/* Color system */
:root {
  --bg: #0b0f17;
  --panel: #111827;
  --panel-alt: #0f172a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --brand: #3b82f6;
  --brand-600: #2563eb;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
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 800px at 20% -10%, #1f2937 0%, #0b0f17 50%, #0b0f17 100%);
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 23, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}
.brand-mark { font-size: 22px; }
.brand-text { font-size: 18px; letter-spacing: 0.2px; }

.nav a, .footer-nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
}
.nav a.active, .nav a:hover, .footer-nav a:hover { color: var(--text); }

.hero {
  padding: 72px 0 32px;
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.12) 0%, rgba(11, 15, 23, 0) 60%);
}
.hero h1 { font-size: 40px; margin: 0 0 10px; }
.lead { color: var(--muted); max-width: 720px; }
.cta-group { margin-top: 22px; display: flex; gap: 12px; }
.btn {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  text-decoration: none;
}
.btn.primary { background: var(--brand); border-color: var(--brand-600); }
.btn.primary:hover { background: var(--brand-600); }

.section { padding: 40px 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)); border-top: 1px solid var(--border); }

.feature-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.feature-list li { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.feature-list h3 { margin: 0 0 6px; font-size: 18px; }
.feature-list p { margin: 0; color: var(--muted); }

.site-footer { border-top: 1px solid var(--border); margin-top: 20px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.site-footer p { margin: 0; color: var(--muted); }

/* Content styles */
.prose {
  max-width: 800px;
}
.prose h1 { font-size: 32px; margin: 0 0 10px; }
.prose h2 { font-size: 22px; margin: 28px 0 10px; }
.prose p, .prose li { color: var(--muted); line-height: 1.7; }
.prose a { color: var(--text); }
.prose ul { padding-left: 20px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
}