:root { --text:#1f2328; --muted:#6a737d; --line:#e6e8eb; --accent:#1d6b3a; --bg:#fcfcfa; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 17px/1.6 Georgia, "Times New Roman", serif; }
a { color: var(--accent); }
.top { max-width: 720px; margin: 0 auto; padding: 24px 20px 8px; display: flex; justify-content: space-between;
       align-items: baseline; border-bottom: 1px solid var(--line); font-family: system-ui, sans-serif; }
.brand { font-weight: 700; font-size: 20px; text-decoration: none; color: var(--text); }
.top nav a { margin-left: 18px; text-decoration: none; font-size: 15px; }
main { max-width: 720px; margin: 0 auto; padding: 24px 20px 40px; }
h1 { font-size: 30px; line-height: 1.25; margin: 8px 0 12px; }
h2 { font-size: 22px; margin: 0 0 4px; }
h2 a { text-decoration: none; color: var(--text); }
.lead { color: var(--muted); font-size: 18px; }
.card { padding: 18px 0; border-bottom: 1px solid var(--line); }
.meta { color: var(--muted); font-size: 14px; font-family: system-ui, sans-serif; margin: 0 0 8px; }
.foot { max-width: 720px; margin: 0 auto; padding: 16px 20px 32px; color: var(--muted);
        font: 14px system-ui, sans-serif; border-top: 1px solid var(--line); }