:root{--ink:#1c1c1c;--muted:#5a5a5a;--line:#e2e0da;--bg:#faf9f6;--accent:#1f3b2c}
*{box-sizing:border-box}
body{margin:0;font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
header{display:flex;align-items:center;justify-content:space-between;max-width:820px;margin:0 auto;padding:28px 24px;border-bottom:1px solid var(--line)}
.brand{font-weight:650;color:var(--accent);text-decoration:none;letter-spacing:-.02em;font-size:19px}
nav a{margin-left:22px;color:var(--muted);text-decoration:none;font-size:15px}
nav a:hover{color:var(--accent)}
main{max-width:820px;margin:0 auto;padding:56px 24px 64px}
h1{font-size:34px;line-height:1.25;letter-spacing:-.02em;margin:0 0 18px}
h2{font-size:19px;margin:36px 0 10px}
p{color:#333}
.lead{font-size:18px;color:var(--muted)}
ul{padding-left:20px}
li{margin:6px 0}
a{color:var(--accent)}
footer{max-width:820px;margin:0 auto;padding:24px;border-top:1px solid var(--line);color:#8a8a8a;font-size:13px}
@media(max-width:520px){h1{font-size:27px}header{padding:20px}nav a{margin-left:14px}}