:root{--bg:#fbfbf9;--fg:#1a1a1a;--muted:#5c5c57;--line:#e3e2dc;--accent:#1d4ed8;--card:#ffffff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:var(--card)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;flex-wrap:wrap}
.brand{font-weight:700;text-decoration:none;color:var(--fg);font-size:17px}
nav a{margin-left:16px;font-size:15px}
main{padding:36px 0 48px}
h1{font-size:clamp(26px,4.5vw,34px);line-height:1.2;margin:0 0 8px}
h2{font-size:22px;margin:36px 0 10px}
h3{font-size:17px;margin:22px 0 6px}
.lead{font-size:18px;color:var(--muted);margin:0 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin:28px 0}
.card h2{margin-top:0}
.card p:last-child{margin-bottom:0}
.meta{color:var(--muted);font-size:14px}
ul{padding-left:22px}
li{margin:6px 0}
code{font:14px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f0efe9;padding:1px 5px;border-radius:4px;word-break:break-all}
footer{border-top:1px solid var(--line);padding:22px 0 34px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.lang{display:flex;gap:10px;margin:0 0 20px;font-size:14px}
.lang a{padding:4px 10px;border:1px solid var(--line);border-radius:999px;text-decoration:none}
hr.sep{border:0;border-top:1px solid var(--line);margin:44px 0}
@media (max-width:480px){nav a{margin-left:12px}}