:root {
  --ink: #102234;
  --muted: #5d6975;
  --line: #dfe5ea;
  --paper: #ffffff;
  --soft: #f5f7f8;
  --teal: #1aa896;
  --blue: #2c7be5;
  --copper: #c9862b;
  --charcoal: #0c1b28;
  --shadow: 0 18px 55px rgba(16, 34, 52, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.6;
  background: var(--paper);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 10px clamp(18px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 229, 234, 0.8);
  backdrop-filter: blur(16px);
}

.brand img {
  width: 220px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 30px);
  color: #2c3c4a;
  font-size: 15px;
  font-weight: 600;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  content: "";
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: calc(100vh - 76px);
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: var(--charcoal);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 19, 30, 0.9) 0%, rgba(8, 19, 30, 0.72) 36%, rgba(8, 19, 30, 0.16) 74%),
    linear-gradient(0deg, rgba(8, 19, 30, 0.46), rgba(8, 19, 30, 0.08));
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 96px);
  padding: 62px 0 92px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(38px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 690px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(16px, 1.7vw, 20px);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.button.primary {
  color: #fff;
  background: var(--teal);
  box-shadow: 0 16px 36px rgba(26, 168, 150, 0.24);
}

.button.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.1);
}

.button.outline {
  color: var(--ink);
  border-color: var(--line);
  background: #fff;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 620px;
  margin: 38px 0 0;
}

.hero-metrics div {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.hero-metrics dt {
  font-size: 24px;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.section {
  padding: clamp(68px, 8vw, 112px) clamp(18px, 4vw, 64px);
}

.section-head {
  max-width: 880px;
  margin: 0 auto 36px;
}

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

.section h2 {
  margin: 0;
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-head p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.intro-band,
.news-section {
  background: var(--soft);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: 34px;
  max-width: 1180px;
  margin: 0 auto;
}

.intro-copy {
  color: #394856;
  font-size: 18px;
}

.intro-copy p {
  margin: 0 0 18px;
}

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

.value-list article,
.solution-grid article,
.news-grid article,
.product-card,
.process article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(16, 34, 52, 0.06);
}

.value-list article {
  padding: 22px;
}

.value-list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 19px;
}

.value-list span,
.product-card p,
.solution-grid p,
.process p,
.news-grid p,
.contact-layout p {
  color: var(--muted);
}

.product-section {
  background: #fff;
}

.product-showcase {
  max-width: 1120px;
  margin: 0 auto 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.product-showcase img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.product-card {
  min-height: 268px;
  padding: 24px;
}

.product-card h3,
.solution-grid h3,
.process h3,
.news-grid h3 {
  margin: 14px 0 8px;
  font-size: 20px;
  line-height: 1.3;
}

.product-card p,
.solution-grid p,
.process p,
.news-grid p {
  margin: 0;
}

.product-card span[class^="icon-"] {
  display: inline-grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 8px;
  background: #eef8f6;
}

.product-card span[class^="icon-"]::before {
  display: block;
  width: 25px;
  height: 25px;
  content: "";
  background: var(--teal);
}

.icon-chip::before {
  clip-path: polygon(12% 12%, 88% 12%, 88% 88%, 12% 88%);
}

.icon-probe::before {
  clip-path: polygon(12% 36%, 70% 36%, 88% 50%, 70% 64%, 12% 64%);
}

.icon-wave::before {
  clip-path: polygon(0 55%, 15% 38%, 30% 55%, 45% 38%, 60% 55%, 75% 38%, 100% 58%, 100% 74%, 75% 54%, 60% 72%, 45% 54%, 30% 72%, 15% 54%, 0 72%);
}

.icon-nmr::before {
  border: 5px solid var(--teal);
  border-radius: 50%;
  background: transparent !important;
}

.icon-control::before {
  clip-path: polygon(10% 18%, 90% 18%, 90% 82%, 10% 82%);
}

.icon-connector::before {
  clip-path: polygon(10% 32%, 54% 32%, 54% 18%, 90% 50%, 54% 82%, 54% 68%, 10% 68%);
}

.split-section {
  background: linear-gradient(180deg, #ffffff 0%, #f6f8f9 100%);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.solution-grid article {
  min-height: 220px;
  padding: 24px;
  border-top: 4px solid var(--copper);
}

.capability-band {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(12, 27, 40, 0.96), rgba(21, 43, 52, 0.96)),
    radial-gradient(circle at 80% 20%, rgba(26, 168, 150, 0.24), transparent 34%);
}

.capability-band .section-head p,
.capability-band .process p {
  color: rgba(255, 255, 255, 0.72);
}

.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
}

.process article {
  min-height: 230px;
  padding: 24px;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

.process span {
  color: var(--copper);
  font-size: 14px;
  font-weight: 900;
}

.quality-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 1180px;
  margin: 28px auto 0;
}

.quality-points span {
  padding: 8px 13px;
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.news-grid article {
  padding: 24px;
}

.news-grid time {
  color: var(--teal);
  font-weight: 900;
}

.contact-section {
  background: #fff;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto 32px;
  align-items: start;
}

.contact-layout h2,
.cooperation-head h2 {
  margin: 0;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.18;
}

.contact-panel,
.cooperation-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.contact-panel {
  padding: 26px;
}

.contact-panel dl {
  margin: 0;
}

.contact-panel div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.contact-panel div:last-child {
  border-bottom: 0;
}

dt {
  color: var(--muted);
  font-weight: 700;
}

dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 700;
}

.cooperation-box {
  max-width: 1180px;
  margin: 0 auto;
  padding: 26px;
}

.cooperation-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.cooperation-head p {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
}

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

.cooperation-grid article {
  min-height: 186px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.cooperation-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: #fff;
  font-weight: 900;
  border-radius: 50%;
  background: var(--teal);
}

.cooperation-grid h3 {
  margin: 14px 0 8px;
  font-size: 19px;
  line-height: 1.3;
}

.cooperation-grid p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 4vw, 64px);
  color: rgba(255, 255, 255, 0.78);
  background: var(--charcoal);
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.site-footer strong {
  color: #fff;
}

.site-footer a {
  color: #fff;
  font-weight: 800;
}

@media (max-width: 1060px) {
  .product-grid,
  .news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .solution-grid,
  .process,
  .cooperation-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    min-height: 68px;
  }

  .brand img {
    width: 190px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    padding: 12px;
  }

  .site-nav a::after {
    display: none;
  }

  .hero {
    min-height: 720px;
  }

  .hero-image {
    object-position: 58% center;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(8, 19, 30, 0.92), rgba(8, 19, 30, 0.5));
  }

  .intro-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .product-showcase img {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 620px) {
  .hero-content {
    width: calc(100% - 32px);
    margin: 0 auto;
    padding-bottom: 80px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-metrics,
  .product-grid,
  .solution-grid,
  .process,
  .news-grid,
  .cooperation-grid {
    grid-template-columns: 1fr;
  }

  .contact-panel div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .cooperation-head,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}