:root {
  color-scheme: dark;
  --bg: #061014;
  --panel: rgba(13, 25, 33, 0.82);
  --panel-strong: rgba(17, 34, 43, 0.94);
  --line: rgba(124, 210, 255, 0.2);
  --line-strong: rgba(124, 210, 255, 0.42);
  --text: #f3f8fb;
  --muted: #a8bdc8;
  --cyan: #22c7ee;
  --blue: #2568e8;
  --orange: #ff8d2e;
  --green: #5bd6a3;
  --steel: #c8d2d8;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family:
    "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui,
    -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 72% 8%, rgba(34, 199, 238, 0.16), transparent 28%),
    radial-gradient(circle at 16% 30%, rgba(255, 141, 46, 0.08), transparent 24%),
    linear-gradient(180deg, #07151b 0%, #061014 48%, #081016 100%),
    var(--bg);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background:
    linear-gradient(90deg, rgba(124, 210, 255, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(124, 210, 255, 0.025) 1px, transparent 1px),
    linear-gradient(112deg, transparent 0 54%, rgba(255, 255, 255, 0.035) 54.2% 54.7%, transparent 55%);
  background-size: 96px 96px, 96px 96px, 280px 100%;
  mask-image: linear-gradient(to bottom, #000 0 50%, transparent 88%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(90deg, rgba(3, 10, 14, 0.92), transparent 18%, transparent 76%, rgba(3, 10, 14, 0.82)),
    linear-gradient(180deg, rgba(3, 10, 14, 0.08), rgba(3, 10, 14, 0.78));
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
  padding: 0 clamp(18px, 4vw, 54px);
  background: rgba(7, 14, 19, 0.68);
  border-bottom: 1px solid rgba(124, 210, 255, 0.12);
  backdrop-filter: blur(18px);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(7, 14, 19, 0.92);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #071016;
  font-weight: 900;
  background: linear-gradient(135deg, var(--cyan), #f6fbff 48%, var(--orange));
  border-radius: 8px;
  box-shadow: 0 0 26px rgba(34, 199, 238, 0.28);
}

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

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 36px);
  color: #d9edf4;
  font-size: 15px;
}

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

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

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

.nav-cta,
.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-cta,
.primary-action {
  color: #061017;
  background: linear-gradient(135deg, var(--cyan), #75e6ff);
  box-shadow: 0 12px 34px rgba(34, 199, 238, 0.24);
}

.secondary-action {
  color: #dff9ff;
  border: 1px solid var(--line-strong);
  background: rgba(13, 25, 33, 0.56);
}

.section-band,
.section-pad {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(430px, 1.14fr);
  gap: clamp(34px, 5vw, 68px);
  align-items: center;
  min-height: 100vh;
  padding-top: 98px;
}

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

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  font-size: 22px;
  line-height: 1.32;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 680px;
  margin-bottom: 30px;
  color: #c9dbe3;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
  margin: 0;
}

.hero-metrics div {
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(8, 18, 25, 0.66);
  border-radius: 8px;
}

.hero-metrics dt {
  margin-bottom: 5px;
  color: #fff;
  font-size: 26px;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  min-height: 600px;
  overflow: hidden;
  border: 1px solid rgba(124, 210, 255, 0.18);
  background:
    radial-gradient(circle at 67% 40%, rgba(34, 199, 238, 0.22), transparent 34%),
    linear-gradient(145deg, rgba(13, 30, 40, 0.84), rgba(4, 11, 15, 0.86) 68%),
    linear-gradient(90deg, rgba(255, 141, 46, 0.06), transparent 46%);
  border-radius: 8px;
  box-shadow:
    inset 0 0 90px rgba(34, 199, 238, 0.08),
    0 38px 120px rgba(0, 0, 0, 0.42);
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.hero-visual::before {
  inset: 0;
  background:
    linear-gradient(118deg, transparent 0 48%, rgba(255, 255, 255, 0.055) 48.2% 48.6%, transparent 49%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05), transparent 20% 80%, rgba(255, 255, 255, 0.04));
  opacity: 0.8;
}

.hero-visual::after {
  left: 18%;
  right: 6%;
  bottom: 120px;
  height: 150px;
  background: radial-gradient(ellipse at center, rgba(34, 199, 238, 0.32), transparent 68%);
  transform: perspective(500px) rotateX(66deg);
  filter: blur(4px);
}

.scan-grid {
  position: absolute;
  z-index: 2;
  inset: auto 5% 70px 12%;
  height: 190px;
  border: 1px solid rgba(34, 199, 238, 0.18);
  background:
    linear-gradient(rgba(34, 199, 238, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 199, 238, 0.12) 1px, transparent 1px);
  background-size: 42px 34px;
  transform: perspective(560px) rotateX(62deg);
  transform-origin: bottom;
}

.beam {
  position: absolute;
  z-index: 3;
  height: 2px;
  background: linear-gradient(90deg, transparent, #8becff, transparent);
  box-shadow: 0 0 18px rgba(34, 199, 238, 0.82);
  transform-origin: right center;
}

.beam-one {
  top: 86px;
  right: 18px;
  width: 470px;
  transform: rotate(-20deg);
  animation: beamPulse 2.5s ease-in-out infinite;
}

.beam-two {
  top: 142px;
  right: 96px;
  width: 330px;
  transform: rotate(-10deg);
  animation: beamPulse 2.5s 0.35s ease-in-out infinite;
}

@keyframes beamPulse {
  0%,
  100% {
    opacity: 0.42;
  }
  50% {
    opacity: 1;
  }
}

.device-scene {
  position: absolute;
  inset: 0;
}

.hero-product-img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  filter: saturate(1.02) contrast(1.02);
}

.oct-arc {
  position: absolute;
  right: 18px;
  bottom: 118px;
  z-index: 3;
  width: 520px;
  height: 190px;
  border: 2px solid rgba(34, 199, 238, 0.46);
  border-top: 0;
  border-radius: 50%;
  filter: drop-shadow(0 0 12px rgba(34, 199, 238, 0.55));
}

.hero-thumb-strip {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 24px;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hero-thumb-strip img {
  width: 100%;
  height: 92px;
  object-fit: contain;
  padding: 10px;
  border: 1px solid rgba(124, 210, 255, 0.2);
  background:
    linear-gradient(145deg, rgba(9, 22, 30, 0.84), rgba(5, 12, 17, 0.82)),
    radial-gradient(circle at center, rgba(255, 255, 255, 0.12), transparent 70%);
  border-radius: 8px;
  box-shadow: inset 0 0 30px rgba(34, 199, 238, 0.06);
}

.section-pad {
  padding: 96px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.intro {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
  border-top: 1px solid rgba(124, 210, 255, 0.16);
}

.intro-text {
  margin: 0;
  color: #d0e0e7;
  font-size: 20px;
  line-height: 1.95;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.tech-grid article,
.product-card,
.solution-strip article {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(14, 31, 40, 0.86), rgba(7, 14, 19, 0.72));
  border-radius: 8px;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.22);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease, border-color 0.2s ease;
}

.tech-grid article.is-visible,
.product-card.is-visible,
.solution-strip article.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.tech-grid article:hover,
.product-card:hover,
.solution-strip article:hover {
  border-color: rgba(124, 210, 255, 0.42);
}

.tech-grid article {
  min-height: 250px;
  padding: 26px;
}

.icon {
  display: block;
  width: 56px;
  height: 56px;
  margin-bottom: 24px;
  border: 1px solid rgba(34, 199, 238, 0.42);
  border-radius: 8px;
  background: rgba(34, 199, 238, 0.08);
}

.target-icon {
  background:
    radial-gradient(circle, transparent 0 8px, var(--cyan) 9px 10px, transparent 11px),
    linear-gradient(90deg, transparent 47%, var(--cyan) 48% 52%, transparent 53%),
    linear-gradient(transparent 47%, var(--cyan) 48% 52%, transparent 53%);
}

.waveform-icon {
  background:
    linear-gradient(90deg, transparent 0 16%, var(--cyan) 16% 18%, transparent 18% 30%, var(--cyan) 30% 34%, transparent 34% 42%, var(--cyan) 42% 46%, transparent 46% 100%),
    linear-gradient(transparent 48%, rgba(34, 199, 238, 0.7) 49% 51%, transparent 52%);
}

.shield-icon,
.integrate-icon {
  position: relative;
}

.shield-icon::before,
.integrate-icon::before {
  position: absolute;
  inset: 13px;
  content: "";
  border: 3px solid var(--cyan);
}

.shield-icon::before {
  border-radius: 18px 18px 24px 24px;
  clip-path: polygon(50% 0, 100% 18%, 84% 88%, 50% 100%, 16% 88%, 0 18%);
}

.integrate-icon::before {
  border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(34, 199, 238, 0.12);
}

.tech-grid h3,
.product-card h3,
.solution-strip h3 {
  margin-bottom: 12px;
}

.tech-grid p,
.product-card p,
.solution-strip p,
.contact-panel p,
.split-heading p {
  color: var(--muted);
  line-height: 1.78;
}

.split-heading {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  max-width: none;
}

.split-heading p:last-child {
  max-width: 440px;
  margin: 0;
  font-size: 17px;
}

.products {
  position: relative;
  z-index: 0;
}

.products::before {
  position: absolute;
  left: 50%;
  top: 52px;
  z-index: 0;
  width: min(1180px, 94vw);
  height: 78%;
  content: "";
  background:
    radial-gradient(circle at 18% 22%, rgba(34, 199, 238, 0.16), transparent 24%),
    radial-gradient(circle at 86% 70%, rgba(255, 141, 46, 0.1), transparent 22%),
    linear-gradient(180deg, rgba(12, 28, 38, 0.34), transparent);
  border: 1px solid rgba(124, 210, 255, 0.07);
  border-radius: 8px;
  transform: translateX(-50%);
}

.products > * {
  position: relative;
  z-index: 1;
}

.product-feature {
  display: grid;
  grid-template-columns: minmax(320px, 1.05fr) minmax(0, 0.95fr);
  gap: 18px;
  align-items: stretch;
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid rgba(124, 210, 255, 0.18);
  background:
    linear-gradient(145deg, rgba(13, 28, 37, 0.72), rgba(5, 12, 17, 0.78)),
    radial-gradient(circle at 14% 24%, rgba(34, 199, 238, 0.12), transparent 28%);
  border-radius: 8px;
}

.product-render {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid rgba(124, 210, 255, 0.14);
  background:
    radial-gradient(circle at center, rgba(34, 199, 238, 0.16), transparent 58%),
    linear-gradient(150deg, rgba(9, 23, 31, 0.96), rgba(2, 9, 13, 0.9));
  border-radius: 8px;
}

.product-render::after {
  position: absolute;
  left: 18%;
  right: 18%;
  bottom: 34px;
  height: 64px;
  content: "";
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.36), transparent 68%);
  filter: blur(6px);
}

.product-render img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.04) contrast(1.02);
}

.product-copy {
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(34, 199, 238, 0.08), transparent 36%),
    rgba(8, 19, 26, 0.88);
  border-radius: 8px;
  box-shadow: inset 0 0 40px rgba(34, 199, 238, 0.035);
}

.product-copy h3 {
  max-width: 680px;
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 48px);
}

.product-copy > p:not(.eyebrow) {
  color: #f1f5f7;
  font-size: 18px;
  line-height: 1.88;
}

.spec-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.spec-list li {
  display: grid;
  grid-template-columns: minmax(100px, 0.55fr) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 6px;
}

.spec-list span,
.spec-list strong {
  padding: 14px 16px;
}

.spec-list span {
  color: #081016;
  background: #e8eef7;
}

.spec-list strong {
  color: var(--orange);
  font-size: 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.product-card {
  display: grid;
  grid-template-columns: minmax(240px, 0.44fr) minmax(0, 0.56fr);
  column-gap: 28px;
  align-items: center;
  padding: 20px;
  min-height: 280px;
}

.mini-render {
  position: relative;
  grid-row: 1 / span 4;
  height: 240px;
  margin-bottom: 0;
  overflow: hidden;
  border: 1px solid rgba(124, 210, 255, 0.18);
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.14), transparent 62%),
    linear-gradient(145deg, rgba(12, 31, 42, 0.96), rgba(2, 9, 13, 0.9));
  border-radius: 8px;
}

.mini-render img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.04) contrast(1.02);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-row span {
  padding: 8px 10px;
  color: #dff8ff;
  font-size: 13px;
  border: 1px solid rgba(34, 199, 238, 0.3);
  background: rgba(34, 199, 238, 0.08);
  border-radius: 5px;
}

.solution-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.solution-strip article {
  min-height: 250px;
  padding: 28px;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.solution-strip span {
  display: block;
  margin-bottom: 46px;
  color: var(--orange);
  font-size: 14px;
  font-weight: 900;
}

.contact-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: clamp(30px, 6vw, 60px);
  border: 1px solid rgba(124, 210, 255, 0.3);
  background:
    linear-gradient(135deg, rgba(34, 199, 238, 0.12), transparent 44%),
    rgba(13, 25, 33, 0.88);
  border-radius: 8px;
}

.contact-panel h2 {
  margin-bottom: 18px;
}

.contact-panel p:last-child {
  max-width: 700px;
  margin-bottom: 0;
  font-size: 18px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 46px;
  color: var(--muted);
  border-top: 1px solid rgba(124, 210, 255, 0.16);
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    flex-wrap: wrap;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .brand {
    flex: 1 1 260px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero,
  .intro,
  .product-feature {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 146px;
  }

  .hero-visual {
    min-height: 500px;
  }

  .hero-product-img {
    width: min(76%, 520px);
  }

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

  .product-card {
    grid-template-columns: minmax(230px, 0.44fr) minmax(0, 0.56fr);
  }

  .split-heading,
  .contact-panel {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .section-band,
  .section-pad,
  .site-footer {
    width: min(100% - 28px, var(--max));
  }

  .nav-cta {
    display: none;
  }

  .site-nav a {
    font-size: 14px;
  }

  .hero {
    min-height: auto;
    padding-bottom: 56px;
  }

  .hero-metrics,
  .tech-grid,
  .product-grid,
  .solution-strip {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
  }

  .hero-visual {
    min-height: 520px;
  }

  .hero-product-img {
    right: 14px;
    bottom: 128px;
    width: min(88%, 390px);
  }

  .oct-arc {
    right: -70px;
    bottom: 92px;
    transform: scale(0.72);
  }

  .hero-thumb-strip {
    left: 16px;
    right: 16px;
    bottom: 16px;
    gap: 8px;
  }

  .hero-thumb-strip img {
    height: 74px;
    padding: 7px;
  }

  .section-pad {
    padding: 64px 0;
  }

  .product-render {
    min-height: 430px;
  }

  .product-feature {
    padding: 12px;
  }

  .product-card {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .mini-render {
    grid-row: auto;
    height: 220px;
    margin-bottom: 22px;
  }

  .spec-list li {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}