:root {
  --bg0: #050a14;
  --bg1: #081226;
  --line: rgba(148, 163, 184, 0.22);
  --text: #e2e8f0;
  --muted: rgba(226, 232, 240, 0.72);
  --accent: #38bdf8;
  --accent2: #a5f3fc;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 600px at 18% 20%, rgba(56, 189, 248, 0.22), transparent 55%),
    radial-gradient(900px 600px at 88% 10%, rgba(165, 243, 252, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

a { color: var(--accent); }

.wrap {
  width: min(1060px, calc(100% - 32px));
  margin: 0 auto;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(5, 10, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  gap: 12px;
}

.nav-link {
  color: rgba(226, 232, 240, 0.85);
  text-decoration: none;
  border: 1px solid transparent;
  padding: 7px 10px;
  border-radius: 10px;
}

.nav-link:hover {
  border-color: var(--line);
  color: #fff;
}

.hero {
  padding: 60px 0 24px;
}

.hero-title {
  margin: 0 0 10px;
  font-size: clamp(2rem, 5vw, 3.1rem);
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.55;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 12px;
  padding: 10px 14px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.18);
  color: #e0f2fe;
  font-weight: 700;
}

.btn:hover {
  border-color: rgba(56, 189, 248, 0.7);
  background: rgba(56, 189, 248, 0.26);
}

.btn-ghost {
  border-color: var(--line);
  background: rgba(2, 6, 23, 0.35);
  color: rgba(226, 232, 240, 0.9);
}

.btn-ghost:hover {
  background: rgba(2, 6, 23, 0.5);
  border-color: rgba(148, 163, 184, 0.38);
  color: #fff;
}

.card {
  border: 1px solid var(--line);
  background: rgba(2, 6, 23, 0.35);
  border-radius: 16px;
  padding: 16px;
  margin: 18px 0 60px;
}

.card-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.card-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

@media (max-width: 680px) {
  .hero { padding-top: 44px; }
}