:root { color-scheme: dark; }
html, body { margin: 0; background: #070b1f; color: #f2f4f6; font-family: Heebo, system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.65; }
main { max-width: 680px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 28px 0 8px; color: #ffffff; }
p, li { margin: 0 0 10px; color: #c4cbe0; font-size: 15px; }
ul { padding-inline-start: 20px; }
a { color: #4d9bff; }
.muted { color: #8b95b8; font-size: 13px; }
.box { background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 12px; padding: 14px 16px; margin: 16px 0; }
.ph { background: rgba(255, 210, 63, 0.18); color: #ffd23f; border-radius: 4px; padding: 0 4px; }
nav { display: flex; gap: 16px; margin-bottom: 24px; font-size: 14px; }