:root{--ink:#1d2733;--muted:#5b6b7a;--accent:#1b7f8c;--bg:#fff;--soft:#eef5f6;--line:#dde5ea}
*{box-sizing:border-box}body{margin:0;font:17px/1.6 Georgia,"Times New Roman",serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.top{background:var(--soft);border-bottom:1px solid var(--line)}.top .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 20px;padding:14px 20px}
.brand{font:700 24px/1 "Helvetica Neue",Arial,sans-serif;color:var(--ink);text-decoration:none;letter-spacing:.3px}.brand span{color:var(--accent)}
nav a{font:15px "Helvetica Neue",Arial,sans-serif;color:var(--muted);text-decoration:none;margin-left:16px}nav a:hover{color:var(--accent)}
main{padding:28px 0 48px}h1{font-size:34px;line-height:1.2;margin:8px 0 14px}h2{font-size:23px;margin:32px 0 8px}h3{font-size:19px;margin:22px 0 6px}
p{margin:0 0 14px}.lead{font-size:19px;color:var(--muted)}.crumbs{font:14px "Helvetica Neue",Arial,sans-serif;color:var(--muted)}.crumbs a{color:var(--muted)}
a{color:var(--accent)}ul,ol{padding-left:22px}li{margin-bottom:6px}
.articles{list-style:none;padding:0;margin-top:24px}.articles li{border-top:1px solid var(--line);padding:10px 0}.articles a{text-decoration:none}
table{border-collapse:collapse;width:100%;margin:12px 0 18px;font-size:16px}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--soft)}
.note{background:var(--soft);border-left:4px solid var(--accent);padding:12px 16px;margin:18px 0;font-size:16px}
footer{border-top:1px solid var(--line);color:var(--muted);font:14px/1.5 "Helvetica Neue",Arial,sans-serif;padding:18px 0}
@media(max-width:600px){body{font-size:16px}h1{font-size:27px}nav a{margin:0 12px 0 0}}