:root {
  --bg: #ffffff;
  --text: #2b2d33;
  --muted: #57636c;
  --line: #e6e7ea;
  --link: #c24f05;
  --accent: #e86108;
  --panel: #f7f7f8;
}
/* Always light, like the app (Edsel 2026-10-21). */
:root { color-scheme: light; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
.brand { font-weight: 800; letter-spacing: 0.18em; font-size: 14px; color: var(--accent); text-decoration: none; }
h1 { font-size: 30px; line-height: 1.2; margin: 20px 0 4px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
h2 { font-size: 20px; line-height: 1.3; margin: 40px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 24px 0 4px; }
p, li { color: var(--text); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--link); }
.summary { background: var(--panel); border-radius: 12px; padding: 4px 20px; margin: 0 0 8px; }
.table { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
.toc a { display: inline-block; margin: 2px 0; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }