:root{--bg:#f7f6f2;--fg:#1d2321;--muted:#5d6763;--acc:#2f6f5e;--line:#dedbd2}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:24px 20px}
header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}
header b{letter-spacing:.02em}nav a{margin-left:18px;color:var(--muted);text-decoration:none}nav a:hover{color:var(--acc)}
h1{font-size:30px;line-height:1.25;margin:28px 0 8px}h2{font-size:19px;margin-top:28px}
.lead{color:var(--muted);font-size:18px}.card{border:1px solid var(--line);border-radius:8px;padding:16px 18px;margin:12px 0;background:#fff}
footer{color:var(--muted);font-size:14px;border-top:1px solid var(--line);margin-top:40px}