:root{--ink:#1a1a1a;--muted:#5c5f62;--line:#e3e3e3;--accent:#2c6e49}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--ink)}
header,main,footer{max-width:760px;margin:0 auto;padding:24px}
header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}
header a{color:var(--ink);text-decoration:none;font-weight:600}nav a{margin-left:16px;font-weight:400;color:var(--muted)}
h1{font-size:32px;line-height:1.2}h2{margin-top:32px;font-size:20px}a{color:var(--accent)}
.card{border:1px solid var(--line);border-radius:10px;padding:20px;margin:16px 0}
.muted{color:var(--muted)}footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
table{border-collapse:collapse;width:100%}td,th{border-bottom:1px solid var(--line);padding:8px;text-align:left}