:root {
  --deep: #07111f;
  --deep-2: #0a1628;
  --panel: rgba(18, 25, 35, 0.84);
  --panel-strong: rgba(12, 20, 30, 0.96);
  --line: rgba(255, 255, 255, 0.08);
  --text: #e8ecf1;
  --muted: #aab2c0;
  --soft: #b8c0ca;
  --amber: #d98c24;
  --amber-2: #f2a13a;
  --medical: #d0e3f0;
  --paper: #f7f8fa;
  --ink: #142033;
  --radius: 18px;
  --radius-sm: 6px;
  --shadow: 0 24px 46px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--deep);
  color: var(--text);
  font-family: Inter, "HarmonyOS Sans", "Noto Sans SC", "Alibaba PuHuiTi", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  letter-spacing: 0;
}

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

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

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  padding: 1.1rem clamp(1.2rem, 4vw, 3rem);
  background: rgba(7, 17, 31, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  min-width: 150px;
  color: #fff;
  font-size: 1.45rem;
  font-weight: 750;
  letter-spacing: 0;
  white-space: nowrap;
}

.logo span {
  color: var(--amber-2);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 2vw, 2rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 560;
  transition: color 0.18s ease;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--amber-2);
}

.btn-request,
.btn-primary,
.btn-secondary,
.btn-medical,
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.68rem 1.45rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-request,
.btn-primary {
  color: var(--deep);
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  border: 0;
}

.btn-request:hover,
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(217, 140, 36, 0.34);
}

.btn-secondary,
.btn-link {
  color: var(--amber-2);
  background: transparent;
  border: 1.5px solid var(--amber);
}

.btn-secondary:hover,
.btn-link:hover {
  background: rgba(217, 140, 36, 0.1);
}

.btn-medical {
  color: var(--medical);
  border: 1.5px solid var(--medical);
}

.btn-medical:hover {
  color: var(--amber-2);
  border-color: var(--amber-2);
  background: rgba(208, 227, 240, 0.08);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  background: transparent;
  border: 0;
}

.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--muted);
}

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 1.14fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  min-height: 720px;
  padding: clamp(3.2rem, 8vw, 6rem) clamp(1.2rem, 5vw, 4rem);
  background:
    radial-gradient(circle at 26% 20%, rgba(217, 140, 36, 0.1) 0, transparent 36%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0 1px, transparent 1px 72px),
    var(--deep);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--amber-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

.hero h1 {
  max-width: 760px;
  margin-bottom: 1.1rem;
  color: #fff;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 760;
  line-height: 1.06;
}

.subhead {
  max-width: 720px;
  margin-bottom: 1.7rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.55vw, 1.28rem);
  line-height: 1.75;
}

.tagline,
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.tagline span,
.tag-cloud span,
.app-tags span {
  padding: 0.35rem 0.85rem;
  color: #d5dbe3;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 0.84rem;
}

.hero-buttons,
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-image {
  overflow: hidden;
  border: 1px solid rgba(242, 161, 58, 0.16);
  border-radius: var(--radius);
  background: #101820;
  box-shadow: var(--shadow);
}

.hero-image img {
  width: 100%;
  min-height: 430px;
  object-fit: cover;
}

.product-visual {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.visual-item {
  min-height: 112px;
  padding: 1rem;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--amber-2);
  background: rgba(255, 255, 255, 0.032);
  border: 1px solid rgba(242, 161, 58, 0.15);
  border-radius: var(--radius);
  font-size: 0.88rem;
}

.medical-banner {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 1.08fr);
  align-items: center;
  gap: clamp(1.8rem, 5vw, 4rem);
  padding: clamp(3.2rem, 7vw, 5rem) clamp(1.2rem, 5vw, 4rem);
  background: linear-gradient(105deg, #07111f 0%, #0b1a2d 45%, #0f1e32 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.medical-banner h2 {
  margin-bottom: 1rem;
  color: #fff;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.12;
}

.highlight {
  color: var(--amber-2);
}

.medical-banner p,
.section-sub,
.page-header p,
.card p,
.app-card p,
.material-card li,
.detail-card p,
.product-card p,
.contact-copy p {
  color: var(--muted);
}

.medical-banner-image {
  overflow: hidden;
  border: 1px solid rgba(208, 227, 240, 0.18);
  border-radius: var(--radius);
  background: #101820;
  box-shadow: var(--shadow);
}

.medical-banner-image img {
  width: 100%;
  aspect-ratio: 1.45;
  object-fit: cover;
}

section,
.page-header,
.page-section {
  max-width: 1320px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) clamp(1.2rem, 4vw, 3rem);
}

.section-title {
  margin-bottom: 0.85rem;
  color: #fff;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.14;
}

.section-sub {
  max-width: 760px;
  margin-bottom: 2.2rem;
  font-size: 1.05rem;
  line-height: 1.75;
}

.card-grid,
.material-platform,
.applications-grid,
.sample-gallery,
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.card,
.material-card,
.app-card,
.app-detail-card,
.detail-card,
.product-card {
  background: linear-gradient(145deg, rgba(20, 30, 44, 0.84) 0%, rgba(12, 20, 30, 0.95) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card,
.material-card,
.app-detail-card,
.detail-card,
.product-card {
  padding: 2rem;
}

.card:hover,
.material-card:hover,
.app-card:hover,
.app-detail-card:hover,
.detail-card:hover,
.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(242, 161, 58, 0.32);
  box-shadow: var(--shadow);
}

.advantage-icon,
.app-subtitle,
.material-card .series,
.metric {
  color: var(--amber-2);
  font-weight: 800;
}

.card h3,
.material-card h3,
.app-card h4,
.app-detail-card h3,
.detail-card h3,
.product-card h3 {
  color: #fff;
}

.card p,
.app-detail-card p,
.detail-card p,
.product-card p {
  line-height: 1.7;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1rem;
}

.app-card {
  min-height: 170px;
  padding: 1.4rem 1rem;
  text-align: center;
}

.app-card h4 {
  margin-bottom: 0.5rem;
  font-size: 1.08rem;
}

.app-icon {
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 1.2rem;
  place-items: center;
  color: var(--deep);
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  border-radius: var(--radius-sm);
  font-weight: 900;
}

.app-detail-card {
  display: flex;
  flex-direction: column;
}

.app-card-image {
  width: 100%;
  aspect-ratio: 1.45;
  object-fit: cover;
  margin-bottom: 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background: #101820;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

main.applications-grid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem clamp(1.2rem, 4vw, 3rem) clamp(3rem, 7vw, 5rem);
}

.app-detail-card p {
  flex: 1;
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.52rem;
  margin: 0.5rem 0 1.4rem;
}

.material-card ul,
.detail-card ul {
  display: grid;
  gap: 0.6rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.cap-item {
  padding: 0.8rem 1.5rem;
  color: #d0d5dd;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 999px;
  font-weight: 650;
}

.sample-gallery article {
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.sample-gallery.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sample-gallery img,
.product-card img {
  width: 100%;
  aspect-ratio: 1.28;
  object-fit: cover;
  background: #101820;
}

.sample-gallery h3,
.sample-gallery p {
  padding: 0 1rem;
}

.sample-gallery h3 {
  margin: 1rem 0 0.35rem;
  color: #fff;
}

.sample-gallery p {
  margin-bottom: 1.2rem;
  color: var(--muted);
  line-height: 1.65;
}

.page-header {
  text-align: center;
}

.page-header h1 {
  margin-bottom: 1rem;
  color: #fff;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.12;
}

.page-header p {
  max-width: 860px;
  margin: 0 auto;
  font-size: 1.12rem;
  line-height: 1.75;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1.18fr);
  gap: 1.5rem;
  align-items: start;
}

.featured-product {
  display: grid;
  grid-template-columns: minmax(300px, 1.05fr) minmax(260px, 0.95fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #101820;
}

.featured-product img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.featured-product > div {
  display: grid;
  align-content: center;
  justify-items: start;
  padding: clamp(1.6rem, 4vw, 3rem);
}

.featured-product h2 {
  margin-bottom: 1rem;
  color: #fff;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.cta-section {
  max-width: none;
  text-align: center;
  background: radial-gradient(circle at 30% 50%, rgba(217, 140, 36, 0.13) 0%, transparent 60%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.cta-section .section-sub {
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  justify-content: center;
  margin-top: 2rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
  gap: 2rem;
}

.contact-info {
  display: grid;
  gap: 0.8rem;
  margin: 1.6rem 0 1.4rem;
  padding: 1.35rem;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
}

.contact-info p {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0.8rem;
  margin: 0;
}

.contact-info strong {
  color: #fff;
}

.contact-info span,
.contact-info a {
  color: var(--amber-2);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 2rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact-form label {
  display: grid;
  gap: 0.45rem;
  color: #dfe6ee;
  font-size: 0.9rem;
  font-weight: 700;
}

.contact-form .full {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.72rem 0.8rem;
  color: #fff;
  background: rgba(7, 17, 31, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  font: inherit;
}

textarea {
  resize: vertical;
}

.footer {
  padding: 2rem;
  color: #6b7280;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer a:hover {
  color: var(--amber-2);
}

@media (max-width: 1100px) {
  .hero,
  .medical-banner,
  .two-col,
  .featured-product,
  .contact-layout {
    grid-template-columns: 1fr;
  }

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

  .card-grid,
  .material-platform,
  .applications-grid,
  .sample-gallery,
  .sample-gallery.four-up,
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .navbar {
    flex-wrap: wrap;
    padding: 1rem 1.2rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: 0.7rem;
    background: var(--deep-2);
    border: 1px solid var(--line);
    border-radius: 12px;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 0.75rem;
  }

  .btn-request {
    margin-left: auto;
  }

  .hero {
    min-height: auto;
  }

  .hero-image img {
    min-height: 300px;
  }

  .product-visual,
  .app-grid,
  .card-grid,
  .material-platform,
  .applications-grid,
  .sample-gallery,
  .sample-gallery.four-up,
  .product-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .logo {
    font-size: 1.2rem;
  }

  .btn-request {
    padding: 0.58rem 0.9rem;
  }

  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary,
  .cta-buttons .btn-primary,
  .cta-buttons .btn-secondary {
    width: 100%;
  }
}