:root {
  --bg: #050608;
  --bg-elevated: #0d1117;
  --card: rgba(14, 18, 24, 0.86);
  --line: rgba(140, 220, 255, 0.16);
  --line-strong: rgba(140, 220, 255, 0.32);
  --text: #f5f7fb;
  --muted: #b5c0ce;
  --accent: #5cc5fa;
  --accent-soft: rgba(92, 197, 250, 0.14);
  --glow: rgba(92, 197, 250, 0.32);
  --gold: #f4c64c;
  --max-width: 1180px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(92, 197, 250, 0.15), transparent 30%),
    radial-gradient(circle at 10% 20%, rgba(126, 110, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #030406 0%, #070b10 45%, #040507 100%);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.page-shell {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 24px 20px 80px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 4px 0 36px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(18px);
  background: rgba(4, 8, 12, 0.72);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 18px 40px rgba(0, 0, 0, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.button:hover,
.button:focus-visible {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 84px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 700;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.02;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(3.2rem, 7vw, 5.8rem);
}

.subtitle {
  margin: 14px 0 0;
  color: var(--gold);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.intro {
  margin: 24px 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.12rem;
}

.promo-card,
.benefits-panel,
.metadata-card,
.feature-card,
.legal-body,
.contact-card {
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
}

.promo-card {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(92, 197, 250, 0.16), rgba(10, 14, 20, 0.9)),
    var(--card);
}

.promo-label {
  margin: 0 0 8px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.promo-text {
  margin: 0;
  font-size: 1.03rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 140ms ease, color 140ms ease, border-color 140ms ease, background 140ms ease;
}

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

.button-primary {
  background: var(--accent);
  color: #041019;
  box-shadow: 0 14px 40px var(--glow);
}

.button-secondary {
  border: 1px solid var(--line-strong);
  background: rgba(8, 12, 16, 0.7);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.hero-meta li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(8, 11, 15, 0.72);
  color: var(--muted);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.device-frame {
  position: relative;
  width: min(100%, 420px);
  padding: 18px;
  border-radius: 38px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02)),
    rgba(8, 12, 18, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 38px 90px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.02);
}

.device-frame::before {
  content: "";
  position: absolute;
  inset: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(92, 197, 250, 0.1), rgba(0, 0, 0, 0.08));
  filter: blur(30px);
  z-index: 0;
}

.device-art {
  position: relative;
  z-index: 1;
  border-radius: 24px;
}

.section {
  margin-bottom: 78px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.feature-grid,
.metadata-grid,
.contact-grid {
  display: grid;
  gap: 18px;
}

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

.metadata-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
}

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

.feature-card,
.metadata-card,
.contact-card {
  padding: 22px;
  border-radius: var(--radius-md);
}

.feature-card h3,
.metadata-card h3,
.benefits-panel h3,
.long-copy h3,
.contact-card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.feature-card p,
.metadata-card p,
.contact-card p,
.contact-card li,
.long-copy p,
.benefits-panel li,
.legal-body p {
  margin: 0;
  color: var(--muted);
}

.benefits-panel,
.long-copy,
.legal-body {
  padding: 24px;
  border-radius: var(--radius-md);
}

.benefits-panel {
  margin-top: 18px;
}

.benefits-panel ul,
.contact-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.long-copy {
  background: linear-gradient(180deg, rgba(92, 197, 250, 0.05), rgba(10, 14, 20, 0.88));
}

.legal-section .legal-body p + p {
  margin-top: 14px;
}

.site-footer {
  padding: 30px 0 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 0.94rem;
}

@media (max-width: 980px) {
  .site-header,
  .hero {
    grid-template-columns: 1fr;
  }

  .site-header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
    border-radius: 26px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero-meta,
  .feature-grid,
  .metadata-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding-inline: 14px;
  }

  .site-header {
    padding: 16px;
  }

  .hero {
    gap: 24px;
    margin-bottom: 64px;
  }

  .brand {
    align-items: flex-start;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}