expert-avatar {
  width: 100%;
  max-width: 140px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--accent);
  margin-bottom: 18px;
  background: var(--surface-2);
}

.solution-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.solution-grid article {
  min-height: 210px;
  padding: 24px;
}

.solution-grid p, .product-card p, .case-grid p, .expert-list p, .platform-grid p, .enzyme-flow p {
  color: var(--muted);
}

.cases {
  background: var(--surface-2);
}

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

.case-grid article {
  overflow: hidden;
}

.case-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.case-grid h3, .case-grid p {
  padding-left: 22px;
  padding-right: 22px;
}
.case-grid h3 { padding-top: 22px; }
.case-grid p { padding-bottom: 20px; }

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(48px, 6vw, 80px) clamp(18px, 5vw, 72px);
  max-width: 1440px;
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  object-position: left;
  opacity: 0.9;
}

.footer-tagline {
  color: var(--accent);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin: 0;
}

.footer-contact h3 {
  font-size: 20px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact-role {
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.contact-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.contact-phone {
  font-size: 17px;
  color: var(--accent);
  font-weight: 700;
  transition: opacity 0.2s;
}

.contact-phone:hover {
  opacity: 0.8;
}

.contact-address {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.5;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px clamp(18px, 5vw, 72px);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* ── Hero Stats ─────────────────────────────────────────── */
.hero-stats {
  position: absolute;
  left: clamp(18px, 5vw, 72px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 18px 22px;
  background: rgba(7, 9, 12, 0.78);
  border: 1px solid rgba(213,179,92,.22);
  border-left: 3px solid var(--accent);
  backdrop-filter: blur(14px);
  border-radius: var(--radius);
  min-width: 172px;
  animation: fadeSlideIn .55s ease both;
}

.hero-stat:nth-child(2) { animation-delay: .12s; }
.hero-stat:nth-child(3) { animation-delay: .24s; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.hero-stat-num {
  font-size: 44px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  font-family: 'Cormorant Garamond', serif;
  letter-spacing: -0.01em;
}

.hero-stat-sup {
  font-size: 24px;
  vertical-align: super;
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(247,245,236,.65);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ── Data Section ───────────────────────────────────────── */
.data-intro {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 0;
  line-height: 1.7;
}

.data-num-row {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin-bottom: 4px;
}

.data-image-badge {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid rgba(213,179,92,.3);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Partner Logos ──────────────────────────────────────── */
.partner-logos {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.partner-label {
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 12px;
}

.partner-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.partner-list li {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted);
  background: var(--surface);
  transition: border-color .2s, color .2s;
}

.partner-list li:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  color: var(--text);
}

/* ── Experts section copy ───────────────────────────────── */
.expert-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: 1fr;
  }
  .nav { justify-content: flex-start; overflow-x: auto; }
  .header-actions { justify-content: flex-start; width: 100%; }
  .data-band, .experts, .enzyme {
    grid-template-columns: 1fr;
  }
  .product-grid, .expert-list, .case-grid, .contact-list, .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .solution-grid, .enzyme-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .hero {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-end;
    min-height: auto;
    padding: 0;
  }
  .hero-stats {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 20px clamp(18px, 5vw, 72px) 0;
    order: 0;
  }
  .hero-stat {
    min-width: 0;
    flex: 1;
    text-align: center;
    padding: 14px 16px;
  }
  .hero-copy {
    width: 100%;
    max-width: 100%;
    margin: 0;
    border-left: none;
    border-bottom: 3px solid var(--accent);
    margin-top: 120px;
    order: 1;
  }
}

@media (max-width: 680px) {
  .brand-logo {
    height: 32px;
    max-width: 140px;
  }
  main > section {
    padding-left: 16px;
    padding-right: 16px;
  }
  /* ── Mobile Hero ── */
  .hero {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    min-height: auto;
    padding: 0;
  }
  .hero-carousel {
    position: relative;
    width: 100%;
    height: 260px;
  }
  .hero-slide {
    transform: none;
  }
  .hero-slide.active {
    transform: none;
  }
  .hero-dots {
    bottom: 14px;
  }
  .hero::after {
    background: linear-gradient(0deg, rgba(7,9,12,1) 0%, rgba(7,9,12,.8) 20%, rgba(7,9,12,.3) 60%, rgba(7,9,12,.05) 100%);
    top: 60px;
  }
  .hero-stats {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    flex-direction: row;
    justify-content: center;
    gap: 6px;
    padding: 0 12px;
    margin-top: -40px;
    z-index: 3;
  }
  .hero-stat {
    min-width: 0;
    flex: 1;
    max-width: 120px;
    text-align: center;
    padding: 10px 8px;
    border-radius: 6px;
    border-left: 2px solid var(--accent);
    background: rgba(7,9,12,.92);
  }
  .hero-stat-num {
    font-size: 22px;
  }
  .hero-stat-sup {
    font-size: 16px;
  }
  .hero-stat-label {
    font-size: 10px;
    white-space: nowrap;
  }
  .hero-copy {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 24px 16px 40px;
    border-left: none;
    border-bottom: 3px solid var(--accent);
    order: 1;
    background: var(--bg);
  }
  .hero .lead {
    font-size: 16px;
  }
  .hero-line {
    font-size: 14px;
  }
  .hero-actions {
    flex-direction: column;
    gap: 10px;
  }
  .hero-actions a {
    width: 100%;
    justify-content: center;
  }
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
  .lead { font-size: 16px; }
  .data-list, .product-grid, .expert-list, .solution-grid, .case-grid, .contact-list, .platform-grid, .enzyme-flow {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    padding: 40px 16px;
  }
  /* ── Mobile Nav ── */
  .nav {
    gap: 11px;
    font-size: 14px;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }
  .site-header {
    padding: 10px 14px;
    gap: 10px;
  }
  /* ── Mobile About ── */
  .about-stats {
    gap: 24px;
  }
  .about-stat-num {
    font-size: 42px;
  }
  .about-stat-num small {
    font-size: 24px;
  }
  .about-stat-label {
    font-size: 14px;
  }
  /* ── Mobile Sections ── */
  .about-desc {
    font-size: 15px;
    margin-bottom: 36px;
  }
  .data-list strong {
    font-size: 32px;
  }
  .data-list .unit {
    font-size: 17px;
  }
  .data-list span {
    font-size: 14px;
  }
  .contact-item {
    padding: 16px;
  }
  .contact-name {
    font-size: 18px;
  }
  .contact-phone {
    font-size: 15px;
  }
}