:root{--fg:#111827;--muted:#6b7280;--line:#e5e7eb;--link:#2563eb;--bg:#ffffff;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--fg)}
.container{max-width:860px;margin:0 auto;padding:28px 18px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:18px}
.brand{font-weight:700}
.nav{display:flex;gap:14px;flex-wrap:wrap;font-size:14px}
.nav a{color:var(--link);text-decoration:none}
.nav a:hover{text-decoration:underline}
h1{font-size:28px;margin:14px 0}
h2{font-size:18px;margin:22px 0 10px}
p,li{color:var(--muted);line-height:1.6}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;background:#f9fafb;border:1px solid var(--line);padding:10px 12px;border-radius:10px;overflow:auto}
.footer{border-top:1px solid var(--line);margin-top:22px;padding-top:12px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.badge{display:inline-block;border:1px solid var(--line);padding:2px 8px;border-radius:999px;font-size:12px;color:var(--muted);background:#fafafa}