:root {
  color-scheme: light;
  --ink: #0f1724;
  --muted: #64748b;
  --line: #dbe3ee;
  --panel: #ffffff;
  --panel-strong: #f5f8fc;
  --accent: #0f766e;
  --accent-2: #2563eb;
  --accent-dark: #0f3d5e;
  --warm: #f59e0b;
  --shadow: 0 24px 70px rgba(15, 23, 36, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 112px;
}

body {
  margin: 0;
  background: #f7f9fc;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 227, 238, 0.9);
  backdrop-filter: blur(18px);
}

.topbar {
  display: flex;
  justify-content: center;
  gap: 28px;
  padding: 8px 24px;
  background: #0f1724;
  color: #cbd5e1;
  font-size: 12px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1180px;
  min-height: 72px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 110px;
  height: auto;
  flex: 0 0 auto;
}

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

.brand-copy small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #334155;
  font-size: 15px;
}

.nav-links a {
  display: grid;
  gap: 2px;
}

.nav-links a small {
  color: #7a8aa0;
  font-size: 11px;
  line-height: 1.1;
}

.nav-links a:hover,
.nav-links a[aria-current="page"],
.text-link:hover {
  color: var(--accent);
}

.nav-links a[aria-current="page"] {
  font-weight: 700;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 650px;
  overflow: hidden;
  padding: 76px 24px 64px;
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(40vw, 540px);
  min-width: 0;
  margin-left: max(0px, calc((100vw - 1180px) / 2));
}

.hero h1 {
  font-size: clamp(38px, 4.3vw, 58px);
}

.hero-background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

h2 span,
.h1-en {
  display: block;
  margin-top: 10px;
  color: #5f7188;
  font-size: 0.46em;
  font-weight: 700;
  line-height: 1.35;
}

.h1-en {
  color: #334155;
  font-size: clamp(20px, 2vw, 25px);
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 small {
  display: block;
  margin-top: 7px;
  color: #64748b;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.35;
}

.dual-copy {
  display: grid;
  gap: 10px;
}

.dual-copy p {
  margin-bottom: 0;
}

.dual-copy p + p {
  color: #60738d;
}

.hero-lead {
  max-width: 500px;
  margin-bottom: 30px;
  color: #475569;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  min-height: 54px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  white-space: nowrap;
}

.btn small {
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.1;
  opacity: 0.82;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 16px 28px rgba(15, 118, 110, 0.22);
}

.btn-primary:hover {
  background: #0d665f;
}

.btn-secondary {
  border-color: #cbd5e1;
  background: #fff;
  color: #0f1724;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid #d6e0ec;
  border-radius: 999px;
  background: #fff;
  color: #385068;
  font-size: 13px;
  font-weight: 700;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  box-shadow: 0 16px 40px rgba(15, 23, 36, 0.06);
}

.proof-strip div {
  min-width: 0;
  padding: 22px 24px;
  background: #fff;
}

.proof-strip strong {
  display: block;
  margin-bottom: 8px;
  color: #0f3d5e;
  font-size: 16px;
}

.proof-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 76px 24px;
}

.intro-band {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 52px;
  align-items: end;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.intro-band p:last-child {
  color: #475569;
  font-size: 17px;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 17px;
}

.align-left {
  margin: 0;
  text-align: left;
}

.selector-section {
  padding-top: 64px;
}

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

.selector-grid article,
.resource-grid article {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(15, 23, 36, 0.06);
}

.selector-grid article {
  border-top: 4px solid var(--accent);
}

.selector-grid span,
.resource-grid strong {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--warm);
  font-weight: 900;
}

.selector-grid p,
.resource-grid p {
  margin-bottom: 6px;
  color: var(--muted);
}

.selector-grid p:last-child {
  margin-bottom: 0;
  color: #60738d;
  font-size: 14px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 14px 36px rgba(15, 23, 36, 0.06);
}

.product-card.featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
}

.product-content {
  flex: 1;
  padding: 24px;
}

.product-content p,
.product-content li {
  color: var(--muted);
}

.product-content p + p {
  color: #60738d;
  font-size: 14px;
}

.product-content ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

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

.spec-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  background: #e8f3f1;
  color: #0f766e;
  font-size: 12px;
  font-weight: 800;
}

.product-media {
  display: grid;
  min-height: 250px;
  overflow: hidden;
  place-items: center;
  border-bottom: 1px solid var(--line);
  background: #f5f7fa;
}

.product-media img {
  width: 100%;
  height: 100%;
  max-height: 330px;
  object-fit: contain;
  transition: transform 220ms ease;
}

.product-media:hover img {
  transform: scale(1.025);
}

.product-card.featured .product-media {
  min-height: 100%;
  border-right: 1px solid var(--line);
  border-bottom: 0;
}

.product-card.featured .product-media img {
  max-height: 520px;
}

.product-disclaimer {
  max-width: 940px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.section-action {
  display: flex;
  justify-content: center;
  margin-top: 26px;
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 44px;
  align-items: start;
}

.text-link {
  display: inline-flex;
  margin-top: 10px;
  color: var(--accent-dark);
  font-weight: 800;
}

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

.capability-list article,
.application-grid article {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.capability-list span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--warm);
  font-weight: 900;
}

.capability-list p,
.application-grid p {
  margin-bottom: 6px;
  color: var(--muted);
}

.capability-image {
  width: 100%;
  margin-top: 28px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}

.factory-feature {
  position: relative;
  margin: 0 0 18px;
  overflow: hidden;
  border-radius: var(--radius);
  background: #111827;
}

.factory-feature img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.factory-feature figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  gap: 4px;
  padding: 46px 24px 20px;
  background: linear-gradient(0deg, rgba(15, 23, 36, 0.88), rgba(15, 23, 36, 0));
  color: #fff;
}

.factory-feature figcaption strong {
  font-size: 21px;
}

.factory-feature figcaption span {
  max-width: 760px;
  color: #dbe4f0;
  font-size: 14px;
}

.factory-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 30px;
}

.factory-gallery figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.factory-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.factory-gallery figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 14px;
}

.factory-gallery figcaption span {
  color: var(--muted);
  font-size: 12px;
}

.application-grid p:last-child {
  margin-bottom: 0;
  color: #60738d;
  font-size: 14px;
}

.quality-section {
  padding: 78px 24px;
  background: #101827;
  color: #fff;
}

.quality-section .section-heading p:not(.eyebrow) {
  color: #a9b7cc;
}

.quality-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}

.quality-image {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.14);
}

.quality-grid div {
  min-height: 150px;
  padding: 28px;
  background: #172236;
}

.quality-grid strong {
  display: block;
  margin-bottom: 16px;
  color: #67e8f9;
  font-size: 20px;
}

.quality-grid span {
  color: #dbeafe;
  font-size: 14px;
}

.resources-section {
  border-bottom: 1px solid var(--line);
}

.resource-grid article {
  position: relative;
  overflow: hidden;
}

.resource-grid article::after {
  position: absolute;
  top: -32px;
  right: -32px;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.08);
  content: "";
}

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

.application-grid article span {
  display: block;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: linear-gradient(135deg, #0f766e, #f59e0b);
}

.cta-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto 80px;
  padding: 40px 24px;
}

.cta-copy p:not(.eyebrow) {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 17px;
}

.inquiry-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.inquiry-list li {
  padding: 10px 12px;
  border: 1px solid #dbe3ee;
  border-radius: 8px;
  background: #fff;
  color: #334155;
  font-size: 13px;
  font-weight: 800;
}

.quote-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.quote-form label {
  display: grid;
  gap: 7px;
  color: #334155;
  font-weight: 800;
}

.quote-form input,
.quote-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  font: inherit;
}

.quote-form input:focus,
.quote-form textarea:focus {
  border-color: var(--accent);
  outline: 3px solid rgba(15, 118, 110, 0.16);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 24px;
  background: #0f1724;
  color: #dbe4f0;
}

.footer p {
  margin: 6px 0 0;
  color: #94a3b8;
}

.footer-links {
  display: flex;
  gap: 20px;
}

@media (max-width: 980px) {
  .intro-band,
  .split,
  .cta-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 600px;
  }

  .hero-copy {
    width: min(54vw, 580px);
  }

  .product-grid,
  .application-grid,
  .selector-grid,
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card.featured {
    grid-column: span 2;
  }

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

  .quality-image {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

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

@media (max-width: 720px) {
  .topbar {
    display: none;
  }

  .nav {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand-logo {
    width: 96px;
  }

  .brand-copy strong {
    font-size: 14px;
  }

  .brand-copy small {
    font-size: 10px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
  }

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

  .hero,
  .section,
  .cta-section {
    padding-right: 16px;
    padding-left: 16px;
  }

  .hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    min-height: 0;
    padding-top: 0;
    padding-bottom: 0;
  }

  .hero-copy {
    order: 2;
    width: 100%;
    margin: 0;
    padding-top: 30px;
    padding-bottom: 34px;
  }

  .hero-background {
    position: relative;
    order: 1;
    width: calc(100% + 32px);
    max-width: none;
    height: auto;
    margin-right: -16px;
    margin-left: -16px;
    aspect-ratio: 16 / 9;
    object-position: right center;
  }

  h1 {
    font-size: 34px;
    line-height: 1.12;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .product-grid,
  .application-grid,
  .selector-grid,
  .resource-grid,
    .capability-list,
    .quality-grid,
    .proof-strip {
    grid-template-columns: 1fr;
  }

  .product-card.featured {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }

  .product-card.featured .product-media {
    min-height: 250px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .factory-feature figcaption {
    position: static;
    padding: 18px;
    background: #172236;
  }

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

  .quote-form {
    padding: 20px;
  }

  .footer {
    flex-direction: column;
  }
}