:root { --bg: #f2eee6; --panel: #e2dacc; --text: #1c1a17; --muted: #857d71; --accent: #c0412a; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #151311; --panel: #2d2925; --text: #eee8de; --muted: #968e82; --accent: #e0613f; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", system-ui, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 80px; }
h1, h2, h3, .brand { font-family: ui-serif, "New York", Georgia, "Songti SC", serif; }
h1 { font-size: 36px; line-height: 1.2; margin: 0 0 4px; font-weight: 600; }
h2 { font-size: 22px; margin: 40px 0 8px; font-weight: 600; }
h3 { font-size: 18px; margin: 24px 0 4px; font-weight: 600; }
.muted { color: var(--muted); }
a { color: var(--accent); }
nav { display: flex; gap: 16px; margin-bottom: 40px; font-weight: 600; }
nav a { text-decoration: none; }
.brand { color: var(--text); font-size: 19px; }
section + section { border-top: 1px solid var(--panel); margin-top: 48px; padding-top: 8px; }
ol { padding-left: 22px; }