:root {
  color-scheme: light;
  --ink: #071421;
  --muted: #51606c;
  --line: rgba(7, 20, 33, 0.12);
  --paper: #f6f9fb;
  --white: #ffffff;
  --blue: #1769ff;
  --cyan: #22c7d9;
  --mint: #5ee6b6;
  --navy: #0b2742;
  --shadow: 0 18px 48px rgba(10, 35, 58, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    sans-serif;
  color: var(--ink);
  background: var(--paper);
}

body.is-loading {
  overflow: hidden;
}

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

.cursor-glow {
  position: fixed;
  z-index: 1;
  width: 280px;
  height: 280px;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 199, 217, 0.2), transparent 64%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 180ms ease;
}

.loader {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 18px;
  color: white;
  background:
    radial-gradient(circle at 50% 42%, rgba(34, 199, 217, 0.28), transparent 26%),
    linear-gradient(135deg, #06111d, #0c3354 58%, #1769ff);
  transition:
    opacity 520ms ease,
    visibility 520ms ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader p,
.loader strong {
  margin: 0;
  color: white;
}

.loader p {
  font-size: clamp(34px, 8vw, 72px);
  font-weight: 900;
  line-height: 0.95;
}

.loader strong {
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.loader-orbit {
  position: relative;
  width: 116px;
  height: 116px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  animation: spin 1800ms linear infinite;
}

.loader-orbit span {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 32px rgba(94, 230, 182, 0.8);
}

.loader-orbit span:nth-child(1) {
  top: -7px;
  left: 50%;
}

.loader-orbit span:nth-child(2) {
  right: 9px;
  bottom: 15px;
  background: var(--cyan);
}

.loader-orbit span:nth-child(3) {
  bottom: 15px;
  left: 9px;
  background: var(--blue);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 18px;
  left: 50%;
  display: flex;
  width: min(1160px, calc(100% - 32px));
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 36px rgba(5, 24, 44, 0.12);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand,
.nav,
.hero-actions,
.hero-metrics,
.device-row {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: white;
  font-size: 13px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

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

.brand strong {
  line-height: 1;
}

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

.nav {
  gap: 24px;
  color: rgba(7, 20, 33, 0.74);
  font-size: 14px;
}

.nav a:hover {
  color: var(--blue);
}

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 700;
}

.header-cta {
  padding: 0 18px;
  color: white;
  background: var(--ink);
}

.section,
.section-band {
  position: relative;
  z-index: 2;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.section-band {
  padding: 96px max(20px, calc((100vw - 1120px) / 2));
}

.hero {
  min-height: 760px;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding-top: 160px;
  color: white;
  background: #071421;
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(4, 13, 23, 0.88), rgba(4, 13, 23, 0.46) 46%, rgba(4, 13, 23, 0.1)),
    linear-gradient(0deg, rgba(4, 13, 23, 0.72), transparent 46%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(58px, 8vw, 112px);
  line-height: 0.9;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 58px);
  line-height: 1.05;
}

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

p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.hero-copy {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
}

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

.primary-button {
  padding: 0 24px;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 18px 34px rgba(23, 105, 255, 0.22);
}

.secondary-button {
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  color: white;
  background: rgba(255, 255, 255, 0.08);
}

.hero-metrics {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.hero-metrics span {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.hero-metrics strong {
  margin-right: 6px;
  color: white;
}

.intro {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 58px;
  align-items: start;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.device-showcase {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.device-card {
  position: relative;
  min-height: 380px;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.64)),
    radial-gradient(circle at 50% 0%, rgba(34, 199, 217, 0.18), transparent 45%);
  box-shadow: var(--shadow);
  transition:
    opacity 520ms ease,
    transform 220ms ease,
    box-shadow 220ms ease;
}

.device-card::after {
  content: "";
  position: absolute;
  inset: auto 24px 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(23, 105, 255, 0.42), transparent);
}

.device-card:hover {
  box-shadow: 0 24px 58px rgba(10, 35, 58, 0.18);
}

.device-card p {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.device-card h3 {
  font-size: 28px;
}

.device-card strong {
  display: block;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.device-visual {
  position: relative;
  width: 100%;
  height: 178px;
  margin-bottom: 30px;
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.14)),
    radial-gradient(circle at 50% 60%, rgba(34, 199, 217, 0.22), transparent 48%);
}

.device-visual span {
  position: absolute;
  display: block;
}

.vision .lens {
  top: 62px;
  width: 82px;
  height: 48px;
  border-radius: 48% 48% 42% 42%;
  background: linear-gradient(135deg, #eef6ff, #b7d4ec 58%, #6e879e);
  box-shadow: inset 0 0 18px rgba(255, 255, 255, 0.8);
}

.vision .lens.left {
  left: calc(50% - 88px);
}

.vision .lens.right {
  right: calc(50% - 88px);
}

.vision .strap {
  top: 76px;
  left: calc(50% - 120px);
  width: 240px;
  height: 28px;
  border-radius: 999px;
  border: 7px solid rgba(7, 20, 33, 0.16);
}

.galaxy .visor {
  top: 58px;
  left: 50%;
  width: 230px;
  height: 72px;
  border-radius: 42px;
  background: linear-gradient(135deg, #d7f9ff, #5dbdd2 60%, #174967);
  transform: translateX(-50%);
  box-shadow: inset 0 0 24px rgba(255, 255, 255, 0.7);
}

.galaxy .bridge {
  top: 87px;
  left: 50%;
  width: 48px;
  height: 16px;
  border-radius: 999px;
  background: rgba(7, 20, 33, 0.28);
  transform: translateX(-50%);
}

.galaxy .signal {
  top: 36px;
  right: 54px;
  width: 38px;
  height: 38px;
  border: 2px solid var(--mint);
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
}

.aura .glass {
  top: 70px;
  width: 78px;
  height: 52px;
  border: 8px solid rgba(7, 20, 33, 0.56);
  border-radius: 28px;
  background: rgba(34, 199, 217, 0.12);
}

.aura .glass.left {
  left: calc(50% - 92px);
}

.aura .glass.right {
  right: calc(50% - 92px);
}

.aura .temple {
  top: 93px;
  left: calc(50% - 30px);
  width: 60px;
  height: 7px;
  border-radius: 999px;
  background: rgba(7, 20, 33, 0.56);
}

.feature-card,
.step {
  transition:
    opacity 520ms ease,
    transform 220ms ease,
    box-shadow 220ms ease;
}

.feature-card:hover,
.step:hover {
  box-shadow: 0 24px 58px rgba(10, 35, 58, 0.18);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card,
.step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
}

.feature-card {
  min-height: 260px;
  padding: 28px;
}

.feature-card p,
.step p,
.platform-copy p,
.contact p,
.trust-list p {
  margin-bottom: 0;
}

.icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 32px;
  border-radius: 50%;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  background: rgba(23, 105, 255, 0.1);
}

.platforms,
.trust {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  color: white;
  background:
    radial-gradient(circle at 82% 18%, rgba(94, 230, 182, 0.28), transparent 24%),
    linear-gradient(135deg, #09243d, #0e4f74 56%, #1769ff);
}

.platforms p,
.trust p {
  color: rgba(255, 255, 255, 0.78);
}

.platforms .eyebrow,
.trust .eyebrow {
  color: var(--mint);
}

.device-panel {
  display: grid;
  gap: 12px;
}

.device-row {
  justify-content: space-between;
  gap: 18px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.device-row span {
  font-size: 22px;
  font-weight: 800;
}

.device-row strong {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  text-align: right;
}

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

.step {
  padding: 24px;
}

.step span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 50%;
  color: white;
  font-weight: 800;
  background: var(--navy);
}

.trust {
  align-items: start;
}

.trust-list {
  display: grid;
  gap: 16px;
}

.trust-list p {
  padding: 18px 20px;
  border-left: 3px solid var(--mint);
  background: rgba(255, 255, 255, 0.1);
}

.trust-list strong {
  color: white;
}

.contact {
  max-width: 840px;
  text-align: center;
}

.contact .primary-button {
  margin-top: 20px;
}

.site-footer {
  display: flex;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  justify-content: space-between;
  gap: 18px;
  padding: 30px 0 44px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header {
    top: 10px;
    border-radius: 20px;
  }

  .nav {
    display: none;
  }

  .header-cta {
    padding: 0 14px;
    font-size: 13px;
  }

  .hero {
    min-height: 720px;
    padding-top: 124px;
  }

  .hero-scrim {
    background: linear-gradient(0deg, rgba(4, 13, 23, 0.88), rgba(4, 13, 23, 0.5));
  }

  .intro,
  .platforms,
  .trust {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .device-showcase,
  .timeline {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: auto;
  }

  .device-card {
    min-height: auto;
  }

  .device-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .device-row strong {
    text-align: left;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .loader-orbit {
    animation: none;
  }

  .feature-card,
  .step,
  .device-card,
  .loader {
    transition: none;
  }
}

@media (max-width: 520px) {
  .brand small {
    display: none;
  }

  .section,
  .section-band {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  h1 {
    font-size: 56px;
  }

  .hero-copy {
    font-size: 18px;
  }
}