/* One stylesheet for every page. No build step, no external fonts, no CDN —
   a privacy policy that pulled in a third-party font would undercut its own
   first sentence. */
:root {
  --bg: #FFFFFF;
  --fg: #0F172A;
  --muted: #475569;
  --line: #E2E8F0;
  --accent: #10B981;
  --card: #F8FAFC;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B0F19;
    --fg: #E2E8F0;
    --muted: #94A3B8;
    --line: #1E293B;
    --accent: #34D399;
    --card: #111827;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 40px 22px 80px; }
header { border-bottom: 1px solid var(--line); padding-bottom: 18px; margin-bottom: 28px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.mark {
  width: 30px; height: 30px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, #10B981, #3B82F6);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 15px;
}
.brand strong { font-size: 16px; letter-spacing: -0.2px; }
h1 { font-size: 28px; line-height: 1.25; letter-spacing: -0.5px; margin: 26px 0 6px; }
h2 { font-size: 18px; margin: 32px 0 8px; letter-spacing: -0.2px; }
.eff { color: var(--muted); font-size: 13px; margin: 0 0 8px; }
p, li { color: var(--fg); }
ul { padding-left: 20px; }
li { margin: 6px 0; }
a { color: var(--accent); }
.lede { font-size: 17px; color: var(--muted); }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 16px 18px; margin: 20px 0;
}
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
nav.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
nav.links a {
  border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 14px; text-decoration: none; font-size: 14px; font-weight: 600;
}
footer {
  margin-top: 48px; padding-top: 18px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 13px;
}
code { background: var(--card); padding: 1px 5px; border-radius: 4px; font-size: 90%; }