:root {
  --ink: #14243f;
  --muted: #5c6878;
  --line: #dfe6ee;
  --panel: #f6f8fb;
  --blue: #1559d6;
  --blue-strong: #0b4a9e;
  --teal: #11a7a1;
  --teal-bright: #11a7a1;
  --gold: #c8922b;
  --navy: #071426;
  --navy-soft: #0b1d35;
  --white: #ffffff;
  --shadow: 0 22px 64px rgba(20, 36, 63, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Inter, Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

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

.wrap {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(7, 20, 38, 0.38);
  backdrop-filter: blur(18px);
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled,
.site-header.menu-active {
  border-color: rgba(20, 36, 63, 0.1);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 14px 42px rgba(20, 36, 63, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  width: min(1180px, calc(100% - 40px));
  min-height: 78px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.96rem;
  font-weight: 700;
}

.nav-links a {
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a:hover {
  color: var(--teal-bright);
}

.site-header.is-scrolled .nav-links,
.site-header.menu-active .nav-links {
  color: #334155;
}

.site-header.is-scrolled .nav-links a:hover,
.site-header.menu-active .nav-links a:hover {
  color: var(--blue);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 800;
  line-height: 1.15;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.nav-cta,
.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 18px 38px rgba(21, 89, 214, 0.2);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.button:hover,
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 46px rgba(21, 89, 214, 0.26);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  place-items: center;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px 0;
  border-radius: 999px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: min(760px, 100vh);
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 20, 38, 0.94) 0%, rgba(7, 20, 38, 0.74) 44%, rgba(7, 20, 38, 0.28) 100%),
    linear-gradient(180deg, rgba(7, 20, 38, 0.1), rgba(7, 20, 38, 0.74)),
    url("images/advanced-cell-production.jpg") center / cover no-repeat;
  transform: scale(1.02);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 64px;
  align-items: end;
  width: min(1180px, calc(100% - 40px));
  min-height: min(760px, 100vh);
  margin: 0 auto;
  padding: 132px 0 80px;
}

.hero-copy {
  max-width: 790px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-bright);
  font-size: 0.92rem;
  font-weight: 850;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 6.7vw, 6.65rem);
  line-height: 0.98;
  font-weight: 900;
}

h2 {
  color: var(--ink);
  font-size: clamp(2rem, 3.8vw, 4.35rem);
  line-height: 1.08;
  font-weight: 900;
}

h3 {
  color: var(--ink);
  font-size: 1.32rem;
  line-height: 1.24;
  font-weight: 850;
}

.hero-lead {
  max-width: 720px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1.08rem, 1.6vw, 1.28rem);
}

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

.hero-dashboard {
  align-self: end;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(7, 20, 38, 0.7);
  backdrop-filter: blur(20px);
  box-shadow: 0 28px 84px rgba(0, 0, 0, 0.26);
}

.hero-dashboard > div:first-child {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-dashboard span,
.card-topline span,
.contact-method span,
.value-panel span {
  display: block;
  color: var(--teal-bright);
  font-size: 0.82rem;
  font-weight: 850;
}

.hero-dashboard strong {
  display: block;
  margin-top: 5px;
  color: var(--white);
  font-size: 1.2rem;
  line-height: 1.25;
}

.metric-board {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.metric-board div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.metric-board dt {
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.9rem;
}

.metric-board dd {
  margin: 0;
  color: var(--white);
  font-size: 1.28rem;
  font-weight: 900;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.proof-item {
  min-height: 128px;
  padding: 28px clamp(20px, 3vw, 42px);
  border-right: 1px solid var(--line);
}

.proof-item:last-child {
  border-right: 0;
}

.proof-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 900;
}

.proof-item span {
  display: block;
  color: var(--muted);
  font-size: 0.98rem;
}

.section {
  padding: 112px 0;
  scroll-margin-top: 92px;
}

.section-head {
  max-width: 880px;
  margin-bottom: 44px;
}

.lead {
  color: var(--muted);
  font-size: clamp(1.03rem, 1.5vw, 1.18rem);
}

.cell-visual {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: 48px;
  align-items: center;
  margin-bottom: 36px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cell-visual-copy h3 {
  margin: 0;
  font-size: clamp(1.55rem, 2.5vw, 2.25rem);
}

.cell-visual-copy > p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
}

.cell-visual-media {
  min-width: 0;
  margin: 0;
  aspect-ratio: 16 / 9;
  background: var(--white);
}

.cell-visual-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

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

.product-card {
  min-height: 420px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 50px rgba(20, 36, 63, 0.06);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(21, 89, 214, 0.28);
  box-shadow: var(--shadow);
}

.product-card.accent {
  border-color: rgba(17, 167, 161, 0.35);
  background: linear-gradient(180deg, rgba(17, 167, 161, 0.08), rgba(255, 255, 255, 0) 42%), var(--white);
}

.product-card.warm {
  border-color: rgba(200, 146, 43, 0.32);
  background: linear-gradient(180deg, rgba(200, 146, 43, 0.09), rgba(255, 255, 255, 0) 42%), var(--white);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.card-topline b {
  color: rgba(20, 36, 63, 0.18);
  font-size: 2.4rem;
  line-height: 1;
}

.product-card p {
  color: var(--muted);
}

.product-card dl {
  display: grid;
  gap: 12px;
  margin: 30px 0 0;
}

.product-card dl div {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.product-card dt {
  color: var(--ink);
  font-weight: 850;
}

.product-card dd {
  margin: 2px 0 0;
  color: var(--muted);
}

.dark-band {
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(180deg, rgba(7, 20, 38, 0.86), rgba(7, 20, 38, 0.92)),
    url("images/materials-lab.jpg") center / cover no-repeat;
}

.dark-band h2,
.dark-band h3 {
  color: var(--white);
}

.dark-band .lead {
  color: rgba(255, 255, 255, 0.72);
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
}

.scene-card {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  isolation: isolate;
}

.scene-card::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background: linear-gradient(180deg, rgba(7, 20, 38, 0.08), rgba(7, 20, 38, 0.88));
}

.scene-card img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}

.scene-card:hover img {
  transform: scale(1.06);
}

.scene-card div {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 28px;
}

.scene-card p {
  margin-bottom: 8px;
  color: var(--teal-bright);
  font-weight: 900;
}

.scene-card span {
  display: block;
  color: rgba(255, 255, 255, 0.76);
}

.split,
.lab-grid,
.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 64px;
  align-items: start;
}

.text-block {
  position: sticky;
  top: 120px;
}

.text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--blue);
  font-weight: 850;
}

.process-list {
  display: grid;
  gap: 14px;
}

.process-step {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.process-step:hover {
  transform: translateX(6px);
  box-shadow: 0 16px 48px rgba(20, 36, 63, 0.08);
}

.process-step span {
  display: grid;
  grid-row: 1 / span 2;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--navy);
  font-weight: 900;
}

.process-step h3 {
  grid-column: 2 / -1;
  margin-bottom: 8px;
  min-width: 0;
}

.process-step p {
  grid-column: 2 / -1;
  margin-bottom: 0;
  color: var(--muted);
  min-width: 0;
}

.lab-section {
  background: var(--panel);
}

.lab-grid {
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
}

.lab-image {
  width: 100%;
  min-height: 520px;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.lab-copy {
  padding: 20px 0;
}

.lab-copy p,
.about-copy p {
  color: var(--muted);
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
  font-weight: 700;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  content: "";
  background: var(--teal);
}

.about-band {
  background: var(--white);
}

.about-grid {
  align-items: center;
}

.value-panel {
  display: grid;
  gap: 16px;
}

.value-panel article {
  padding: 28px;
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  background: var(--panel);
}

.value-panel article:nth-child(2) {
  border-left-color: var(--teal);
}

.value-panel strong {
  display: block;
  margin-top: 8px;
  color: var(--ink);
  font-size: 1.32rem;
  line-height: 1.36;
}

.contact-section {
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7, 20, 38, 0.94), rgba(11, 29, 53, 0.86)),
    url("images/resources.jpg") center / cover no-repeat;
}

.contact-section h2 {
  color: var(--white);
}

.contact-section .lead,
.contact-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.contact-method {
  display: inline-grid;
  gap: 4px;
  margin-top: 26px;
  padding: 18px 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
}

.contact-method a {
  color: var(--white);
  font-weight: 900;
}

.inquiry-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.24);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 850;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--white);
  padding: 11px 13px;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(21, 89, 214, 0.1);
}

.form-submit {
  width: 100%;
  min-height: 50px;
}

.site-footer {
  padding: 34px 0;
  background: var(--navy);
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-copy {
  max-width: 680px;
}

.site-footer p {
  margin-bottom: 0;
  font-size: 0.94rem;
}

.icp-link {
  display: inline-block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
  transition: color 180ms ease;
}

.icp-link:hover {
  color: var(--white);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .menu-button {
    display: grid;
    color: var(--white);
  }

  .site-header.is-scrolled .menu-button,
  .site-header.menu-active .menu-button {
    color: var(--ink);
    border-color: rgba(20, 36, 63, 0.14);
    background: var(--white);
  }

  .nav-links {
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    padding: 10px 20px 22px;
    border-bottom: 1px solid rgba(20, 36, 63, 0.1);
    color: var(--ink);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 24px 52px rgba(20, 36, 63, 0.14);
    transform: translateY(-130%);
    transition: transform 220ms ease;
  }

  .nav-links.is-open {
    transform: translateY(0);
  }

  .nav-links a {
    min-height: 48px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line);
  }

  .nav-links a:last-child {
    border-bottom: 0;
  }

  .nav-cta {
    margin-top: 12px;
    justify-content: center;
    color: var(--white);
  }

  .hero-inner,
  .split,
  .lab-grid,
  .about-grid,
  .contact-grid,
  .cell-visual {
    grid-template-columns: 1fr;
  }

  .cell-visual {
    gap: 24px;
  }

  .hero-inner {
    align-items: end;
    min-height: 820px;
    padding-top: 126px;
    gap: 32px;
  }

  .hero-dashboard {
    max-width: 520px;
  }

  .proof-strip,
  .product-grid,
  .scene-grid {
    grid-template-columns: 1fr 1fr;
  }

  .text-block {
    position: static;
  }

  .lab-image {
    min-height: 380px;
  }
}

@media (max-width: 680px) {
  .wrap,
  .nav,
  .hero-inner,
  .scene-grid {
    width: min(100% - 28px, 1180px);
  }

  .nav {
    min-height: 70px;
  }

  .nav-links {
    top: 70px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(7, 20, 38, 0.72), rgba(7, 20, 38, 0.95)),
      url("images/advanced-cell-production.jpg") center / cover no-repeat;
  }

  .hero-inner {
    min-height: 760px;
    padding: 114px 0 38px;
  }

  h1 {
    font-size: clamp(2.54rem, 13vw, 4.6rem);
  }

  h2 {
    font-size: clamp(1.9rem, 8vw, 3rem);
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .proof-strip,
  .product-grid,
  .scene-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .proof-item {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-item:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 74px 0;
  }

  .cell-visual {
    margin-bottom: 28px;
    padding: 24px 0;
  }

  .product-card {
    min-height: auto;
    padding: 24px;
  }

  .scene-card {
    min-height: 360px;
  }

  .process-step {
    grid-template-columns: 1fr;
  }

  .process-step span,
  .process-step h3,
  .process-step p {
    grid-column: auto;
    grid-row: auto;
  }

  .lab-image {
    min-height: 300px;
  }

  .inquiry-form {
    padding: 20px;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Formal LanxinPower VI layer */
:root {
  --ink: #14243f;
  --blue: #1559d6;
  --blue-strong: #0b4a9e;
  --teal: #11a7a1;
  --teal-bright: #11a7a1;
  --navy: #071426;
  --font-cn: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Inter", "Arial", "Helvetica", sans-serif;
  --font-ui: var(--font-cn);
}

body {
  font-family: var(--font-ui);
}

h1,
h2,
h3,
.hero-stat strong,
.proof-item strong {
  letter-spacing: 0;
}

.brand {
  gap: 0;
  line-height: 0;
}

.brand-logo {
  display: block;
  width: 190px;
  max-width: 46vw;
  height: auto;
}

.brand-logo-standard {
  display: none;
}

.brand-logo-inverse {
  display: block;
}

.site-header.is-scrolled .brand-logo-standard,
.site-header.menu-active .brand-logo-standard {
  display: block;
}

.site-header.is-scrolled .brand-logo-inverse,
.site-header.menu-active .brand-logo-inverse {
  display: none;
}

.footer-brand .brand-logo {
  width: 188px;
  max-width: 56vw;
}

@media (max-width: 680px) {
  .brand-logo {
    width: 162px;
    max-width: 54vw;
  }

  .footer-brand .brand-logo {
    width: 176px;
    max-width: 64vw;
  }
}