:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --accent: #c25e00;
  --card: #f5f5f7;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #38383a;
    --accent: #ff9f0a;
    --card: #1c1c1e;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 80px; }
header a.brand {
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, system-ui, sans-serif;
  font-weight: 700; font-size: 19px; color: var(--text); text-decoration: none;
}
header a.brand span { color: var(--accent); }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 36px 0 6px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 28px; }
h2 { font-size: 21px; letter-spacing: -0.01em; margin: 36px 0 8px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 22px; }
a { color: var(--accent); }
.summary { background: var(--card); border-radius: 14px; padding: 18px 20px; margin: 0 0 8px; }
.summary ul { margin: 0; }
.summary li:last-child { margin-bottom: 0; }
footer { margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 16px; }