:root {
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #4a5159;
  --link: #0b4fb3;
  --accent: #0b4fb3;
  --accent-fg: #ffffff;
  --card: #f3f5f8;
  --border: #c9ced6;
  --warn-bg: #fff4d6;
  --warn-fg: #4a3500;
  --warn-border: #b98900;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --fg: #eceff3;
    --muted: #b4bbc5;
    --link: #8ab8ff;
    --accent: #8ab8ff;
    --accent-fg: #0f1216;
    --card: #1a1f26;
    --border: #3a424d;
    --warn-bg: #3a2e08;
    --warn-fg: #ffe9a8;
    --warn-border: #d9a91a;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 100%; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
.wrap { max-width: 42rem; margin: 0 auto; padding: 0 1rem; }
a { color: var(--link); text-underline-offset: 0.15em; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: 0.5rem 1rem; }
.skip:focus { left: 0; z-index: 10; }
header.site { border-bottom: 1px solid var(--border); padding: 1rem 0; }
header.site .wrap { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; align-items: center; justify-content: space-between; }
.brand { font-weight: 700; font-size: 1.25rem; color: var(--fg); text-decoration: none; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
nav a { display: inline-block; padding: 0.5rem 0; }
main { padding: 2rem 0 3rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.4rem; line-height: 1.3; margin: 2rem 0 0.5rem; }
p, ul, ol { margin: 0 0 1rem; }
.lead { font-size: 1.2rem; color: var(--muted); }
.draft {
  background: var(--warn-bg); color: var(--warn-fg);
  border: 2px solid var(--warn-border); border-radius: 0.5rem;
  padding: 0.75rem 1rem; margin: 0 0 1.5rem; font-weight: 700;
}
.button {
  display: inline-block; background: var(--accent); color: var(--accent-fg);
  padding: 0.75rem 1.25rem; border-radius: 0.5rem; font-weight: 700; text-decoration: none;
  min-height: 44px;
}
.card { background: var(--card); border: 1px solid var(--border); border-radius: 0.5rem; padding: 1rem 1.25rem; margin: 0 0 1rem; }
details { border-bottom: 1px solid var(--border); padding: 0.75rem 0; }
summary { cursor: pointer; font-weight: 700; }
details > :not(summary) { margin-top: 0.5rem; }
footer.site { border-top: 1px solid var(--border); padding: 1.5rem 0 2rem; color: var(--muted); font-size: 0.95rem; }
footer.site ul { list-style: none; margin: 0 0 0.75rem; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
footer.site a { display: inline-block; padding: 0.4rem 0; }
@media (max-width: 30rem) {
  h1 { font-size: 1.6rem; }
  .lead { font-size: 1.1rem; }
}