:root{--bg:#f6f6f7;--ink:#17181c;--mute:#5b5f6a;--line:#d9dbe1;--red:#c8202f;--card:#ffffff}
@media (prefers-color-scheme:dark){:root{--bg:#101114;--ink:#eceef2;--mute:#9aa0ad;--line:#2a2d35;--red:#ff4d5e;--card:#17191e}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif}
header,main,footer{max-width:720px;margin:0 auto;padding:0 20px}
header{padding-top:28px;padding-bottom:20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px}
.brand{font-weight:700;font-size:1.15rem;letter-spacing:.02em;color:var(--ink);text-decoration:none}
.brand span{color:var(--red)}
nav a{color:var(--mute);text-decoration:none;margin-left:16px;font-size:.95rem}
nav a:hover,nav a:focus{color:var(--red);text-decoration:underline}
main{padding-top:36px;padding-bottom:48px}
h1{font-size:2rem;line-height:1.2;margin:0 0 8px}
h2{font-size:1.15rem;margin:32px 0 6px}
p,li{max-width:62ch}
.lead{color:var(--mute);font-size:1.08rem}
.note{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--red);padding:14px 16px;border-radius:6px;margin:22px 0}
a{color:var(--red)}
footer{padding-top:20px;padding-bottom:36px;border-top:1px solid var(--line);color:var(--mute);font-size:.9rem}
a:focus-visible{outline:3px solid var(--red);outline-offset:2px}