:root { --ink:#1e293b; --muted:#64748b; --accent:#5b21b6; --line:#e2e8f0; --bg:#f8fafc; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin:0; background:var(--bg); color:var(--ink); font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; line-height:1.6; }
.wrap { max-width:44rem; margin:0 auto; padding:2rem 1.25rem 3rem; }
header.site { display:flex; align-items:center; justify-content:space-between; gap:1rem; flex-wrap:wrap; padding-bottom:1rem; border-bottom:1px solid var(--line); margin-bottom:2rem; }
header.site a.brand { font-weight:700; font-size:1.15rem; color:var(--accent); text-decoration:none; }
nav a { color:var(--muted); text-decoration:none; margin-left:1rem; font-size:.95rem; }
nav a:first-child { margin-left:0; }
nav a:hover, a:hover { text-decoration:underline; }
a { color:var(--accent); }
h1 { font-size:1.75rem; line-height:1.25; margin:0 0 .5rem; }
h2 { font-size:1.15rem; margin:2rem 0 .5rem; }
p, li { font-size:1rem; }
ul { padding-left:1.25rem; }
.lead { font-size:1.15rem; color:var(--muted); margin:0 0 2rem; }
.meta { color:var(--muted); font-size:.9rem; margin:0 0 1.5rem; }
.card { background:#fff; border:1px solid var(--line); border-radius:12px; padding:1.25rem 1.5rem; }
footer.site { margin-top:3rem; padding-top:1rem; border-top:1px solid var(--line); color:var(--muted); font-size:.85rem; }
@media (prefers-color-scheme: dark) {
  :root { --ink:#e2e8f0; --muted:#94a3b8; --accent:#c4b5fd; --line:#334155; --bg:#0f172a; }
  .card { background:#111c33; }
}