:root {
  --bg: #ffffff;
  --text: #16171b;
  --muted: #5b5f6b;
  --line: #e4e5ea;
  --accent: #7a35ff;
  --code: #f4f4f7;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0f12; --text: #f4f4f6; --muted: #a3a6b1; --line: #2c2e36; --accent: #b897ff; --code: #1a1b20; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: 0.12em; font-size: 24px; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 8px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { margin: 0 0 12px; }
ul, ol { padding-left: 22px; }
a { color: var(--accent); }
code { background: var(--code); border-radius: 4px; padding: 2px 6px; font-size: 14px; word-break: break-all; }
.box { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin: 16px 0; }
.small { font-size: 14px; color: var(--muted); }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }