:root {
  --bg: #F6F7F9;
  --panel: #FFFFFF;
  --ink: #0B1220;
  --ink-soft: #334155;
  --muted: #64748B;
  --line: #E2E8F0;
  --accent: #1E40AF;
  --accent-hi: #3B82F6;
  --rail: #0F172A;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1220;
    --panel: #111827;
    --ink: #F1F5F9;
    --ink-soft: #CBD5E1;
    --muted: #94A3B8;
    --line: #1F2937;
    --accent: #60A5FA;
    --accent-hi: #93C5FD;
    --rail: #0B1220;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); }

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600; color: var(--ink);
  font-family: 'JetBrains Mono', monospace; font-size: 15px;
}
.site-header nav { display: flex; align-items: center; gap: 26px; }
.site-header nav a { color: var(--ink-soft); font-size: 14px; font-weight: 500; }
.site-header nav a.btn { padding: 8px 16px; border-radius: 6px; background: var(--accent); color: white; }

main { max-width: 1120px; margin: 0 auto; padding: 72px 40px; }

.hero { max-width: 720px; }
.eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 16px; }
h1 { font-size: 48px; line-height: 1.1; margin: 0 0 20px; letter-spacing: -0.02em; }
.lede { font-size: 18px; color: var(--ink-soft); margin: 0 0 32px; }

.cta-row { display: flex; gap: 12px; }
.btn { display: inline-flex; align-items: center; padding: 11px 20px; border-radius: 6px; font-weight: 500; font-size: 14px; border: 1px solid transparent; }
.btn.primary { background: var(--accent); color: white; }
.btn.primary:hover { background: var(--accent-hi); color: white; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 80px; padding-top: 48px; border-top: 1px solid var(--line);
}
.pillars article {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 24px;
}
.pillars h3 { margin: 0 0 10px; font-size: 16px; font-family: 'JetBrains Mono', monospace; }
.pillars p { margin: 0; color: var(--ink-soft); font-size: 14px; }

footer {
  margin-top: 96px; padding: 40px;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px;
  background: var(--rail); color: #94A3B8;
}
footer .col { display: flex; flex-direction: column; gap: 8px; }
footer a { color: #94A3B8; font-size: 14px; }
footer a:hover { color: #E6EDF7; }
.brand-footer { font-family: 'JetBrains Mono', monospace; color: white; margin: 0; font-weight: 600; }
.fine { font-size: 13px; margin: 4px 0 0; }

@media (max-width: 760px) {
  h1 { font-size: 32px; }
  .pillars { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; }
  .site-header { padding: 14px 20px; }
  main { padding: 48px 20px; }
}