body{margin:0;background:#f4f6f8;color:#14202b;font:15px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header{background:#0b5cab;color:#fff;padding:14px 16px}header h1{margin:0;font-size:18px}
main{max-width:760px;margin:0 auto;padding:16px 20px 40px}
h2{font-size:17px;margin-top:28px}h3{font-size:15px;margin-bottom:4px}
a{color:#0b5cab}hr{border:0;border-top:1px solid #d9e0e6;margin:36px 0}
@media (prefers-color-scheme:dark){body{background:#10171e;color:#e8eef3}a{color:#5aa6f0}hr{border-color:#2c3a47}}
h1.lt{font-size:20px}