:root {
  --bg: #ffffff; --fg: #16181d; --muted: #5c6270;
  --line: #e3e6ec; --accent: #1f5fbf; --card: #f7f8fa;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#14161a; --fg:#e8eaee; --muted:#9aa1ae; --line:#2a2e36; --accent:#7aa9f0; --card:#1b1e24; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 45rem; margin: 0 auto; padding: 3.5rem 1.5rem 5rem; }
header { border-bottom: 1px solid var(--line); padding-bottom: 1.25rem; margin-bottom: 2rem; }
.eyebrow { font-size: .75rem; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); margin: 0 0 .4rem; }
h1 { font-size: 1.6rem; line-height: 1.25; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin: 2.25rem 0 .6rem; letter-spacing: -.005em; }
p { margin: 0 0 1rem; }
a { color: var(--accent); }
.lede { font-size: 1.05rem; color: var(--fg); }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1.1rem 1.25rem; margin: 1.25rem 0; }
.card p:last-child, .card ol:last-child, .card ul:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 1rem; padding-left: 1.35rem; }
li { margin-bottom: .4rem; }
dl { margin: 0; }
dt { font-weight: 600; margin-top: .9rem; }
dt:first-child { margin-top: 0; }
dd { margin: .15rem 0 0; color: var(--muted); }
footer { margin-top: 3.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: .875rem; color: var(--muted); }
footer a { margin-right: 1rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: .1em .35em; }