:root {
  --bg: #0a0a0a;
  --bg-elev: #111111;
  --border: #1f1f1f;
  --border-strong: #2a2a2a;
  --fg: #f5f5f5;
  --fg-dim: #a0a0a0;
  --fg-muted: #6b6b6b;
  --accent: #ff6b1a;
  --accent-hover: #ff854a;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  --radius: 8px;
  --max: 960px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--fg); text-decoration: none; }
a:hover { color: var(--accent); }
code { font-family: var(--mono); font-size: 0.92em; }

/* ---------- Header ---------- */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 8px;
}
.logo-mark { font-size: 1.1rem; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--fg-dim); font-size: 0.95rem; }
.nav-links a:hover { color: var(--fg); }

/* ---------- Layout ---------- */
main { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }

/* ---------- Hero ---------- */
.hero { padding-top: 120px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-dim);
  padding: 6px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  margin-bottom: 32px;
}
h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0 0 24px;
}
.accent { color: var(--accent); }
.sub {
  font-size: 1.15rem;
  color: var(--fg-dim);
  max-width: 560px;
  margin: 0 auto 40px;
}

/* ---------- Install bar ---------- */
.install {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 10px 10px 10px 20px;
  margin-bottom: 32px;
  font-family: var(--mono);
  font-size: 0.95rem;
}
.install code {
  color: var(--fg);
  padding-right: 12px;
}
.install code::before { content: "$ "; color: var(--fg-muted); }
.copy-btn {
  background: transparent;
  color: var(--fg-dim);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.copy-btn:hover {
  color: var(--fg);
  border-color: var(--fg-muted);
}
.copy-btn.copied { color: var(--accent); border-color: var(--accent); }

/* ---------- Buttons ---------- */
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #0a0a0a;
}
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--fg-muted);
  color: var(--fg);
}

/* ---------- Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--border);
}
.feature {
  padding: 8px 0;
}
.feature h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.feature p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature code {
  background: var(--bg-elev);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--fg);
}

/* ---------- Usage ---------- */
.usage { border-top: 1px solid var(--border); }
.usage-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.usage h2 {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
}
.usage pre {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 24px 28px;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.7;
  text-align: left;
  overflow-x: auto;
  margin: 0 0 20px;
}
.usage pre code { color: var(--fg); }
.prompt { color: var(--accent); user-select: none; margin-right: 8px; }
.dim { color: var(--fg-muted); }
.str { color: #a3d68a; }
.usage-note {
  color: var(--fg-dim);
  font-size: 0.95rem;
  margin: 0;
}
.usage-note code {
  background: var(--bg-elev);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--fg);
}

/* ---------- Bottom CTA ---------- */
.cta-bottom {
  border-top: 1px solid var(--border);
  text-align: center;
}
.cta-bottom h2 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 24px 32px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 12px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 6px; }
.footer-col a { color: var(--fg-dim); font-size: 0.95rem; }
.footer-col a:hover { color: var(--fg); }
.copy {
  max-width: var(--max);
  margin: 24px auto 0;
  color: var(--fg-muted);
  font-size: 0.85rem;
  text-align: center;
}
.copy a { color: var(--fg-muted); }
.copy a:hover { color: var(--fg-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  section { padding: 72px 0; }
  .hero { padding-top: 80px; }
  .features { grid-template-columns: 1fr; gap: 32px; }
  .nav-links { gap: 20px; }
  .nav-links a:nth-child(2) { display: none; }
  .install { flex-direction: column; gap: 10px; padding: 14px; width: 100%; max-width: 360px; }
  .install code { padding-right: 0; }
  .usage pre { padding: 18px; font-size: 0.82rem; }
}