:root {
  --purple: #7A5CF0;
  --purple-dark: #9B34D6;
  --text: #2b2b33;
  --muted: #6b6b78;
  --border: #e6e6ee;
  --bg: #ffffff;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
header.site {
  display: flex; align-items: center; gap: 14px;
  padding-bottom: 20px; margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
header.site .mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--purple), var(--purple-dark));
  flex: none;
}
header.site .name { font-weight: 700; font-size: 17px; }
header.site .name span { display: block; font-weight: 400; font-size: 13px; color: var(--muted); }
nav a { color: var(--purple); text-decoration: none; margin-right: 18px; font-size: 14px; }
nav a:hover { text-decoration: underline; }
h1 { font-size: 26px; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 30px 0 8px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--purple); }
code { background: #f3f3f8; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.cta {
  display: inline-block; background: linear-gradient(135deg, var(--purple), var(--purple-dark));
  color: #fff; padding: 10px 18px; border-radius: 8px; text-decoration: none; font-weight: 600;
}
footer {
  margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 13px;
}
@media (prefers-color-scheme: dark) {
  :root { --text: #e8e8ef; --muted: #9a9aa8; --border: #2c2c36; --bg: #16161c; }
  code { background: #24242e; }
}