:root {
  color-scheme: light dark;
  --ink: #16181d;
  --muted: #5b6270;
  --bg: #fbfbfc;
  --rule: #e2e5ea;
  --accent: #1f6feb;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e8eaee; --muted: #a3abb8; --bg: #101216; --rule: #262b33; --accent: #7aa7ff; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}
h1 { font-size: 1.9rem; letter-spacing: -0.02em; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.4rem; }
h3 { font-size: 1rem; margin: 1.4rem 0 0.3rem; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 1.05rem; }
.updated { color: var(--muted); font-size: 0.9rem; }
.contact { color: var(--muted); font-size: 0.95rem; }
code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.92em;
  background: color-mix(in srgb, var(--rule) 55%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}
pre {
  background: color-mix(in srgb, var(--rule) 45%, transparent);
  padding: 0.9rem 1rem;
  border-radius: 8px;
  overflow-x: auto;
}
pre code { background: none; padding: 0; }
a { color: var(--accent); }
nav { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
button {
  font: inherit;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }
.code-box {
  word-break: break-all;
  white-space: pre-wrap;
}