* { box-sizing: border-box; }
body { margin: 0; background: #101820; color: #e8eef4; font-family: system-ui, sans-serif; line-height: 1.6; }
header { background: #0b1117; border-bottom: 1px solid #2a3b4a; padding: 14px 0; }
header .wrap { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
nav a { color: #7fb5e6; text-decoration: none; margin-left: 14px; font-size: 14px; }
.wrap { max-width: 900px; margin: 0 auto; padding: 0 22px; }
main { padding: 48px 22px; }
.muted { color: #93a4b3; font-size: 14px; }
footer { border-top: 1px solid #2a3b4a; padding: 16px 22px; font-size: 13px; }