:root {
  --bg: #0f1115;
  --panel: #161922;
  --border: #242836;
  --text: #e8eaef;
  --muted: #9aa3b2;
  --accent: #7aa2ff;
  --accent-hover: #a4bdff;
  --max: 880px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 48px 24px; }
header { text-align: center; margin-bottom: 48px; }
header h1 { margin: 0 0 8px; font-size: 32px; letter-spacing: -0.02em; }
header p { margin: 0; color: var(--muted); }
nav.toc {
  display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: center;
  margin: 24px 0 0; font-size: 14px;
}
nav.toc a {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px;
  color: var(--muted);
}
nav.toc a:hover { color: var(--text); border-color: var(--accent); text-decoration: none; }
section.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 28px 24px;
  margin: 0 0 24px;
}
section.card h2 {
  margin: 0 0 4px; font-size: 22px; letter-spacing: -0.01em;
}
section.card .subtitle { color: var(--muted); margin: 0 0 20px; font-size: 14px; }
h3 { margin: 24px 0 8px; font-size: 16px; }
p, li { color: var(--text); }
ul { padding-left: 20px; }
ul li { margin-bottom: 4px; }
.meta { color: var(--muted); font-size: 13px; margin-top: 8px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.pill {
  display: inline-block; padding: 4px 10px; font-size: 12px;
  border: 1px solid var(--border); border-radius: 999px; color: var(--muted);
}
.back {
  display: inline-block; margin-bottom: 16px; font-size: 14px; color: var(--muted);
}
footer {
  text-align: center; color: var(--muted); font-size: 13px;
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border);
}
code.email {
  background: #1d2230; border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 4px; font-size: 14px;
}
@media (max-width: 540px) {
  .wrap { padding: 32px 16px; }
  header h1 { font-size: 26px; }
  section.card { padding: 22px 18px; }
}