:root {
  --bg: #f7f7f5;
  --fg: #1d1d1b;
  --muted: #5c5c57;
  --accent: #b4410f;
  --card: #ffffff;
  --line: #e2e1dc;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --fg: #ecebe6;
    --muted: #a6a59e;
    --accent: #f08a4b;
    --card: #1f1f1d;
    --line: #33332f;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: 0 16px;
}
header, main, footer { max-width: 720px; margin: 0 auto; }
header { padding: 32px 0 8px; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; justify-content: space-between; }
header a.brand { font-weight: 700; font-size: 1.4rem; color: var(--fg); text-decoration: none; letter-spacing: -0.01em; }
nav { display: flex; gap: 16px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
main { padding: 16px 0 32px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 16px 0 8px; letter-spacing: -0.02em; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.lead { font-size: 1.15rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.9rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin: 16px 0; }
a { color: var(--accent); }
footer { border-top: 1px solid var(--line); padding: 16px 0 32px; color: var(--muted); font-size: 0.9rem; }