:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #5b6472;
  --accent: #e53935;
  --border: #e6e8ec;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}
.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}
header.top {
  background: var(--accent);
  color: #fff;
  padding: 28px 20px;
  text-align: center;
}
header.top .brand {
  font-size: 15px;
  letter-spacing: .5px;
  opacity: .92;
  text-transform: uppercase;
}
header.top h1 {
  margin: 6px 0 0;
  font-size: 26px;
  font-weight: 700;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 26px;
  box-shadow: 0 1px 3px rgba(16,24,40,.05);
}
.updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 22px;
}
h2 {
  font-size: 19px;
  margin: 30px 0 10px;
  padding-top: 6px;
}
h2:first-of-type { margin-top: 8px; }
p { margin: 0 0 14px; }
ul { margin: 0 0 16px; padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.intro { font-size: 16px; }
hr { border: none; border-top: 1px solid var(--border); margin: 26px 0; }
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 26px;
}
.footer a { color: var(--muted); }
strong { font-weight: 600; }
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --card: #1c2027;
    --text: #e7e9ee;
    --muted: #99a1af;
    --border: #2a2f38;
  }
}