:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b10;
  color: #f6fbff;
  --panel: rgba(10, 18, 29, 0.76);
  --line: rgba(125, 225, 255, 0.22);
  --cyan: #45d8ff;
  --green: #7df8b8;
  --text-soft: #aab8c8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(69, 216, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 216, 255, 0.07) 1px, transparent 1px),
    radial-gradient(circle at 18% 20%, rgba(69, 216, 255, 0.24), transparent 28rem),
    radial-gradient(circle at 82% 24%, rgba(125, 248, 184, 0.15), transparent 24rem),
    linear-gradient(135deg, #070a0f 0%, #101722 52%, #090d13 100%);
  background-size: 56px 56px, 56px 56px, auto, auto, auto;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(115deg, transparent 0 38%, rgba(69, 216, 255, 0.16) 38.3% 38.8%, transparent 39%),
    linear-gradient(245deg, transparent 0 61%, rgba(125, 248, 184, 0.11) 61.2% 61.7%, transparent 62%);
}

.page-shell {
  min-height: 100vh;
  padding: 28px clamp(18px, 4vw, 64px);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
  z-index: 2;
}

.site-header::before {
  position: absolute;
  top: 50%;
  left: -18px;
  width: clamp(300px, 34vw, 430px);
  height: 120px;
  content: "";
  background:
    radial-gradient(ellipse at 26% 50%, rgba(255, 255, 255, 0.16), transparent 62%),
    radial-gradient(ellipse at 50% 50%, rgba(69, 216, 255, 0.12), transparent 68%);
  filter: blur(4px);
  pointer-events: none;
  transform: translateY(-50%);
}

.brand {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: clamp(245px, 29vw, 361px);
  text-decoration: none;
}

.brand img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 14px rgba(69, 216, 255, 0.24));
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 12, 19, 0.62);
  backdrop-filter: blur(12px);
}

.language-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  font-size: 1.35rem;
  line-height: 1;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.language-button:hover,
.language-button:focus-visible {
  transform: translateY(-1px);
  outline: none;
  background: rgba(69, 216, 255, 0.12);
}

.language-button.is-active {
  background: rgba(69, 216, 255, 0.18);
  box-shadow: inset 0 0 0 1px rgba(125, 248, 184, 0.38), 0 0 22px rgba(69, 216, 255, 0.2);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(38px, 7vw, 92px);
  align-items: center;
  min-height: calc(100vh - 100px);
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: clamp(0.82rem, 1.4vw, 0.95rem);
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(4.5rem, 11vw, 10rem);
  font-weight: 850;
  letter-spacing: 0;
  line-height: 0.92;
  text-shadow: 0 0 44px rgba(69, 216, 255, 0.28);
}

.lead {
  max-width: 650px;
  margin: 26px 0 0;
  color: var(--text-soft);
  font-size: clamp(1.04rem, 2vw, 1.35rem);
  line-height: 1.7;
}

.signal-panel {
  position: relative;
  min-height: 430px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(69, 216, 255, 0.1), transparent 38%),
    var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.signal-panel::before {
  position: absolute;
  inset: 34px;
  content: "";
  border: 1px solid rgba(125, 248, 184, 0.2);
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(69, 216, 255, 0.28) 50%, transparent 51%),
    linear-gradient(transparent 49%, rgba(69, 216, 255, 0.2) 50%, transparent 51%);
  background-size: 74px 74px;
}

.signal-panel::after {
  position: absolute;
  left: 18%;
  right: 18%;
  top: 50%;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--cyan), var(--green), transparent);
  box-shadow: 0 0 24px rgba(69, 216, 255, 0.55);
}

.signal-grid {
  position: absolute;
  inset: 72px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.signal-grid span {
  border: 1px solid rgba(69, 216, 255, 0.18);
  border-radius: 8px;
  background: rgba(69, 216, 255, 0.04);
}

.signal-grid span:nth-child(2n) {
  background: rgba(125, 248, 184, 0.06);
}

.status-line {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 14px;
  border: 1px solid rgba(125, 248, 184, 0.22);
  border-radius: 8px;
  background: rgba(5, 10, 16, 0.78);
  color: #d9fff0;
  font-size: 0.92rem;
  font-weight: 700;
}

.pulse {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
}

@media (max-width: 840px) {
  .page-shell {
    padding: 20px 16px;
  }

  .site-header {
    align-items: flex-start;
  }

  .brand {
    width: clamp(232px, 74.6vw, 314px);
  }

  .hero {
    grid-template-columns: 1fr;
    align-content: start;
    gap: 32px;
    min-height: auto;
    padding: 86px 0 32px;
  }

  h1 {
    font-size: clamp(4rem, 22vw, 6.5rem);
  }

  .signal-panel {
    min-height: 300px;
  }

  .signal-grid {
    inset: 46px 34px 82px;
    gap: 12px;
  }
}