:root {
  --bg: #0d0d12;
  --surface: #16161d;
  --border: #26262f;
  --text: #f4f4f6;
  --muted: #a1a1ad;
  --faint: #6f6f7d;
  --purple: #6d3cf5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 48px 24px 96px; }
header { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.mark { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.mark span { color: var(--purple); }
.tag { color: var(--faint); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 32px 0 8px; }
h2 { font-size: 19px; margin: 36px 0 8px; }
p, li { color: var(--muted); }
li { margin-bottom: 6px; }
a { color: var(--purple); }
.updated { color: var(--faint); font-size: 14px; margin-top: 0; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 24px 0;
}
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
nav { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 14px; }
nav a { margin-right: 18px; }
footer { color: var(--faint); font-size: 13px; margin-top: 14px; }
.btn {
  display: inline-block; background: var(--purple); color: #fff; text-decoration: none;
  padding: 13px 24px; border-radius: 12px; font-weight: 600; margin-top: 20px;
}