:root{--bg:#fff;--fg:#17211b;--mut:#4a5750;--acc:#0f5132;--soft:#eef4f0;--line:#d6e0d9}
@media(prefers-color-scheme:dark){:root{--bg:#111815;--fg:#eef3ef;--mut:#aebbb3;--acc:#7fd6a6;--soft:#18231d;--line:#2a3a31}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc)}a:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:var(--bg);padding:.5rem;z-index:2}
header,main,footer{max-width:42rem;margin:0 auto;padding:1rem 1rem}
header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
.brand{font-weight:800;font-size:1.4rem;text-decoration:none;color:var(--fg)}
nav a{margin-left:1rem}
h1{font-size:clamp(2rem,8vw,3rem);line-height:1.15;margin:1.5rem 0 1rem}
h2{font-size:1.4rem;margin-top:2rem}
.lede{font-size:1.2rem;color:var(--mut)}
.btn{display:inline-block;background:var(--acc);color:var(--bg);padding:.8rem 1.2rem;border-radius:.5rem;font-weight:700;text-decoration:none;margin-top:.5rem}
.btn:hover{opacity:.9}
.card{background:var(--soft);border:1px solid var(--line);border-radius:.75rem;padding:1rem 1.25rem;margin:1.5rem 0}
footer{color:var(--mut);font-size:.9rem;border-top:1px solid var(--line);margin-top:2rem}
.card h2{margin-top:0}
.notfound{max-width:36rem}