:root {
  color-scheme: dark;
  --bg: #071019;
  --panel: rgba(12, 25, 38, 0.86);
  --panel-strong: rgba(20, 43, 60, 0.94);
  --line: rgba(140, 211, 255, 0.18);
  --text: #eef8ff;
  --muted: #9fb6c8;
  --cyan: #37d7ff;
  --green: #78f0b4;
  --yellow: #f8dc6a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 12%, rgba(55, 215, 255, 0.14), transparent 28rem),
    radial-gradient(circle at 78% 4%, rgba(120, 240, 180, 0.12), transparent 24rem),
    linear-gradient(160deg, #050912 0%, var(--bg) 45%, #0a1820 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1.25rem, 4vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 9, 18, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid rgba(55, 215, 255, 0.45);
  border-radius: 0.7rem;
  background: linear-gradient(145deg, rgba(55, 215, 255, 0.18), rgba(120, 240, 180, 0.12));
  color: var(--cyan);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a {
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, 0.75fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  min-height: calc(100vh - 5rem);
  padding: clamp(3rem, 7vw, 7rem) clamp(1.25rem, 4vw, 4rem);
}

.hero h1,
.page h1 {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(3.25rem, 9vw, 7.5rem);
  line-height: 0.94;
  letter-spacing: 0;
}

.hero p,
.lead {
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  text-decoration: none;
  font-weight: 750;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #041018;
}

.signal-panel,
.card,
.doc {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

.signal-panel {
  padding: 1.2rem;
}

.status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

.status-row:last-child {
  border-bottom: 0;
}

.status-row span {
  color: var(--muted);
}

.status-row strong {
  color: var(--green);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 clamp(1.25rem, 4vw, 4rem) 4rem;
}

.card {
  padding: 1.35rem;
}

.card h2,
.doc h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.card p,
.doc p,
.doc li {
  color: var(--muted);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) 1.25rem;
}

.doc {
  margin-top: 2rem;
  padding: clamp(1.25rem, 4vw, 2.4rem);
}

.doc h1 {
  font-size: clamp(2.4rem, 7vw, 4.5rem);
}

.doc h2 {
  margin-top: 2rem;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.footer {
  padding: 2rem clamp(1.25rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.legal-info {
  display: grid;
  gap: 0.25rem;
  margin-top: 1rem;
  font-style: normal;
  line-height: 1.6;
}

@media (max-width: 780px) {
  .site-header,
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .grid,
  .contact-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}