:root{--bg:#f7f5f0;--ink:#1c1b19;--muted:#6b6862;--rule:#dcd8cf;--accent:#2f5d50}
@media (prefers-color-scheme:dark){:root{--bg:#141413;--ink:#ecebe6;--muted:#9c998f;--rule:#2f2e2b;--accent:#7fb8a6}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif}
.wrap{max-width:680px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--rule)}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{font-weight:700;letter-spacing:.08em;color:var(--ink);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:20px;font-size:15px}
nav a:hover{color:var(--ink)}
main{padding:56px 0 72px}
h1{font-size:34px;line-height:1.2;margin:0 0 16px}
h2{font-size:20px;margin:40px 0 8px}
p,li{color:var(--ink)}
.lede{font-size:19px;color:var(--muted)}
a{color:var(--accent)}
.card{border:1px solid var(--rule);padding:20px 22px;margin-top:24px}
.card h3{margin:0 0 4px;font-size:18px}
.card p{margin:0;color:var(--muted)}
footer{border-top:1px solid var(--rule);color:var(--muted);font-size:14px}
footer .wrap{padding:24px 20px}
@media (max-width:480px){nav a{margin-left:14px}h1{font-size:28px}}