:root {
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --text: #1A1A1F;
  --muted: #6B6B73;
  --line: #ECECE8;
  --pill: #18181B;
  --grad: linear-gradient(90deg, #7C3AED, #2563EB, #16A34A);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
.grad-bar { height: 4px; width: 100%; background: var(--grad); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }

header { padding: 26px 0 14px; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -0.02em; font-size: 17px; text-decoration: none; color: inherit; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--pill); color: #fff;
  display: grid; place-items: center; font-family: 'JetBrains Mono', monospace; font-weight: 500; font-size: 15px; flex: none;
}
.back {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--muted);
  text-decoration: none; transition: color .2s;
}
.back:hover { color: var(--text); }

main { padding: 40px 0 30px; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 16px;
  display: inline-flex; align-items: center; gap: 9px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--grad); border-radius: 2px; }

h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.08; letter-spacing: -0.03em; font-weight: 800; margin-bottom: 32px; }
h2 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin: 34px 0 10px; }
h3 { font-size: 15px; font-weight: 700; margin: 22px 0 6px; }
p { margin-bottom: 12px; color: var(--text); }
p.muted, .muted { color: var(--muted); }
ul { margin: 8px 0 14px 20px; }
li { margin-bottom: 5px; }
a { color: #2563EB; text-decoration: none; }
a:hover { text-decoration: underline; }
strong { font-weight: 700; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 22px 24px; margin: 16px 0;
}
.mono { font-family: 'JetBrains Mono', monospace; font-size: 13.5px; }

footer {
  margin-top: 48px; border-top: 1px solid var(--line); padding: 28px 0 56px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--muted);
}
footer a { color: var(--muted); }
footer a:hover { color: var(--text); text-decoration: none; }
footer .links { margin-top: 8px; display: flex; gap: 18px; flex-wrap: wrap; }

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  main { padding: 30px 0 20px; }
}