:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --surface: #13131c;
  --text: #f4f4f8;
  --muted: #b8b9ca;
  --link: #a4c8ff;
  --border: #323345;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--link); text-underline-offset: .2em; }
a:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
.wrap { max-width: 52rem; margin-inline: auto; padding-inline: 20px; }
.masthead { border-bottom: 1px solid var(--border); }
.topbar, .footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 20px;
  padding-block: 10px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; text-decoration: none; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.topbar nav, .footer-links nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.topbar a, .footer-links a { min-height: 44px; display: inline-flex; align-items: center; }
.article { padding-block: clamp(36px, 7vw, 80px); }
.article h1 { margin: 0 0 18px; font-size: clamp(2rem, 5.4vw, 3.5rem); line-height: 1.1; letter-spacing: -.025em; text-wrap: balance; }
.article h2 { margin: 40px 0 10px; font-size: clamp(1.25rem, 3vw, 1.65rem); line-height: 1.25; }
.lead { color: var(--muted); font-size: 1.125rem; margin: 0 0 26px; }
.article p, .article li, .article dd { overflow-wrap: anywhere; }
.article li + li { margin-top: 10px; }
.choices { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 20px; }
.choices dt { font-weight: 700; }
.choices dd { margin: 3px 0 0; color: var(--muted); }
.choices dd + dt { margin-top: 14px; }
.related { margin-top: 36px; border-top: 1px solid var(--border); }
.related ul { padding-left: 1.25rem; }
.related li a { display: inline-block; padding-block: 9px; }
.footer { border-top: 1px solid var(--border); color: var(--muted); }