:root {
  --bg: #f6f3ee; --card: #ffffff; --text: #222222; --muted: #666666; --accent: #e8590c; --line: #e6e1d8;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141414; --card: #1f1f1f; --text: #ececec; --muted: #a3a3a3; --accent: #ff8a3d; --line: #333333; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.brand { font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
nav a { color: var(--accent); text-decoration: none; margin-left: 12px; font-size: 15px; }
article { background: var(--card); border-radius: 16px; padding: 28px 24px; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 4px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
h2 { font-size: 19px; margin: 32px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { margin: 0 0 10px; }
ul { padding-left: 20px; }
a { color: var(--accent); }
footer { color: var(--muted); font-size: 14px; text-align: center; margin-top: 24px; }