:root {
  --bg: #0b0f14;
  --ink: #e9eef5;
  --muted: #9fb3c8;
  --card: #101722;
  --border: #1d283a;
  --accent: #8ad4ff;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 28px 18px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  letter-spacing: .2px;
}

nav a {
  opacity: .9;
  margin-left: 14px;
}

.hero {
  margin: 40px 0 28px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
}

h1 {
  margin: 0 0 6px;
  font-size: clamp(26px, 4vw, 40px);
}

p.lead {
  margin: 0 0 14px;
  color: var(--muted);
}

.links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0f172a;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), #5aa8ff);
  color: #07111b;
  font-weight: 700;
}

section {
  margin: 28px 0;
}

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

.card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

footer {
  margin: 28px 0 6px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

@media (max-width: 820px) {
  .grid {
    grid-template-columns: 1fr;
  }
  header {
    justify-content: center;
  }
  nav {
    width: 100%;
    text-align: center;
    margin-top: 6px;
  }
}