:root {
  color-scheme: dark;
  --bg: #07101d;
  --panel: rgba(17, 30, 49, 0.72);
  --panel-strong: #102139;
  --line: rgba(150, 178, 211, 0.17);
  --text: #f4f8ff;
  --muted: #9fb0c6;
  --accent: #55e5b6;
  --accent-blue: #5caeff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 85% 10%, rgba(49, 130, 206, 0.17), transparent 32rem),
    radial-gradient(circle at 8% 48%, rgba(65, 224, 174, 0.09), transparent 29rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

a {
  color: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(85, 229, 182, 0.45);
  border-radius: 11px;
  background: linear-gradient(145deg, rgba(85, 229, 182, 0.18), rgba(92, 174, 255, 0.08));
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.03em;
  box-shadow: inset 0 0 24px rgba(85, 229, 182, 0.08);
}

.brand-name {
  font-size: 17px;
  letter-spacing: -0.02em;
}

.brand-name strong {
  color: var(--accent);
}

.header-label,
.eyebrow {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
  align-items: center;
  gap: 74px;
  min-height: 650px;
  padding: 72px 0 86px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
}

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

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(46px, 6.8vw, 82px);
  font-weight: 690;
  letter-spacing: -0.055em;
  line-height: 0.99;
}

.hero-text {
  max-width: 610px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  min-height: 49px;
  padding: 0 24px;
  border: 1px solid rgba(85, 229, 182, 0.3);
  border-radius: 13px;
  background: var(--accent);
  color: #062118;
  font-size: 14px;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(85, 229, 182, 0.2);
}

.service-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 13px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(85, 229, 182, 0.1), 0 0 16px rgba(85, 229, 182, 0.75);
}

.signal-card {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(155deg, rgba(21, 43, 70, 0.88), rgba(7, 16, 29, 0.75)),
    var(--panel);
  box-shadow: var(--shadow);
}

.signal-card::after {
  position: absolute;
  inset: auto -20% -52% 20%;
  height: 330px;
  border-radius: 50%;
  background: rgba(85, 229, 182, 0.14);
  filter: blur(65px);
  content: "";
}

.signal-card-top,
.signal-meta {
  position: absolute;
  z-index: 2;
  right: 28px;
  left: 28px;
  display: flex;
  justify-content: space-between;
  color: rgba(214, 228, 245, 0.55);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.signal-card-top {
  top: 25px;
}

.signal-meta {
  bottom: 24px;
}

.signal-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.signal-meta i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.network-orbit {
  position: absolute;
  inset: 54px 22px;
  display: grid;
  place-items: center;
}

.orbit,
.core {
  position: absolute;
  border-radius: 50%;
}

.orbit {
  border: 1px solid rgba(135, 179, 221, 0.22);
}

.orbit::before,
.orbit::after {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 13px rgba(92, 174, 255, 0.9);
  content: "";
}

.orbit-one {
  width: 268px;
  height: 268px;
}

.orbit-one::before {
  top: 28px;
  right: 35px;
}

.orbit-one::after {
  bottom: 40px;
  left: 24px;
  background: var(--accent);
}

.orbit-two {
  width: 190px;
  height: 190px;
  transform: rotate(28deg);
}

.orbit-two::before {
  top: 3px;
  left: 72px;
  background: var(--accent);
}

.orbit-two::after {
  right: 3px;
  bottom: 72px;
}

.orbit-three {
  width: 110px;
  height: 110px;
  border-color: rgba(85, 229, 182, 0.32);
}

.core {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(85, 229, 182, 0.5);
  background: rgba(85, 229, 182, 0.08);
  box-shadow: 0 0 48px rgba(85, 229, 182, 0.16);
}

.core i {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 22px rgba(85, 229, 182, 0.9);
}

.platform {
  padding: 88px 0 100px;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 38px;
}

.section-heading h2,
.service-note h2 {
  max-width: 620px;
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 47px);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

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

.feature-card {
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  backdrop-filter: blur(12px);
}

.feature-number {
  display: block;
  margin-bottom: 54px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.service-note {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-bottom: 82px;
  padding: 46px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(120deg, rgba(17, 39, 61, 0.9), rgba(9, 22, 38, 0.75));
}

.service-note > p {
  align-self: end;
  margin-bottom: 3px;
  color: var(--muted);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 28px 0 38px;
  border-top: 1px solid var(--line);
  color: #74859a;
  font-size: 12px;
}

@media (max-width: 840px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 44px;
    padding-top: 64px;
  }

  .signal-card {
    min-height: 380px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

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

  .feature-number {
    margin-bottom: 34px;
  }

  .service-note {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 76px;
  }

  .header-label {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 54px 0 72px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 62px);
  }

  .signal-card {
    min-height: 330px;
    border-radius: 22px;
  }

  .orbit-one {
    width: 230px;
    height: 230px;
  }

  .orbit-two {
    width: 164px;
    height: 164px;
  }

  .platform {
    padding: 68px 0 74px;
  }

  .service-note {
    margin-bottom: 58px;
    padding: 28px;
  }

  .site-footer {
    flex-direction: column;
    gap: 6px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}