body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:#0e1116;color:#e8ebf1;line-height:1.65}
main{max-width:720px;margin:40px auto 70px;padding:0 20px}
h1{font-size:1.6rem;letter-spacing:-.02em}
h2{font-size:1.02rem;margin-top:28px;color:#5b8cff}
p,li{font-size:.92rem;color:#c9d1e0}
a{color:#5b8cff}
.back{display:inline-block;margin-bottom:22px;font-size:.85rem;text-decoration:none;font-weight:600;color:#9aa4b8}
.note{background:#161a22;border-left:4px solid #5b8cff;padding:10px 14px;border-radius:8px;font-size:.85rem}