:root{color-scheme:light dark;--bg:#fafafa;--paper:#efefef;--ink:#171719;--muted:#636366;--line:#ddd;--blue:#007aff;--hover:#005ac4}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 system-ui,-apple-system,BlinkMacSystemFont,sans-serif;-webkit-font-smoothing:antialiased}
header,main,footer{max-width:680px;margin:auto;padding:0 24px}
header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px;padding-bottom:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:20px;font-weight:650;letter-spacing:-.4px;text-decoration:none}.brand img{border-radius:9px;display:block}
nav{display:flex;gap:22px}nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:var(--muted);font-size:15px;font-weight:500}nav a:hover{color:var(--ink)}nav a[aria-current=page]{color:var(--ink);font-weight:600}
a{color:var(--blue);text-underline-offset:3px}a:hover{color:var(--hover)}a:focus-visible{outline:3px solid var(--blue);outline-offset:4px;border-radius:3px}
main{padding-top:40px}
h1,h2{font-weight:650;line-height:1.15;text-wrap:balance}h1{font-size:clamp(36px,7vw,50px);letter-spacing:-.035em;margin:0 0 18px}h2{font-size:21px;letter-spacing:-.02em;margin:38px 0 8px}
p,ul{margin:0 0 14px}.lead{font-size:20px;line-height:1.45;color:var(--muted);margin-bottom:30px;text-wrap:pretty}.updated{font-size:14px;color:var(--muted);margin-bottom:18px}
.card{background:var(--paper);padding:22px 24px;border-radius:14px;margin:0 0 8px}.card h2{margin-top:0}.card p:last-child{margin-bottom:0}
.note{font-size:15px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:40px}
footer{font-size:14px;color:var(--muted);padding-top:32px;padding-bottom:40px}footer a{color:inherit}
@media(max-width:500px){header,main,footer{padding-left:16px;padding-right:16px}main{padding-top:24px}nav{gap:16px}.lead{font-size:19px}.card{padding:20px}}
@media(prefers-color-scheme:dark){:root{--bg:#19191b;--paper:#262628;--ink:#f5f5f7;--muted:#aaaab0;--line:#3c3c40;--blue:#0a84ff;--hover:#64b0ff}}