:root {
  color-scheme: light dark;
  --bg: #f6f5f2;
  --fg: #111;
  --muted: #555;
  --rule: #e3e1dc;
  --link: #1a5fb4;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0e0d; --fg: #eee; --muted: #9a9a96; --rule: #232321; --link: #8ab4f8; }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1.25rem;
}
main { max-width: 40rem; width: 100%; }
a { color: var(--link); }
.mark { width: 72px; height: 72px; margin-bottom: 1.75rem; color: var(--fg); }
.mark-sm { width: 40px; height: 40px; margin-bottom: 1.5rem; color: var(--fg); }
h1 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 0.75rem; }
h2 { font-size: 1.15rem; font-weight: 600; margin: 2rem 0 0.6rem; }
h3 { font-size: 1rem; font-weight: 600; margin: 1.4rem 0 0.3rem; }
p { margin: 0 0 1rem; }
p.lead { color: var(--muted); margin: 0 0 2rem; max-width: 32rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin: 0 0 0.4rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 0 0 1.5rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.25rem; margin: 0 0 2rem; font-size: 0.9rem; }
dt { color: var(--muted); font-weight: 400; }
dd { margin: 0; color: var(--fg); }
.cta { display: inline-block; margin: 0.25rem 0 0; font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.updated { color: var(--muted); font-size: 0.85rem; margin: 0 0 1.5rem; }
button.reveal {
  background: none; border: 1px solid var(--rule); color: var(--fg);
  font: inherit; font-size: 0.85rem; padding: 0.15rem 0.55rem; border-radius: 4px; cursor: pointer;
}
button.reveal:hover { border-color: var(--fg); }
button.reveal[disabled] { cursor: default; opacity: 0.7; }
a.email { color: var(--fg); text-decoration: underline; text-underline-offset: 2px; }
footer {
  color: var(--muted); font-size: 0.8rem; margin-top: 3rem;
  border-top: 1px solid var(--rule); padding-top: 1.25rem;
}
footer nav { margin-bottom: 0.5rem; }
footer nav a { color: var(--muted); text-decoration: none; margin-right: 1rem; }
footer nav a:hover { color: var(--fg); text-decoration: underline; }