:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #11161d;
  --ink: #f0f3f6;
  --ink-dim: #9aa5b1;
  --ink-faint: #6b7585;
  --hair: #232a33;
  --accent: #3ddc84;
  --accent-dim: #2bb56a;
  --radius: 10px;
  --container: 1100px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color 120ms; }
a:hover { color: var(--ink); }

code, pre {
  font-family: var(--font-mono);
}
code {
  font-size: 0.88em;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--hair);
  padding: 0.08em 0.4em;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 600;
}
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(61, 220, 132, 0.5);
}
.brand-name { font-family: var(--font-mono); font-size: 14px; }
.brand-name span { color: var(--ink-faint); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--ink-dim); font-size: 14px; }
.nav-links a:hover { color: var(--accent); }

/* === HERO === */
.hero {
  padding: 84px 0 64px;
  border-bottom: 1px solid var(--hair);
  background:
    radial-gradient(60% 120% at 85% 0%, rgba(61, 220, 132, 0.10), transparent 60%),
    var(--bg);
}
.hero-meta { display: flex; gap: 10px; margin-bottom: 22px; }
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  padding: 3px 11px;
}
.tag-muted { color: var(--ink-dim); border-color: var(--hair); }
.hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 18ch;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.lede {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--ink-dim);
  max-width: 60ch;
  margin: 0 0 30px;
}
.lede code { font-size: 0.86em; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 52px; }
.btn {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 100ms, background 120ms, border-color 120ms;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #07140c; }
.btn-primary:hover { background: #4ee895; color: #07140c; }
.btn-ghost { border-color: var(--hair); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent-dim); color: var(--accent); }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat { background: var(--panel); padding: 22px 20px; }
.stat-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  margin-bottom: 12px;
}
.stat-value { font-size: 2.4rem; font-weight: 600; letter-spacing: -0.02em; }
.stat-unit { color: var(--ink-dim); font-size: 1.4rem; }
.stat-label { font-size: 13px; color: var(--ink-dim); margin-top: 4px; }

/* === SECTIONS === */
.section { padding: 64px 0; border-bottom: 1px solid var(--hair); }
.section-head { margin-bottom: 36px; max-width: 70ch; }
.section-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 10px 0 8px;
}
.section-sub { color: var(--ink-dim); margin: 0; }

/* === FEATURES === */
.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: rgba(61, 220, 132, 0.12);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
  margin-bottom: 14px;
}
.feature-card h3 { font-size: 1.05rem; margin: 0 0 8px; }
.feature-card p { color: var(--ink-dim); margin: 0; font-size: 14px; }

/* === CATALOG === */
.catalog {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.catalog-group {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 22px;
}
.catalog-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 14px; }
.catalog-num { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.catalog-head h3 { font-size: 1.05rem; margin: 0; }
.catalog-group ul { list-style: none; margin: 0; padding: 0; }
.catalog-group li {
  padding: 11px 0;
  border-top: 1px solid var(--hair);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.catalog-group li:first-child { border-top: none; padding-top: 0; }
.catalog-group li code {
  align-self: flex-start;
  background: var(--panel-2);
  color: var(--accent);
}
.catalog-group li span { font-size: 13px; color: var(--ink-dim); }
.catalog-group li span em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-faint);
}
.catalog-note {
  margin: 24px 0 0;
  padding: 16px 18px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--ink-dim);
}

/* === CODE BLOCK === */
.codeblock {
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}
.codeblock-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--hair);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
}
.codeblock pre {
  margin: 0;
  padding: 18px 16px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
}
.codeblock code {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
}
.install-prereqs { margin: 18px 0 0; font-size: 13px; color: var(--ink-dim); }

/* === FOOTER === */
.footer {
  padding: 36px 0;
  background: var(--panel-2);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer p { margin: 0; color: var(--ink-dim); font-size: 13px; max-width: 65ch; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--ink-dim); font-size: 13px; }
.footer-links a:hover { color: var(--accent); }

/* === RESPONSIVE === */
@media (max-width: 720px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.nav-github) { display: none; }
  .stats { grid-template-columns: 1fr; }
  .features,
  .catalog { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 48px 0; }
}