:root{color-scheme:light dark;--bg:#fafaf7;--fg:#1c1c1e;--muted:#5c5c61;--accent:#1a6b4a;--card:#fff;--line:#dcdcd6}
@media (prefers-color-scheme:dark){:root{--bg:#121413;--fg:#ececea;--muted:#a3a3a0;--accent:#6fcf9f;--card:#1b1d1c;--line:#34373a}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-underline-offset:.15em}
a:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:var(--card);padding:.5rem;z-index:9}
header,main,footer{max-width:42rem;margin:0 auto;padding:1rem 1.25rem}
header{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1.5rem;align-items:baseline;border-bottom:1px solid var(--line)}
header .brand{font-weight:700;color:var(--fg);text-decoration:none}
nav a{margin-right:1rem}
nav a:last-child{margin-right:0}
h1{font-size:2rem;line-height:1.2;margin:1.5rem 0 .5rem}
h2{font-size:1.3rem;margin:2rem 0 .5rem}
.tag{font-size:1.25rem;color:var(--muted);margin:0 0 1.5rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem 1.25rem;margin:1rem 0}
.card h3{margin:0 0 .25rem;font-size:1.05rem}.card p{margin:0}
ul{padding-left:1.25rem}
footer{color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);margin-top:2rem}
.meta{color:var(--muted)}
details{border-bottom:1px solid var(--line);padding:.75rem 0}
summary{cursor:pointer;font-weight:600}