:root {
  --bg: #0b1220;
  --text: #0f172a;
  --muted: #475569;
  --card: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 10px 30px rgba(2,6,23,0.08);
  --primary: #0f172a;
  --primaryText: #ffffff;
}
h1, h2, h3 {
  letter-spacing: -0.015em;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 20% -10%, #e2e8f0 0%, transparent 60%),
    radial-gradient(800px 400px at 90% 10%, #e0e7ff 0%, transparent 55%),
    #f8fafc;
}


.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 18px;
}

.topbar {
  position: sticky;
  top: 0;
  background: rgba(248,250,252,0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
}

.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.nav a {
  text-decoration: none;
  color: var(--muted);
  margin-left: 14px;
  font-weight: 600;
  font-size: 14px;
}
.nav a:hover { color: var(--text); }
.nav .cta {
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--primaryText);
}

.hero { padding: 44px 0 10px; }
.hero h1 {
  font-size: 46px;
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.03em;
}

.lede { margin-top: 14px; font-size: 18px; color: var(--muted); max-width: 70ch; }

.hero-actions { margin-top: 20px; display: flex; gap: 12px; flex-wrap: wrap; }

.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: white;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(2,6,23,0.08);
}

.button.primary {
  background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
  color: var(--primaryText);
  border-color: #020617;
}

.pill-row { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.pill {
  font-size: 13px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 999px;
  background: #e2e8f0;
  color: #0f172a;
}

.grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 12px 30px rgba(2,6,23,0.08);
}

.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); line-height: 1.5; }

.callout {
  margin: 26px 0 60px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  box-shadow: var(--shadow);
}
.callout h2 { margin: 0 0 6px; }
.muted { color: var(--muted); }

.prose {
  padding: 40px 0 70px;
  max-width: 68ch;
}
.prose h1 {
  font-size: 34px;
  margin-bottom: 12px;
}
.prose p, .prose li {
  color: var(--muted);
  line-height: 1.75;
  font-size: 17px;
}

.prose h2 { margin-top: 22px; }
.prose code { background: #e2e8f0; padding: 2px 6px; border-radius: 8px; color: #0f172a; }

.footer { border-top: 1px solid var(--border); padding: 22px 0; }

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .callout { flex-direction: column; align-items: flex-start; }
}
@media (hover: hover) {
  .card:hover {
    transform: translateY(-2px);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 16px 40px rgba(2,6,23,0.12);
  }
}