:root { color-scheme: dark; }
body {
  margin: 0; background: #0A0A0F; color: #D8E2F2;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { color: #fff; font-size: 26px; margin: 0 0 4px; }
h2 { color: #fff; font-size: 19px; margin: 32px 0 8px; }
h3 { color: #fff; font-size: 16px; margin: 20px 0 4px; }
a { color: #5B8DEF; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.meta { color: #8AABDC; font-size: 14px; margin-bottom: 24px; }
.box {
  background: #0F1828; border: 1px solid #1E2A3A; border-radius: 12px;
  padding: 4px 18px;
}
.top-nav { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 32px; }
.site-footer {
  border-top: 1px solid #1E2A3A; margin-top: 56px; padding-top: 16px;
  color: #8AABDC; font-size: 14px;
}