:root { color-scheme: dark; }
body { margin: 0; background: #0b1220; color: #dfe6f3; font: 16px/1.65 system-ui, -apple-system, "Segoe UI", "Noto Sans Thai", sans-serif; }
main { max-width: 820px; margin: 0 auto; padding: 48px 24px 80px; }
a { color: #7cc4ff; }
h1 { font-size: 34px; margin: 0 0 6px; }
h2 { font-size: 21px; margin: 34px 0 8px; }
.muted { color: #8fa3c6; }
header { display: flex; gap: 14px; align-items: center; margin-bottom: 30px; }
header a.logo { width: 34px; height: 34px; display: block; }
hr { border: 0; border-top: 1px solid #22304a; margin: 40px 0; }