:root {
  --ink: #1c1c1e;
  --paper: #fafafa;
  --accent: #2f6feb;
  --muted: #6b6b70;
  --line: #e5e5e8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 1.25rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header { border-bottom: 1px solid var(--line); }
.site-header nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.brand { font-weight: 700; color: var(--ink); font-size: 1.15rem; }
.nav-links { display: flex; gap: 1rem; }
main { padding: 2.5rem 0 3rem; }
.hero h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 .75rem; }
.muted { color: var(--muted); }
.posts h2 { margin-top: 2.5rem; }
article { border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1.5rem; }
article h3 { margin: 0 0 .25rem; font-size: 1.1rem; }
article p { margin: 0; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); padding: 1.25rem 0; color: var(--muted); font-size: .9rem; }