:root {
  --bg: #0b1220;
  --bg-alt: #111a2e;
  --text: #e7ecf5;
  --muted: #93a1b8;
  --accent: #4f8cff;
  --accent-2: #35d0a0;
  --card-border: #1f2b45;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top left, var(--bg-alt), var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 64px 24px 40px;
}

.hero {
  text-align: center;
  margin-bottom: 56px;
}

.badge {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--accent-2);
  background: rgba(53, 208, 160, 0.12);
  border: 1px solid rgba(53, 208, 160, 0.35);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin: 0 0 12px;
  font-weight: 700;
}

.hero h1 span {
  color: var(--accent);
  font-weight: 600;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 28px;
}

.cta-row {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 11px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform .15s ease, opacity .15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--card-border);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 40px;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px;
}

.card h2 {
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0 0 14px;
}

.card code {
  font-size: 0.8rem;
  color: var(--accent-2);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 8px;
  border-radius: 6px;
}

.footnote {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 40px;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--card-border);
  padding-top: 20px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7fb;
    --bg-alt: #ffffff;
    --text: #1a2233;
    --muted: #5b6577;
    --card-border: #e3e7ef;
  }
}