:root {
  color-scheme: dark;
  --ink: #e7edf5;
  --muted: #94a1b2;
  --soft: #6c7889;
  --paper: #080b11;
  --white: #ffffff;
  --night: #05070b;
  --night-2: #0b1118;
  --line: rgba(255, 255, 255, 0.1);
  --line-dark: rgba(255, 255, 255, 0.13);
  --accent: #62e6ff;
  --accent-2: #5b8cff;
  --accent-deep: #62e6ff;
  --steel: #9aa8b8;
  --warm: #b7a074;
  --surface: #0e141d;
  --radius: 8px;
  --shadow: 0 24px 90px rgba(0, 0, 0, 0.5);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, #080b11 0%, #0a0e15 50%, #05070b 100%);
  line-height: 1.6;
}

body::selection {
  color: #031017;
  background: var(--accent);
}

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

.site-header {
  position: fixed;
  inset: 18px clamp(16px, 4vw, 48px) auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 14px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(5, 7, 11, 0.74);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 80px rgba(0, 0, 0, 0.24);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  display: block;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(98, 230, 255, 0.36);
  border-radius: 6px;
  background:
    linear-gradient(135deg, rgba(98, 230, 255, 0.12), rgba(91, 140, 255, 0.1)),
    rgba(255, 255, 255, 0.05);
  box-shadow:
    inset 0 0 18px rgba(98, 230, 255, 0.08),
    0 0 30px rgba(91, 140, 255, 0.12);
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(98, 230, 255, 0.72);
  border-radius: 3px;
  transform: rotate(-18deg) skewX(-10deg);
}

.brand-mark::before {
  inset: 11px 10px 13px 9px;
  background: rgba(98, 230, 255, 0.18);
}

.brand-mark::after {
  inset: 15px 7px 9px 13px;
  border-color: rgba(91, 140, 255, 0.74);
  background: rgba(91, 140, 255, 0.14);
}

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

.brand strong {
  font-size: 15px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  letter-spacing: 0;
  text-transform: uppercase;
}

nav {
  display: flex;
  gap: 4px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  white-space: nowrap;
}

nav a {
  border-radius: 6px;
  padding: 9px 12px;
  transition:
    color 180ms ease,
    background 180ms ease;
}

nav a:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.09);
}

.hero {
  position: relative;
  min-height: 94vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background:
    url("data:image/webp;base64,UklGRm4AAABXRUJQVlA4IGIAAADwAwCdASoYAA0ALrV2u12jqampiYC0SgCdMoAGoLMcEKhhU9Tf7kAAAP73fPdGPjtRC8wScJ1hOP7TH3y6ujCqQsbsuVbcwzIZD18WGjykpXHfHIxL8wkxwYuisnOBoXwAAA==")
      center / cover no-repeat,
    var(--night);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 20vh;
  content: "";
  background: linear-gradient(180deg, rgba(8, 9, 11, 0), var(--paper));
  pointer-events: none;
}

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

.hero-image {
  object-fit: cover;
  object-position: center;
  opacity: 0.7;
  filter: saturate(0.68) contrast(1.16) brightness(0.82);
  animation: hero-reveal 1100ms cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes hero-reveal {
  from {
    opacity: 0;
    filter: saturate(0.68) contrast(1.16) brightness(0.82) blur(18px);
    transform: scale(1.06);
  }
  to {
    opacity: 0.7;
    filter: saturate(0.68) contrast(1.16) brightness(0.82) blur(0);
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-image {
    animation: none;
  }
  html {
    scroll-behavior: auto;
  }
}

.hero-shade {
  background:
    radial-gradient(circle at 78% 28%, rgba(98, 230, 255, 0.24), transparent 28%),
    radial-gradient(circle at 62% 70%, rgba(91, 140, 255, 0.18), transparent 30%),
    linear-gradient(90deg, rgba(5, 7, 11, 0.98) 0%, rgba(9, 15, 23, 0.82) 43%, rgba(9, 15, 23, 0.16) 76%),
    linear-gradient(180deg, rgba(5, 7, 11, 0.58) 0%, rgba(5, 7, 11, 0.88) 100%);
}

.hero-grid {
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(98, 230, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(98, 230, 255, 0.1) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.76) 44%, transparent 78%);
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.76) 44%, transparent 78%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding-top: 104px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.dark-band .eyebrow,
.hero .eyebrow,
.contact-section .eyebrow {
  color: var(--accent);
}

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

h1 {
  max-width: 8.4em;
  margin-bottom: 24px;
  font-size: clamp(48px, 7.2vw, 96px);
  line-height: 1.01;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4.2vw, 56px);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.3;
}

.hero-copy {
  max-width: 690px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.77);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions,
.contact-section {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 800;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.primary-action {
  color: #031017;
  background: linear-gradient(135deg, var(--accent), #9fb8ff);
  box-shadow: 0 16px 48px rgba(98, 230, 255, 0.2);
}

.secondary-action {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.07);
}

.primary-action:hover,
.secondary-action:hover {
  transform: translateY(-2px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(760px, 100%);
  margin-top: clamp(48px, 8vh, 86px);
  border: 1px solid rgba(98, 230, 255, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.075);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.hero-metrics span {
  min-height: 86px;
  padding: 18px;
  color: rgba(255, 255, 255, 0.62);
  background:
    linear-gradient(180deg, rgba(98, 230, 255, 0.045), rgba(255, 255, 255, 0.015)),
    rgba(10, 12, 15, 0.56);
  font-size: 13px;
}

.hero-metrics strong {
  display: block;
  margin-bottom: 4px;
  color: var(--white);
  font-size: 18px;
  line-height: 1.2;
}

.section {
  padding: clamp(72px, 9vw, 124px) clamp(20px, 5vw, 72px);
}

.section > * {
  max-width: var(--max);
}

.section-heading {
  margin-bottom: 36px;
}

.intro-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.88fr) minmax(320px, 1.12fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: start;
  background: var(--paper);
}

.intro-section > * {
  max-width: none;
}

.intro-copy {
  color: #b6c0cc;
  font-size: 18px;
}

.intro-copy p:last-of-type,
.contact-section p:last-of-type {
  margin-bottom: 0;
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
}

.signal-row span {
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #d4dce6;
  background: rgba(255, 255, 255, 0.04);
  font-size: 13px;
  font-weight: 850;
  text-align: center;
  text-transform: uppercase;
}

.dark-band {
  color: var(--white);
  background:
    radial-gradient(circle at 76% 10%, rgba(98, 230, 255, 0.13), transparent 26%),
    linear-gradient(180deg, var(--night) 0%, var(--night-2) 100%),
    var(--night);
}

.dark-band .section-heading {
  margin-bottom: 46px;
}

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

.principle-grid article {
  min-height: 246px;
  padding: 30px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(98, 230, 255, 0.075), rgba(255, 255, 255, 0.025)),
    rgba(255, 255, 255, 0.03);
}

.principle-grid span {
  display: block;
  margin-bottom: 46px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.principle-grid h3 {
  color: var(--white);
}

.principle-grid p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.68);
}

.product-section {
  background:
    radial-gradient(circle at 22% 8%, rgba(91, 140, 255, 0.1), transparent 32%),
    linear-gradient(180deg, #070a10 0%, #0a0e15 100%);
}

.product-card {
  position: relative;
  min-height: 350px;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(98, 230, 255, 0.05), rgba(255, 255, 255, 0.015)),
    var(--surface);
  box-shadow: var(--shadow);
}

.product-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--steel));
}

.product-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.product-card:hover {
  transform: translateY(-4px);
  transition: transform 180ms ease;
}

.icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 28px;
  border: 1px solid rgba(98, 230, 255, 0.26);
  border-radius: 7px;
  color: var(--accent);
  background: linear-gradient(135deg, rgba(98, 230, 255, 0.18), rgba(91, 140, 255, 0.1));
  font-size: 15px;
  font-weight: 950;
}

.product-card .card-kicker {
  margin-bottom: 9px;
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.capability-band {
  display: grid;
  grid-template-columns: minmax(300px, 0.88fr) minmax(320px, 1.12fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: start;
  background:
    radial-gradient(circle at 85% 50%, rgba(98, 230, 255, 0.07), transparent 38%),
    #05070b;
}

.capability-band > * {
  max-width: none;
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  min-height: 74px;
  display: flex;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #d4dce6;
  background:
    linear-gradient(135deg, rgba(98, 230, 255, 0.075), rgba(91, 140, 255, 0.045)),
    var(--surface);
  font-weight: 720;
}

.contact-section {
  flex-direction: column;
  align-items: flex-start;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(5, 7, 11, 0.98), rgba(5, 7, 11, 0.9)),
    url("./assets/hero-960.webp") center / cover;
}

.contact-section > * {
  max-width: 860px;
}

.contact-section h2 {
  max-width: 850px;
}

.contact-section p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: #7e8a98;
  background: #05070b;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 14px;
}

footer span {
  max-width: var(--max);
}

@media (max-width: 920px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    inset: 14px 14px auto;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 800px;
  }

  .hero-content {
    width: calc(100% - 36px);
    padding-top: 158px;
  }

  .hero-metrics,
  .intro-section,
  .capability-band,
  .principle-grid,
  .product-grid,
  .capability-list {
    grid-template-columns: 1fr;
  }

  .product-card,
  .principle-grid article {
    min-height: auto;
  }

  .hero-metrics span {
    min-height: auto;
  }

  footer {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  nav {
    gap: 2px;
    font-size: 13px;
  }

  nav a {
    padding: 8px 9px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-content {
    width: calc(100% - 32px);
    padding-top: 142px;
  }

  h1 {
    max-width: 7.2em;
    font-size: clamp(40px, 14vw, 58px);
  }

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

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .section {
    padding: 62px 18px;
  }

  .signal-row {
    grid-template-columns: 1fr;
  }
}