:root {
  --bg: #ffffff; --fg: #1c1c1e; --muted: #6b6b70;
  --rule: #e3e3e6; --accent: #c2381f; --card: #f7f7f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f11; --fg: #f2f2f4; --muted: #9a9aa0;
    --rule: #2a2a2e; --accent: #ff7a5c; --card: #18181b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 44rem; margin: 0 auto; padding: 3rem 1.25rem 5rem; }
header { display: flex; align-items: center; gap: 1rem; margin-bottom: 2.5rem; }
header img { width: 68px; height: 68px; border-radius: 15px; }
h1 { font-size: 1.6rem; margin: 0; letter-spacing: -0.02em; }
header p { margin: .25rem 0 0; color: var(--muted); font-size: .95rem; }
h2 { font-size: 1.15rem; margin: 2.5rem 0 .75rem; letter-spacing: -0.01em; }
h3 { font-size: 1rem; margin: 1.75rem 0 .4rem; }
a { color: var(--accent); }
.date { color: var(--muted); font-size: .9rem; margin: 0 0 2.5rem; }
.card, .lead {
  background: var(--card); border: 1px solid var(--rule);
  border-radius: 12px; padding: 1rem 1.25rem; margin: 1.5rem 0;
}
.lead { font-size: 1.05rem; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9em; background: var(--card);
  border: 1px solid var(--rule); border-radius: 5px; padding: .1em .35em;
}
ul { padding-left: 1.2rem; }
li { margin: .35rem 0; }
footer {
  margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--rule);
  color: var(--muted); font-size: .9rem;
}
footer a { color: var(--muted); }