:root{--fg:#1f2933;--muted:#6b7280;--line:#e5e7eb;--accent:#2563eb}
*{box-sizing:border-box}
body{margin:0;color:var(--fg);background:#fff;
  font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.wrap{max-width:720px;margin:0 auto;padding:64px 24px 88px}
.top{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:8px;
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.top a.brand{font-size:19px;font-weight:600;color:var(--fg);text-decoration:none;letter-spacing:.2px}
nav{display:flex;gap:18px;margin-left:auto}
nav a{color:var(--muted);text-decoration:none;font-size:14px}
nav a:hover{color:var(--accent)}
nav a.on{color:var(--fg);font-weight:500}
.crumb{color:var(--muted);font-size:12px;margin:22px 0 4px}
h1{font-size:22px;font-weight:600;margin:0}
h2{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;
  letter-spacing:.08em;margin:34px 0 12px}
ul{list-style:none;padding:0;margin:0}
li{border-bottom:1px solid var(--line)}
li a,li span.row{display:flex;justify-content:space-between;align-items:baseline;padding:13px 2px;color:var(--fg);text-decoration:none}
li a:hover{color:var(--accent)}
.meta{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
footer{margin-top:52px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}