:root{--fg:#16181d;--muted:#6b7280;--bg:#fafbfc;--line:#e5e7eb;--accent:#2563eb}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
 font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:40px 24px 96px}
header{display:flex;justify-content:space-between;align-items:center;
 padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:48px}
.logo{font-weight:600;letter-spacing:-.01em}
.dot{color:var(--accent)}
nav a{margin-left:20px;color:var(--muted);text-decoration:none;font-size:14px}
nav a:hover{color:var(--fg)}
h1{font-size:30px;letter-spacing:-.02em;margin:0 0 10px}
code{background:#eef1f4;padding:2px 6px;border-radius:5px;font-size:.9em}
.lead{color:var(--muted);margin:0 0 36px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:32px}
.card,.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}
.panel{margin-bottom:14px}
.panel p{margin:6px 0 0;color:var(--muted)}
.k{font-size:13px;color:var(--muted)}
.v{font-size:22px;font-weight:600;margin-top:4px}
footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--line);
 font-size:13px;color:var(--muted)}